WO2001030950A1 - Improved low odor, hard surface cleaner with enhanced soil removal - Google Patents
Improved low odor, hard surface cleaner with enhanced soil removal Download PDFInfo
- Publication number
- WO2001030950A1 WO2001030950A1 PCT/US2000/028404 US0028404W WO0130950A1 WO 2001030950 A1 WO2001030950 A1 WO 2001030950A1 US 0028404 W US0028404 W US 0028404W WO 0130950 A1 WO0130950 A1 WO 0130950A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cleaner
- surfactant
- edta
- amount
- organic solvent
- Prior art date
Links
- 239000002689 soil Substances 0.000 title claims abstract description 44
- 239000004094 surface-active agent Substances 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 230000001376 precipitating effect Effects 0.000 claims abstract description 23
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 239000003960 organic solvent Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002738 chelating agent Substances 0.000 claims abstract description 13
- 239000002280 amphoteric surfactant Substances 0.000 claims abstract description 11
- 125000001453 quaternary ammonium group Chemical group 0.000 claims abstract description 10
- 125000000129 anionic group Chemical group 0.000 claims abstract description 9
- 230000003381 solubilizing effect Effects 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims abstract description 7
- JZBRFIUYUGTUGG-UHFFFAOYSA-J tetrapotassium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [K+].[K+].[K+].[K+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O JZBRFIUYUGTUGG-UHFFFAOYSA-J 0.000 claims abstract description 7
- -1 alkylbenzene sulfonate Chemical class 0.000 claims description 20
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 20
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical group [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 16
- 239000002736 nonionic surfactant Substances 0.000 claims description 14
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 9
- 239000000872 buffer Substances 0.000 claims description 8
- 150000003856 quaternary ammonium compounds Chemical class 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000003472 neutralizing effect Effects 0.000 claims description 5
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 5
- 239000003945 anionic surfactant Substances 0.000 claims description 4
- 239000000975 dye Substances 0.000 claims description 4
- 239000003205 fragrance Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 125000005207 tetraalkylammonium group Chemical group 0.000 claims description 4
- 125000005270 trialkylamine group Chemical group 0.000 claims description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 3
- 150000002009 diols Chemical class 0.000 claims description 3
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 claims description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical class NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 claims description 2
- 239000003752 hydrotrope Substances 0.000 claims description 2
- MPQXHAGKBWFSNV-UHFFFAOYSA-N oxidophosphanium Chemical class [PH3]=O MPQXHAGKBWFSNV-UHFFFAOYSA-N 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 150000003462 sulfoxides Chemical class 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims 1
- 150000002170 ethers Chemical class 0.000 claims 1
- 238000005187 foaming Methods 0.000 claims 1
- 229920000847 nonoxynol Polymers 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 claims 1
- 239000000344 soap Substances 0.000 description 18
- 239000002904 solvent Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 10
- 238000009472 formulation Methods 0.000 description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical group CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 235000008504 concentrate Nutrition 0.000 description 4
- QLBHNVFOQLIYTH-UHFFFAOYSA-L dipotassium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [K+].[K+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O QLBHNVFOQLIYTH-UHFFFAOYSA-L 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 230000000845 anti-microbial effect Effects 0.000 description 3
- XMGQYMWWDOXHJM-JTQLQIEISA-N (+)-α-limonene Chemical class CC(=C)[C@@H]1CCC(C)=CC1 XMGQYMWWDOXHJM-JTQLQIEISA-N 0.000 description 2
- FENFUOGYJVOCRY-UHFFFAOYSA-N 1-propoxypropan-2-ol Chemical compound CCCOCC(C)O FENFUOGYJVOCRY-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 150000008379 phenol ethers Chemical class 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- 150000003505 terpenes Chemical class 0.000 description 2
- 235000007586 terpenes Nutrition 0.000 description 2
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 2
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 2
- PSBDWGZCVUAZQS-UHFFFAOYSA-N (dimethylsulfonio)acetate Chemical compound C[S+](C)CC([O-])=O PSBDWGZCVUAZQS-UHFFFAOYSA-N 0.000 description 1
- LRMDXTVKVHKWEK-UHFFFAOYSA-N 1,2-diaminoanthracene-9,10-dione Chemical class C1=CC=C2C(=O)C3=C(N)C(N)=CC=C3C(=O)C2=C1 LRMDXTVKVHKWEK-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 description 1
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 description 1
- QJRVOJKLQNSNDB-UHFFFAOYSA-N 4-dodecan-3-ylbenzenesulfonic acid Chemical compound CCCCCCCCCC(CC)C1=CC=C(S(O)(=O)=O)C=C1 QJRVOJKLQNSNDB-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 241001147693 Staphylococcus sp. Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- JNGWKQJZIUZUPR-UHFFFAOYSA-N [3-(dodecanoylamino)propyl](hydroxy)dimethylammonium Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)[O-] JNGWKQJZIUZUPR-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 150000003938 benzyl alcohols Chemical class 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical class OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 1
- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical group CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical group [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000001400 nonyl 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])[H] 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000010665 pine oil Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229940117986 sulfobetaine Drugs 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical class S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 150000003509 tertiary alcohols Chemical class 0.000 description 1
- LESFYQKBUCDEQP-UHFFFAOYSA-N tetraazanium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound N.N.N.N.OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O LESFYQKBUCDEQP-UHFFFAOYSA-N 0.000 description 1
- 239000003799 water insoluble solvent Substances 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- GDJZZWYLFXAGFH-UHFFFAOYSA-M xylenesulfonate group Chemical group C1(C(C=CC=C1)C)(C)S(=O)(=O)[O-] GDJZZWYLFXAGFH-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/88—Ampholytes; Electroneutral compounds
- C11D1/94—Mixtures with anionic, cationic or non-ionic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/835—Mixtures of non-ionic with cationic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0043—For use with aerosol devices
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/43—Solvents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/75—Amino oxides
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/755—Sulfoxides
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/79—Phosphine oxides
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/88—Ampholytes; Electroneutral compounds
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- C11D2111/14—
Definitions
- the invention relates to an improved hard surface cleaner especially effective on bathroom soils, such as soap scum.
- the inventive hard surface cleaner benefits from a novel combination of builders, namely, a precipitating and a non-precipitating builder.
- a number of hard surface cleaners have been specially formulated to target bathroom soils. These include products containing liquid hypochlorite for combating mildew and fungus; products with quaternary ammonium compounds as bacteriostats; and acidic cleaners, such as those containing phosphoric or other strong mineral acids.
- cleaners will typically include buffers, dyes, fragrances, and the like in order to provide performance and/or aesthetic enhancements.
- Mills et al. U.S. Patent 5,814,591, further of common assignment, discloses and claims a hard surface cleaner which includes surfactants and tetraammonium EDTA for proficient soap scum and soil removal. Its disclosure is incorporated herein by reference thereto.
- the invention provides an aqueous, hard surface cleaner, said cleaner comprising: an aqueous hard surface cleaner with improved soil, especially soap scum, removal comprising:
- the invention further comprises a method of cleaning soils, especially soap scum from hard surfaces by applying said inventive cleaner to said soap scum, and removing both from said surface.
- the invention provides an improved, all purpose cleaner especially adapted for the complete and speedy removal of soap scum and other bathroom soils from a hard surface.
- cleaners are intended to clean hard surfaces by application of a metered discrete amount of the cleaner, typically by pump or trigger sprayer onto the surface to be cleaned or onto the workpiece —such as a soft cloth, mop or sponge— and then wiping the surface, thus removing the soil and the cleaner, with or without the need for rinsing with water.
- the concentrate is first diluted with water, or water/solvent mixture, then the diluted mixture is applied by workpiece or by simply pouring onto the surface to be cleaned.
- the typical bathroom surface is a shower stall, both the glass doors, as well as the vertical wall surfaces (typically made of tile, or composite materials), sinks and glass.
- the cleaner is preferably a single phase, clear, isotropic solution, having a viscosity generally less than about 100 Centipoise (“cps”) (unless as a concentrate, in which case, below about 100,000 cps).
- the cleaner itself has the following ingredients:
- adjuncts in small amounts such as buffers, fragrance, dye and the like can be included to provide desirable attributes of such adjuncts.
- the solvent is a water soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C. It is preferably selected from C ⁇ alkanol, C, ⁇ diols, C ⁇ alkylene glycol ethers, and mixtures thereof.
- the alkanol can be selected from methanol, ethanol, n-propanol, isopropanol, butanol, pentanol, hexanol, their various positional isomers, and mixtures of the foregoing. It may also be possible to utilize in addition to, or in place of, said alkanols, the diols such as methylene, ethylene, propylene and butylene glycols, and mixtures thereof.
- the alkylene glycol ether solvents can include ethylene glycol monobutyl ether, ethylene glycol monopropyl ether, propylene glycol n-propyl ether, propylene glycol monobutyl ether, diethylene glycol n-butyl ether, dipropylene glycol methyl ether, and mixtures thereof.
- Preferred glycol ethers are ethylene glycol monobutyl ether, also known as butoxyethanol, sold as butyl Cellosolve by Union Carbide, and also sold by Dow Chemical Co.,
- 2-(2-butoxyethoxy) ethanol sold as butyl Carbitol, also by Union Carbide
- propylene glycol n-propyl ether available from a variety of sources.
- Another preferred alkylene glycol ether is propylene glycol, t-butyl ether, which is commercially sold as Arcosolve PTB, by Arco Chemical Co.
- the n-butyl ether of propylene glycol is also preferred.
- Other suppliers of preferred solvents include Union Carbide. If mixtures of solvents are used, the amounts and ratios of such solvents used are important to determine the optimum cleaning and streak/film performances of the inventive cleaner.
- the total amount of solvent is not limited to no more than 50%, more preferably no more than 25%, and most preferably, no more than 15%, of the cleaner.
- a preferred range is about 1-15%.
- These amounts of solvents are generally referred to as dispersion-effective or solubilizing effective amounts, since the other components, such as surfactants, are materials which are assisted into solution by the solvents.
- the solvents are also important as cleaning materials on their own, helping to loosen and solubilize greasy soils for easy removal from the surface cleaned.
- the surfactant is an anionic, nonionic, amphoteric surfactant, or mixtures thereof.
- quaternary ammonium surfactant can be added.
- the anionic surfactant is, for example, a linear or branched C M4 alkylbenzene sulfonate, alkane sulfonate, alkyl sulfate, or generally, a sulfated or sulfonated C 6 . 14 surfactant.
- Witconate NAS for example, is a 1 -octane-sufonate, from Witco Chemical Company.
- Pilot L-45 a C n 5 alkylbenzene sulfonate (which are referred to as "LAS"), from Pilot Chemical Co., Biosoft SI 00 and SI 30 (non-neutralized linear alkylbenzene sulfonic acid, which is referred to as "HLAS") and S40 from Stepan Company; sodium dodecyl sulfate and sodium lauryl sulfate.
- acidic surfactants having a higher actives level may be desirable due to cost-effectiveness.
- the nonionic surfactants are selected from alkoxylated alcohols, alkoxylated phenol ethers, and other surfactants often referred to as semi-polar nonionics, such as the trialkyl amine oxides.
- the alkoxylated phenol ethers include octyl- and nonylphenol ethers, with varying degrees of alkoxylation., such as 1 - 10 moles of ethylene oxide per mole of phenol.
- the alkyl group can vary from C ⁇ , although octyl- and nonyl chain lengths are readily available.
- Various suitable products available from Rohm and Haas under the trademark Triton such as Triton N-57, N-101, N-111, X-45, X-100, X-102, and from Mazer Chemicals under the trademark Macol, from GAF Corporation under the trademark Igepal, from Texaco Chemical Company under the trademark Surfonic.
- the alkoxylated alcohols include ethoxylated, and ethoxylated and propoxylated C M6 alcohols, with about 2-10 moles of ethylene oxide, or 1-10 and 1-10 moles of ethylene and propylene oxide per mole of alcohol, respectively.
- exemplary surfactants are available from Shell Chemical under the trademarks Neodol and Alfonic; and Huntsman.
- the semi-polar amine oxides are also preferred, although, for the invention, a mixture of nonionic and amine oxide surfactants can also be used.
- the amine oxides referred to as mono-long chain, di-short chain, trialkyl amine oxides, have the general configuration:
- R is C 6 . 24 alkyl, and R' and R" are both C alkyl, or C hydroxyalkyl, although R' and R" do not have to be equal.
- These amine oxides can also be ethoxylated or propoxylated.
- the preferred amine oxide is lauryl amine oxide.
- the commercial sources for such amine oxides are Barlox 10, 12, 14 and 16 from Lonza Chemical Company, Varox by Witco and Ammonyx by Stepan Co.
- a further preferred semi-polar nonionic surfactant is alkylamidoalkylenedialkylamine oxide. Its structure is shown below:
- R 1 is C 5 . 20 alkyl
- R 2 and R 3 are C M alkyl, R 1 -C-NH-(CH 2 ) n - or
- the surfactant could be ethoxylated (1-10 moles of EO/mole) or propoxylated (1-10 moles of PO/mole).
- This surfactant is available from various sources, including from Lonza Chemical Company, as a cocoamidopropyldimethyl amine oxide, sold under the brand name Barlox C.
- semi-polar surfactants include phosphine oxides and sulfoxides.
- amphoteric surfactant is typically an alkylbetaine or a sulfobetaine.
- alkylamidoalkyldialkylbetaines are alkylamidoalkyldialkylbetaines. These have the structure:
- R 1 is C ⁇ o alkyl
- R 2 and R 3 are both C M alkyl, although R 2 and R 3 do not have to be equal
- m can be 1 -5, preferably 3
- n can be 1 -5, preferably 1.
- alkylbetaines can also be ethoxylated or propoxylated.
- the preferred alkylbetaine is a cocoamidopropyldimethyl betaine called Lonzaine CO, available from Lonza Chemical Co.
- Other vendors are Henkel KGaA, which provides Velvetex AB, and Witco Chemical Co., which offers Rewoteric AMB-15, both of which products are cocobetaines.
- the amounts of surfactants present are to be somewhat minimized, for purposes of cost-savings and to generally restrict the dissolved actives which could contribute to leaving behind residues when the cleaner is applied to a surface.
- the amounts added are generally about 0.001-10%), more preferably 0.002-3.00% surfactant. These are generally considered to be cleaning-effective amounts.
- the upper level of surfactant can be as high as 25%, more preferably around 15%. If a mixture of anionic and nonionic or amphoteric surfactants is used, the ratio of the anionic surfactant to the nonionic or amphoteric surfactant is about 20:1 to 1 :20, more preferably about 10:1 to 1 :10.
- the invention may further optionally include a cationic surfactant, specifically, a quaternary ammonium surfactant.
- a cationic surfactant specifically, a quaternary ammonium surfactant.
- a quaternary ammonium surfactant typically used in bathroom cleaners because they are generally considered "broad spectrum" antimicrobial compounds, having efficacy against both gram positive (e.g., Staphylococcus sp. and gram negative (e.g., Escherischia coli) microorganisms.
- the quaternary ammonium surfactant, or compounds are incorporated for bacteriostatic/disinfectant purposes and should be present in amounts effective for such purposes.
- the quaternary ammonium compounds are selected from mono-long-chain, tri-short-chain, tetraalkyl ammonium compounds, di-long-chain, di-short-chain tetraalkyl ammonium compounds, trialkyl, mono-benzyl ammonium compounds, and mixtures thereof.
- long chain is meant about C ⁇ o alkyl.
- short chain is meant C,. 5 alkyl, preferably C,. 3 .
- Preferred materials include Stepan series, such as BTC 2125 series; Barquat and Bardac series, such as Bardac MB 2050, from Lonza Chemical. Typical amounts of the quaternary ammonium compound range from preferably about 0-5 %, more preferably about 0.001-2%. 3.
- K to K 3 EDTA The incompletely neutralized ethylene diamine tetraacetate (referred to as "K to K 3 EDTA”) is a critical part of the invention. Its use, in place of a standard chelating agent, tetrasodium EDTA, results in not only a surprisingly complete removal of various soils, including bathroom soap scum soils, but an unexpectedly rapid removal as well. The fact that this salt of EDTA is so effective versus the tetrasodium salt was quite unawaited since, in other literature (except for the co-pending Parent application, Serial No. 08/731,653, filed October 17, 1996; hereinafter, the "Parent") a potassium salt has not been demonstrated to be a superior performer as compared to the tetrasodium salt.
- the inventive potassium EDTA has a distinct advantage in having low or no odor. This latter advantage is quite significant since the user of a cleaning product will not be favorably inclined to repeat usage of a product whose odor may not please her/him. Moreover, in comparison to the Parent, it has been found that there is a significant cost savings and at least comparable, if not better, performance benefits when
- K 3 EDTA is used in conjunction with a precipitating co-builder, most preferably either potassium carbonate, K 2 CO 3 , or potassium oxalate, K 2 C 2 O 4 .
- the K to K 3 EDTA can favorably be prepared by taking the acid form of EDTA and neutralizing it with KOH in a less than stoichiometric quantity. For example, to 7g of the acid form of EDTA and 79.3g deionized water, 2.1g of KOH solution (45%) can be slowly added, resulting in a 52% K 3 EDTA solution.
- the acid form of EDTA can be obtained from Hampshire Chemicals and Aldrich Chemicals.
- the amount of K to K 3 EDTA added should be in the range of 0.01-30%, more preferably 0.01-20%, by weight of the cleaner.
- Precipitating Co-Builder The other component of the combined chelating agent is a precipitating co-builder. It is preferred to be a precipitating potassium salt. Most preferred are potassium carbonate, K 2 CO 3 , or potassium oxalate, K 2 C 2 O 4 .
- the inventors have additionally discovered that, unlike the Parent, if a combination of K(EDTA and an amount of precipitating co-builder, especially K 2 CO 3 in an amount greatly exceeding 0.10%, or K 2 C 2 O 4 in an amount not so restricted, is used , there will be a performance benefit exceeding the K 4 EDTA alone, or with no more than 0.10% K 2 CO 3 .
- the amount of the combined chelating agents should be about 0.5 to 15% of the K to K 3 EDTA, and the precipitating co-builder, about 0.1 to 15%, the ratio of the other to the other being about 10: 1 to 1 : 1.
- the K,EDTA should be about 0.5 to 15%, and the precipitating co-builder must exceed 0.1 , to about 15%, and especially preferably exceeds 1 %, the ratio of the first to the other being about 10:1 to 1:1.
- the cleaner is an aqueous cleaner with relatively low levels of actives
- the principal ingredient is water, which should be present at a level of at least about 50%, more preferably at least about 80%, and most preferably, at least about 90%. Deionized water is preferred.
- adjuncts can be added for improving cleaning performance or aesthetic qualities of the cleaner.
- buffers could be added to maintain constant pH (which for the invention is between about 7-14, more preferably between about 8-13).
- These buffers include NaOH, KOH, Na 2 CO 3 , K 2 CO 3 , as alkaline buffers, and phosphoric, hydrochloric, sulfuric acids as acidic buffers, and others.
- KOH is a preferred buffer since, in the invention, one way of obtaining potassium EDTA is to take the acidic EDTA acid and neutralize it with an appropriate, stoichiometric amount of KOH.
- Builders such as phosphates, silicates, and again, carbonates, may be desirable.
- solubilizing materials such as hydrotropes, e.g.s., cumene, toluene and xylene sulfonates, may also be desirable.
- Adjuncts for cleaning include additional surfactants, such as those described in Kirk-Othmer, Encyclopedia of Chemical Technology. 3rd Ed., Volume 22, pp. 332-432 (Marcel-Dekker, 1983), and McCutcheon's Soaps and Detergents (N. Amer. 1984), which are incorporated herein by reference.
- Aesthetic adjuncts include fragrances, such as those available from Givaudan, IFF, Quest, Sozio, Bush Boake and Allen, Firmenich, Dragoco and others, and dyes and pigments which can be solubilized or suspended in the formulation, such as diaminoanthraquinones.
- Water-insoluble solvents may sometimes be desirable as added grease or oily soil cutting agents. These types of solvents include tertiary alcohols, hydrocarbons (alkanes), pine-oil, d-limonene and other terpenes and terpene derivatives, and benzyl alcohols.
- propellants such as in an aerosol formulation
- propellants such as in an aerosol formulation
- Thickeners such as calcium carbonate, sodium bicarbonate, aluminum oxide, and polymers, such as polyacrylate, starch, xanthan gum, alginates, guar gum, cellulose, and the like, may be desired additives.
- the use of some of these thickeners (CaCO 3 or NaHCO 3 ) is to be distinguished from their potential use as builders, generally by particle size or amount used. Further, small particle size solids can be used as abrasives (see co-pending application Serial No.
- Antifoaming agents, or foam controlling agents may be also desirable, such as silicone defoamers.
- the amounts of these cleaning and aesthetic adjuncts should be in the range of 0-10%, more preferably 0-2%.
- Soap scum soil consisted of a layer of calcium stearate ⁇ to which a blue pigment was added as an indicator for soil removal — baked onto a ceramic tile.
- soil removal is either visually measured, using a panel of experts who view soil removal on a 1 to 10 scale, with 10 being better, or, when using an automated assay, using a proprietary device to determine the cumulative amount of soil removed at each cycle, with a maximum of 10-100 cycles, depending on the test run. The higher score achieved is more preferred.
- a first base formulation is depicted below:
- Example V has a pH of about 7.7.
- TABLE IV (Inventive Formula Variation, Example VI)
- Example VI has a pH of about 10.1.
- Performance is expressed as relative % Soil Removal for 30 cycles.
Abstract
An aqueous hard surface cleaner with improved soil removal is provided and has, as components, the following: (a) either an anionic, nonionic, amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, the total amount of the surfactants being present in a cleaning effective amount; (b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25 °C, present in a solubilizing - or dispersion - effective amount; (c) a combination of (i) an incompletely neutralized potassium ethylenediamine - tetraacetate (EDTA) and (ii) a precipitating co-builder as chelating agents present in an amount effective to enhance soil removal in said cleaner; and (d) the remainder, water.
Description
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Title: IMPROVED LOW ODOR, HARD SURFACE CLEANER WITH ENHANCED SOIL REMOVAL
Background of the Invention
1. Field of the Invention The invention relates to an improved hard surface cleaner especially effective on bathroom soils, such as soap scum. The inventive hard surface cleaner benefits from a novel combination of builders, namely, a precipitating and a non-precipitating builder.
2. Brief Statement of the Related Art A number of hard surface cleaners have been specially formulated to target bathroom soils. These include products containing liquid hypochlorite for combating mildew and fungus; products with quaternary ammonium compounds as bacteriostats; and acidic cleaners, such as those containing phosphoric or other strong mineral acids.
These cleaners will typically include buffers, dyes, fragrances, and the like in order to provide performance and/or aesthetic enhancements.
Co-pending and parent application Serial No. 08/731,653, filed October 17, 1996, of Robbins et al., entitled "Low Odor, Hard Surface Cleaner with Improved Soil Removal," of common assignment, discloses and claims a low odor hard surface cleaner which includes amine oxide, quaternary ammonium compound and tetrapotassium ethylenediaminetetraacetate for enhanced and proficient soil removal. Its disclosure is incorporated herein by reference thereto.
Co-pending application Serial No. 08/807,187, filed February 2, 1997, of Zhou et al., entitled "Antimicrobial Hard Surface Cleaner," also of common assignment, discloses and
claims an antimicrobial hard surface cleaner which includes amine oxide, quaternary ammonium compound and tetrasodium EDTA, in which a critical amine oxide: EDTA ratio results in enhanced non-streaking and non-filming performance. Its disclosure is incorporated herein by reference thereto.
Mills et al., U.S. Patent 5,814,591, further of common assignment, discloses and claims a hard surface cleaner which includes surfactants and tetraammonium EDTA for proficient soap scum and soil removal. Its disclosure is incorporated herein by reference thereto.
However, none of the art discloses, teaches or suggest the use of a less than completely neutralized EDTA (especially where the neutralizing agent is a potassium salt — e.g., KOH — resulting in a K+ counterion), combined with a precipitating builder (preferably, another and different potassium salt) as an effective chelating agent which additionally surprisingly enhances the soil removing, especially soap scum-removing, ability of the liquid, one phase cleaners formulated therewith. Additionally, unlike some of the prior chelating agents, the combined non-completely neutralized potassium EDTA has very low to no odor, which is a significant beneficial attribute to the inventive cleaners hereof. Moreover, none of the art discloses, teaches or suggests the unexpected speed at which the inventive cleaners work.
Summary of the Invention and Objects The invention provides an aqueous, hard surface cleaner, said cleaner comprising: an aqueous hard surface cleaner with improved soil, especially soap scum, removal comprising:
(a) either an anionic, nonionic, amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, said surfactants being present in a cleaning - effective amount;
(b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C, said at least one organic solvent present in a solubilizing - or dispersion - effective amount;
(c) a combination of (i) an incompletely neutralized potassium ethylenediamine - tetraacetate (EDTA) and (ii) a precipitating co-builder as chelating agents present in an amount effective to enhance soil removal in said cleaner; and
(d) the remainder, water.
The invention further comprises a method of cleaning soils, especially soap scum from hard surfaces by applying said inventive cleaner to said soap scum, and removing both from said surface.
It is therefore an object of this invention to improve soil, especially soap scum, removal from hard surfaces.
It is another object of this invention to markedly increase the speed in which such soils, especially soap scum, are removed from the hard surface cleaned.
It is also an object of this invention to provide a hard surface cleaner for bathroom soils, which include oily and particulate soils.
It is a further object of this invention to provide a low to no odor hard surface cleaner.
It is a still further object of this invention to provide a hard surface cleaner which has at least comparable performance at lower cost compared to a leading cleaner.
It is also an object of this invention to combine non-precipitating and precipitating builders to provide enhanced cleaning.
Detailed Description of the Invention The invention provides an improved, all purpose cleaner especially adapted for the complete and speedy removal of soap scum and other bathroom soils from a hard surface. These types of cleaners are intended to clean hard surfaces by application of a metered discrete amount of the cleaner, typically by pump or trigger sprayer onto the surface to be cleaned or onto the workpiece —such as a soft cloth, mop or sponge— and then wiping the
surface, thus removing the soil and the cleaner, with or without the need for rinsing with water. In the case of a concentrate, the concentrate is first diluted with water, or water/solvent mixture, then the diluted mixture is applied by workpiece or by simply pouring onto the surface to be cleaned. The typical bathroom surface is a shower stall, both the glass doors, as well as the vertical wall surfaces (typically made of tile, or composite materials), sinks and glass. The cleaner is preferably a single phase, clear, isotropic solution, having a viscosity generally less than about 100 Centipoise ("cps") (unless as a concentrate, in which case, below about 100,000 cps). The cleaner itself has the following ingredients:
(a) an anionic, nonionic or amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, said surfactants being present in a cleaning - effective amount;
(b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C, said at least one organic solvent present in a solubilizing - or dispersion - effective amount; (c) a combination of (i) an incompletely neutralized potassium ethylenediamine - tetraacetate (EDTA) and (ii) a precipitating co-builder as chelating agents present in an amount effective to enhance soil removal in said cleaner; and (d) the remainder, water.
Additional adjuncts in small amounts such as buffers, fragrance, dye and the like can be included to provide desirable attributes of such adjuncts.
In the application, effective amounts are generally those amounts listed as the ranges or levels of ingredients in the descriptions which follow hereto. Unless otherwise stated, amounts listed in percentage ("%'s") are in weight percent (based on 100% active) of the composition.
1. Solvents
The solvent is a water soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C. It is preferably selected from C^ alkanol, C,^ diols, C^ alkylene glycol ethers, and mixtures thereof. The alkanol can be selected from methanol,
ethanol, n-propanol, isopropanol, butanol, pentanol, hexanol, their various positional isomers, and mixtures of the foregoing. It may also be possible to utilize in addition to, or in place of, said alkanols, the diols such as methylene, ethylene, propylene and butylene glycols, and mixtures thereof.
It is preferred to use an alkylene glycol ether solvent in this invention. The alkylene glycol ether solvents can include ethylene glycol monobutyl ether, ethylene glycol monopropyl ether, propylene glycol n-propyl ether, propylene glycol monobutyl ether, diethylene glycol n-butyl ether, dipropylene glycol methyl ether, and mixtures thereof. Preferred glycol ethers are ethylene glycol monobutyl ether, also known as butoxyethanol, sold as butyl Cellosolve by Union Carbide, and also sold by Dow Chemical Co.,
2-(2-butoxyethoxy) ethanol, sold as butyl Carbitol, also by Union Carbide, and propylene glycol n-propyl ether, available from a variety of sources. Another preferred alkylene glycol ether is propylene glycol, t-butyl ether, which is commercially sold as Arcosolve PTB, by Arco Chemical Co. The n-butyl ether of propylene glycol is also preferred. Other suppliers of preferred solvents include Union Carbide. If mixtures of solvents are used, the amounts and ratios of such solvents used are important to determine the optimum cleaning and streak/film performances of the inventive cleaner. It is preferred to limit the total amount of solvent to no more than 50%, more preferably no more than 25%, and most preferably, no more than 15%, of the cleaner. A preferred range is about 1-15%. These amounts of solvents are generally referred to as dispersion-effective or solubilizing effective amounts, since the other components, such as surfactants, are materials which are assisted into solution by the solvents. The solvents are also important as cleaning materials on their own, helping to loosen and solubilize greasy soils for easy removal from the surface cleaned.
2. Surfactants The surfactant is an anionic, nonionic, amphoteric surfactant, or mixtures thereof.
Optionally, a quaternary ammonium surfactant can be added.
a. Anionic. Nonionic and Amphoteric Surfactants
The anionic surfactant is, for example, a linear or branched CM4 alkylbenzene sulfonate, alkane sulfonate, alkyl sulfate, or generally, a sulfated or sulfonated C6.14
surfactant. Witconate NAS, for example, is a 1 -octane-sufonate, from Witco Chemical Company. Pilot L-45, a Cn 5 alkylbenzene sulfonate (which are referred to as "LAS"), from Pilot Chemical Co., Biosoft SI 00 and SI 30 (non-neutralized linear alkylbenzene sulfonic acid, which is referred to as "HLAS") and S40 from Stepan Company; sodium dodecyl sulfate and sodium lauryl sulfate. The use of acidic surfactants having a higher actives level may be desirable due to cost-effectiveness.
The nonionic surfactants are selected from alkoxylated alcohols, alkoxylated phenol ethers, and other surfactants often referred to as semi-polar nonionics, such as the trialkyl amine oxides. The alkoxylated phenol ethers include octyl- and nonylphenol ethers, with varying degrees of alkoxylation., such as 1 - 10 moles of ethylene oxide per mole of phenol.
The alkyl group can vary from C^, although octyl- and nonyl chain lengths are readily available. Various suitable products available from Rohm and Haas under the trademark Triton, such as Triton N-57, N-101, N-111, X-45, X-100, X-102, and from Mazer Chemicals under the trademark Macol, from GAF Corporation under the trademark Igepal, from Texaco Chemical Company under the trademark Surfonic. The alkoxylated alcohols include ethoxylated, and ethoxylated and propoxylated CM6 alcohols, with about 2-10 moles of ethylene oxide, or 1-10 and 1-10 moles of ethylene and propylene oxide per mole of alcohol, respectively. Exemplary surfactants are available from Shell Chemical under the trademarks Neodol and Alfonic; and Huntsman. The semi-polar amine oxides are also preferred, although, for the invention, a mixture of nonionic and amine oxide surfactants can also be used. The amine oxides, referred to as mono-long chain, di-short chain, trialkyl amine oxides, have the general configuration:
R'
I R-N→O
I
R"
wherein R is C6.24 alkyl, and R' and R" are both C alkyl, or C hydroxyalkyl, although R' and R" do not have to be equal. These amine oxides can also be ethoxylated or propoxylated. The preferred amine oxide is lauryl amine oxide. The commercial sources for such amine oxides are Barlox 10, 12, 14 and 16 from Lonza Chemical Company, Varox by Witco and Ammonyx by Stepan Co.
A further preferred semi-polar nonionic surfactant is alkylamidoalkylenedialkylamine oxide. Its structure is shown below:
O R2
It I R1 -C-NH-(CH2)n-N→O
I
R3
O
wherein R1 is C5.20 alkyl, R2 and R3 are CM alkyl, R1 -C-NH-(CH2)n- or
-(CH2)p-OH, although R2 and R3 do not have to be equal or the same substituent, and n is 1-5, preferably 3, and p is 1-6, preferably 2-3. Additionally, the surfactant could be ethoxylated (1-10 moles of EO/mole) or propoxylated (1-10 moles of PO/mole).
This surfactant is available from various sources, including from Lonza Chemical Company, as a cocoamidopropyldimethyl amine oxide, sold under the brand name Barlox C.
Additionally semi-polar surfactants include phosphine oxides and sulfoxides.
The amphoteric surfactant is typically an alkylbetaine or a sulfobetaine. One group of preferred amphoterics are alkylamidoalkyldialkylbetaines. These have the structure:
R2 I
R,-C-NH-(CH2)m-N+-(CH2)nCOO-
" I
O R3
wherein R1 is C^o alkyl, R2 and R3 are both CM alkyl, although R2 and R3 do not have to be equal, and m can be 1 -5, preferably 3, and n can be 1 -5, preferably 1. These alkylbetaines can also be ethoxylated or propoxylated. The preferred alkylbetaine is a cocoamidopropyldimethyl betaine called Lonzaine CO, available from Lonza Chemical Co.
Other vendors are Henkel KGaA, which provides Velvetex AB, and Witco Chemical Co., which offers Rewoteric AMB-15, both of which products are cocobetaines.
The amounts of surfactants present are to be somewhat minimized, for purposes of cost-savings and to generally restrict the dissolved actives which could contribute to leaving behind residues when the cleaner is applied to a surface. However, the amounts added are generally about 0.001-10%), more preferably 0.002-3.00% surfactant. These are generally considered to be cleaning-effective amounts. On the other hand, if a dilutable concentrate is desired, the upper level of surfactant can be as high as 25%, more preferably around 15%. If a mixture of anionic and nonionic or amphoteric surfactants is used, the ratio of the anionic surfactant to the nonionic or amphoteric surfactant is about 20:1 to 1 :20, more preferably about 10:1 to 1 :10.
b. Quaternary Ammonium Surfactant
The invention may further optionally include a cationic surfactant, specifically, a quaternary ammonium surfactant. These types of surfactants are typically used in bathroom cleaners because they are generally considered "broad spectrum" antimicrobial compounds, having efficacy against both gram positive (e.g., Staphylococcus sp. and gram negative (e.g., Escherischia coli) microorganisms. Thus, the quaternary ammonium surfactant, or compounds, are incorporated for bacteriostatic/disinfectant purposes and should be present in amounts effective for such purposes.
The quaternary ammonium compounds are selected from mono-long-chain, tri-short-chain, tetraalkyl ammonium compounds, di-long-chain, di-short-chain tetraalkyl ammonium compounds, trialkyl, mono-benzyl ammonium compounds, and mixtures thereof. By "long" chain is meant about C^o alkyl. By "short" chain is meant C,.5 alkyl, preferably C,.3. Preferred materials include Stepan series, such as BTC 2125 series; Barquat and Bardac series, such as Bardac MB 2050, from Lonza Chemical. Typical amounts of the quaternary ammonium compound range from preferably about 0-5 %, more preferably about 0.001-2%.
3. Combination of Chelating Agents
(T) Incompletely Neutralized Potassium EDTA
The incompletely neutralized ethylene diamine tetraacetate (referred to as "K to K3 EDTA") is a critical part of the invention. Its use, in place of a standard chelating agent, tetrasodium EDTA, results in not only a surprisingly complete removal of various soils, including bathroom soap scum soils, but an unexpectedly rapid removal as well. The fact that this salt of EDTA is so effective versus the tetrasodium salt was quite unawaited since, in other literature (except for the co-pending Parent application, Serial No. 08/731,653, filed October 17, 1996; hereinafter, the "Parent") a potassium salt has not been demonstrated to be a superior performer as compared to the tetrasodium salt. Additionally, in comparison to another favorable salt, tetraamonium EDTA, the inventive potassium EDTA has a distinct advantage in having low or no odor. This latter advantage is quite significant since the user of a cleaning product will not be favorably inclined to repeat usage of a product whose odor may not please her/him. Moreover, in comparison to the Parent, it has been found that there is a significant cost savings and at least comparable, if not better, performance benefits when
K3EDTA is used in conjunction with a precipitating co-builder, most preferably either potassium carbonate, K2CO3, or potassium oxalate, K2C2O4.
The K to K3EDTA can favorably be prepared by taking the acid form of EDTA and neutralizing it with KOH in a less than stoichiometric quantity. For example, to 7g of the acid form of EDTA and 79.3g deionized water, 2.1g of KOH solution (45%) can be slowly added, resulting in a 52% K3EDTA solution. The acid form of EDTA can be obtained from Hampshire Chemicals and Aldrich Chemicals. In the neutralization of the acid form of EDTA, it is preferred to use less than a stoichiometric amount of alkali. It is most preferred to use either K3 or K2EDTA, with the non-neutralized sites on the molecule remaining protonated.
The amount of K to K3EDTA added should be in the range of 0.01-30%, more preferably 0.01-20%, by weight of the cleaner.
(ii) Precipitating Co-Builder
The other component of the combined chelating agent is a precipitating co-builder. It is preferred to be a precipitating potassium salt. Most preferred are potassium carbonate, K2CO3, or potassium oxalate, K2C2O4.
It is not exactly understood why, but the combination of the precipitating co-builder with the K to K3EDTA results in a synergistic cleaning performance at least comparable to the use of I ^EDTA alone, as the chelating agent, which is the invention claimed in the Parent.
On the other hand, the inventors have additionally discovered that, unlike the Parent, if a combination of K(EDTA and an amount of precipitating co-builder, especially K2CO3 in an amount greatly exceeding 0.10%, or K2C2O4 in an amount not so restricted, is used , there will be a performance benefit exceeding the K4EDTA alone, or with no more than 0.10% K2CO3. This is an additional embodiment of the invention.
The amount of the combined chelating agents should be about 0.5 to 15% of the K to K3EDTA, and the precipitating co-builder, about 0.1 to 15%, the ratio of the other to the other being about 10: 1 to 1 : 1.
On the other hand, when the combination of KiEDTA and an amount of precipitating co-builder are used, the K,EDTA should be about 0.5 to 15%, and the precipitating co-builder must exceed 0.1 , to about 15%, and especially preferably exceeds 1 %, the ratio of the first to the other being about 10:1 to 1:1.
4. Water and Miscellaneous
Since the cleaner is an aqueous cleaner with relatively low levels of actives, the principal ingredient is water, which should be present at a level of at least about 50%, more preferably at least about 80%, and most preferably, at least about 90%. Deionized water is preferred.
Small amounts of adjuncts can be added for improving cleaning performance or aesthetic qualities of the cleaner. For example, buffers could be added to maintain constant
pH (which for the invention is between about 7-14, more preferably between about 8-13). These buffers include NaOH, KOH, Na2CO3, K2CO3, as alkaline buffers, and phosphoric, hydrochloric, sulfuric acids as acidic buffers, and others. KOH is a preferred buffer since, in the invention, one way of obtaining potassium EDTA is to take the acidic EDTA acid and neutralize it with an appropriate, stoichiometric amount of KOH. Builders, such as phosphates, silicates, and again, carbonates, may be desirable. Further solubilizing materials, such as hydrotropes, e.g.s., cumene, toluene and xylene sulfonates, may also be desirable. Adjuncts for cleaning include additional surfactants, such as those described in Kirk-Othmer, Encyclopedia of Chemical Technology. 3rd Ed., Volume 22, pp. 332-432 (Marcel-Dekker, 1983), and McCutcheon's Soaps and Detergents (N. Amer. 1984), which are incorporated herein by reference. Aesthetic adjuncts include fragrances, such as those available from Givaudan, IFF, Quest, Sozio, Bush Boake and Allen, Firmenich, Dragoco and others, and dyes and pigments which can be solubilized or suspended in the formulation, such as diaminoanthraquinones. Water-insoluble solvents may sometimes be desirable as added grease or oily soil cutting agents. These types of solvents include tertiary alcohols, hydrocarbons (alkanes), pine-oil, d-limonene and other terpenes and terpene derivatives, and benzyl alcohols. However, it is less preferred to use propellants, such as in an aerosol formulation, since those usually involve solvents which are stringently regulated (too high VOC's) and will also raise materials costs of these formulations. Thickeners, such as calcium carbonate, sodium bicarbonate, aluminum oxide, and polymers, such as polyacrylate, starch, xanthan gum, alginates, guar gum, cellulose, and the like, may be desired additives. The use of some of these thickeners (CaCO3 or NaHCO3) is to be distinguished from their potential use as builders, generally by particle size or amount used. Further, small particle size solids can be used as abrasives (see co-pending application Serial No. , filed concurrently herewith, in the names of David Peterson et al., commonly assigned, and entitled "Low Odor, Hard Surface Abrasive Cleaner with Enhanced Soil Removal," incorporated herein by reference). Antifoaming agents, or foam controlling agents, may be also desirable, such as silicone defoamers. The amounts of these cleaning and aesthetic adjuncts should be in the range of 0-10%, more preferably 0-2%.
In the following Experimental section, the surprising performance benefits of the various aspects of the inventive cleaner are demonstrated.
EXPERIMENTAL In the following Examples, various embodiments of the invention are depicted, and soil removal performances of the inventive cleaners were conducted. Further, in the examples, where footnotes identify components and the components are repeated in further examples, the footnotes are not reiterated.
Artificial soils were prepared in accordance with standards developed by the American Society for Testing and Materials ("ASTM") and modified by Applicants. The bathroom soil was prepared according to ASTM standard No. D5343-93 (incorporated herein by reference). Soap scum soil consisted of a layer of calcium stearate ~ to which a blue pigment was added as an indicator for soil removal — baked onto a ceramic tile.
In these tests, soil removal is either visually measured, using a panel of experts who view soil removal on a 1 to 10 scale, with 10 being better, or, when using an automated assay, using a proprietary device to determine the cumulative amount of soil removed at each cycle, with a maximum of 10-100 cycles, depending on the test run. The higher score achieved is more preferred.
A first base formulation is depicted below:
TABLE I (Invention Example I)
'Solvent, Union Carbide
2Antimicrobial surfactant BTC 2125, Stepan, which can be optional
3c Surfactant, C12 amine oxide, Stepan
TABLE II (Comparison Example II - SN 08/731,653)
These formulas were then tested on bathroom soils loaded onto white tiles. The tiles were then cleaned with the proprietary device, with four replicates of 15 cycles each. The results are depicted below:
TABLE III (Soap Scum Soil Removal)
'Variation of inventive Example I, wherein a 2.5% excess KOH is added.
Commercial bathroom cleaning formulation, Clorox Company.
The above examples demonstrate that the inventive formulations I and III had comparable performance to that exhibited by the Parent, SN 08/731,653, which is not expected given the different species of chelant used.
In the next set of Examples below, the effect of increasing the precipitating co-builder is explored.
TABLE III (Inventive Formula, Example V)
'Barquat, from Lonza
Example V has a pH of about 7.7.
TABLE IV (Inventive Formula Variation, Example VI)
Example VI has a pH of about 10.1.
Using the soap scum test, Examples V and VI were tested for performance, in which tiles were coated with one coat of soap scum, then a discrete portion of the formulas were dropped onto the tiles and allowed to work for 60, 90 and 120 seconds, respectively, and graded by an expert panel on a 1 to 10 score, with 10 being best, and 1 being no cleaning. The results are tabulated in TABLE V:
TABLE V (Soap Scum Removal)
The results indicate that pH of the Examples may influence results. Thus, a further study was conducted. In this study, additional portions of KOH (neutralizing agent) were added to Examples V and VI, to result in pH's of 12.47 and 12.54, respectively. These were then tested against a commercial formulation which tracks Example II (KiEDTA) above.
TABLE VI (Soap Scum Removal)
This demonstrates that higher alkalinity can effect the performance of the invention positively.
In the next set of examples demonstrate another embodiment of the invention, namely K,EDTA combined with a precipitating co-builder, and when the co-builder is K2CO3, the amount of this latter ingredient must exceed 0.1 % and most preferably exceeds about 1.0%. The results are set forth in TABLE VII. The performance studies were using soap scum with one coat on tiles, four replicates.
TABLE VII
'Nonionic surfactant
2Solvent
Performance is expressed as relative % Soil Removal for 30 cycles.
The invention is further defined and delineated by the Claims which follow hereto.
Claims
1. An aqueous hard surface cleaner with improved soil removal comprising:
(a) an anionic, nonionic, amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, the total amount of said surfactant being present in a cleaning effective amount;
(b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C, said at least one organic solvent present in a solubilizing - or dispersion - effective amount;
(c) a combination of (i) an incompletely neutralized potassium ethylenediamine - tetraacetate (EDTA) and (ii) a precipitating co-builder as chelating agents present in an amount effective to enhance soil removal in said cleaner; and
(d) the remainder, water.
2. The cleaner of Claim 1 which comprises a single phase, isotropic solution.
3. The cleaner of Claim 1 wherein said surfactant is an anionic surfactant of (a), which further comprises a linear or branched .,4 alkylbenzene sulfonate, alkane sulfonate, alkyl sulfate, and mixtures thereof.
4. The cleaner of Claim 1 wherein said surfactant of (a) is a nonionic surfactant, which further comprises an alkoxylated alkylphenol ether, an alkoxylated alcohol, or a semi-polar nonionic surfactant.
5. The cleaner of Claim 4 wherein said nonionic surfactant is a semi -polar nonionic surfactant selected from the group consisting of mono-long-chain alkyl, di-short-chain trialkyl amine oxides, alkylamidodialkyl amine oxides, phosphine oxides and sulfoxides.
6. The cleaner of Claim 5 wherein said nonionic surfactant of (a) is a mono-long-chain, di-short-chain trialkyl amine oxide.
7. The cleaner of Claim 4 wherein said nonionic surfactant is an ethoxylated alkylphenol ether selected from the group consisting of ethoxylated octylphenol ethers, ethoxylated nonylphenol ethers, and mixtures thereof.
8. The cleaner of Claim 7 wherein said nonionic surfactant is an ethoxylated octylphenol, ethoxylated with 1-10 moles of ethylene oxide.
9. The cleaner of Claim 1 wherein said organic solvent of (b) is selected from the group consisting of alkanols, diols, glycol ethers, and mixtures thereof.
10. The cleaner of Claim 9 wherein said organic solvent is a C]_24 glycol ether.
11. The cleaner of Claim 1 further comprising d) a quaternary ammonium compound.
12. The cleaner of Claim 11 wherein said quaternary ammonium compound is selected from the group consisting of mono-long-chain, tri-short-chain, tetraalkyl ammonium compounds, di-long-chain, di-short-chain tetra-alkyl ammonium compounds, trialkyl, mono-benzyl ammonium compounds, and mixtures thereof.
13. The cleaner of claim 1 further comprising (e) at least one adjunct selected from the group consisting of builders, buffers, fragrances, thickeners, dyes, abrasives, oxidants, pigments, foaming stabilizers, water-insoluble organic solvents, and hydrotropes.
14. The cleaner of claim 1 wherein said incompletely neutralized EDTA of c)(i) is prepared by neutralizing the acid form of EDTA with a potassium salt.
15. The cleaner of claim 14 wherein the neutralizing agent is potassium hydroxide.
16. The cleaner of claim 15 wherein said potassium hydroxide is present in a less than stoichiometric amount.
17. The cleaner of claim 14 wherein the precipitating builder of c)(ii) is potassium carbonate or potassium oxalate.
18. A method for removing a soil from a hard surface, said method comprising applying to said soil a hard surface cleaner which comprises: (a) either an anionic, nonionic, amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, the total amount of said surfactant being present in a cleaning effective amount;
(b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C, said at least one organic solvent present in a solubilizing or dispersion - effective amount;
(c) a combination of (i) an incompletely neutralized potassium ethylenediamine - tetraacetate (EDTA) and (ii) a precipitating co-builder as chelating agents present in an amount effective to enhance soil removal in said cleaner; and
(d) the remainder, water.
19. The method of Claim 18 further comprising removing said soil and said cleaner from said surface.
20. An aqueous hard surface cleaner with improved soil removal comprising:
(a) an anionic, nonionic, amphoteric surfactant, and mixtures thereof with optionally, a quaternary ammonium surfactant, the total amount of said surfactant being present in a cleaning effective amount;
(b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25°C, said at least one organic solvent present in a solubilizing - or dispersion - effective amount;
(c) a combination of (i) tetrapotassium ethylenediamine - tetraacetate (EDTA) and (ii) a precipitating co-builder as chelating agents present in an amount effective to enhance soil removal in said cleaner, wherein when the co-builder is potassium carbonate, the amount thereof must exceed 0.1 wt.%; and
(d) the remainder, water.
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US09/427,175 | 1999-10-25 |
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1999
- 1999-10-25 US US09/427,175 patent/US6245728B1/en not_active Expired - Lifetime
-
2000
- 2000-10-13 WO PCT/US2000/028404 patent/WO2001030950A1/en active Application Filing
- 2000-10-13 AU AU12034/01A patent/AU1203401A/en not_active Abandoned
- 2000-10-23 AR ARP000105577A patent/AR026214A1/en not_active Application Discontinuation
- 2000-10-24 CO CO00080796A patent/CO5231240A1/en not_active Application Discontinuation
-
2001
- 2001-05-18 US US09/861,049 patent/US6399555B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5814591A (en) * | 1996-04-12 | 1998-09-29 | The Clorox Company | Hard surface cleaner with enhanced soil removal |
US5948741A (en) * | 1996-04-12 | 1999-09-07 | The Clorox Company | Aerosol hard surface cleaner with enhanced soil removal |
US5948742A (en) * | 1996-04-12 | 1999-09-07 | The Clorox Company | Aerosol hard surface cleaner with enhanced bathroom soil removal |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US7060661B2 (en) | 1997-12-19 | 2006-06-13 | Akzo Nobel N.V. | Acid thickeners and uses thereof |
US7776798B2 (en) | 1999-09-07 | 2010-08-17 | Akzo Nobel Surface Chemistry Llc | Quaternary ammonium salts as thickening agents for aqueous systems |
CN109517673A (en) * | 2018-11-16 | 2019-03-26 | 太原理工大学 | Enzyme without phosphorus clothing powder detergent of one kind and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
US6399555B2 (en) | 2002-06-04 |
AU1203401A (en) | 2001-05-08 |
US20010049347A1 (en) | 2001-12-06 |
AR026214A1 (en) | 2003-01-29 |
CO5231240A1 (en) | 2002-12-27 |
US6245728B1 (en) | 2001-06-12 |
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