EP3650522A1 - Reduction of malodour from laundry - Google Patents
Reduction of malodour from laundry Download PDFInfo
- Publication number
- EP3650522A1 EP3650522A1 EP18205467.6A EP18205467A EP3650522A1 EP 3650522 A1 EP3650522 A1 EP 3650522A1 EP 18205467 A EP18205467 A EP 18205467A EP 3650522 A1 EP3650522 A1 EP 3650522A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- malodour
- composition
- srp
- fabrics
- wash
- 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.)
- Withdrawn
Links
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- 239000002689 soil Substances 0.000 claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 14
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- 229920001577 copolymer Polymers 0.000 claims abstract description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 125000003118 aryl group Chemical group 0.000 claims abstract description 7
- 239000000178 monomer Substances 0.000 claims abstract description 7
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- 238000003860 storage Methods 0.000 claims description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 2
- 238000005406 washing Methods 0.000 description 37
- 229920000728 polyester Polymers 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 16
- 238000001035 drying Methods 0.000 description 14
- 238000004900 laundering Methods 0.000 description 13
- 238000011068 loading method Methods 0.000 description 13
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- 238000009472 formulation Methods 0.000 description 8
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- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 150000004665 fatty acids Chemical class 0.000 description 7
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- 229920000742 Cotton Polymers 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 6
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- 150000003839 salts Chemical class 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- BKFRZOZNMWIFLH-UHFFFAOYSA-N 1-decyl-2-methylimidazole Chemical compound CCCCCCCCCCN1C=CN=C1C BKFRZOZNMWIFLH-UHFFFAOYSA-N 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 4
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 4
- 239000003205 fragrance Substances 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- 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 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
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- 239000000945 filler Substances 0.000 description 3
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- 239000010452 phosphate Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229960004063 propylene glycol Drugs 0.000 description 3
- 235000013772 propylene glycol Nutrition 0.000 description 3
- 230000001953 sensory effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- 229920001634 Copolyester Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 239000003139 biocide Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000012487 rinsing solution Substances 0.000 description 2
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- 239000007787 solid Substances 0.000 description 2
- 150000003871 sulfonates Chemical class 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- OFUWTKCHDWYPHM-UHFFFAOYSA-N 2-(2-ethoxyethyl)guanidine hydrochloride Chemical compound Cl.CCOCCN=C(N)N OFUWTKCHDWYPHM-UHFFFAOYSA-N 0.000 description 1
- OWOSSTCHCATHMM-UHFFFAOYSA-N 2-methyl-1-octylimidazole Chemical compound CCCCCCCCN1C=CN=C1C OWOSSTCHCATHMM-UHFFFAOYSA-N 0.000 description 1
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- SFHBJXIEBWOOFA-UHFFFAOYSA-N 5-methyl-3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical compound O=C1OC(C)COC(=O)C2=CC=C1C=C2 SFHBJXIEBWOOFA-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000207199 Citrus Species 0.000 description 1
- RUPBZQFQVRMKDG-UHFFFAOYSA-M Didecyldimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC RUPBZQFQVRMKDG-UHFFFAOYSA-M 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 241000192041 Micrococcus Species 0.000 description 1
- 241000191938 Micrococcus luteus Species 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002413 Polyhexanide Polymers 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 206010040904 Skin odour abnormal Diseases 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 241000191940 Staphylococcus Species 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001279 adipic acids Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 125000004103 aminoalkyl group Chemical group 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000008365 aqueous carrier Substances 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229960000686 benzalkonium chloride Drugs 0.000 description 1
- UREZNYTWGJKWBI-UHFFFAOYSA-M benzethonium chloride Chemical compound [Cl-].C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 UREZNYTWGJKWBI-UHFFFAOYSA-M 0.000 description 1
- 229960001950 benzethonium chloride Drugs 0.000 description 1
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 description 1
- 150000004283 biguanides Chemical class 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 229960004670 didecyldimethylammonium chloride Drugs 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 229940093476 ethylene glycol Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002979 fabric softener Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- DNXDYHALMANNEJ-UHFFFAOYSA-N furan-2,3-dicarboxylic acid Chemical compound OC(=O)C=1C=COC=1C(O)=O DNXDYHALMANNEJ-UHFFFAOYSA-N 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229960000789 guanidine hydrochloride Drugs 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- PJJJBBJSCAKJQF-UHFFFAOYSA-N guanidinium chloride Chemical compound [Cl-].NC(N)=[NH2+] PJJJBBJSCAKJQF-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000003752 hydrotrope Substances 0.000 description 1
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- 238000005342 ion exchange Methods 0.000 description 1
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- 229920001427 mPEG Polymers 0.000 description 1
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- 230000000813 microbial effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- NYNKJVPRTLBJNQ-UHFFFAOYSA-N n'-(3-aminopropyl)-n'-dodecylpropane-1,3-diamine Chemical compound CCCCCCCCCCCCN(CCCN)CCCN NYNKJVPRTLBJNQ-UHFFFAOYSA-N 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000006916 nutrient agar Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- 239000003605 opacifier Substances 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 150000004028 organic sulfates Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- 239000003346 palm kernel oil Substances 0.000 description 1
- 235000019865 palm kernel oil Nutrition 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
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- 239000005020 polyethylene terephthalate Substances 0.000 description 1
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- 239000006254 rheological additive Substances 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229960001922 sodium perborate Drugs 0.000 description 1
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- 235000011152 sodium sulphate Nutrition 0.000 description 1
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- 239000000516 sunscreening agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- 150000003504 terephthalic acids Chemical class 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
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- ZKWDCFPLNQTHSH-UHFFFAOYSA-N tribromoisocyanuric acid Chemical class BrN1C(=O)N(Br)C(=O)N(Br)C1=O ZKWDCFPLNQTHSH-UHFFFAOYSA-N 0.000 description 1
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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
- C11D3/0036—Soil deposition preventing compositions; Antiredeposition agents
-
- 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
- C11D3/0068—Deodorant 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
- C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
-
- C11D2111/12—
Definitions
- the invention relates to the reduction of malodour on synthetic fabrics, especially those synthetic fabrics found in performance garments.
- Performance garments are garments that are configured so that a wearer may comfortably perform a range of exercises in the garment. Performance garments are also sometimes referred to as sportswear, activewear, or athletic wear. More recently, due to the popularity of wearing performance garments as casual wear in addition to during exercise, some performance garments have also begun to be referred to as athleisure garments. To render them particularly suitable for a range of exercise, performance garments are usually made of synthetic fabrics such as polyester, which excels at moisture wicking and helps to pull moisture away from the skin to keep the wearer dry and comfortable.
- SRPs soil release polymers
- the invention provides the use of a nonionic soil release polymer (SRP) as an anti-malodour active for synthetic fabrics; the nonionic soil release polymer being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units.
- SRP soil release polymer
- the invention also provides the use of a laundry detergent composition
- a laundry detergent composition comprising:
- anti-malodour active in the context of this invention denotes an active which can reduce malodour on synthetic fabrics. Such actives may reduce the concentration of malodorous compounds in the air and/or reduce the perception of malodour to the human nose as measured by either chemical analysis or sensory methods.
- SRPs for use in the invention may include a variety of nonionic monomer units and structures may be linear, branched or star-shaped.
- the SRP structure may also include capping groups (typically C 1-4 alkyl such as methyl) to control molecular weight.
- the weight average molecular weight (M w ) of the SRP may suitably range from about 1000 to about 20,000 and preferably ranges from about 1500 to about 10,000.
- Nonionic SRPs for use in the invention may suitably be selected from copolyesters of aromatic dicarboxylic acids (for example furandicarboxylic acid, phthalic acid or terephthalic acid), alkylene glycol (for example ethylene glycol or propylene glycol) and polydiols (for example polyethylene glycol or polypropylene glycol).
- aromatic dicarboxylic acids for example furandicarboxylic acid, phthalic acid or terephthalic acid
- alkylene glycol for example ethylene glycol or propylene glycol
- polydiols for example polyethylene glycol or polypropylene glycol
- Such materials include oligomeric esters produced by transesterification/oligomerization of poly(ethyleneglycol) methyl ether, dimethyl terephthalate (“DMT”), propylene glycol (“PG”) and poly(ethyleneglycol) (“PEG”); nonionic-capped block polyester oligomeric compounds such as those produced from DMT, Me-capped PEG and EG and/or PG, and copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate.
- DMT dimethyl terephthalate
- PG propylene glycol
- PEG poly(ethyleneglycol)
- nonionic-capped block polyester oligomeric compounds such as those produced from DMT, Me-capped PEG and EG and/or PG, and copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate.
- Preferred nonionic SRPs for use in the invention include copolyesters formed by condensation of terephthalic acid ester and diol, preferably 1,2 propanediol, and further comprising an end cap formed from repeat units of alkylene oxide capped with an alkyl group. Examples of such materials have a structure corresponding to general formula (I):
- n, n and a are not necessarily whole numbers for the polymer in bulk.
- the level of nonionic SRP is suitably at least 0.5%, and is preferably at least 0.8%, such as from 0.8 to 10% and most preferably from 1 to 5% (by weight based on the total weight of the composition).
- a laundry detergent composition for use in this invention is intended for and capable of wetting and cleaning synthetic fabrics as part of a domestic laundering process, either by hand or in the wash cycle of automatic washing machines.
- Polyesters are a general group of polymers derived from terephthalic or adipic acids, for example polyethylene terephthalate. They can be melt spun into fibres or filaments which are then made into yarns for knitting or weaving into polyester fabrics.
- a laundry detergent composition for use in this invention may suitably be in liquid or particulate form, or a mixture thereof.
- pill in the context of this invention denotes free-flowing or compacted solid forms such as powders, granules, pellets, flakes, bars, briquettes or tablets.
- a particulate laundry detergent composition according to the invention is a free-flowing powdered solid, with a loose (unpackaged) bulk density generally ranging from about 200g/l to about 1,300 g/l, preferably from about 400 g/l to about 1,000 g/l, more preferably from about 500g/l to about 900 g/l.
- a laundry detergent composition for use in this invention is most preferably in liquid form.
- a laundry detergent for use in this invention will suitably comprise from 5 to 60% (by weight based on the total weight of the composition) of one or more detersive surfactants.
- detersive surfactant and the amount present, will depend on the intended use of the laundry detergent. For example, different surfactant systems may be chosen for hand-washing products and for products intended for use in different types of automatic washing machine.
- the total amount of surfactant present will also depend on the intended end use and may, in fully formulated products, be as high as 60% (by weight based on the total weight of the composition) in a composition for washing fabrics by hand. In compositions for machine washing of fabrics, an amount of from 5 to 30% (by weight based on the total weight of the composition) is generally appropriate.
- Detersive surfactants for use in the invention may suitably be selected from non-soap anionic surfactants, which are typically salts of organic sulfates and sulfonates 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 such materials include alkyl sulfates, alkyl ether sulfates, alkaryl sulfonates, alpha-olefin sulfonates and mixtures thereof.
- the alkyl radicals preferably contain from 10 to 18 carbon atoms and may be unsaturated.
- the alkyl ether sulfates may contain from one to ten ethylene oxide or propylene oxide units per molecule, and preferably contain one to three ethylene oxide units per molecule.
- the counterion for anionic surfactants is generally an alkali metal such as sodium or potassium; or an ammoniacal counterion such as monoethanolamine, (MEA) diethanolamine (DEA) or triethanolamine (TEA).
- the total level of non-soap anionic surfactant may suitably range from 5 to 30% (by weight based on the total weight of the composition).
- surfactants may also be selected from nonionic surfactants, which are typically aliphatic C 8 to C 18 , more preferably C 12 to C 15 , primary linear alcohol ethoxylates with an average of from 3 to 20, more preferably from 5 to 10 moles of ethylene oxide per mole of alcohol.
- sugar-derived nonionic surfactants such as alkyl polyglycosides corresponding to the general formula R 1 O(R 2 O) b (Z) a in which R 1 is a monovalent hydrocarbyl group having from 6 to 30 carbon atoms; R 2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide (preferably glucose) residue having 5 or 6 carbon atoms; b is a number having a value from 0 to 12 (preferably 0) and a is a number having a value from 1 to 6.
- R 1 is a monovalent hydrocarbyl group having from 6 to 30 carbon atoms
- R 2 is a divalent alkylene radical having from 2 to 4 carbon atoms
- Z is a saccharide (preferably glucose) residue having 5 or 6 carbon atoms
- b is a number having a value from 0 to 12 (preferably 0) and a is a number having a value from 1 to 6.
- the total level of nonionic surfactant may suitably range from 0 to 25% (by weight based on the total weight of the composition).
- a liquid laundry detergent composition for use in the invention may generally comprise from 5 to 95%, preferably from 10 to 90%, more preferably from 15 to 85% water (by weight based on the total weight of the composition).
- the composition may also incorporate from 0.1 to 15% (by weight based on the total weight of the composition) of non-aqueous carriers such as hydrotropes, co-solvents and phase stabilizers.
- a laundry detergent composition for use in the invention may contain one or more builders.
- Builders enhance or maintain the cleaning efficiency of the surfactant, primarily by reducing water hardness. This is done either by sequestration or chelation (holding hardness minerals in solution), by precipitation (forming an insoluble substance), or by ion exchange (trading electrically charged particles).
- Builders for use in the invention can be of the organic or inorganic type, or a mixture thereof. Non-phosphate builders are preferred.
- Preferred inorganic, non-phosphate builders for use in the invention may be selected from zeolites, sodium carbonate, ⁇ -sodium disilicate and mixtures thereof.
- Preferred organic, non-phosphate builders for use in the invention may be selected from polycarboxylates (e.g. citrates) in acid and/or salt form and mixtures thereof.
- polycarboxylates e.g. citrates
- the overall level of builder when included, may range from about 0.1 to about 80%, preferably from about 0.5 to about 50% (by weight based on the total weight of the composition).
- a particulate laundry detergent composition for use in the invention may include one or more fillers to assist in providing the desired density and bulk to the composition.
- Preferred fillers for use in the invention include alkali metal (more preferably sodium and/or potassium) sulfates and chlorides and mixtures thereof, with sodium sulfate and/or sodium chloride being most preferred.
- Filler when included, may be present in a total amount ranging from about 1 to about 80%, preferably from about 5 to about 50% (by weight based on the total weight of the composition).
- a laundry detergent composition for use in the invention may include one or more polymeric cleaning boosters such as antiredeposition polymers.
- Anti-redeposition polymers stabilise the soil in the wash solution thus preventing redeposition of the soil.
- a preferred material is ethoxylated polyethyleneimine, with an average degree of ethoxylation being from 10 to 30, preferably from 15 to 25 ethoxy groups per ethoxylated nitrogen atom in the polyethyleneimine backbone.
- Another type of suitable anti-redeposition polymer for use in the invention includes cellulose esters and ethers, for example sodium carboxymethyl cellulose.
- the overall level of anti-redeposition polymer when included, may range from 0.05 to 6%, more preferably from 0.1 to 5% (by weight based on the total weight of the composition).
- a laundry detergent composition for use in the invention may in some cases contain one or more fatty acids and/or salts thereof.
- Preferred examples of such materials include saturated C12-18 fatty acids such as lauric acid, myristic acid, palmitic acid or stearic acid; and fatty acid mixtures in which 50 to 100% (by weight based on the total weight of the mixture) consists of saturated C12-18 fatty acids.
- Such mixtures may typically be derived from natural fats and/or optionally hydrogenated natural oils (such as coconut oil, palm kernel oil or tallow).
- the fatty acids may be present in the form of their sodium, potassium or ammonium salts and/or in the form of soluble salts of organic bases, such as mono-, di- or triethanolamine.
- Fatty acids and/or their salts when included, may be present in an amount ranging from about 0.25 to 5%, more preferably from 0.5 to 5%, most preferably from 0.75 to 4% (by weight based on the total weight of the composition).
- fatty acids and/or their salts are not included in the level of surfactant or in the level of builder.
- a liquid laundry detergent composition for use in the invention may comprise one or more rheology modifiers.
- rheology modifiers include polymeric thickeners, such as hydrophobically modified alkali swellable emulsion (HASE) copolymers; and/or structurants which form a network within the composition, such as hydrogenated castor oil, microfibrous cellulose and citrus pulp fibre.
- a liquid laundry detergent composition for use in the invention preferably has a pH in the range of 5 to 9, more preferably 6 to 8, when measured on dilution of the composition to 1% (by weight based on the total weight of the composition) using demineralised water.
- a laundry detergent composition for use in the invention may contain further optional ingredients to enhance performance and/or consumer acceptability.
- additional optional ingredients include fragrance, foam boosting agents, antioxidants, sunscreens, anticorrosion agents, colorants, pearlisers and/or opacifiers, and shading dye.
- fragrance e.g., peppermint, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony, colophony
- a laundry detergent composition of the invention for use in the invention generally contains no more than 0.2%, preferably no more than 0.1%, more preferably no more than 0.01% and most preferably 0% (by weight based on the total weight of the composition) of oxidising agents selected from halogen-based bleaches (e.g. alkali metal hypochlorites and alkali metal salts of di- and tri-chloro and di- and tri-bromo cyanuric acids), oxygen-based bleaches (e.g. sodium perborate (tetra-or monohydrate), sodium percarbonate and hydrogen peroxide) and mixtures thereof.
- halogen-based bleaches e.g. alkali metal hypochlorites and alkali metal salts of di- and tri-chloro and di- and tri-bromo cyanuric acids
- oxygen-based bleaches e.g. sodium perborate (tetra-or monohydrate), sodium percarbonate and hydrogen peroxide
- a laundry detergent composition for use in the invention generally contains no more than 0.2% and preferably no more than 0.1% (by weight based on the total weight of the composition of biocides selected from quaternary ammonium salts (such as benzalkonium chloride, didecyldimethylammonium chloride, didecylmethylpolyoxyethyleneammonium propionate, didecylmethylammonium carbonate, or benzethonium chloride); imidazolium derivatives (such as 1,10-di(3-decyl-2-methylimidazolium)decane dichloride, 1,10-di(3-decyl-2-methylimidazolium)decane dibromide, 1,12-di(3-decyl-2-methylimidazolium)dodecane dichloride, 1,12-di(3-octyl-2-methylimidazolium)dodecane dichloride, or 1,10-di(3-dec
- a laundry detergent composition for use in the invention may be packaged as unit doses in polymeric film soluble in the wash water.
- the detergent composition of the invention may be supplied in multidose plastics packs with a top or bottom closure.
- a dosing measure may be supplied with the pack either as a part of the cap or as an integrated system.
- the laundry detergent composition as described above is used for the reduction of malodour on synthetic fabrics laundered therewith.
- a suitable laundering method for synthetic fabrics in the context of this invention comprises diluting a dose of the laundry detergent composition as described above to obtain a wash liquor, and soaking and/or agitating the fabrics with the wash liquor so formed in a laundry vessel, followed by rinsing the laundry in water.
- the duration of such a method is preferably in the range of from 10 minutes to 3 hours, more preferably from 10 minutes to 1 hour and most preferably from 15 to 45 minutes.
- the total quantity of fabric relative to wash liquor generally ranges from about 8 to about 20g fabric per litre of wash liquor and preferably ranges from about 10 to about 15g fabric per litre of wash liquor.
- the fabrics are placed into the drum of an automatic washing machine, and a wash cycle is run.
- the dose of laundry detergent composition is typically put into a dispenser and from there it is flushed into the machine by the water flowing into the machine, thereby forming the wash liquor.
- Dosages for a typical front-loading washing machine (using 10 to 15 litres of water to form the wash liquor) may range from about 10 ml to about 100 ml, preferably about 15 to 75 ml.
- Dosages for a typical top-loading washing machine (using from 40 to 60 litres of water to form the wash liquor) may be higher, e.g. 100 ml or more.
- Lower dosages of detergent e.g. 50 ml or less) may be used for hand washing methods (using about 1 to 10 litres of water to form the wash liquor).
- An automatic washing machine for use in the invention may be any conventional automatic washing machine useful for the laundering of fabrics.
- Such automatic washing machines are those typically found in the home or in businesses such as self-service launderettes where individual consumers can launder their own loads of fabrics.
- Washing machines utilize a mechanical agitator to produce agitation of washing and rinsing solutions.
- Automatic washing machines are also fitted with means for controlling wash and rinse water temperatures and wash and rinse duration.
- Automatic washing machines can also provide the means for both forming and removing washing and rinsing solutions by using filling and draining apparatus and filling, draining and/or spin cycles
- An automatic washing machine for use in the method of the invention will generally comprise an external casing; a wash tub connected in floating manner to the casing by one or more suspension devices; a perforated laundry drum for housing laundry for washing, and which is mounted inside the wash tub to rotate about an axis of rotation; and a drive unit connected by a connecting member to the laundry drum to rotate it, on command, about the axis of rotation.
- a loading/unloading door ensures access to the drum.
- the drum capacity will generally range from about 2 up to about 10 kg, more typically up to about 6kg of dry cotton laundry.
- Top-loading machines have an upright or vertical drum into which fabrics to be laundered are placed. Fabrics are added into the drum, which is usually cylindrical, from the lidded top of the machine. Top-loading machines frequently have a moving agitator element placed along the axis of the drum. Rotation and vertical motion of the agitator serves to intensify the laundering action.
- Front-loading machines have a drum, also generally cylindrical, which is positioned with the drum axis sideways or in a horizontal position. Fabrics are added into the drum through a door on the front wall of the machine. Front-loading machines typically do not have an agitator element.
- Mechanical energy is instead imparted to the laundry by the tumbling action formed by the repeated lifting and dropping of the laundry which is implemented by the rotating drum.
- the drum may also incorporate lifting vanes or similar protrusions to lift the laundry.
- front-loading automatic washing machines are often preferred due to their superior water and energy efficiency.
- wash cycle in the context of this invention denotes a cycle of operation generally employed in automatic washing machines, in which the machine goes through a series of stages during which water is added, contacted with fabrics being laundered and then extracted from the washing machine drum by spinning.
- Awash cycle will typically consist of at least a wash stage, a rinse stage and a spin stage.
- the wash stage, the rinse stage and the spin stage may themselves consist of several steps, such as a fill step, a drain step, a pause step, an agitation step, and any combination thereof.
- a user may select one of several laundering options (programmes) based upon the type of laundry load being placed in the washing machine (e.g.
- a wash cycle may also involve one or more additional wash and/or spin and/or rinsing stages respectively, depending on the programme selected.
- a preferred type of wash cycle in the context of this invention would be a synthetics programme characterised by a wash temperature ranging from 20 to 40°C, from 1 to 3 rinses and a spin speed of less than 1000 rpm, such as from 500 to 800 rpm.
- the wash stage duration of a such a programme is usually from about 30 to 40 minutes with the wash cycle overall duration being from about 50 to 70 minutes.
- a subsequent aqueous rinse step and drying the laundry is preferred. Any input of water during any optional rinsing step(s) is not included when determining the volume of the wash liquor. Drying of synthetic fabrics (particularly polyester) is most preferably carried out by air or cool tumble drying. Generally, the fabrics will be dried to a residual moisture level of no more than about 5% (based on dry fabric weight), preferably from 0 to 2.5% (based on dry fabric weight).
- sensory and/or chemical and/or microbiological assessments of the treated fabrics may be carried out at various stages of the laundering process.
- assessment may suitably be carried out after completion of the laundering process (e.g. up to 2 hours after drying). and/or after the dried fabric is stored without further treatment for a storage period of at least 24 hours, preferably at least 3 days and more preferably from 4 to 8 days.
- Fabric malodour developing after storage is a particular problem for performance garments which may often accumulate in laundry baskets or sports bags.
- malodour assessments may be carried out using trained panellists to determine hedonic value, intensity, and qualitative odour characteristics.
- Malodour causing substances may be quantitatively detected by using methods such as column chromatography.
- Microbial communities may be measured using plate count techniques involving the growth of colonies on a nutrient agar surface.
- a panel of 32 women was divided into four groups of eight. Each was given a cotton T-shirt modified to accommodate knitted polyester swatches in the underarm region of the shirt. These swatches are 14 cm x 18cm and made from 100% knitted polyester (Phoenix Calico - polyester cross-tuck 144g/m 2 ). Prior to first wear all the swatches are laundered in an unfragranced, bleach-containing detergent powder (SKIPTM) at recommended dose (120gms) in a ZanussiTM front loading automatic washing machine at 60°C. None of the swatches are pre-washed in the products under evaluation. Each panellist has four swatches assigned to them. These are worn in rotation as pre-assigned.
- SKIPTM bleach-containing detergent powder
- each panellist would wear two swatches; that in the left armpit having been washed in one product whilst that in the right armpit was washed in a separate product. Swatches were rotated in such a way that all panellists are exposed to swatches washed in all four products. In the current study, the process was continued out to four cycles. Laundered swatches were given to the panellists at a set time on the morning of each day of the test; they then wear them throughout the day and return the soiled swatches the following morning when they are reissued with a clean T-shirt and second pair of swatches.
- fragrance-free liquid detergent formulations given in Table 1(a) were evaluated at recommended dose (35ml) in a ZanussiTM front loading automatic washing machine at 40°C, on a synthetics wash cycle in 26°FH water by washing the appropriately coded soil swatches in the corresponding formulation.
- Each wash load also comprised 1 kg of clean 100% cotton and 1kg of 100% polyester together with 3 sheets of an industry recognised simulated soil-ballast (SBL-2004 ex. Krefeld test institute).
- SBL-2004 ex. Krefeld test institute The swatches were tumbled dried on cool setting following laundering and then assessed approximately 2 hours after drying.
- Table 1(c) The effect of the SRP on fragrance delivery for the four formulations is shown in Table 1(c). These results were obtained using a commercial sample of SURFTM, "Small and Mighty with essential oils", “Tropical” variant.
- Table 1(a) Ingredient wt% (as active ingredient) Formulation A B 1 2 Na LAS 11 11 11 11 Na LES (3EO) 6 6 6 6 C 12-15 7EO 17 17 17 17 Palm kernel soap 7 7 7 7 MPG 7 7 7 7 Glycerol 4 4 4 4 Sulfonated SRP 0 2 0 0 0 Nonionic SRP 0 0 2 0 Nonionic SRP 0 0 0 2 minors, water To 100% Table 1(b) Wash Wear Results - on polyester A B 1 2 % panel with malodour, averaged over cycles 1-4. 52 41 35 29 % panel with malodour, 7 days after cycle 4 70 63 55 50
- Table 1(c) shows that while any SRP reduces the intensity of perfume, the effect on perfume is comparable for the sulfonated and nonionic SRP whereas their performance as regards malodour development is different.
- the polyester used was Coolmax TM a rapid-wicking textile frequently used in sportswear.
- fragrance-free liquid detergent formulations given in Table 2 (a) were evaluated at recommended dose (35ml) in a Zanussi TM front loading automatic (FLA) washing machines at 40°C, on a synthetics wash cycle in 26°FH water by washing the appropriately coded soil swatches in the corresponding formulation.
- Each wash load also comprised 1 kg of clean 100% cotton and 1kg of 100% polyester together with 3 sheets of an industry recognised simulated soil-ballast (SBL-2004 ex. Krefeld test institute).
- SBL-2004 ex. Krefeld test institute industry recognised simulated soil-ballast
Abstract
The invention provides the use of a nonionic soil release polymer (SRP) as an anti-malodour active for synthetic fabrics; the nonionic soil release polymer being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units.
The invention also provides the use of a laundry detergent composition comprising:
from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants, and
a nonionic soil release polymer (SRP) being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units;
for the reduction of malodour on synthetic fabrics laundered therewith.
from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants, and
a nonionic soil release polymer (SRP) being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units;
for the reduction of malodour on synthetic fabrics laundered therewith.
Description
- The invention relates to the reduction of malodour on synthetic fabrics, especially those synthetic fabrics found in performance garments.
- Performance garments are garments that are configured so that a wearer may comfortably perform a range of exercises in the garment. Performance garments are also sometimes referred to as sportswear, activewear, or athletic wear. More recently, due to the popularity of wearing performance garments as casual wear in addition to during exercise, some performance garments have also begun to be referred to as athleisure garments. To render them particularly suitable for a range of exercise, performance garments are usually made of synthetic fabrics such as polyester, which excels at moisture wicking and helps to pull moisture away from the skin to keep the wearer dry and comfortable.
- Unfortunately, malodours tend to impregnate synthetic fabrics such as polyester, and may persist and develop even after laundering. Studies have found that not only does polyester smell far worse than cotton following intensive exercise, its fibres may act as a better substrate for growth of malodorous bacteria such as Staphylococcus and especially Micrococcus species (in particular M.luteus).
- Furthermore, many of the specialist fabrics used in performance garments require a tailored care regime to maintain good condition, with many manufacturers recommending low temperature washing (40°C or less), air or cool tumble drying, and avoidance of high detergent levels, oxidizing bleaches, harsh biocides and fabric softeners.
- As such, there is a need in the art for effective solutions to the problem of malodour on fabrics used in performance garments, without resorting to aggressive washing or drying regimes which may damage or degrade the integrity or performance of such fabrics.
- The present inventors have determined that certain soil release polymers (SRPs) have utility in the reduction of malodour from synthetic fabrics such as polyester.
- The invention provides the use of a nonionic soil release polymer (SRP) as an anti-malodour active for synthetic fabrics; the nonionic soil release polymer being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units.
- The invention also provides the use of a laundry detergent composition comprising:
- from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants, and
- a nonionic soil release polymer (SRP) being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units;
- for the reduction of malodour on synthetic fabrics laundered therewith.
- The term "anti-malodour active" in the context of this invention denotes an active which can reduce malodour on synthetic fabrics. Such actives may reduce the concentration of malodorous compounds in the air and/or reduce the perception of malodour to the human nose as measured by either chemical analysis or sensory methods.
- SRPs for use in the invention may include a variety of nonionic monomer units and structures may be linear, branched or star-shaped. The SRP structure may also include capping groups (typically C1-4 alkyl such as methyl) to control molecular weight. The weight average molecular weight (Mw) of the SRP may suitably range from about 1000 to about 20,000 and preferably ranges from about 1500 to about 10,000.
- Nonionic SRPs for use in the invention may suitably be selected from copolyesters of aromatic dicarboxylic acids (for example furandicarboxylic acid, phthalic acid or terephthalic acid), alkylene glycol (for example ethylene glycol or propylene glycol) and polydiols (for example polyethylene glycol or polypropylene glycol). Examples of such materials include oligomeric esters produced by transesterification/oligomerization of poly(ethyleneglycol) methyl ether, dimethyl terephthalate ("DMT"), propylene glycol ("PG") and poly(ethyleneglycol) ("PEG"); nonionic-capped block polyester oligomeric compounds such as those produced from DMT, Me-capped PEG and EG and/or PG, and copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate.
- Preferred nonionic SRPs for use in the invention include copolyesters formed by condensation of terephthalic acid ester and diol, preferably 1,2 propanediol, and further comprising an end cap formed from repeat units of alkylene oxide capped with an alkyl group. Examples of such materials have a structure corresponding to general formula (I):
- in which R1 and R2 independently of one another are X-(OC2H4)n-(OC3H6)m;
- in which X is C1-4 alkyl and preferably methyl;
- n is a number from 12 to 120, preferably from 40 to 50;
- m is a number from 1 to 10, preferably from 1 to 7; and
- a is a number from 4 to 9.
- Because they are averages, m, n and a are not necessarily whole numbers for the polymer in bulk.
- Mixtures of any of the above described materials may also be used.
- In a laundry detergent composition that includes nonionic SRP for the reduction of malodour on synthetic fabrics laundered therewith, the level of nonionic SRP is suitably at least 0.5%, and is preferably at least 0.8%, such as from 0.8 to 10% and most preferably from 1 to 5% (by weight based on the total weight of the composition).
- A laundry detergent composition for use in this invention is intended for and capable of wetting and cleaning synthetic fabrics as part of a domestic laundering process, either by hand or in the wash cycle of automatic washing machines.
- Preferred synthetic fabrics in the context of this invention are those used in performance garments, such as polyester fabrics. Polyesters are a general group of polymers derived from terephthalic or adipic acids, for example polyethylene terephthalate. They can be melt spun into fibres or filaments which are then made into yarns for knitting or weaving into polyester fabrics.
- A laundry detergent composition for use in this invention may suitably be in liquid or particulate form, or a mixture thereof.
- The term "particulate" in the context of this invention denotes free-flowing or compacted solid forms such as powders, granules, pellets, flakes, bars, briquettes or tablets.
- One preferred form for a particulate laundry detergent composition according to the invention is a free-flowing powdered solid, with a loose (unpackaged) bulk density generally ranging from about 200g/l to about 1,300 g/l, preferably from about 400 g/l to about 1,000 g/l, more preferably from about 500g/l to about 900 g/l.
- A laundry detergent composition for use in this invention is most preferably in liquid form.
- To provide a wetting and cleaning effect, a laundry detergent for use in this invention will suitably comprise from 5 to 60% (by weight based on the total weight of the composition) of one or more detersive surfactants. The choice of detersive surfactant, and the amount present, will depend on the intended use of the laundry detergent. For example, different surfactant systems may be chosen for hand-washing products and for products intended for use in different types of automatic washing machine. The total amount of surfactant present will also depend on the intended end use and may, in fully formulated products, be as high as 60% (by weight based on the total weight of the composition) in a composition for washing fabrics by hand. In compositions for machine washing of fabrics, an amount of from 5 to 30% (by weight based on the total weight of the composition) is generally appropriate.
- Detersive surfactants for use in the invention may suitably be selected from non-soap anionic surfactants, which are typically salts of organic sulfates and sulfonates 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 such materials include alkyl sulfates, alkyl ether sulfates, alkaryl sulfonates, alpha-olefin sulfonates and mixtures thereof. The alkyl radicals preferably contain from 10 to 18 carbon atoms and may be unsaturated. The alkyl ether sulfates may contain from one to ten ethylene oxide or propylene oxide units per molecule, and preferably contain one to three ethylene oxide units per molecule. The counterion for anionic surfactants is generally an alkali metal such as sodium or potassium; or an ammoniacal counterion such as monoethanolamine, (MEA) diethanolamine (DEA) or triethanolamine (TEA).
- Mixtures of any of the above described materials may also be used.
- In a laundry detergent composition according to the invention, the total level of non-soap anionic surfactant may suitably range from 5 to 30% (by weight based on the total weight of the composition).
- Further surfactants may also be selected from nonionic surfactants, which are typically aliphatic C8 to C18, more preferably C12 to C15, primary linear alcohol ethoxylates with an average of from 3 to 20, more preferably from 5 to 10 moles of ethylene oxide per mole of alcohol. Also suitable are sugar-derived nonionic surfactants such as alkyl polyglycosides corresponding to the general formula R1O(R2O)b(Z)a in which R1 is a monovalent hydrocarbyl group having from 6 to 30 carbon atoms; R2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide (preferably glucose) residue having 5 or 6 carbon atoms; b is a number having a value from 0 to 12 (preferably 0) and a is a number having a value from 1 to 6.
- Mixtures of any of the above described materials may also be used.
- In a laundry detergent composition for use in the invention, the total level of nonionic surfactant may suitably range from 0 to 25% (by weight based on the total weight of the composition).
- A liquid laundry detergent composition for use in the invention may generally comprise from 5 to 95%, preferably from 10 to 90%, more preferably from 15 to 85% water (by weight based on the total weight of the composition). The composition may also incorporate from 0.1 to 15% (by weight based on the total weight of the composition) of non-aqueous carriers such as hydrotropes, co-solvents and phase stabilizers.
- A laundry detergent composition for use in the invention may contain one or more builders. Builders enhance or maintain the cleaning efficiency of the surfactant, primarily by reducing water hardness. This is done either by sequestration or chelation (holding hardness minerals in solution), by precipitation (forming an insoluble substance), or by ion exchange (trading electrically charged particles).
- Builders for use in the invention can be of the organic or inorganic type, or a mixture thereof. Non-phosphate builders are preferred.
- Preferred inorganic, non-phosphate builders for use in the invention may be selected from zeolites, sodium carbonate, δ-sodium disilicate and mixtures thereof.
- Preferred organic, non-phosphate builders for use in the invention may be selected from polycarboxylates (e.g. citrates) in acid and/or salt form and mixtures thereof.
- Mixtures of any of the above described materials may also be used.
- The overall level of builder, when included, may range from about 0.1 to about 80%, preferably from about 0.5 to about 50% (by weight based on the total weight of the composition).
- A particulate laundry detergent composition for use in the invention may include one or more fillers to assist in providing the desired density and bulk to the composition. Preferred fillers for use in the invention include alkali metal (more preferably sodium and/or potassium) sulfates and chlorides and mixtures thereof, with sodium sulfate and/or sodium chloride being most preferred. Filler, when included, may be present in a total amount ranging from about 1 to about 80%, preferably from about 5 to about 50% (by weight based on the total weight of the composition).
- A laundry detergent composition for use in the invention may include one or more polymeric cleaning boosters such as antiredeposition polymers. Anti-redeposition polymers stabilise the soil in the wash solution thus preventing redeposition of the soil. A preferred material is ethoxylated polyethyleneimine, with an average degree of ethoxylation being from 10 to 30, preferably from 15 to 25 ethoxy groups per ethoxylated nitrogen atom in the polyethyleneimine backbone. Another type of suitable anti-redeposition polymer for use in the invention includes cellulose esters and ethers, for example sodium carboxymethyl cellulose.
- Mixtures of any of the above described materials may also be used.
- The overall level of anti-redeposition polymer, when included, may range from 0.05 to 6%, more preferably from 0.1 to 5% (by weight based on the total weight of the composition).
- A laundry detergent composition for use in the invention may in some cases contain one or more fatty acids and/or salts thereof. Preferred examples of such materials include saturated C12-18 fatty acids such as lauric acid, myristic acid, palmitic acid or stearic acid; and fatty acid mixtures in which 50 to 100% (by weight based on the total weight of the mixture) consists of saturated C12-18 fatty acids. Such mixtures may typically be derived from natural fats and/or optionally hydrogenated natural oils (such as coconut oil, palm kernel oil or tallow). The fatty acids may be present in the form of their sodium, potassium or ammonium salts and/or in the form of soluble salts of organic bases, such as mono-, di- or triethanolamine.
- Mixtures of any of the above described materials may also be used.
- Fatty acids and/or their salts, when included, may be present in an amount ranging from about 0.25 to 5%, more preferably from 0.5 to 5%, most preferably from 0.75 to 4% (by weight based on the total weight of the composition).
- For formula accounting purposes, in the formulation, fatty acids and/or their salts (as defined above) are not included in the level of surfactant or in the level of builder.
- A liquid laundry detergent composition for use in the invention may comprise one or more rheology modifiers. Examples of such materials include polymeric thickeners, such as hydrophobically modified alkali swellable emulsion (HASE) copolymers; and/or structurants which form a network within the composition, such as hydrogenated castor oil, microfibrous cellulose and citrus pulp fibre.
- A liquid laundry detergent composition for use in the invention preferably has a pH in the range of 5 to 9, more preferably 6 to 8, when measured on dilution of the composition to 1% (by weight based on the total weight of the composition) using demineralised water.
- A laundry detergent composition for use in the invention may contain further optional ingredients to enhance performance and/or consumer acceptability. Examples of such ingredients include fragrance, foam boosting agents, antioxidants, sunscreens, anticorrosion agents, colorants, pearlisers and/or opacifiers, and shading dye. Each of these ingredients will be present in an amount effective to accomplish its purpose. Generally, these optional ingredients are included individually at an amount of up to 5% (by weight based on the total weight of the composition).
- A laundry detergent composition of the invention for use in the invention generally contains no more than 0.2%, preferably no more than 0.1%, more preferably no more than 0.01% and most preferably 0% (by weight based on the total weight of the composition) of oxidising agents selected from halogen-based bleaches (e.g. alkali metal hypochlorites and alkali metal salts of di- and tri-chloro and di- and tri-bromo cyanuric acids), oxygen-based bleaches (e.g. sodium perborate (tetra-or monohydrate), sodium percarbonate and hydrogen peroxide) and mixtures thereof.
- A laundry detergent composition for use in the invention generally contains no more than 0.2% and preferably no more than 0.1% (by weight based on the total weight of the composition of biocides selected from quaternary ammonium salts (such as benzalkonium chloride, didecyldimethylammonium chloride, didecylmethylpolyoxyethyleneammonium propionate, didecylmethylammonium carbonate, or benzethonium chloride); imidazolium derivatives (such as 1,10-di(3-decyl-2-methylimidazolium)decane dichloride, 1,10-di(3-decyl-2-methylimidazolium)decane dibromide, 1,12-di(3-decyl-2-methylimidazolium)dodecane dichloride, 1,12-di(3-octyl-2-methylimidazolium)dodecane dichloride, or 1,10-di(3-decyl-2-methylimidazolium)decane dichloride); biguanide compounds (such as polyaminopropyl biganide (PHMB); guanidine compounds such as ethoxyethylguanidine chloride and polyaminopropyl guanidine hydrochloride(PHMG)); and bis(aminoalkyl)alkylamine compounds (such as bis(aminopropyl)dodecylamine) and mixtures thereof..
- A laundry detergent composition for use in the invention may be packaged as unit doses in polymeric film soluble in the wash water. Alternatively, the detergent composition of the invention may be supplied in multidose plastics packs with a top or bottom closure. A dosing measure may be supplied with the pack either as a part of the cap or as an integrated system.
- The laundry detergent composition as described above is used for the reduction of malodour on synthetic fabrics laundered therewith.
- A suitable laundering method for synthetic fabrics in the context of this invention comprises diluting a dose of the laundry detergent composition as described above to obtain a wash liquor, and soaking and/or agitating the fabrics with the wash liquor so formed in a laundry vessel, followed by rinsing the laundry in water. The duration of such a method is preferably in the range of from 10 minutes to 3 hours, more preferably from 10 minutes to 1 hour and most preferably from 15 to 45 minutes.
- In such a method, the total quantity of fabric relative to wash liquor generally ranges from about 8 to about 20g fabric per litre of wash liquor and preferably ranges from about 10 to about 15g fabric per litre of wash liquor.
- Preferably the fabrics are placed into the drum of an automatic washing machine, and a wash cycle is run.
- In automatic washing machines, the dose of laundry detergent composition is typically put into a dispenser and from there it is flushed into the machine by the water flowing into the machine, thereby forming the wash liquor. Dosages for a typical front-loading washing machine (using 10 to 15 litres of water to form the wash liquor) may range from about 10 ml to about 100 ml, preferably about 15 to 75 ml. Dosages for a typical top-loading washing machine (using from 40 to 60 litres of water to form the wash liquor) may be higher, e.g. 100 ml or more. Lower dosages of detergent (e.g. 50 ml or less) may be used for hand washing methods (using about 1 to 10 litres of water to form the wash liquor).
- An automatic washing machine for use in the invention may be any conventional automatic washing machine useful for the laundering of fabrics. Such automatic washing machines are those typically found in the home or in businesses such as self-service launderettes where individual consumers can launder their own loads of fabrics.
- Washing machines utilize a mechanical agitator to produce agitation of washing and rinsing solutions. Automatic washing machines are also fitted with means for controlling wash and rinse water temperatures and wash and rinse duration. Automatic washing machines can also provide the means for both forming and removing washing and rinsing solutions by using filling and draining apparatus and filling, draining and/or spin cycles
- An automatic washing machine for use in the method of the invention will generally comprise an external casing; a wash tub connected in floating manner to the casing by one or more suspension devices; a perforated laundry drum for housing laundry for washing, and which is mounted inside the wash tub to rotate about an axis of rotation; and a drive unit connected by a connecting member to the laundry drum to rotate it, on command, about the axis of rotation. A loading/unloading door ensures access to the drum. For domestic use, the drum capacity will generally range from about 2 up to about 10 kg, more typically up to about 6kg of dry cotton laundry.
- Automatic washing machines are usually classified into two major groups in terms of the structures and mechanisms; top-loading and front-loading. Top-loading machines have an upright or vertical drum into which fabrics to be laundered are placed. Fabrics are added into the drum, which is usually cylindrical, from the lidded top of the machine. Top-loading machines frequently have a moving agitator element placed along the axis of the drum. Rotation and vertical motion of the agitator serves to intensify the laundering action. Front-loading machines have a drum, also generally cylindrical, which is positioned with the drum axis sideways or in a horizontal position. Fabrics are added into the drum through a door on the front wall of the machine. Front-loading machines typically do not have an agitator element. Mechanical energy is instead imparted to the laundry by the tumbling action formed by the repeated lifting and dropping of the laundry which is implemented by the rotating drum. The drum may also incorporate lifting vanes or similar protrusions to lift the laundry. For domestic use, front-loading automatic washing machines are often preferred due to their superior water and energy efficiency.
- The term "wash cycle" in the context of this invention denotes a cycle of operation generally employed in automatic washing machines, in which the machine goes through a series of stages during which water is added, contacted with fabrics being laundered and then extracted from the washing machine drum by spinning. Awash cycle will typically consist of at least a wash stage, a rinse stage and a spin stage. The wash stage, the rinse stage and the spin stage may themselves consist of several steps, such as a fill step, a drain step, a pause step, an agitation step, and any combination thereof. A user may select one of several laundering options (programmes) based upon the type of laundry load being placed in the washing machine (e.g. cotton, wool, synthetic, delicate) and/or the temperature at which the washing must be performed (typically between 30 °C and 90 °C). A wash cycle may also involve one or more additional wash and/or spin and/or rinsing stages respectively, depending on the programme selected.
- A preferred type of wash cycle in the context of this invention would be a synthetics programme characterised by a wash temperature ranging from 20 to 40°C, from 1 to 3 rinses and a spin speed of less than 1000 rpm, such as from 500 to 800 rpm. The wash stage duration of a such a programme is usually from about 30 to 40 minutes with the wash cycle overall duration being from about 50 to 70 minutes.
- A subsequent aqueous rinse step and drying the laundry is preferred. Any input of water during any optional rinsing step(s) is not included when determining the volume of the wash liquor. Drying of synthetic fabrics (particularly polyester) is most preferably carried out by air or cool tumble drying. Generally, the fabrics will be dried to a residual moisture level of no more than about 5% (based on dry fabric weight), preferably from 0 to 2.5% (based on dry fabric weight).
- To measure efficiacy of a laundering method used in this invention, sensory and/or chemical and/or microbiological assessments of the treated fabrics may be carried out at various stages of the laundering process. For example, assessment may suitably be carried out after completion of the laundering process (e.g. up to 2 hours after drying). and/or after the dried fabric is stored without further treatment for a storage period of at least 24 hours, preferably at least 3 days and more preferably from 4 to 8 days. Fabric malodour developing after storage is a particular problem for performance garments which may often accumulate in laundry baskets or sports bags.
- A range of techniques are available to the skilled worker for the assessment of sensory, chemical and microbiological properties respectively. For example, malodour assessments may be carried out using trained panellists to determine hedonic value, intensity, and qualitative odour characteristics. Malodour causing substances may be quantitatively detected by using methods such as column chromatography. Microbial communities may be measured using plate count techniques involving the growth of colonies on a nutrient agar surface.
- The invention will now be further described with reference to the following non-limiting Examples.
- Expert odour assessors trained to quantify body odour (following a methodology described in
WO99/19452 - A panel of 32 women was divided into four groups of eight. Each was given a cotton T-shirt modified to accommodate knitted polyester swatches in the underarm region of the shirt. These swatches are 14 cm x 18cm and made from 100% knitted polyester (Phoenix Calico - polyester cross-tuck 144g/m2). Prior to first wear all the swatches are laundered in an unfragranced, bleach-containing detergent powder (SKIP™) at recommended dose (120gms) in a Zanussi™ front loading automatic washing machine at 60°C. None of the swatches are pre-washed in the products under evaluation. Each panellist has four swatches assigned to them. These are worn in rotation as pre-assigned.
- On any day, each panellist would wear two swatches; that in the left armpit having been washed in one product whilst that in the right armpit was washed in a separate product. Swatches were rotated in such a way that all panellists are exposed to swatches washed in all four products. In the current study, the process was continued out to four cycles. Laundered swatches were given to the panellists at a set time on the morning of each day of the test; they then wear them throughout the day and return the soiled swatches the following morning when they are reissued with a clean T-shirt and second pair of swatches.
- The fragrance-free liquid detergent formulations given in Table 1(a) were evaluated at recommended dose (35ml) in a Zanussi™ front loading automatic washing machine at 40°C, on a synthetics wash cycle in 26°FH water by washing the appropriately coded soil swatches in the corresponding formulation.
- Each wash load also comprised 1 kg of clean 100% cotton and 1kg of 100% polyester together with 3 sheets of an industry recognised simulated soil-ballast (SBL-2004 ex. Krefeld test institute). The swatches were tumbled dried on cool setting following laundering and then assessed approximately 2 hours after drying.
- Malodour intensity assessments were made on each of the soiled swatches and then again following washing and drying of swatches in the test products. Following the laundering, drying and odour assessment after the 4th cycle the swatches were stored (wrapped in aluminium foil) for 7 days prior to reassessment of any malodour that may have developed on storage. Results are given in Table 1(b).
- The effect of the SRP on fragrance delivery for the four formulations is shown in Table 1(c). These results were obtained using a commercial sample of SURF™, "Small and Mighty with essential oils", "Tropical" variant.
Table 1(a) Ingredient wt% (as active ingredient) Formulation A B 1 2 Na LAS 11 11 11 11 Na LES (3EO) 6 6 6 6 C12-15 7EO 17 17 17 17 Palm kernel soap 7 7 7 7 MPG 7 7 7 7 Glycerol 4 4 4 4 Sulfonated SRP 0 2 0 0 Nonionic SRP 0 0 2 0 Nonionic SRP 0 0 0 2 minors, water To 100% Table 1(b) Wash Wear Results - on polyester A B 1 2 % panel with malodour, averaged over cycles 1-4. 52 41 35 29 % panel with malodour, 7 days after cycle 4 70 63 55 50 Table 1(c) Fragrance intensity A B 1 2 Fragrance intensity (0-5 scale) 2 hours after drying 1.9 1.4 1.4 1.2 - These results show that the examples of the invention (1 and 2) show improved performance over the comparative examples (A and B). In the comparative examples using no SRP or anionic (sulfonated) SRP, over 60% of panellist swatches developed malodour during storage. In the examples of the invention, fewer developed malodour on storage.
- Table 1(c) shows that while any SRP reduces the intensity of perfume, the effect on perfume is comparable for the sulfonated and nonionic SRP whereas their performance as regards malodour development is different.
- This test used the methodology of Example 1, except that a build-up in malodour on the polyester was encouraged by simply washing all the swatches in water-only during cycles 1 and 2. This simulates both soil build up during repeated wash-wear and creates an increase in malodour levels similar to that which would be achieved by boosting the panel with a disproportionate number of individuals more prone to intense BO. The panellists then wore the swatches for a third occasion and following collection they were stored for two days to simulate clothes being left in a laundry basket. Following this storage period, the soiled swatches were assessed by the expert odour assessors and then laundered in the test products as described in example 1.
- In this study, the polyester used was Coolmax ™ a rapid-wicking textile frequently used in sportswear.
- The fragrance-free liquid detergent formulations given in Table 2 (a) were evaluated at recommended dose (35ml) in a Zanussi ™ front loading automatic (FLA) washing machines at 40°C, on a synthetics wash cycle in 26°FH water by washing the appropriately coded soil swatches in the corresponding formulation. Each wash load also comprised 1 kg of clean 100% cotton and 1kg of 100% polyester together with 3 sheets of an industry recognised simulated soil-ballast (SBL-2004 ex. Krefeld test institute). The swatches were tumbled dried on cool setting following laundering and then assessed approximately 2 hours after drying.
Table 2(a) Ingredient wt% (as active ingredient) Formulation C D 3 4 Na LAS 11 5.5 5.5 5.5 Na LES (3EO) 6 3 3 3 C12-15 7EO 17 8.5 8.5 8.5 Palm kernel soap 7 3.5 3.5 3.5 MPG 7 3.5 3.5 3.5 Glycerol 4 2 2 2 Nonionic SRP (PET-POET) 0 0 0.8 2 Minors, water To 100% - These results in Table 2 (b) show that the examples of the invention (3 and 4) show improved performance over the comparative examples (C and D), even at relatively low surfactant levels.
Table 2(b) Wash-Wear results C D 3 4 Proportion of panel assessed as having NO OR VERY LOW residual malodour on polyester after washing and drying averaged over four cycles. 20% 35% 95% 98% Proportion of panel assessed as having NO OR VERY LOW malodour on polyester 7 days after washing and drying following 4th wash cycle 42% 17% 39% 56% - This shows that when the nonionic SRPs are used according to the invention in a detergent composition for the laundering of synthetic fabrics, there is a reduction in perceivable fabric malodour after drying of the laundered fabrics, a reduction in the perception in the development of fabric malodour during storage of the laundered fabrics and a significant increase in the number of users who perceive no residual fabric malodour on the laundered fabrics.
Claims (6)
- The use of a nonionic soil release polymer (SRP) as an anti-malodour active for synthetic fabrics; the nonionic soil release polymer being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units.
- The use of a laundry detergent composition comprising:from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants, anda nonionic soil release polymer (SRP) being a copolymer of at least alkylene glycol and aromatic dicarboxylic acid monomer units;for the reduction of malodour on synthetic fabrics laundered therewith.
- Use according to claim 1 or 2 in which the alkylene glycol is selected from ethylene glycol and propylene glycol or a mixture thereof.
- Use according to any one of claims 1 to 3 in which the aromatic dicarboxylic acid is terephthalate.
- Use according to any one of claims 1 to 4, in which fabric malodour developing after a storage period is reduced.
- Use according to claim 5, in which the storage period ranges from 24 hours to 8 days.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999019452A1 (en) | 1997-10-10 | 1999-04-22 | Unilever Plc | Laundry treatment products for spandex® containing fabrics |
WO2007059532A1 (en) * | 2005-11-17 | 2007-05-24 | Colgate-Palmolive Company | Malodor reducing compositions and methods |
WO2014087011A1 (en) * | 2012-12-07 | 2014-06-12 | Novozymes A/S | Preventing adhesion of bacteria |
-
2018
- 2018-11-09 EP EP18205467.6A patent/EP3650522A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999019452A1 (en) | 1997-10-10 | 1999-04-22 | Unilever Plc | Laundry treatment products for spandex® containing fabrics |
WO2007059532A1 (en) * | 2005-11-17 | 2007-05-24 | Colgate-Palmolive Company | Malodor reducing compositions and methods |
WO2014087011A1 (en) * | 2012-12-07 | 2014-06-12 | Novozymes A/S | Preventing adhesion of bacteria |
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