EP2294169B1 - Laundry treatment compositions - Google Patents
Laundry treatment compositions Download PDFInfo
- Publication number
- EP2294169B1 EP2294169B1 EP09769082A EP09769082A EP2294169B1 EP 2294169 B1 EP2294169 B1 EP 2294169B1 EP 09769082 A EP09769082 A EP 09769082A EP 09769082 A EP09769082 A EP 09769082A EP 2294169 B1 EP2294169 B1 EP 2294169B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- softening
- silicone
- granules
- solid
- granule
- 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.)
- Not-in-force
Links
- 239000000203 mixture Substances 0.000 title claims description 56
- 239000008187 granular material Substances 0.000 claims description 93
- 229920001296 polysiloxane Polymers 0.000 claims description 87
- 150000004676 glycans Chemical class 0.000 claims description 52
- 229920001282 polysaccharide Polymers 0.000 claims description 49
- 239000005017 polysaccharide Substances 0.000 claims description 49
- 239000000839 emulsion Substances 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- -1 alkaline earth metal salts Chemical class 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 29
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 27
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical class [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 21
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- 239000004094 surface-active agent Substances 0.000 claims description 21
- 229920000161 Locust bean gum Polymers 0.000 claims description 16
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- 238000001035 drying Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 229910052783 alkali metal Inorganic materials 0.000 claims description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 11
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 10
- 239000004753 textile Substances 0.000 claims description 10
- 150000001340 alkali metals Chemical class 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 7
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- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 13
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- VRVDFJOCCWSFLI-UHFFFAOYSA-K trisodium 3-[[4-[(6-anilino-1-hydroxy-3-sulfonatonaphthalen-2-yl)diazenyl]-5-methoxy-2-methylphenyl]diazenyl]naphthalene-1,5-disulfonate Chemical compound [Na+].[Na+].[Na+].COc1cc(N=Nc2cc(c3cccc(c3c2)S([O-])(=O)=O)S([O-])(=O)=O)c(C)cc1N=Nc1c(O)c2ccc(Nc3ccccc3)cc2cc1S([O-])(=O)=O VRVDFJOCCWSFLI-UHFFFAOYSA-K 0.000 description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 8
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- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 4
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- 229920000742 Cotton Polymers 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
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- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000000987 azo dye Substances 0.000 description 3
- 238000007385 chemical modification Methods 0.000 description 3
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- 239000007850 fluorescent dye Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
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- 241000894007 species Species 0.000 description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- 102000005575 Cellulases Human genes 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
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- 235000019418 amylase Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
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- 150000001768 cations Chemical class 0.000 description 2
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- 239000002280 amphoteric surfactant Substances 0.000 description 1
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- 239000001000 anthraquinone dye Substances 0.000 description 1
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- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
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- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000005323 carbonate salts Chemical group 0.000 description 1
- MMCOUVMKNAHQOY-UHFFFAOYSA-N carbonoperoxoic acid Chemical compound OOC(O)=O MMCOUVMKNAHQOY-UHFFFAOYSA-N 0.000 description 1
- PFKFTWBEEFSNDU-UHFFFAOYSA-N carbonyldiimidazole Chemical compound C1=CN=CN1C(=O)N1C=CN=C1 PFKFTWBEEFSNDU-UHFFFAOYSA-N 0.000 description 1
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- 125000002091 cationic group Chemical group 0.000 description 1
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- 239000001913 cellulose Substances 0.000 description 1
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- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000010500 citrus oil Substances 0.000 description 1
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- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000009990 desizing Methods 0.000 description 1
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- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- NJPXFJXCALXJCX-UHFFFAOYSA-L disodium 7-anilino-3-[[4-[(2,4-dimethyl-6-sulfonatophenyl)diazenyl]-2,5-dimethylphenyl]diazenyl]-4-hydroxynaphthalene-2-sulfonate Chemical compound [Na+].[Na+].Cc1cc(C)c(N=Nc2cc(C)c(cc2C)N=Nc2c(O)c3ccc(Nc4ccccc4)cc3cc2S([O-])(=O)=O)c(c1)S([O-])(=O)=O NJPXFJXCALXJCX-UHFFFAOYSA-L 0.000 description 1
- LARMRMCFZNGNNX-UHFFFAOYSA-L disodium 7-anilino-3-[[4-[(2,4-dimethyl-6-sulfonatophenyl)diazenyl]-2-methoxy-5-methylphenyl]diazenyl]-4-hydroxynaphthalene-2-sulfonate Chemical compound [Na+].[Na+].COc1cc(N=Nc2c(C)cc(C)cc2S([O-])(=O)=O)c(C)cc1N=Nc1c(O)c2ccc(Nc3ccccc3)cc2cc1S([O-])(=O)=O LARMRMCFZNGNNX-UHFFFAOYSA-L 0.000 description 1
- VUJGKADZTYCLIL-YHPRVSEPSA-L disodium;5-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-[(e)-2-[4-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-sulfonatophenyl]ethenyl]benzenesulfonate Chemical compound [Na+].[Na+].C=1C=C(\C=C\C=2C(=CC(NC=3N=C(N=C(NC=4C=CC=CC=4)N=3)N3CCOCC3)=CC=2)S([O-])(=O)=O)C(S(=O)(=O)[O-])=CC=1NC(N=C(N=1)N2CCOCC2)=NC=1NC1=CC=CC=C1 VUJGKADZTYCLIL-YHPRVSEPSA-L 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 108010093305 exopolygalacturonase Proteins 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 229930182830 galactose Natural products 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 108010002430 hemicellulase Proteins 0.000 description 1
- 229960002773 hyaluronidase Drugs 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 150000004966 inorganic peroxy acids Chemical class 0.000 description 1
- 108010059345 keratinase Proteins 0.000 description 1
- 239000001102 lavandula vera Substances 0.000 description 1
- 235000018219 lavender Nutrition 0.000 description 1
- 108010062085 ligninase Proteins 0.000 description 1
- 229930007744 linalool Natural products 0.000 description 1
- UWKAYLJWKGQEPM-UHFFFAOYSA-N linalool acetate Natural products CC(C)=CCCC(C)(C=C)OC(C)=O UWKAYLJWKGQEPM-UHFFFAOYSA-N 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- WKGHJBXTMFXUNA-UHFFFAOYSA-N n,n,n',n'-tetrahexadecylethane-1,2-diamine Chemical compound CCCCCCCCCCCCCCCCN(CCCCCCCCCCCCCCCC)CCN(CCCCCCCCCCCCCCCC)CCCCCCCCCCCCCCCC WKGHJBXTMFXUNA-UHFFFAOYSA-N 0.000 description 1
- DMMDCPMHDXAIRV-UHFFFAOYSA-N n-[5-[bis(2-methoxyethyl)amino]-2-[(2-cyano-4-nitrophenyl)diazenyl]phenyl]acetamide Chemical compound CC(=O)NC1=CC(N(CCOC)CCOC)=CC=C1N=NC1=CC=C([N+]([O-])=O)C=C1C#N DMMDCPMHDXAIRV-UHFFFAOYSA-N 0.000 description 1
- ZOCHHNOQQHDWHG-UHFFFAOYSA-N n-hexan-3-ol Natural products CCCC(O)CC ZOCHHNOQQHDWHG-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical class C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000004967 organic peroxy acids Chemical class 0.000 description 1
- 108010087558 pectate lyase Proteins 0.000 description 1
- 229960003330 pentetic acid Drugs 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- XCRBXWCUXJNEFX-UHFFFAOYSA-N peroxybenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1 XCRBXWCUXJNEFX-UHFFFAOYSA-N 0.000 description 1
- 125000005342 perphosphate group Chemical group 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 229920000196 poly(lauryl methacrylate) Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229920005996 polystyrene-poly(ethylene-butylene)-polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 150000003138 primary alcohols Chemical class 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229930007790 rose oxide Natural products 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229940071207 sesquicarbonate Drugs 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000992 solvent dye Substances 0.000 description 1
- LJFWQNJLLOFIJK-UHFFFAOYSA-N solvent violet 13 Chemical compound C1=CC(C)=CC=C1NC1=CC=C(O)C2=C1C(=O)C1=CC=CC=C1C2=O LJFWQNJLLOFIJK-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 108010038851 tannase Proteins 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000001226 triphosphate Substances 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 239000002888 zwitterionic surfactant Substances 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
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/001—Softening compositions
-
- 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
- C11D11/0082—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
- C11D11/0088—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads the liquefied ingredients being sprayed or adsorbed onto solid particles
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
-
- 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
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
-
- 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
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
- C11D3/3742—Nitrogen containing silicones
Definitions
- the present invention relates to solid softening granules for incorporation into a wash added laundry treatment composition, to a process for the preparation of the fabric softening granules, to a domestic method of treating a textile, and to the use of the fabric softening granules.
- WO 04/111169 discloses hydrolytically stable polysaccharides which are covalently linked to a first polymeric textile softening species and optionally emulsified with a second polymeric textile softening species.
- a problem that exists in the softening in the wash field is the formulation of such softening in the wash products.
- Many useful softener ingredients are liquids or emulsions.
- Various methods are utilised to incorporate these liquids or emulsions into powder formulations.
- a solid redispersible emulsion comprising an oil-in-water emulsion consisting of a laundry care constituent, which is encapsulated in an enclosure stabilised by polyvalent metal ions.
- the enclosure material is preferably a polysaccharide such as alginate.
- a granulation route is proposed in WO 2007/009621 to provide softening particles.
- Disclosed is a process in which a silicone oil emulsion is granulated with a kappa carrageenan or alginate polymer matrix.
- alginate encapsulates and granules are unstable when stored at high temperature and humidity due to leakage of silicone oil.
- a further problem is that when incorporated in laundry products they leave visible residues on the laundered clothes.
- the present invention provides a solid softening granule comprising:
- a second aspect of the invention provides a laundry treatment composition comprising from 0.1 to 25 wt.% of the solid softening granule of the first aspect, from 2 to 70 wt.% of a surfactant, and from 1 to 70 wt.% of a builder.
- a third aspect of the invention provides the use of an effective amount of the laundry treatment composition of the second aspect to soften fabric in the wash.
- a fourth aspect of the invention provides a domestic method treating a textile, comprising the steps of:
- a fifth aspect of the invention provides a process for making the solid softening granules of the first aspect, wherein the process includes the steps of:-
- the amount of components present in the laundry treatment composition quoted herein are wt.% of total composition unless otherwise stated.
- the solid softening granules are in the form of granules.
- the granules preferably have a size range of from 0.1 to 5mm, more preferably from 0.2 to 3mm, most preferably from 0.25 to 1.5mm.
- the granule size can be measured for example using graded sieves.
- the solid softening granule comprises from 1 to 30 wt.%, preferably from 2.5 to 27.5 wt.%, more preferably from 5 to 25 wt.% of a softening system.
- the softening system comprises a locust bean gum polysaccharide and softening silicone.
- the weight ratio of the polysaccharide to the softening silicone in the softening system is in the range of 1:200 to 1:5, preferably 1:50 to 1:5, more preferably 1:20 to 1:5 parts by weight.
- the polysaccharide is present in the granule at a level of from 0.005 to 5 wt.%, preferably from 0.05 to 3 wt.%.
- a polysaccharide comprises a plurality of saccharide rings which have pendant hydroxyl groups.
- the polysaccharide is locust bean gum. This is a polysaccharide having an affinity for cellulose.
- the polysaccharide may be straight or branched. Many naturally occurring polysaccharides have at least some degree of branching, or at any rate at least some saccharide rings are in the form of pendant side groups on a main polysaccharide backbone.
- the polysaccharide may optionally have hydrolytically releasable esterified pendant groups attached, for example acetate groups.
- the polysaccharide is a non-hydrolysable polysaccharide (NHP), which is free of hydrolytically releasable esterified pendant groups.
- Locust bean gum is an example of a polysaccharide having a ⁇ -1,4 linked polysaccharide backbone with various levels of branchpoints to saccharide or polysaccharide side chains.
- Locust bean gum is a galacto-mannan polysaccharide and has a ⁇ -1,4 linked backbone with galactose branches.
- the locust bean gum polysaccharide is a non-charged polysaccahride.
- polysaccharide at least some of these hydroxyl groups are independently substituted by, or replaced with, one or more silicone groups.
- the "average degree of substitution" for a given class of substituent means the average number of substituents of that class per saccharide ring for the totality of polysaccharide molecules in the sample and is determined for all saccharide rings.
- the average degree of substitution for the silicone groups on the polysaccharide backbone is from 0.00001 to 0.5, preferably from 0.001 to 0.5, more preferably from 0.001 to 0.1.
- a further preferred range is from 0.01 to 0.05.
- the polysaccharide has one or more silicone groups attached to it in a covalent fashion. If one or more silicone groups are attached to the polysaccharide, they are independent of and separate to the softening silicone of the emulsion.
- the silicone material attached to the polysaccharide may be the same material as the softening silicone, but there is no requirement for that to be the case.
- the bond between the silicone and the polysaccharide is such that the decay rate constant (k d ) of the material in an aqueous solution at 0.01 wt% of the material together with 0.1 wt% of anionic surfactant at 40°C and at a pH of 10.5 is such that k d ⁇ 10 -3 s -1 .
- the silicone material attached to the polysaccharide is preferably a polymeric long chain silicone material, preferably selected from polydialkyl siloxanes, amine derivatives thereof, and mixtures thereof.
- one or more hydroxyl groups on the polysaccharide are reacted with a reactive group attached to the silicone chain, or the hydroxyl group(s) of the polysaccharide in question is/are converted to another group capable of reaction with a reactive group attached to the silicone chain as described in WO 04/111169 .
- Preferred linking groups for attachment of the silicone group to the polysaccharide are by amide linkages, ester linkages, ether linkages, urethane linkages, triazine linkages, carbonate linkages, amine linkages or ester-alkylene linkages.
- a further method for silicone functionalisation of polysaccharides is disclosed in WO 2006/117386 .
- This document discloses the chemical modification of polysaccharides using a mechanical device which involves treatment of the polysaccharide with a rolling mill which has at least two adjacent rollers running in opposite directions and rotating at different speeds.
- One chemical modification agent used can be an epoxy-functionalised polysiloxane, and the polysaccharide is mixed with the chemical modification agent before and/or during the mechanical processing.
- the polysaccharide which has one or more silicone groups covalently attached can be conveniently referred to herein as a polysaccharide-silicone conjugate.
- the most preferred polysaccharide-silicone conjugate material is locust bean gum substituted with one or more polydimethylsiloxane chains, referred to herein as 'LBG-silicone'.
- the weight ratio of the polysaccharide or polysaccharide-silicone conjugate to the softening silicone in the softening system is in the range of 1:200 to 1:5, preferably 1:50 to 1:5, more preferably 1:20 to 1:5 parts by weight.
- the softening silicone is present in the granule at a level of from 0.995 to 29.995 wt.%, preferably from 0.91 to 27.3 wt.%.
- the most preferred level of the softening silicone in the granule is from 10 to 25 wt.% of total weight of the granule.
- the softening silicone is selected from polydialkyl siloxanes, amine derivatives thereof, and mixtures thereof.
- the softening silicone is an amino-silicone, and is independently selected from any silicone covalently bonded to the polysaccharide. More preferably the softening silicone is a hindered amine silicone.
- the preferred dynamic viscosity of the softening silicone is > 2,500 mPas (at a shear rate of around 100 reciprocal seconds and a temperature of 20°C).
- the solid softening granules comprise polysaccharide and softening silicone. These components can be preferably combined together into an emulsion for ease of processing into the solid softening granules.
- the emulsion comprises a softening silicone and a polysaccharide (preferably a polysaccharide-silicone conjugate) both as described above.
- the emulsions further comprise another liquid component, preferably a polar solvent, such as water.
- the emulsion has typically 30 to 99.9%, preferably 40 to 99% of the other liquid component (e.g. water).
- the emulsion may for example be a high water emulsion, or a low water emulsion.
- Low water emulsions may be for example 30 to 60% water, preferably 40 to 55% water.
- High water emulsions may be for example 60 to 99.9% water, preferably 80 to 99% water.
- Moderate water emulsions may be for example 55 to 80% water.
- the emulsion can be concentrated to provide a low water emulsion.
- the emulsion may also contain an emulsifying agent, preferably an emulsifying surfactant for the softening silicone and polysaccharide or polysaccharide-silicone conjugate.
- an emulsifying agent preferably an emulsifying surfactant for the softening silicone and polysaccharide or polysaccharide-silicone conjugate.
- the polysaccharide-silicone conjugate is itself an emulsifying agent.
- the emulsifying agent is preferably one or more surfactants, for example, selected from any class, sub class or specific surfactant(s) disclosed herein in any context.
- the emulsifying agent most preferably comprises or consists of a non-ionic surfactant. Additionally or alternatively, one or more selected additional surfactants from anionic, cationic, zwitterionic and amphoteric surfactants may be incorporated in or used as the emulsifying agent.
- the emulsion is prepared by mixing the softening silicone, polysaccharide (preferably a polysaccharide-silicone conjugate), polar solvent (e.g. water), and preferably also an emulsifying agent, such as a surfactant, especially a non-ionic surfactant, in a high shear mixer.
- polysaccharide preferably a polysaccharide-silicone conjugate
- polar solvent e.g. water
- an emulsifying agent such as a surfactant, especially a non-ionic surfactant
- the inorganic carrier is selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof.
- carbonate and bicarbonate are used to refer to an alkali or alkaline earth metal salt such as for example sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate or another salt obtained by full or partial neutralization of carbonic acid.
- the weight percent of a salt of carbonate or bicarbonate can be expressed either as the weight percent of just the anionic carbonate or bicarbonate, or of the entire salt including the cation.
- the inorganic carrier may be soluble or insoluble.
- the inorganic carrier is soluble.
- examples of soluble inorganic carriers are carbonates and bicarbonates, in particular, sodium carbonate and sodium bicarbonate.
- 'soluble' used in relation to the soluble inorganic carrier is meant that the inorganic carrier dissolves in water. Such that when 1g of inorganic carrier is placed into an aqueous solution of 1L at room temperature and shaken at 100 RPM on a rotator shaker at 293K for 2 hours, then the weight of the inorganic carrier removed (by filtering through a sieve or filter paper of appropriate size and drying) is less than 95% by weight of that added.
- 'insoluble' used in relation to the solid inorganic carrier means those carriers that do not pass the aforementioned solubility test.
- the inorganic carrier is present in the solid softening granule at a level of from 70 to 99 wt.%, preferably 72.5 to 97.5 wt.%, most preferably from 75 to 95 wt.%.
- the carbonate carrier is a carbonate salt of a suitable alkali or alkaline earth metal cation.
- the carbonate is habit modified carbonate (HMC).
- HMC habit modified carbonate
- the carbonate material is habit modified sodium carbonate.
- a process for preparing a modified sodium carbonate carrier material comprising the steps of: (i) preparing an aqueous solution of sodium carbonate; an effective amount of a crystal growth modifier selected from the group comprising polyacrylates, polyaspartates and polyaspartic acids; whereby crystal growth-modified sodium carbonate is formed; (ii) drying the solution by any conventional drying method to form a dry solid carrier material.
- Preferred bicarbonate salts are sodium and potassium bicarbonate.
- the preferred soluble inorganic carrier is sodium carbonate.
- the most preferred inorganic carrier is habit modified sodium carbonate.
- a suitable process for making the solid softening granules of the invention includes the steps of:-
- the emulsion of step a) is concentrated by water evaporation to provide an emulsion comprising from 30 to 60% water.
- Suitable apparatus for this concentration step is a BuchiTM rotary evaporator.
- the drying step c) is preferably carried out at a level of from 20 to 100°C.
- the granules may by air dried at the lower end of this temperature range, an oven can be used to dry the granules at high temperatures.
- the granules can thus be isolated, and optionally passed through sieves to achieve the required sized granules.
- mixing is applied using any suitable apparatus such as an ultrasound sonicator, microfluidizer or homogenizer.
- a suitable homogeniser is a Manton Gaulin homogeniser or any other make of high shear homogenizer such as an Ultra Turrax.
- a suitable laboratory-scale high shear mixer is the Braun MR4050HC.
- the solid softening granule is suitably delivered to the fabric via incorporation into laundry treatment composition.
- Suitable laundry treatment compositions comprise from 0.1 to 25 wt.% of the solid softening granule and from 2 to 70 wt.% of a surfactant.
- the softening granules are present in the laundry treatment composition at a level of from 0.1 to 25 wt.%, preferably from 0.5 to 10 wt.%
- the laundry treatment composition may take the form a granular, spray-dried or dry-blended powder, a tablet, a molded solid or any other similar laundry detergent form known to those skilled in the art.
- Preferred laundry treatment composition forms which are particularly suitable in combination with the solid softening granules of the invention are granular, spray-dried or dry-blended powder compositions.
- the laundry treatment composition comprises between 2 to 70 wt.% of a surfactant, most preferably 10 to 30 wt.%.
- a surfactant most preferably 10 to 30 wt.%.
- the nonionic and anionic surfactants of the surfactant system may be chosen from the surfactants described " Surface Active Agents" Vol. 1, by Schwartz & Perry, Interscience 1949 , Vol. 2 by Schwartz, Perry & Berch, Interscience 1958 , in the current edition of "McCutcheon's Emulsifiers and Detergents” published by Manufacturing Confectioners Company or in " Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981 .
- the surfactants used are saturated.
- Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
- Specific nonionic detergent compounds are C 6 to C 22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic C 8 to C 18 primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
- Suitable anionic detergent compounds which may be used are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
- suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher C 8 to C 18 alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl C 9 to C 20 benzene sulphonates, particularly sodium linear secondary alkyl C 10 to C 15 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
- the preferred anionic detergent compounds are sodium C 11 to C 15 alkyl benzene sulphonates and sodium C 12 to C 18 alkyl sulphates.
- surfactants such as those described in EP-A-328 177 (Unilever), which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074 , and alkyl monoglycosides.
- Preferred surfactant systems are mixtures of anionic with nonionic detergent active materials, in particular the groups and examples of anionic and nonionic surfactants pointed out in EP-A-346 995 (Unilever).
- surfactant system that is a mixture of an alkali metal salt of a C 16 to C 18 primary alcohol sulphate together with a C 12 to C 15 primary alcohol 3 to 7 EO ethoxylate.
- the nonionic detergent is preferably present in amounts greater than 10%, e.g. 25 to 90 wt.% of the surfactant system.
- Anionic surfactants can be present for example in amounts in the range from about 5 wt.% to about 40 wt.% of the surfactant system.
- the laundry treatment composition may comprise from 1 to 70 wt.% of a builder.
- the level of builder is preferably from 1 to 40 wt.%.
- Builder materials may be selected from 1) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
- the size is in the range 0.1 to 10 microns (as measured by The Mastersizer 2000 particle size analyzer using laser diffraction ex MalvernTM).
- calcium sequestrant builder materials examples include alkali metal polyphosphates, such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetraacetic acid.
- precipitating builder materials examples include sodium orthophosphate and sodium carbonate.
- Examples of calcium ion-exchange builder materials include the various types of water-insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-0,384,070 .
- zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-0,384,070 .
- the composition may also contain 0-50 wt.% of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below.
- a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below.
- Many builders are also bleach-stabilising agents by virtue of their ability to complex metal ions.
- Zeolite and carbonate are preferred builders.
- the composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt.%.
- Aluminosilicates are materials having the general formula: 0.8-1.5 M 2 O. Al 2 O 3 . 0.8-6 SiO 2 where M is a monovalent cation, preferably sodium. These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
- the preferred sodium aluminosilicates contain 1.5-3.5 SiO 2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
- the ratio of surfactants to aluminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1.
- phosphate builders may be used.
- 'phosphate' embraces diphosphate, triphosphate, and phosphonate species.
- Other forms of builder include silicates, such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst).
- the laundry detergent formulation is a non-phosphate built laundry detergent formulation, i.e., contains less than 1 wt.% of phosphate.
- the laundry treatment composition preferably comprises a blue or violet shading agent in the range from 0.0001 to 0.01 wt.%.
- the shading agents reduce the perception of damage to many coloured garments and increase whiteness of white garments.
- the shading agents are preferably selected from blue and violet dyes of the solvent disperse basic, direct and acid type listed in the colour index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists 2002 ).
- a direct violet or direct blue dyes is present.
- the dyes are bis -azo, tris -azo dyes or triphendioxazine dye.
- the carcinogenic benzidene based dyes are not preferred.
- Bis-azo copper containing dyes such as direct violet 66 may be used.
- the most preferred bis-azo dyes have the following structure: wherein:
- Preferred bis-azo dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, and direct violet 99.
- Preferred solvent and disperse dyes are selected from, mono-azo or anthraquinone dyes, most preferably, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
- a preferred pigment is pigment violet 23.
- the laundry treatment composition preferably comprises one or more enzymes which provide cleaning performance and/or fabric care benefits.
- suitable enzymes include, but are not limited to, hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases,- lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof.
- a typical combination is an enzyme cocktail that may comprise, for example, a protease and lipase in conjunction with amylase.
- the aforementioned additional enzymes may be present at levels from about 0.00001 wt.% to about 2 wt.%, from about 0.0001 wt.% to about 1 wt.% or even from about 0.001 wt.% to about 0.5 wt.% enzyme protein by weight of the composition.
- Preferred enzymes are cellulases.
- the laundry treatment composition preferably comprises a fluorescent agent (optical brightener).
- fluorescent agents are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
- the total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt.%, more preferably 0.01 to 0.1 wt.%.
- Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Diamine stilbene di-sulphonic acid compounds, e.g.
- Preferred fluorescers are: sodium 2-(4-styryl-3-sulfophenyl)-2H-napthol[1,2-d]trazole, disodium 4,4'-bis ⁇ [(4-anilino-6-(N methyl-N-2 hydroxyethyl) amino 1,3,5-triazin-2-yl)]amino ⁇ stilbene-2-2' disulfonate, disodium 4,4'-bis ⁇ [(4-anilino-6-morpholino-1,3,5-triazin-2-yl)]amino ⁇ stilbene-2-2' disulfonate, and disodium 4,4'-bis(2-sulfoslyryl)biphenyl.
- the laundry treatment composition comprises a perfume.
- the perfume is preferably in the range from 0.001 to 3 wt.%, most preferably 0.1 to 1 wt.%.
- CTFA Cosmetic, Toiletry and Fragrance Association
- Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
- compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
- top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955 ]).
- Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.
- Perfume and top note may be used to cue the whiteness benefit of the invention.
- the laundry treatment composition may comprise one or more polymers.
- Examples are carboxymethylcellulose, poly(ethylene glycol), poly(vinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.
- the laundry treatment compositions may also suitably contain a bleach system. If bleach is present, then it is preferred that the compositions of the invention contain peroxy bleach compounds capable of yielding hydrogen peroxide in aqueous solution, for example inorganic or organic peroxyacids, and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates.
- bleach compounds capable of yielding hydrogen peroxide in aqueous solution, for example inorganic or organic peroxyacids, and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates.
- Bleach ingredients are generally post-dosed as powders.
- the peroxy bleach compound for example sodium percarbonate
- the peroxy bleach compound is suitably present in an amount of from 5 to 35 wt.%, preferably from 10 to 25 wt.%.
- the peroxy bleach compound for example sodium percarbonate
- the bleach precursor is suitably present in an amount of from 1 to 8 wt.%, preferably from 2 to 5 wt.%.
- Preferred bleach precursors are peroxycarboxylic acid precursors, more especially peracetic acid precursors and peroxybenzoic acid precursors; and peroxycarbonic acid precursors.
- An especially preferred bleach precursor suitable for use in the present invention is N, N, N', N'-tetracetyl ethylenediamine (TAED).
- a bleach stabiliser may also be present.
- Suitable bleach stabilisers include ethylenediamine tetraacetate (EDTA), ethylenediamine disuccinate (EDDS), and the aminopolyphosphonates such as ethylenediamine tetramethylene phosphonate (EDTMP) and diethylenetriamine pentamethylene phosphonate (DETPMP).
- LBG-silicone conjugates can be prepared by the methods described in WO 04/111169 .
- An example preparation is as follows.
- Lithium chloride (27g) was dissolved in anhydrous dimethyl sulfoxide (300cm 3 ) with heating (150°C) and stirring under nitrogen. Once the lithium chloride was dissolved the solution was cooled to 120°C before slowly adding locust bean gum (3.5g) over a period of 20 minutes with vigorous stirring.
- softening system in this case an emulsion
- softening silicone can be prepared by the methods described in WO 04/111169 .
- An example preparation is as follows.
- the LBG-silicone conjugate and optional emulsifier (Synperonic A7 was used) were weighed into a bottle along with the required amount of water. This mixture was agitated using an ultrasonic probe (SoniprobeTM) at half power until no undissolved polysaccharide is visible (2-3 minutes). The softening silicone (Q2-8220) was then added to the bottle. The mixture was sheared using a SilversonTM L4R high shear mixer fitted with a 25mm diameter shearing head and a square-hole, high shear screen at setting 5 for four minutes.
- Synperonic A7TM is a dodecane hexaethoxylate nonionic surfactant Q2-8220TM is an aminosilicone oil from Dow Corning. Its viscosity was measured as 160 mPas with a "Bohlin CV 120 High Resolution" viscometer at 22°C and a shear rate of 100s -1 using the cone and plate method.
- Example granulation processes using emulsion softening systems Example granulation processes using emulsion softening systems.
- Emulsion softening systems were prepared by the methods outlined in WO 04/111169 .
- a commercially available active softening silicone emulsion was modified by addition of the LBG-silicone conjugate. This is the emulsion softening system used for the following granulation processes.
- the 20% active content levels of the emulsions used as well as the % active content of the resulting granules indicate total silicone actives, in this case the combination of the LBG-silicone conjugate and softening silicone.
- the weight ratio of the LBG-silicone conjugate to the softening silicone for each of the emulsions was 1:9.
- the 20% active content level of the emulsion was made up of 2% LBG-silicone conjugate + 18% softening silicone.
- 100g of the emulsion softening system was concentrated by removal of water in a BuchiTM rotary evaporator to a final weight of 56.2g (the concentrate now has an active content of 35.6%).
- 100g of the emulsion softening system was concentrated by removal of water in a BuchiTM rotary evaporator to a final weight of 56.2g (the concentrate now has an active content of 35.6%).
- 100g of the emulsion softening system was concentrated by removal of water in a BuchiTM rotary evaporator to a final weight of 56.2g (the concentrate now has an active content of 35.6%).
- Comparative alginate granules were produced in accordance with WO 2006/117385 .
- Silicone dosage was based on theoretical silicone levels in the granules. These were calculated to give equivalent silicone dosage on the fabric monitors of 2mg silicone per g of fabric (100% pick-up of silicone is assumed), for each granule type. This level of silicone equates to 4.3% silicone in the Persil powder.
- a RotaWashTM was used to simulate conditions in typical full-scale European Front Loading Automatic (FLA) washing machines.
- the RotaWashTM is a small scale washer with 12 individual wash 'pots', each with a capacity of 250mls. In these experiments, each wash pot contains a single piece of fabric.
- the following chart shows softness delivery measured by Shear Hysteresis (Instrumental Shear measurement) from the PersilTM Bio powder (2006 UK commercially available laundry detergent product) with addition of various LBG-Silicone granules made according to example 1 and in comparison to the alginate softening granules.
- Table 2 Composition Shear Hysteresis 2HG5 Control (PersilTM Bio Powder) 6.20 Alginate granules, 80% silicone 3.61 Granules D LBG-silicone/Carbonate granule, 17.4% silicone 4.10 Granules C LBG-silicone/Carbonate granule, 19.8% silicone 4.22
- Example 3 Improved physical properties on storage
- Carbonate granules show improved physical properties (reduction of oil leakage and stickiness) on storage at 28°C/70% RH (8 weeks), compared with alginate granules. After this period the carbonate granules were still free flowing, while the alginate granules were a sticky mass stuck together by leaked silicone, and were unacceptable for use in formulations.
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Description
- The present invention relates to solid softening granules for incorporation into a wash added laundry treatment composition, to a process for the preparation of the fabric softening granules, to a domestic method of treating a textile, and to the use of the fabric softening granules.
- To impart a soft feel to laundered clothes is desirable to consumers. One way of achieving this is to use a separate rinse conditioner in addition to the detergent. However, it is more convenient to use a single product that provides both the cleaning and softness requirements, these are known as "softening in the wash" products.
-
WO 04/111169 - A problem that exists in the softening in the wash field is the formulation of such softening in the wash products. Many useful softener ingredients are liquids or emulsions. Various methods are utilised to incorporate these liquids or emulsions into powder formulations.
- An encapsulation route is proposed in
WO 2006/117385 . Disclosed is a solid redispersible emulsion, comprising an oil-in-water emulsion consisting of a laundry care constituent, which is encapsulated in an enclosure stabilised by polyvalent metal ions. The enclosure material is preferably a polysaccharide such as alginate. - A granulation route is proposed in
WO 2007/009621 to provide softening particles. Disclosed is a process in which a silicone oil emulsion is granulated with a kappa carrageenan or alginate polymer matrix. - However, a problem with such alginate encapsulates and granules are that they are unstable when stored at high temperature and humidity due to leakage of silicone oil. A further problem is that when incorporated in laundry products they leave visible residues on the laundered clothes.
- We have found that granulation using a soluble inorganic carrier provides softening granules that overcome one or more of the aforementioned problems and further provide acceptable fabric softening.
- In one aspect the present invention provides a solid softening granule comprising:
- (i) from 1 to 30 wt.% of a softening system which comprises a locust bean gum polysaccharide and a softening silicone in a weight ratio of from 1:200 to 1:5; and,
- (ii) from 70 to 99 wt.% of an inorganic carrier selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof.
- A second aspect of the invention provides a laundry treatment composition comprising from 0.1 to 25 wt.% of the solid softening granule of the first aspect, from 2 to 70 wt.% of a surfactant, and from 1 to 70 wt.% of a builder.
- A third aspect of the invention provides the use of an effective amount of the laundry treatment composition of the second aspect to soften fabric in the wash.
- A fourth aspect of the invention provides a domestic method treating a textile, comprising the steps of:
- (i) treating a textile with an aqueous solution of from 1 to 20 g/l of the laundry treatment composition of the second aspect; and,
- (ii) rinsing and drying the textile.
- A fifth aspect of the invention provides a process for making the solid softening granules of the first aspect, wherein the process includes the steps of:-
- a) provision of an emulsion comprising water and a softening system which comprises a locust bean gum polysaccharide and a softening silicone in a weight ratio of from 1:200 to 1:5;
- b) granulation of the emulsion with an inorganic carrier selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof in a high shear mixer; and,
- c) drying the resulting granules.
- The amount of components present in the laundry treatment composition quoted herein are wt.% of total composition unless otherwise stated.
- The solid softening granules are in the form of granules. The granules preferably have a size range of from 0.1 to 5mm, more preferably from 0.2 to 3mm, most preferably from 0.25 to 1.5mm. The granule size can be measured for example using graded sieves.
- The solid softening granule comprises from 1 to 30 wt.%, preferably from 2.5 to 27.5 wt.%, more preferably from 5 to 25 wt.% of a softening system. The softening system comprises a locust bean gum polysaccharide and softening silicone.
- The weight ratio of the polysaccharide to the softening silicone in the softening system is in the range of 1:200 to 1:5, preferably 1:50 to 1:5, more preferably 1:20 to 1:5 parts by weight.
- The polysaccharide is present in the granule at a level of from 0.005 to 5 wt.%, preferably from 0.05 to 3 wt.%.
- A polysaccharide comprises a plurality of saccharide rings which have pendant hydroxyl groups. The polysaccharide is locust bean gum. This is a polysaccharide having an affinity for cellulose.
- The polysaccharide may be straight or branched. Many naturally occurring polysaccharides have at least some degree of branching, or at any rate at least some saccharide rings are in the form of pendant side groups on a main polysaccharide backbone.
- The polysaccharide may optionally have hydrolytically releasable esterified pendant groups attached, for example acetate groups. However preferably the polysaccharide is a non-hydrolysable polysaccharide (NHP), which is free of hydrolytically releasable esterified pendant groups.
- Locust bean gum is an example of a polysaccharide having a β-1,4 linked polysaccharide backbone with various levels of branchpoints to saccharide or polysaccharide side chains. Locust bean gum is a galacto-mannan polysaccharide and has a β-1,4 linked backbone with galactose branches.
- The locust bean gum polysaccharide is a non-charged polysaccahride.
- In a preferred locust bean gum polysaccharide at least some of these hydroxyl groups are independently substituted by, or replaced with, one or more silicone groups. The "average degree of substitution" for a given class of substituent means the average number of substituents of that class per saccharide ring for the totality of polysaccharide molecules in the sample and is determined for all saccharide rings.
- Preferably, the average degree of substitution for the silicone groups on the polysaccharide backbone is from 0.00001 to 0.5, preferably from 0.001 to 0.5, more preferably from 0.001 to 0.1. A further preferred range is from 0.01 to 0.05.
- Preferably the polysaccharide has one or more silicone groups attached to it in a covalent fashion. If one or more silicone groups are attached to the polysaccharide, they are independent of and separate to the softening silicone of the emulsion. The silicone material attached to the polysaccharide may be the same material as the softening silicone, but there is no requirement for that to be the case.
- Preferably, the bond between the silicone and the polysaccharide is such that the decay rate constant (kd) of the material in an aqueous solution at 0.01 wt% of the material together with 0.1 wt% of anionic surfactant at 40°C and at a pH of 10.5 is such that kd<10-3s-1.
- The silicone material attached to the polysaccharide is preferably a polymeric long chain silicone material, preferably selected from polydialkyl siloxanes, amine derivatives thereof, and mixtures thereof.
- In the covalent attachment of the silicone group(s) to the polysaccharide material, one or more hydroxyl groups on the polysaccharide are reacted with a reactive group attached to the silicone chain, or the hydroxyl group(s) of the polysaccharide in question is/are converted to another group capable of reaction with a reactive group attached to the silicone chain as described in
WO 04/111169 - Preferred linking groups for attachment of the silicone group to the polysaccharide are by amide linkages, ester linkages, ether linkages, urethane linkages, triazine linkages, carbonate linkages, amine linkages or ester-alkylene linkages.
- A further method for silicone functionalisation of polysaccharides is disclosed in
WO 2006/117386 . This document discloses the chemical modification of polysaccharides using a mechanical device which involves treatment of the polysaccharide with a rolling mill which has at least two adjacent rollers running in opposite directions and rotating at different speeds. One chemical modification agent used can be an epoxy-functionalised polysiloxane, and the polysaccharide is mixed with the chemical modification agent before and/or during the mechanical processing. - The polysaccharide which has one or more silicone groups covalently attached can be conveniently referred to herein as a polysaccharide-silicone conjugate.
- The most preferred polysaccharide-silicone conjugate material is locust bean gum substituted with one or more polydimethylsiloxane chains, referred to herein as 'LBG-silicone'.
- The weight ratio of the polysaccharide or polysaccharide-silicone conjugate to the softening silicone in the softening system is in the range of 1:200 to 1:5, preferably 1:50 to 1:5, more preferably 1:20 to 1:5 parts by weight.
- The softening silicone is present in the granule at a level of from 0.995 to 29.995 wt.%, preferably from 0.91 to 27.3 wt.%. The most preferred level of the softening silicone in the granule is from 10 to 25 wt.% of total weight of the granule.
- The softening silicone is selected from polydialkyl siloxanes, amine derivatives thereof, and mixtures thereof. Preferably the softening silicone is an amino-silicone, and is independently selected from any silicone covalently bonded to the polysaccharide. More preferably the softening silicone is a hindered amine silicone. The preferred dynamic viscosity of the softening silicone is > 2,500 mPas (at a shear rate of around 100 reciprocal seconds and a temperature of 20°C).
- The solid softening granules comprise polysaccharide and softening silicone. These components can be preferably combined together into an emulsion for ease of processing into the solid softening granules.
- When an emulsion is used, the emulsion comprises a softening silicone and a polysaccharide (preferably a polysaccharide-silicone conjugate) both as described above.
- The emulsions further comprise another liquid component, preferably a polar solvent, such as water. The emulsion has typically 30 to 99.9%, preferably 40 to 99% of the other liquid component (e.g. water). The emulsion may for example be a high water emulsion, or a low water emulsion. Low water emulsions may be for example 30 to 60% water, preferably 40 to 55% water. High water emulsions may be for example 60 to 99.9% water, preferably 80 to 99% water. Moderate water emulsions may be for example 55 to 80% water. The emulsion can be concentrated to provide a low water emulsion.
- The emulsion may also contain an emulsifying agent, preferably an emulsifying surfactant for the softening silicone and polysaccharide or polysaccharide-silicone conjugate. In preferred cases, the polysaccharide-silicone conjugate is itself an emulsifying agent.
- The emulsifying agent, if present, is preferably one or more surfactants, for example, selected from any class, sub class or specific surfactant(s) disclosed herein in any context.
- The emulsifying agent most preferably comprises or consists of a non-ionic surfactant. Additionally or alternatively, one or more selected additional surfactants from anionic, cationic, zwitterionic and amphoteric surfactants may be incorporated in or used as the emulsifying agent.
- The emulsion is prepared by mixing the softening silicone, polysaccharide (preferably a polysaccharide-silicone conjugate), polar solvent (e.g. water), and preferably also an emulsifying agent, such as a surfactant, especially a non-ionic surfactant, in a high shear mixer.
- The inorganic carrier is selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof.
- As used herein, carbonate and bicarbonate are used to refer to an alkali or alkaline earth metal salt such as for example sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate or another salt obtained by full or partial neutralization of carbonic acid. The weight percent of a salt of carbonate or bicarbonate can be expressed either as the weight percent of just the anionic carbonate or bicarbonate, or of the entire salt including the cation.
- The inorganic carrier may be soluble or insoluble. Preferably the inorganic carrier is soluble. Examples of soluble inorganic carriers are carbonates and bicarbonates, in particular, sodium carbonate and sodium bicarbonate.
- By 'soluble' used in relation to the soluble inorganic carrier is meant that the inorganic carrier dissolves in water. Such that when 1g of inorganic carrier is placed into an aqueous solution of 1L at room temperature and shaken at 100 RPM on a rotator shaker at 293K for 2 hours, then the weight of the inorganic carrier removed (by filtering through a sieve or filter paper of appropriate size and drying) is less than 95% by weight of that added. By 'insoluble' used in relation to the solid inorganic carrier means those carriers that do not pass the aforementioned solubility test.
- The inorganic carrier is present in the solid softening granule at a level of from 70 to 99 wt.%, preferably 72.5 to 97.5 wt.%, most preferably from 75 to 95 wt.%.
- The carbonate carrier is a carbonate salt of a suitable alkali or alkaline earth metal cation. Preferably the carbonate is habit modified carbonate (HMC). More preferably the carbonate material is habit modified sodium carbonate. These materials have a high surface area and hence high carrying capacity. An advantage of such material is that high loading of the softening silicone can be achieved. Examples of how to modify sodium carbonate in this fashion can be found in
WO 2006/081930 . Disclosed therein is a process for preparing a modified sodium carbonate carrier material, the process comprising the steps of: (i) preparing an aqueous solution of sodium carbonate; an effective amount of a crystal growth modifier selected from the group comprising polyacrylates, polyaspartates and polyaspartic acids; whereby crystal growth-modified sodium carbonate is formed; (ii) drying the solution by any conventional drying method to form a dry solid carrier material. - Preferred bicarbonate salts are sodium and potassium bicarbonate.
- The preferred soluble inorganic carrier is sodium carbonate. The most preferred inorganic carrier is habit modified sodium carbonate.
- A suitable process for making the solid softening granules of the invention includes the steps of:-
- a) provision of an emulsion comprising water and a softening system which comprises a locust bean gum polysaccharide and a softening silicone in a weight ratio of from 1:200 to 1:5;
- b) granulation of the emulsion with an inorganic carrier selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof, in a high shear mixer; and,
- c) drying the resulting granules.
- Preferably the emulsion of step a) is concentrated by water evaporation to provide an emulsion comprising from 30 to 60% water. Suitable apparatus for this concentration step is a Buchi™ rotary evaporator.
- The drying step c) is preferably carried out at a level of from 20 to 100°C. The granules may by air dried at the lower end of this temperature range, an oven can be used to dry the granules at high temperatures.
- The granules can thus be isolated, and optionally passed through sieves to achieve the required sized granules. In a high shear mixer as used herein, mixing is applied using any suitable apparatus such as an ultrasound sonicator, microfluidizer or homogenizer. A suitable homogeniser is a Manton Gaulin homogeniser or any other make of high shear homogenizer such as an Ultra Turrax. A suitable laboratory-scale high shear mixer is the Braun MR4050HC.
- The solid softening granule is suitably delivered to the fabric via incorporation into laundry treatment composition.
- Suitable laundry treatment compositions comprise from 0.1 to 25 wt.% of the solid softening granule and from 2 to 70 wt.% of a surfactant.
- The softening granules are present in the laundry treatment composition at a level of from 0.1 to 25 wt.%, preferably from 0.5 to 10 wt.%
- The laundry treatment composition may take the form a granular, spray-dried or dry-blended powder, a tablet, a molded solid or any other similar laundry detergent form known to those skilled in the art.
- Preferred laundry treatment composition forms which are particularly suitable in combination with the solid softening granules of the invention are granular, spray-dried or dry-blended powder compositions.
- The laundry treatment composition comprises between 2 to 70 wt.% of a surfactant, most preferably 10 to 30 wt.%. In general, the nonionic and anionic surfactants of the surfactant system may be chosen from the surfactants described "Surface Active Agents" Vol. 1, by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing Confectioners Company or in "Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981. Preferably the surfactants used are saturated.
- Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic detergent compounds are C6 to C22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic C8 to C18 primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
- Suitable anionic detergent compounds which may be used are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals. Examples of suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher C8 to C18 alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl C9 to C20 benzene sulphonates, particularly sodium linear secondary alkyl C10 to C15 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum. The preferred anionic detergent compounds are sodium C11 to C15 alkyl benzene sulphonates and sodium C12 to C18 alkyl sulphates. Also applicable are surfactants such as those described in
EP-A-328 177 EP-A-070 074 - Preferred surfactant systems are mixtures of anionic with nonionic detergent active materials, in particular the groups and examples of anionic and nonionic surfactants pointed out in
EP-A-346 995 - The nonionic detergent is preferably present in amounts greater than 10%, e.g. 25 to 90 wt.% of the surfactant system. Anionic surfactants can be present for example in amounts in the range from about 5 wt.% to about 40 wt.% of the surfactant system.
- The laundry treatment composition may comprise from 1 to 70 wt.% of a builder.
- For laundry compositions in the form of granular, spray-dried or dry-blended powders, the level of builder is preferably from 1 to 40 wt.%.
- Builder materials may be selected from 1) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
- It is preferred that when an insoluble inorganic builder, e.g., zeolite is used, the size is in the range 0.1 to 10 microns (as measured by The Mastersizer 2000 particle size analyzer using laser diffraction ex Malvern™).
- Examples of calcium sequestrant builder materials include alkali metal polyphosphates, such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetraacetic acid.
- Examples of precipitating builder materials include sodium orthophosphate and sodium carbonate.
- Examples of calcium ion-exchange builder materials include the various types of water-insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in
EP-A-0,384,070 . - The composition may also contain 0-50 wt.% of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below. Many builders are also bleach-stabilising agents by virtue of their ability to complex metal ions.
- Zeolite and carbonate (including bicarbonate and sesquicarbonate) are preferred builders.
- The composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt.%. Aluminosilicates are materials having the general formula:
0.8-1.5 M2O. Al2O3. 0.8-6 SiO2
where M is a monovalent cation, preferably sodium. These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g. The preferred sodium aluminosilicates contain 1.5-3.5 SiO2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature. The ratio of surfactants to aluminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1. - Alternatively, or additionally to the aluminosilicate builders, phosphate builders may be used. In this art the term 'phosphate' embraces diphosphate, triphosphate, and phosphonate species. Other forms of builder include silicates, such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst).
- Preferably the laundry detergent formulation is a non-phosphate built laundry detergent formulation, i.e., contains less than 1 wt.% of phosphate.
- The laundry treatment composition preferably comprises a blue or violet shading agent in the range from 0.0001 to 0.01 wt.%. The shading agents reduce the perception of damage to many coloured garments and increase whiteness of white garments.
- The shading agents are preferably selected from blue and violet dyes of the solvent disperse basic, direct and acid type listed in the colour index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists 2002).
- Preferably a direct violet or direct blue dyes is present. Preferably the dyes are bis-azo, tris-azo dyes or triphendioxazine dye. The carcinogenic benzidene based dyes are not preferred.
- Bis-azo copper containing dyes such as direct violet 66 may be used.
-
- ring D and E may be independently naphthyl or phenyl as shown;
- R1 is selected from: hydrogen and C1-C4-alkyl, preferably hydrogen;
- R2 is selected from: hydrogen, C1-C4-alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl, preferably phenyl;
- R3 and R4 are independently selected from: hydrogen and C1-C4-alkyl, preferably hydrogen or methyl;
- X and Y are independently selected from: hydrogen, C1-C4-alkyl and C1-C4-alkoxy; preferably the dye has X= methyl; and, Y = methoxy and n is 0, 1 or 2, preferably 1 or 2.
- Preferred bis-azo dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, and direct violet 99.
- Preferred solvent and disperse dyes, are selected from, mono-azo or anthraquinone dyes, most preferably, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
- A preferred pigment is pigment violet 23.
- The laundry treatment composition preferably comprises one or more enzymes which provide cleaning performance and/or fabric care benefits. Examples of suitable enzymes include, but are not limited to, hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases,- lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof. A typical combination is an enzyme cocktail that may comprise, for example, a protease and lipase in conjunction with amylase. When present in a cleaning composition, the aforementioned additional enzymes may be present at levels from about 0.00001 wt.% to about 2 wt.%, from about 0.0001 wt.% to about 1 wt.% or even from about 0.001 wt.% to about 0.5 wt.% enzyme protein by weight of the composition.
- Preferred enzymes are cellulases.
- The laundry treatment composition preferably comprises a fluorescent agent (optical brightener). Fluorescent agents are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts. The total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt.%, more preferably 0.01 to 0.1 wt.%. Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Diamine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and Pyrazoline compounds, e.g. Blankophor SN. Preferred fluorescers are: sodium 2-(4-styryl-3-sulfophenyl)-2H-napthol[1,2-d]trazole, disodium 4,4'-bis{[(4-anilino-6-(N methyl-N-2 hydroxyethyl) amino 1,3,5-triazin-2-yl)]amino}stilbene-2-2' disulfonate, disodium 4,4'-bis{[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)]amino} stilbene-2-2' disulfonate, and disodium 4,4'-bis(2-sulfoslyryl)biphenyl.
- Preferably the laundry treatment composition comprises a perfume. The perfume is preferably in the range from 0.001 to 3 wt.%, most preferably 0.1 to 1 wt.%. Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
- It is commonplace for a plurality of perfume components to be present in a formulation. In the compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
- In perfume mixtures preferably 15 to 25 wt.% are top notes. Top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955]). Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.
- Perfume and top note may be used to cue the whiteness benefit of the invention.
- The laundry treatment composition may comprise one or more polymers. Examples are carboxymethylcellulose, poly(ethylene glycol), poly(vinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.
- The laundry treatment compositions may also suitably contain a bleach system. If bleach is present, then it is preferred that the compositions of the invention contain peroxy bleach compounds capable of yielding hydrogen peroxide in aqueous solution, for example inorganic or organic peroxyacids, and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates. Bleach ingredients are generally post-dosed as powders.
- If present, the peroxy bleach compound, for example sodium percarbonate, is suitably present in an amount of from 5 to 35 wt.%, preferably from 10 to 25 wt.%. The peroxy bleach compound, for example sodium percarbonate, may be used in conjunction with a bleach activator (bleach precursor) to improve bleaching action at low wash temperatures. The bleach precursor is suitably present in an amount of from 1 to 8 wt.%, preferably from 2 to 5 wt.%.
- Preferred bleach precursors are peroxycarboxylic acid precursors, more especially peracetic acid precursors and peroxybenzoic acid precursors; and peroxycarbonic acid precursors. An especially preferred bleach precursor suitable for use in the present invention is N, N, N', N'-tetracetyl ethylenediamine (TAED).
- A bleach stabiliser (heavy metal sequestrant) may also be present. Suitable bleach stabilisers include ethylenediamine tetraacetate (EDTA), ethylenediamine disuccinate (EDDS), and the aminopolyphosphonates such as ethylenediamine tetramethylene phosphonate (EDTMP) and diethylenetriamine pentamethylene phosphonate (DETPMP).
- LBG-silicone conjugates can be prepared by the methods described in
WO 04/111169 - Lithium chloride (27g) was dissolved in anhydrous dimethyl sulfoxide (300cm3) with heating (150°C) and stirring under nitrogen. Once the lithium chloride was dissolved the solution was cooled to 120°C before slowly adding locust bean gum (3.5g) over a period of 20 minutes with vigorous stirring.
- The viscous solution thus obtained was then further cooled to 70°C and carbonyl diimidazole (54mg, 0.5mmols) was added and stirring and heating was continued for a further two hours. Diaminopropyl terminated polydimethylsiloxane, 3,000 MWt, (1g, 0.33mmols) was then added and the solution stirred with heating for 18 hours.
- The solution was cooled to room temperature before adding drop-wise to vigorously stirring acetone (3 litres) to precipitate the polymer. The solution was centrifuged to isolate the product which was then washed with acetone (2 x 200cm3) before drying under vacuum (40°C) overnight to give an off-white solid (3.1g).
- From the 1H NMR of the hydrolysed product (heated to 1 hour at 70.C in 20% DCl/D2O) the degree of substitution of PDMS groups to sugar units was found to be 5.3 x 10-4.
- As softening system (in this case an emulsion) comprising a polysaccharide (i.e. LGB-silicone conjugate) and softening silicone can be prepared by the methods described in
WO 04/111169 - The LBG-silicone conjugate and optional emulsifier (Synperonic A7 was used) were weighed into a bottle along with the required amount of water. This mixture was agitated using an ultrasonic probe (Soniprobe™) at half power until no undissolved polysaccharide is visible (2-3 minutes). The softening silicone (Q2-8220) was then added to the bottle. The mixture was sheared using a Silverson™ L4R high shear mixer fitted with a 25mm diameter shearing head and a square-hole, high shear screen at setting 5 for four minutes.
- Synperonic A7™ is a dodecane hexaethoxylate nonionic surfactant Q2-8220™ is an aminosilicone oil from Dow Corning. Its viscosity was measured as 160 mPas with a "Bohlin CV 120 High Resolution" viscometer at 22°C and a shear rate of 100s-1 using the cone and plate method.
- Emulsion softening systems were prepared by the methods outlined in
WO 04/111169 - The 20% active content levels of the emulsions used as well as the % active content of the resulting granules indicate total silicone actives, in this case the combination of the LBG-silicone conjugate and softening silicone.
- The weight ratio of the LBG-silicone conjugate to the softening silicone for each of the emulsions was 1:9. Thus the 20% active content level of the emulsion was made up of 2% LBG-silicone conjugate + 18% softening silicone.
- 14.7g of the emulsion softening system was granulated with 20g of habit modified sodium carbonate in a laboratory-scale high shear mixer (Braun MR4050HC). The resultant granules were then air dried at approximately 25°C. The dried product was sieved between 180 and 1400 microns. The "active" content of these granules is 8.5%.
- 14.7g of the emulsion softening system was granulated with 20g of habit modified sodium carbonate in a laboratory-scale high shear mixer (Braun MR4050HC). The resultant granules were then air dried at approximately 45°C. The dried product was sieved between 180 and 1400 microns. The "active" content of these granules is 11.2%.
- 100g of the emulsion softening system was concentrated by removal of water in a Buchi™ rotary evaporator to a final weight of 56.2g (the concentrate now has an active content of 35.6%).
- 20.75g of this concentrated emulsion was granulated with 30g of habit modified sodium carbonate in a laboratory-scale high shear mixer (Braun MR4050HC). The resultant granules were then oven-dried at 45°C. The dried product was sieved between 180 and 1400 microns. The "active" content of these granules is 17.4%.
- 100g of the emulsion softening system was concentrated by removal of water in a Buchi™ rotary evaporator to a final weight of 56.2g (the concentrate now has an active content of 35.6%).
- 20.75g of this concentrated emulsion was granulated with 30g of habit modified sodium carbonate in a laboratory-scale high shear mixer (Braun MR4050HC). The resultant granules were then oven-dried at 85°C. The dried product was sieved between 180 and 1400 microns. The "active" content of these granules is 19.8%.
- 100g of the emulsion softening system was concentrated by removal of water in a Buchi™ rotary evaporator to a final weight of 56.2g (the concentrate now has an active content of 35.6%).
- 13.3g of this concentrated emulsion was granulated with 25g of commercial grade sodium carbonate (light ash ex. Brunner Mond) in a laboratory-scale high shear mixer (Braun MR4050HC). The resultant granules were then oven-dried at 85°C. The dried product was sieved between 180 and 1400 microns. The "active" content of these granules is 15.9%.
Table 1 Granules Emulsion Concentration Step? Inorganic carrier Drying Temp °C Active level A No Habit modified NaCO3 25 8.5 B No Habit modified NaCO3 45 11.2% C Yes Habit modified NaCO3 45 17.4% D Yes Habit modified NaCO3 85 19.8% E Yes NaCO3 85 15.9% - Comparative alginate granules were produced in accordance with
WO 2006/117385 . - Silicone dosage was based on theoretical silicone levels in the granules. These were calculated to give equivalent silicone dosage on the fabric monitors of 2mg silicone per g of fabric (100% pick-up of silicone is assumed), for each granule type. This level of silicone equates to 4.3% silicone in the Persil powder.
- The fabrics used in both the softening test (white cotton terry towelling) and residues test (black jersey cotton interlock), were pre-washed before use. Standard protocols for desizing were used for this pre-washing, generally 2 washes at 60°C with a European reference detergent.
- A RotaWash™ was used to simulate conditions in typical full-scale European Front Loading Automatic (FLA) washing machines. The RotaWash™ is a small scale washer with 12 individual wash 'pots', each with a capacity of 250mls. In these experiments, each wash pot contains a single piece of fabric.
- Conditions used below simulate as near as possible those of a standard 40°C cotton wash in a European FLA washing machine, using the RotaWash. Four repeat wash pots were ran per granule type. This gives sufficient replicates for the instrumental shear measurements.
Temp 40°C Water Hardness Wirral water (12-14' French Hardness) Liquor:Cloth ratio 8:1 (Liquor = 132 mls) Cloth type White terry towelling, 1 piece per pot (21cm2) ~ 16.5g Ballbearings 25 in each pot Powder Persil™ Bio non-perfumed (pre-dissolved before adding to pots) Powder dosage 5.8 g/l (66 mls of 11.6g/l stock, plus 66 mls Wirral water) Wash time 45 mins Rinses 2 x 10 min rinses (with agitation), using 250ml Wirral water per rinse Drying Line dry - The following chart (table 2) shows softness delivery measured by Shear Hysteresis (Instrumental Shear measurement) from the Persil™ Bio powder (2006 UK commercially available laundry detergent product) with addition of various LBG-Silicone granules made according to example 1 and in comparison to the alginate softening granules.
Table 2 Composition Shear Hysteresis 2HG5 Control (Persil™ Bio Powder) 6.20 Alginate granules, 80% silicone 3.61 Granules D LBG-silicone/Carbonate granule, 17.4% silicone 4.10 Granules C LBG-silicone/Carbonate granule, 19.8% silicone 4.22 - Reduction in shear hysteresis values when compared to the control show lower friction values for the fabric and hence a softness benefit to the laundered fabric for the alginate granules as well as for the two LBG-silicone/carbonate granules, granules D & C.
- Subjective assessment of fabrics washed with silicone were significantly softer to the hand than without softener - showing that consumer acceptable softening is delivered from the carbonate granules as well as from the alginate granules.
- Carbonate granules show improved physical properties (reduction of oil leakage and stickiness) on storage at 28°C/70% RH (8 weeks), compared with alginate granules. After this period the carbonate granules were still free flowing, while the alginate granules were a sticky mass stuck together by leaked silicone, and were unacceptable for use in formulations.
- Conditions used below simulate as near as possible those of the standard 30°C residues test in a full scale FLA washing machine, using a black wash load of knitted cotton, low agitation wash (Woollens wash cycle). Again, the RotaWash™ was used, and two repeat wash pots were run per granule type.
Temp 30°C Water Hardness Wirral water (12-14' French Hardness) Liquor:Cloth ratio 8:1 (Liquor = 132 mls) Cloth type Black jersey interlock, 1 piece per pot, 1 piece per pot (21cm2) ~ 16.5g Ballbearings Not included to reduce agitation Powder Persil™ Bio non-perfumed (pre-dissolved before adding to pots) Powder dosage 5.8 g/l (66 mls of 11.6g/l stock, plus 66 mls Wirral water) Wash time 24 mins Rinses 2 x 10 min rinses (with agitation), using 250ml Wirral water per rinse Drying Line dry - Visual assessment of black fabric washed with Persil™ Bio powder + LBG-Silicone/carbonate granules (tested separately with both 'C' and 'D' granules from table 1) and Persil™ Bio powder + alginate granules showed a considerably lower level of visible residues for the carbonate granules (for both 'C' and 'D') compared with the alginate granules. This was based on a visual assessment of the washed and dried black monitor fabrics by 3 people. Unlike the alginate granules, no particle residues were seen with the carbonate granules. The same result was seen for fabrics from both replicate washes.
Claims (14)
- A solid softening granule comprising:(i) from 1 to 30 wt.% of a softening system which comprises a locust bean gum polysaccharide and a softening silicone in a weight ratio of from 1:200 to 1:5; and,(ii) from 70 to 99 wt.% of an inorganic carrier selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof.
- A solid softening granule according to claim 1, wherein the softening system is present in the softening granule at a level of from 5 to 25 wt.%
- A solid softening granule according to claim 1 or claim 2, wherein the inorganic carrier is present in the softening granule at a level of from 75 to 95 wt.%.
- A solid softening granule according to any preceding claim, wherein the softening silicone is present in the softening granule at a level of from 10 to 25 wt.%.
- A solid softening granule according to any preceding claim, wherein the locust bean gum polysaccharide is covalently attached to one or more silicone materials chosen from polydialkyl siloxanes, amine derivatives thereof, and mixtures thereof.
- A solid softening granule according to claim 1 wherein the inorganic carrier is sodium carbonate, preferably habit modified sodium carbonate.
- A solid softening granule according to any preceding claim, wherein the softening silicone present in the softening system comprises aminosilicone.
- A solid softening granule according to any preceding claim, wherein the locust bean gum polysaccharide has one or more silicone chains covalently attached, the softening silicone comprises aminosilicone and the inorganic carrier is habit modified sodium carbonate.
- A laundry treatment composition comprising:-(i) from 0.1 to 25 wt.% of a solid softening granule of any one of claims 1 to 8,(ii) from 2 to 70 wt.% of a surfactant; and,(iii) from 1 to 70 wt.% of a builder.
- Use of an effective amount of the laundry treatment composition of claim 9 to scften fabric in the wash.
- A domestic method of treating a textile, comprising the steps of:(i) treating a textile with an aqueous solution of from 1 to 20 g/l of the laundry treatment composition cf claim 9; and,(ii) rinsing and drying the textile.
- A process for making the solid softening granules of any one of claims 1 to 8, wherein the process includes the steps of:-a) provision of an emulsion comprising water and a softening system which comprises a locust bean gum polysaccharide and a softening silicone in a weight ratio of from 1:200 to 1:5;b) granulation, of the emulsion with an inorganic carrier selected from alkali metal and alkaline earth metal salts of carbonate and bicarbonate, or a mixture thereof in a high shear mixer; and,c) drying the resulting granules.
- A process according to claim 12, wherein the emulsion of step a) is concentrated by water evaporation to provide an emulsion comprising from 30 to 60% water.
- A process according to claim 12 or claim 13, wherein the drying step c) is carried out at a level of from 20 to 100°C.
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US8841246B2 (en) | 2011-08-05 | 2014-09-23 | Ecolab Usa Inc. | Cleaning composition containing a polysaccharide hybrid polymer composition and methods of improving drainage |
US8853144B2 (en) | 2011-08-05 | 2014-10-07 | Ecolab Usa Inc. | Cleaning composition containing a polysaccharide graft polymer composition and methods of improving drainage |
US8679366B2 (en) | 2011-08-05 | 2014-03-25 | Ecolab Usa Inc. | Cleaning composition containing a polysaccharide graft polymer composition and methods of controlling hard water scale |
US8636918B2 (en) | 2011-08-05 | 2014-01-28 | Ecolab Usa Inc. | Cleaning composition containing a polysaccharide hybrid polymer composition and methods of controlling hard water scale |
CN103945828A (en) | 2011-11-04 | 2014-07-23 | 阿克佐诺贝尔化学国际公司 | Hybrid dendrite copolymers, compositions thereof and methods for producing the same |
US9051406B2 (en) | 2011-11-04 | 2015-06-09 | Akzo Nobel Chemicals International B.V. | Graft dendrite copolymers, and methods for producing the same |
US8945314B2 (en) | 2012-07-30 | 2015-02-03 | Ecolab Usa Inc. | Biodegradable stability binding agent for a solid detergent |
US9365805B2 (en) | 2014-05-15 | 2016-06-14 | Ecolab Usa Inc. | Bio-based pot and pan pre-soak |
EP3241889B1 (en) * | 2016-05-03 | 2019-03-20 | The Procter and Gamble Company | Cleaning composition |
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EP1561806B2 (en) * | 2004-02-03 | 2018-04-04 | The Procter & Gamble Company | A composition for use in the laundering or treatment of fabrics, and a process for making the composition |
DE102005020551A1 (en) * | 2005-05-03 | 2006-11-09 | Degussa Ag | Solid, redispersible emulsion |
GB0514716D0 (en) * | 2005-07-19 | 2005-08-24 | Unilever Plc | Process to form fabric softening particle,particle obtained and its use |
-
2009
- 2009-05-20 EP EP09769082A patent/EP2294169B1/en not_active Not-in-force
- 2009-05-20 BR BRPI0914753A patent/BRPI0914753A2/en not_active IP Right Cessation
- 2009-05-20 ES ES09769082T patent/ES2398425T3/en active Active
- 2009-05-20 WO PCT/EP2009/056119 patent/WO2009156233A1/en active Application Filing
- 2009-05-20 CN CN200980124127.1A patent/CN102076836B/en not_active Expired - Fee Related
-
2010
- 2010-12-13 ZA ZA2010/08966A patent/ZA201008966B/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA201008966B (en) | 2012-02-29 |
EP2294169A1 (en) | 2011-03-16 |
CN102076836A (en) | 2011-05-25 |
CN102076836B (en) | 2013-05-22 |
BRPI0914753A2 (en) | 2015-10-20 |
WO2009156233A1 (en) | 2009-12-30 |
ES2398425T3 (en) | 2013-03-19 |
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