EP3921402A1 - Improvements relating to fabric cleaning - Google Patents
Improvements relating to fabric cleaningInfo
- Publication number
- EP3921402A1 EP3921402A1 EP20701792.2A EP20701792A EP3921402A1 EP 3921402 A1 EP3921402 A1 EP 3921402A1 EP 20701792 A EP20701792 A EP 20701792A EP 3921402 A1 EP3921402 A1 EP 3921402A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- weight
- weight based
- total weight
- anionic surfactants
- 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.)
- Pending
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 29
- 238000004140 cleaning Methods 0.000 title claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 168
- -1 alkylbenzene sulfonates Chemical class 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 229920000642 polymer Polymers 0.000 claims abstract description 24
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 23
- 239000003599 detergent Substances 0.000 claims abstract description 22
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 17
- 244000005700 microbiome Species 0.000 claims abstract description 16
- 239000003352 sequestering agent Substances 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 9
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims abstract description 8
- 229910001428 transition metal ion Inorganic materials 0.000 claims abstract description 7
- 241000191940 Staphylococcus Species 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 16
- 229920002873 Polyethylenimine Polymers 0.000 claims description 13
- 238000007046 ethoxylation reaction Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
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- 239000000463 material Substances 0.000 description 25
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- 239000003139 biocide Substances 0.000 description 4
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- 238000011068 loading method Methods 0.000 description 4
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- 102000004882 Lipase Human genes 0.000 description 3
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- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 3
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- 238000012644 addition polymerization Methods 0.000 description 3
- 239000003093 cationic surfactant Substances 0.000 description 3
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 229920005646 polycarboxylate Polymers 0.000 description 3
- 159000000001 potassium salts Chemical class 0.000 description 3
- 229960004063 propylene glycol Drugs 0.000 description 3
- 235000013772 propylene glycol Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- 108091003079 Bovine Serum Albumin Proteins 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
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- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
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- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 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
- 229920000578 graft copolymer Polymers 0.000 description 1
- 239000005431 greenhouse gas 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
- 239000008233 hard water Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003752 hydrotrope Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229920013821 hydroxy alkyl cellulose Polymers 0.000 description 1
- 150000004693 imidazolium salts Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 229920001427 mPEG Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- 239000007777 multifunctional material Substances 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
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 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
- 235000019198 oils Nutrition 0.000 description 1
- 238000006384 oligomerization reaction Methods 0.000 description 1
- 239000003605 opacifier Substances 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003346 palm kernel oil Substances 0.000 description 1
- 235000019865 palm kernel oil Nutrition 0.000 description 1
- 108010087558 pectate lyase Proteins 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229940093424 polyaminopropyl biguanide Drugs 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 229920001444 polymaleic acid Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical class [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 235000011082 potassium citrates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- AVTYONGGKAJVTE-UHFFFAOYSA-L potassium tartrate Chemical class [K+].[K+].[O-]C(=O)C(O)C(O)C([O-])=O AVTYONGGKAJVTE-UHFFFAOYSA-L 0.000 description 1
- 239000001472 potassium tartrate Substances 0.000 description 1
- 235000011005 potassium tartrates Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- ROSDSFDQCJNGOL-UHFFFAOYSA-N protonated dimethyl amine Natural products CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013207 serial dilution Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 210000004927 skin cell Anatomy 0.000 description 1
- 244000005714 skin microbiome Species 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 229960001922 sodium perborate Drugs 0.000 description 1
- 229940045872 sodium percarbonate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical group 0.000 description 1
- 229910000031 sodium sesquicarbonate Inorganic materials 0.000 description 1
- 235000018341 sodium sesquicarbonate Nutrition 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
- 235000019794 sodium silicate Nutrition 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 235000011004 sodium tartrates 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
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000475 sunscreen effect Effects 0.000 description 1
- 239000000516 sunscreening agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- JZBRFIUYUGTUGG-UHFFFAOYSA-J tetrapotassium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical class [K+].[K+].[K+].[K+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O JZBRFIUYUGTUGG-UHFFFAOYSA-J 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- ZKWDCFPLNQTHSH-UHFFFAOYSA-N tribromoisocyanuric acid Chemical class BrN1C(=O)N(Br)C(=O)N(Br)C1=O ZKWDCFPLNQTHSH-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- JEVFKQIDHQGBFB-UHFFFAOYSA-K tripotassium;2-[bis(carboxylatomethyl)amino]acetate Chemical class [K+].[K+].[K+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O JEVFKQIDHQGBFB-UHFFFAOYSA-K 0.000 description 1
- WCTAGTRAWPDFQO-UHFFFAOYSA-K trisodium;hydrogen carbonate;carbonate Chemical compound [Na+].[Na+].[Na+].OC([O-])=O.[O-]C([O-])=O WCTAGTRAWPDFQO-UHFFFAOYSA-K 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003260 vortexing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000010457 zeolite 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
- C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with anionic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- 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
- C11D3/16—Organic compounds
- C11D3/36—Organic compounds containing phosphorus
- C11D3/361—Phosphonates, phosphinates or phosphonites
-
- 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
- C11D3/36—Organic compounds containing phosphorus
- C11D3/364—Organic compounds containing phosphorus containing nitrogen
-
- 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
- C11D3/3715—Polyesters or polycarbonates
-
- 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
- C11D3/3723—Polyamines or polyalkyleneimines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
- C11D1/146—Sulfuric acid esters
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
- C11D1/721—End blocked ethers
Definitions
- the present invention is concerned with improvements relating to fabric cleaning, and with an improved process for removing microorganisms from fabrics using a liquid laundry detergent.
- US2015/0322387A1 describes an anti-microbial cleaning composition, comprising by weight of the composition, from 0.001% to 3% of a nonionic anti-microbial agent, and from 0.1% to 3% of a soil dispersant.
- US2017/0191005A1 describes an aqueous liquid laundry formulation comprising an ester based laundry ingredient; an effective cleaning amount of protease enzyme; an effective cleaning amount of lipase enzyme; and from 5 to 60wt% surfactant; wherein at least 70wt% of the effective cleaning amount of lipase enzyme is encapsulated and separated from the ester based laundry ingredient and the liquid by a coating which is insoluble in the formulation but which dissolves on dilution with the wash; and wherein the laundry formulation comprises at least 20wt% water.
- WO2009153184 describes such an approach, where the preferred formulations have high amounts of soil release polymer and antiredeposition polymer relative to the total detersive surfactants level.
- the present invention addresses this problem.
- the present invention provides a liquid laundry detergent composition for improved removal of microorganisms from fabrics, the composition comprising: a) from 5 to 11.5% (by weight based on the total weight of the composition) of
- anionic surfactants selected from linear alkylbenzene sulfonates and mixtures thereof with alkyl ether sulfate;
- d) from 0.25 to 2% of transition metal ion sequestrants; in which the total amount of anionic surfactants (a) + nonionic surfactants (b) ranges from 8 to 15% (by weight based on the total weight of the composition); and in which the weight ratio of anionic surfactants (a) to nonionic surfactants (b) ranges from 3:1 to 12:1.
- the invention also provides a method of removing microorganisms from fabric which comprises the steps of: i) providing a dose of the liquid laundry detergent composition described above, ii) diluting the dose in water to obtain a wash liquor which comprises from 0.035 to 0.8g/l of the anionic surfactants (a),
- the invention further provides use of a liquid laundry composition according to the present invention for removal of microorganisms from fabrics.
- laundry detergent in the context of this invention denotes formulated compositions intended for and capable of wetting and cleaning fabrics such as clothing, linens and other household textiles.
- the term“linen” is often used to describe certain types of laundry items including bed sheets, pillow cases, towels, tablecloths, table napkins and uniforms.
- Textiles can include woven fabrics, non-woven fabrics, and knitted fabrics; and can include natural or synthetic fibres such as silk fibres, linen fibres, cotton fibres, polyester fibres, polyamide fibres such as nylon, acrylic fibres, acetate fibres, and blends thereof including cotton and polyester blends.
- liquid laundry detergents include heavy-duty liquid laundry detergents for use in the wash cycle of automatic washing machines, as well as liquid fine wash and liquid colour care detergents such as those suitable for washing delicate garments (e.g. those made of silk or wool) either by hand or in the wash cycle of automatic washing machines.
- liquid laundry detergents include heavy-duty liquid laundry detergents for use in the wash cycle of automatic washing machines, as well as liquid fine wash and liquid colour care detergents such as those suitable for washing delicate garments (e.g. those made of silk or wool) either by hand or in the wash cycle of automatic washing machines.
- liquid in the context of this invention denotes that a continuous phase or predominant part of the composition is liquid, and that the composition is flowable at 15°C and above. Accordingly, the term“liquid” may encompass emulsions, suspensions, and compositions having flowable yet stiffer consistency, known as gels or pastes.
- the viscosity of the composition may suitably range from about 200 to about 10,000 mPa.s at 25°C at a shear rate of 21 sec 1 . This shear rate is the shear rate that is usually exerted on the liquid when poured from a bottle.
- Pourable liquid detergent compositions generally have a viscosity of from 200 to 2,500 mPa.s, preferably from 200 to 1500 mPa.s.
- Liquid detergent compositions which are pourable gels generally have a viscosity of from 1 ,500 mPa.s to 6,000 mPa.s, preferably from 1 ,500 mPa.s to 2,000 mPa.s.
- a composition of 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 non-aqueous carriers such as hydrotropes, co-solvents and phase stabilizers.
- non-aqueous carriers such as hydrotropes, co-solvents and phase stabilizers.
- Such materials are typically low molecular weight, water-soluble or water-miscible organic liquids such as C1 to C5 monohydric alcohols (such as ethanol and n- or i-propanol); C2 to C6 diols (such as monopropylene glycol and dipropylene glycol); C3 to C9 triols (such as glycerol);
- polyethylene glycols having a weight average molecular weight (M w ) ranging from about 200 to 600; C1 to C3 alkanolamines such as mono-, di- and triethanolamines; and alkyl aryl sulfonates having up to 3 carbon atoms in the lower alkyl group (such as the sodium and potassium xylene, toluene, ethylbenzene and isopropyl benzene (cumene) sulfonates). Mixtures of any of the above described materials may also be used.
- M w weight average molecular weight
- Non-aqueous carriers when included, may be present in an amount ranging from 0.1 to 20%, preferably from 1 to 15%, and more preferably from 3 to 12% (by weight based on the total weight of the composition).
- the composition of the invention preferably has a pH in the range of 5 to 9, more preferably 7 to 8, when measured on dilution of the composition to 1 % using
- composition of the invention comprises from 5 to 11.5% (by weight based on the total weight of the composition) of anionic surfactants (a) selected from linear
- Linear alkylbenzene sulfonates for use in the invention generally contain from about 10 to about 18 carbon atoms in the linear alkyl chain.
- Commercial LAS is a mixture of closely related isomers and alkyl chain homologues, each containing an aromatic ring sulfonated at the“para" position and attached to a linear alkyl chain at any position except the terminal carbons.
- the linear alkyl chain typically has a chain length of from 11 to 15 carbon atoms, with the predominant materials having a chain length of from 12 to 14 carbon atoms.
- Each alkyl chain homologue consists of a mixture of all the possible sulfophenyl isomers. except for the 1 -phenyl isomer.
- LAS is produced as a salt by neutralizing it with a suitable counterion, which is typically selected from alkali metals such as sodium and potassium (preferably sodium); or ammoniacal counterions such as ammonium, monoethanolamine (MEA) and triethanolamine (TEA). Mixtures of such counterions may also be employed.
- LAS may be formulated into compositions in acid (i.e. HLAS) form and then at least partially neutralized in-situ.
- Alkyl ether sulfates (AES) for use in the invention generally contain a straight or branched chain alkyl group having 10 to 16 carbon atoms.
- Preferred types of AES have a structure corresponding to general formula (I):
- M is preferably sodium, potassium, ammonium or ethanolamine
- R is preferably a linear alkyl group having from 12 to 14 carbon atoms, and the average degree of ethoxylation n preferably ranges from 2.5 to 3.5.
- AES generally contain a mixture of homologues and the degree of ethoxylation is a statistical average value which may be an integer or a fraction.
- the value of n in general formula (I) is governed by the starting molar ratio of ethylene oxide to aliphatic alcohol in the ethoxylation reaction and the temperature, time and catalytic conditions under which the ethoxylation reaction takes place.
- a commercially produced AES having general formula (I) will usually comprise a mixture of homologues in which from 55 to 80 mol% of the total mixture is made up of homologues with ethoxy chains of 5EO or less (down to OEO, i.e. unethoxylated alkyl sulfate), with the remainder of the mixture made up of homologues with ethoxy chains of 6EO or more (up to about 10EO).
- Higher homologues e.g. up to about 15EO
- a preferred mixture of anionic surfactants (a) for use in the invention contains:
- the weight ratio of (ai):(aii) in the mixture preferably ranges from 8:1 to 1 :1 , more preferably from 4:1 to 2:1.
- the total amount of anionic surfactants (a) in a composition of the invention preferably ranges from 8 to 11.5% (by weight based on the total weight of the composition).
- composition of the invention comprises from 1 to 5% (by weight based on the total weight of the composition) of nonionic surfactants (b) selected from aliphatic alcohol ethoxylates.
- Aliphatic alcohol ethoxylates for use in the invention may suitably be selected from Cs to Ci 8 primary or secondary linear or branched alcohol ethoxylates with an average of from 2 to 40 moles of ethylene oxide per mole of alcohol.
- Preferred aliphatic alcohol ethoxylates for use in the invention may be selected from C12 to Ci5 primary linear alcohol ethoxylates with an average of from 3 to 20, more preferably from 5 to 10, most preferably 7 to 9 moles of ethylene oxide per mole of alcohol.
- the total amount of nonionic surfactants (b) in a composition of the invention preferably ranges from 1 to 3% (by weight based on the total weight of the composition).
- the weight ratio of anionic surfactants (a) to nonionic surfactants (b) in a composition of the invention preferably ranges rom 3:1 to 10:1 , more preferably from 3.5:1 to 9.5:1.
- the total amount of anionic surfactants (a) + nonionic surfactants (b) in a composition of the invention preferably ranges from 9 to 14%, more preferably from 10 to 13% (by weight based on the total weight of the composition).
- a particularly preferred composition of the invention comprises, as the anionic surfactants (a) and nonionic surfactants (b):
- composition of the invention comprises from 2.75 to 15% (by weight based on the total weight of the composition) of polymeric cleaning boosters (c) selected from soil release polymers and mixtures thereof with antiredeposition polymers.
- polymeric cleaning boosters can aid the removal of microorganisms from fabrics.
- SRPs help to improve the detachment of soils from fabric by modifying the fabric surface during washing.
- the adsorption of a SRP over the fabric surface is promoted by an affinity between the chemical structure of the SRP and the target fibre.
- SRPs for use in the invention may include a variety of charged (e.g. anionic) as well as non-charged monomer units and structures may be linear, branched or star-shaped.
- the SRP structure may also include capping groups to control molecular weight or to alter polymer properties such as surface activity.
- 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.
- SRPs for use in the invention may suitably be selected from copolyesters of dicarboxylic acids (for example adipic acid, phthalic acid or terephthalic acid) with diols (for example ethylene glycol or propylene glycol) and polydiols (for example polyethylene glycol or polypropylene glycol).
- the copolyester may also include monomeric units substituted with anionic groups, such as for example sulfonated isophthaloyl units.
- oligomeric esters produced by transesterification/oligomerization of poly(ethyleneglycol) methyl ether, dimethyl terephthalate (“DMT”), propylene glycol (“PG”) and poly(ethyleneglycol) (“PEG”); partly- and fully-anionic-end-capped oligomeric esters such as oligomers from ethylene glycol (“EG”), PG, DMT and Na-3,6-dioxa-8- hydroxyoctanesulfonate; nonionic-capped block polyester oligomeric compounds such as those produced from DMT, Me-capped PEG and EG and/or PG, or a combination of DMT, EG and/or PG, Me-capped PEG and Na-dimethyl-5-sulfoisophthalate, and copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate.
- DMT dimethyl terephthalate
- PG propylene
- cellulosic derivatives such as hydroxyether cellulosic polymers, Ci-C 4 alkylcelluloses and C 4 hydroxyalkyl celluloses
- Preferred 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):
- R 1 and R 2 independently of one another are X-(OC 2 H 4 ) n -(OC 3 H 6 ) m ;
- X is C1 -4 alkyl and preferably methyl
- n is a number from 12 to 120, preferably from 40 to 50;
- n is a number from 1 to 10, preferably from 1 to 7;
- a is a number from 4 to 9.
- n, n and a are not necessarily whole numbers for the polymer in bulk.
- the total amount of SRP in a composition of the invention preferably ranges from 0.2 to 2%, more preferably from 0.4 to 1% (by weight based on the total weight of the composition) of one or more SRPs
- Anti-redeposition polymers stabilise the soil in the wash solution thus preventing redeposition of the soil.
- Suitable anti-redeposition polymers for use in the invention include alkoxylated polyethyleneimines.
- Polyethyleneimines are materials composed of ethylene imine units -CH2CH2NH- and, where branched, the hydrogen on the nitrogen is replaced by another chain of ethylene imine units.
- Preferred alkoxylated polyethyleneimines are materials composed of ethylene imine units -CH2CH2NH- and, where branched, the hydrogen on the nitrogen is replaced by another chain of ethylene imine units.
- polyethylenimines for use in the invention have a polyethyleneimine backbone of about 300 to about 10000 weight average molecular weight (M w ).
- the polyethyleneimine backbone may be linear or branched. It may be branched to the extent that it is a dendrimer.
- the alkoxylation may typically be ethoxylation or propoxylation, or a mixture of both. Where a nitrogen atom is alkoxylated, a preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25 alkoxy groups per modification.
- 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
- the total amount of anti-redeposition polymer in a composition of the invention preferably ranges from 2.1 to 5%, more preferably from 2.2 to 3% (by weight based on the total weight of the composition).
- a composition of the invention preferably comprises, as the polymeric cleaning boosters (c), a mixture of SRP (as further described above) and antiredeposition polymer (as further described above).
- a particularly preferred composition of the invention comprises, as the polymeric cleaning boosters (c):
- polyethyleneimines with a polyethyleneimine backbone of 300 to 10000 weight average molecular weight (M w ).and an average degree of ethoxylation of from 15 to 25 ethoxy groups per ethoxylated nitrogen atom in the polyethyleneimine backbone.
- the total amount of polymeric cleaning boosters (c) in a composition of the invention preferably ranges from 2.9 to 5%, more preferably from 3 to 4% and most preferably from greater than 3% to 3.5% (by weight based on the total weight of the composition).
- the composition of the invention comprises from 0.25 to 2% of transition metal ion sequestrants (d).
- the sequestrants (d) may help to improve the stability or cleaning performance of the composition, primarily by coordinating (i.e. binding) those transition metal ions which might otherwise interfere with these aspects.
- transition metal ions which are commonly found in wash water include divalent and trivalent transition metal ions such as ferrous, ferric, manganese and copper ions.
- Suitable sequestrants (d) include phosphonates, in acid and/or salt form. When utilized in salt form, alkali metal (e.g. sodium and potassium) or alkanolammonium salts are preferred. Specific examples of such materials include aminotris(methylene phosphonic acid) (ATMP), 1-hydroxyethylidene diphosphonic acid (HEDP) and diethylenetriamine penta(methylene phosphonic acid (DTPMP) and their respective sodium or potassium salts. HEDP and DTPMP are preferred. Mixtures of any of the above described materials may also be used.
- the total amount of sequestrants (d) in a composition of the invention preferably ranges from 0.3 to 0.9%, more preferably from 0.5 to 0.7% (by weight based on the total weight of the composition).
- composition of the invention may contain further optional ingredients to enhance performance and/or consumer acceptability, as follows:
- a composition of the invention may contain one or more builders. Builders enhance or maintain the cleaning efficiency of the composition, primarily by controlling water hardness (calcium and magnesium) ions.
- Builders for use in the invention can be of the organic or inorganic type, or a mixture thereof.
- Suitable inorganic builders include hydroxides, carbonates, sesquicarbonates, bicarbonates, silicates, zeolites, and mixtures thereof. Specific examples of such materials include sodium and potassium hydroxide, sodium and potassium carbonate, sodium and potassium bicarbonate, sodium sesquicarbonate, sodium silicate and mixtures thereof.
- Suitable organic builders include polycarboxylates, in acid and/or salt form.
- alkali metal e.g. sodium and potassium
- alkanolammonium salts are preferred.
- Specific examples of such materials include sodium and potassium citrates, sodium and potassium tartrates, the sodium and potassium salts of tartaric acid monosuccinate, the sodium and potassium salts of tartaric acid disuccinate, sodium and potassium ethylenediaminetetraacetates, sodium and potassium N(2-hydroxyethyl)- ethylenediamine triacetates, sodium and potassium nitrilotriacetates and sodium and potassium N-(2-hydroxyethyl)-nitrilodiacetates.
- Polymeric polycarboxylates may also be used, such as polymers of unsaturated monocarboxylic acids (e.g. acrylic, methacrylic, vinylacetic, and crotonic acids) and/or unsaturated dicarboxylic acids (e.g. maleic, fumaric, itaconic, mesaconic and citraconic acids and their anhydrides).
- unsaturated monocarboxylic acids e.g. acrylic, methacrylic, vinylacetic, and crotonic acids
- unsaturated dicarboxylic acids e.g. maleic, fumaric, itaconic, mesaconic and citraconic acids and their anhydrides
- Specific examples of such materials include polyacrylic acid, polymaleic acid, and copolymers of acrylic and maleic acid.
- the polymers may be in acid, salt or partially neutralised form and may suitably have a molecular weight (Mw) ranging from about 1 ,000 to 100,000, preferably from about 2,000 to about 85,000,
- Preferred builders for use in the invention may be selected from polycarboxylates (e.g. citrates) in acid and/or salt form (preferably in sodium salt form) and mixtures thereof.
- Builder when included, may be present in an amount ranging from about 0.1 to about 1 %, (by weight based on the total weight of the composition).
- a composition of the invention may contain one or more cosurfactants (such as amphoteric (zwitterionic) and/or cationic surfactants) in addition to the anionic surfactants (a) and nonionic surfactants (b) described above.
- cosurfactants such as amphoteric (zwitterionic) and/or cationic surfactants
- Specific cationic surfactants include Csto Cis alkyl dimethyl ammonium halides and derivatives thereof in which one or two hydroxyethyl groups replace one or two of the methyl groups, and mixtures thereof.
- Cationic surfactant when included, may be present in an amount ranging from about 0.1 to about 5% (by weight based on the total weight of the composition).
- amphoteric (zwitterionic) surfactants include alkyl amine oxides, alkyl betaines, alkyl amidopropyl betaines, alkyl sulphobetaines (sultaines), alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates, alkyl amphopropionates, alkylamphoglycinates, alkyl amidopropyl hydroxysultaines, acyl taurates and acyl glutamates, 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.
- Amphoteric (zwitterionic) surfactant, when included, may be present in an amount ranging from about 0.1 to about 5% (by weight based on the total weight of the composition).
- a composition of the invention may in some cases contain one or more fatty acids and/or salts thereof.
- Suitable fatty acids in the context of this invention include aliphatic carboxylic acids of formula RCOOH, where R is a linear or branched alkyl or alkenyl chain containing from 6 to 24, more preferably 10 to 22, most preferably from 12 to 18 carbon atoms and 0 or 1 double bond.
- R is a linear or branched alkyl or alkenyl chain containing from 6 to 24, more preferably 10 to 22, most preferably from 12 to 18 carbon atoms and 0 or 1 double bond.
- saturated C12-18 fatty acids such as lauric acid, myristic acid, palmitic acid or stearic acid
- 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).
- a composition of the invention may comprise one or more rheology modifiers.
- examples of such materials include polymeric thickeners and/or structurants such as
- HASE copolymers for use in the invention include linear or crosslinked copolymers that are prepared by the addition polymerization of a monomer mixture including at least one acidic vinyl monomer, such as (meth)acrylic acid (i.e. methacrylic acid and/or acrylic acid); and at least one associative monomer.
- acidic vinyl monomer such as (meth)acrylic acid (i.e. methacrylic acid and/or acrylic acid); and at least one associative monomer.
- associative monomer in the context of this invention denotes a monomer having an ethylenically unsaturated section (for addition polymerization with the other monomers in the mixture) and a hydrophobic section.
- a preferred type of associative monomer includes a polyoxyalkylene section between the ethylenically unsaturated section and the hydrophobic section.
- Preferred HASE copolymers for use in the invention include linear or crosslinked copolymers that are prepared by the addition polymerization of (meth)acrylic acid with (i) at least one associative monomer selected from linear or branched C8-C40 alkyl (preferably linear C12- C22 alkyl) polyethoxylated (meth)acrylates; and (ii) at least one further monomer selected from C1 -C4 alkyl (meth) acrylates, polyacidic vinyl monomers (such as maleic acid, maleic anhydride and/or salts thereof) and mixtures thereof.
- the polyethoxylated portion of the associative monomer (i) generally comprises about 5 to about 100, preferably about 10 to about 80, and more preferably about 15 to about 60 oxyethylene repeating units.
- a composition of the invention will preferably comprise from 0.1 to 5% (by weight based on the total weight of the composition) of one or more polymeric thickeners such as, for example, the HASE copolymers which are described above.
- compositions of the invention may also have their rheology modified by use of one or more external structurants which form a structuring network within the composition.
- external structurants include hydrogenated castor oil, microfibrous cellulose and citrus pulp fibre.
- the presence of an external structurant may provide shear thinning rheology and may also enable materials such as encapsulates and visual cues to be suspended stably in the liquid. Enzymes
- a composition of the invention may comprise an effective amount of one or more enzyme selected from the group comprising, pectate lyase, protease, amylase, cellulase, lipase, mannanase and mixtures thereof.
- the enzymes are preferably present with
- a composition of the invention may contain further optional ingredients to enhance performance and/or consumer acceptability.
- additional optional ingredients include foam boosting agents, preservatives (e.g. bactericides), polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, ironing aids, colorants, pearlisers and/or opacifiers, and shading dye.
- foam boosting agents e.g. bactericides
- preservatives e.g. bactericides
- polyelectrolytes e.g. bactericides
- anti-shrinking agents e.g. bactericides
- anti-wrinkle agents e.g. bactericides
- anti-oxidants e.g. s, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, ironing aids, colorants, pearlisers and/or opacifiers, and shading dye.
- a composition of 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 composition of 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,
- 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 biguanide (PHMB); guanidine compounds such as ethyl biguanide (PHMB); guanidine compounds such as ethyl biguanide (PHMB); guanidine compounds such as ethyl biguanide (PHMB); guan
- a composition of the invention may also contain less than 0.001 % and preferably 0% (by weight based on the total weight of the composition) of a nonionic biocide.
- Said biocide is preferably a diphenyl ether, more preferably a hydroxyl diphenyl ether.
- the method of removing microorganisms from fabric according to the invention comprises the steps of: i) providing a dose of the liquid laundry detergent composition described above, ii) diluting the dose in water to obtain a wash liquor which comprises from 0.035 to 0.8g/l of the anionic surfactants (a),
- microorganisms are Staphylococcus species (such as S. aureus, S.
- the dose of liquid laundry detergent composition may be provided by packaging the composition as unit doses in polymeric film soluble in the wash water.
- the composition 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 method may suitably be carried out in a top-loading or front-loading automatic washing machine or can be carried out by hand.
- automatic washing machines the dose of 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 may range from about 10 ml to about 60 ml, preferably about 15 to 40 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. up to about 100 ml. Lower dosages of composition (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).
- the wash liquor comprises from 0.25 to 0.55 g/l of the anionic surfactants (a).
- 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.
- the laundry drying step can take place either in an automatic dryer or in the open air.
- Examples according to the invention are indicated by a number; and comparative examples (not according to the invention) are indicated by a letter.
- Liquid laundry detergent formulations were prepared by sequential mixing of the ingredients as shown in Table 1. Table 1
- the detergents were assessed for their efficacy at removing typical human skin bacteria from inoculated textiles.
- test carriers Method Knitted cotton and polyester test fabrics were hygiene washed twice on a cotton 60°C cycle using an ECE reference powder, dried and cut into 1 cm 2 pieces (test carriers).
- the sterilised, dried test carriers were inoculated with Staphyloccous aureus ATCC 6538, (a typical example of a skin colonising bacterial species).
- Bovine serum albumin (BSA) was used as a model interfering substance and was added to the bacterial inoculum at 0.3%.
- Polycotton (50:50) ballast fabric was cut into pieces of approx.6 x 8 cm 2 , sterilised and dried.
- the formulations of Table 1 were used to wash the inoculated test carriers in a model wash system according to typical front loader washing conditions (5.5g/L test formulation in 9L of 25° French Hard water at 30°C for 66 minutes followed by 2 rinses).
- Sufficient ballast fabric was used to provide a representative main wash load (5L test wash liquor to 1 kg fabric).
- a 4 log reduction of the bacterial population compared to a water control is considered a pass.
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PCT/EP2020/052274 WO2020160996A1 (en) | 2019-02-04 | 2020-01-30 | Improvements relating to fabric cleaning |
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