CA2316503A1 - Fabric softener composition - Google Patents
Fabric softener composition Download PDFInfo
- Publication number
- CA2316503A1 CA2316503A1 CA2316503A CA2316503A CA2316503A1 CA 2316503 A1 CA2316503 A1 CA 2316503A1 CA 2316503 A CA2316503 A CA 2316503A CA 2316503 A CA2316503 A CA 2316503A CA 2316503 A1 CA2316503 A1 CA 2316503A1
- Authority
- CA
- Canada
- Prior art keywords
- fabric
- fragrance
- enzyme
- fragrance precursor
- composition according
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 117
- 239000002979 fabric softener Substances 0.000 title abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 114
- 239000003205 fragrance Substances 0.000 claims abstract description 97
- 239000002243 precursor Substances 0.000 claims abstract description 74
- 102000004190 Enzymes Human genes 0.000 claims abstract description 58
- 108090000790 Enzymes Proteins 0.000 claims abstract description 58
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 18
- 229940088598 enzyme Drugs 0.000 claims description 56
- 239000004367 Lipase Substances 0.000 claims description 21
- 108090001060 Lipase Proteins 0.000 claims description 21
- 102000004882 Lipase Human genes 0.000 claims description 21
- 235000019421 lipase Nutrition 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 102000013142 Amylases Human genes 0.000 claims description 9
- 108010065511 Amylases Proteins 0.000 claims description 9
- 108091005804 Peptidases Proteins 0.000 claims description 9
- 239000004365 Protease Substances 0.000 claims description 9
- 235000019418 amylase Nutrition 0.000 claims description 9
- 150000002576 ketones Chemical class 0.000 claims description 9
- 150000001299 aldehydes Chemical class 0.000 claims description 8
- 239000003093 cationic surfactant Substances 0.000 claims description 8
- 230000005923 long-lasting effect Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 102000035195 Peptidases Human genes 0.000 claims description 6
- 229940025131 amylases Drugs 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 108010084185 Cellulases Proteins 0.000 claims description 4
- 102000005575 Cellulases Human genes 0.000 claims description 4
- 238000003776 cleavage reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 150000002923 oximes Chemical class 0.000 claims description 3
- 230000007017 scission Effects 0.000 claims description 3
- 239000007848 Bronsted acid Substances 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims 1
- 239000003945 anionic surfactant Substances 0.000 claims 1
- 125000002587 enol group Chemical group 0.000 claims 1
- 230000031070 response to heat Effects 0.000 claims 1
- 239000003599 detergent Substances 0.000 description 34
- 125000000217 alkyl group Chemical group 0.000 description 17
- 125000001183 hydrocarbyl group Chemical group 0.000 description 16
- QLAJNZSPVITUCQ-UHFFFAOYSA-N 1,3,2-dioxathietane 2,2-dioxide Chemical compound O=S1(=O)OCO1 QLAJNZSPVITUCQ-UHFFFAOYSA-N 0.000 description 15
- 150000002148 esters Chemical class 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 13
- 235000019645 odor Nutrition 0.000 description 12
- 238000005406 washing Methods 0.000 description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 11
- -1 siloxanes Chemical class 0.000 description 11
- 125000003342 alkenyl group Chemical group 0.000 description 10
- 239000003760 tallow Substances 0.000 description 10
- 239000004615 ingredient Substances 0.000 description 9
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 150000001450 anions Chemical group 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- PUAQLLVFLMYYJJ-UHFFFAOYSA-N 2-aminopropiophenone Chemical compound CC(N)C(=O)C1=CC=CC=C1 PUAQLLVFLMYYJJ-UHFFFAOYSA-N 0.000 description 5
- 108010059892 Cellulase Proteins 0.000 description 5
- 125000001931 aliphatic group Chemical group 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 5
- 229940106157 cellulase Drugs 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- IQDGSYLLQPDQDV-UHFFFAOYSA-N dimethylazanium;chloride Chemical compound Cl.CNC IQDGSYLLQPDQDV-UHFFFAOYSA-N 0.000 description 5
- 150000002085 enols Chemical group 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 5
- 230000000813 microbial effect Effects 0.000 description 5
- 239000003755 preservative agent Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- UFLHIIWVXFIJGU-ARJAWSKDSA-N (Z)-hex-3-en-1-ol Chemical compound CC\C=C/CCO UFLHIIWVXFIJGU-ARJAWSKDSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
- GLZPCOQZEFWAFX-UHFFFAOYSA-N Geraniol Chemical compound CC(C)=CCCC(C)=CCO GLZPCOQZEFWAFX-UHFFFAOYSA-N 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 4
- 239000002216 antistatic agent Substances 0.000 description 4
- 150000002191 fatty alcohols Chemical class 0.000 description 4
- 150000004820 halides Chemical class 0.000 description 4
- 125000005842 heteroatom Chemical group 0.000 description 4
- UFLHIIWVXFIJGU-UHFFFAOYSA-N hex-3-en-1-ol Natural products CCC=CCCO UFLHIIWVXFIJGU-UHFFFAOYSA-N 0.000 description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 4
- 230000035807 sensation Effects 0.000 description 4
- 235000019615 sensations Nutrition 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004382 Amylase Substances 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- KIWBPDUYBMNFTB-UHFFFAOYSA-N Ethyl hydrogen sulfate Chemical group CCOS(O)(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- BAVYZALUXZFZLV-UHFFFAOYSA-O Methylammonium ion Chemical compound [NH3+]C BAVYZALUXZFZLV-UHFFFAOYSA-O 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 3
- 239000004902 Softening Agent Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- DBHODFSFBXJZNY-UHFFFAOYSA-N 2,4-dichlorobenzyl alcohol Chemical compound OCC1=CC=C(Cl)C=C1Cl DBHODFSFBXJZNY-UHFFFAOYSA-N 0.000 description 2
- OADSZWXMXIWZSQ-UHFFFAOYSA-N 2-bromo-2-nitropropane Chemical compound CC(C)(Br)[N+]([O-])=O OADSZWXMXIWZSQ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 229920000858 Cyclodextrin Polymers 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- 239000005792 Geraniol Substances 0.000 description 2
- GLZPCOQZEFWAFX-YFHOEESVSA-N Geraniol Natural products CC(C)=CCC\C(C)=C/CO GLZPCOQZEFWAFX-YFHOEESVSA-N 0.000 description 2
- 241001480714 Humicola insolens Species 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 239000004665 cationic fabric softener Substances 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 229940097362 cyclodextrins Drugs 0.000 description 2
- 229960004698 dichlorobenzyl alcohol Drugs 0.000 description 2
- PGZPBNJYTNQMAX-UHFFFAOYSA-N dimethylazanium;methyl sulfate Chemical compound C[NH2+]C.COS([O-])(=O)=O PGZPBNJYTNQMAX-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000002255 enzymatic effect Effects 0.000 description 2
- 229940113087 geraniol Drugs 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 2
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical class C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- KVWWIYGFBYDJQC-UHFFFAOYSA-N methyl dihydrojasmonate Chemical compound CCCCCC1C(CC(=O)OC)CCC1=O KVWWIYGFBYDJQC-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 108010020132 microbial serine proteinases Proteins 0.000 description 2
- LUKNLVTZDZMBOU-UHFFFAOYSA-N n-ethoxymethanamine Chemical compound CCONC LUKNLVTZDZMBOU-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- ZGOQRUPIKZGTLQ-UHFFFAOYSA-N 1,2-benzothiazole 1-oxide;sodium Chemical compound [Na].C1=CC=C2S(=O)N=CC2=C1 ZGOQRUPIKZGTLQ-UHFFFAOYSA-N 0.000 description 1
- JLJNZJNPAYILPJ-XYJRJTJESA-M 1-[1-[(z)-octadec-9-enyl]-4,5-dihydroimidazol-1-ium-1-yl]tetradecan-1-ol;chloride Chemical compound [Cl-].CCCCCCCC\C=C/CCCCCCCC[N+]1(C(O)CCCCCCCCCCCCC)CCN=C1 JLJNZJNPAYILPJ-XYJRJTJESA-M 0.000 description 1
- MHZGNGKLCOJVPV-UHFFFAOYSA-N 1-o-(3,7-dimethylocta-2,6-dienyl) 4-o-[3-(2-methoxy-2-oxoethyl)-2-pentylcyclopenten-1-yl] butanedioate Chemical compound CCCCCC1=C(OC(=O)CCC(=O)OCC=C(C)CCC=C(C)C)CCC1CC(=O)OC MHZGNGKLCOJVPV-UHFFFAOYSA-N 0.000 description 1
- UHPMCKVQTMMPCG-UHFFFAOYSA-N 5,8-dihydroxy-2-methoxy-6-methyl-7-(2-oxopropyl)naphthalene-1,4-dione Chemical compound CC1=C(CC(C)=O)C(O)=C2C(=O)C(OC)=CC(=O)C2=C1O UHPMCKVQTMMPCG-UHFFFAOYSA-N 0.000 description 1
- 240000004539 Alocasia cucullata Species 0.000 description 1
- 241000194108 Bacillus licheniformis Species 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000222120 Candida <Saccharomycetales> Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000242346 Constrictibacter antarcticus Species 0.000 description 1
- 241000047214 Cyclocybe cylindracea Species 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 241000223218 Fusarium Species 0.000 description 1
- 241000223221 Fusarium oxysporum Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 241000223198 Humicola Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical class C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000235395 Mucor Species 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 241000235402 Rhizomucor Species 0.000 description 1
- 241000235403 Rhizomucor miehei Species 0.000 description 1
- 108010056079 Subtilisins Proteins 0.000 description 1
- 102000005158 Subtilisins Human genes 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 125000006193 alkinyl group Chemical group 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- 125000005466 alkylenyl group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000001153 anti-wrinkle effect Effects 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 125000002837 carbocyclic group Chemical group 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000000392 cycloalkenyl group Chemical group 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- HPDYVEVTJANPRA-UHFFFAOYSA-M diethyl(dihexadecyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](CC)(CC)CCCCCCCCCCCCCCCC HPDYVEVTJANPRA-UHFFFAOYSA-M 0.000 description 1
- ZCPCLAPUXMZUCD-UHFFFAOYSA-M dihexadecyl(dimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCC ZCPCLAPUXMZUCD-UHFFFAOYSA-M 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000008282 halocarbons Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000003752 hydrotrope Substances 0.000 description 1
- 150000001261 hydroxy acids Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 108010003855 mesentericopeptidase Proteins 0.000 description 1
- 125000005528 methosulfate group Chemical group 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 108010079522 solysime Proteins 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/50—Perfumes
- C11D3/502—Protected perfumes
- C11D3/507—Compounds releasing perfumes by thermal or chemical activation
-
- 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
-
- 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
- C11D11/00—Special methods for preparing compositions containing mixtures of detergents
- C11D11/0094—Process for making liquid detergent compositions, e.g. slurries, pastes or gels
-
- 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
-
- 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
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Fats And Perfumes (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention provides a fabric softening composition containing a surfactant as fabric softener, a fragrance precursor, as well as an enzyme suitable for cleaving the fragrance precursor. Upon application of a solution of the softening composition to a fabric, the fragrance precursor is cleaved by the enzyme and a desired odor is imparted to the fabric.
Processes for imparting an odor to a fabric using such compositions are also provided.
Processes for imparting an odor to a fabric using such compositions are also provided.
Description
Attorney Docket No. 12982/117615 FABRIC SOFTENING COMPOSITION
FIELD OF THE INVENTION
The present invention relates to a fabric softening composition that includes a surfactant as fabric softener and a fragrance precursor. Processes for preparing a fabric softening composition and imparting odor to a fabric are also provided.
BACKGROUND OF THE INVENTION
The usual process for cleaning fabrics includes washing the fabric with a detergent containing a surfactant, followed by rinsing and drying. Enzymes are incorporated into the detergents to improve the removal of stains. Proteases have been described to be useful in detergents to remove proteinaceous stains (See, e.g., Aunstrup, et al., U.S.
Patent No.
3,723,250). Amylases have been described to be useful in detergent compositions to remove starchy stains (See, e.g., McCarty, et al., U.S. Patent No. 3,627,688).
Lipases have been described to be useful in detergent compositions to improve the removal of fat soiling (See, e.g., Huge-Jensen, et al., U.S. Patent No. 4,810,414). The use of lipase in detergents has been reviewed by H. Andree, et al., J. Applied Biochem. 1980, 2, 218-229. Further, a non-dusting granulate containing a cellulase has been added to a detergent composition in order to reduce the harshness of the laundry (See, e.g., Barbesgaard, et al., U.S. Patent No.
4,435,307).
It is also known that applying an enzyme during the rinsing step, instead of the washing step, improves the enzymatic effect. Advantageously, the enzyme is applied in the last rinsing step together with a fabric softening and/or antistatic agent (such as a cationic surfactant, see, e.g., WO 91/13136). The addition of an enzyme during the last rinsing step improves the removal of fatty matters both with and without a cationic surfactant.
FIELD OF THE INVENTION
The present invention relates to a fabric softening composition that includes a surfactant as fabric softener and a fragrance precursor. Processes for preparing a fabric softening composition and imparting odor to a fabric are also provided.
BACKGROUND OF THE INVENTION
The usual process for cleaning fabrics includes washing the fabric with a detergent containing a surfactant, followed by rinsing and drying. Enzymes are incorporated into the detergents to improve the removal of stains. Proteases have been described to be useful in detergents to remove proteinaceous stains (See, e.g., Aunstrup, et al., U.S.
Patent No.
3,723,250). Amylases have been described to be useful in detergent compositions to remove starchy stains (See, e.g., McCarty, et al., U.S. Patent No. 3,627,688).
Lipases have been described to be useful in detergent compositions to improve the removal of fat soiling (See, e.g., Huge-Jensen, et al., U.S. Patent No. 4,810,414). The use of lipase in detergents has been reviewed by H. Andree, et al., J. Applied Biochem. 1980, 2, 218-229. Further, a non-dusting granulate containing a cellulase has been added to a detergent composition in order to reduce the harshness of the laundry (See, e.g., Barbesgaard, et al., U.S. Patent No.
4,435,307).
It is also known that applying an enzyme during the rinsing step, instead of the washing step, improves the enzymatic effect. Advantageously, the enzyme is applied in the last rinsing step together with a fabric softening and/or antistatic agent (such as a cationic surfactant, see, e.g., WO 91/13136). The addition of an enzyme during the last rinsing step improves the removal of fatty matters both with and without a cationic surfactant.
2 discloses a solid fabric softening composition for use in the rinsing step of a fabric washing process that includes a fabric softening conditioning compound, a lipase, F:\DMS\KCH\GIVAUDAN\A 12982v2.doc and a dispersing agent. Using such a solid fabric softening composition, significant cleaning benefits on white cotton were reportedly obtained while the softening effect was maintained.
A principal strategy currently employed to impart odors to consumer products is the admixing of the fragrance directly into the product. There are, however, several drawbacks to this strategy. The fragrance material can be too volatile, resulting in fragrance loss during manufacturing, storage, and use. Many fragrance materials are also unstable over time. This again results in fragrance loss during storage.
In many consumer products, it is desirable for the fragrance to be released slowly over time. Microencapsulation and inclusion complexes with cyclodextrins have been used to help decrease volatility, improve stability, and provide slow-release properties.
However, these methods are, for a number of reasons, often not successful. In addition, cyclodextrins can be too expensive.
Fragrance precursors for scenting fabrics washed in the presence of a lipase-containing detergent are described in WO 95/04809. Such fragrance precursors are cleaved by the lipase and a single odoriferous compound, either an odoriferous alcohol, aldehyde, or ketone is yielded. Thereby, a prolonged scenting effect on the fabric is obtained.
Despite this advantage, problems remain with the stability of different types of fragrance precursors. This problem was overcome by separating the enzyme and the fragrance precursor and incorporating the enzyme into the detergent and the fragrance precursor into the fabric softening composition. However, using this approach, a scenting effect by the fragrance precursors can only be achieved if an enzyme containing detergent is used in the washing step. As most consumers are not familiar with the detergent and fabric softener technology, it is likely that a fabric softening composition containing a fragrance precursor will be used in combination with a detergent not containing an enzyme, thus rendering the fragrance precursor system useless.
It is also known that during the laundry process some enzyme activity is lost, e.g. due to denaturation, or adsorption of the enzyme to soil. Therefore, the remaining enzyme activity may not be sufficient to cleave the fragrance precursors during the rinsing/drying cycle. In this case too, the precursor technology is not very efficient. This problem was partially overcome by increasing the dosage of enzyme, especially lipase, in the detergent. However, consumers have become increasingly aware of enzymes added to consumer goods which are manufactured by means of genetic engineering. Negative side effects usually associated with these enzymes, e.g. allergic reactions of the skin, have led to the marketing of safe, non-bio detergents. These types of non-bio detergents are not suitable in combination with enzyme cleavable fragrance precursors.
Currently used lipases e.g. LIPOLASE~, remove fatty stains mainly during the last stages of rinsing and drying steps.
Thereby also esters of short chain acids are cleaved leaving an unpleasant smell on the fabric. The latter may be overcome by introduction of enzymes, e.g. lipases, that are especially active during the washing step. However, with these types of new lipases, e.g.
LIPOPRIME~, designed for good stain removal during the washing cycle, a decrease in cleavage of fragrance precursors is observed during the drying cycle compared to LIPOLASE~.
SUMMARY OF THE INVENTION
In summary, the methods and compositions set forth above suffer from various drawbacks in producing a stable, long lasting and user friendly system to impart odor to a fabric. Accordingly, an object of the present invention is to provide a fragrance delivery system which yields a long lasting pleasant odor, especially a fresh odor or a clean scent, on a fabric.
Another object of the present invention is to provide a stable fragrance delivery system.
A principal strategy currently employed to impart odors to consumer products is the admixing of the fragrance directly into the product. There are, however, several drawbacks to this strategy. The fragrance material can be too volatile, resulting in fragrance loss during manufacturing, storage, and use. Many fragrance materials are also unstable over time. This again results in fragrance loss during storage.
In many consumer products, it is desirable for the fragrance to be released slowly over time. Microencapsulation and inclusion complexes with cyclodextrins have been used to help decrease volatility, improve stability, and provide slow-release properties.
However, these methods are, for a number of reasons, often not successful. In addition, cyclodextrins can be too expensive.
Fragrance precursors for scenting fabrics washed in the presence of a lipase-containing detergent are described in WO 95/04809. Such fragrance precursors are cleaved by the lipase and a single odoriferous compound, either an odoriferous alcohol, aldehyde, or ketone is yielded. Thereby, a prolonged scenting effect on the fabric is obtained.
Despite this advantage, problems remain with the stability of different types of fragrance precursors. This problem was overcome by separating the enzyme and the fragrance precursor and incorporating the enzyme into the detergent and the fragrance precursor into the fabric softening composition. However, using this approach, a scenting effect by the fragrance precursors can only be achieved if an enzyme containing detergent is used in the washing step. As most consumers are not familiar with the detergent and fabric softener technology, it is likely that a fabric softening composition containing a fragrance precursor will be used in combination with a detergent not containing an enzyme, thus rendering the fragrance precursor system useless.
It is also known that during the laundry process some enzyme activity is lost, e.g. due to denaturation, or adsorption of the enzyme to soil. Therefore, the remaining enzyme activity may not be sufficient to cleave the fragrance precursors during the rinsing/drying cycle. In this case too, the precursor technology is not very efficient. This problem was partially overcome by increasing the dosage of enzyme, especially lipase, in the detergent. However, consumers have become increasingly aware of enzymes added to consumer goods which are manufactured by means of genetic engineering. Negative side effects usually associated with these enzymes, e.g. allergic reactions of the skin, have led to the marketing of safe, non-bio detergents. These types of non-bio detergents are not suitable in combination with enzyme cleavable fragrance precursors.
Currently used lipases e.g. LIPOLASE~, remove fatty stains mainly during the last stages of rinsing and drying steps.
Thereby also esters of short chain acids are cleaved leaving an unpleasant smell on the fabric. The latter may be overcome by introduction of enzymes, e.g. lipases, that are especially active during the washing step. However, with these types of new lipases, e.g.
LIPOPRIME~, designed for good stain removal during the washing cycle, a decrease in cleavage of fragrance precursors is observed during the drying cycle compared to LIPOLASE~.
SUMMARY OF THE INVENTION
In summary, the methods and compositions set forth above suffer from various drawbacks in producing a stable, long lasting and user friendly system to impart odor to a fabric. Accordingly, an object of the present invention is to provide a fragrance delivery system which yields a long lasting pleasant odor, especially a fresh odor or a clean scent, on a fabric.
Another object of the present invention is to provide a stable fragrance delivery system.
A further object of the present invention is to provide a fragrance delivery system, which works without special measures to be taken by the user.
A further object of the present invention is to avoid the problems of the old delivery systems.
One embodiment of the invention is a fabric softening composition for imparting an odor to a fabric that includes a surfactant, a fragrance precursor, and an enzyme that cleaves the fragrance precursor.
Another embodiment of the invention is a process for preparing a fabric softening composition as set forth above. This process includes mixing the surfactant, fragrance precursor, and enzyme, wherein the enzyme and the fragrance precursor are mixed into the composition last.
A further embodiment of the invention is a process for imparting an odor to a fabric.
This process includes rinsing the fabric with a composition containing a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor.
The present invention also provides a process for imparting an odor to a fabric. This process includes adding a fabric softening composition to the fabric during a rinse step in a fabric cleaning process wherein the fabric softening composition includes a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor.
The enzyme is then allowed to cleave the fragrance precursor to form a fragrance molecule which imparts a fresh, clean, long lasting scent to the fabric.
DETAILED DESCRIPTION OF THE INVENTION
It has been found that a fabric softening composition containing a surfactant as fabric softener, a fragrance precursor, and an enzyme suitable for cleaving the fragrance precursor, upon application to the rinsing step of a fabric cleaning process, imparts a fresh, clean and long lasting scent to the fabric and solves the problems set forth above.
A further object of the present invention is to avoid the problems of the old delivery systems.
One embodiment of the invention is a fabric softening composition for imparting an odor to a fabric that includes a surfactant, a fragrance precursor, and an enzyme that cleaves the fragrance precursor.
Another embodiment of the invention is a process for preparing a fabric softening composition as set forth above. This process includes mixing the surfactant, fragrance precursor, and enzyme, wherein the enzyme and the fragrance precursor are mixed into the composition last.
A further embodiment of the invention is a process for imparting an odor to a fabric.
This process includes rinsing the fabric with a composition containing a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor.
The present invention also provides a process for imparting an odor to a fabric. This process includes adding a fabric softening composition to the fabric during a rinse step in a fabric cleaning process wherein the fabric softening composition includes a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor.
The enzyme is then allowed to cleave the fragrance precursor to form a fragrance molecule which imparts a fresh, clean, long lasting scent to the fabric.
DETAILED DESCRIPTION OF THE INVENTION
It has been found that a fabric softening composition containing a surfactant as fabric softener, a fragrance precursor, and an enzyme suitable for cleaving the fragrance precursor, upon application to the rinsing step of a fabric cleaning process, imparts a fresh, clean and long lasting scent to the fabric and solves the problems set forth above.
The odor obtained on the fabric after using the softening composition of the present invention in the rinsing step is long lasting (up to 2-3 weeks) and is determined by the choice of the fragrance precursor(s).
Surprisingly, it has been found that the fabric softener composition of the invention is stable during storage. The odor develops generally during and/or after rinsing and during the drying cycle and continues for a longer period.
Due to the application of the fragrance precursor and the enzyme in the same composition or delivery system, no special knowledge is needed and no special measures have to be taken to obtain the desired result.
The fabric softening composition of the invention includes at least 0.01 wt%
of one or more fragrance precursors. In the present invention, it is preferred to use from about O.Olwt%
to about l5wt%, such as for example, from about O.lwt% to about lOwt%. It is also preferred to use from about 0.2% to about 2 % per weight of one or more fragrance precursors.
The fabric softening composition also includes an enzyme selected from the group of lipase, cellulase, protease, and amylase. The enzyme is present in the fabric softening composition in the range of 0.001 mg to 5 mg, preferably 0.01 mg to 2 mg of pure enzyme per liter of the fabric softening composition.
The fabric softening composition also includes from about 1 % to about 80% per weight of surfactants and other substances useful in fabric softening compositions and known to the skilled person. Such substances include, for example, preservatives, fragrances, and the like.
In a preferred embodiment, the fabric softening composition contains cationic surfactants. Additionally, the fabric softening composition may contain a non-ionic surfactant to assist in the dispersion of the cationic fabric softener in the water and to improve the rewetability of the fabric. The compositions of the present invention preferably include from about lwt% to about 80wt%, preferably from about 3wt% to about SOwt %, of a cationic surfactant. Diluted liquid compositions preferably contain from about 3wt% to about l5wt%
of a cationic surfactant. Concentrated liquid compositions preferably contain from about l2wt% to about SOwt%, more preferably from about l2wt% to about 35wt% of a cationic surfactant.
The fabric softening composition is preferably a liquid, however, granular, gelatinous or viscous, clear or translucent liquid embodiments are also part of the present invention.
The pH value of the fabric softening composition of the present invention is an important parameter influencing its stability and its resistance to microbial infection. The pH, as defined in the present context, is measured in the neat fabric softening composition at 20°C. For optimum hydrolytic stability, the pH of the neat composition is in the range from about 2.0 to about 5.0, preferably from about 2.0 to 3.5. The pH value of the composition may be adjusted to the desired range by addition of a Bronsted acid, such as for example inorganic mineral acids, carboxylic acids, and alkylsulfonic acids. The fragrance precursors, being preferably of the ester and carbonate type, and the fabric softeners of the ester type, are stable under these acidic conditions in the composition. The acidic pH value also ensures a satisfactory enzyme stability, especially of lipase, cellulase, amylase, and protease. Under these conditions, good stability of fragrance precursors as well as of fabric softener and antistatic agents was observed over a prolonged period of time.
The fabric softening composition of the invention is dissolved or diluted in the rinsing step of the washing cycle and is deposited onto the fabric surface due to the high substantivity of the individual compounds to the fabric. When a pH value of about 7 in the rinsing liquid is reached, the enzyme is activated and the fragrance precursor is cleaved to release the fragrance. The release of the fragrance may start either in the rinsing step or during the drying step where the water content of the fabric is reduced. After drying, the release of the fragrance continues. Depending on the precursors chosen, the fabric has a desired odor, e.g.
fresh and clean, for at least two weeks.
Surprisingly, it has been found that the fabric softener composition of the invention is stable during storage. The odor develops generally during and/or after rinsing and during the drying cycle and continues for a longer period.
Due to the application of the fragrance precursor and the enzyme in the same composition or delivery system, no special knowledge is needed and no special measures have to be taken to obtain the desired result.
The fabric softening composition of the invention includes at least 0.01 wt%
of one or more fragrance precursors. In the present invention, it is preferred to use from about O.Olwt%
to about l5wt%, such as for example, from about O.lwt% to about lOwt%. It is also preferred to use from about 0.2% to about 2 % per weight of one or more fragrance precursors.
The fabric softening composition also includes an enzyme selected from the group of lipase, cellulase, protease, and amylase. The enzyme is present in the fabric softening composition in the range of 0.001 mg to 5 mg, preferably 0.01 mg to 2 mg of pure enzyme per liter of the fabric softening composition.
The fabric softening composition also includes from about 1 % to about 80% per weight of surfactants and other substances useful in fabric softening compositions and known to the skilled person. Such substances include, for example, preservatives, fragrances, and the like.
In a preferred embodiment, the fabric softening composition contains cationic surfactants. Additionally, the fabric softening composition may contain a non-ionic surfactant to assist in the dispersion of the cationic fabric softener in the water and to improve the rewetability of the fabric. The compositions of the present invention preferably include from about lwt% to about 80wt%, preferably from about 3wt% to about SOwt %, of a cationic surfactant. Diluted liquid compositions preferably contain from about 3wt% to about l5wt%
of a cationic surfactant. Concentrated liquid compositions preferably contain from about l2wt% to about SOwt%, more preferably from about l2wt% to about 35wt% of a cationic surfactant.
The fabric softening composition is preferably a liquid, however, granular, gelatinous or viscous, clear or translucent liquid embodiments are also part of the present invention.
The pH value of the fabric softening composition of the present invention is an important parameter influencing its stability and its resistance to microbial infection. The pH, as defined in the present context, is measured in the neat fabric softening composition at 20°C. For optimum hydrolytic stability, the pH of the neat composition is in the range from about 2.0 to about 5.0, preferably from about 2.0 to 3.5. The pH value of the composition may be adjusted to the desired range by addition of a Bronsted acid, such as for example inorganic mineral acids, carboxylic acids, and alkylsulfonic acids. The fragrance precursors, being preferably of the ester and carbonate type, and the fabric softeners of the ester type, are stable under these acidic conditions in the composition. The acidic pH value also ensures a satisfactory enzyme stability, especially of lipase, cellulase, amylase, and protease. Under these conditions, good stability of fragrance precursors as well as of fabric softener and antistatic agents was observed over a prolonged period of time.
The fabric softening composition of the invention is dissolved or diluted in the rinsing step of the washing cycle and is deposited onto the fabric surface due to the high substantivity of the individual compounds to the fabric. When a pH value of about 7 in the rinsing liquid is reached, the enzyme is activated and the fragrance precursor is cleaved to release the fragrance. The release of the fragrance may start either in the rinsing step or during the drying step where the water content of the fabric is reduced. After drying, the release of the fragrance continues. Depending on the precursors chosen, the fabric has a desired odor, e.g.
fresh and clean, for at least two weeks.
Using a detergent containing an enzyme for stain removal during the washing step followed by a fabric softening composition of the present invention during the rinsing step, a clean fabric with a long-lasting, fresh and clean scent may be obtained.
The fabric softening composition of the present invention may also include different fragrance precursors which are cleaved under different conditions, and enzymes that cleave at least one fragrance precursor.
The fabric softening compositions of the present invention may be prepared by combining the components set forth above according to the art. For example, a composition according to the present invention may be prepared by first admixing the surfactants with water at an elevated temperature. After cooling, further components e.g.
preservatives, fragrances, etc. may be added. The fragrance precursors and the enzymes may be added at any stage of the formulation. Preferably the precursors and enzymes are added at the last step of the mixing process. The fragrance precursors) may be added in neat form to the composition or, preferably, dissolved in a suitable solvent. The fragrance precursors may be added in encapsulated, spray-dried, or any other "protected form" known to those skilled in the art. The enzymes) may be added as a liquid or in any other form, e.g.
dried, encapsulated, extruded or spray-dried. It is possible to prepare a coencapsulate, coextrudate or any other form containing both the fragrance precursors(s) and the enzyme(s).
A fragrance precursor in the softening composition of the present invention may be a compound of formula:
YLm R"
wherein Y is a carrier residue, such as a polymer, a carbohydrate or any type of mono-or poly-carboxylic acid, to which a fragrant alcohol, aldehyde, ketone or oxime may be chemically bound;
L is a bivalent linker residue, such as dicarboxylic acids, amino acids, hydroxy acids and the like;
R is the residue of a fragrant alcohol, oxime, or of the enol form of a fragrant aldehyde or ketone;
m is 0 or an integer from 1 to n; and n is an integer > 1 and if n > 1 the residues R may be the same or different.
Fragrance precursors that meet this general formula are described, e.g. in WO 95/04809, in WO 96/02625, in WO 97/16523 or in WO 98/07683.
The following fragrance precursor compounds are preferred in the present invention:
(a) Formula I:
R2 R' HO (CR5R6)~OR~
R3 R4 .. I IO
wherein n is 1, 2 or 3;
R' to R6 are, independently, substituted or unsubstituted alkyl-, alkenyl-, alkinyl-, cycloalkyl-, cycloalkenyl- or aromatic-residues or hydrogen, wherein these residues may in addition contain one or more -O- and /or -C(O)- groups; and R' is a residue of a fragrant alcohol R'OH, wherein one or two rings may be built by the combination of the respective R' to R6 groups and this/these rings) may be further substituted by alkyl-groups;
(b) Formula II:
_g_ O
~ (II) R ~O~X R9 n wherein Rg is the residue of the enol form of an aldehyde or ketone;
X is a saturated or unsaturated bivalent hydrocarbon residue with a straight or branched chain with 1 to 20 carbon atoms optionally containing one or more heteroatoms, such as O, N, S, and/or P and/or a group -C(O)- and/or substituents of the formula -COOY, -OH, -C(O)-, or -NHZ where Y is H, a metal atom or R", and R" is the rest of an alcohol or phenol R"OH or has the same definition as Rg and is the same or different as Rg, R9 is a saturated or unsaturated, substituted or unsubstituted carbocyclic or heterocyclic residue or -COOY, wherein Y is H, a metal atom or R'°, and R'° is the rest of an alcohol or phenol or has the same definition as Rg and is the same or different as R8, and R9 may be H if X is substituted by -OH; and nis0orl;
(c) Formula IIIa:
O_a-~ Si(R'2)a CR'3H-CR'5HAC0(OR'4) (Ills) (d) Formula IIIb:
O_3-a Si(R~2)a CR'SACO(OR'4) CR~3H (Illb) or a mixture of IIa and IIIb, and if any other units) in the siloxanes are present, they are of (e) Formula IV:
R'sbSiO ~ (p z wherein R'Z is a substituted or unsubstituted C,_g alkyl group or a substituted or unsubstituted aryl group;
R'6 is a hydrogen atom, a monovalent C,_g hydrocarbon group or a monovalent C
i-s halogenated hydrocarbon group;
R'3 is a hydrogen atom, a substituted or unsubstituted C,_g alkyl group, a substituted or unsubstituted aryl group, or a bond connecting CR'3 and CR's;
R'S is a hydrogen atom, a substituted or unsubstituted C~_g alkyl group, or a substituted or unsubstituted aryl group;
A is (CR"2)n wherein R" is a substituted or unsubstituted C1-$ alkyl group or a substituted or unsubstituted aryl group, or a hydrogen atom;
n is 0-20, preferably 1 to 10, and each R" is the same or different;
OR'4 is the residue of an olfactive alcohol or of the enol form of an olfactive aldehyde or olfactive ketone;
a is 0, 1 or 2; and bis0, l,2or3;
(f) Formula V:
O
18 ~
R \O- _OZ R19 M
n wherein R'g is the residue of the enol form of an aldehyde or ketone;
R'9 is a saturated or unsaturated, substituted or unsubstituted C,-C3°
aliphatic residue with straight or branched chains optionally having one or more heteroatoms in the chain, the residue of the enol form of an aldehyde or ketone, the residue of an alcohol, -COOY or -OCOOY, wherein Y is H, a metal atom or Rz°, and RZ° is the rest of an alcohol RZ°OH or has the same definition as R'$;
Z is a saturated or unsaturated bivalent hydrocarbon residue with a straight or branched chain with 1 to 30 carbon atoms optionally containing one or more heteroatoms, and/or a group -C(O)- and/or substituents of the formula -COOY, -OCOOY, -OH, -C=O, or -NHz and Y is H, a metal atom or RZ', and RZ' is the rest of an alcohol RZ'OH
or has the same definition as R'8 and is the same or different as R'g; and nis0orl.
The heteroatoms in Z and in R'9, representing a C,-C3° aliphatic residue, may be O, N, S and/or P. The substituents of R'9, representing a C,-C3° aliphatic residue, may be ionic such as -NH3+ or COO-;
(g) Formula VI:
O
y / -O R22 n wherein Y is the residue of an organoleptic ketone or lactone of the formula YH;
Rzz is H or the residue of a mono- or polyalcohol of the formula Rzz-(OH)S
with s >_ 1;
p= 1 or2;
n >_ 1; and q=lor2 wherein if n > l, the residues of Y may be different or the same;
(h) Formula VII:
O R2s R2a ~ C~2R (VII) Rz~ RZS RZa wherein Rz3 is a residue of either an alcohol Rz30H, or a residue of an alcohol Rz30H
which further contains at least one remaining part of formula VII;
Rz4 to Rzg are independently H or substituted or unsubstituted, branched or unbranched alkyl-, alkenyl-, akinyl-, cycloalkyl-, cycloalkenyl-, or aromatic residues, preferably with 1 to 10 C atoms, or Rz4 or Rz5 is COZRz3; and/or at least one of the pairs Rz4+RzS, Rzs+Rz6~ Rzs+Rz', or Rzb+Rz', Rzb+Rzg form a saturated, unsaturated, or aromatic ring with 3 to 7 C atoms, preferably with 5 to 6 C atoms, wherein this/these rings) may be further substituted by one or more alkyl- and/or alkenyl residues and/or by one or more -COZRz9 groups wherein Rz9 is a residue of an alcohol Rz90H, whereby Rz9 is preferably Rz3.
The alcohol Rz30H is preferably organoleptic.
Other conventional components that release fragrant molecules by enzymatic, UV
and/or thermal cleavage from a carrier material may be included in the fabric softening compositions of the present invention.
In the present invention, the fabric softening composition further includes a fabric surfactant as a softener and/or an antistatic agent. In a preferred embodiment of the present invention, the fabric softening and/or antistatic agents are cationic surfactants. Suitable fabric softening compounds are well known to those skilled in the art and are e.g.
described by R.
Puchta, J. American Oil Chem. Soc. 1984, 61, 367-376 or by G.R. Whalley, happi 1995, February, 55-58, which is incorporated by reference as if recited in full herein. Preferred fabric softening agents which are constituents of the rinse added fabric softening compositions of the present invention are exemplified in the following non-limiting examples.
Preferred surfactants are cationic quaternary ammonium salts having two long hydrocarbyl chains, for instance two C$_zg, preferably C,z_za, hydrocarbyl chains. Preferably the hydrocarbyl groups are alkyl or alkenyl groups, which are optionally substituted or interrupted by other groups. Well-known species of substantially water-insoluble quaternary ammonium compounds have the formula:
Rya R33 +
N X-R3~ ~ ~ Rs2 wherein R3' and R3z are independently selected from hydrocarbyl groups of from about 8 to about 28, preferably about 12 to about 24 carbon atoms;
R33 and R34 are hydrocarbyl groups containing from 1 to about 4 carbon atoms;
X is an anion, preferably selected from halide, methosulfate, and ethylsulfate radicals.
Representative examples of these quaternary softeners include ditallow dimethyl ammonium chloride, ditallow dimethyl ammonium methyl sulphate, dihexadecyl dimethyl ammonium chloride, di(hydrogenated tallow) dimethyl ammonium methyl sulfate, dihexadecyl diethyl ammonium chloride, and di(coconut) dimethyl ammonium chloride.
Ditallow dimethyl ammonium chloride, di(hydrogenated tallow) dimethyl ammonium chloride, di(coconut) dimethyl ammonium chloride and di(coconut) dimethyl ammonium methosulfate are preferred examples of the quaternary softeners.
Other suitable quaternary softeners include dialkyl ethoxyl methyl ammonium methosulfate based on soft fatty acid, dialkyl ethoxyl methyl ammonium methosulfate based on hard fatty acid, and a material in which R33 and R34 represent methyl.
Preferably, R3' is C,3_l5, Rsz is CHzCH20COR35 where R35 is stearyl, and X is methosulfate.
The quaternary ammonium compound may be an ester-linked quaternary ammonium compound represented by the formula:
(Rss~H~(CH2)n -T-Rs7lm wherein each R36 group is independently selected from C,_6 hydrocarbyl, such as alkyl, alkenyl or hydroxyalkyl groups;
each R3' group is independently selected from Cg_28 linear or branched hydrocarbyl, such as alkyl or alkenyl groups;
T is -O- C- ~ -C -O- > -N- C- ~ -C -N-n is an integer from 0-5;
m is an integer from 1-4; and X- is an anion which is compatible with fabric softening ingredients, preferably selected from halide, methosulfate and ethylsulfate residues.
A preferred class of surfactants of this type is that of formula:
O +
HO-H2C- Hz ~ /CH2 CH2 O-C-R39 N X
wherein each R39 is a linear or branched alkyl or alkenyl chain containing at least 11 atoms such as tallow; and X~ is as defined above and, in particular, is methosulfate.
A material having R39 of tallow and X- of methosulfate is available from Witco under the trade name REWOQUAT WE 18.
Another example of this type of suitable material has an R39 of partially hardened tallow and X- of methosulfate.
Another preferred class of surfactants containing two ester groups is:
O +
H3 ~ /CH2 CH2 O-C-R4o -HN O X
H C \CH -CH2 O-C-R4o wherein R4° is a linear or branched alkyl or alkenyl residue such as tallow, or partially hardened tallow; and X' is an anion which is compatible with fabric softening. Preferred choices of X- are chloride or methosulfate.
Other ester-linked quaternary ammonium compounds, which may be used in the compositions of the present invention, are those of formula:
,841,4-m N~~CHZ)~-CH-T-R42, X -T-R42 m wherein each R4' is independently selected from C,~ hydrocarbyl, such as alkyl, alkenyl or hydroxyalkyl groups;
each R42 is independently selected from Cg_2g linear or branched hydrocarbyl, such as alkyl and alkenyl groups;
T is as described above;
n is an integer of from 0-5;
m is an integer from 1-4; and X- is an anion preferably selected from halide, methosulfate and ethylsulfate residues.
Another class of preferred water-insoluble cationic fabric softeners are the hydrocarbylimidazolinium salts believed to have the formula:
O
N~ I~ ~ _ R4si \ (CH2)2 -N- C-R X
R~
wherein R43 is a hydrocarbyl group containing from 1 to 4, preferably 1 or 2 carbon atoms;
R46 is a hydrocarbyl group containing from 8 to 25 carbon atoms;
R44 is a linear or branched hydrocarbyl group containing from 8 to 25 carbon atoms;
R45 is hydrogen or a hydrocarbyl containing from 1 to 4 carbon atoms; and X- is an anion, preferably a halide, methosulfate or ethylsulfate.
Preferred imidazolinium salts include 1-methyl-1-(tallowylamido-) ethyl-2-tallowyl-4,5-dihydroimidazolinium methosulfate and 1-methyl-1-(palmitoylamido) ethyl-2-octadecyl-4,5-dihydroimidazolinium chloride. Other useful imidazolinium salts are 2-heptadecyl-1-methyl-1-(2-stearylamido)-ethyl-imidazolinium chloride and 2-lauryl-1-hydroxyethyl-1-oleyl-imidazolinium chloride.
Another class of preferred fabric softeners is an inorganic or organic acid salt of a fabric softening compound of formula:
as _ R -C-H-(CH2)~ N-(CHZ)m N-C-R X
wherein R4' and R4g are independently C,2 to C3o aliphatic hydrocarbon residues;
R'9 is (CHZCHZO)PH, CH3 or H;
n=lto5;
m=lto5;
p = 1 to 10; and X- is an anion which is compatible with fabric softening ingredients.
Another preferred class of fabric softener is a biodegradable fatty ester quaternary ammonium compound of formula:
p +
R5' (CH2)q O-C -R5o -a N O aX
Rsz/ ~ CH -p-2~r C
wherein each RS° independently is an aliphatic hydrocarbon residue having from 8 to 22 carbon atoms;
RS' is (CHz)SRs3 where R53 is an alkoxy carbonyl residue containing from 8 to carbon atoms, benzyl, phenyl, C,-C4 alkyl substituted phenyl, OH or H;
R5z is (CHZ)~Rsa where R54 is benzyl, phenyl, C,-C4 alkyl substituted phenyl, OH, or H;
q, r, s, and t are each independently an integer from 1 to 3; and X- is an anion of valence a.
Other conventional components that have fabric softening effects and/or antistatic effects may also be added to the fabric softening composition of the present invention.
According to the present invention the fabric softening composition further includes an enzyme. Preferably the enzyme is a lipase, a cellulase, a protease, an amylase, or any combination of these agents. However, any other type of enzyme suitable to cleave fragrance precursors used in the present invention may be used.
Lipases of plant or animal origin (e.g. pancreas lipase) may be used in the invention, but microbial lipases are preferred for reasons of economy. Some lipases are known to be active in detergents. Because the conditions in the rinsing step are favorable for most lipases, many other lipases may be used. Examples of lipases that may be used in the present invention include those derived from the following microorganisms, indicated with reference:
Humicola, e.g., H. insolens (US 4,810,414) Pseudomonas, e.g., Ps. cepia or Ps. fluorescens (WO 89/04361) Fusarium, e.g., F. oxysporum (EP 130,064) Mucor (also called Rhizomucor), e.g., M. miehei Candida, e.g., C. cylindracea ( also called C. rugosa) or C. antarctica (WO
88/02775) Preferred lipases are commercially available enzymes, e.g., LIPOLASE~, LIPOLASE
ULTRA~, arid LIPOPRIME~ (Novo Nordisk) Proteases of plant or animal origin may be used in the invention, but microbial proteases are preferred for reasons of economy. Proteases useful in the present invention may, for example, be derived from Bacillus licheniformis. Preferred proteases are commercially available enzymes, e.g. ALCALASE~, SAVINASE~, EVERLASE~ and ESPERASE~ from 1 S Novo Nordisk; PURAFECT~, PURAFECT~ OX, and PROPERASE~ from Genencor.
Amylases of plant or animal origin may be used in the invention, but microbial amylases are preferred for reasons of economy. Amylases useful in the present invention may, for example, be derived from Bacillus subtilis. Preferred amylases are commercially available enzymes, e.g. TERAMYL~, BAN, and DURAMYL~ from Novo Nordisk, and PURASTAR~ ST, and PURASTAR"~ OxAm from Genencor.
Cellulases of plant or animal origin may be used in the invention, but microbial cellullases are preferred for reasons of economy. Cellulases useful in the present invention may, for example, be derived from Humicola insolens. Preferred cellulases are commercially available enzymes, e.g. CELLUZYME~, and CAREZYME~ from Novo Nordisk, and PURADEX~ HA, and Detergent Cellulase L from Genencor.
Compositions of the present invention may also include dispersing agents for assisting the dispersion of the fabric softeners in water. Suitable dispersing agents are known to those skilled in the art and include nonionic surfactants such as alkoxylated fatty alcohols and fatty acid partial esters of polyhydric alcohols, e.g. glycerol, erythrol, sorbitol and the like.
S The compositions of the present invention may be stabilized against microbial infection, preferably by incorporation of a stabilizing agent such as an inorganic salt (e.g.
NaCI), a sugar (e.g. sucrose and glucose), a polyol (e.g. glycerol and propylene glycol), and an alcohol (e.g. ethanol and isopropanol). These stabilizing agents are usually effective in amounts above 10%, especially above 20%. Other examples of suitable stabilizing agents useful in the present invention include organic acids, such as benzoic acid, sorbic acid, and the like, that are generally effective in amounts of O.Olwt%-2% at low pH (below 5). Other stabilizing agents are antioxidants, e.g, sulphur dioxide, 1,2-bent-iso-thiazolin-3-one (BIT), and parabens. Further additives may be added to improve enzyme stability in the fabric softening composition. These additives are selected depending on the nature of the enzymes) used in the fabric softening composition, and are known by those skilled in the art.
The compositions of the invention may further include other optional ingredients such as perfume, perfume carriers, fluorescers, colorants, hydrotropes, antifoaming agents, antiredeposition agents, optical brightening agents, anti-shrinking agents, anti-wrinkle agents, fabric crisping agents, anti-spotting agents, soil release agents, germicides, linear or branched silicones, fungicides, antimicrobial agents, antioxidants, preservatives, dyes, bleaches and bleach precursors, and ironing aids. These optional ingredients, if added, are preferably present at levels up to 5% by weight of the composition.
The following examples are provided to further illustrate the compositions and processes of the present invention, and are not intended to limit the scope of the invention in any way.
EXAMPLES
Example 1 A fabric softening composition of the present invention of the ester quat type, 4 x concentrate, was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 MgCl2 (saturated sol.) Magnesium chloride 1.0 Part B
REWOQUAT WE 18 di-(tallow carboxyethyl) hydroxy-ethyl15.0 methylammonium methosulfate GENAPOL O 100 ethoxylated fatty alcohol 2.0 ANTIFOAM DB 31 0.5 Part C
ISOPROPYL ALCOHOL 3.0 PRESERVATIVE QS
FRAGRANCE PRECURSOR'S 0.5 LIPOLASE~ 100L
While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 2.60.
'~ The Fragrance Precursor used was:
O"O O"O
carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester Example 2 A fabric softening composition of the present invention of the ester quat type, 1 x concentrate, was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 Part B
REWOQUAT WE 18 Di-(tallow carboxyethyl) hydroxy-ethyl6.0 methylammonium methosulfate DOBANOL 25-9 Ethoxylated fatty alcohol C 0.5 ANTIFOAM DB 31 0.1 Part C
MYACIDE BT 30 2-bromo-2-nitropropane 1,3 0.03 diol PROXEL GXL Benzisothiazolinone sodium 0.02 salt FRAGRANCE PRECURSORZ~ 0.5 LIPOLASE~ 100L 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 3.50.
Z~ The Fragrance Precursor used was:
O
O O
O
O-succinic acid (Z)-hex-3-enyl ester 3-methoxycarbonylmethyl-2-pentyl-cyclopent-1-enyl ester Example 3 A fabric softener composition of the present invention of the quat type concentrate was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 CaClz Calcium chloride 0.6 Part B
ARQUAD 2 HT 75 13.0 Part C
DOW CORNING DB 100 Silicone 0.2 FORMALDEHYDE (10%) 0.15 FRAGRANCE PRECURSOR3~ 0.5 LIPOLASE~ 100L 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product is 3.20.
3~ Fragrance Precursor:
O
O
O
O
O
O' succinic acid 3,7-dimethyl-octa-2,6-dienyl ester 3-methoxycarbonylmethyl-2-pentyl-cyclopent-1-enyl ester Example 4 A fabric softener composition of the present invention of the quat type 1 x concentrate was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 Part B
ARQUAD 2 HT 75 4.5 Part C
ISOPROPYL ALCOHOL 0.85 MYACIDE 2-bromo-2-nitropropane 1,3-diol0.03 PROXEL GXL benziosthiazoline sodium salt0.02 FRAGRANCE PRECURSOR4~ 0.5 LIPOLASE~ 100L 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 3.20.
4~ The Fragrance Precursor used was:
2-(Z)-hex-3-enyloxycarbonyloxy-succinc acid 4-(3,7-dimethyl-oct-6-enyl) ester methyl ester.
O
O O~O~v O O
O
Example 5 A fabric softener composition of the present invention of the ester quat type, 4 x concentrate, was formulated as follows:
Ingredients Chemical Name %wt Part A _ DEIONIZED WATER to 100.0 MgCl2 (saturated sol.) Magnesium chloride 1.0 Part B
REWOQUAT WE 18 Di-(tallow carboxyethyl) hydroxy-ethyl15.0 methylammonium methosulfate GENAPOL O 100 Ethoxylated fatty alcohol C 2.0 ANTIFOAM DB 31 0.5 Part C
ISOPROPYL ALCOHOL 3.0 PRESERVATIVE QS
FRAGRANCE PRECURSORS 0.5 SAVINASE~ (16.0 L EX) 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 2.60.
O
~N O
O
O
O
O' 5~ The Fragrance Precursor used was:
(~-hex-3-enyloxycarbonylamino-acetic acid 3-methoxy-carbonylmethyl-2-pentyl-cyclopent-1-enyl ester.
Example 6 Washing and rinsing tests with the fabric softening compositions of the present invention demonstrate the long lasting fragrance delivery.
Fabric: 2 cotton terry towels size: 50x90 cm; weight: 250g/towel.
Washing: Miele WS 5405.
Detergent wash cycle : 40° C (program 4).
Detergent: A-C, as indicated below.
Rinsing: Miele WS 5405.
The fabric softening composition is added to the washing compartment via the dispenser.
Fabric softening composition: D-L, as indicated below.
Dosage of regular fabric softening composition (examples 2 and 4): 110 g.
Dosage of concentrated fabric softening composition (examples 1 and 3): 35 g.
Evaluation: After the washing and rinsing steps the towels are placed in a basket. The odor of the wet towels is evaluated by a panel of 10 perfumers.
The towels are line dried at ambient temperature overnight and are evaluated after 2, 5, 10, and 20 days by a panel of 10 perfumers. The panelists are asked to evaluate each towel and to indicate whether the fragrance material can be perceived. Panelists are also asked to indicate the preference of the two towels being presented, one being the control towel and one being the towel treated with the fabric softening composition of the present invention.
Detergent A: commercially available compact detergent, without enzymes Detergent B: commercially available compact detergent containing about 0.05-0.2%
of lipase Detergent C: detergent A
addition of 0.05% LIPOLASE~ 100T
Fabric softening composition D: according to example 1 Fabric softening composition E: according to example 1 without LIPOLASE~ 100L
Fabric softening composition F: according to example 3 Fabric softening composition G: according to example 3 without LIPOLASE~ 100L
Fabric softening composition H: according to example 2, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor.
Fabric softening composition I: according to example 2, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor, without LIPOLASE~ 100L.
Fabric softening composition K: according to example 4, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor.
Fabric softening composition L: according to example 4, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor, without LIPOLASE~ 100L.
Example 7 Two towels labeled #1 were washed with detergent A and subsequently rinsed with fabric softening composition D. Two other towels labeled #2 were washed with detergent B
and subsequently rinsed with fabric softening composition E, as described in example 6.
In a paired, blind test the panelists were asked to indicate the strength of the fragrance (cis-3-hexenol) and to indicate a preference for towel #1 or towel #2. The fragrance strength was rated as: no sensation, barely detectable, weak, moderate, strong, very strong, strongest imaginable.
Time Strength* Preference Towel # 1 Towel #2 Towel # 1 Towel #2 Wet Moderate Weak 8 2 2 days Strong Moderate 10 0 5 days Strong Weak 10 0 days Moderate Barely detect. 10 0 days Weak no sensation 10 0 * Average of panelist opinion ** Indicated as how many out of the 10 panelists Using the fabric softening composition of the present invention, containing a fragrance precursor for cis-3-hexenol, a fresh and clean green fragrance was perceived up to three 10 weeks. At most evaluation stages, the towels treated with the fabric softening composition of the present invention were preferred by all 10 perfumers participating in the evaluation.
Example 8 Two towels labeled #1 were washed with detergent A and subsequently rinsed with fabric softening composition F, as described in example 6. Two other towels labeled #2 were 15 washed with detergent B and subsequently rinsed with fabric softening composition G, as described in example 6.
In a paired, blind test the panelists were asked to indicate the strength of the fragrance (HEDIONE~ and geraniol) and to indicate a preference for towel # 1 or towel #2. The strength was rated as: no sensation, barely detectable, weak, moderate, strong, very strong, strongest imaginable.
Time Strength* Preference*
Towel # 1 Towel #2 Towel # 1 Towel #2 Wet Moderate Moderate 8 2 2 days Strong Moderate 9 1 days Strong Moderate 10 0 days Moderate Weak 10 0 days Weak Weak 10 0 * Average of panelist opinion 5 * * Indicated as how many out of the 10 panelists Using the fabric softening composition of the present invention, containing a fragrance precursor for HEDIONE~ and geraniol, a fresh and clean floral fragrance was perceived up to three weeks. At most evaluation stages the towels treated with the fabric softening composition of the present invention were preferred by all 10 perfumers participating in the 10 evaluation.
Example 9 Stability test:
According to example 6, towels labeled #1, #2, #3, and #4 were washed using the detergents and softeners given in the table below. All detergents and softeners used were 15 stored in glass bottles at 37°C for 1 month. The towels were line-dried and the strength of cis-3-hexenol, the fragrant material to be released slowly, was evaluated in a blind test by a panel of 10 trained perfumers. The strength was rated as: no sensation, barely detectable, weak, moderate, strong, very strong, strongest imaginable.
Towels Detergent Softener Cis-3-hexenol strength*
24 hours 48 hours # 1 A H Weak Moderate #2 C I Weak Weak #3 A K Weak Moderate #4 C L Weak Weak * Average of panelist opinion After one month of storage, equal or better results in strength were obtained for the fabric softening compositions of the present invention compared to a combination of detergent/softener where the precursor and the enzyme were separated, thus demonstrating the stability of the fabric softening compositions of the present invention.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention and all such modifications are intended to be included within the scope of the following claims.
The fabric softening composition of the present invention may also include different fragrance precursors which are cleaved under different conditions, and enzymes that cleave at least one fragrance precursor.
The fabric softening compositions of the present invention may be prepared by combining the components set forth above according to the art. For example, a composition according to the present invention may be prepared by first admixing the surfactants with water at an elevated temperature. After cooling, further components e.g.
preservatives, fragrances, etc. may be added. The fragrance precursors and the enzymes may be added at any stage of the formulation. Preferably the precursors and enzymes are added at the last step of the mixing process. The fragrance precursors) may be added in neat form to the composition or, preferably, dissolved in a suitable solvent. The fragrance precursors may be added in encapsulated, spray-dried, or any other "protected form" known to those skilled in the art. The enzymes) may be added as a liquid or in any other form, e.g.
dried, encapsulated, extruded or spray-dried. It is possible to prepare a coencapsulate, coextrudate or any other form containing both the fragrance precursors(s) and the enzyme(s).
A fragrance precursor in the softening composition of the present invention may be a compound of formula:
YLm R"
wherein Y is a carrier residue, such as a polymer, a carbohydrate or any type of mono-or poly-carboxylic acid, to which a fragrant alcohol, aldehyde, ketone or oxime may be chemically bound;
L is a bivalent linker residue, such as dicarboxylic acids, amino acids, hydroxy acids and the like;
R is the residue of a fragrant alcohol, oxime, or of the enol form of a fragrant aldehyde or ketone;
m is 0 or an integer from 1 to n; and n is an integer > 1 and if n > 1 the residues R may be the same or different.
Fragrance precursors that meet this general formula are described, e.g. in WO 95/04809, in WO 96/02625, in WO 97/16523 or in WO 98/07683.
The following fragrance precursor compounds are preferred in the present invention:
(a) Formula I:
R2 R' HO (CR5R6)~OR~
R3 R4 .. I IO
wherein n is 1, 2 or 3;
R' to R6 are, independently, substituted or unsubstituted alkyl-, alkenyl-, alkinyl-, cycloalkyl-, cycloalkenyl- or aromatic-residues or hydrogen, wherein these residues may in addition contain one or more -O- and /or -C(O)- groups; and R' is a residue of a fragrant alcohol R'OH, wherein one or two rings may be built by the combination of the respective R' to R6 groups and this/these rings) may be further substituted by alkyl-groups;
(b) Formula II:
_g_ O
~ (II) R ~O~X R9 n wherein Rg is the residue of the enol form of an aldehyde or ketone;
X is a saturated or unsaturated bivalent hydrocarbon residue with a straight or branched chain with 1 to 20 carbon atoms optionally containing one or more heteroatoms, such as O, N, S, and/or P and/or a group -C(O)- and/or substituents of the formula -COOY, -OH, -C(O)-, or -NHZ where Y is H, a metal atom or R", and R" is the rest of an alcohol or phenol R"OH or has the same definition as Rg and is the same or different as Rg, R9 is a saturated or unsaturated, substituted or unsubstituted carbocyclic or heterocyclic residue or -COOY, wherein Y is H, a metal atom or R'°, and R'° is the rest of an alcohol or phenol or has the same definition as Rg and is the same or different as R8, and R9 may be H if X is substituted by -OH; and nis0orl;
(c) Formula IIIa:
O_a-~ Si(R'2)a CR'3H-CR'5HAC0(OR'4) (Ills) (d) Formula IIIb:
O_3-a Si(R~2)a CR'SACO(OR'4) CR~3H (Illb) or a mixture of IIa and IIIb, and if any other units) in the siloxanes are present, they are of (e) Formula IV:
R'sbSiO ~ (p z wherein R'Z is a substituted or unsubstituted C,_g alkyl group or a substituted or unsubstituted aryl group;
R'6 is a hydrogen atom, a monovalent C,_g hydrocarbon group or a monovalent C
i-s halogenated hydrocarbon group;
R'3 is a hydrogen atom, a substituted or unsubstituted C,_g alkyl group, a substituted or unsubstituted aryl group, or a bond connecting CR'3 and CR's;
R'S is a hydrogen atom, a substituted or unsubstituted C~_g alkyl group, or a substituted or unsubstituted aryl group;
A is (CR"2)n wherein R" is a substituted or unsubstituted C1-$ alkyl group or a substituted or unsubstituted aryl group, or a hydrogen atom;
n is 0-20, preferably 1 to 10, and each R" is the same or different;
OR'4 is the residue of an olfactive alcohol or of the enol form of an olfactive aldehyde or olfactive ketone;
a is 0, 1 or 2; and bis0, l,2or3;
(f) Formula V:
O
18 ~
R \O- _OZ R19 M
n wherein R'g is the residue of the enol form of an aldehyde or ketone;
R'9 is a saturated or unsaturated, substituted or unsubstituted C,-C3°
aliphatic residue with straight or branched chains optionally having one or more heteroatoms in the chain, the residue of the enol form of an aldehyde or ketone, the residue of an alcohol, -COOY or -OCOOY, wherein Y is H, a metal atom or Rz°, and RZ° is the rest of an alcohol RZ°OH or has the same definition as R'$;
Z is a saturated or unsaturated bivalent hydrocarbon residue with a straight or branched chain with 1 to 30 carbon atoms optionally containing one or more heteroatoms, and/or a group -C(O)- and/or substituents of the formula -COOY, -OCOOY, -OH, -C=O, or -NHz and Y is H, a metal atom or RZ', and RZ' is the rest of an alcohol RZ'OH
or has the same definition as R'8 and is the same or different as R'g; and nis0orl.
The heteroatoms in Z and in R'9, representing a C,-C3° aliphatic residue, may be O, N, S and/or P. The substituents of R'9, representing a C,-C3° aliphatic residue, may be ionic such as -NH3+ or COO-;
(g) Formula VI:
O
y / -O R22 n wherein Y is the residue of an organoleptic ketone or lactone of the formula YH;
Rzz is H or the residue of a mono- or polyalcohol of the formula Rzz-(OH)S
with s >_ 1;
p= 1 or2;
n >_ 1; and q=lor2 wherein if n > l, the residues of Y may be different or the same;
(h) Formula VII:
O R2s R2a ~ C~2R (VII) Rz~ RZS RZa wherein Rz3 is a residue of either an alcohol Rz30H, or a residue of an alcohol Rz30H
which further contains at least one remaining part of formula VII;
Rz4 to Rzg are independently H or substituted or unsubstituted, branched or unbranched alkyl-, alkenyl-, akinyl-, cycloalkyl-, cycloalkenyl-, or aromatic residues, preferably with 1 to 10 C atoms, or Rz4 or Rz5 is COZRz3; and/or at least one of the pairs Rz4+RzS, Rzs+Rz6~ Rzs+Rz', or Rzb+Rz', Rzb+Rzg form a saturated, unsaturated, or aromatic ring with 3 to 7 C atoms, preferably with 5 to 6 C atoms, wherein this/these rings) may be further substituted by one or more alkyl- and/or alkenyl residues and/or by one or more -COZRz9 groups wherein Rz9 is a residue of an alcohol Rz90H, whereby Rz9 is preferably Rz3.
The alcohol Rz30H is preferably organoleptic.
Other conventional components that release fragrant molecules by enzymatic, UV
and/or thermal cleavage from a carrier material may be included in the fabric softening compositions of the present invention.
In the present invention, the fabric softening composition further includes a fabric surfactant as a softener and/or an antistatic agent. In a preferred embodiment of the present invention, the fabric softening and/or antistatic agents are cationic surfactants. Suitable fabric softening compounds are well known to those skilled in the art and are e.g.
described by R.
Puchta, J. American Oil Chem. Soc. 1984, 61, 367-376 or by G.R. Whalley, happi 1995, February, 55-58, which is incorporated by reference as if recited in full herein. Preferred fabric softening agents which are constituents of the rinse added fabric softening compositions of the present invention are exemplified in the following non-limiting examples.
Preferred surfactants are cationic quaternary ammonium salts having two long hydrocarbyl chains, for instance two C$_zg, preferably C,z_za, hydrocarbyl chains. Preferably the hydrocarbyl groups are alkyl or alkenyl groups, which are optionally substituted or interrupted by other groups. Well-known species of substantially water-insoluble quaternary ammonium compounds have the formula:
Rya R33 +
N X-R3~ ~ ~ Rs2 wherein R3' and R3z are independently selected from hydrocarbyl groups of from about 8 to about 28, preferably about 12 to about 24 carbon atoms;
R33 and R34 are hydrocarbyl groups containing from 1 to about 4 carbon atoms;
X is an anion, preferably selected from halide, methosulfate, and ethylsulfate radicals.
Representative examples of these quaternary softeners include ditallow dimethyl ammonium chloride, ditallow dimethyl ammonium methyl sulphate, dihexadecyl dimethyl ammonium chloride, di(hydrogenated tallow) dimethyl ammonium methyl sulfate, dihexadecyl diethyl ammonium chloride, and di(coconut) dimethyl ammonium chloride.
Ditallow dimethyl ammonium chloride, di(hydrogenated tallow) dimethyl ammonium chloride, di(coconut) dimethyl ammonium chloride and di(coconut) dimethyl ammonium methosulfate are preferred examples of the quaternary softeners.
Other suitable quaternary softeners include dialkyl ethoxyl methyl ammonium methosulfate based on soft fatty acid, dialkyl ethoxyl methyl ammonium methosulfate based on hard fatty acid, and a material in which R33 and R34 represent methyl.
Preferably, R3' is C,3_l5, Rsz is CHzCH20COR35 where R35 is stearyl, and X is methosulfate.
The quaternary ammonium compound may be an ester-linked quaternary ammonium compound represented by the formula:
(Rss~H~(CH2)n -T-Rs7lm wherein each R36 group is independently selected from C,_6 hydrocarbyl, such as alkyl, alkenyl or hydroxyalkyl groups;
each R3' group is independently selected from Cg_28 linear or branched hydrocarbyl, such as alkyl or alkenyl groups;
T is -O- C- ~ -C -O- > -N- C- ~ -C -N-n is an integer from 0-5;
m is an integer from 1-4; and X- is an anion which is compatible with fabric softening ingredients, preferably selected from halide, methosulfate and ethylsulfate residues.
A preferred class of surfactants of this type is that of formula:
O +
HO-H2C- Hz ~ /CH2 CH2 O-C-R39 N X
wherein each R39 is a linear or branched alkyl or alkenyl chain containing at least 11 atoms such as tallow; and X~ is as defined above and, in particular, is methosulfate.
A material having R39 of tallow and X- of methosulfate is available from Witco under the trade name REWOQUAT WE 18.
Another example of this type of suitable material has an R39 of partially hardened tallow and X- of methosulfate.
Another preferred class of surfactants containing two ester groups is:
O +
H3 ~ /CH2 CH2 O-C-R4o -HN O X
H C \CH -CH2 O-C-R4o wherein R4° is a linear or branched alkyl or alkenyl residue such as tallow, or partially hardened tallow; and X' is an anion which is compatible with fabric softening. Preferred choices of X- are chloride or methosulfate.
Other ester-linked quaternary ammonium compounds, which may be used in the compositions of the present invention, are those of formula:
,841,4-m N~~CHZ)~-CH-T-R42, X -T-R42 m wherein each R4' is independently selected from C,~ hydrocarbyl, such as alkyl, alkenyl or hydroxyalkyl groups;
each R42 is independently selected from Cg_2g linear or branched hydrocarbyl, such as alkyl and alkenyl groups;
T is as described above;
n is an integer of from 0-5;
m is an integer from 1-4; and X- is an anion preferably selected from halide, methosulfate and ethylsulfate residues.
Another class of preferred water-insoluble cationic fabric softeners are the hydrocarbylimidazolinium salts believed to have the formula:
O
N~ I~ ~ _ R4si \ (CH2)2 -N- C-R X
R~
wherein R43 is a hydrocarbyl group containing from 1 to 4, preferably 1 or 2 carbon atoms;
R46 is a hydrocarbyl group containing from 8 to 25 carbon atoms;
R44 is a linear or branched hydrocarbyl group containing from 8 to 25 carbon atoms;
R45 is hydrogen or a hydrocarbyl containing from 1 to 4 carbon atoms; and X- is an anion, preferably a halide, methosulfate or ethylsulfate.
Preferred imidazolinium salts include 1-methyl-1-(tallowylamido-) ethyl-2-tallowyl-4,5-dihydroimidazolinium methosulfate and 1-methyl-1-(palmitoylamido) ethyl-2-octadecyl-4,5-dihydroimidazolinium chloride. Other useful imidazolinium salts are 2-heptadecyl-1-methyl-1-(2-stearylamido)-ethyl-imidazolinium chloride and 2-lauryl-1-hydroxyethyl-1-oleyl-imidazolinium chloride.
Another class of preferred fabric softeners is an inorganic or organic acid salt of a fabric softening compound of formula:
as _ R -C-H-(CH2)~ N-(CHZ)m N-C-R X
wherein R4' and R4g are independently C,2 to C3o aliphatic hydrocarbon residues;
R'9 is (CHZCHZO)PH, CH3 or H;
n=lto5;
m=lto5;
p = 1 to 10; and X- is an anion which is compatible with fabric softening ingredients.
Another preferred class of fabric softener is a biodegradable fatty ester quaternary ammonium compound of formula:
p +
R5' (CH2)q O-C -R5o -a N O aX
Rsz/ ~ CH -p-2~r C
wherein each RS° independently is an aliphatic hydrocarbon residue having from 8 to 22 carbon atoms;
RS' is (CHz)SRs3 where R53 is an alkoxy carbonyl residue containing from 8 to carbon atoms, benzyl, phenyl, C,-C4 alkyl substituted phenyl, OH or H;
R5z is (CHZ)~Rsa where R54 is benzyl, phenyl, C,-C4 alkyl substituted phenyl, OH, or H;
q, r, s, and t are each independently an integer from 1 to 3; and X- is an anion of valence a.
Other conventional components that have fabric softening effects and/or antistatic effects may also be added to the fabric softening composition of the present invention.
According to the present invention the fabric softening composition further includes an enzyme. Preferably the enzyme is a lipase, a cellulase, a protease, an amylase, or any combination of these agents. However, any other type of enzyme suitable to cleave fragrance precursors used in the present invention may be used.
Lipases of plant or animal origin (e.g. pancreas lipase) may be used in the invention, but microbial lipases are preferred for reasons of economy. Some lipases are known to be active in detergents. Because the conditions in the rinsing step are favorable for most lipases, many other lipases may be used. Examples of lipases that may be used in the present invention include those derived from the following microorganisms, indicated with reference:
Humicola, e.g., H. insolens (US 4,810,414) Pseudomonas, e.g., Ps. cepia or Ps. fluorescens (WO 89/04361) Fusarium, e.g., F. oxysporum (EP 130,064) Mucor (also called Rhizomucor), e.g., M. miehei Candida, e.g., C. cylindracea ( also called C. rugosa) or C. antarctica (WO
88/02775) Preferred lipases are commercially available enzymes, e.g., LIPOLASE~, LIPOLASE
ULTRA~, arid LIPOPRIME~ (Novo Nordisk) Proteases of plant or animal origin may be used in the invention, but microbial proteases are preferred for reasons of economy. Proteases useful in the present invention may, for example, be derived from Bacillus licheniformis. Preferred proteases are commercially available enzymes, e.g. ALCALASE~, SAVINASE~, EVERLASE~ and ESPERASE~ from 1 S Novo Nordisk; PURAFECT~, PURAFECT~ OX, and PROPERASE~ from Genencor.
Amylases of plant or animal origin may be used in the invention, but microbial amylases are preferred for reasons of economy. Amylases useful in the present invention may, for example, be derived from Bacillus subtilis. Preferred amylases are commercially available enzymes, e.g. TERAMYL~, BAN, and DURAMYL~ from Novo Nordisk, and PURASTAR~ ST, and PURASTAR"~ OxAm from Genencor.
Cellulases of plant or animal origin may be used in the invention, but microbial cellullases are preferred for reasons of economy. Cellulases useful in the present invention may, for example, be derived from Humicola insolens. Preferred cellulases are commercially available enzymes, e.g. CELLUZYME~, and CAREZYME~ from Novo Nordisk, and PURADEX~ HA, and Detergent Cellulase L from Genencor.
Compositions of the present invention may also include dispersing agents for assisting the dispersion of the fabric softeners in water. Suitable dispersing agents are known to those skilled in the art and include nonionic surfactants such as alkoxylated fatty alcohols and fatty acid partial esters of polyhydric alcohols, e.g. glycerol, erythrol, sorbitol and the like.
S The compositions of the present invention may be stabilized against microbial infection, preferably by incorporation of a stabilizing agent such as an inorganic salt (e.g.
NaCI), a sugar (e.g. sucrose and glucose), a polyol (e.g. glycerol and propylene glycol), and an alcohol (e.g. ethanol and isopropanol). These stabilizing agents are usually effective in amounts above 10%, especially above 20%. Other examples of suitable stabilizing agents useful in the present invention include organic acids, such as benzoic acid, sorbic acid, and the like, that are generally effective in amounts of O.Olwt%-2% at low pH (below 5). Other stabilizing agents are antioxidants, e.g, sulphur dioxide, 1,2-bent-iso-thiazolin-3-one (BIT), and parabens. Further additives may be added to improve enzyme stability in the fabric softening composition. These additives are selected depending on the nature of the enzymes) used in the fabric softening composition, and are known by those skilled in the art.
The compositions of the invention may further include other optional ingredients such as perfume, perfume carriers, fluorescers, colorants, hydrotropes, antifoaming agents, antiredeposition agents, optical brightening agents, anti-shrinking agents, anti-wrinkle agents, fabric crisping agents, anti-spotting agents, soil release agents, germicides, linear or branched silicones, fungicides, antimicrobial agents, antioxidants, preservatives, dyes, bleaches and bleach precursors, and ironing aids. These optional ingredients, if added, are preferably present at levels up to 5% by weight of the composition.
The following examples are provided to further illustrate the compositions and processes of the present invention, and are not intended to limit the scope of the invention in any way.
EXAMPLES
Example 1 A fabric softening composition of the present invention of the ester quat type, 4 x concentrate, was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 MgCl2 (saturated sol.) Magnesium chloride 1.0 Part B
REWOQUAT WE 18 di-(tallow carboxyethyl) hydroxy-ethyl15.0 methylammonium methosulfate GENAPOL O 100 ethoxylated fatty alcohol 2.0 ANTIFOAM DB 31 0.5 Part C
ISOPROPYL ALCOHOL 3.0 PRESERVATIVE QS
FRAGRANCE PRECURSOR'S 0.5 LIPOLASE~ 100L
While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 2.60.
'~ The Fragrance Precursor used was:
O"O O"O
carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester Example 2 A fabric softening composition of the present invention of the ester quat type, 1 x concentrate, was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 Part B
REWOQUAT WE 18 Di-(tallow carboxyethyl) hydroxy-ethyl6.0 methylammonium methosulfate DOBANOL 25-9 Ethoxylated fatty alcohol C 0.5 ANTIFOAM DB 31 0.1 Part C
MYACIDE BT 30 2-bromo-2-nitropropane 1,3 0.03 diol PROXEL GXL Benzisothiazolinone sodium 0.02 salt FRAGRANCE PRECURSORZ~ 0.5 LIPOLASE~ 100L 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 3.50.
Z~ The Fragrance Precursor used was:
O
O O
O
O-succinic acid (Z)-hex-3-enyl ester 3-methoxycarbonylmethyl-2-pentyl-cyclopent-1-enyl ester Example 3 A fabric softener composition of the present invention of the quat type concentrate was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 CaClz Calcium chloride 0.6 Part B
ARQUAD 2 HT 75 13.0 Part C
DOW CORNING DB 100 Silicone 0.2 FORMALDEHYDE (10%) 0.15 FRAGRANCE PRECURSOR3~ 0.5 LIPOLASE~ 100L 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product is 3.20.
3~ Fragrance Precursor:
O
O
O
O
O
O' succinic acid 3,7-dimethyl-octa-2,6-dienyl ester 3-methoxycarbonylmethyl-2-pentyl-cyclopent-1-enyl ester Example 4 A fabric softener composition of the present invention of the quat type 1 x concentrate was formulated as follows:
Ingredients Chemical Name %wt Part A
DEIONIZED WATER to 100.0 Part B
ARQUAD 2 HT 75 4.5 Part C
ISOPROPYL ALCOHOL 0.85 MYACIDE 2-bromo-2-nitropropane 1,3-diol0.03 PROXEL GXL benziosthiazoline sodium salt0.02 FRAGRANCE PRECURSOR4~ 0.5 LIPOLASE~ 100L 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 3.20.
4~ The Fragrance Precursor used was:
2-(Z)-hex-3-enyloxycarbonyloxy-succinc acid 4-(3,7-dimethyl-oct-6-enyl) ester methyl ester.
O
O O~O~v O O
O
Example 5 A fabric softener composition of the present invention of the ester quat type, 4 x concentrate, was formulated as follows:
Ingredients Chemical Name %wt Part A _ DEIONIZED WATER to 100.0 MgCl2 (saturated sol.) Magnesium chloride 1.0 Part B
REWOQUAT WE 18 Di-(tallow carboxyethyl) hydroxy-ethyl15.0 methylammonium methosulfate GENAPOL O 100 Ethoxylated fatty alcohol C 2.0 ANTIFOAM DB 31 0.5 Part C
ISOPROPYL ALCOHOL 3.0 PRESERVATIVE QS
FRAGRANCE PRECURSORS 0.5 SAVINASE~ (16.0 L EX) 0.05 While stirring and heating to 65°C, part A was mixed with part B
(preheated to 65°C).
After cooling to room temperature, part C was added to the mixture of A and B.
The pH value of the finished product was 2.60.
O
~N O
O
O
O
O' 5~ The Fragrance Precursor used was:
(~-hex-3-enyloxycarbonylamino-acetic acid 3-methoxy-carbonylmethyl-2-pentyl-cyclopent-1-enyl ester.
Example 6 Washing and rinsing tests with the fabric softening compositions of the present invention demonstrate the long lasting fragrance delivery.
Fabric: 2 cotton terry towels size: 50x90 cm; weight: 250g/towel.
Washing: Miele WS 5405.
Detergent wash cycle : 40° C (program 4).
Detergent: A-C, as indicated below.
Rinsing: Miele WS 5405.
The fabric softening composition is added to the washing compartment via the dispenser.
Fabric softening composition: D-L, as indicated below.
Dosage of regular fabric softening composition (examples 2 and 4): 110 g.
Dosage of concentrated fabric softening composition (examples 1 and 3): 35 g.
Evaluation: After the washing and rinsing steps the towels are placed in a basket. The odor of the wet towels is evaluated by a panel of 10 perfumers.
The towels are line dried at ambient temperature overnight and are evaluated after 2, 5, 10, and 20 days by a panel of 10 perfumers. The panelists are asked to evaluate each towel and to indicate whether the fragrance material can be perceived. Panelists are also asked to indicate the preference of the two towels being presented, one being the control towel and one being the towel treated with the fabric softening composition of the present invention.
Detergent A: commercially available compact detergent, without enzymes Detergent B: commercially available compact detergent containing about 0.05-0.2%
of lipase Detergent C: detergent A
addition of 0.05% LIPOLASE~ 100T
Fabric softening composition D: according to example 1 Fabric softening composition E: according to example 1 without LIPOLASE~ 100L
Fabric softening composition F: according to example 3 Fabric softening composition G: according to example 3 without LIPOLASE~ 100L
Fabric softening composition H: according to example 2, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor.
Fabric softening composition I: according to example 2, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor, without LIPOLASE~ 100L.
Fabric softening composition K: according to example 4, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor.
Fabric softening composition L: according to example 4, containing 0.3 % of Carbonic acid 2,3-bis-[Z]-hex-3-enyloxycarbonyloxy-propyl ester [Z]-hex-3-enyl ester ('~) as the fragrance precursor, without LIPOLASE~ 100L.
Example 7 Two towels labeled #1 were washed with detergent A and subsequently rinsed with fabric softening composition D. Two other towels labeled #2 were washed with detergent B
and subsequently rinsed with fabric softening composition E, as described in example 6.
In a paired, blind test the panelists were asked to indicate the strength of the fragrance (cis-3-hexenol) and to indicate a preference for towel #1 or towel #2. The fragrance strength was rated as: no sensation, barely detectable, weak, moderate, strong, very strong, strongest imaginable.
Time Strength* Preference Towel # 1 Towel #2 Towel # 1 Towel #2 Wet Moderate Weak 8 2 2 days Strong Moderate 10 0 5 days Strong Weak 10 0 days Moderate Barely detect. 10 0 days Weak no sensation 10 0 * Average of panelist opinion ** Indicated as how many out of the 10 panelists Using the fabric softening composition of the present invention, containing a fragrance precursor for cis-3-hexenol, a fresh and clean green fragrance was perceived up to three 10 weeks. At most evaluation stages, the towels treated with the fabric softening composition of the present invention were preferred by all 10 perfumers participating in the evaluation.
Example 8 Two towels labeled #1 were washed with detergent A and subsequently rinsed with fabric softening composition F, as described in example 6. Two other towels labeled #2 were 15 washed with detergent B and subsequently rinsed with fabric softening composition G, as described in example 6.
In a paired, blind test the panelists were asked to indicate the strength of the fragrance (HEDIONE~ and geraniol) and to indicate a preference for towel # 1 or towel #2. The strength was rated as: no sensation, barely detectable, weak, moderate, strong, very strong, strongest imaginable.
Time Strength* Preference*
Towel # 1 Towel #2 Towel # 1 Towel #2 Wet Moderate Moderate 8 2 2 days Strong Moderate 9 1 days Strong Moderate 10 0 days Moderate Weak 10 0 days Weak Weak 10 0 * Average of panelist opinion 5 * * Indicated as how many out of the 10 panelists Using the fabric softening composition of the present invention, containing a fragrance precursor for HEDIONE~ and geraniol, a fresh and clean floral fragrance was perceived up to three weeks. At most evaluation stages the towels treated with the fabric softening composition of the present invention were preferred by all 10 perfumers participating in the 10 evaluation.
Example 9 Stability test:
According to example 6, towels labeled #1, #2, #3, and #4 were washed using the detergents and softeners given in the table below. All detergents and softeners used were 15 stored in glass bottles at 37°C for 1 month. The towels were line-dried and the strength of cis-3-hexenol, the fragrant material to be released slowly, was evaluated in a blind test by a panel of 10 trained perfumers. The strength was rated as: no sensation, barely detectable, weak, moderate, strong, very strong, strongest imaginable.
Towels Detergent Softener Cis-3-hexenol strength*
24 hours 48 hours # 1 A H Weak Moderate #2 C I Weak Weak #3 A K Weak Moderate #4 C L Weak Weak * Average of panelist opinion After one month of storage, equal or better results in strength were obtained for the fabric softening compositions of the present invention compared to a combination of detergent/softener where the precursor and the enzyme were separated, thus demonstrating the stability of the fabric softening compositions of the present invention.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention and all such modifications are intended to be included within the scope of the following claims.
Claims (15)
1. A fabric softening composition for imparting an odor to a fabric comprising: a surfactant, a fragrance precursor, and an enzyme that cleaves the fragrance precursor.
2. A composition according to claim 1 further comprising 1 to 80% by weight of a surfactant selected from the group consisting of anionic and cationic surfactants.
3. A composition according to claim 1 wherein the enzyme is selected from the group consisting of proteases, amylases, lipases, cellulases, and combinations thereof.
4. A composition according to claim 1 wherein the fragrance precursor is of the formula:
YLm Rn wherein Y is a carrier residue, L is a bivalent linker residue, m is O or an integer 1 to n, R is a residue of a fragrance molecule, yielding upon cleavage a fragrance RH and n is an integer ~
1.
YLm Rn wherein Y is a carrier residue, L is a bivalent linker residue, m is O or an integer 1 to n, R is a residue of a fragrance molecule, yielding upon cleavage a fragrance RH and n is an integer ~
1.
5. A composition according to claim 4 wherein R is a residue of a fragrant alcohol, oxime, or residue of the enol form of an aldehyde or ketone.
6. A composition according to claim 1 wherein the fragrance precursor is cleaved by the enzyme.
7. A composition according to claim 6 wherein the enzyme cleaves the fragrance precursor in response to heat, moisture, UV, and increased pH.
8. A composition according to claim 1 wherein the enzyme is active at a water concentration of below 100% based on the dry weight of the dry fabric.
9. A composition according to claim 1 wherein 0.01 to 15% per weight of the composition is the fragrance precursor.
10. A composition according to claim 1 having a pH value of ~ 5Ø
11. A composition according to claim 1 comprising a Bronsted acid.
12. A composition according to claim 1 wherein the composition is in liquid form.
13. A process for preparing a fabric softening composition according to claim comprising mixing the surfactant, fragrance precursor, and enzyme, wherein the enzyme and the fragrance precursor are mixed into the composition last.
14. A process for imparting an odor to a fabric comprising rinsing the fabric with a composition comprising a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor.
15. A process for imparting an odor to a fabric comprising:
(a) adding a fabric softening composition to the fabric during a rinse step in a fabric cleaning process wherein the fabric softening composition comprises a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor;
and (b) allowing the enzyme to cleave the fragrance precursor to form a fragrance molecule which imparts a fresh, clean, long lasting scent to the fabric.
(a) adding a fabric softening composition to the fabric during a rinse step in a fabric cleaning process wherein the fabric softening composition comprises a surfactant, a fragrance precursor, and an enzyme that will cleave the fragrance precursor;
and (b) allowing the enzyme to cleave the fragrance precursor to form a fragrance molecule which imparts a fresh, clean, long lasting scent to the fabric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99810739.5 | 1999-08-18 | ||
| EP99810739 | 1999-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2316503A1 true CA2316503A1 (en) | 2001-02-18 |
Family
ID=8242981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2316503A Abandoned CA2316503A1 (en) | 1999-08-18 | 2000-08-17 | Fabric softener composition |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JP3352072B2 (en) |
| KR (1) | KR20010049830A (en) |
| CN (1) | CN1285433A (en) |
| AT (1) | ATE223475T1 (en) |
| AU (1) | AU4259900A (en) |
| BR (1) | BR0003647A (en) |
| CA (1) | CA2316503A1 (en) |
| DE (1) | DE60000397T2 (en) |
| ID (1) | ID26933A (en) |
| MX (1) | MXPA00007075A (en) |
| SG (1) | SG109423A1 (en) |
| ZA (1) | ZA200002703B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE409512T1 (en) * | 2001-12-13 | 2008-10-15 | Firmenich & Cie | COMPOUNDS FOR THE CONTROLLED RELEASE OF ACTIVE MOLECULES |
| JP5396213B2 (en) * | 2009-09-16 | 2014-01-22 | 花王株式会社 | Perfume composition for softener |
| KR101369087B1 (en) * | 2012-07-17 | 2014-03-03 | 한국타이어 주식회사 | Radial Tire capable of Detecting Deformation of Tire Bead |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5649979A (en) * | 1993-08-09 | 1997-07-22 | Firmenich S.A. | Process for perfuming textiles |
| EP0887335A1 (en) * | 1997-06-23 | 1998-12-30 | Givaudan-Roure (International) S.A. | Precursor compounds |
-
2000
- 2000-05-22 AT AT00110814T patent/ATE223475T1/en not_active IP Right Cessation
- 2000-05-22 DE DE60000397T patent/DE60000397T2/en not_active Expired - Fee Related
- 2000-05-30 ZA ZA200002703A patent/ZA200002703B/en unknown
- 2000-05-31 SG SG200003036A patent/SG109423A1/en unknown
- 2000-06-22 AU AU42599/00A patent/AU4259900A/en not_active Abandoned
- 2000-07-03 ID IDP20000553D patent/ID26933A/en unknown
- 2000-07-19 MX MXPA00007075A patent/MXPA00007075A/en unknown
- 2000-07-21 KR KR1020000041840A patent/KR20010049830A/en not_active Application Discontinuation
- 2000-07-25 JP JP2000224202A patent/JP3352072B2/en not_active Expired - Fee Related
- 2000-08-14 CN CN00122776A patent/CN1285433A/en active Pending
- 2000-08-17 CA CA2316503A patent/CA2316503A1/en not_active Abandoned
- 2000-08-17 BR BR0003647-1A patent/BR0003647A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE223475T1 (en) | 2002-09-15 |
| JP3352072B2 (en) | 2002-12-03 |
| DE60000397D1 (en) | 2002-10-10 |
| BR0003647A (en) | 2001-03-27 |
| CN1285433A (en) | 2001-02-28 |
| ID26933A (en) | 2001-02-22 |
| KR20010049830A (en) | 2001-06-15 |
| ZA200002703B (en) | 2000-11-29 |
| DE60000397T2 (en) | 2003-05-22 |
| MXPA00007075A (en) | 2002-04-24 |
| JP2001081666A (en) | 2001-03-27 |
| AU4259900A (en) | 2001-04-12 |
| SG109423A1 (en) | 2005-03-30 |
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