US20050145711A1 - Air-freshening device - Google Patents
Air-freshening device Download PDFInfo
- Publication number
- US20050145711A1 US20050145711A1 US10/505,819 US50581905A US2005145711A1 US 20050145711 A1 US20050145711 A1 US 20050145711A1 US 50581905 A US50581905 A US 50581905A US 2005145711 A1 US2005145711 A1 US 2005145711A1
- Authority
- US
- United States
- Prior art keywords
- air
- fragrance
- freshening device
- composition
- film
- 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
Links
- 239000003205 fragrance Substances 0.000 claims abstract description 99
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000008346 aqueous phase Substances 0.000 claims abstract description 15
- 239000012071 phase Substances 0.000 claims abstract description 15
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 62
- -1 polytetramethylene Polymers 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- 239000012080 ambient air Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 229920001451 polypropylene glycol Polymers 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 6
- 239000002386 air freshener Substances 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 229920002647 polyamide Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- GLZPCOQZEFWAFX-UHFFFAOYSA-N Geraniol Chemical compound CC(C)=CCCC(C)=CCO GLZPCOQZEFWAFX-UHFFFAOYSA-N 0.000 description 4
- 150000001299 aldehydes Chemical class 0.000 description 4
- SESFRYSPDFLNCH-UHFFFAOYSA-N benzyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1=CC=CC=C1 SESFRYSPDFLNCH-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000003349 gelling agent Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229920002614 Polyether block amide Polymers 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 3
- 238000013270 controlled release Methods 0.000 description 3
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000000546 pharmaceutical excipient Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- QUMXDOLUJCHOAY-UHFFFAOYSA-N 1-Phenylethyl acetate Chemical compound CC(=O)OC(C)C1=CC=CC=C1 QUMXDOLUJCHOAY-UHFFFAOYSA-N 0.000 description 2
- PETRWTHZSKVLRE-UHFFFAOYSA-N 2-Methoxy-4-methylphenol Chemical compound COC1=CC(C)=CC=C1O PETRWTHZSKVLRE-UHFFFAOYSA-N 0.000 description 2
- RXGUIWHIADMCFC-UHFFFAOYSA-N 2-Methylpropyl 2-methylpropionate Chemical compound CC(C)COC(=O)C(C)C RXGUIWHIADMCFC-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- ZPVFWPFBNIEHGJ-UHFFFAOYSA-N 2-octanone Chemical compound CCCCCCC(C)=O ZPVFWPFBNIEHGJ-UHFFFAOYSA-N 0.000 description 2
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 description 2
- IKDIJXDZEYHZSD-UHFFFAOYSA-N 2-phenylethyl formate Chemical compound O=COCCC1=CC=CC=C1 IKDIJXDZEYHZSD-UHFFFAOYSA-N 0.000 description 2
- XPCTZQVDEJYUGT-UHFFFAOYSA-N 3-hydroxy-2-methyl-4-pyrone Chemical compound CC=1OC=CC(=O)C=1O XPCTZQVDEJYUGT-UHFFFAOYSA-N 0.000 description 2
- OIGWAXDAPKFNCQ-UHFFFAOYSA-N 4-isopropylbenzyl alcohol Chemical compound CC(C)C1=CC=C(CO)C=C1 OIGWAXDAPKFNCQ-UHFFFAOYSA-N 0.000 description 2
- OZJPLYNZGCXSJM-UHFFFAOYSA-N 5-valerolactone Chemical compound O=C1CCCCO1 OZJPLYNZGCXSJM-UHFFFAOYSA-N 0.000 description 2
- XPPALVZZCMPTIV-ONEGZZNKSA-N 6-[(z)-pent-2-enyl]oxan-2-one Chemical compound CC\C=C\CC1CCCC(=O)O1 XPPALVZZCMPTIV-ONEGZZNKSA-N 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- SCCDQYPEOIRVGX-UHFFFAOYSA-N Acetyleugenol Chemical compound COC1=CC(CC=C)=CC=C1OC(C)=O SCCDQYPEOIRVGX-UHFFFAOYSA-N 0.000 description 2
- HVJKZICIMIWFCP-UHFFFAOYSA-N Benzyl 3-methylbutanoate Chemical compound CC(C)CC(=O)OCC1=CC=CC=C1 HVJKZICIMIWFCP-UHFFFAOYSA-N 0.000 description 2
- UYWQUFXKFGHYNT-UHFFFAOYSA-N Benzylformate Chemical compound O=COCC1=CC=CC=C1 UYWQUFXKFGHYNT-UHFFFAOYSA-N 0.000 description 2
- DZNVIZQPWLDQHI-UHFFFAOYSA-N Citronellyl formate Chemical compound O=COCCC(C)CCC=C(C)C DZNVIZQPWLDQHI-UHFFFAOYSA-N 0.000 description 2
- PXIKRTCSSLJURC-UHFFFAOYSA-N Dihydroeugenol Chemical compound CCCC1=CC=C(O)C(OC)=C1 PXIKRTCSSLJURC-UHFFFAOYSA-N 0.000 description 2
- ZFMSMUAANRJZFM-UHFFFAOYSA-N Estragole Chemical compound COC1=CC=C(CC=C)C=C1 ZFMSMUAANRJZFM-UHFFFAOYSA-N 0.000 description 2
- LHXDLQBQYFFVNW-UHFFFAOYSA-N Fenchone Chemical compound C1CC2(C)C(=O)C(C)(C)C1C2 LHXDLQBQYFFVNW-UHFFFAOYSA-N 0.000 description 2
- JUWUWIGZUVEFQB-UHFFFAOYSA-N Fenchyl acetate Chemical compound C1CC2C(C)(C)C(OC(=O)C)C1(C)C2 JUWUWIGZUVEFQB-UHFFFAOYSA-N 0.000 description 2
- CYHBDKTZDLSRMY-UHFFFAOYSA-N Hexyl 2-methylpropanoate Chemical compound CCCCCCOC(=O)C(C)C CYHBDKTZDLSRMY-UHFFFAOYSA-N 0.000 description 2
- UUGLJVMIFJNVFH-UHFFFAOYSA-N Hexyl benzoate Chemical compound CCCCCCOC(=O)C1=CC=CC=C1 UUGLJVMIFJNVFH-UHFFFAOYSA-N 0.000 description 2
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- XXIKYCPRDXIMQM-UHFFFAOYSA-N Isopentenyl acetate Chemical compound CC(C)=CCOC(C)=O XXIKYCPRDXIMQM-UHFFFAOYSA-N 0.000 description 2
- BTJXBZZBBNNTOV-UHFFFAOYSA-N Linalyl benzoate Chemical compound CC(C)=CCCC(C)(C=C)OC(=O)C1=CC=CC=C1 BTJXBZZBBNNTOV-UHFFFAOYSA-N 0.000 description 2
- FHLGUOHLUFIAAA-UHFFFAOYSA-N Linalyl butyrate Chemical compound CCCC(=O)OC(C)(C=C)CCC=C(C)C FHLGUOHLUFIAAA-UHFFFAOYSA-N 0.000 description 2
- JZIARAQCPRDGAC-UHFFFAOYSA-N Linalyl isobutyrate Chemical compound CC(C)C(=O)OC(C)(C=C)CCC=C(C)C JZIARAQCPRDGAC-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CRZQGDNQQAALAY-UHFFFAOYSA-N Methyl benzeneacetate Chemical compound COC(=O)CC1=CC=CC=C1 CRZQGDNQQAALAY-UHFFFAOYSA-N 0.000 description 2
- UUQHKWMIDYRWHH-UHFFFAOYSA-N Methyl beta-orcinolcarboxylate Chemical group COC(=O)C1=C(C)C=C(O)C(C)=C1O UUQHKWMIDYRWHH-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- MOYAFQVGZZPNRA-UHFFFAOYSA-N Terpinolene Chemical compound CC(C)=C1CCC(C)=CC1 MOYAFQVGZZPNRA-UHFFFAOYSA-N 0.000 description 2
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 description 2
- KGEKLUUHTZCSIP-HOSYDEDBSA-N [(1s,4s,6r)-1,7,7-trimethyl-6-bicyclo[2.2.1]heptanyl] acetate Chemical compound C1C[C@]2(C)[C@H](OC(=O)C)C[C@H]1C2(C)C KGEKLUUHTZCSIP-HOSYDEDBSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- IGODOXYLBBXFDW-UHFFFAOYSA-N alpha-Terpinyl acetate Chemical compound CC(=O)OC(C)(C)C1CCC(C)=CC1 IGODOXYLBBXFDW-UHFFFAOYSA-N 0.000 description 2
- LRVLBFSVAFUOGO-UHFFFAOYSA-N amyl phenylacetate Chemical compound CCCCCOC(=O)CC1=CC=CC=C1 LRVLBFSVAFUOGO-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 229960002903 benzyl benzoate Drugs 0.000 description 2
- AKGGYBADQZYZPD-UHFFFAOYSA-N benzylacetone Chemical compound CC(=O)CCC1=CC=CC=C1 AKGGYBADQZYZPD-UHFFFAOYSA-N 0.000 description 2
- CRPUJAZIXJMDBK-UHFFFAOYSA-N camphene Chemical compound C1CC2C(=C)C(C)(C)C1C2 CRPUJAZIXJMDBK-UHFFFAOYSA-N 0.000 description 2
- BQOFWKZOCNGFEC-UHFFFAOYSA-N carene Chemical compound C1C(C)=CCC2C(C)(C)C12 BQOFWKZOCNGFEC-UHFFFAOYSA-N 0.000 description 2
- ULDHMXUKGWMISQ-UHFFFAOYSA-N carvone Chemical compound CC(=C)C1CC=C(C)C(=O)C1 ULDHMXUKGWMISQ-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- NEHNMFOYXAPHSD-UHFFFAOYSA-N citronellal Chemical compound O=CCC(C)CCC=C(C)C NEHNMFOYXAPHSD-UHFFFAOYSA-N 0.000 description 2
- QMVPMAAFGQKVCJ-UHFFFAOYSA-N citronellol Chemical compound OCCC(C)CCC=C(C)C QMVPMAAFGQKVCJ-UHFFFAOYSA-N 0.000 description 2
- JOZKFWLRHCDGJA-UHFFFAOYSA-N citronellol acetate Chemical compound CC(=O)OCCC(C)CCC=C(C)C JOZKFWLRHCDGJA-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical group 0.000 description 2
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- TVQGDYNRXLTQAP-UHFFFAOYSA-N ethyl heptanoate Chemical compound CCCCCCC(=O)OCC TVQGDYNRXLTQAP-UHFFFAOYSA-N 0.000 description 2
- SHZIWNPUGXLXDT-UHFFFAOYSA-N ethyl hexanoate Chemical compound CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 2
- WDAXFOBOLVPGLV-UHFFFAOYSA-N ethyl isobutyrate Chemical compound CCOC(=O)C(C)C WDAXFOBOLVPGLV-UHFFFAOYSA-N 0.000 description 2
- BYEVBITUADOIGY-UHFFFAOYSA-N ethyl nonanoate Chemical compound CCCCCCCCC(=O)OCC BYEVBITUADOIGY-UHFFFAOYSA-N 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- CBOQJANXLMLOSS-UHFFFAOYSA-N ethyl vanillin Chemical compound CCOC1=CC(C=O)=CC=C1O CBOQJANXLMLOSS-UHFFFAOYSA-N 0.000 description 2
- RRAFCDWBNXTKKO-UHFFFAOYSA-N eugenol Chemical compound COC1=CC(CC=C)=CC=C1O RRAFCDWBNXTKKO-UHFFFAOYSA-N 0.000 description 2
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- HIGQPQRQIQDZMP-DHZHZOJOSA-N geranyl acetate Chemical compound CC(C)=CCC\C(C)=C\COC(C)=O HIGQPQRQIQDZMP-DHZHZOJOSA-N 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- LHGVFZTZFXWLCP-UHFFFAOYSA-N guaiacol Chemical compound COC1=CC=CC=C1O LHGVFZTZFXWLCP-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- XAOGXQMKWQFZEM-UHFFFAOYSA-N isoamyl propanoate Chemical compound CCC(=O)OCCC(C)C XAOGXQMKWQFZEM-UHFFFAOYSA-N 0.000 description 2
- ZYTMANIQRDEHIO-KXUCPTDWSA-N isopulegol Chemical compound C[C@@H]1CC[C@@H](C(C)=C)[C@H](O)C1 ZYTMANIQRDEHIO-KXUCPTDWSA-N 0.000 description 2
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- UWKAYLJWKGQEPM-LBPRGKRZSA-N linalyl acetate Chemical compound CC(C)=CCC[C@](C)(C=C)OC(C)=O UWKAYLJWKGQEPM-LBPRGKRZSA-N 0.000 description 2
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- VSMOENVRRABVKN-UHFFFAOYSA-N oct-1-en-3-ol Chemical compound CCCCCC(O)C=C VSMOENVRRABVKN-UHFFFAOYSA-N 0.000 description 2
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- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- KRIOVPPHQSLHCZ-UHFFFAOYSA-N propiophenone Chemical compound CCC(=O)C1=CC=CC=C1 KRIOVPPHQSLHCZ-UHFFFAOYSA-N 0.000 description 2
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- 235000013769 triethyl citrate Nutrition 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
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- JEEUACXJJPNYOL-UHFFFAOYSA-N (2-methoxy-4-prop-2-enylphenyl) 2-phenylacetate Chemical compound COC1=CC(CC=C)=CC=C1OC(=O)CC1=CC=CC=C1 JEEUACXJJPNYOL-UHFFFAOYSA-N 0.000 description 1
- ZXFNOEJFYLQUSB-UHFFFAOYSA-N (2-methyl-4-phenylbutan-2-yl) acetate Chemical compound CC(=O)OC(C)(C)CCC1=CC=CC=C1 ZXFNOEJFYLQUSB-UHFFFAOYSA-N 0.000 description 1
- DCXXKSXLKWAZNO-UHFFFAOYSA-N (2-methyl-6-methylideneoct-7-en-2-yl) acetate Chemical compound CC(=O)OC(C)(C)CCCC(=C)C=C DCXXKSXLKWAZNO-UHFFFAOYSA-N 0.000 description 1
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- 230000002459 sustained effect Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
- A61L9/12—Apparatus, e.g. holders, therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
Definitions
- the invention relates to a fragrance composition for the controlled release of volatile substances into the ambient air, and to air-freshening devices containing the same.
- fragrance release systems which provide a pleasant, natural aroma during a long period of time, e.g. 4 to 6 weeks, without significant changes of the fragrance strength and/or fragrance character during usage.
- Gel compositions to control the degree of fragrance release from air-freshening devices are known.
- One of the first gels has been made from seaweed extracts, e.g. carrageenan.
- these gels can hold only a relatively small concentration of fragrance oils and have poor fragrance-release characteristics.
- the European Patent Application No. 0 631 788 discloses a gel-like fragrance composition which comprises an aqueous gel comprising an aqueous fluid and a gelling agent incorporated in an oil-absorbable resin carrying a fragrant material. It is stated therein that it is possible to achieve a well-balanced volatile emission for a long period, independently of the perfume character.
- These aqueous gel compositions may contain up to 20% by weight of a fragrant material.
- U.S. Pat. No. 5,643,866 discloses a crystal clear, self-supporting, highly concentrated gel, comprising fragrance oils, glycols and dibenzylidene sorbitol acetal (DBSA) as gelling agent. Said gels can be loaded up to 80% with fragrance oils.
- U.S. Pat. No. 5,780,527 discloses a rigid dry and transparent gel obtained by reacting, in the presence of a fragrance composition, a liquid polymeric material with a cross-linking agent.
- Non-gel like fragrance compositions are widespread in combination with electrical heated vapour dispensing devices, or in combination with other means, e.g. a wick, to control the release of the fragrance.
- a solvent is used to support the controlled release of the fragrance.
- the European Patent Application No. 1 078 640 describes a single-phase aqueous air freshening composition comprising 30% to 60% glycol ethers used in an air freshener device comprising a wick.
- the invention provides an air-freshening device comprising a container having an open end, the container holding a composition comprising an aqueous phase, and a hydrophobic phase comprising a fragrance, and said open end is covered by a breathable film which permits of egress of the fragrance and water-vapour.
- the addition of water to a fragrance not only influences the life-cycle of the air-freshening device but also is important for the essentially continuous release of the fragrance.
- the air-freshener device permits of strong fragrance release and the character of the released fragrance does not substantially alter over a long period of time, e.g. 4 to 6 weeks.
- the present of water influences the impact and quality of the released fragrance and leads to higher evaporation profile measured by the weight lost of the product over a time period of use as is more specifically illustrated in the examples.
- the rate of evaporation and therefore the life-cycle of the air-freshening device may be varied depending on the ratio of water to fragrance.
- the weight ratio between water to fragrance is about 9:1 to about 1:9, more preferably about 7:3 to about 3:7, most preferably 4:1 to about 2:3.
- the strength of a fragrance can be evaluated by the measurement of the odour value, or by sniffing.
- the odour value of a fragrance material is defined as the ratio of the vapour pressure and its mean odour threshold concentration.
- the odour threshold concentration can be measured by standard methods, for example described by ASTM E679-91. To calculate the odour value of a fragrance composition the vapour pressure and odour threshold concentration of the fragrance has to be determined. Because of the time-consuming and elaborate nature of methods to determine the odour value the analysis of the fragrance strength by sniffing is preferred, as is well known in the perfumery arts.
- the character of a fragrance relies on the contribution of all components of a fragrance through evaporation. Highly volatile fragrance components (so-called Top Notes ) are responsible for the initial impression of a fragrance. Less volatile fragrance components (so-called Middle Notes , also known as Heart Notes , and so-called Bottom Notes , also known as Base Notes ) are responsible for the long-lasting impression of a fragrance.
- a fragrance's character depends on the harmonisation of Top Note, Middle Note, and Bottom Note. Clearly, it is highly desired that the released fragrance character does not significantly change during use of an air-freshening device over a prolonged period of time.
- the air-freshener devices of the present invention may permit substantially the same ease of passage to all fragrance ingredients irrespective of their physicochemical properties such as volatility and thus leads to the balanced nature of the fragrance emitted from the device. Without wishing to be bound by any theory applicant believes that due to the addition of water to the fragrance the developed water-vapour in a headspace of the device acts as a carrier for the fragrance to pass through the breathable film irrespective of their volatility.
- breathable film means a polymeric film that allows water-vapour, but not water in the liquid phase, to pass through it.
- breathable films There are two different classes of breathable films known namely micro-porous films and monolithic films.
- Micro-porous films are such films with small pores that permit passage of water-vapour. Typically, they comprises micropores having pore sizes of e.g. down to about 10 ⁇ m. The small size of the pores prevents the penetration of liquid phase water across the film, but the interconnected pore structure allows the transmission of water-vapour.
- Micro-porous films may be made from, e.g. polyolefins, polytetrafluoroethylenes (PTFE) and precipitated polyurethanes.
- Monolithic films are based on copolymers having so called hard and soft segments.
- the hard segments may be polyesters, for example glycol, propanediol or butanediol units and dicarboxylic acid units connected by ester functional groups; polyurethanes; or polyamides, for example polyamid 6 (PA-6), polyamid 11 (PA-11), or polyamid 12 (PA-12).
- the soft segments responsible for the water-vapour transmission, may be formed by polyether units, for example polyethylene glycol (PEG), polypropylene glycol (PPG) or polytetramethylene glycol (PTMG) or mixtures thereof, and dicarboxylic acids, such as, for example terephtalic acid.
- Monolithic films based on polyester block hard segments are described in U.S. Pat. Nos. No. 5,800,928, 4,725,481, and 6,001,464; Monolithic films based on polyurethane hard segments are described in U.S. Pat. Nos. 5,800,928 and 6,001,464; Monolithic films based on polyamide hard segments are described in U.S. Pat. Nos. 5,800,928 and 5,506,024; all of which are incorporated herein by reference.
- the molecular weight of the soft segment is preferably between 600 and 4000 g/mol.
- the glass transition temperature is preferably below 0° C.
- the amount of the soft segment may vary widely depending on the particular properties desired. However, in a preferred embodiment the amount of the soft segment may be between 15% and 40% by weight of the film, preferably between 20% and 30% by weight.
- the soft segment formed by polypropylene glycol is preferred. Most preferred are soft segments formed by polyethylene glycol, or a mixture of polyethylene glycol and polypropylene glycol.
- monolithic breathable films examples include poly(ether-co-amide), e.g. PEBAX® by Atofina and poly(ether-co-ester), e.g. HYTREL®60 by DuPont.
- breathability is meant the water-vapour transmission rate (WVT) or water-vapour permeability (WVP).
- WVT water-vapour transmission rate
- WVP water-vapour permeability
- ASTM E96 and DIN 53 122 A variety of test methods have been developed to measure this property, for example ASTM E96 and DIN 53 122. Although most standard methods are of similar concept there are variables, e.g. temperature and relative humidity of the test environment, the principle of the test method, i.e. upright dish water method, upright dish desiccant method, inverted cup method, and inverted water method, that have an influence on the calculated water-vapour transmission rate. Consequently, the results from different methods are not directly comparable.
- the breathable film according to the present invention preferably may have a thickness from about 10 ⁇ m to about 50 ⁇ m more preferred from 15 ⁇ m to about 40 ⁇ m.
- the container according to the present invention may be made of any material that is commonly used for air-freshener devices, e.g. glass or plastic. Such materials are preferred, which are stable in the presence of fragrance materials, e.g. essential oils.
- the container may be of any shape or configuration subject to it having an open end and capable of receiving aqueous and oil phases.
- the upper liquid surface does not abut the surface of the breathable film. Rather, in a preferred embodiment there should be a space between the upper surface of the liquid phase and the lower surface of the breathable film in which a head-space of fragrance and water-vapour may develop. This space is preferably not greater than 8 cm, more preferably not greater than 3 cm, for example between 1 cm and 2 cm, most preferably not greater than 1 cm.
- the breathable film may be attached to the container in a sealed relationship utilising any conventional means, such as an adhesive, heat seal or the like. Such means are preferred which form a strong bond between the film and the container to avoid the leakage of the liquid composition.
- the hydrophobic phase according to the present invention consists of fragrance.
- a fragrance according to the present invention is a mixture of fragrance materials selected from such classes as acids, esters, alcohols, aldehydes, ketones, lactones, nitriles, ethers, acetates, hydrocarbons, sulfur- nitrogen- and oxygen-containing heterocyclic, polycyclic and macrocyclic compounds, as well essential oils of natural or synthetic origin.
- fragrance materials are described, for example, in S. Arctander Perfume Flavors and Chemicals Vols. 1 and 2, Arctander, Montclair, N.J. USA 1969.
- the fragrance optionally may comprise odourless liquids such as dipropylene glycol, propylene glycol, diethylphtalate, benzyl benzoate, triethylcitrate, isopropylmyristate, carbitol, and hexylene glycol, or mixtures thereof.
- odourless liquids such as dipropylene glycol, propylene glycol, diethylphtalate, benzyl benzoate, triethylcitrate, isopropylmyristate, carbitol, and hexylene glycol, or mixtures thereof.
- the fragrance comprises not more than 20% by weight of these liquids.
- a fragrance may contain residual water either due to the presence of a solvent or due to the production process.
- composition according to the present invention comprises more than 10% by weight of water, more preferably more than 25% by weight, most preferably between 50% and 90% by weight of water.
- a composition comprising 95% by weight of water or even more, e.g. 98%, may also be used to form a composition according to the present invention.
- the hydrophobic phase may comprise a lipophilic dye, for example Puricolor® blue FBL5, Puricolor® blue ABL9, Puricolor® green U3 or Puricolor® yellow AYE23 from Ciba.
- a lipophilic dye for example Puricolor® blue FBL5, Puricolor® blue ABL9, Puricolor® green U3 or Puricolor® yellow AYE23 from Ciba.
- fragrances are preferred comprising a high amount of fragrance material having a vapour pressure greater than 1000 ⁇ g/l.
- fragrance materials are classified as Top Notes and may be selected from acetate C6 hexylic, acetophenone, alcohol C6 hexylic, aldehyde C7 heptylic, aldehyde C9 isononylic, allyl caproate, allyl oenanthate, amyl butyrate, amyl vinyl carbinol, anapear, benzaldehyde, benzyl formate, benzyl methyl ether, bornyl acetate liquid, butyl acetate, camphene, carbitol, citronellal, cresyl methyl ether para, cyclal C, cymene para, decenal-4-trans, delta-3 carene, diethyl malonate, dihydro anethole, dihydro myrcenol,
- Fragrance materials having a vapour pressure between 10 ⁇ l/l and 1000 ⁇ g/l are classified as Middle Notes and may be selected from acetal E, acetal R, acetanisole, adoxal, agrumex, alcohol C10 decylic, alcohol C11 undecylenic, alcohol C12 lauric, alcohol C8 octylic, alcohol C9 nonylic, aldehyde C11 undecylenic, aldehyde C11 undecylic, aldehyde C12 lauric, aldehy, aldehyde iso C11, allyl amyl glycolate, allyl cyclohexyl propionate, ambrinol, amyl benzoate, amyl caproate, amyl cinnamic aldehyde, amyl phenyl acetate, amyl salicylate, anethole synthetic, anisyl acetate, anisyl alcohol, anther,
- Fragrance materials having a vapour pressure below 10 ⁇ g/l are classified as Bottom Notes and may be selected from 2-benzyl-4-methanol-1,3-dioxolane, aldrone, ambrettolide, ambroxan, benzophenone, benzyl benzoate, benzyl cinnamate, benzyl phenyl acetate, cepionate, cetalox, citronellyl ethoxalate, civettone, cresyl caprylate para, cresyl phenyl acetate para, cyclohexal, diethyl phthalate, dione, dodecalactone delta, dodecalactone gamma, ethyl maltol, ethyl vanillin, ethylene brassylate, eugenyl phenyl acetate, evernyl, fixolide, florhydral, galaxolide, geranyl phenyl acetate,
- fragrances are preferred comprising from about 15% to about 80% by weight Top Notes , more preferably from about 25% to about 60% by weight.
- the aqueous phase according to the present invention may be water, for example distilled water.
- Other excipients optionally present in the aqueous phase are salts, for example sodium chloride and magnesium sulfate to minimize the migration of water soluble fragrance materials.
- Other excipients, e.g. water soluble dyes may also be present in the aqueous phase.
- the device may have fitted over the container and the breathable film, a non-breathable material, such as an aluminium foil, polyolefine films, ethylene acrylic acid copolymer films, polyethylene terephtalate films, or ethylen vinyl acetate films, which may be easily removed prior to use.
- a non-breathable material such as an aluminium foil, polyolefine films, ethylene acrylic acid copolymer films, polyethylene terephtalate films, or ethylen vinyl acetate films, which may be easily removed prior to use.
- the composition held in the container comprises an upper hydrophobic phase comprising a fragrance, and a lower aqueous phase.
- composition comprising the hydrophobic phase and the aqueous phase is provided as an emulsion.
- the emulsion may optionally comprise a surfactant such as for example non-ionic surfactants, e.g. Neodol 91-8 from Shell Chemicals and Cremophor RH40 from BASF.
- a surfactant such as for example non-ionic surfactants, e.g. Neodol 91-8 from Shell Chemicals and Cremophor RH40 from BASF.
- fragrance compositions may comprise excipients such as dyes and UV-absorbers.
- the container may be filled in a first step with the aqueous phase followed by adding on top of the aqueous phase the hydrophobic phase. If the hydrophobic phase and the aqueous phase is provided as an emulsion, in a first step both phases may be prepared separately and then mixed together to form an emulsion, according to a process well known in the art, followed by filling the resulting emulsion into the container. After filling the container the open end of the container is covered by the breathable film, which itself might be covered by a removable impermeable film for storage.
- a fragrance composition having citrus and spicy top notes with floral and middle notes and ambery and musky bottom notes was used in all examples.
- Comparative Product A Liquid Fragrance Composition Comprising a Cellulose Wick
- Blend under stirring at room temperature 8.0 g fragrance and 8.0 g of Neodol (manufactured by Shell). Then, add 34 g water, 25 g dipropyleneglycolmethyleter, and 25 g ethyl alcohol. Stir until the solution becomes clear. Pour 70 g of the solution into a glass container and insert a wick, made of cellulose in the middle of the container. The one end of the wick is in contact with the solution and the other end of it is in contact with the ambient air to supply the ambient air with fragrance.
- Comparative Product B Solid Gel Fragrance Composition Comprising a Gelling Agent
- Product A, B, and C were evaluated in booths.
- the fragrance strength of Product C is at all stages better than the fragrance strength of the comparison products, i.e. the wick system (Comp. Product A) permits at each age of the product only a weak egress of the fragrance and the gel system (Comp. Product B) releases a strong fragrance up to one week but the strength of the fragrance decreases over the period of time and was described to be weak after 4 weeks.
- the concentration of the Top Notes decreases markedly for the comparative products, i.e. the wick system (Product A) and the gel system (Product B), whereas the concentration of the Top Notes remains very high for Product C during the evaluation period of 4 weeks.
- Mixture A, B, C and D were evaluated by an expert panel in terms of strength and quality and resulted in the following ranking: Mixture D was better than Mixture C and Mixture C was better than Mixture B. The weakest was mixture A. If no water is added, Mixture A, the fragrance performance is very weak.
Abstract
An air-freshening device comprising a container open at one end, containing an aqueous phase and a hydrophobic phase comprising a volatile material, preferably a fragrance, and covering said open end a breathable film. Aforementioned air-freshening devices may also find use in combination with electrical heating vapour dispensing devices.
Description
- The invention relates to a fragrance composition for the controlled release of volatile substances into the ambient air, and to air-freshening devices containing the same.
- There is an increasing demand for fragrance release systems, which provide a pleasant, natural aroma during a long period of time, e.g. 4 to 6 weeks, without significant changes of the fragrance strength and/or fragrance character during usage.
- Gel compositions to control the degree of fragrance release from air-freshening devices are known. One of the first gels has been made from seaweed extracts, e.g. carrageenan. However, these gels can hold only a relatively small concentration of fragrance oils and have poor fragrance-release characteristics. The European Patent Application No. 0 631 788 discloses a gel-like fragrance composition which comprises an aqueous gel comprising an aqueous fluid and a gelling agent incorporated in an oil-absorbable resin carrying a fragrant material. It is stated therein that it is possible to achieve a well-balanced volatile emission for a long period, independently of the perfume character. These aqueous gel compositions may contain up to 20% by weight of a fragrant material. In the last years, other gelling agents that are able to hold much higher concentrations of fragrance oils have been used. The U.S. Pat. No. 5,643,866 discloses a crystal clear, self-supporting, highly concentrated gel, comprising fragrance oils, glycols and dibenzylidene sorbitol acetal (DBSA) as gelling agent. Said gels can be loaded up to 80% with fragrance oils. U.S. Pat. No. 5,780,527 discloses a rigid dry and transparent gel obtained by reacting, in the presence of a fragrance composition, a liquid polymeric material with a cross-linking agent.
- Non-gel like fragrance compositions are widespread in combination with electrical heated vapour dispensing devices, or in combination with other means, e.g. a wick, to control the release of the fragrance. Typically, a solvent is used to support the controlled release of the fragrance. For example the European Patent Application No. 1 078 640 describes a single-phase aqueous air freshening composition comprising 30% to 60% glycol ethers used in an air freshener device comprising a wick.
- Several devices for perfuming ambient air having a sheet of permeable polymeric material are described, for example in
EP 0 093 262, U.S. Pat. No. 5,788,155 and EP 1 082 969. The prior art is silent on the nature of the fragrance containing composition and the effect that this may have on the performance of fragrance release. - There remains a need to provide air-freshener systems that are both aesthetically pleasing in design and which give still improved fragrance release in terms of duration and fragrance quality. We however made the surprising discovery that a breathable film performs very well in combination with a composition comprising an aqueous phase, and a hydrophobic phase containing the fragrance, in delivering a quantity of fragrance into the ambient air in a controlled and sustained manner.
- Therefore, in a first aspect, the invention provides an air-freshening device comprising a container having an open end, the container holding a composition comprising an aqueous phase, and a hydrophobic phase comprising a fragrance, and said open end is covered by a breathable film which permits of egress of the fragrance and water-vapour.
- Surprisingly we found that the addition of water to a fragrance not only influences the life-cycle of the air-freshening device but also is important for the essentially continuous release of the fragrance. The air-freshener device permits of strong fragrance release and the character of the released fragrance does not substantially alter over a long period of time, e.g. 4 to 6 weeks. We have found that the present of water influences the impact and quality of the released fragrance and leads to higher evaporation profile measured by the weight lost of the product over a time period of use as is more specifically illustrated in the examples. The rate of evaporation and therefore the life-cycle of the air-freshening device may be varied depending on the ratio of water to fragrance. In a preferred embodiment, the weight ratio between water to fragrance is about 9:1 to about 1:9, more preferably about 7:3 to about 3:7, most preferably 4:1 to about 2:3.
- The strength of a fragrance can be evaluated by the measurement of the odour value, or by sniffing. The odour value of a fragrance material is defined as the ratio of the vapour pressure and its mean odour threshold concentration. The odour threshold concentration can be measured by standard methods, for example described by ASTM E679-91. To calculate the odour value of a fragrance composition the vapour pressure and odour threshold concentration of the fragrance has to be determined. Because of the time-consuming and elaborate nature of methods to determine the odour value the analysis of the fragrance strength by sniffing is preferred, as is well known in the perfumery arts.
- The character of a fragrance (the so-called hedonic character) relies on the contribution of all components of a fragrance through evaporation. Highly volatile fragrance components (so-called Top Notes) are responsible for the initial impression of a fragrance. Less volatile fragrance components (so-called Middle Notes, also known as Heart Notes, and so-called Bottom Notes, also known as Base Notes) are responsible for the long-lasting impression of a fragrance. A fragrance's character depends on the harmonisation of Top Note, Middle Note, and Bottom Note. Clearly, it is highly desired that the released fragrance character does not significantly change during use of an air-freshening device over a prolonged period of time. The air-freshener devices of the present invention may permit substantially the same ease of passage to all fragrance ingredients irrespective of their physicochemical properties such as volatility and thus leads to the balanced nature of the fragrance emitted from the device. Without wishing to be bound by any theory applicant believes that due to the addition of water to the fragrance the developed water-vapour in a headspace of the device acts as a carrier for the fragrance to pass through the breathable film irrespective of their volatility.
-
- Micro-porous films are such films with small pores that permit passage of water-vapour. Typically, they comprises micropores having pore sizes of e.g. down to about 10 μm. The small size of the pores prevents the penetration of liquid phase water across the film, but the interconnected pore structure allows the transmission of water-vapour. Micro-porous films may be made from, e.g. polyolefins, polytetrafluoroethylenes (PTFE) and precipitated polyurethanes.
- Monolithic films are based on copolymers having so called hard and soft segments. The hard segments may be polyesters, for example glycol, propanediol or butanediol units and dicarboxylic acid units connected by ester functional groups; polyurethanes; or polyamides, for example polyamid 6 (PA-6), polyamid 11 (PA-11), or polyamid 12 (PA-12). The soft segments, responsible for the water-vapour transmission, may be formed by polyether units, for example polyethylene glycol (PEG), polypropylene glycol (PPG) or polytetramethylene glycol (PTMG) or mixtures thereof, and dicarboxylic acids, such as, for example terephtalic acid. Monolithic films based on polyester block hard segments are described in U.S. Pat. Nos. No. 5,800,928, 4,725,481, and 6,001,464; Monolithic films based on polyurethane hard segments are described in U.S. Pat. Nos. 5,800,928 and 6,001,464; Monolithic films based on polyamide hard segments are described in U.S. Pat. Nos. 5,800,928 and 5,506,024; all of which are incorporated herein by reference.
- Parameters including molecular weight of the soft segment and the glass transition temperature influence the flexibility of the film. Therefore, the molecular weight of the soft segment is preferably between 600 and 4000 g/mol. The glass transition temperature is preferably below 0° C. The amount of the soft segment may vary widely depending on the particular properties desired. However, in a preferred embodiment the amount of the soft segment may be between 15% and 40% by weight of the film, preferably between 20% and 30% by weight. The soft segment formed by polypropylene glycol is preferred. Most preferred are soft segments formed by polyethylene glycol, or a mixture of polyethylene glycol and polypropylene glycol.
- Examples of monolithic breathable films are poly(ether-co-amide), e.g. PEBAX® by Atofina and poly(ether-co-ester), e.g. HYTREL®60 by DuPont.
- Properties such as the hydrophilic nature of the film, its crystallinity and the presence and amount of certain additives, e.g. filler, may affect the breathability of the film. By breathability) is meant the water-vapour transmission rate (WVT) or water-vapour permeability (WVP). Its measuring unit is g/m2/24 h and it is calculated by measuring how many grammes of water-vapour pass through one square meter of film in 24 hours. A variety of test methods have been developed to measure this property, for example ASTM E96 and DIN 53 122. Although most standard methods are of similar concept there are variables, e.g. temperature and relative humidity of the test environment, the principle of the test method, i.e. upright dish water method, upright dish desiccant method, inverted cup method, and inverted water method, that have an influence on the calculated water-vapour transmission rate. Consequently, the results from different methods are not directly comparable.
- The breathable film according to the present invention preferably may have a thickness from about 10 μm to about 50 μm more preferred from 15 μm to about 40 μm.
- The container according to the present invention may be made of any material that is commonly used for air-freshener devices, e.g. glass or plastic. Such materials are preferred, which are stable in the presence of fragrance materials, e.g. essential oils. The container may be of any shape or configuration subject to it having an open end and capable of receiving aqueous and oil phases. Preferably, in the filled container the upper liquid surface does not abut the surface of the breathable film. Rather, in a preferred embodiment there should be a space between the upper surface of the liquid phase and the lower surface of the breathable film in which a head-space of fragrance and water-vapour may develop. This space is preferably not greater than 8 cm, more preferably not greater than 3 cm, for example between 1 cm and 2 cm, most preferably not greater than 1 cm.
- The breathable film may be attached to the container in a sealed relationship utilising any conventional means, such as an adhesive, heat seal or the like. Such means are preferred which form a strong bond between the film and the container to avoid the leakage of the liquid composition.
- The hydrophobic phase according to the present invention consists of fragrance. A fragrance according to the present invention is a mixture of fragrance materials selected from such classes as acids, esters, alcohols, aldehydes, ketones, lactones, nitriles, ethers, acetates, hydrocarbons, sulfur- nitrogen- and oxygen-containing heterocyclic, polycyclic and macrocyclic compounds, as well essential oils of natural or synthetic origin. Such fragrance materials are described, for example, in S. Arctander Perfume Flavors and Chemicals Vols. 1 and 2, Arctander, Montclair, N.J. USA 1969. The fragrance optionally may comprise odourless liquids such as dipropylene glycol, propylene glycol, diethylphtalate, benzyl benzoate, triethylcitrate, isopropylmyristate, carbitol, and hexylene glycol, or mixtures thereof. The appropriate choice of the liquid not only depends on the amount in which it may be used but also on the nature of the fragrance as will be fully appreciated by the person skilled in the art. Preferably, the fragrance comprises not more than 20% by weight of these liquids. A fragrance may contain residual water either due to the presence of a solvent or due to the production process. It is to be understood that in the context of the present invention water has to added addition to any residual water that may be present to form a composition according to the present invention. In an preferred embodiment the composition according to the present invention comprises more than 10% by weight of water, more preferably more than 25% by weight, most preferably between 50% and 90% by weight of water. A skilled person will be aware that effects may also be achieved with low fragrance concentrations. Thus, a composition comprising 95% by weight of water or even more, e.g. 98%, may also be used to form a composition according to the present invention.
- Optionally, the hydrophobic phase may comprise a lipophilic dye, for example Puricolor® blue FBL5, Puricolor® blue ABL9, Puricolor® green U3 or Puricolor® yellow AYE23 from Ciba.
- For air-freshening devices fragrances are preferred comprising a high amount of fragrance material having a vapour pressure greater than 1000 μg/l. These fragrance materials are classified as Top Notes and may be selected from acetate C6 hexylic, acetophenone, alcohol C6 hexylic, aldehyde C7 heptylic, aldehyde C9 isononylic, allyl caproate, allyl oenanthate, amyl butyrate, amyl vinyl carbinol, anapear, benzaldehyde, benzyl formate, benzyl methyl ether, bornyl acetate liquid, butyl acetate, camphene, carbitol, citronellal, cresyl methyl ether para, cyclal C, cymene para, decenal-4-trans, delta-3 carene, diethyl malonate, dihydro anethole, dihydro myrcenol, dimethyl octenone, dimetol, dimyrcetol, dipentene, estragole, ethyl acetate, ethyl acetoacetate, ethyl amyl ketone, ethyl benzoate, ethyl butyrate, ethyl caproate, ethyl isoamyl ketone, ethyl isobutyrate, ethyl methyl-2-butyrate, ethyl oenanthate, ethyl propionate, eucalyptol, fenchone alpha, fenchyl acetate, fenchyl alcohol, freskomenthe, geranodyle, guaiacol, hexenal-2-trans, hexenol-3-cis, hexenyl acetate, hexenyl-3-cis butyrate, hexenyl-3-cis formate, hexenyl-3-cis isobutyrate, hexenyl-3-cis methyl-2-butyrate, hexenyl-3-cis propionate, hexyl butyrate, hexyl isobutyrate, hexyl propionate, hydratropic aldehyde, isoamyl propionate, isobutyl isobutyrate, isocyclocitral, isopentyrate, isopropyl methyl-2-butyrate, isopulegol, leaf acetal, lime oxide, limetol, linalool oxide, linalool, manzanate, melonal, menthone, methyl amyl ketone, methyl benzoate, methyl camomille, methyl hexyl ketone, methyl pamplemousse, methyl salicylate, nonanyl acetate, ocimene, octenyl acetate, pandanol, pinene alpha, pinene beta, prenyl acetate, terpinene gamma, terpinolene, tetrahydro citral, tetrahydro linalool, tricyclal, and valerolactone gamma.
- Fragrance materials having a vapour pressure between 10 μl/l and 1000 μg/l are classified as Middle Notes and may be selected from acetal E, acetal R, acetanisole, adoxal, agrumex, alcohol C10 decylic, alcohol C11 undecylenic, alcohol C12 lauric, alcohol C8 octylic, alcohol C9 nonylic, aldehyde C11 undecylenic, aldehyde C11 undecylic, aldehyde C12 lauric, aldehy, aldehyde iso C11, allyl amyl glycolate, allyl cyclohexyl propionate, ambrinol, amyl benzoate, amyl caproate, amyl cinnamic aldehyde, amyl phenyl acetate, amyl salicylate, anethole synthetic, anisyl acetate, anisyl alcohol, anther, aubepine para cresol, benzyl acetone, benzyl butyrate, benzyl isobutyrate, benzyl isovalerate, benzyl propionate, bergamyl acetate, berryflor, boisiris, butyl butyro lactate, butyl cyclohexanol para, butyl cyclohexyl acetate para, butyl quinoline secondary, carvone laevo, caryophyllene, cashmeran, cedrene epoxide, cedroxyde, cedryl methyl ether, celery ketone, centifolyl, cetonal, cetone alpha, cinnamic aldehyde, cinnamyl acetate, citral dimethyl acetal, citrodyle, citronellol, citronellyl acetate, citronellyl butyrate, citronellyl formate, citronellyl isobutyrate, citronellyl nitrile, citronellyl oxyacetaldehyde, citronellyl propionate, clonal, coniferan, creosol, cresyl acetate para, cresyl isobutyrate para, cumin nitrile, cuminic aldehyde, cuminyl alcohol, cyclamen aldehyde extra, cyclogalbanate, cyclohexyl ethyl acetate, cyclohexyl salicylate, cyclomethylene citronellol, cyperate, damascenone, decahydro naphthyl formate beta, decalactone delta, decalactone gamma, decatone, decyl methyl ether, delphone, dihexyl fumarate, dihydro ambrate, dihydro cyclacet, dihydro eugenol, dihydro farnesal, dihydro ionone beta, dihydro jasmone, dihydro linalool, dihydro terpineol, dimethyl anthranilate, dimethyl benzyl carbinol, dimethyl benzyl carbinyl acetate, dimethyl benzyl carbinyl butyrate, dimethyl phenyl ethyl carbinol, dimethyl phenyl ethyl carbinyl acetate, diphenyl methane, diphenyl oxide, dipropylene glycol, dupical, ebanol, ethyl caprylate, ethyl cinnamate, ethyl decadienoate, ethyl linalool, ethyl linalyl acetate, ethyl octenoate-2, ethyl pelargonate, ethyl phenoxy acetate, ethyl phenyl acetate, ethyl phenyl glycidate, ethyl salicylate, eugenol pure, eugenyl acetate, famesene, fennaldehyde, fixambrene, floralozone, floramat, florol, floropal, folenox, folione, folrosia, fraistone, fructone, fruitate, gardenol, gardocyclene, georgywood, geraniol, geranitrile, geranitrile T, geranyl acetate, geranyl acetone, geranyl butyrate, geranyl crotonate, geranyl formate, geranyl isobutyrate, geranyl propionate, givescone, glycolierral, guaiyl acetate, gyrane, heliotropine crystals, hexenyl-3-cis benzoate, hexenyl-3-cis hexenoate, hexenyl-3-cis salicylate, hexenyl-3-cis tiglate, hexyl benzoate, hydroxycitronellal dimethyl acetal, indoflor, indole pure, indolene, ionone beta, irisantheme, irisone alpha, ironal, irone alpha, irone E, irone F, iso E super, isobornyl propionate, isobutyl benzoate, isobutyl phenyl acetate, isobutyl quinoline-2, isobutyl salicylate, isocaryol acetate, isoeugenol, jasmal, jasmin lactone delta, jasmin lactone gamma, jasmolactone, jasmone cis, jasmonyl, kephalis, kohinool, labienone, lactoscatone, lemarome N, lemonile, lierral, lilial, linalyl acetate, linalyl butyrate, linalyl formate, linalyl isobutyrate, linalyl propionate, lindenol, majantol, mayol, menthanyl acetate, metambrate, methoxy phenyl butanone, methyl acetophenone, methyl cinnamate, methyl cinnamic aldehyde, methyl decalactone gamma, methyl diantilis, methyl diphenyl ether, methyl ional beta, methyl isoeugenol, methyl octalactone, methyl octyl acetaldehyde, methyl octyne carbonate, methyl phenyl acetate, methyl quinoline para, moxalone, myraldene, neofolione, nerol C, neryl acetate, nonadyl, nopyl acetate, octahydro coumarin, octalactone delta, octalactone gamma, orcinyl 3, orivone, osyrol, oxyoctaline formate, parmavert, peach pure, pelargol, phenoxanol, phenoxy ethyl alcohol, phenoxy ethyl isobutyrate, phenyl ethyl acetate, phenyl ethyl alcohol, phenyl ethyl butyrate, phenyl ethyl formate, phenyl ethyl isobutyrate, phenyl propionic aldehyde, phenyl propyl acetate, phenyl propyl alcohol, pinoacetaldehyde, plicatone, precarone, prunolide, pyralone, radjanol, resedal, rhodinyl acetate, rhubafuran, rhubofix, rhuboflor, rosalva, sandalore, scentenal, skatole, spirambrene, stemone, strawberry pure, styrallyl propionate, syringa aldehyde, tangerinol, terpinene alpha, terpinyl acetate, terranil, tetrahydro linalyl acetate, tetrahydro myrcenol, tridecenonitrile, tropional, undecatriene, undecavertol, veloutone, verdol, verdyl acetate, verdyl propionate, vernaldehyde, vetynal, vetyvenal, and viridine.
- Fragrance materials having a vapour pressure below 10 μg/l are classified as Bottom Notes and may be selected from 2-benzyl-4-methanol-1,3-dioxolane, aldrone, ambrettolide, ambroxan, benzophenone, benzyl benzoate, benzyl cinnamate, benzyl phenyl acetate, cepionate, cetalox, citronellyl ethoxalate, civettone, cresyl caprylate para, cresyl phenyl acetate para, cyclohexal, diethyl phthalate, dione, dodecalactone delta, dodecalactone gamma, ethyl maltol, ethyl vanillin, ethylene brassylate, eugenyl phenyl acetate, evernyl, fixolide, florhydral, galaxolide, geranyl phenyl acetate, geranyl tiglate, grisalva, hedione, hexyl cinnamic aldehyde, hexyl salicylate, isomethyl cedryl ketone, laitone, linalyl benzoate, linalyl cinnamate, linalyl phenyl acetate, maltol, maltyl isobutyrate, methyl cedryl ketone, methyl dihydro isojasmonate, muscone, myraldyl acetate, nectaryl, okoumal, orange aldehyde, oranile, peonile, phenyl ethyl benzoate, phenyl ethyl cinnamate, phenyl ethyl phenyl acetate, propyl diantilis, rosacetol, rosaphen, sandela, thibetolide, timberol, triethyl citrate, undecalactone delta, vanillin, vanitrope, and velvione.
-
- The aqueous phase according to the present invention may be water, for example distilled water. Other excipients optionally present in the aqueous phase are salts, for example sodium chloride and magnesium sulfate to minimize the migration of water soluble fragrance materials. Other excipients, e.g. water soluble dyes may also be present in the aqueous phase.
- In order to prevent evaporation of fragrance during storage, the device may have fitted over the container and the breathable film, a non-breathable material, such as an aluminium foil, polyolefine films, ethylene acrylic acid copolymer films, polyethylene terephtalate films, or ethylen vinyl acetate films, which may be easily removed prior to use.
- In a particular preferred embodiment of the present invention, the composition held in the container comprises an upper hydrophobic phase comprising a fragrance, and a lower aqueous phase.
- In an alternative embodiment, the composition comprising the hydrophobic phase and the aqueous phase is provided as an emulsion.
- The emulsion may optionally comprise a surfactant such as for example non-ionic surfactants, e.g. Neodol 91-8 from Shell Chemicals and Cremophor RH40 from BASF.
- The invention has been described in terms of releasing fragrance. However, the device according to the invention may deliver other ingredients such as insect repellents, insect attractants, or materials having insecticidal activities, substance having antimicrobial activities, or mixtures thereof. In addition to these active principals, fragrance compositions may comprise excipients such as dyes and UV-absorbers.
- For manufacturing a device according to the present invention the container may be filled in a first step with the aqueous phase followed by adding on top of the aqueous phase the hydrophobic phase. If the hydrophobic phase and the aqueous phase is provided as an emulsion, in a first step both phases may be prepared separately and then mixed together to form an emulsion, according to a process well known in the art, followed by filling the resulting emulsion into the container. After filling the container the open end of the container is covered by the breathable film, which itself might be covered by a removable impermeable film for storage.
- While the invention has been illustrated and described with respect to an air-freshening device for the controlled release of volatile substances at room temperature, it will be apparent to those skilled in the art that the device may also find use in combination with electrical heated vapour dispensing devices.
- The invention is illustrated by the following examples.
- A fragrance composition having citrus and spicy top notes with floral and middle notes and ambery and musky bottom notes was used in all examples.
- Comparative Product A (Liquid Fragrance Composition Comprising a Cellulose Wick)
- Blend under stirring at room temperature 8.0 g fragrance and 8.0 g of Neodol (manufactured by Shell). Then, add 34 g water, 25 g dipropyleneglycolmethyleter, and 25 g ethyl alcohol. Stir until the solution becomes clear. Pour 70 g of the solution into a glass container and insert a wick, made of cellulose in the middle of the container. The one end of the wick is in contact with the solution and the other end of it is in contact with the ambient air to supply the ambient air with fragrance.
- Comparative Product B (Solid Gel Fragrance Composition Comprising a Gelling Agent)
- Blend at room temperature 1.735 g Lithene N4-9000-1 OMA from Revertex Ltd with 8.0 g fragrance together. Add under stirring 0.265 g of Crodamet O2 from Revertex Ltd. Stir for about 10 minutes and pour 7 g of the composition into a glass container.
- Product C (Liquid Fragrance Composition According to the Present Invention)
- Pour 17.4 g water into a glass container and add 5.6 g fragrance. Seal the container with Pebax® MV 6100 film from Atofina.
- Product A, B, and C were evaluated in booths.
- The fragrance strength of each of the products was evaluated by an expert panel of 20 members by sniffing. The result was entered on a scale from 1 to 5, wherein 5 is very strong, 4 is strong, 3 is moderate, 2 is weak, and 1 is very weak. The average value is shown in Table 1.
TABLE 1 Comp. Product A Comp. Product B Product C Fresh product 2 4 4.5 After 1 week 2 4 4 After 2 weeks 1 3 4 After 4 weeks 0.5 2 4 - The fragrance strength of Product C is at all stages better than the fragrance strength of the comparison products, i.e. the wick system (Comp. Product A) permits at each age of the product only a weak egress of the fragrance and the gel system (Comp. Product B) releases a strong fragrance up to one week but the strength of the fragrance decreases over the period of time and was described to be weak after 4 weeks.
- The ambient air in the booths of Product A, B, and C, prepared according to Example 1 were collected as fresh products, and 1, 2 and 4 weeks after preparation. Then the samples were analysed by GC/MS. The results are shown in Table 2. The principles of the headspace analysis is described in the Journal of Agriculture and Food Chemistry, Vol. 19, No. 6 (1971), page 1049-1056.
TABLE 2 Fresh After After After Product 1 week 2 weeks 4 weeks Comp. Product A Top Note 95% 87% 82% 77% Middle Note 4.7% 12% 16.2% 21.4% Bottom Note 0.3% 1% 1.8% 1.6% Comp. Product B Top Note 95% 74% 68% 72% Middle Note 4.6% 24% 30% 25.3% Bottom Note 0.4% 2% 2% 2.7% Product C Top Note 93.5% 93% 92% 91% Middle Note 6% 6% 6.5% 6.2% Bottom Note 0.5% 1% 1.5% 1.8% -
- Pour water into a glass container and add fragrance according to the mixture scheme given in Table 3 and seal the container sealed with Pebax® MV 6100 film from Atofina.
TABLE 3 Water Fragrance (parts per weight) (parts per weight) total Mixture A 0 100 100 Mixture B 30 70 100 Mixture C 50 50 100 Mixture D 80 20 100 - Mixture A, B, C and D were evaluated by an expert panel in terms of strength and quality and resulted in the following ranking: Mixture D was better than Mixture C and Mixture C was better than Mixture B. The weakest was mixture A. If no water is added, Mixture A, the fragrance performance is very weak.
- The weight lost of a glass container containing Mixture A (comparative product) and a container containing Mixture C from Example 3 have been measured on a daily base for a 30 day period. The results are shown in
FIG. 1 .
Claims (21)
1. An air-freshening device comprising a container having an open end, the container holding a composition comprising an aqueous phase, and a hydrophobic phase comprising a fragrance, and said open end is covered by a breathable film.
2. The air-freshening device of claim 1 wherein said composition comprises more than 10% by weight of water.
3. The air-freshening device of claim 1 , wherein the container holding a composition comprises of lower aqueous phase, and an upper hydrophobic phase comprising a fragrance.
4. The air-freshening device of claim 1 wherein the composition is in the form of an emulsion.
5. The air-freshening device of claim 1 wherein the breathable film is selected from the group consisting of monolithic films and micro-porous films.
6. The air-freshening device of claim 5 wherein the monolithic film is a copolymer comprising soft segments formed by polyether units selected from the group consisting of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and mixtures thereof.
7. The air-freshening device of claim 1 wherein the monolithic film is selected from poly(ether-co-amide) films and poly(ether-co-ester) films.
8. The air-freshening device of claim 1 having a space between the upper surface of the composition and the lower surface of the breathable film.
9. The air-freshening device of claim 1 wherein a non-breathable material is releasably fitted over the breathable film.
10. A method of manufacturing the air-freshening device of claim 1 comprising the steps of
filling an aqueous phase in a container;
adding on top of the aqueous phase a hydrophobic phase comprising the fragrance; and
covering the open end of the container with a breathable film; and optionally
fitting a non-breathable film over the breathable film.
11. A method of releasing fragrance to ambient air comprising exposing the air-freshening device of claim 1 to the ambient air.
12. The air-freshening device of claim 1 wherein the weight ratio of water to fragrance in the composition is about 9:1 to about 1:9.
13. The air-freshening device of claim 1 wherein the weight ratio of water to fragrance in the composition is about 7:3 to about 3:7.
14. The air-freshening device of claim 13 wherein the weight ratio of water to fragrance in the composition is about 4:1 to about 2:3.
15. The air-freshening device of claim 6 wherein the amount of the soft segments is between 15% and 40% by weight of the film.
16. The air-freshening device of claim 15 wherein the amount of the soft segments is between 20% and 30% by weight.
17. The air-freshening device of claim 8 wherein the space between the upper surface of the composition and the lower surface of the breathable film is not greater than 3 cm.
18. The air-freshening device of claim 17 wherein the space between the upper surface of the composition and the lower surface of the breathable film is not greater than 1 cm.
19. The air-freshening device of claim 1 wherein:
(a) the weight ratio of water to fragrance in the composition is about 9:1 to about 1:9;
(b) the breathable film is a monolithic film and is a copolymer comprising soft segments formed by polyether units selected from the group consisting of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and mixtures thereof, wherein the amount of the soft segments is between 15% and 40% by weight of the film;
(c) there is a space between the upper surface of the composition and the lower surface of the breathable film and said space is not greater than 3 cm.
20. The air-freshening device of claim 1 wherein:
(a) the weight ratio of water to fragrance in the composition is about 4:1 to about 2:3;
(b) the breathable film is a monolithic film and is a copolymer comprising soft segments formed by polyether units selected from the group consisting of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and mixtures thereof, wherein the amount of the soft segments is between 20% and 30% by weight of the film;
(c) there is a space between the upper surface of the composition and the lower surface of the breathable film and said space is not greater than 1 cm.
21. The air-freshening device of claim 5 wherein the breathable film has soft segments which are formed by polyether units and dicarboxylic acid.
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PCT/CH2003/000076 WO2003072151A1 (en) | 2002-02-28 | 2003-01-30 | Air-freshening device |
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2002
- 2002-02-28 EP EP02004584A patent/EP1340513A1/en not_active Withdrawn
-
2003
- 2003-01-30 KR KR10-2004-7013326A patent/KR20040088553A/en not_active Application Discontinuation
- 2003-01-30 AT AT03700300T patent/ATE347384T1/en not_active IP Right Cessation
- 2003-01-30 JP JP2003570894A patent/JP2005518840A/en active Pending
- 2003-01-30 AU AU2003201603A patent/AU2003201603A1/en not_active Abandoned
- 2003-01-30 WO PCT/CH2003/000076 patent/WO2003072151A1/en active IP Right Grant
- 2003-01-30 US US10/505,819 patent/US20050145711A1/en not_active Abandoned
- 2003-01-30 DE DE60310204T patent/DE60310204D1/en not_active Expired - Lifetime
- 2003-01-30 EP EP03700300A patent/EP1478410B1/en not_active Expired - Lifetime
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US20030027637A1 (en) * | 2001-07-13 | 2003-02-06 | Square Co., Ltd. | Computer-readable recording medium for storing a video game program, a video game program, a video game processing method, and a video game processing apparatus |
US20070083999A1 (en) * | 2005-10-13 | 2007-04-19 | Leskowicz James J | Deodorizing compositions |
US20070083998A1 (en) * | 2005-10-13 | 2007-04-19 | Leskowicz James J | Deodorizing compositions |
US7261742B2 (en) | 2005-10-13 | 2007-08-28 | S.C. Johnson & Son, Inc. | Method of deodorizing a textile |
US7407515B2 (en) | 2005-10-13 | 2008-08-05 | S.C. Johnson & Son, Inc. | Method of deodorizing a textile |
US7407922B2 (en) | 2005-10-13 | 2008-08-05 | S.C. Johnson & Son, Inc. | Deodorizing compositions |
US7665238B2 (en) | 2006-04-03 | 2010-02-23 | S.C. Johnson & Son, Inc. | Air freshener with holder |
US7926735B1 (en) * | 2008-03-09 | 2011-04-19 | Mobley David D | Fragrance package, dispenser, and method |
US9044414B2 (en) | 2008-06-13 | 2015-06-02 | S.C. Johnson & Son, Inc. | Compositions containing a solvated active agent for dispensing as a gas aerosol |
US8927474B2 (en) | 2012-03-16 | 2015-01-06 | S.C. Johnson & Son, Inc. | Compressed gas aerosol composition in steel can |
US20160000958A1 (en) * | 2013-02-20 | 2016-01-07 | Carlos Jose Duarte Matias | A dispensing unit |
US10010641B2 (en) * | 2013-02-20 | 2018-07-03 | Carlos Jose Duarte Matias | Dispensing unit |
US10960097B2 (en) * | 2015-03-19 | 2021-03-30 | S. C. Johnson & Son, Inc. | Composite membrane |
US20190177653A1 (en) * | 2016-06-08 | 2019-06-13 | Takasago International Corporation | Fragrance material |
US10774289B2 (en) * | 2016-06-08 | 2020-09-15 | Takasago International Corporation | Fragrance material |
Also Published As
Publication number | Publication date |
---|---|
AU2003201603A1 (en) | 2003-09-09 |
DE60310204D1 (en) | 2007-01-18 |
JP2005518840A (en) | 2005-06-30 |
EP1478410B1 (en) | 2006-12-06 |
KR20040088553A (en) | 2004-10-16 |
ATE347384T1 (en) | 2006-12-15 |
EP1478410A1 (en) | 2004-11-24 |
WO2003072151A1 (en) | 2003-09-04 |
EP1340513A1 (en) | 2003-09-03 |
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Owner name: GIVAUDAN SA, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLONDEAU, PHILIPPE;QUELLET, CHRISTIAN;DUMAS KRIKORIAN, SANDRINE;AND OTHERS;REEL/FRAME:015970/0102;SIGNING DATES FROM 20040302 TO 20041004 |
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STCB | Information on status: application discontinuation |
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