US20020098215A1 - Nanoemulsions comprising at least one amphiphilic lipid, at least one oil, and at least one nonionic polymer, and uses thereof - Google Patents
Nanoemulsions comprising at least one amphiphilic lipid, at least one oil, and at least one nonionic polymer, and uses thereof Download PDFInfo
- Publication number
- US20020098215A1 US20020098215A1 US09/766,403 US76640301A US2002098215A1 US 20020098215 A1 US20020098215 A1 US 20020098215A1 US 76640301 A US76640301 A US 76640301A US 2002098215 A1 US2002098215 A1 US 2002098215A1
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- US
- United States
- Prior art keywords
- chosen
- nanoemulsion
- nanoemulsion according
- groups
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 239000007908 nanoemulsion Substances 0.000 title claims abstract description 180
- 150000002632 lipids Chemical class 0.000 title claims abstract description 92
- 229920000642 polymer Polymers 0.000 title claims abstract description 49
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 16
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 78
- -1 C1-C6 alkyl methacrylate Chemical compound 0.000 claims description 70
- 239000003921 oil Substances 0.000 claims description 69
- 239000000203 mixture Substances 0.000 claims description 66
- 125000000217 alkyl group Chemical group 0.000 claims description 57
- 125000004432 carbon atom Chemical group C* 0.000 claims description 56
- 150000002148 esters Chemical class 0.000 claims description 50
- 239000004094 surface-active agent Substances 0.000 claims description 36
- 229930195733 hydrocarbon Natural products 0.000 claims description 34
- 239000004215 Carbon black (E152) Substances 0.000 claims description 33
- 239000000194 fatty acid Substances 0.000 claims description 32
- 150000002430 hydrocarbons Chemical group 0.000 claims description 32
- 229920006395 saturated elastomer Polymers 0.000 claims description 32
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 31
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 30
- 229930195729 fatty acid Natural products 0.000 claims description 30
- 229920001296 polysiloxane Polymers 0.000 claims description 28
- 125000003342 alkenyl group Chemical group 0.000 claims description 24
- 150000004665 fatty acids Chemical class 0.000 claims description 24
- 229920001577 copolymer Polymers 0.000 claims description 21
- 210000004209 hair Anatomy 0.000 claims description 20
- 102000011782 Keratins Human genes 0.000 claims description 19
- 108010076876 Keratins Proteins 0.000 claims description 19
- 229920002635 polyurethane Polymers 0.000 claims description 19
- 239000004814 polyurethane Substances 0.000 claims description 19
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- 229920013822 aminosilicone Polymers 0.000 claims description 17
- 150000001450 anions Chemical class 0.000 claims description 17
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 15
- 239000013543 active substance Substances 0.000 claims description 14
- 125000000129 anionic group Chemical group 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 125000002091 cationic group Chemical group 0.000 claims description 13
- 239000002537 cosmetic Substances 0.000 claims description 13
- 150000002194 fatty esters Chemical class 0.000 claims description 13
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 13
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 12
- 125000001931 aliphatic group Chemical group 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 12
- 239000008103 glucose Substances 0.000 claims description 12
- 125000002252 acyl group Chemical group 0.000 claims description 11
- 210000004709 eyebrow Anatomy 0.000 claims description 11
- 210000000720 eyelash Anatomy 0.000 claims description 11
- 210000004400 mucous membrane Anatomy 0.000 claims description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims description 11
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 claims description 10
- XDOFQFKRPWOURC-UHFFFAOYSA-N 16-methylheptadecanoic acid Chemical compound CC(C)CCCCCCCCCCCCCCC(O)=O XDOFQFKRPWOURC-UHFFFAOYSA-N 0.000 claims description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims description 10
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 10
- 229910019142 PO4 Inorganic materials 0.000 claims description 9
- 229920001400 block copolymer Polymers 0.000 claims description 9
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 9
- 150000004820 halides Chemical class 0.000 claims description 9
- 235000021317 phosphate Nutrition 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 235000000346 sugar Nutrition 0.000 claims description 9
- 150000002191 fatty alcohols Chemical class 0.000 claims description 8
- 210000004761 scalp Anatomy 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 150000008163 sugars Chemical class 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 7
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 7
- 150000003863 ammonium salts Chemical group 0.000 claims description 7
- 230000001815 facial effect Effects 0.000 claims description 7
- JZMJDSHXVKJFKW-UHFFFAOYSA-M methyl sulfate(1-) Chemical compound COS([O-])(=O)=O JZMJDSHXVKJFKW-UHFFFAOYSA-M 0.000 claims description 7
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 7
- 230000000699 topical effect Effects 0.000 claims description 7
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 6
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000001242 acetic acid derivatives Chemical class 0.000 claims description 6
- 150000007513 acids Chemical class 0.000 claims description 6
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 6
- 229940061720 alpha hydroxy acid Drugs 0.000 claims description 6
- 150000001280 alpha hydroxy acids Chemical class 0.000 claims description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- 159000000011 group IA salts Chemical class 0.000 claims description 6
- 239000003760 tallow Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- IOUUIFSIQMVYKP-UHFFFAOYSA-N Tetradecyl acetate Chemical compound CCCCCCCCCCCCCCOC(C)=O IOUUIFSIQMVYKP-UHFFFAOYSA-N 0.000 claims description 5
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 5
- 125000002947 alkylene group Chemical group 0.000 claims description 5
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- 125000006528 (C2-C6) alkyl group Chemical group 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 claims description 4
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 claims description 4
- 150000008052 alkyl sulfonates Chemical class 0.000 claims description 4
- YSJGOMATDFSEED-UHFFFAOYSA-M behentrimonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCCCCCC[N+](C)(C)C YSJGOMATDFSEED-UHFFFAOYSA-M 0.000 claims description 4
- 150000002195 fatty ethers Chemical class 0.000 claims description 4
- 150000003903 lactic acid esters Chemical class 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000010773 plant oil Substances 0.000 claims description 4
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 3
- FGUZFFWTBWJBIL-XWVZOOPGSA-N [(1r)-1-[(2s,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCC(=O)O[C@H](CO)[C@H]1OC[C@H](O)[C@H]1O FGUZFFWTBWJBIL-XWVZOOPGSA-N 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 239000010775 animal oil Substances 0.000 claims description 3
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 3
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 3
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 3
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 3
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical class C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims description 3
- 125000005647 linker group Chemical group 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 235000005985 organic acids Nutrition 0.000 claims description 3
- 150000003904 phospholipids Chemical class 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- 229940057429 sorbitan isostearate Drugs 0.000 claims description 3
- 229950004959 sorbitan oleate Drugs 0.000 claims description 3
- 230000001225 therapeutic effect Effects 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 3
- PORPENFLTBBHSG-MGBGTMOVSA-N 1,2-dihexadecanoyl-sn-glycerol-3-phosphate Chemical class CCCCCCCCCCCCCCCC(=O)OC[C@H](COP(O)(O)=O)OC(=O)CCCCCCCCCCCCCCC PORPENFLTBBHSG-MGBGTMOVSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 125000006577 C1-C6 hydroxyalkyl group Chemical group 0.000 claims description 2
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 2
- ATFFFUXLAJBBDE-FQEVSTJZSA-N N-Stearoyl glutamic acid Chemical compound CCCCCCCCCCCCCCCCCC(=O)N[C@H](C(O)=O)CCC(O)=O ATFFFUXLAJBBDE-FQEVSTJZSA-N 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- AVTXVDFKYBVTKR-DPAQBDIFSA-N [(3s,8s,9s,10r,13r,14s,17r)-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthren-3-yl] dihydrogen phosphate Chemical class C1C=C2C[C@@H](OP(O)(O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 AVTXVDFKYBVTKR-DPAQBDIFSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 150000001449 anionic compounds Chemical class 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- FLNKWZNWHZDGRT-UHFFFAOYSA-N azane;dihydrochloride Chemical compound [NH4+].[NH4+].[Cl-].[Cl-] FLNKWZNWHZDGRT-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 235000010980 cellulose Nutrition 0.000 claims description 2
- BHYOQNUELFTYRT-DPAQBDIFSA-N cholesterol sulfate Chemical class C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 BHYOQNUELFTYRT-DPAQBDIFSA-N 0.000 claims description 2
- 229940080277 cholesteryl sulfate Drugs 0.000 claims description 2
- RNPXCFINMKSQPQ-UHFFFAOYSA-N dicetyl hydrogen phosphate Chemical class CCCCCCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCCCCCC RNPXCFINMKSQPQ-UHFFFAOYSA-N 0.000 claims description 2
- 229940093541 dicetylphosphate Drugs 0.000 claims description 2
- 125000004990 dihydroxyalkyl group Chemical group 0.000 claims description 2
- REZZEXDLIUJMMS-UHFFFAOYSA-M dimethyldioctadecylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCCCC REZZEXDLIUJMMS-UHFFFAOYSA-M 0.000 claims description 2
- 239000004664 distearyldimethylammonium chloride (DHTDMAC) Substances 0.000 claims description 2
- CYFHLEMYBPQRGN-UHFFFAOYSA-N ditetradecyl hydrogen phosphate Chemical compound CCCCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCCCC CYFHLEMYBPQRGN-UHFFFAOYSA-N 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- 229910001412 inorganic anion Inorganic materials 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 150000005451 methyl sulfates Chemical class 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 150000002891 organic anions Chemical class 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000223 polyglycerol Polymers 0.000 claims description 2
- 229920001282 polysaccharide Polymers 0.000 claims description 2
- 239000005017 polysaccharide Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- SFVFIFLLYFPGHH-UHFFFAOYSA-M stearalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SFVFIFLLYFPGHH-UHFFFAOYSA-M 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-M toluene-4-sulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-M 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 150000003841 chloride salts Chemical class 0.000 claims 3
- 125000004429 atom Chemical group 0.000 claims 1
- UCYFZDNMZYZSPN-UHFFFAOYSA-N docosyl(trimethyl)azanium Chemical class CCCCCCCCCCCCCCCCCCCCCC[N+](C)(C)C UCYFZDNMZYZSPN-UHFFFAOYSA-N 0.000 claims 1
- 125000005843 halogen group Chemical group 0.000 claims 1
- 235000019198 oils Nutrition 0.000 description 42
- 239000000047 product Substances 0.000 description 35
- 239000012071 phase Substances 0.000 description 25
- 150000001875 compounds Chemical class 0.000 description 19
- 0 *.B.C.C.C.C.[1*][Si](C)(C)O[SiH]1(C)([Si]([2*])(C)O[Si]([3*])(C)C)CO1 Chemical compound *.B.C.C.C.C.[1*][Si](C)(C)O[SiH]1(C)([Si]([2*])(C)O[Si]([3*])(C)C)CO1 0.000 description 17
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- 125000006353 oxyethylene group Chemical group 0.000 description 11
- 239000000839 emulsion Substances 0.000 description 8
- 150000002170 ethers Chemical class 0.000 description 7
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 7
- RMTFNDVZYPHUEF-XZBKPIIZSA-N 3-O-methyl-D-glucose Chemical compound O=C[C@H](O)[C@@H](OC)[C@H](O)[C@H](O)CO RMTFNDVZYPHUEF-XZBKPIIZSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- FPIPGXGPPPQFEQ-OVSJKPMPSA-N all-trans-retinol Chemical compound OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-OVSJKPMPSA-N 0.000 description 6
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical class [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 6
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 5
- 150000001298 alcohols Chemical class 0.000 description 5
- 239000008346 aqueous phase Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 235000015165 citric acid Nutrition 0.000 description 5
- 239000003205 fragrance Substances 0.000 description 5
- 239000004530 micro-emulsion Substances 0.000 description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 5
- 125000000963 oxybis(methylene) group Chemical group [H]C([H])(*)OC([H])([H])* 0.000 description 5
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 description 4
- FPIPGXGPPPQFEQ-UHFFFAOYSA-N 13-cis retinol Natural products OCC=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
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- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000001312 palmitoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- RVZRBWKZFJCCIB-UHFFFAOYSA-N perfluorotributylamine Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)N(C(F)(F)C(F)(F)C(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F RVZRBWKZFJCCIB-UHFFFAOYSA-N 0.000 description 1
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- 150000003335 secondary amines Chemical class 0.000 description 1
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- 150000004756 silanes Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
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- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
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- OULAJFUGPPVRBK-UHFFFAOYSA-N tetratriacontyl alcohol Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCO OULAJFUGPPVRBK-UHFFFAOYSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
- 229940042585 tocopherol acetate Drugs 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229960001727 tretinoin Drugs 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
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- 229940077400 trideceth-12 Drugs 0.000 description 1
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- MECHNRXZTMCUDQ-RKHKHRCZSA-N vitamin D2 Chemical compound C1(/[C@@H]2CC[C@@H]([C@]2(CCC1)C)[C@H](C)/C=C/[C@H](C)C(C)C)=C\C=C1\C[C@@H](O)CCC1=C MECHNRXZTMCUDQ-RKHKHRCZSA-N 0.000 description 1
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- 235000019165 vitamin E Nutrition 0.000 description 1
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Classifications
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- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/89—Polysiloxanes
- A61K8/896—Polysiloxanes containing atoms other than silicon, carbon, oxygen and hydrogen, e.g. dimethicone copolyol phosphate
- A61K8/898—Polysiloxanes containing atoms other than silicon, carbon, oxygen and hydrogen, e.g. dimethicone copolyol phosphate containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
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- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
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- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
- A61K8/8182—Copolymers of vinyl-pyrrolidones. Compositions of derivatives of such polymers
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- A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
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- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/21—Emulsions characterized by droplet sizes below 1 micron
Definitions
- the present invention relates to O/W (oil-in-water) nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
- O/W oil-in-water
- nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
- the present invention also relates to the use of such nanoemulsions in topical application, for example, in cosmetics and/or in dermopharmacy.
- nanoemulsion means a metastable oil-in-water emulsion (wherein, for example, the emulsion can comprise an oily phase dispersed in an aqueous phase) whose oil globule size is less than 150 nm, these oil globules being stabilized with a crown of amphiphilic lipids which can optionally form a liquid crystal phase of lamellar type located at the oil/aqueous phase interface.
- the transparency of these emulsions derives from the small size of the oil globules, wherein said small size can be obtained for example by using a high-pressure homogenizer.
- Nanoemulsions are to be distinguished from microemulsions by their structure.
- Microemulsions are thermodynamically stable dispersions comprising micelles of at least one amphiphilic lipid swollen with oil. Furthermore, microemulsions do not require considerable mechanical energy to be prepared. They form spontaneously simply by placing the constituents in contact. At least one possible drawback of microemulsions can be associated with the presence of a high proportion of surfactants, which may tend to lead to intolerance and entailing a sticky feel when applied to the skin. Moreover, their field of formulation is generally narrow and their temperature stability can be limited.
- amphiphilic lipid is present in an amphiphilic lipid phase, which comprises at least one amphiphilic lipid chosen from for example nonionic and ionic amphiphilic lipids.
- amphiphilic lipid means any molecule of bipolar structure comprising at least one hydrophobic portion and at least one hydrophilic portion having the property of reducing the surface tension of water (g ⁇ 55 mN/m) and of reducing the interface tension between water and an oily phase.
- amphiphilic lipid are, for example: surfactant, surface agent, and emulsifier.
- the prior art discloses nanoemulsions comprising an amphiphilic lipid phase comprising phospholipids, a cationic lipid, water and a hydrophobic sunscreen. They are obtained by a high-pressure homogenization process. These nanoemulsions can have at least one drawback, for example, such nanoemulsions may tend to be unstable on storage at the conventional storage temperatures, i.e., between 0° C. and 45° C. Such nanoemulsions may lead to yellow compositions and may produce unpleasant odors, which may develop after a few days of storage. Furthermore, such nanoemulsions tend to exhibit less favorable cosmetic properties. They are described in the “DCI” review of April 1996, pages 46-48, the disclosure of which is incorporated by reference herein.
- nanoemulsions When such polymers are used in compositions in the form of nanoemulsions, some of such nanoemulsions may tend to exhibit a decrease in at least one characteristic, such as stability and transparency.
- oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil and at least one amphiphilc lipid can be thickened with at least one nonionic polymer, for example at least one non-ionic polymer chosen from water-soluble and water-dispersible non-ionic polymers comprising at least one hydrophobic block and at least one hydrophilic block.
- One subject of the present invention is oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block, wherein the weight ratio of the amount of said at least one oil to the amount of said at least one amphiphilic lipid ranges for example from 1:1 to 10:1, such as for example from 1.2:1 to 6:1.
- Another subject of the invention is a process for thickening oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil and at least one amphiphilc lipid comprising including at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block in said nanoemulsions.
- the increase in the viscosity of the medium may result from the formation of a network of oil particles, said network involving combinations of hydrophobic type between, on the one hand, the hydrophobic groups of the polymer and, on the other hand, the hydrophobic cores of the oil particles.
- the existence of labile bonds between the particles may be responsible in part for increasing the viscosity of the mixture.
- the nanoemulsions in accordance with the invention are prepared at temperatures ranging for example from 4° C. to 45° C. and are compatible with heat-sensitive active agents.
- the nanoemulsions can comprise large amounts of oil.
- Such nanoemulsions can for example comprise large amounts of fragrance and can improve their remanence. They can also promote the penetration of the active agents into the superficial layers of the skin and the deposition of active agent onto keratin fibres such as the hair. Hair treated with these nanoemulsions may be at least one of the following: shiny, while simultaneously avoiding a greasy look or feel, softer and more lively in nature, while also tending to disentangle easily.
- the cosmetic composition such as for example a hair composition, obtained by comprising the nanoemulsions of the present invention may spread easily, may be easier to handle and may be removed satisfactorily by rinsing.
- the at least one nonionic polymer which is for example chosen from water-soluble and water-dispersible nonionic polymers, comprises at least one hydrophobic block and at least one hydrophilic block.
- the at least one nonionic polymer can for example comprise at least two hydrophobic blocks.
- the at least one hydrophobic block can be chosen from fatty chains comprising from 6 to 30 carbon atoms, such as for example hydrocarbon-based chains chosen from alkyl, aryl(C 1 -C 8 )alkyl, (C 1 -C 8 )alkylaryl and alkenyl chains, divalent aliphatic groups such as for example C 4 -C 30 alkylene, divalent cycloaliphatic groups such as, for example, methylene dicyclohexyl and isophorone, and divalent aromatic groups such as phenylene.
- the aryl groups can be chosen from phenyl, naphthyl and anthryl groups.
- the at least one hydrophilic block may be chosen from, for example, polyethylene oxides, polysaccharides, polyamides, such as polyacrylamide, and polyesters. In one embodiment of the invention, the at least one hydrophilic block may be chosen from polyethylene oxides comprising from 15 to 500 ethylene oxides.
- the at least one hydrophobic block and the at least one hydrophilic block for example can be bonded by way of at least one linking group chosen from, for example, ester, ether, urea, amide and urethane linkers.
- the weight ratio of the at least one hydrophilic block to the at least one hydrophobic block of the polymer generally ranges for example from 10:1 to 1000:1.
- the at least one nonionic polymer according to the invention can be chosen from:
- celluloses modified with at least one group comprising at least one hydrophobic chain such as, for example:
- hydroxyethylcelluloses modified by at least one group comprising at least one fatty chain such as alkyl, arylalkyl, alkylaryl, and alkenyl groups and further such as alkyl, arylalkyl, alkylaryl, and alkenyl groups wherein said alkyl groups and said alkenyl groups comprise from 8 to 22 carbon atoms, such as the product NATROSOL PLUS GRADE 330 CS (C 16 alkyls) sold by the company AQUALON, and the product BERMOCOLL EHM 100 sold by the company BEROL NOBEL, and
- hydroxyethylcelluloses modified by at least one polyalkylene glycol (C 6 -C 20 )alkylphenyl ether group such as the product AMERCELL POLYMER HM-1500 (polyethylene glycol (15) ether of nonylphenol) sold by the company AMERCHOL;
- hydroxypropylguars modified by at least one group comprising at least one C 10 -C 30 fatty chain such as the product ESAFLOR HM 22 (C 22 alkyl chain) sold by the company LAMBERTI, the products Miracare XC95-3 (C 14 alkyl chain) and RE 205-1 (C 20 alkyl chain) sold by the company Rhodia Chimie; and
- polyether-polyurethanes comprising in their chain at least one hydrophilic block which is most often of a polyoxyethylenated nature and at least one hydrophobic block which may be a chain chosen from aliphatic chains, cycloaliphatic chains, and aromatic chains.
- the polyether-polyurethanes can, for example, comprise at least two lipophilic (i.e., hydrophobic) hydrocarbon chains comprising from 6 to 30 carbon atoms, separated by a hydrophilic block, it being possible for the hydrocarbon chains to be chosen from pendant chains and chains at the end of a hydrophilic block.
- One embodiment may comprise at least one pendant chain.
- the polymer may comprise a hydrocarbon chain at at least one end of a hydrophilic block.
- Representative polyether-polyurethanes useful in the present invention may be multiblocks, such as in triblock form.
- the hydrophobic blocks may be at each end of the chain (for example: triblock copolymer with hydrophilic central block) and optionally both at the ends and in the chain (multiblock copolymer for example).
- These same polymers may also be in the form of graft units or may be star-shaped.
- the nonionic polyether-polyurethanes may be triblock copolymers whose hydrophilic block is a polyoxyethylenated chain comprising from 50 to 1000 oxyethylenated groups. Certain nonionic polyether-polyurethanes comprise a urethane bond between the hydrophilic blocks.
- polyether-polyurethanes whose hydrophilic blocks are linked by other chemical bonds to the lipophilic blocks are also included among the nonionic polyether-polyurethanes.
- Nonionic polyether-polyurethanes can include, for example, polyether-polyurethanes comprising at least one polyoxyethylenated chain and at least one fatty chain, chosen from, for example, C 8 -C 30 alkyl and alkenyl groups.
- such polyether-polyurethanes can include the products Dapral T 210 and Dapral T 212 sold by the company Akzo, and the products Aculyn 44 and Aculyn 46 from the company ROHM and HMS
- ACULYN 46 is a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, stearyl alcohol and methylenebis(4-cyclohexylisocyanate) (SMDI), at 15% by weight in a maltodextrin (4%) and water (81%) matrix
- ACULYN 44 is a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, decyl alcohol and methylenebis(4-cyclohexylisocyanate) (SMDI), at 35% by weight in a propylene glycol (39%) and water (26%) mixture].
- nonionic polyether-polyurethanes that can be used in the invention, mention may also be made of the polymer SER-AD FX1100 sold by the company Servo Delden, which comprises an oxyethylene unit and two C 18 hydrocarbon-based groups at the end of the chain linked to the ethylene oxide via a polyurethane block.
- Representative nonionic polyether-polyurethanes include Rhéolate 205 comprising a urea function sold by the company RHEOX and Rhéolate 208, 204 and 212, as well as Acrysol RM 184 from the company Rohm & Haas.
- the product DW 1206B from RHOM & HMS comprising a C 20 alkyl chain and with a urethane bond, sold at 20% dry matter content in water, may also be used.
- polyether-polyurethanes that can be used according to the invention include polyether-polyurethanes described in the article by G. Fonnum, J. Bakke and Fk. Hansen—Colloid Polym. Sci 271, 380-389 (1993), the disclosure of which is incorporated by reference herein.
- the at least one nonionic polymer according to the invention can be chosen from:
- copolymers formed from at least one hydrophilic methacrylate and at least one hydrophobic monomer comprising at least one fatty chain and copolymers formed from at least one hydrophilic acrylate and at least one hydrophobic monomer comprising at least one fatty chain, such as, for example, the polyethylene glycol methacrylate/lauryl methacrylate copolymer;
- the at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block is generally present in an amount ranging for example from 0.01% to 10% by weight relative to the total weight of the composition, such as from 0.1% to 5% by weight relative to the total weight of the composition.
- the nanoemulsions according to the present invention can comprise at least one amphiphilic lipid chosen from for example nonionic amphiphilic lipids and anionic amphiphilic lipids.
- nonionic amphiphilic lipids of the invention can be chosen from, for example:
- 2/-nonionic amphiphilic lipids that are fluid at a temperature of less than or equal to 45° C. chosen from esters formed from (i) at least one polyol chosen from polyethylene glycol comprising from 1 to 60 ethylene oxide units, sorbitan, glycerol comprising from 2 to 30 ethylene oxide units, and polyglycerols comprising from 2 to 15 glycerol units, and (ii) at least one fatty acid comprising at least one alkyl chain chosen from saturated and unsaturated, linear and branched C 8 -C 22 alkyl chains,
- 5/-surfactants that are solid at a temperature of less than or equal to 45° C. chosen from fatty esters of glycerol, fatty esters of sorbitan, oxyethylenated fatty esters of sorbitan, ethoxylated fatty ethers, and ethoxylated fatty esters, and
- the silicone surfactants that can be used according to the invention are silicone compounds comprising at least one oxyalkylene chain chosen from oxyethylene —OCH 2 CH 2 — and oxypropylene —OCH 2 CH 2 CH 2 —.
- Representative silicone surfactants that can be used according to the present invention include silicone surfactants disclosed in U.S. Pat. Nos. 5,364,633 and 5,411,744, the disclosures of which are incorporated by reference herein.
- silicone surfactants used according to the present invention can be chosen for example from compounds of formula (I):
- R 1 , R 2 and R 3 which may be identical or different, are each chosen from C 1 -C 6 alkyl groups and groups of the formula —(CH 2 ) x —(OCH 2 CH 2 ) y —(OC 2 CH 2 CH 2 ) z —OR 4 , provided that at least one of said groups R 1 , R 2 and R 3 is not a C 1 -C 6 alkyl group;
- R 4 is chosen from hydrogen, alkyl groups, and acyl groups
- A is chosen from integers ranging from 0 to 200;
- B is chosen from integers ranging from 0 to 50; with the proviso that A and B are not simultaneously equal to zero;
- x is chosen from integers ranging from 1 to 6;
- y is chosen from integers ranging from 1 to 30;
- z is chosen from integers ranging from 0 to 5.
- said alkyl groups are methyl groups, x is chosen from integers ranging from 2 to 6 and y is chosen from integers ranging from 4 to 30.
- silicone surfactants of formula (I) can include the compounds of formula (II):
- A is chosen from integers ranging from 20 to 105
- B is chosen from integers ranging from 2 to 10
- y is chosen from integers ranging from 10 to 20.
- silicone surfactants of formula (I) can include the compounds of formula (III):
- A′ and y which may be identical or different, are each chosen from integers ranging from 10 to 20.
- Silicone surfactants of the invention which may be used for example are the silicone surfactants sold by the company Dow Corning under the names DC 5329, DC 7439-146, DC 2-5695, and Q4-3667.
- the products DC 5329, DC 7439-146, and DC 2-5695 are silicone surfactants of formula (II) in which, respectively, A is 22, B is 2, and y is 12; A is 103, B is 10, and y is 12; A is 27, B is 3, and y is 12.
- the product Q4-3667 is a compound of formula (III) in which A is 15 and y is 13.
- amphiphilic lipids that are fluid at a temperature of less than or equal to 45° C. are chosen from, for example:
- diglyceryl isostearate sold by the company Solvay
- glyceryl laurate comprising 2 glycerol units, sold by the company Solvay;
- sorbitan isostearate sold under the name NIKKOL SI 10R by the company Nikko;
- the mixed esters derived from (i) at least one fatty acid, at least one carboxylic acid, and glycerol, and the mixed esters derived from (ii) at least one fatty alcohol, at least one carboxylic acid, and glycerol, wherein said at least one carboxylic acid is chosen from ⁇ -hydroxy acids and succinic acid, which can be used as surfactants in the nanoemulsion according to the invention, may be chosen from, for example, (a) mixed esters derived from at least one fatty acid comprising at least one alkyl chain comprising from 8 to 22 carbon atoms, at least one ⁇ -hydroxy acid, and glycerol, (b) mixed esters derived from at least one fatty acid comprising at least one alkyl chain comprising from 8 to 22 carbon atoms, succinic acid, and glycerol, (c) mixed esters derived from at least one fatty alcohol comprising at least one alkyl chain comprising from 8 to 22 carbon atoms
- the alkyl chain of the fatty acids and fatty alcohols from which are derived the mixed esters which can be used in the nanoemulsion of the invention may be chosen from linear and branched, saturated and unsaturated alkyl chains.
- the alkyl chain may be at least one chain chosen from stearate, isostearate, linoleate, oleate, behenate, arachidonate, palmitate, myristate, laurate, caprate, isostearyl, stearyl, linoleyl, oleyl, behenyl, myristyl, lauryl and capryl chains.
- mixed esters which can be used in the nanoemulsion of the invention, mention may be made of the mixed ester of glycerol and of the mixture of citric acid, lactic acid, linoleic acid and oleic acid (CTFA name: Glyceryl citrate/lactate/linoleate/oleate) sold by the company Huls under the name Imwitor 375; the mixed ester of succinic acid and of isostearyl alcohol with glycerol (CTFA name: Isostearyl diglyceryl succinate) sold by the company Huls under the name Imwitor 780 K; the mixed ester of citric acid and of stearic acid with glycerol (CTFA name: Glyceryl stearate citrate) sold by the company Huls under the name Imwitor 370; the mixed ester of lactic acid and of sfearic acid with glycerol (CTFA name: Glyceryl stearate lactate
- 4/ Fatty acid esters of sugars which can be used as surfactants in the nanoemulsion according to the invention, can be chosen from fatty acid esters of sugars that are solid at a temperature of less than or equal to 45° C., such as esters derived from at least one C 8 -C 22 fatty acid and at least one sugar chosen from sucrose, maltose, glucose, and fructose, and esters derived from at least one C 14 -C 22 fatty acid and methylglucose.
- the C 8 -C 22 and C 14 -C 22 fatty acids forming the fatty unit of the esters which can be used in the nanoemulsion of the invention comprise an alkyl chain chosen from saturated and unsaturated linear alkyl chains comprising, respectively, from 8 to 22 and from 14 to 22 carbon atoms.
- the fatty unit of the esters may be formed for example from stearates, behenates, arachidonates, palmitates, myristates, laurates and caprates. In one embodiment of the invention, stearates for example may be used as the fatty unit.
- esters of at least one fatty acid and of sucrose, of fatty acids and of maltose, of fatty acids and of glucose, and of fatty acids and of fructose mention may be made of sucrose monostearate, sucrose distearate and sucrose tristearate and mixtures thereof, such as the products sold by the company Croda under the name Crodesta F50, F70, F110 and F160 having, respectively, an HLB (hydrophilic lipophilic balance) of 5, 7, 11 and 16; and examples of esters of at least one fatty acids and of methylglucose which may be mentioned are methylglucose polyglyceryl-3 distearate, sold by the company Goldschmidt under the name Tego-care 450. Mention may also be made of glucose or maltose monoesters such as methyl o-hexadecanoyl-6-D-glucoside and o-hexadecanoyl-6-D-maltoside.
- the fatty alcohol ethers of sugars which can be used as surfactants in the nanoemulsion according to the invention, are solid at a temperature of less than or equal to 45° C. and may be chosen for example from ethers of at least one C 8 -C 22 fatty alcohol and of glucose, of at least one C 8 -C 22 fatty alcohol and of maltose, of at least one C 8 -C 22 fatty alcohol and of sucrose, and of at least one C 8 -C 22 fatty alcohol and of fructose, and ethers of at least one C 14 -C 22 fatty alcohol and of methylglucose.
- An example of such an ether would include, among other ethers, alkylpolyglucosides.
- the at least one C 8 -C 22 and the at least one C 14 -C 22 fatty alcohols forming the fatty unit of the ethers which may be used in the nanoemulsion of the invention can comprise at least one alkyl chain chosen from saturated and unsaturated, linear alkyl chains comprising, respectively, from 8 to 22 and from 14 to 22 carbon atoms.
- the fatty unit of the ethers may be chosen for example from decyl, cetyl, behenyl, arachidyl, stearyl, palmityl, myristyl, lauryl, capryl and hexadecanoyl units, and further such as cetearyl.
- alkylpolyglucosides such as decylglucoside and laurylglucoside, which is sold, for example, by the company Henkel under the respective names Plantaren 2000 and Plantaren 1200, cetostearyl glucoside optionally as a mixture with cetostearyl alcohol, sold for example, under the name Montanov 68 by the company SEPPIC, under the name Tego-care CG90 by the company Goldschmidt and under the name Emulgade KE3302 by the company Henkel, as well as arachidyl glucoside, for example in the form of a mixture of arachidyl alcohol and behenyl alcohol and arachidyl glucoside, sold under the name Montanov 202 by the company SEPPIC.
- the surfactant used can be for example at least one surfactant chosen from sucrose monostearate, sucrose distearate and sucrose tristearate. Additional surfactants that can be used include methylglucose polyglyceryl-3 distearate and alkylpolyglucosides.
- the fatty esters of glycerol which may be used as surfactants in the nanoemulsion according to the invention, which are solid at a temperature of less than or equal to 45° C., may be chosen for example from esters formed from at least one acid comprising a saturated linear alkyl chain comprising from 16 to 22 carbon atoms and from 1 to 10 glycerol units.
- esters formed from at least one acid comprising a saturated linear alkyl chain comprising from 16 to 22 carbon atoms and from 1 to 10 glycerol units One or more of these fatty esters of glycerol may be used in the nanoemulsion of the invention.
- esters may be chosen for example from stearates, behenates, arachidates and paimitates. In one embodiment, the esters may be chosen for example from stearates and palmitates.
- CTFA names Polyglyceryl-10 stearate, Polyglyceryl-10 distearate, Polyglyceryl-10 tristearate, Polyglyceryl-10 pentastearate
- CTFA name Polyglyceryl-2 stearate
- the fatty esters of sorbitan which may be used as surfactants in the nanoemulsion according to the invention are solid at a temperature of less than or equal to 45° C. and are chosen from C 16 -C 22 fatty acid esters of sorbitan and oxyethylenated C 16 -C 22 fatty acid esters of sorbitan.
- oxyethylenated esters generally comprise from 1 to 100 ethylene glycol units, such as from 2 to 40 ethylene oxide (EO) units.
- esters may be chosen for example from stearates, behenates, and arachidates, palmitates. In one embodiment, the esters may be chosen for example from stearates and palmitates.
- the ethoxylated fatty ethers that are solid at a temperature of less than or equal to 45° C. which may be used as surfactants in the nanoemulsion according to the invention, can be ethers formed from 1 to 100 ethylene oxide units and from at least one fatty alcohol chain comprising from 16 to 22 carbon atoms.
- the at least one fatty chain of the ethers may be chosen for example from behenyl, arachidyl, stearyl and cetyl units, and further for example from cetearyl.
- ethoxylated fatty ethers which may be mentioned are behenyl alcohol ethers comprising 5, 10, 20 and 30 ethylene oxide units (CTFA names: Beheneth-5, Beheneth-10, Beheneth-20, Beheneth-30), such as the products sold under the names Nikkol BB5, BB10, BB20 and BB30 by the company Nikko, and stearyl alcohol ether comprising 2 ethylene oxide units (CTFA name: steareth-2), such as the product sold under the name Brij 72 by the company ICI.
- CTFA names Beheneth-5, Beheneth-10, Beheneth-20, Beheneth-30
- CTFA name stearyl alcohol ether comprising 2 ethylene oxide units
- the ethoxylated fatty esters that are solid at a temperature of less than or equal to 45° C. which may be used as surfactants in the nanoemulsion according to the invention, are esters formed from 1 to 100 ethylene oxide units and from at least one fatty acid chain comprising from 16 to 22 carbon atoms.
- the at least one fatty chain in the esters may be chosen for example from stearate, behenate, arachidate and palmitate units.
- ethoxylated fatty esters which may be mentioned are the ester of stearic acid comprising 40 ethylene oxide units, such as the product sold under the name Myrj 52 (CTFA name: PEG40 stearate) by the company ICI, as well as the ester of behenic acid comprising 8 ethylene oxide units (CTFA name: PEG-8 behenate), such as the product sold under the name Compritol HD5 ATO by the company Gattefosse.
- the block copolymers of ethylene oxide (A) and of propylene oxide (B), which may be used as a surfactant in the nanoemulsion according to the invention, may be chosen for example from at least one block copolymer of formula (I):
- x, y, and z which may be identical or different, are each chosen from integers wherein x+z is an integer ranging from 2 to 100 and y is an integer ranging from 14 to 60, and optionally having an HLB value ranging from 2 to 16.
- poloxamers such as Poloxamer 231, and further such as the product sold by the company ICI under the name PLURONIC L81, which corresponds to the block copolymer of
- nonionic amphiphilic lipids that can be used for example are chosen from:
- polyglyceryl monolaurate, polyglyceryl monostearate, and polyglyceryl distearate which comprise 10 glycerol units
- anionic amphiphilic lipids of the invention can be chosen from:
- alkoxylated alkenyl succinates alkoxylated glucose alkenyl succinates
- the alkyl ether citrates which may be used as surfactants in the nanoemulsion according to the invention may be chosen for example from at least one alkyl ether citrate chosen from monoesters, diesters, and triesters formed from citric acid and from at least one oxyethylenated fatty alcohol comprising at least one alkyl chain chosen from linear and branched, saturated and unsaturated alkyl chains comprising from 8 to 22 carbon atoms, and comprising from 3 to 9 ethoxylated groups.
- One embodiment of the invention may comprise at least one of the above-mentioned citrates in the nanoemulsion.
- Another embodiment may comprise at least two of the above-mentioned citrates in the nanoemulsion.
- These citrates may be chosen, for example, from the monoesters, diesters, and triesters of citric acid and of ethoxylated lauryl alcohol, comprising from 3 to 9 ethoxylated groups, which are, for example, sold by the company Witco under the name WITCONOL EC.
- WITCONOL EC 2129 which is predominantly a dilaureth-9 citrate
- Witconol EC 3129 which is predominantly a trilaureth-9 citrate
- the alkyl ether citrates used as surfactants can for example be neutralized to a pH of about 7 with at least one base chosen from inorganic bases (such as sodium hydroxide, potassium hydroxide and ammonia) and organic bases (such as mono-ethanolamine, diethanolamine, triethanolamine, 1,3-aminomethylpropanediol, N-methylglucamine and basic amino acids like arginine and lysine).
- inorganic bases such as sodium hydroxide, potassium hydroxide and ammonia
- organic bases such as mono-ethanolamine, diethanolamine, triethanolamine, 1,3-aminomethylpropanediol, N-methylglucamine and basic amino acids like arginine and lysine.
- alkenyl succinates which may be used as surfactants in the nanoemulsion of the invention can, for example, be chosen from alkoxylated alkenyl succinates, alkoxylated glucose alkenyl succinates, and alkoxylated methylgilucose alkenyl succinates that correspond to compounds of formulae (I) and (II):
- R arid R′ which may be identical or different, are each chosen from linear and branched alkenyl groups comprising from 6 to 22 carbon atoms,
- E is chosen from oxyethylene chains of formula (C 2 H 4 O) n in which n is chosen from integers ranging from 2 to 100, oxypropylene chains of formula (C 3 H 6 O) n in which n′ is chosen from integers ranging from 2 to 100, and random and block copolymers comprising chains chosen from oxyethylene chains of formula (C 2 H 4 O) n and oxypropylene chains of formula (C 3 H 6 O) n′ (such as oxyethylenated glucose copolymers, oxyethylenated methylglucose copolymers, oxypropylenated glucose copolymers, and oxypropylenated methylglucose copolymers) such that:
- n and n′ are integer ranging from 2 to 100,
- the oxyethylenated and oxypropylenated glucose groups of said oxyethylenated and oxypropylenated glucose copolymers comprise on average from 4 to 100, respectively, oxyethylene or oxypropylene units distributed on all the hydroxyl functions, and
- the oxyethylenated and oxypropylenated methylglucose groups of said oxyethylenated and oxypropylenated methyl glucose copolymers comprise on average from 4 to 100 oxyethylene or oxypropylene units distributed on all the hydroxyl functions.
- n and n′ are average values and are thus not necessarily integers.
- n is chosen from integers ranging from 5 to 60, such as from 10 to 30.
- R and R′ are each chosen from linear alkenyl groups comprising from 8 to 22 carbon atoms, such as from 14 to 22 carbon atoms.
- R and R′ which may be identical or different, each may be, for example, chosen from the hexadecenyl group comprising 16 carbon atoms and the octadecenyl group comprising 18 carbon atoms.
- the acid function —COOH in the surfactants of formulae (I) and (II) is generally in the nanoemulsion of the invention in a form which is neutralized with a neutralizing agent chosen, for example, from inorganic bases (such as sodium hydroxide, potassium hydroxide and ammonia) and organic bases (such as monoethanolamine, diethanolamine, triethanolamine, 1,3-aminomethylpropanediol, N-methylglucamine, and basic amino acids, such as arginine and lysine).
- a neutralizing agent chosen, for example, from inorganic bases (such as sodium hydroxide, potassium hydroxide and ammonia) and organic bases (such as monoethanolamine, diethanolamine, triethanolamine, 1,3-aminomethylpropanediol, N-methylglucamine, and basic amino acids, such as arginine and lysine).
- the at least one amphiphilic lipid chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids may be present in the aqueous phase (if more hydrophilic in nature) or in the oily phase (if more lipophilic in nature) of the nanoemulsion.
- the at least one amphiphilic lipid chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids may be present in the nanoemulsion of the invention in an amount ranging, for example, from 0.2% to 15% by weight relative to the total weight of the nanoemulsion, such as from 1% to 8% by weight relative to the total weight of the nanoemulsion.
- the weight ratio of the amount of oily phase with respect to the amount of the at least one amphiphilic lipid (surfactant) ranges for example from 1:1 to 10:1, such as from 1.2:1 to 10:1, further such as from 1.5:1 to 6:1, and furthermore such as from 2:1 to 5:1.
- amount of oily phase herein means the total amount of constituents of this phase excluding the amount of the at least one amphiphilic lipid chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids.
- the nanoemulsion of the invention may also comprise at least one additional ionic amphiphilic lipid other than the ionic amphiphilic lipids described above.
- additional ionic amphiphilic lipids may be added to possibly further improve the stability of the dispersion.
- the at least one additional ionic amphiphilic lipid which may be used in the nanoemulsions of the invention can, for example, be chosen from cationic amphiphilic lipids and anionic amphiphilic lipids other than the anionic amphiphilic lipids described above, such as from:
- lipoamino acids and salts thereof such as monosodium and disodium acylglutamates, for instance the disodium salt of N-stearoyl-L-glutamic acid, sold under the name ACYLGLUTAMATE HS21 by Ajinomoto;
- R which may be identical or different in embodiments wherein more than one of said alkylsulfonic derivative is used, is chosen from C 16 -C 22 alkyl groups, such as C 16 H 33 and C 18 H 37 groups, and M is chosen from alkali metals and alkaline-earth metals, such as sodium.
- Representative cationic amphiphilic lipids that can be used in the nanoemulsions of the invention can be chosen from, for example, quaternary ammonium salts, fatty amines, and salts thereof.
- quaternary ammonium salts are, for example, chosen from:
- R 1 , R 2 , R 3 , and R 4 which may be identical or different, are each chosen from linear and branched aliphatic groups comprising from 1 to 30 carbon atoms, and aromatic groups, such as aryl and alkylaryl groups.
- the aliphatic groups can comprise hetero atoms, such as oxygen, nitrogen, and sulfur, and halogens.
- aliphatic groups can be chosen, for example, from alkyl, alkoxy, polyoxy(C 2 -C 6 )alkylene, alkylamide, (C 2 -C 22 )alkylamido(C 2 -C 6 )alkyl, (C 12 -C 22 )alkylacetate, and hydroxyalkyl groups comprising from 1 to 30 carbon atoms;
- X ⁇ is an anion chosen from halides, phosphates, acetates, lactates, (C 2 -C 6 )alkyl sulfates, alkyl sulfonates, and alkylaryl sulfonates;
- R 5 is chosen from alkenyl and alkyl groups comprising from 8 to 30 carbon atoms, for example groups derived from tallow fatty acid,
- R 6 is chosen from a hydrogen atom, C 1 -C 4 alkyl groups, and alkenyl and alkyl groups comprising from 8 to 30 carbon atoms,
- R 7 is chosen from C 1 -C 4 alkyl groups
- R 8 is chosen from a hydrogen atom and C 1 -C 4 alkyl groups
- X ⁇ is an anion chosen from halides, phosphates, acetates, lactates, alkyl sulfates, alkyl sulfonates, and alkylaryl sulfonates.
- R 5 and R 6 are chosen from alkenyl and alkyl groups comprising from 12 to 21 carbon atoms, for example, alkenyl and alkyl groups derived from tallow fatty acid, and wherein said R 5 and R 6 are chosen such that said quaternary ammonium salts of imidazolinium comprise at least one alkenyl group and at least one alkyl group, R 7 is methyl, and R 8 is hydrogen.
- Such products are, for example, (1) Quaternium-27 (International Cosmetic Ingredient Dictionary and Handbook, hereafter “CTFA”, 1997), i.e., “Rewoquat” W75, W75PG, and W90, and (2) Quaternium-83 5 (CTFA 1997), i.e., “Rewoquat” W75HPG, which are sold by the company Witco.
- CFA International Cosmetic Ingredient Dictionary and Handbook
- quaternary ammonium salts are, for example, chosen from:
- R 9 is chosen from aliphatic groups comprising from 16 to 30 carbon atoms
- R 10 , R 11 , R 12 , R 13 and R 14 which may be identical or different, are each chosen from a hydrogen atom and alkyl groups comprising from 1 to 4 carbon atoms, and
- X ⁇ is an anion chosen from halides, acetates, phosphates, nitrates and methyl sulfates.
- diquaternary ammonium salts can comprise propane tallow diammonium dichloride.
- Quaternary ammonium salts comprising at least one ester function.
- the quaternary ammonium salts comprising at least one ester function that can be used according to the invention are, for example, those of formula (VII) below:
- R 15 is chosen from C 1 -C 6 alkyl groups, C 1 -C 6 hydroxyalkyl groups and C 1 -C 6 dihydroxyalkyl groups;
- R 16 is chosen from:
- R 18 is chosen from:
- R 17 , R 19 and R 21 which may be identical or different, are each chosen from linear and branched, saturated and unsaturated, C 1 -C 21 , hydrocarbon-based groups;
- n, p and r which may be identical or different, are each chosen from integers ranging from 2to 6;
- y is chosen from integers ranging from 1 to 10;
- x and z which may be identical or different, are each chosen from integers ranging from 0 to 10;
- X ⁇ is chosen from simple and complex, organic and inorganic anions
- the R 15 alkyl groups may be linear or branched and further, for example, linear.
- R 15 may be chosen from methyl, ethyl, hydroxyethyl and dihydroxypropyl groups and further for example from methyl and ethyl groups.
- the sum x+y+z may for example range from 1 to 10.
- R 16 When R 16 is chosen from linear and branched, saturated and unsaturated, C 1 -C 22 hydrocarbon-based groups, R 16 may be long and comprise from 12 to 22 carbon atoms, or short and comprise from 1 to 3 carbon atoms.
- R 18 when R 18 is chosen from linear and branched, saturated and unsaturated, C 1 -C 6 hydrocarbon-based groups, R 18 may for example comprise from 1 to 3 carbon atoms.
- R 17 , R 19 , and R 21 which may be identical or different, can each, for example, be chosen from linear and branched, saturated and unsaturated C 1 -C 2 , hydrocarbon-based groups, and for example from linear and branched, saturated and unsaturated, C 11 -C 21 , alkyl and alkenyl groups.
- x and z which may be identical or different, can for example each be chosen from 0 or 1.
- y for example may be equal to 1.
- n, p and r which may be identical or different, can for example each be chosen from 2 and 3 and in one embodiment equal to 2.
- the anion for example can be chosen from halides (chloride, bromide, and iodide) and alkyl sulfates, such as methyl sulfate.
- halides chloride, bromide, and iodide
- alkyl sulfates such as methyl sulfate.
- methanesulfonate, phosphate, nitrate, tosylate, anions derived from organic acids, such as acetate and lactate, and any other anions compatible with the ammonium comprising an ester function may be used.
- the anion X ⁇ can be chosen from chloride and methyl sulfate.
- ammonium salts of formula (VII) are those in which:
- R 15 is chosen from methyl and ethyl groups
- x and y are equal to 1;
- z is equal to 0 or 1;
- n, p and r are equal to 2;
- R 16 is chosen from:
- R 18 is chosen from:
- R 17 , R 19 and R 21 which may be identical or different, are each chosen from linear and branched, saturated and unsaturated, C 13 -C 17 hydrocarbon-based groups, such as from linear and branched, saturated and unsaturated C 13 -C 17 alkyl and alkenyl groups.
- hydrocarbon-based groups can for example be linear.
- Representative compounds of formula (VII) are chosen from diacyloxyethyldimethylammonium, diacyloxyethylhydroxyethylmethylammonium, monoacyloxyethyldihydroxyethylmethylammonium, triacyloxyethylmethylammonium and monoacyloxyethylhydroxyethyldimethylammonium salts (for example chloride and methyl sulfate).
- the acyl groups can for example comprise from 14 to 18 carbon atoms and can for example be obtained from plant oils, such as palm oil and sunflower oil. When the compound comprises several acyl groups, these groups, which may be independently chosen, may independently be identical or different.
- alkylating agent such as alkyl halides (such as methyl and ethyl halides), dialkyl sulfates (for example dimethyl and diethyl sulfates), methyl methanesulfonate, methyl para-toluenesulfonate, glycol chlorohydrin and glycerol chlorohydrin.
- alkylating agent such as alkyl halides (such as methyl and ethyl halides), dialkyl sulfates (for example dimethyl and diethyl sulfates), methyl methanesulfonate, methyl para-toluenesulfonate, glycol chlorohydrin and glycerol chlorohydrin.
- Such compounds are sold, for example, under the names Dehyquart by the company Henkel, Stepanquat by the company Stepan, Noxamium by the company Ceca and Rewoquat WE 18 by the company Rewo-Witco.
- One embodiment of the invention can comprise at least one quaternary ammonium monoester salt, at least one quaternary ammonium cliester salt, and at least one quaternary ammonium triester salt, wherein said quaternary ammonium diester salt is, for example, present in a majority by weight.
- Such an embodiment may comprise, for example, 15% to 30% by weight of acyloxyethyldihydroxyethylmethylammonium methyl sulfate, 45% to 60% by weight of diacyloxyethylhydroxyethylmethylammonium methyl sulfate, and 15% to 30% by weight of triacyloxyethylmethylammonium methyl sulfate, wherein said acyl groups comprise from 14 to 18 carbon atoms, and wherein said acyl groups are derived from palm oil that is optionally partially hydrogenated.
- ammonium salts comprising at least one ester function, described in U.S. Pat. Nos. 4,874,554 and 4,137,180, the disclosures of which are incorporated by reference herein.
- Representative quaternary ammonium salts of formula (IV) include tetraalkylammonium chlorides such as, for example, dialkyldimethylammonium chlorides and alkyltrimethylammonium chlorides, in which the alkyl group comprises from 12 to 22 carbon atoms, for example behenyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium chloride, and benzyldimethylstearylammonium chloride, and, stearamidopropyidimethyl(myristyl acetate)ammonium chloride sold under the name “Cepharyl 70” by the company Van Dyk.
- tetraalkylammonium chlorides such as, for example, dialkyldimethylammonium chlorides and alkyltrimethylammonium chlorides, in which the alkyl group comprises from 12 to 22 carbon atoms, for example behenyltrimethylammonium chloride, distearyld
- the quatemary ammonium salt can be behenyltrimethylammonium chloride.
- the at least one additional ionic amphiphilic lipid chosen from cationic amphiphilic lipids and anionic amphiphilic lipids is generally present in the nanoemulsion of the invention in an amount ranging for example from 0.01% to 10% by weight relative to the total weight of the nanoemulsion, such as for example from 0.2% to 5% by weight relative to the total weight of the nanoemulsion.
- the at least one oil that may be used in the nanoemulsion of the invention is, for example, chosen from:
- animal and plant oils formed by fatty acid esters of polyols such as liquid triglycerides, for example sunflower oil, corn oil, soybean oil, avocado oil, jojoba oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, fish oils, glyceryl tricaprocaprylate, and plant and animal oils of formula R 9 COOR 10 in which R 9 is chosen from fatty acid residues comprising from 7 to 29 carbon atoms and R 10 is chosen from linear and branched hydrocarbon-based chains comprising from 3 to 30 carbon atoms, such as alkyl and alkenyl, for example, purcellin oil and liquid jojoba wax;
- polyols such as liquid triglycerides, for example sunflower oil, corn oil, soybean oil, avocado oil, jojoba oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, fish oils, glyceryl tricaprocaprylate, and plant and animal oils of formula R 9 COOR 10 in
- natural and synthetic essential oils such as, for example, eucalyptus oil, lavandin oil, lavender oil, vetiver oil, Litsea cubeba oil, lemon oil, sandalwood oil, rosemary oil, camomile oil, savory oil, nutmeg oil, cinnamon oil, hyssop oil, caraway oil, orange oil, geraniol oil, cade oil and bergamot oil;
- mineral oils such as hexadecane and liquid paraffin
- halogenated oils such as fluorocarbons, for example, fluoroamines (including for example perfluorotributylamine), fluorohydrocarbons (including for example perfluorodecahydro-naphthalene), fluoroesters and fluoroethers;
- fluorocarbons for example, fluoroamines (including for example perfluorotributylamine), fluorohydrocarbons (including for example perfluorodecahydro-naphthalene), fluoroesters and fluoroethers;
- esters of at least one mineral acid and of at least one alcohol [0215] esters of at least one mineral acid and of at least one alcohol
- Volatile and non-volatile silicone oils can for example be used in the presence of at least one non-silicon oil (oil which does not contain silicium atom).
- the total amount of such silicone oils is generally an amount ranging for example from 5% to 50% by weight relative to the total weight of oils.
- the synthetic oils can be chosen from for example polyolefins, such as poly- ⁇ -olefins and further such as:
- poly- ⁇ -olefins chosen from hydrogenated and non-hydrogenated polybutene poly- ⁇ -olefins, such as hydrogenated and non-hydrogenated polyisobutene poly- ⁇ -olefins.
- One embodiment may comprise at least one isobutylene oligomer with a molecular weight of less than 1000 and at least one polyisobutylene with a molecular weight of greater than 1000 such as for example ranging from 1000 to 15000.
- Representative carboxylic acid esters include monocarboxylic acid esters, dicarboxylic acid esters, tricarboxylic acid esters, and tetracarboxylic acid esters.
- the total number of carbons in the esters is generally equal to 10 or more, such as less than 100 and further such as less than 80.
- the monocarboxylic acid esters can be chosen from saturated and unsaturated, linear and branched C 1 -C 26 aliphatic acid monoesters derived from alcohols chosen from saturated and unsaturated, linear and branched C 1 -C 26 aliphatic alcohols, wherein the total number of carbons in the esters is generally equal to 10 or more.
- esters derived from C 4 -C 22 dicarboxylic acids and C 1 -C 22 alcohols esters derived from C 4 -C 22 tricarboxylic acids and C 1 -C 22 alcohols, esters derived from acids chosen from mono-, di-, and tricarboxylic acids and alcohols chosen from C 2 -C 26 di-, tri-, tetra- and pentahydroxy alcohols.
- esters mentioned above which can be used include ethyl palmitate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-octyidecyl palmitate, alkyl myristates such as isopropyl myristate, butyl myristate, cetyl myristate and 2-octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanate, and cetyl octanoate.
- alkyl myristates such as isopropyl myristate, butyl myristate, cetyl myristate and 2-octyldodecyl myristate, hexyl stearate, butyl stearate
- the at least one oil of the nanoemulsions in accordance with the invention is generally present in an amount ranging for example from 2% to 40% by weight relative to the total weight of the nanoemulsion, such as for example from 4% to 30% by weight relative to the total weight of the nanoemulsion, and further such as for example from 8% to 20% by weight relative to the total weight of the nanoemulsion.
- compositions according to the invention can also comprise at least one aminosilicone.
- the terms at least one “silicone” and “polysiloxane” are synonymous and are understood to include linear and cyclic, branched and crosslinked organosilicon polymers and organosilicon oligomers of variable molecular weight, obtained by polymerization and/or polycondensation of suitably functionalized silanes, and which comprise repeating units in which the silicon atoms are connected together by oxygen atoms (siloxane bond ⁇ —Si—O—Si ⁇ ) and are optionally substituted with at least one hydrocarbon-based group, which is bonded by way of a carbon atom of said hydrocarbon-based group to said silicon atoms.
- hydrocarbon-based groups are alkyl groups, such as C 1 -C 10 alkyl groups and further such as methyl, fluoroalkyl groups, aryl groups, such as phenyl, and alkenyl groups such as vinyl; other groups that can be bonded, either directly or by way of a hydrocarbon-based linking group, to the siloxane chain can be chosen from a hydrogen atom, halogens, such as chlorine, bromine and fluorine, thiols, alkoxy groups, polyoxyalkylene groups, such as polyoxyethylene and polyoxypropylene, polyether groups, hydroxyl, hydroxyalkyl groups, amide groups, acyloxy groups, acyloxyalkyl groups, amphoteric groups, betaine groups, anionic groups such as carboxylates, thioglycolates, sulfosuccinates, thiosulfates, phosphates and sulfates, this list obviously being in no way limiting (so-called “
- the term at least one “aminosilicone” means any silicone comprising at least one amine chosen from primary, secondary, and tertiary amines or at least one quaternary ammonium group. Mention may thus be made of:
- x′ and y′ are integers chosen such that generally the weight-average molecular weight of said aminosilicone ranges from 5000 to 500000 approximately;
- G is chosen from a hydrogen atom, a phenyl group, OH group, and C 1 -C 8 alkyl groups, for example methyl,
- a is an integer ranging from 0 to 3, and in one embodiment a is 0,
- b is chosen from 0 and 1, and in one embodiment b is 1,
- n and n are numbers such that the sum (n+m) can range for example from 1 to 2000, such as for example from 50 to 150, wherein n can be for example chosen from numbers ranging from 0 to 1999, such as for example from 49 to 149, and
- m can be chosen from numbers ranging for example from 1 to 2000, such as for example from 1 to 10;
- R′ is a monovalent group of formula —C q H 2q L in which q is a number from 2 to 8 and
- L is an optionally quaternized amine group chosen from the groups:
- R′′ can be chosen from a hydrogen atom, phenyl groups, benzyl groups, and saturated monovalent hydrocarbon-based groups, such as for example an alkyl group comprising from 1 to 20 carbon atoms, and A ⁇ is chosen from halide ions such as, for example, fluoride, chloride, bromide and iodide.
- One aminosilicone of said at least one aminosilicone corresponding to formula (V) is known as “trimethylsilylamodimethicone” of formula (VI):
- n and n are numbers such that the sum (n+m) can range for example from 1 to 2000, such as for example from 50 to 150, wherein n can be for example chosen from numbers ranging from 0 to 1999, such as for example from 49 to 149, and
- m can be chosen from numbers ranging for example from 1 to 2000, such as for example from 1 to 10.
- Additional said at least one aminosilicone of the invention include:
- R 5 is chosen from monovalent hydrocarbon-based groups comprising from 1 to 18 carbon atoms, such as C 1 -C 18 alkyl groups and C 2 -C 18 alkenyl groups, for example methyl;
- R 6 is chosen from divalent hydrocarbon-based groups, such as divalent C 1 -C 18 alkylene groups and divalent C 1 -C 18 alkylenoxy groups, for example C 1 -C 8 alkylenoxy groups, wherein said R 6 is bonded to the Si by way of an SiC bond;
- Q ⁇ is an anion that can be for example chosen from halide ions, such as chloride, and organic acid salts (such as acetate);
- r is an average statistical value ranging from 2 to 20, such as from 2 to 8;
- s is an average statistical value ranging from 20 to 200, such as from 20 to 50.
- a silicone which falls within this class is the silicone sold by the company Union Carbide under the name “Ucar Silicone ALE 56”.
- At least one aminosilicone include:
- groups R 7 which may be identical or different, are each chosen from monovalent hydrocarbon-based groups comprising from 1 to 18 carbon atoms, such as C 1 -C 18 alkyl groups, for example methyl, C 2 -C 18 alkenyl groups, and rings comprising 5 or 6 carbon atoms;
- R 6 is chosen from divalent hydrocarbon-baseci groups, such as divalent C 1 -C 18 alkylene groups and divalent C 1 -C 18 alkylenoxy, for example C 1 -C 8 , group connected to the Si by an SiC bond;
- R 8 which may be identical or different, represent a hydrogen atom, a monovalent hydrocarbon-based group comprising from 1 to 18 carbon atoms, and in particular a C 1 -C 18 alkyl group, a C 2 -C 18 alkenyl group or a group —R 6 —NHCOR 7 ;
- X ⁇ is an anion such as a halide ion, in particular chloride, or an organic acid salt (acetate, etc.);
- r represents an average statistical value from 2 to 200, such as for example from 5 to 100.
- Silicones falling within this class are the silicones sold by the company Goldschmidt under the names Abil Quat 3270, Abil Quat 3272 and Abil Quat 3474.
- said at least one aminosilicone can be present in at least one form chosen from the form of an oil, the form of a solution chosen from aqueous, alcoholic and aqueous-alcoholic solutions, the form of a dispersion, and the form of an emulsion.
- the aminosilicones can be present in the form of an emulsion, such as emulsions chosen from microemulsions and nanoemulsions.
- the at least one aminosilicone is generally present in an amount ranging for example from 0.05% to 10% by weight relative to the total weight of the nanoemulsion, such as for example from 0.1% to 5% by weight relative to the total weight of the nanoemulsion, and further such as from 0.3% to 3% by weight relative to the total weight of the nanoemulsion.
- the nanoemulsions in accordance with the present invention may comprise at least one solvent, for example, if desired, to improve the transparency of the formulation.
- the at least one solvent can be for example chosen from:
- C 1 -C 8 alcohols such as ethanol
- glycols such as glycerol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, polyethylene glycols comprising from 4 to 16, for example, from 8 to 12 ethylene oxide units.
- the at least one solvent such as those mentioned above are generally present in the nanoemulsions of the invention in an amount ranging for example from 0.01% to 30% by weight relative to the total weight of the nanoemulsion.
- the use of the alcohols as defined above, in an amount of at least 5% by weight relative to the total weight of the nanoemulsion, such as for example at least 15% by weight relative to the total weight of the nanoemulsion, may make it possible for one skilled in the art to obtain nanoemulsions without a preserving agent.
- the nanoemulsions of the invention can additionally comprise at least one active agent chosen from water-soluble, water-dispersible, and liposoluble cosmetic active agents and water-soluble, water-dispersible, and liposoluble dermopharmaceutical active agents.
- the liposoluble active agents are present in the oily globules of the nanoemulsion, while the water-soluble and water-dispersible active agents are present in the aqueous phase of the nanoemulsion.
- Non-limiting examples of said at least one active agent include vitamins and derivatives thereof, such as vitamin E, vitamin E acetate, vitamin C and its esters, B vitamins, vitamin A alcohol and vitamin A retinol, vitamin A acid and vitamin A retinoic acid and its derivatives, provitamins such as panthenol, vitamin A palmitate, niacinamide, ergocalciferol, antioxidants, essential oils, wetting agents, silicone and non-silicone sunscreens, preserving agents, sequestering agents, softeners, dyes, viscosity modifiers, foam modifiers, foam stabilizers, nacreous agents, pigments, moisturizers, antidandruff agents, antiseborrhoeic agents, proteins, ceramides, pseudoceramides, fatty acids comprising linear and branched C 16 -C 40 chains, such as 18-methyl eicosanoic acid, plasticizers, hydroxy acids, electrolytes, polymers, such as cationic polymers, and fragrances.
- the oil globules in the nanoemulsions of the invention can for example have an average size ranging from 20 nm to 150 nm, such as for example from 30 nm to 100 nm and further such as for example from 40 nm to 80 nm.
- the nanoemulsions according to the invention generally have a transparent to blueish appearance. Their transparency is measured by a coefficient of transmittance at 600 nm ranging for example from 10% to 90%, or alternatively by a turbidity ranging for example from 60 NTU to 600 NTU such as for example from 70 NTU to 400 NTU, the turbidity being measured using a Hach Model 2100 P portable turbidimeter.
- nanoemulsions of the invention may be obtained by a process comprising:
- Such a process makes it possible to produce, at room temperature, nanoemulsions that tend to be compatible with heat-sensitive active compounds and that can comprise large amounts of oils, such as fragrances comprising fatty substances, whereby the possibility of denaturing such oils tends to be reduced.
- composition for topical use such as a composition chosen from cosmetic compositions and dermopharmaceutical compositions, wherein said composition for topical use comprises a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
- compositions in accordance with the invention may be used for at least one use chosen from washing keratin materials, cleaning keratin materials, and removing make-up from keratin materials such as the hair, the skin, the eyelashes, the eyebrows, the nails and mucous membranes.
- compositions of the invention can for example be in forms chosen from shampoos, rinse-out conditioners, leave-in conditioners, permanent-waving compositions, relaxing compositions, dyeing compositions, bleaching compositions, compositions to be applied before a procedure chosen from dyeing, bleaching, permanent-waving and relaxing the hair, compositions to be applied after a procedure chosen from dyeing, bleaching, permanent-waving and relaxing the hair, and compositions to be applied between the two steps of a procedure chosen from permanent-waving and relaxing the hair.
- compositions may also be in at least one form chosen from hairsetting lotions, blow-drying lotions, fixing compositions (lacquers), and styling compositions such as, for example, gels and mousses.
- compositions can be packaged in various forms chosen from vaporizers, pump-dispenser bottles and aerosol containers in order to ensure application of the composition in vaporized form or in the form of a mousse.
- Such packaging forms are indicated, for example, when it is desired to obtain a spray, a lacquer or a mousse for fixing or treating the hair.
- composition according to the invention when packaged in aerosol form in order to obtain an aerosol lacquer or mousse, it comprises at least one propellant which may be chosen from volatile hydrocarbons such as n-butane, propane, isobutane and pentane, chlorohydrocarbons, fluorohydrocarbons, carbon dioxide, nitrous oxide, dimethyl ether, nitrogen and compressed air.
- propellant such as volatile hydrocarbons such as n-butane, propane, isobutane and pentane, chlorohydrocarbons, fluorohydrocarbons, carbon dioxide, nitrous oxide, dimethyl ether, nitrogen and compressed air.
- compositions in accordance with the invention may be used to care for a keratin material chosen from for example hair, body skin, facial skin, eyelashes, eyebrows, nails, and mucous membranes.
- compositions in accordance with the invention may be used to make up a keratin material chosen from for example hair, body skin, facial skin, eyelashes, eyebrows, nails, and mucous membranes.
- a cosmetic product base such as for example lotions, sera, milks, creams and eaux de toilette for caring, making-up, or removing make-up from a keratin material, such as for example body skin, facial skin, the scalp, the hair, the nails, the eyelashes, the eyebrows, and mucous membranes, and further such as for example the lips
- said cosmetic product base comprises at least one nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
- Another subject of the invention relates to a non-therapeutic care process for a keratin material comprising applying a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block to said keratin material chosen from for example the skin, the hair, the eyelashes, the eyebrows, the nails, mucous membranes and the scalp.
- the nonionic and cationic amphiphilic lipids were homogenized with the oil and the lipophilic (liposoluble) active agents and adjuvants at a temperature of about 80° C. and the mixture was allowed to cool to 50° C., with stirring using a doctor blade;
- a third phase C was prepared containing 35% of the water and the nonionic polymer. This phase was melted at 80° C. and was then cooled to 60° C.;
- phases A and B were then mixed together using a turbomixer homogenizer and the mixture was then homogenized using a high-pressure homogenizer such as a Soavi-Niro machine at a pressure of 1200 bar, in 4 homogenization runs, while keeping the temperature of the product below about 35° C.
- a turbomixer homogenizer such as a Soavi-Niro machine at a pressure of 1200 bar
- Phase C was added with stirring, at room temperature.
- Phase A PEG-400 isostearate as sold by Unichema 2 g Behenyltrimethylammonium chloride 2 g (1.6 g AM) containing 80% AM (Genamin DDMP from Goldschmidt) Avocado oil 5.25 g Jojoba oil 5.25 g Fragrance qs Preserving agent qs Cyclopentadimethylsiloxane 3.5 g (DC245 from Dow Corning)
- Phase B Trimethylsilylamodimethicone micro- 6 g (1.2 g AM) emulsion containing 20% AM, sold under the name SME 253 by General Electric Dipropylene glycol 10 g Sorbitan monolaurate oxyethylenated 0.5 g with 20 mol of ethylene oxide (Tween 20 from ICI) Demineralized water 38 g Glycerol 5 g
- Phase C Polycondensate comprising at least one 5 g (0.75
- a nanoemulsion in which the size of the oil globules is about 63 nm was obtained. This composition was stable on storage for 2 months at room temperature and at 45° C.
- composition had a turbidity of 318 NTU and a viscosity of 1300 mPa.s (cP).
- the turbidity was measured using a Hach Model 2100 P turbidimeter at 25° C., in NTU units (Nephelometric turbidity units). (The machine was calibrated with formazine).
- Aculyn 46 is replaced with 1% AM by weight of Carbopol Ultrez, a composition which is not thickened, not transparent (turbidity>1000 NTU) and not stable on storage is obtained.
- Phase A PEG-400 isostearate 4.5% Disodium acylglutamate 0.5% Isopropyl myristate 5% Isocetyl stearate 10%
- Phase B Dipropylene glycol 10% Glycerol 5%
- Phase C SER-AD FX 1100 (Servo Delden) 0.5% Distilled water 19.5%
- Phase A PEG-400 isostearate 4.5% 4.5% 4.5% 4.5% Disodium acylglutamate 0.5% 0.5% 0.5% 0.5% 0.5% Isopropyl myristate 5% 5% 5% 5% 5% Isocetyl stearate 10% 10% 10% 10%
- Phase B Dipropylene glycol 10% 10% 10% 10% Glycerol 5% 5% 5% Distilled water 45% 45% 45% 45% 45%
- Phase C Rheolate 205 0.5% — — — Esaflor HM 22 — 0.1% 0.75% — Natrosol Grade Plus 330 — — — 0.5% Distilled water qs 100% 100% 100% 100% 100% 100% Ex. 3 Ex. 4 Ex. 5 Ex.
Abstract
Oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block. Processes comprising such oil-in-water nanoemulsions.
Description
- The present invention relates to O/W (oil-in-water) nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block. The present invention also relates to the use of such nanoemulsions in topical application, for example, in cosmetics and/or in dermopharmacy.
- The term “nanoemulsion” means a metastable oil-in-water emulsion (wherein, for example, the emulsion can comprise an oily phase dispersed in an aqueous phase) whose oil globule size is less than 150 nm, these oil globules being stabilized with a crown of amphiphilic lipids which can optionally form a liquid crystal phase of lamellar type located at the oil/aqueous phase interface. The transparency of these emulsions derives from the small size of the oil globules, wherein said small size can be obtained for example by using a high-pressure homogenizer. Nanoemulsions are to be distinguished from microemulsions by their structure. Microemulsions are thermodynamically stable dispersions comprising micelles of at least one amphiphilic lipid swollen with oil. Furthermore, microemulsions do not require considerable mechanical energy to be prepared. They form spontaneously simply by placing the constituents in contact. At least one possible drawback of microemulsions can be associated with the presence of a high proportion of surfactants, which may tend to lead to intolerance and entailing a sticky feel when applied to the skin. Moreover, their field of formulation is generally narrow and their temperature stability can be limited.
- The at least one (as used throughout herein above and below, the expression “at least one” means one or more and thus includes individual components as well as mixtures/combinations) amphiphilic lipid is present in an amphiphilic lipid phase, which comprises at least one amphiphilic lipid chosen from for example nonionic and ionic amphiphilic lipids. The expression “amphiphilic lipid” means any molecule of bipolar structure comprising at least one hydrophobic portion and at least one hydrophilic portion having the property of reducing the surface tension of water (g<55 mN/m) and of reducing the interface tension between water and an oily phase. The synonyms of amphiphilic lipid are, for example: surfactant, surface agent, and emulsifier. The prior art discloses nanoemulsions comprising an amphiphilic lipid phase comprising phospholipids, a cationic lipid, water and a hydrophobic sunscreen. They are obtained by a high-pressure homogenization process. These nanoemulsions can have at least one drawback, for example, such nanoemulsions may tend to be unstable on storage at the conventional storage temperatures, i.e., between 0° C. and 45° C. Such nanoemulsions may lead to yellow compositions and may produce unpleasant odors, which may develop after a few days of storage. Furthermore, such nanoemulsions tend to exhibit less favorable cosmetic properties. They are described in the “DCI” review of April 1996, pages 46-48, the disclosure of which is incorporated by reference herein.
- Moreover, documents EP-A-728 460 and EP-A-780 114, the disclosures of which are incorporated by reference herein, disclose nanoemulsions based on fluid nonionic amphiphilic lipids and on silicone surfactants.
- However, all these nanoemulsions are fluid. For certain uses, products are sought which can be measured out and taken up easily by hand. To do this, these products must have a certain level of consistency or viscosity. Specifically, a liquid product may be more difficult to measure out and tends to run easily between the fingers.
- It is known practice to use, as thickeners for aqueous media, water-soluble or water-dispersible polymers, such as optionally crosslinked polymers for example polycarboxyvinylic acids, such as carbopol, wherein said polymers can have a long chain length and a high molecular weight.
- When such polymers are used in compositions in the form of nanoemulsions, some of such nanoemulsions may tend to exhibit a decrease in at least one characteristic, such as stability and transparency.
- Thus, there is still a need for a thickening system which can conveniently thicken, or even gel, a composition in the form of an oil-in-water nanoemulsion, while minimizing any possible influence that it may have on the cosmetic properties of said compositions.
- The inventors have discovered, unexpectedly, that oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil and at least one amphiphilc lipid can be thickened with at least one nonionic polymer, for example at least one non-ionic polymer chosen from water-soluble and water-dispersible non-ionic polymers comprising at least one hydrophobic block and at least one hydrophilic block.
- One subject of the present invention is oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block, wherein the weight ratio of the amount of said at least one oil to the amount of said at least one amphiphilic lipid ranges for example from 1:1 to 10:1, such as for example from 1.2:1 to 6:1.
- Another subject of the invention is a process for thickening oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm comprising at least one oil and at least one amphiphilc lipid comprising including at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block in said nanoemulsions.
- As a non-restrictive explanation, it may be considered that, in the context of the invention, the increase in the viscosity of the medium may result from the formation of a network of oil particles, said network involving combinations of hydrophobic type between, on the one hand, the hydrophobic groups of the polymer and, on the other hand, the hydrophobic cores of the oil particles. The existence of labile bonds between the particles may be responsible in part for increasing the viscosity of the mixture.
- The nanoemulsions in accordance with the invention are prepared at temperatures ranging for example from 4° C. to 45° C. and are compatible with heat-sensitive active agents. If desired, the nanoemulsions can comprise large amounts of oil. Such nanoemulsions can for example comprise large amounts of fragrance and can improve their remanence. They can also promote the penetration of the active agents into the superficial layers of the skin and the deposition of active agent onto keratin fibres such as the hair. Hair treated with these nanoemulsions may be at least one of the following: shiny, while simultaneously avoiding a greasy look or feel, softer and more lively in nature, while also tending to disentangle easily.
- The cosmetic composition, such as for example a hair composition, obtained by comprising the nanoemulsions of the present invention may spread easily, may be easier to handle and may be removed satisfactorily by rinsing.
- The at least one nonionic polymer, which is for example chosen from water-soluble and water-dispersible nonionic polymers, comprises at least one hydrophobic block and at least one hydrophilic block. The at least one nonionic polymer can for example comprise at least two hydrophobic blocks.
- The at least one hydrophobic block can be chosen from fatty chains comprising from 6 to 30 carbon atoms, such as for example hydrocarbon-based chains chosen from alkyl, aryl(C1-C8)alkyl, (C1-C8)alkylaryl and alkenyl chains, divalent aliphatic groups such as for example C4-C30 alkylene, divalent cycloaliphatic groups such as, for example, methylene dicyclohexyl and isophorone, and divalent aromatic groups such as phenylene. The aryl groups can be chosen from phenyl, naphthyl and anthryl groups.
- The at least one hydrophilic block may be chosen from, for example, polyethylene oxides, polysaccharides, polyamides, such as polyacrylamide, and polyesters. In one embodiment of the invention, the at least one hydrophilic block may be chosen from polyethylene oxides comprising from 15 to 500 ethylene oxides.
- In general, the at least one hydrophobic block and the at least one hydrophilic block for example can be bonded by way of at least one linking group chosen from, for example, ester, ether, urea, amide and urethane linkers.
- The weight ratio of the at least one hydrophilic block to the at least one hydrophobic block of the polymer generally ranges for example from 10:1 to 1000:1.
- The at least one nonionic polymer according to the invention (uncharged “hydrophobic” polymer) can be chosen from:
- (1) celluloses modified with at least one group comprising at least one hydrophobic chain such as, for example:
- hydroxyethylcelluloses modified by at least one group comprising at least one fatty chain such as alkyl, arylalkyl, alkylaryl, and alkenyl groups and further such as alkyl, arylalkyl, alkylaryl, and alkenyl groups wherein said alkyl groups and said alkenyl groups comprise from 8 to 22 carbon atoms, such as the product NATROSOL PLUS GRADE 330 CS (C16 alkyls) sold by the company AQUALON, and the product BERMOCOLL EHM 100 sold by the company BEROL NOBEL, and
- hydroxyethylcelluloses modified by at least one polyalkylene glycol (C6-C20)alkylphenyl ether group, such as the product AMERCELL POLYMER HM-1500 (polyethylene glycol (15) ether of nonylphenol) sold by the company AMERCHOL;
- (2) hydroxypropylguars modified by at least one group comprising at least one C10-C30 fatty chain such as the product ESAFLOR HM 22 (C22 alkyl chain) sold by the company LAMBERTI, the products Miracare XC95-3 (C14 alkyl chain) and RE 205-1 (C20 alkyl chain) sold by the company Rhodia Chimie; and
- (3) polyether-polyurethanes comprising in their chain at least one hydrophilic block which is most often of a polyoxyethylenated nature and at least one hydrophobic block which may be a chain chosen from aliphatic chains, cycloaliphatic chains, and aromatic chains.
- The polyether-polyurethanes can, for example, comprise at least two lipophilic (i.e., hydrophobic) hydrocarbon chains comprising from 6 to 30 carbon atoms, separated by a hydrophilic block, it being possible for the hydrocarbon chains to be chosen from pendant chains and chains at the end of a hydrophilic block. One embodiment may comprise at least one pendant chain. In addition, the polymer may comprise a hydrocarbon chain at at least one end of a hydrophilic block.
- Representative polyether-polyurethanes useful in the present invention may be multiblocks, such as in triblock form. The hydrophobic blocks may be at each end of the chain (for example: triblock copolymer with hydrophilic central block) and optionally both at the ends and in the chain (multiblock copolymer for example). These same polymers may also be in the form of graft units or may be star-shaped.
- The nonionic polyether-polyurethanes may be triblock copolymers whose hydrophilic block is a polyoxyethylenated chain comprising from 50 to 1000 oxyethylenated groups. Certain nonionic polyether-polyurethanes comprise a urethane bond between the hydrophilic blocks.
- By extension, polyether-polyurethanes whose hydrophilic blocks are linked by other chemical bonds to the lipophilic blocks are also included among the nonionic polyether-polyurethanes.
- Representative nonionic polyether-polyurethanes can include, for example, polyether-polyurethanes comprising at least one polyoxyethylenated chain and at least one fatty chain, chosen from, for example, C8-C30 alkyl and alkenyl groups. For instance, such polyether-polyurethanes can include the products Dapral T 210 and Dapral T 212 sold by the company Akzo, and the products Aculyn 44 and Aculyn 46 from the company ROHM and HMS [ACULYN 46 is a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, stearyl alcohol and methylenebis(4-cyclohexylisocyanate) (SMDI), at 15% by weight in a maltodextrin (4%) and water (81%) matrix; ACULYN 44 is a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, decyl alcohol and methylenebis(4-cyclohexylisocyanate) (SMDI), at 35% by weight in a propylene glycol (39%) and water (26%) mixture].
- As examples of nonionic polyether-polyurethanes that can be used in the invention, mention may also be made of the polymer SER-AD FX1100 sold by the company Servo Delden, which comprises an oxyethylene unit and two C18 hydrocarbon-based groups at the end of the chain linked to the ethylene oxide via a polyurethane block. Representative nonionic polyether-polyurethanes include Rhéolate 205 comprising a urea function sold by the company RHEOX and Rhéolate 208, 204 and 212, as well as Acrysol RM 184 from the company Rohm & Haas.
- There may also be mentioned the product ELFACOS T210 comprising a C12-C14 alkyl chain and the product ELFACOS T212 comprising a C18 alkyl chain from AKZO.
- The product DW 1206B from RHOM & HMS comprising a C20 alkyl chain and with a urethane bond, sold at 20% dry matter content in water, may also be used.
- It is also possible to use solutions and dispersions of these polymers for example in water and for example in an aqueous-alcoholic medium. By way of example of such polymers, there may be mentioned SER-AD FX1010 and SER-AD 1035 sold by the company Hüls, Rhéolate 255, Rhéolate 278 and Rhéolate 244 sold by the company RHEOX. It is also possible to use the products DW 1206F and DW 1206J provided by the company ROHM & HMS.
- Representative polyether-polyurethanes that can be used according to the invention include polyether-polyurethanes described in the article by G. Fonnum, J. Bakke and Fk. Hansen—Colloid Polym. Sci 271, 380-389 (1993), the disclosure of which is incorporated by reference herein.
- Additionally, the at least one nonionic polymer according to the invention can be chosen from:
- (4) copolymers formed from vinylpyrrolidone and at least one hydrophobic monomer comprising at least one fatty chain such as for example:
- the products ANTARON V216 and GANEX V216 (vinylpyrrolidone/hexadecene copolymer) sold by the company I.S.P., and
- the products ANTARON V220 and GANEX V220 (vinylpyrrolidone/eicosene copolymer) sold by the company I.S.P.;
- (5) copolymers formed from at least one C1-C6 alkyl methacrylate and at least one amphiphilic monomer comprising at least one fatty chain and copolymers formed from at least one C1-C6 alkyl acrylate and at least one amphiphilic monomer comprising at least one fatty chain such as for example the oxyethylenated stearyl acrylate/methyl acrylate copolymer sold by the company GOLDSCHMIDT under the name ANTIL 208; and
- (6) copolymers formed from at least one hydrophilic methacrylate and at least one hydrophobic monomer comprising at least one fatty chain and copolymers formed from at least one hydrophilic acrylate and at least one hydrophobic monomer comprising at least one fatty chain, such as, for example, the polyethylene glycol methacrylate/lauryl methacrylate copolymer;
- In the compositions according to the invention, the at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block is generally present in an amount ranging for example from 0.01% to 10% by weight relative to the total weight of the composition, such as from 0.1% to 5% by weight relative to the total weight of the composition.
- The nanoemulsions according to the present invention can comprise at least one amphiphilic lipid chosen from for example nonionic amphiphilic lipids and anionic amphiphilic lipids.
- The nonionic amphiphilic lipids of the invention can be chosen from, for example:
- 1/-silicone surfactants,
- 2/-nonionic amphiphilic lipids that are fluid at a temperature of less than or equal to 45° C. chosen from esters formed from (i) at least one polyol chosen from polyethylene glycol comprising from 1 to 60 ethylene oxide units, sorbitan, glycerol comprising from 2 to 30 ethylene oxide units, and polyglycerols comprising from 2 to 15 glycerol units, and (ii) at least one fatty acid comprising at least one alkyl chain chosen from saturated and unsaturated, linear and branched C8-C22 alkyl chains,
- 3/-mixed esters derived from (i) at least one fatty acid, at least one carboxylic acid, and glycerol, and mixed esters derived from (ii) at least one fatty alcohol, at least one carboxylic acid, and glycerol, wherein said at least one carboxylic acid is chosen from α-hydroxy acids and succinic acid,
- 4/-fatty acid esters of sugars and fatty alcohol ethers of sugars,
- 5/-surfactants that are solid at a temperature of less than or equal to 45° C. chosen from fatty esters of glycerol, fatty esters of sorbitan, oxyethylenated fatty esters of sorbitan, ethoxylated fatty ethers, and ethoxylated fatty esters, and
- 6/-block copolymers of ethylene oxide (A) and of propylene oxide (B).
- 1/ The silicone surfactants that can be used according to the invention are silicone compounds comprising at least one oxyalkylene chain chosen from oxyethylene —OCH2CH2— and oxypropylene —OCH2CH2CH2—. Representative silicone surfactants that can be used according to the present invention include silicone surfactants disclosed in U.S. Pat. Nos. 5,364,633 and 5,411,744, the disclosures of which are incorporated by reference herein.
-
- in which:
- R1, R2 and R3, which may be identical or different, are each chosen from C1-C6 alkyl groups and groups of the formula —(CH2)x—(OCH2CH2)y—(OC2CH2CH2)z—OR4, provided that at least one of said groups R1, R2 and R3 is not a C1-C6 alkyl group;
- R4 is chosen from hydrogen, alkyl groups, and acyl groups;
- A is chosen from integers ranging from 0 to 200;
- B is chosen from integers ranging from 0 to 50; with the proviso that A and B are not simultaneously equal to zero;
- x is chosen from integers ranging from 1 to 6;
- y is chosen from integers ranging from 1 to 30;
- z is chosen from integers ranging from 0 to 5.
- In one embodiment of the invention, in the compound of formula (I) said alkyl groups are methyl groups, x is chosen from integers ranging from 2 to 6 and y is chosen from integers ranging from 4 to 30.
-
- in which A is chosen from integers ranging from 20 to 105, B is chosen from integers ranging from 2 to 10 and y is chosen from integers ranging from 10 to 20.
- Representative examples of silicone surfactants of formula (I) can include the compounds of formula (III):
- H—(OCH2CH2)y—(CH2)3—[(CH3)2SiO]A′—(CH2)3—(OCH2CH2)y—OH (III)
- in which A′ and y, which may be identical or different, are each chosen from integers ranging from 10 to 20.
- Silicone surfactants of the invention which may be used for example are the silicone surfactants sold by the company Dow Corning under the names DC 5329, DC 7439-146, DC 2-5695, and Q4-3667. The products DC 5329, DC 7439-146, and DC 2-5695 are silicone surfactants of formula (II) in which, respectively, A is 22, B is 2, and y is 12; A is 103, B is 10, and y is 12; A is 27, B is 3, and y is 12.
- The product Q4-3667 is a compound of formula (III) in which A is 15 and y is 13.
- 2/ The amphiphilic lipids that are fluid at a temperature of less than or equal to 45° C. are chosen from, for example:
- the isostearate of polyethylene glycol of molecular weight 400, sold under the name PEG 400 by the company Unichema;
- diglyceryl isostearate, sold by the company Solvay;
- glyceryl laurate comprising 2 glycerol units, sold by the company Solvay;
- sorbitan oleate, sold under the name SPAN 80 by the company ICI;
- sorbitan isostearate, sold under the name NIKKOL SI 10R by the company Nikko;
- α-butylglucoside cocoate and α-butylglucoside caprate, sold by the company Ulice.
- 3/ The mixed esters derived from (i) at least one fatty acid, at least one carboxylic acid, and glycerol, and the mixed esters derived from (ii) at least one fatty alcohol, at least one carboxylic acid, and glycerol, wherein said at least one carboxylic acid is chosen from α-hydroxy acids and succinic acid, which can be used as surfactants in the nanoemulsion according to the invention, may be chosen from, for example, (a) mixed esters derived from at least one fatty acid comprising at least one alkyl chain comprising from 8 to 22 carbon atoms, at least one α-hydroxy acid, and glycerol, (b) mixed esters derived from at least one fatty acid comprising at least one alkyl chain comprising from 8 to 22 carbon atoms, succinic acid, and glycerol, (c) mixed esters derived from at least one fatty alcohol comprising at least one alkyl chain comprising from 8 to 22 carbon atoms, at least one α-hydroxy acid, and glycerol, and (d) mixed esters derived from at least one fatty alcohol comprising at least one alkyl chain comprising from 8 to 22 carbon atoms, succinic acid, and glycerol. The α-hydroxy acid may be chosen, for example, from at least one acid chosen from citric acid, lactic acid, glycolic acid and malic acid.
- The alkyl chain of the fatty acids and fatty alcohols from which are derived the mixed esters which can be used in the nanoemulsion of the invention may be chosen from linear and branched, saturated and unsaturated alkyl chains. For example, the alkyl chain may be at least one chain chosen from stearate, isostearate, linoleate, oleate, behenate, arachidonate, palmitate, myristate, laurate, caprate, isostearyl, stearyl, linoleyl, oleyl, behenyl, myristyl, lauryl and capryl chains.
- As examples of mixed esters which can be used in the nanoemulsion of the invention, mention may be made of the mixed ester of glycerol and of the mixture of citric acid, lactic acid, linoleic acid and oleic acid (CTFA name: Glyceryl citrate/lactate/linoleate/oleate) sold by the company Huls under the name Imwitor 375; the mixed ester of succinic acid and of isostearyl alcohol with glycerol (CTFA name: Isostearyl diglyceryl succinate) sold by the company Huls under the name Imwitor 780 K; the mixed ester of citric acid and of stearic acid with glycerol (CTFA name: Glyceryl stearate citrate) sold by the company Huls under the name Imwitor 370; the mixed ester of lactic acid and of sfearic acid with glycerol (CTFA name: Glyceryl stearate lactate) sold by the company Danisco under the name Lactodan B30 or Rylo LA30.
- 4/ Fatty acid esters of sugars, which can be used as surfactants in the nanoemulsion according to the invention, can be chosen from fatty acid esters of sugars that are solid at a temperature of less than or equal to 45° C., such as esters derived from at least one C8-C22 fatty acid and at least one sugar chosen from sucrose, maltose, glucose, and fructose, and esters derived from at least one C14-C22 fatty acid and methylglucose.
- The C8-C22 and C14-C22 fatty acids forming the fatty unit of the esters which can be used in the nanoemulsion of the invention comprise an alkyl chain chosen from saturated and unsaturated linear alkyl chains comprising, respectively, from 8 to 22 and from 14 to 22 carbon atoms. The fatty unit of the esters may be formed for example from stearates, behenates, arachidonates, palmitates, myristates, laurates and caprates. In one embodiment of the invention, stearates for example may be used as the fatty unit.
- As examples of esters of at least one fatty acid and of sucrose, of fatty acids and of maltose, of fatty acids and of glucose, and of fatty acids and of fructose, mention may be made of sucrose monostearate, sucrose distearate and sucrose tristearate and mixtures thereof, such as the products sold by the company Croda under the name Crodesta F50, F70, F110 and F160 having, respectively, an HLB (hydrophilic lipophilic balance) of 5, 7, 11 and 16; and examples of esters of at least one fatty acids and of methylglucose which may be mentioned are methylglucose polyglyceryl-3 distearate, sold by the company Goldschmidt under the name Tego-care 450. Mention may also be made of glucose or maltose monoesters such as methyl o-hexadecanoyl-6-D-glucoside and o-hexadecanoyl-6-D-maltoside.
- The fatty alcohol ethers of sugars, which can be used as surfactants in the nanoemulsion according to the invention, are solid at a temperature of less than or equal to 45° C. and may be chosen for example from ethers of at least one C8-C22 fatty alcohol and of glucose, of at least one C8-C22 fatty alcohol and of maltose, of at least one C8-C22 fatty alcohol and of sucrose, and of at least one C8-C22 fatty alcohol and of fructose, and ethers of at least one C14-C22 fatty alcohol and of methylglucose. An example of such an ether would include, among other ethers, alkylpolyglucosides.
- The at least one C8-C22 and the at least one C14-C22 fatty alcohols forming the fatty unit of the ethers which may be used in the nanoemulsion of the invention can comprise at least one alkyl chain chosen from saturated and unsaturated, linear alkyl chains comprising, respectively, from 8 to 22 and from 14 to 22 carbon atoms. The fatty unit of the ethers may be chosen for example from decyl, cetyl, behenyl, arachidyl, stearyl, palmityl, myristyl, lauryl, capryl and hexadecanoyl units, and further such as cetearyl.
- As examples of fatty alcohol ethers of sugars, mention may be made of alkylpolyglucosides such as decylglucoside and laurylglucoside, which is sold, for example, by the company Henkel under the respective names Plantaren 2000 and Plantaren 1200, cetostearyl glucoside optionally as a mixture with cetostearyl alcohol, sold for example, under the name Montanov 68 by the company SEPPIC, under the name Tego-care CG90 by the company Goldschmidt and under the name Emulgade KE3302 by the company Henkel, as well as arachidyl glucoside, for example in the form of a mixture of arachidyl alcohol and behenyl alcohol and arachidyl glucoside, sold under the name Montanov 202 by the company SEPPIC.
- In one embodiment of the invention, the surfactant used can be for example at least one surfactant chosen from sucrose monostearate, sucrose distearate and sucrose tristearate. Additional surfactants that can be used include methylglucose polyglyceryl-3 distearate and alkylpolyglucosides.
- 5/ The fatty esters of glycerol which may be used as surfactants in the nanoemulsion according to the invention, which are solid at a temperature of less than or equal to 45° C., may be chosen for example from esters formed from at least one acid comprising a saturated linear alkyl chain comprising from 16 to 22 carbon atoms and from 1 to 10 glycerol units. One or more of these fatty esters of glycerol may be used in the nanoemulsion of the invention.
- These esters may be chosen for example from stearates, behenates, arachidates and paimitates. In one embodiment, the esters may be chosen for example from stearates and palmitates.
- As examples of surfactants which can be used in the nanoemulsion of the invention, mention may be made of decaglyceryl monostearate, distearate, tristearate and pentastearate (CTFA names: Polyglyceryl-10 stearate, Polyglyceryl-10 distearate, Polyglyceryl-10 tristearate, Polyglyceryl-10 pentastearate), such as the products sold under the respective names Nikkol Decaglyn 1-S, 2-S, 3-S and 5-S by the company Nikko, and diglyceryl monostearate (CTFA name: Polyglyceryl-2 stearate), such as the product sold by the company Nikko under the name Nikkol DGMS.
- The fatty esters of sorbitan which may be used as surfactants in the nanoemulsion according to the invention are solid at a temperature of less than or equal to 45° C. and are chosen from C16-C22 fatty acid esters of sorbitan and oxyethylenated C16-C22 fatty acid esters of sorbitan. They are formed from (i) at least one fatty acid comprising at least one saturated linear alkyl chain comprising, respectively, from 16 to 22 carbon atoms, and from sorbitol, as well as from (ii) at least one fatty acid comprising at least one saturated linear alkyl chain comprising, respectively, from 16 to 22 carbon atoms, and from ethoxylated sorbitol. The oxyethylenated esters generally comprise from 1 to 100 ethylene glycol units, such as from 2 to 40 ethylene oxide (EO) units.
- These esters may be chosen for example from stearates, behenates, and arachidates, palmitates. In one embodiment, the esters may be chosen for example from stearates and palmitates.
- As examples of surfactants which can be used in the nanoemulsion of the invention, mention may be made of sorbitan monostearate (CTFA name: sorbitan stearate), sold by the company ICI under the name Span 60, sorbitan rnonopalmitate (CTFA name: sorbitan palmitate), sold by the company ICI under the name Span 40, and sorbitan tristearate 20 EO (CTFA name: Polysorbate 65), sold by the company ICI under the name Tween 65.
- The ethoxylated fatty ethers that are solid at a temperature of less than or equal to 45° C., which may be used as surfactants in the nanoemulsion according to the invention, can be ethers formed from 1 to 100 ethylene oxide units and from at least one fatty alcohol chain comprising from 16 to 22 carbon atoms. The at least one fatty chain of the ethers may be chosen for example from behenyl, arachidyl, stearyl and cetyl units, and further for example from cetearyl. Examples of ethoxylated fatty ethers which may be mentioned are behenyl alcohol ethers comprising 5, 10, 20 and 30 ethylene oxide units (CTFA names: Beheneth-5, Beheneth-10, Beheneth-20, Beheneth-30), such as the products sold under the names Nikkol BB5, BB10, BB20 and BB30 by the company Nikko, and stearyl alcohol ether comprising 2 ethylene oxide units (CTFA name: steareth-2), such as the product sold under the name Brij 72 by the company ICI.
- The ethoxylated fatty esters that are solid at a temperature of less than or equal to 45° C., which may be used as surfactants in the nanoemulsion according to the invention, are esters formed from 1 to 100 ethylene oxide units and from at least one fatty acid chain comprising from 16 to 22 carbon atoms. The at least one fatty chain in the esters may be chosen for example from stearate, behenate, arachidate and palmitate units. Examples of ethoxylated fatty esters which may be mentioned are the ester of stearic acid comprising 40 ethylene oxide units, such as the product sold under the name Myrj 52 (CTFA name: PEG40 stearate) by the company ICI, as well as the ester of behenic acid comprising 8 ethylene oxide units (CTFA name: PEG-8 behenate), such as the product sold under the name Compritol HD5 ATO by the company Gattefosse.
- 6/ The block copolymers of ethylene oxide (A) and of propylene oxide (B), which may be used as a surfactant in the nanoemulsion according to the invention, may be chosen for example from at least one block copolymer of formula (I):
- HO(C2H4O)x(C3H6O)y(C2H4O)zH (I)
- in which x, y, and z, which may be identical or different, are each chosen from integers wherein x+z is an integer ranging from 2 to 100 and y is an integer ranging from 14 to 60, and optionally having an HLB value ranging from 2 to 16.
- The at least one block copolymer of formula (I) may be chosen for example from poloxamers, such as Poloxamer 231, and further such as the product sold by the company ICI under the name PLURONIC L81, which corresponds to the block copolymer of formula (i) wherein x=z=6, y=39 (HLB 2); Poloxamer 282, such as the product sold by the company ICI under the name PLURONIC L92, which corresponds to the block copolymer of formula (I) wherein x=z=10, y=47 (HLB 6); and Poloxamer 124, such as the product sold by the company ICI under the name PLURONIC L44, which corresponds to the block copolymer of formula (I) wherein x=z=11, y=21 (HLB 16).
- Representative nonionic amphiphilic lipids that can be used for example are chosen from:
- polyethylene glycol isostearate (8 mol of ethylene oxide),
- diglyceryl isostearate,
- polyglyceryl monolaurate, polyglyceryl monostearate, and polyglyceryl distearate which comprise 10 glycerol units,
- sorbitan oleate, and
- sorbitan isostearate.
- Representative anionic amphiphilic lipids of the invention, for example, can be chosen from:
- alkyl ether citrates,
- alkoxylated alkenyl succinates, alkoxylated glucose alkenyl succinates, and
- alkoxylated methylglucose alkenyl succinates.
- The alkyl ether citrates which may be used as surfactants in the nanoemulsion according to the invention may be chosen for example from at least one alkyl ether citrate chosen from monoesters, diesters, and triesters formed from citric acid and from at least one oxyethylenated fatty alcohol comprising at least one alkyl chain chosen from linear and branched, saturated and unsaturated alkyl chains comprising from 8 to 22 carbon atoms, and comprising from 3 to 9 ethoxylated groups. One embodiment of the invention may comprise at least one of the above-mentioned citrates in the nanoemulsion. Another embodiment may comprise at least two of the above-mentioned citrates in the nanoemulsion.
- These citrates may be chosen, for example, from the monoesters, diesters, and triesters of citric acid and of ethoxylated lauryl alcohol, comprising from 3 to 9 ethoxylated groups, which are, for example, sold by the company Witco under the name WITCONOL EC. For example, WITCONOL EC 2129, which is predominantly a dilaureth-9 citrate, and Witconol EC 3129, which is predominantly a trilaureth-9 citrate, can be chosen.
- When used, the alkyl ether citrates used as surfactants can for example be neutralized to a pH of about 7 with at least one base chosen from inorganic bases (such as sodium hydroxide, potassium hydroxide and ammonia) and organic bases (such as mono-ethanolamine, diethanolamine, triethanolamine, 1,3-aminomethylpropanediol, N-methylglucamine and basic amino acids like arginine and lysine).
- The alkenyl succinates which may be used as surfactants in the nanoemulsion of the invention can, for example, be chosen from alkoxylated alkenyl succinates, alkoxylated glucose alkenyl succinates, and alkoxylated methylgilucose alkenyl succinates that correspond to compounds of formulae (I) and (II):
- HOOC—CHR—CH2—COO—E (I)
- HOOC—CHR—CH2—COO—E—O—CO—CH2—CHR′—COO (II)
- in which:
- R arid R′, which may be identical or different, are each chosen from linear and branched alkenyl groups comprising from 6 to 22 carbon atoms,
- E is chosen from oxyethylene chains of formula (C2H4O)n in which n is chosen from integers ranging from 2 to 100, oxypropylene chains of formula (C3H6O)n in which n′ is chosen from integers ranging from 2 to 100, and random and block copolymers comprising chains chosen from oxyethylene chains of formula (C2H4O)n and oxypropylene chains of formula (C3H6O)n′ (such as oxyethylenated glucose copolymers, oxyethylenated methylglucose copolymers, oxypropylenated glucose copolymers, and oxypropylenated methylglucose copolymers) such that:
- the sum of n and n′ is an integer ranging from 2 to 100,
- the oxyethylenated and oxypropylenated glucose groups of said oxyethylenated and oxypropylenated glucose copolymers comprise on average from 4 to 100, respectively, oxyethylene or oxypropylene units distributed on all the hydroxyl functions, and
- the oxyethylenated and oxypropylenated methylglucose groups of said oxyethylenated and oxypropylenated methyl glucose copolymers comprise on average from 4 to 100 oxyethylene or oxypropylene units distributed on all the hydroxyl functions.
- In formulae (I) and (II), n and n′ are average values and are thus not necessarily integers. In one embodiment of the invention, n is chosen from integers ranging from 5 to 60, such as from 10 to 30.
- In one embodiment, R and R′, which may be identical or different, are each chosen from linear alkenyl groups comprising from 8 to 22 carbon atoms, such as from 14 to 22 carbon atoms. R and R′, which may be identical or different, each may be, for example, chosen from the hexadecenyl group comprising 16 carbon atoms and the octadecenyl group comprising 18 carbon atoms.
- The compounds of formulae (I) and (II) described above, in which E is chosen from oxyethylene chains, oxypropylene chains and copolymers comprising oxyethylene chains and oxypropylene chains, may be prepared in accordance with the description given in documents WO-A-94/00508, EP-A-107 199 and GB-A-2 131 820, which are incorporated herein by reference.
- The acid function —COOH in the surfactants of formulae (I) and (II) is generally in the nanoemulsion of the invention in a form which is neutralized with a neutralizing agent chosen, for example, from inorganic bases (such as sodium hydroxide, potassium hydroxide and ammonia) and organic bases (such as monoethanolamine, diethanolamine, triethanolamine, 1,3-aminomethylpropanediol, N-methylglucamine, and basic amino acids, such as arginine and lysine).
- Representative surfactants which can be used in the nanoemulsion of the invention, include at least one surfactant chosen from hexadecenyl succinate 18 EO (compound of formula (I) with R=hexadecenyl, E=(C2H4O)n, n=18), hexadecenyl succinate 45 EO (compound of formula (I) with R=hexadecenyl, E=(C2H4O)n, n=45), dihexadecenyl succinate 18 EO (compound of formula (II) with R=R′=hexadecenyl, E=(C2H4O)n, n=18), dihexadecenyl glucose succinate 10 EO (compound of formula (II) with R=R′=hexadecenyl, E=oxyethylenated glucose containing 10 oxyethylene groups), dihexadecenyl glucose succinate 20 EO (compound of formula (II) with R=R′=hexadecenyl, E=oxyethylenated glucose containing 20 oxyethylene groups), and dioctadecenyl methylglucose succinate 20 EO (compound of formula (II) with R=R′=octadecenyl, E=oxyethylenated methylglucose containing 20 oxyethylene groups).
- The at least one amphiphilic lipid chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids may be present in the aqueous phase (if more hydrophilic in nature) or in the oily phase (if more lipophilic in nature) of the nanoemulsion.
- The at least one amphiphilic lipid chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids may be present in the nanoemulsion of the invention in an amount ranging, for example, from 0.2% to 15% by weight relative to the total weight of the nanoemulsion, such as from 1% to 8% by weight relative to the total weight of the nanoemulsion.
- The weight ratio of the amount of oily phase with respect to the amount of the at least one amphiphilic lipid (surfactant) ranges for example from 1:1 to 10:1, such as from 1.2:1 to 10:1, further such as from 1.5:1 to 6:1, and furthermore such as from 2:1 to 5:1. The expression “amount of oily phase” herein means the total amount of constituents of this phase excluding the amount of the at least one amphiphilic lipid chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids.
- In one embodiment of the invention, the nanoemulsion of the invention may also comprise at least one additional ionic amphiphilic lipid other than the ionic amphiphilic lipids described above. Such additional ionic amphiphilic lipids may be added to possibly further improve the stability of the dispersion.
- The at least one additional ionic amphiphilic lipid which may be used in the nanoemulsions of the invention can, for example, be chosen from cationic amphiphilic lipids and anionic amphiphilic lipids other than the anionic amphiphilic lipids described above, such as from:
- alkaline salts of dicetyl phosphate and of dimyristyl phosphate;
- alkaline salts of cholesteryl sulfate;
- alkaline salts of cholesteryl phosphate;
- lipoamino acids and salts thereof, such as monosodium and disodium acylglutamates, for instance the disodium salt of N-stearoyl-L-glutamic acid, sold under the name ACYLGLUTAMATE HS21 by Ajinomoto;
- sodium salts of phosphatidic acid;
- phospholipids; and
-
- in which R, which may be identical or different in embodiments wherein more than one of said alkylsulfonic derivative is used, is chosen from C16-C22 alkyl groups, such as C16H33 and C18H37 groups, and M is chosen from alkali metals and alkaline-earth metals, such as sodium.
- Representative cationic amphiphilic lipids that can be used in the nanoemulsions of the invention can be chosen from, for example, quaternary ammonium salts, fatty amines, and salts thereof.
- The quaternary ammonium salts are, for example, chosen from:
-
- in which:
- R1, R2, R3, and R4, which may be identical or different, are each chosen from linear and branched aliphatic groups comprising from 1 to 30 carbon atoms, and aromatic groups, such as aryl and alkylaryl groups. The aliphatic groups can comprise hetero atoms, such as oxygen, nitrogen, and sulfur, and halogens. And the aliphatic groups can be chosen, for example, from alkyl, alkoxy, polyoxy(C2-C6)alkylene, alkylamide, (C2-C22)alkylamido(C2-C6)alkyl, (C12-C22)alkylacetate, and hydroxyalkyl groups comprising from 1 to 30 carbon atoms;
- X− is an anion chosen from halides, phosphates, acetates, lactates, (C2-C6)alkyl sulfates, alkyl sulfonates, and alkylaryl sulfonates;
-
- in which:
- R5 is chosen from alkenyl and alkyl groups comprising from 8 to 30 carbon atoms, for example groups derived from tallow fatty acid,
- R6 is chosen from a hydrogen atom, C1-C4 alkyl groups, and alkenyl and alkyl groups comprising from 8 to 30 carbon atoms,
- R7 is chosen from C1-C4 alkyl groups,
- R8 is chosen from a hydrogen atom and C1-C4 alkyl groups,
- X− is an anion chosen from halides, phosphates, acetates, lactates, alkyl sulfates, alkyl sulfonates, and alkylaryl sulfonates.
- In one embodiment, for example, R5 and R6 are chosen from alkenyl and alkyl groups comprising from 12 to 21 carbon atoms, for example, alkenyl and alkyl groups derived from tallow fatty acid, and wherein said R5 and R6 are chosen such that said quaternary ammonium salts of imidazolinium comprise at least one alkenyl group and at least one alkyl group, R7 is methyl, and R8 is hydrogen. Such products are, for example, (1) Quaternium-27 (International Cosmetic Ingredient Dictionary and Handbook, hereafter “CTFA”, 1997), i.e., “Rewoquat” W75, W75PG, and W90, and (2) Quaternium-83 5 (CTFA 1997), i.e., “Rewoquat” W75HPG, which are sold by the company Witco.
- Additionally, the quaternary ammonium salts are, for example, chosen from:
-
- in which:
- R9 is chosen from aliphatic groups comprising from 16 to 30 carbon atoms,
- R10, R11, R12, R13 and R14, which may be identical or different, are each chosen from a hydrogen atom and alkyl groups comprising from 1 to 4 carbon atoms, and
- X− is an anion chosen from halides, acetates, phosphates, nitrates and methyl sulfates. For example, such diquaternary ammonium salts can comprise propane tallow diammonium dichloride.
-
- in which:
- R15 is chosen from C1-C6 alkyl groups, C1-C6 hydroxyalkyl groups and C1-C6 dihydroxyalkyl groups;
- R16 is chosen from:
-
- wherein R19 is defined below,
- linear and branched, saturated and unsaturated, C1-C22 hydrocarbon-based groups, and
- a hydrogen atom;
- R18 is chosen from:
-
- wherein R21 is defined below,
- linear and branched, saturated and unsaturated, C1-C6 hydrocarbon-based groups, and
- a hydrogen atom;
- R17, R19 and R21, which may be identical or different, are each chosen from linear and branched, saturated and unsaturated, C1-C21, hydrocarbon-based groups;
- n, p and r, which may be identical or different, are each chosen from integers ranging from 2to 6;
- y is chosen from integers ranging from 1 to 10;
- x and z, which may be identical or different, are each chosen from integers ranging from 0 to 10;
- X− is chosen from simple and complex, organic and inorganic anions;
- provided that the sum x+y+z is from 1 to 15, and that when x is 0, then R16 is chosen from linear and branched, saturated and unsaturated, C1-C22 hydrocarbon-based groups, and that when z is 0, then R18 is chosen from linear and branched, saturated and unsaturated, C1-C6 hydrocarbon-based groups.
- In one embodiment, the R15 alkyl groups may be linear or branched and further, for example, linear.
- For example, R15 may be chosen from methyl, ethyl, hydroxyethyl and dihydroxypropyl groups and further for example from methyl and ethyl groups.
- The sum x+y+z may for example range from 1 to 10.
- When R16 is chosen from linear and branched, saturated and unsaturated, C1-C22 hydrocarbon-based groups, R16 may be long and comprise from 12 to 22 carbon atoms, or short and comprise from 1 to 3 carbon atoms.
- When R18 is chosen from linear and branched, saturated and unsaturated, C1-C6 hydrocarbon-based groups, R18 may for example comprise from 1 to 3 carbon atoms.
- R17, R19, and R21, which may be identical or different, can each, for example, be chosen from linear and branched, saturated and unsaturated C1-C2, hydrocarbon-based groups, and for example from linear and branched, saturated and unsaturated, C11-C21, alkyl and alkenyl groups.
- x and z, which may be identical or different, can for example each be chosen from 0 or 1.
- y for example may be equal to 1.
- n, p and r, which may be identical or different, can for example each be chosen from 2 and 3 and in one embodiment equal to 2.
- The anion for example can be chosen from halides (chloride, bromide, and iodide) and alkyl sulfates, such as methyl sulfate. However, methanesulfonate, phosphate, nitrate, tosylate, anions derived from organic acids, such as acetate and lactate, and any other anions compatible with the ammonium comprising an ester function, may be used.
- As a further example, the anion X− can be chosen from chloride and methyl sulfate.
- Further examples of ammonium salts of formula (VII) are those in which:
- R15 is chosen from methyl and ethyl groups,
- x and y are equal to 1;
- z is equal to 0 or 1;
- n, p and r are equal to 2;
- R16 is chosen from:
-
- wherein R19 is defined below,
- methyl, ethyl and C14-C22 hydrocarbon-based groups, and
- a hydrogen atom;
- R18 is chosen from:
-
- wherein R21 is defined below,
- a hydrogen atom;
- R17, R19 and R21, which may be identical or different, are each chosen from linear and branched, saturated and unsaturated, C13-C17 hydrocarbon-based groups, such as from linear and branched, saturated and unsaturated C13-C17 alkyl and alkenyl groups.
- The hydrocarbon-based groups can for example be linear.
- Representative compounds of formula (VII) are chosen from diacyloxyethyldimethylammonium, diacyloxyethylhydroxyethylmethylammonium, monoacyloxyethyldihydroxyethylmethylammonium, triacyloxyethylmethylammonium and monoacyloxyethylhydroxyethyldimethylammonium salts (for example chloride and methyl sulfate). The acyl groups can for example comprise from 14 to 18 carbon atoms and can for example be obtained from plant oils, such as palm oil and sunflower oil. When the compound comprises several acyl groups, these groups, which may be independently chosen, may independently be identical or different.
- These products are obtained, for example, by direct esterification of compounds chosen from triethanolamine, triisopropanolamine, alkyldiethanolamines and alkyldiisopropanolamines, which are optionally oxyalkylenated, with fatty acids or with fatty acid mixtures of plant or animal origin, and by transesterification of the methyl esters thereof. This esterification is followed by a quaternization using an alkylating agent such as alkyl halides (such as methyl and ethyl halides), dialkyl sulfates (for example dimethyl and diethyl sulfates), methyl methanesulfonate, methyl para-toluenesulfonate, glycol chlorohydrin and glycerol chlorohydrin.
- Such compounds are sold, for example, under the names Dehyquart by the company Henkel, Stepanquat by the company Stepan, Noxamium by the company Ceca and Rewoquat WE 18 by the company Rewo-Witco.
- One embodiment of the invention can comprise at least one quaternary ammonium monoester salt, at least one quaternary ammonium cliester salt, and at least one quaternary ammonium triester salt, wherein said quaternary ammonium diester salt is, for example, present in a majority by weight.
- Such an embodiment may comprise, for example, 15% to 30% by weight of acyloxyethyldihydroxyethylmethylammonium methyl sulfate, 45% to 60% by weight of diacyloxyethylhydroxyethylmethylammonium methyl sulfate, and 15% to 30% by weight of triacyloxyethylmethylammonium methyl sulfate, wherein said acyl groups comprise from 14 to 18 carbon atoms, and wherein said acyl groups are derived from palm oil that is optionally partially hydrogenated.
- It is also possible to use the ammonium salts comprising at least one ester function, described in U.S. Pat. Nos. 4,874,554 and 4,137,180, the disclosures of which are incorporated by reference herein.
- Representative quaternary ammonium salts of formula (IV) include tetraalkylammonium chlorides such as, for example, dialkyldimethylammonium chlorides and alkyltrimethylammonium chlorides, in which the alkyl group comprises from 12 to 22 carbon atoms, for example behenyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium chloride, and benzyldimethylstearylammonium chloride, and, stearamidopropyidimethyl(myristyl acetate)ammonium chloride sold under the name “Cepharyl 70” by the company Van Dyk.
- According to one embodiment of the invention, the quatemary ammonium salt can be behenyltrimethylammonium chloride.
- The at least one additional ionic amphiphilic lipid chosen from cationic amphiphilic lipids and anionic amphiphilic lipids is generally present in the nanoemulsion of the invention in an amount ranging for example from 0.01% to 10% by weight relative to the total weight of the nanoemulsion, such as for example from 0.2% to 5% by weight relative to the total weight of the nanoemulsion.
- The at least one oil that may be used in the nanoemulsion of the invention is, for example, chosen from:
- animal and plant oils formed by fatty acid esters of polyols, such as liquid triglycerides, for example sunflower oil, corn oil, soybean oil, avocado oil, jojoba oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, fish oils, glyceryl tricaprocaprylate, and plant and animal oils of formula R9COOR10 in which R9 is chosen from fatty acid residues comprising from 7 to 29 carbon atoms and R10 is chosen from linear and branched hydrocarbon-based chains comprising from 3 to 30 carbon atoms, such as alkyl and alkenyl, for example, purcellin oil and liquid jojoba wax;
- natural and synthetic essential oils such as, for example, eucalyptus oil, lavandin oil, lavender oil, vetiver oil, Litsea cubeba oil, lemon oil, sandalwood oil, rosemary oil, camomile oil, savory oil, nutmeg oil, cinnamon oil, hyssop oil, caraway oil, orange oil, geraniol oil, cade oil and bergamot oil;
- synthetic oils;
- mineral oils such as hexadecane and liquid paraffin;
- halogenated oils, such as fluorocarbons, for example, fluoroamines (including for example perfluorotributylamine), fluorohydrocarbons (including for example perfluorodecahydro-naphthalene), fluoroesters and fluoroethers;
- esters of at least one mineral acid and of at least one alcohol;
- liquid carboxylic acid esters; and
- volatile and non-volatile silicone oils.
- Volatile and non-volatile silicone oils can for example be used in the presence of at least one non-silicon oil (oil which does not contain silicium atom). When used, the total amount of such silicone oils is generally an amount ranging for example from 5% to 50% by weight relative to the total weight of oils.
- The synthetic oils can be chosen from for example polyolefins, such as poly-α-olefins and further such as:
- poly-α-olefins chosen from hydrogenated and non-hydrogenated polybutene poly-α-olefins, such as hydrogenated and non-hydrogenated polyisobutene poly-α-olefins.
- One embodiment may comprise at least one isobutylene oligomer with a molecular weight of less than 1000 and at least one polyisobutylene with a molecular weight of greater than 1000 such as for example ranging from 1000 to 15000.
- Representative carboxylic acid esters include monocarboxylic acid esters, dicarboxylic acid esters, tricarboxylic acid esters, and tetracarboxylic acid esters. The total number of carbons in the esters is generally equal to 10 or more, such as less than 100 and further such as less than 80.
- The monocarboxylic acid esters can be chosen from saturated and unsaturated, linear and branched C1-C26 aliphatic acid monoesters derived from alcohols chosen from saturated and unsaturated, linear and branched C1-C26 aliphatic alcohols, wherein the total number of carbons in the esters is generally equal to 10 or more.
- It is also possible to use esters derived from C4-C22 dicarboxylic acids and C1-C22 alcohols, esters derived from C4-C22 tricarboxylic acids and C1-C22 alcohols, esters derived from acids chosen from mono-, di-, and tricarboxylic acids and alcohols chosen from C2-C26 di-, tri-, tetra- and pentahydroxy alcohols.
- Representative esters mentioned above which can be used include ethyl palmitate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-octyidecyl palmitate, alkyl myristates such as isopropyl myristate, butyl myristate, cetyl myristate and 2-octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanate, and cetyl octanoate.
- The at least one oil of the nanoemulsions in accordance with the invention is generally present in an amount ranging for example from 2% to 40% by weight relative to the total weight of the nanoemulsion, such as for example from 4% to 30% by weight relative to the total weight of the nanoemulsion, and further such as for example from 8% to 20% by weight relative to the total weight of the nanoemulsion.
- According to one embodiment, such as for example an embodiment of the invention that is used for hair compositions, the compositions according to the invention can also comprise at least one aminosilicone.
- Hereinabove and hereinbelow, the terms at least one “silicone” and “polysiloxane” are synonymous and are understood to include linear and cyclic, branched and crosslinked organosilicon polymers and organosilicon oligomers of variable molecular weight, obtained by polymerization and/or polycondensation of suitably functionalized silanes, and which comprise repeating units in which the silicon atoms are connected together by oxygen atoms (siloxane bond ≡—Si—O—Si≡) and are optionally substituted with at least one hydrocarbon-based group, which is bonded by way of a carbon atom of said hydrocarbon-based group to said silicon atoms. The most common hydrocarbon-based groups are alkyl groups, such as C1-C10 alkyl groups and further such as methyl, fluoroalkyl groups, aryl groups, such as phenyl, and alkenyl groups such as vinyl; other groups that can be bonded, either directly or by way of a hydrocarbon-based linking group, to the siloxane chain can be chosen from a hydrogen atom, halogens, such as chlorine, bromine and fluorine, thiols, alkoxy groups, polyoxyalkylene groups, such as polyoxyethylene and polyoxypropylene, polyether groups, hydroxyl, hydroxyalkyl groups, amide groups, acyloxy groups, acyloxyalkyl groups, amphoteric groups, betaine groups, anionic groups such as carboxylates, thioglycolates, sulfosuccinates, thiosulfates, phosphates and sulfates, this list obviously being in no way limiting (so-called “organomodified” silicones).
- According to the invention, the term at least one “aminosilicone” means any silicone comprising at least one amine chosen from primary, secondary, and tertiary amines or at least one quaternary ammonium group. Mention may thus be made of:
-
- in which x′ and y′ are integers chosen such that generally the weight-average molecular weight of said aminosilicone ranges from 5000 to 500000 approximately;
- (b) said at least one aminosilicone corresponding to formula (V):
- R′aG3-a—Si(OSiG2)n—(OSiGbR′2-b)m—O—SiG3-aR′a (V)
- in which:
- G is chosen from a hydrogen atom, a phenyl group, OH group, and C1-C8 alkyl groups, for example methyl,
- a is an integer ranging from 0 to 3, and in one embodiment a is 0,
- b is chosen from 0 and 1, and in one embodiment b is 1,
- m and n are numbers such that the sum (n+m) can range for example from 1 to 2000, such as for example from 50 to 150, wherein n can be for example chosen from numbers ranging from 0 to 1999, such as for example from 49 to 149, and
- wherein m can be chosen from numbers ranging for example from 1 to 2000, such as for example from 1 to 10;
- R′ is a monovalent group of formula —CqH2qL in which q is a number from 2 to 8 and
- L is an optionally quaternized amine group chosen from the groups:
- —NR″—CH2—CH2—N′(R″)2,
- —N(R″)2,
- —N+(R″)3A−,
- —N+H(R″)2A−,
- —N+H2(R″)A−, and
- —N(R″)—CH2—CH2—N+R″H2A−,
- in which R″ can be chosen from a hydrogen atom, phenyl groups, benzyl groups, and saturated monovalent hydrocarbon-based groups, such as for example an alkyl group comprising from 1 to 20 carbon atoms, and A− is chosen from halide ions such as, for example, fluoride, chloride, bromide and iodide.
-
- in which:
- m and n are numbers such that the sum (n+m) can range for example from 1 to 2000, such as for example from 50 to 150, wherein n can be for example chosen from numbers ranging from 0 to 1999, such as for example from 49 to 149, and
- wherein m can be chosen from numbers ranging for example from 1 to 2000, such as for example from 1 to 10.
- Such polymers are described, for example in patent application EP-A-95238, the disclosure of which is incorporated herein by reference.
- Additional said at least one aminosilicone of the invention include:
-
- in which:
- R5 is chosen from monovalent hydrocarbon-based groups comprising from 1 to 18 carbon atoms, such as C1-C18 alkyl groups and C2-C18 alkenyl groups, for example methyl;
- R6 is chosen from divalent hydrocarbon-based groups, such as divalent C1-C18 alkylene groups and divalent C1-C18 alkylenoxy groups, for example C1-C8 alkylenoxy groups, wherein said R6 is bonded to the Si by way of an SiC bond;
- Q− is an anion that can be for example chosen from halide ions, such as chloride, and organic acid salts (such as acetate);
- r is an average statistical value ranging from 2 to 20, such as from 2 to 8;
- s is an average statistical value ranging from 20 to 200, such as from 20 to 50.
- Such aminosilicones are described more particularly in U.S. Pat. No. 4,185,087, the disclosure of which is incorporated by reference herein.
- A silicone which falls within this class is the silicone sold by the company Union Carbide under the name “Ucar Silicone ALE 56”.
- Further examples of said at least one aminosilicone include:
-
- in which:
- groups R7, which may be identical or different, are each chosen from monovalent hydrocarbon-based groups comprising from 1 to 18 carbon atoms, such as C1-C18 alkyl groups, for example methyl, C2-C18 alkenyl groups, and rings comprising 5 or 6 carbon atoms;
- R6 is chosen from divalent hydrocarbon-baseci groups, such as divalent C1-C18 alkylene groups and divalent C1-C18alkylenoxy, for example C1-C8, group connected to the Si by an SiC bond;
- R8, which may be identical or different, represent a hydrogen atom, a monovalent hydrocarbon-based group comprising from 1 to 18 carbon atoms, and in particular a C1-C18 alkyl group, a C2-C18 alkenyl group or a group —R6—NHCOR7;
- X− is an anion such as a halide ion, in particular chloride, or an organic acid salt (acetate, etc.);
- r represents an average statistical value from 2 to 200, such as for example from 5 to 100.
- Such silicones are described, for example, in application EP-A-0 530 974, the disclosure of which is incorporated by reference herein.
- Silicones falling within this class are the silicones sold by the company Goldschmidt under the names Abil Quat 3270, Abil Quat 3272 and Abil Quat 3474.
- According to the invention, said at least one aminosilicone can be present in at least one form chosen from the form of an oil, the form of a solution chosen from aqueous, alcoholic and aqueous-alcoholic solutions, the form of a dispersion, and the form of an emulsion.
- In one embodiment, the aminosilicones can be present in the form of an emulsion, such as emulsions chosen from microemulsions and nanoemulsions.
- The product sold under the name “Cationic Emulsion DC 929” by Dow Corning, which comprises, besides amodimethicone, a cationic surfactant derived from tallow fatty acids, referred to as Tallotrimonium (CTFA), in combination with a nonionic surfactant, known under the name “Nonoxynol 10”, can be used for example.
- The product sold under the name “Cationic Emulsion DC 939” by Dow Corning, which comprises, besides amodimethicone, a cationic surfactant, trimethylcetylammonium chloride, in combination with a nonionic surfactant, trideceth-12, can also be used for example.
- Another commercial product which can be used according to the invention is the product sold under the name “Dow Corning Q2 7224” by Dow Corning, comprising, in combination, the trimethylsilylamodimethicone of formula (IV), a nonionic surfactant of formula: C8H17—C6H4—(OCH2CH2)n—OH in which n=40, also known as octoxynol-40, another nonionic surfactant of formula: C12H25—(OCH2—CH2)n—OH in which n=6, also known as isolaureth-6, and glycol.
- The at least one aminosilicone is generally present in an amount ranging for example from 0.05% to 10% by weight relative to the total weight of the nanoemulsion, such as for example from 0.1% to 5% by weight relative to the total weight of the nanoemulsion, and further such as from 0.3% to 3% by weight relative to the total weight of the nanoemulsion.
- The nanoemulsions in accordance with the present invention may comprise at least one solvent, for example, if desired, to improve the transparency of the formulation.
- The at least one solvent can be for example chosen from:
- C1-C8 alcohols such as ethanol;
- glycols such as glycerol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, polyethylene glycols comprising from 4 to 16, for example, from 8 to 12 ethylene oxide units.
- The at least one solvent such as those mentioned above are generally present in the nanoemulsions of the invention in an amount ranging for example from 0.01% to 30% by weight relative to the total weight of the nanoemulsion.
- In addition, the use of the alcohols as defined above, in an amount of at least 5% by weight relative to the total weight of the nanoemulsion, such as for example at least 15% by weight relative to the total weight of the nanoemulsion, may make it possible for one skilled in the art to obtain nanoemulsions without a preserving agent.
- The nanoemulsions of the invention can additionally comprise at least one active agent chosen from water-soluble, water-dispersible, and liposoluble cosmetic active agents and water-soluble, water-dispersible, and liposoluble dermopharmaceutical active agents. The liposoluble active agents are present in the oily globules of the nanoemulsion, while the water-soluble and water-dispersible active agents are present in the aqueous phase of the nanoemulsion. Non-limiting examples of said at least one active agent include vitamins and derivatives thereof, such as vitamin E, vitamin E acetate, vitamin C and its esters, B vitamins, vitamin A alcohol and vitamin A retinol, vitamin A acid and vitamin A retinoic acid and its derivatives, provitamins such as panthenol, vitamin A palmitate, niacinamide, ergocalciferol, antioxidants, essential oils, wetting agents, silicone and non-silicone sunscreens, preserving agents, sequestering agents, softeners, dyes, viscosity modifiers, foam modifiers, foam stabilizers, nacreous agents, pigments, moisturizers, antidandruff agents, antiseborrhoeic agents, proteins, ceramides, pseudoceramides, fatty acids comprising linear and branched C16-C40 chains, such as 18-methyl eicosanoic acid, plasticizers, hydroxy acids, electrolytes, polymers, such as cationic polymers, and fragrances.
- The oil globules in the nanoemulsions of the invention can for example have an average size ranging from 20 nm to 150 nm, such as for example from 30 nm to 100 nm and further such as for example from 40 nm to 80 nm.
- The nanoemulsions according to the invention generally have a transparent to blueish appearance. Their transparency is measured by a coefficient of transmittance at 600 nm ranging for example from 10% to 90%, or alternatively by a turbidity ranging for example from 60 NTU to 600 NTU such as for example from 70 NTU to 400 NTU, the turbidity being measured using a Hach Model 2100 P portable turbidimeter.
- The nanoemulsions of the invention may be obtained by a process comprising:
- (1) combining the aqueous phase and the oily phase by mixing with vigorous stirring at a temperature of less than 45° C.,
- (2) homogenizing said combination at a pressure of greater than 5×107 Pa such as ranging for example from 6×107 to 18×107 Pa.
- Such a process makes it possible to produce, at room temperature, nanoemulsions that tend to be compatible with heat-sensitive active compounds and that can comprise large amounts of oils, such as fragrances comprising fatty substances, whereby the possibility of denaturing such oils tends to be reduced.
- Another subject of the invention is a composition for topical use such as a composition chosen from cosmetic compositions and dermopharmaceutical compositions, wherein said composition for topical use comprises a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
- The compositions in accordance with the invention may be used for at least one use chosen from washing keratin materials, cleaning keratin materials, and removing make-up from keratin materials such as the hair, the skin, the eyelashes, the eyebrows, the nails and mucous membranes.
- The compositions of the invention can for example be in forms chosen from shampoos, rinse-out conditioners, leave-in conditioners, permanent-waving compositions, relaxing compositions, dyeing compositions, bleaching compositions, compositions to be applied before a procedure chosen from dyeing, bleaching, permanent-waving and relaxing the hair, compositions to be applied after a procedure chosen from dyeing, bleaching, permanent-waving and relaxing the hair, and compositions to be applied between the two steps of a procedure chosen from permanent-waving and relaxing the hair.
- The compositions may also be in at least one form chosen from hairsetting lotions, blow-drying lotions, fixing compositions (lacquers), and styling compositions such as, for example, gels and mousses.
- The compositions can be packaged in various forms chosen from vaporizers, pump-dispenser bottles and aerosol containers in order to ensure application of the composition in vaporized form or in the form of a mousse. Such packaging forms are indicated, for example, when it is desired to obtain a spray, a lacquer or a mousse for fixing or treating the hair.
- When the composition according to the invention is packaged in aerosol form in order to obtain an aerosol lacquer or mousse, it comprises at least one propellant which may be chosen from volatile hydrocarbons such as n-butane, propane, isobutane and pentane, chlorohydrocarbons, fluorohydrocarbons, carbon dioxide, nitrous oxide, dimethyl ether, nitrogen and compressed air.
- The compositions in accordance with the invention may be used to care for a keratin material chosen from for example hair, body skin, facial skin, eyelashes, eyebrows, nails, and mucous membranes.
- The compositions in accordance with the invention may be used to make up a keratin material chosen from for example hair, body skin, facial skin, eyelashes, eyebrows, nails, and mucous membranes.
- Another subject of the invention is a cosmetic product base, such as for example lotions, sera, milks, creams and eaux de toilette for caring, making-up, or removing make-up from a keratin material, such as for example body skin, facial skin, the scalp, the hair, the nails, the eyelashes, the eyebrows, and mucous membranes, and further such as for example the lips, wherein said cosmetic product base comprises at least one nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
- Another subject of the invention relates to a non-therapeutic care process for a keratin material comprising applying a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block to said keratin material chosen from for example the skin, the hair, the eyelashes, the eyebrows, the nails, mucous membranes and the scalp.
- Concrete examples illustrating the invention are indicated below without however exhibiting a limiting character.
- Other than in the operating examples, or where otherwise indicated, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
- Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
- The following procedure was used:
- in a first phase A, the nonionic and cationic amphiphilic lipids were homogenized with the oil and the lipophilic (liposoluble) active agents and adjuvants at a temperature of about 80° C. and the mixture was allowed to cool to 50° C., with stirring using a doctor blade;
- the fragrance, the preserving agent and the cyclomethicone were then added, and cooling was continued down to 30° C.;
- in a second phase B, 65% of the water and the water-soluble and water-dispersible active agents and adjuvants were mixed in at a temperature of 20 to 30° C.;
- a third phase C was prepared containing 35% of the water and the nonionic polymer. This phase was melted at 80° C. and was then cooled to 60° C.;
- phases A and B were then mixed together using a turbomixer homogenizer and the mixture was then homogenized using a high-pressure homogenizer such as a Soavi-Niro machine at a pressure of 1200 bar, in 4 homogenization runs, while keeping the temperature of the product below about 35° C.
- Phase C was added with stirring, at room temperature.
- A conditioner to be rinsed off comprising the composition below was prepared:
Phase A: PEG-400 isostearate as sold by Unichema 2 g Behenyltrimethylammonium chloride 2 g (1.6 g AM) containing 80% AM (Genamin DDMP from Goldschmidt) Avocado oil 5.25 g Jojoba oil 5.25 g Fragrance qs Preserving agent qs Cyclopentadimethylsiloxane 3.5 g (DC245 from Dow Corning) Phase B: Trimethylsilylamodimethicone micro- 6 g (1.2 g AM) emulsion containing 20% AM, sold under the name SME 253 by General Electric Dipropylene glycol 10 g Sorbitan monolaurate oxyethylenated 0.5 g with 20 mol of ethylene oxide (Tween 20 from ICI) Demineralized water 38 g Glycerol 5 g Phase C: Polycondensate comprising at least one 5 g (0.75 g AM) polyethylene glycol containing 150 or 180 mol of ethylene oxide, stearyl alcohol and methylenebis(4-cyclohexyl isocyanate) (SMDI) at a concentration of 15% by weight in a matrix of maltodextrin (4%) and water (81%) (Aculyn 46 from Rohm & Haas) Water 21 g - A nanoemulsion in which the size of the oil globules is about 63 nm was obtained. This composition was stable on storage for 2 months at room temperature and at 45° C.
- The composition had a turbidity of 318 NTU and a viscosity of 1300 mPa.s (cP).
- The turbidity was measured using a Hach Model 2100 P turbidimeter at 25° C., in NTU units (Nephelometric turbidity units). (The machine was calibrated with formazine).
- The viscosity was measured using a Rheomat 108 rheometer with a shear rate of 200 s−1 at 25° C. (spindle 4).
- The hair treated with this composition was easy to disentangle, soft and shiny.
- If the Aculyn 46 is replaced with 1% AM by weight of Carbopol Ultrez, a composition which is not thickened, not transparent (turbidity>1000 NTU) and not stable on storage is obtained.
- The composition below was prepared:
Phase A: PEG-400 isostearate 4.5% Disodium acylglutamate 0.5% Isopropyl myristate 5% Isocetyl stearate 10% Phase B: Dipropylene glycol 10% Glycerol 5% Distilled water 45% Phase C: SER-AD FX 1100 (Servo Delden) 0.5% Distilled water 19.5% - For this example, total stability of the turbidity and good stability of the viscosity over a period of 2 months were noted.
- The compositions below were prepared:
3 4 5 6 Phase A: PEG-400 isostearate 4.5% 4.5% 4.5% 4.5% Disodium acylglutamate 0.5% 0.5% 0.5% 0.5% Isopropyl myristate 5% 5% 5% 5% Isocetyl stearate 10% 10% 10% 10% Phase B: Dipropylene glycol 10% 10% 10% 10% Glycerol 5% 5% 5% 5% Distilled water 45% 45% 45% 45% Phase C: Rheolate 205 0.5% — — — Esaflor HM 22 — 0.1% 0.75% — Natrosol Grade Plus 330 — — — 0.5% Distilled water qs 100% 100% 100% 100% Ex. 3 Ex. 4 Ex. 5 Ex. 6 Turbidity 177 NTU 201 NTU 377 NTU 362 NTU Viscosity 9 0.061 0.18 0.15 in Pa · s (spindle 4) (spindle 3) (spindle 3) (spindle 3)
Claims (85)
1. An oil-in-water nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
2. A nanoemulsion according to claim 1 , wherein said at least one oil and said at least one amphiphilic lipid are present in amounts wherein the weight ratio of the amount of said at least one oil to the amount of said at least one amphiphilic lipid ranges from 1:1 to 10:1.
3. A nanoemulsion according to claim 2 , wherein said weight ratio ranges from 1.2:1 to 6:1.
4. A nanoemulsion according to claim 1 , wherein said oil globules have an average size ranging from 30 nm to 100 nm.
5. A nanoemulsion according to claim 1 , wherein said at least one nonionic polymer is chosen from water-soluble nonionic polymers and water-dispersible nonionic polymers.
6. A nanoemulsion according to claim 1 , wherein said at least one nonionic polymer comprises at least two hydrophobic blocks.
7. A nanoemulsion according to claim 1 , wherein said at least one hydrophobic block is chosen from fatty chains comprising from 6 to 30 carbon atoms, divalent aliphatic groups, divalent cycloaliphatic groups and divalent aromatic groups.
8. A nanoemulsion according to claim 7 , wherein said fatty chains comprising from 6 to 30 carbon atoms are chosen from alkyl chains, arylalkyl chains, alkylaryl chains and alkenyl chains.
9. A nanoemulsion according to claim 1 , wherein said at least one hydrophilic block is chosen from polyethylene oxides, polysaccharides, polyamides, and polyesters.
10. A nanoemulsion according to claim 9 , wherein said polyamides are chosen from polyacrylamides.
11. A nanoemulsion according to claim 1 , wherein said at least one hydrophobic block and said at least one hydrophilic block are bonded with at least one linking group chosen from ester, ether, urea, amide and urethane linkers.
12. A nanoemulsion according to claim 1 , wherein said at least one hydrophilic block and said at least one hydrophobic block are present in amounts wherein the weight ratio of the amount of said at least one hydrophilic block to the amount of said at least one hydrophobic block ranges from 10:1 to 1000:1.
13. A nanoemulsion according to claim 1 , wherein said at least one nonionic polymer is chosen from:
(1) celluloses modified with at least one group comprising at least one hydrophobic chain;
(2) hydroxypropylguars modified by at least one group comprising at least one C10-C30 fatty chain;
(3) polyether-polyurethanes comprising in their chain at least one polyoxyethylenated hydrophilic block and at least one hydrophobic block chosen from aliphatic chains, cycloaliphatic chains, and aromatic chains;
(4) copolymers formed from vinylpyrrolidone and at least one hydrophobic monomer comprising at least one fatty chain;
(5) copolymers formed from at least one C1-C6 alkyl methacrylate and at least one amphiphilic monomer comprising at least one fatty chain and copolymers formed from at least one C1-C6 alkyl acrylate and at least one amphiphilic monomer comprising at least one fatty chain; and
(6) copolymers formed from at least one hydrophilic methacrylate and at least one hydrophobic monomer comprising at least one fatty chain and copolymers formed from at least one hydrophilic acrylate and at least one hydrophobic monomer comprising at least one fatty chain.
14. A nanoemulsion according to claim 13 , wherein said polyether-polyurethanes comprise at least two lipophilic hydrocarbon chains comprising from 6 to 30 carbon atoms, separated by a hydrophilic block, wherein said hydrocarbon chains are chosen from pendant chains and chains at the end of a hydrophilic block.
15. A nanoemulsion according to claim 13 , wherein said polyether-polyurethanes are multiblock polymers.
16. A nanoemulsion according to claim 13 , wherein said polyether-polyurethanes are triblock polymers.
17. A nanoemulsion according to claim 1 , wherein said at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block is present in an amount ranging from 0.01% to 10% by weight relative to the total weight of the composition.
18. A nanoemulsion according to claim 17 , wherein said at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block is present in an amount ranging from 0.1% to 5% by weight relative to the total weight of the composition.
19. A nanoemulsion according to claim 1 , wherein said at least one amphiphilic lipid is chosen from nonionic amphiphilic lipids and anionic amphiphilic lipids.
20. A nanoemulsion according to claim 19 , wherein said nonionic amphiphilic lipids are chosen from:
1/-silicone surfactants,
2/-nonionic amphiphilic lipids that are fluid at a temperature of less than or equal to 45° C. chosen from esters formed from (i) at least one polyol chosen from polyethylene glycol comprising from 1 to 60 ethylene oxide units, sorbitan, glycerol comprising from 2 to 30 ethylene oxide units, and polyglycerols comprising from 2 to 15 glycerol units, and (ii) at least one fatty acid comprising at least one alkyl chain chosen from saturated and unsaturated, linear and branched C8-C22 alkyl chains,
3/-mixed esters derived from (i) at least one fatty acid, at least one carboxylic acid, and glycerol, and mixed esters derived from (ii) at least one fatty alcohol, at least one carboxylic acid, and glycerol, wherein said at least one carboxylic acid is chosen from α-hydroxy acids and succinic acid,
4/-fatty acid esters of sugars and fatty alcohol ethers of sugars,
5/-surfactants that are solid at a temperature of less than or equal to 45° C. chosen from fatty esters of glycerol, fatty esters of sorbitan, oxyethylenated fatty esters of sorbitan, ethoxylated fatty ethers, and ethoxylated fatty esters, and
6/-block copolymers of ethylene oxide (A) and of propylene oxide (B).
21. A nanoemulsion according to claim 19 , wherein said nonionic amphiphilic lipids are chosen from:
polyethylene glycol isostearate (8 mol of ethylene oxide),
diglyceryl isostearate,
polyglyceryl monolaurate, polyglyceryl monostearate, and polyglyceryl distearate which comprise 10 glycerol units,
sorbitan oleate, and
sorbitan isostearate.
22. A nanoemulsion according to claim 19 , wherein said anionic amphiphilic lipids are chosen from:
alkyl ether citrates,
alkoxylated alkenyl succinates,
alkoxylated glucose alkenyl succinates, and
alkoxylated methylglucose alkenyl succinates.
23. A nanoemulsion according to claim 1 , wherein said at least one amphiphilic lipid is present in an amount ranging from 0.2% to 15% by weight relative to the total weight of the nanoemulsion.
24. A nanoemulsion according to claim 23 , wherein said at least one amphiphilic lipid is present in an amount ranging from 1% to 8% by weight relative to the total weight of the nanoemulsion.
25. A nanoemulsion according to claim 1 further comprising at least one ionic amphiphilic lipid chosen from cationic amphiphilic lipids and anionic amphiphilic lipids chosen from:
alkaline salts of dicetyl phosphate and of dimyristyl phosphate;
alkaline salts of cholesteryl sulfate;
alkaline salts of cholesteryl phosphate;
lipoamino acids and salts thereof;
sodium salts of phosphatidic acid;
phospholipids; and
alkylsulfonic derivatives of formula:
in which R, which may be identical or different in embodiments wherein more than one of said alkylsulfonic derivative is used, is chosen from C16-C22 alkyl groups, and M is chosen from alkali metals and alkaline-earth metals.
26. A nanoemulsion according to claim 25 , wherein said lipoamino acids and salts thereof are chosen from monosodium and disodium acylglutamates.
27. A nanoemulsion according to claim 26 , wherein said lipoamino acids and salts thereof are chosen from the disodium salt of N-stearoyl-L-glutamic acid.
28. A nanoemulsion according to claim 25 , wherein said R is chosen from C16H33 and C18H37 groups.
29. A nanoemulsion according to claim 25 , wherein said M is sodium.
30. A nanoemulsion according to claim 25 , wherein said cationic amphiphilic lipids are chosen from:
A) quaternary ammonium salts of formula (IV):
in which:
R1, R2, R3, and R4, which may be identical or different, are each chosen from:
linear and branched aliphatic groups comprising from 1 to 30 carbon atoms and optionally comprising atoms chosen from hetero and halogen atoms, and
aromatic groups, and
X− is an anion chosen from halides, phosphates, acetates, lactates, (C2-C6)alkyl sulfates, alkyl sulfonates, and alkylaryl sulfonates;
B) quaternary ammonium salts of imidazolinium of formula (V):
in which:
R5 is chosen from alkenyl and alkyl groups comprising from 8 to 30 carbon atoms,
R6 is chosen from a hydrogen atom, C1-C4 alkyl groups, and alkenyl and alkyl groups comprising from 8 to 30 carbon atoms,
R7 is chosen from C1-C4 alkyl groups,
R8 is chosen from a hydrogen atom and C1-C4 alkyl groups, and
X− is an anion chosen from halides, phosphates, acetates, lactates, alkyl sulfates, alkyl sulfonates, and alkylaryl sulfonates;
C) diquaternary ammonium salts of formula (VI):
in which:
R9 is chosen from aliphatic groups comprising from 16 to 30 carbon atoms,
R10, R11, R12, R13 and R14, which may be identical or different, are each chosen from a hydrogen atom and alkyl groups comprising from 1 to 4 carbon atoms, and
X− is an anion chosen from halides, acetates, phosphates, nitrates and methyl sulfates; and
D) quaternary ammonium salts comprising at least one ester function chosen from said quaternary ammonium salts of formula (VIl):
in which:
R15 is chosen from C1-C6 alkyl groups, C1-C6 hydroxyalkyl groups and C1-C6 dihydroxyalkyl groups;
R16 is chosen from:
acyl groups of the following formula:
wherein R19 is defined below,
linear and branched, saturated and unsaturated, C1-C22 hydrocarbon-based groups, and
a hydrogen atom;
R18 is chosen from:
acyl groups of the following formula:
wherein R2, is defined below,
linear and branched, saturated and unsaturated, C1-C6 hydrocarbon-based groups, and
a hydrogen atom;
R17, R19, and R21, which may be identical or different, are each chosen from linear and branched, saturated and unsaturated, C7-C21, hydrocarbon-based groups;
n, p and r, which may be identical or different, are each chosen from integers ranging from 2 to 6;
y is chosen from integers ranging from 1 to 10;
x and z, which may be identical or different, are each chosen from integers ranging from 0 to 10;
X− is chosen from simple and complex, organic and inorganic anions; and
provided that the sum x+y30 z is from 1 to 15, and that when x is 0, then R16 is chosen from linear and branched, saturated and unsaturated, C1-C22 hydrocarbon-based groups, and that when z is 0, then R18 is chosen from linear and branched, saturated and unsaturated, C1-C6 hydrocarbon-based groups.
31. A nanoemulsion according to claim 30 , wherein said aromatic groups are chosen from aryl and alkylaryl groups.
32. A nanoemulsion according to claim 30 , wherein said hetero atoms are chosen from oxygen, nitrogen, and sulfur.
33. A nanoemulsion according to claim 30 , wherein said aliphatic groups are chosen from alkyl, alkoxy, polyoxy(C2-C6)alkylene, alkylamide, (C12-C22)alkylamido(C2-C6)alkyl, (C12-C22)alkylacetate, and hydroxyalkyl groups comprising from 1 to 30 carbon atoms.
34. A nanoemulsion according to claim 30 , wherein said alkenyl and alkyl groups comprising from 8 to 30 carbon atoms are chosen from groups derived from tallow fatty acid.
35. A nanoemulsion according to claim 30 , wherein said diquaternary ammonium salts of formula (VI) comprise propane tallow diammonium dichloride.
36. A nanoemulsion according to claim 30 , wherein said R15 alkyl groups are chosen from linear and branched alkyl groups.
37. A nanoemulsion according to claim 36 , wherein said R15 alkyl groups are chosen from linear alkyl groups.
38. A nanoemulsion according to claim 37 , wherein said R15 alkyl groups are chosen from methyl, ethyl, hydroxyethyl and dihydroxypropyl groups.
39. A nanoemulsion according to claim 38 , wherein said R15 alkyl groups are chosen from methyl and ethyl groups.
40. A nanoemulsion according to claim 30 , wherein said sum of x+y+z ranges from 1 to 10.
41. A nanoemulsion according to claim 30 , wherein when said R16 is chosen from linear and branched, saturated and unsaturated, C1-C22 hydrocarbon-based groups, R16 is chosen from hydrocarbon-based groups comprising from 12 to 22 carbon atoms, and hydrocarbon-based groups comprising from 1 to 3 carbon atoms.
42. A nanoemulsion according to claim 30 , wherein when said R18 is chosen from linear and branched, saturated and unsaturated, C1-C6 hydrocarbon-based groups, R18 comprises from 1 to 3 carbon atoms.
43. A nanoemulsion according to claim 42 , wherein said R18 comprises from I to 3 carbon atoms.
44. A nanoemulsion according to claim 30 , wherein said R17, R19 and R21, which may be identical or different, are each chosen from linear and branched, saturated and unsaturated C11-C21, hydrocarbon-based groups.
45. A nanoemulsion according to claim 44 , wherein said R17, R19 and R21, which may be identical or different, are each chosen from linear and branched, saturated and unsaturated, C11-C21 alkyl and alkenyl groups.
46. A nanoemulsion according to claim 30 , wherein said x and z, which may be identical or different, are each chosen from 0 or 1.
47. A nanoemulsion according to claim 30 , wherein said y is equal to 1.
48. A nanoemulsion according to claim 30 , wherein said n, p and r, which may be identical or different, are each chosen from 2 and 3.
49. A nanoemulsion according to claim 48 , wherein said n, p and r, which may be identical or different, are each equal to 2.
50. A nanoemulsion according to claim 30 , wherein said anion is chosen from halides and alkyl sulfates.
51. A nanoemulsion according to claim 50 , wherein said halides are chosen from chloride, bromide, and iodide.
52. A nanoemulsion according to claim 50 , wherein said alkyl sulfates are chosen from methyl sulfate.
53. A nanoemulsion according to claim 30 , wherein said anion is chosen from methanesulfonate, phosphate, nitrate, and tosylate.
54. A nanoemulsion according to claim 53 , wherein said anion is chosen from anions derived from organic acids.
55. A nanoemulsion according to claim 30 , wherein said cationic amphiphilic lipids of formula (IV) are chosen from tetraalkyammonium chlorides.
56. A nanoemulsion according to claim 55 , wherein said tetraalkyammonium chlorides are chosen from dialkyldimethylammonium chlorides, and alkyltrimethylammonium chlorides, wherein said alkyl portion comprises from 12 to 22 carbon atoms.
57. A nanoemulsion according to claim 30 , wherein said cationic amphiphilic lipids of formula (IV) are chosen from behenyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium chloride, benzyldimethylstearylammonium chloride and stearamidopropyidimethyl(myristyl acetate)ammonium chloride.
58. A nanoemulsion according to claim 30 , wherein said cationic amphiphilic lipids of formula (IV) are chosen from behenyltrimethylammonium salts and stearamidopropyidimethyl(myristyl acetate)ammonium salts.
59. A nanoemulsion according to claim 25 , wherein said at least one ionic amphiphilic lipid chosen from cationic amphiphilic lipids and anionic amphiphilic lipids is present in said nanoemulsion in an amount ranging from 0.01% to 10% by weight relative to the total weight of the nanoemulsion.
60. A nanoemulsion according to claim 59 , wherein said at least one ionic amphiphilic lipid chosen from cationic amphiphilic lipids and anionic amphiphilic lipids is present in said nanoemulsion in an amount ranging from 0.2% to 5% by weight relative to the total weight of the nanoemulsion.
61. A nanoemulsion according to claim 1 , wherein said at least one oil is chosen from plant oils, animal oils, synthetic oils, mineral oils, halogenated oils, esters of a mineral acid and of an alcohol, liquid carboxylic acid esters and silicones.
62. A nanoemulsion according to claim 1 , wherein said at least one oil is present in an amount ranging from 2% to 40% by weight relative to the total weight of the nanoemulsion.
63. A nanoemulsion according to claim 62 , wherein said at least one oil is present in an amount ranging from 4% to 30% by weight relative to the total weight of the nanoemulsion.
64. A nanoemulsion according to claim 1 further comprising at least one active agent chosen from water-soluble, water-dispersible, and liposoluble cosmetic active agents and water-soluble, water-dispersible, and liposoluble dermopharmaceutical active agents.
65. A nanoemulsion according to claim 1 , wherein said nanoemulsion has a turbidity ranging from 60 NTU to 600 NTU.
66. A nanoemulsion according to claim 1 further comprising at least one aminosilicone.
67. A nanoemulsion according to claim 66 , wherein said at least one aminosilicone is present in an amount ranging from 0.05% to 10% by weight relative to the total weight of the nanoemulsion.
68. A nanoemulsion according to claim 67 , wherein said at least one aminosilicone is present in an amount ranging from 0.1% to 5% by weight relative to the total weight of the nanoemulsion.
69. A nanoemulsion according to claim 68 , wherein said at least one aminosilicone is present in an amount ranging from 0.3% to 3% by weight relative to the total weight of the nanoemulsion.
70. A composition for topical use chosen from cosmetic compositions and dermopharmaceutical compositions, wherein said composition for topical use comprises a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
71. A composition for caring for a keratin material chosen from body skin, facial skin, mucous membranes, the scalp, the hair, the nails, the eyelashes, and the eyebrows comprising a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
72. A composition for washing a keratin material chosen from body skin, facial skin, mucous membranes, the scalp, the hair, the nails, the eyelashes, and the eyebrows comprising a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
73. A cosmetic make up composition for a keratin material chosen from body skin, facial skin, mucous membranes, the scalp, the hair, the nails, the eyelashes, and the eyebrows comprising a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
74. A cosmetic make-up-removing composition for a keratin material chosen from body skin, facial skin, mucous membranes, the scalp, the hair, the nails, the eyelashes, and the eyebrows comprising a nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
75. A non-therapeutic care process for a keratin material comprising applying to said keratin material a nanoemulsion comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
76. A process according to claim 75 , wherein said keratin material is chosen from the skin, the hair, the eyelashes, the eyebrows, the nails, mucous membranes and the scalp.
77. A non-therapeutic care process for a keratin material comprising applying to said keratin material a composition for topical use chosen from cosmetic compositions and dermopharmaceutical compositions, wherein said composition for topical use comprises a nanoemulsion comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
78. A process according to claim 77 , wherein said keratin material is chosen from the skin, the hair, the eyelashes, the eyebrows, the nails, mucous membranes and the scalp.
79. A process for thickening oil-in-water nanoemulsions comprising including at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block in said nanoemulsions comprising oil globules with an average size of less than 150 nm and comprising at least one oil and at least one amphiphilc lipid.
80. An oil-in-water nanoemulsion comprising oil globules with an average size of less than 150 nm comprising at least one oily phase, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block.
81. A nanoemulsion according to claim 80, wherein said at least one oily phase and said at least one amphiphilic lipid are present in amounts wherein the weight ratio of the amount of said at least one oily phase to the amount of said at least one amphiphilic lipid ranges from 1:1 to 10:1.
82. A nanoemulsion according to claim 81, wherein said at least one oily phase and said at least one amphiphilic lipid are present in amounts wherein the weight ratio of the amount of said at least one oily phase to the amount of said at least one amphiphilic lipid ranges from 1.2:1 to 10:1.
83. A nanoemulsion according to claim 82, wherein said at least one oily phase and said at least one amphiphilic lipid are present in amounts wherein the weight ratio of the amount of said at least one oily phase to the amount of said at least one amphiphilic lipid ranges from 1.5:1 to 6:1.
84. A nanoemulsion according to claim 83, wherein said at least one oily phase and said at least one amphiphilic lipid are present in amounts wherein the weight ratio of the amount of said at least one oily phase to the amount of said at least one amphiphilic lipid ranges from 2:1 to 5:1.
85. A nanoemulsion according to claim 54 , wherein said anions derived from organic acids are chosen from acetate and lactate.
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FR2804015B1 (en) | 2005-12-23 |
EP1120102A2 (en) | 2001-08-01 |
JP2001226221A (en) | 2001-08-21 |
DE60030835T2 (en) | 2007-02-08 |
DE60030835T3 (en) | 2014-10-23 |
EP1120102B2 (en) | 2014-08-13 |
FR2804015A1 (en) | 2001-07-27 |
BR0100424A (en) | 2001-09-25 |
DE60030835D1 (en) | 2006-11-02 |
EP1120102B1 (en) | 2006-09-20 |
US8114389B2 (en) | 2012-02-14 |
CA2332469A1 (en) | 2001-07-21 |
US20030138465A9 (en) | 2003-07-24 |
ES2272246T5 (en) | 2014-09-30 |
EP1120102A3 (en) | 2001-11-14 |
ES2272246T3 (en) | 2007-05-01 |
US20050226842A1 (en) | 2005-10-13 |
JP2005263815A (en) | 2005-09-29 |
ATE339945T1 (en) | 2006-10-15 |
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