EP2292725B1 - Procédé de nettoyage de tissus à basse température - Google Patents

Procédé de nettoyage de tissus à basse température Download PDF

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Publication number
EP2292725B1
EP2292725B1 EP09010447.2A EP09010447A EP2292725B1 EP 2292725 B1 EP2292725 B1 EP 2292725B1 EP 09010447 A EP09010447 A EP 09010447A EP 2292725 B1 EP2292725 B1 EP 2292725B1
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EP
European Patent Office
Prior art keywords
detergent composition
laundry detergent
alkyl
bleach
acid
Prior art date
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EP09010447.2A
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German (de)
English (en)
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EP2292725B9 (fr
EP2292725A1 (fr
EP2292725B2 (fr
Inventor
Philp Frank Souter
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Procter and Gamble Co
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Procter and Gamble Co
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Priority to ES09010447T priority Critical patent/ES2581916T5/es
Priority to PL09010447.2T priority patent/PL2292725T5/pl
Priority to EP09010447.2A priority patent/EP2292725B2/fr
Priority to HUE09010447A priority patent/HUE029942T2/en
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to PCT/US2010/043366 priority patent/WO2011025615A2/fr
Priority to ARP100102963A priority patent/AR077863A1/es
Publication of EP2292725A1 publication Critical patent/EP2292725A1/fr
Priority to US13/371,777 priority patent/US8586521B2/en
Publication of EP2292725B1 publication Critical patent/EP2292725B1/fr
Publication of EP2292725B9 publication Critical patent/EP2292725B9/fr
Publication of EP2292725B2 publication Critical patent/EP2292725B2/fr
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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
    • 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
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/168—Organometallic compounds or orgometallic complexes
    • 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
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/349—Organic compounds containing sulfur additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • 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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3905—Bleach activators or bleach catalysts
    • C11D3/3907—Organic compounds
    • C11D3/3917—Nitrogen-containing compounds
    • C11D3/3927—Quarternary ammonium 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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3905—Bleach activators or bleach catalysts
    • C11D3/3932—Inorganic compounds or complexes
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile

Definitions

  • the present invention relates to a method of laundering fabric.
  • the method exhibits good fabric cleaning performance, good fabric care profile, good fabric freshness profile, and has an excellent environmental profile.
  • the inventors have found that certain detergent ingredients, and certain combinations of detergent ingredients enable low temperature laundering of fabric in a more environmentally friendly and sustainable manner, whilst ensuring good fabric cleaning performance, good fabric care profile, and good fabric freshness profile.
  • the present invention relates to a method of laundering fabric as defined by the claims.
  • the method of laundering fabric comprises the step of contacting a laundry detergent composition to water to form a wash liquor, and laundering fabric in said wash liquor, wherein the wash liquor has a temperature of above 0°C to 20°C, preferably to 19 °C, or to 18 °C, or to 17 °C, or to 16°C,or to 15 °C, or to 14 °C, or to 13 °C, or to 12 °C, or to 11 °C, or to 10 °C, or to 9°C, or to 8°C, or to 7°C, or to 6°C, or even to 5°C.
  • the fabric may be contacted to the water prior to, or after, or simultaneous with, contacting the laundry detergent composition with water.
  • the wash liquor is formed by contacting the laundry detergent to water in such an amount so that the concentration of laundry detergent composition in the wash liquor is from above 0g/l to 5g/l, preferably from 1g/l, and preferably to 4.5g/l, or to 4.0g/l, or to 3.5g/l, or to 3.0g/l, or to 2.5g/l, or even to 2.0g/l, or even to 1.5g/l.
  • the method of laundering fabric is carried out in a front-loading automatic washing machine.
  • the wash liquor formed and concentration of laundry detergent composition in the wash liquor is that of the main wash cycle. Any input of water during any optional rinsing step(s) that typically occurs when laundering fabric using a front-loading automatic washing machine is not included when determining the volume of the wash liquor.
  • any suitable automatic washing machine may be used, although it is extremely highly preferred that a front-loading automatic washing machine is used.
  • the wash liquor comprises 40 litres or less of water, preferably 35 litres or less, preferably 30 litres or less, preferably 25 litres or less, preferably 20 litres or less, preferably 15 litres or less, preferably 12 litres or less, preferably 10 litres or less, preferably 8 litres or less, or even 6 litres or less of water.
  • the wash liquor comprises from above 0 to 15 litres, or from 1 litre, or from 2 litres, or from 3 litres, and preferably to 12 litres, or to 10 litres, or even to 8 litres of water.
  • the wash liquor comprises from 1 litre, or from 2 litres, or from 3 litres, or from 4 litres, or even from 5 litres of water.
  • the laundry detergent composition is contacted to from above 0 litres, preferably from above 1 litre, and preferably to 70 litres or less of water to form the wash liquor, or preferably to 40 litres or less of water, or preferably to 35 litres or less, or preferably to 30 litres or less, or preferably to 25 litres or less, or preferably to 20 litres or less, or preferably to 15 litres or less, or preferably to 12 litres or less, or preferably to 10 litres or less, or preferably to 8 litres or less, or even to 6 litres or less of water to form the wash liquor.
  • catalytic ingredients are used to improve the cleaning performance of the laundry detergent composition during the process of the present invention.
  • Catalytic ingredients are also preferably used to improve the hygiene profile of the laundry detergent composition during the method of the present invention.
  • the laundry detergent composition comprises and wherein the laundry detergent composition comprises greater than 1wt% detersive surfactant and other detergent ingredients.
  • the composition can be any form, for example a solid powder or tablet form, or a liquid including gel form, or any combination thereof.
  • the composition may be in any unit dose form, for example a tablet or a pouch, or even a detergent sheet.
  • the laundry detergent composition may comprise from 0wt% to 40wt%, or from above 0wt%, and preferably to 30wt%, or to 25wt%, or to 20wt%, or to 15wt%, or to 10wt%, or to 8wt, or to 6wt%, or to 4wt%, or to 2wt% water. This may be preferred if the composition is in liquid including gel form, and/or unit dose form such as a unit dose pouch.
  • the composition is a fully finished laundry detergent composition.
  • the composition comprises a plurality of chemically different particles populations.
  • the composition is not just a component of a laundry detergent composition that can be incorporated into a laundry detergent composition (such as an enzyme prill, or a surfactant particle, or a bleach particle), it is a fully finished laundry detergent composition. That said, it is within the scope of the present invention for an additional rinse additive composition (e.g. fabric conditioner or enhancer), or a main wash additive composition (e.g. bleach additive) to also be used in combination with the laundry detergent composition during the method of the present invention. Although, it may be preferred for no bleach additive composition is used in combination with the laundry detergent composition during the method of the present invention.
  • an additional rinse additive composition e.g. fabric conditioner or enhancer
  • a main wash additive composition e.g. bleach additive
  • the laundry detergent composition preferably comprises from 0wt% to less than 10wt% zeolite builder, and from 0wt% to less than 10wt% phosphate builder.
  • the laundry detergent composition may comprise cationic polymer.
  • the laundry detergent composition may preferably comprise perfume microcapsule.
  • a highly preferred laundry detergent composition is a solid laundry detergent composition comprising: (a) alkyl ethoxylated sulphate having an average degree of ethoxylation of from 0.5 to 3.5; (b) from 0wt% to 10wt% zeolite builder; (c) from 0wt% to 10wt% phosphate builder; (d) enzyme; (e) bleach catalyst having a structure corresponding to general formula below: wherein R 13 is selected from the group consisting of 2-ethylhexyl, 2-propylheptyl, 2-butyloctyl, 2-pentylnonyl, 2-hexyldecyl, n-dodeoyl, n-tetradecyl, n-hexadecyl, n-octadecyl, iso-nonyl, iso-decyl, iso-tridecyl and iso-pentadecyl; (f)
  • the laundry detergent composition comprises a bleach ingredient
  • the bleach ingredient has a logP o/w no greater than 0, preferably no greater than -0.5, preferably no greater than -1.0, preferably no greater than -1.5, preferably no greater than -2.0, preferably no greater than -2.5, preferably no greater than -3.0, even more preferably no greater than -3.5.
  • the method for determining logP o/w is described in more detail below.
  • the bleach ingredient is capable of generating a bleaching species having a X SO of from 0.01 to about 0.30, preferably from 0.05 to about 0.25, even more preferably from about 0.10 to 0.20.
  • the method for determining X SO is described in more detail below.
  • bleaching ingredients having an isoquinolinium structure are capable of generating a bleaching species that has an oxaziridinium structure.
  • the X SO is that of the oxaziridinium bleaching species.
  • the inventors believe that controlling the electophilicity and hydrophobicity in this above described manner enables the bleach ingredient to be delivered substantially only to areas of the fabric that are more hydrophobic, and that contain electron rich soils, including visible chromophores, that are susceptible to bleaching by highly electrophilic oxidants.
  • the bleaching ingredient is catalytic.
  • a highly preferred bleach ingredient is a bleach catalyst that is capable of accepting an oxygen atom from a peroxyacid and/or salt thereof, and transferring the oxygen atom to an oxidizeable substrate.
  • Suitable bleach catalysts include, but are not limited to: iminium cations and polyions; iminium zwitterions; modified amines; modified amine oxides; N-sulphonyl imines; N-phosphonyl imines; N-acyl imines; thiadiazole dioxides; perfluoroimines; cyclic sugar ketones and mixtures thereof.
  • Suitable iminium cations and polyions include, but are not limited to, N-methyl-3,4-dihydroisoquinolinium tetrafluoroborate, prepared as described in Tetrahedron (1992), 49(2), 423-38 (see, for example, compound 4, p. 433); N-methyl-3,4-dihydroisoquinolinium p-toluene sulphonate, prepared as described in U.S. Pat. 5,360,569 (see, for example, Column 11, Example 1); and N-octyl-3,4-dihydroisoquinolinium p-toluene sulphonate, prepared as described in U.S. Pat. 5,360,568 (see, for example, Column 10, Example 3).
  • Suitable iminium zwitterions include, but are not limited to, N-(3-sulfopropyl)-3,4-dihydroisoquinolinium, inner salt, prepared as described in U.S. Pat. 5,576,282 (see, for example, Column 31, Example II); N-[2-(sulphooxy)dodecyl]-3,4-dihydroisoquinolinium, inner salt, prepared as described in U.S. Pat.
  • Suitable modified amine oxygen transfer catalysts include, but are not limited to, 1,2,3,4-tetrahydro-2-methyl-1-isoquinolinol, which can be made according to the procedures described in Tetrahedron Letters (1987), 28(48), 6061-6064 .
  • Suitable modified amine oxide oxygen transfer catalysts include, but are not limited to, sodium 1-hydroxy-N-oxy-N-[2-(sulphooxy)decyl]-1,2,3,4-tetrahydroisoquinoline.
  • Suitable N-sulphonyl imine oxygen transfer catalysts include, but are not limited to, 3-methyl-1,2-benzisothiazole 1,1-dioxide, prepared according to the procedure described in the Journal of Organic Chemistry (1990), 55(4), 1254-61 .
  • Suitable N-phosphonyl imine oxygen transfer catalysts include, but are not limited to, [R-(E)]-N-[(2-chloro-5-nitrophenyl)methylene]-P-phenyl-P-(2,4,6-trimethylphenyl)- phosphinic amide, which can be made according to the procedures described in the Journal of the Chemical Society, Chemical Communications (1994), (22), 2569-70 .
  • Suitable N-acyl imine oxygen transfer catalysts include, but are not limited to, [N(E)]-N-(phenylmethylene)acetamide, which can be made according to the procedures described in Polish Journal of Chemistry (2003), 77(5), 577-590 .
  • Suitable thiadiazole dioxide oxygen transfer catalysts include but are not limited to, 3-methyl-4-phenyl-1,2,5-thiadiazole 1,1-dioxide, which can be made according to the procedures described in U.S. Pat. 5,753,599 (Column 9, Example 2).
  • Suitable perfluoroimine oxygen transfer catalysts include, but are not limited to, (Z)-2,2,3,3,4,4,4-heptafluoro-N-(nonafluorobutyl)butanimidoyl fluoride, which can be made according to the procedures described in Tetrahedron Letters (1994), 35(34), 6329-30 .
  • Suitable cyclic sugar ketone oxygen transfer catalysts include, but are not limited to, 1,2:4,5-di-O-isopropylidene-D-erythro-2,3-hexodiuro-2,6-pyranose as prepared in U.S. Pat. 6,649,085 (Column 12, Example 1).
  • the bleach catalyst comprises an iminium and/or carbonyl functional group and is typically capable of forming an oxaziridinium and/or dioxirane functional group upon acceptance of an oxygen atom, especially upon acceptance of an oxygen atom from a peroxyacid and/or salt thereof.
  • the bleach catalyst comprises an oxaziridinium functional group and/or is capable of forming an oxaziridinium functional group upon acceptance of an oxygen atom, especially upon acceptance of an oxygen atom from a peroxyacid and/or salt thereof.
  • the bleach catalyst comprises a cyclic iminium functional group, preferably wherein the cyclic moiety has a ring size of from five to eight atoms (including the nitrogen atom), preferably six atoms.
  • the bleach catalyst comprises an aryliminium functional group, preferably a bi-cyclic aryliminium functional group, preferably a 3,4-dihydroisoquinolinium functional group.
  • the imine functional group is a quaternary imine functional group and is typically capable of forming a quaternary oxaziridinium functional group upon acceptance of an oxygen atom, especially upon acceptance of an oxygen atom from a peroxyacid and/or salt thereof.
  • the bleach catalyst has a chemical structure corresponding to the following chemical formula: wherein: n and m are independently from 0 to 4, preferably n and m are both 0; each R 1 is independently selected from a substituted or unsubstituted radical selected from the group consisting of hydrogen, alkyl, cycloalkyl, aryl, fused aryl, heterocyclic ring, fused heterocyclic ring, nitro, halo, cyano, sulphonato, alkoxy, keto, carboxylic, and carboalkoxy radicals; and any two vicinal R 1 substituents may combine to form a fused aryl, fused carbocyclic or fused heterocyclic ring; each R 2 is independently selected from a substituted or unsubstituted radical independently selected from the group consisting of hydrogen, hydroxy, alkyl, cycloalkyl, alkaryl, aryl, aralkyl, alkylenes, heterocyclic ring, alk
  • the laundry detergent composition comprises a bleach catalyst having a structure corresponding to general formula below: wherein R 13 is a branched alkyl group containing from three to 24 carbon atoms (including the branching carbon atoms) or a linear alkyl group containing from one to 24 carbon atoms; preferably R 13 is a branched alkyl group containing from eight to 18 carbon atoms or linear alkyl group containing from eight to eighteen carbon atoms; preferably R 13 is selected from the group consisting of 2-ethylhexyl, 2-propylheptyl, 2-butyloctyl, 2-pentylnonyl, 2-hexyldecyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl, iso-nonyl, iso-decyl, iso-tridecyl and iso-p
  • the bleach catalyst has a structure corresponding to general formula below or mixtures thereof.
  • G is selected from -O-, -CH 2 O-, -(CH 2 ) 2 -, and -CH 2 -.
  • R 1 is selected from H or C 1 -C 4 alkyl. Suitable C 1 -C 4 alkyl moieties include, but are not limited to methyl, ethyl, iso-propyl, and tert-butyl.
  • Each R 2 is independently selected from C 4 -C 8 alkyl, benzyl, 2-methylbenzyl, 3-methylbenzyl, 4-methylbenzyl, 4-ethylbenzyl, 4-iso-propylbenzyl and 4-tert-butylbenzyl.
  • Suitable C 4 -C 8 alkyl moieties include, but are not limited to n-butyl, n-pentyl, cyclopentyl, n-hexyl, cyclohexyl, cyclohexylmethyl, n-heptyl and octyl.
  • G is selected from -O- and -CH 2 -.
  • R 1 is selected from H, methyl, ethyl, iso-propyl, and tert-butyl.
  • Each R 2 is independently selected from C 4 -C 6 alkyl, benzyl, 2-methylbenzyl, 3-methylbenzyl, and 4-methylbenzyl.
  • G is -CH 2 -, R 1 is H and each R 2 is independently selected from n-butyl, n-pentyl, n-hexyl, benzyl, 2-methylbenzyl, 3-methylbenzyl, and 4-methylbenzyl.
  • Log P o/w is determined according to the method found in Brooke, D. N., Dobbs, A. J., Williams, N, Ecotoxicology and Environmental Safety (198b) 11 (3): 251-260 .
  • the parameter X so is determined according to the method described in Adam, W., Haas, W., Lohray, B. B. Journal of the American Chemical Society (1991) 113(16) 6202-6208 .
  • the laundry detergent composition comprises a transition metal catalyst.
  • the transition metal catalyst may be encapsulated.
  • the transition metal bleach catalyst typically comprises a transition metal ion, preferably selected from transition metal selected from the group consisting of Mn(II), Mn(III), Mn(IV), Mn(V), Fe(II), Fe(III), Fe(IV), Co(I), Co(II), Co(III), Ni(I), Ni(II), Ni(III), Cu(I), Cu(II), Cu(III), Cr(II), Cr(III), Cr(IV), Cr(V), Cr(VI), V(III), V(IV), V(V), Mo(IV), Mo(V), Mo(VI), W(IV), W(V), W(VI), Pd(II), Ru(II), Ru(III), and Ru(IV), more preferably Mn(II), Mn(III), Mn(IV), Fe(II), Fe(III), Cr(II), Cr(III), Cr(IV), Cr(V), and Cr(IV),
  • the transition metal bleach catalyst typically comprises a ligand, preferably a macropolycyclic ligand, more preferably a cross-bridged macropolycyclic ligand.
  • the transition metal ion is preferably coordinated with the ligand.
  • the ligand comprises at least four donor atoms, at least two of which are bridgehead donor atoms.
  • the cross-bridged macropolycyclic ligand is coordinated by four or five donor atoms to the same transition metal and comprises:
  • a suitable transition metal bleach catalyst comprises a complex of a transition metal and a macropolycyclic rigid ligand, preferably a cross-bridged macropolycyclic ligand, wherein:
  • Suitable cross-bridged macropolycyclic ligands include:
  • a suitable cross-bridged macropolycyclic ligand is selected from the group consisting of: wherein in these formulas:
  • transition metal bleach catalysts are described in U.S. 5,580,485 , U.S. 4,430,243 ; U.S. 4,728,455 ; U.S. 5,246,621 ; U.S. 5,244,594 ; U.S. 5,284,944 ; U.S. 5,194,416 ; U.S. 5,246,612 ; U.S. 5,256,779 ; U.S. 5,280,117 ; U.S. 5,274,147 ; U.S. 5,153,161 ; U.S. 5,227,084 ; U.S. 5,114,606 ; U.S. 5,114,611 , EP 549,271 A1 ; EP 544,490 A1 ; EP 549,272 A1 ; and EP 544,440 A2 .
  • a suitable transition metal bleach catalyst is a manganese-based catalyst, for example disclosed in U.S. 5,576,282 .
  • Suitable cobalt bleach catalysts arc described, for example, in U.S. 5,597,936 and U.S. 5,595,967 .
  • Such cobalt catalysts are readily prepared by known procedures, such as taught for example in U.S. 5,597,936 , and U.S. 5,595,967 .
  • a suitable transition metal bleach catalyst is a transition metal complex of ligand such as bispidones described in WO 05/042532 A1 .
  • transition metal bleach catalysts provide robust cleaning profiles, especially under dilute wash conditions, and especially against beta-carotene, squalene and unsaturated triglyceride soils, and especially at low washing temperatures.
  • the laundry detergent composition may comprise a pre-formed peracid.
  • the pre-peroxyacid or salt thereof is typically either a peroxycarboxylic acid or salt thereof, or a peroxysulphonic acid or salt thereof.
  • the pre-formed peroxyacid or salt thereof is preferably a peroxycarboxylic acid or salt thereof, typically having a chemical structure corresponding to the following chemical formula: wherein: R 14 is selected from alkyl, aralkyl, cycloalkyl, aryl or heterocyclic groups; the R 14 group can be linear or branched, substituted or unsubstituted; and Y is any suitable counter-ion that achieves electric charge neutrality, preferably Y is selected from hydrogen, sodium or potassium.
  • R 14 is a linear or branched, substituted or unsubstituted C 6-9 alkyl.
  • the peroxyacid or salt thereof is selected from peroxyhcxanoic acid, peroxyheptanoic acid, peroxyoctanoic acid, peroxynonanoic acid, peroxydecanoic acid, any salt thereof, or any combination thereof.
  • the peroxyacid or salt thereof has a melting point in the range of from 30°C to 60°C.
  • the pre-formed peroxyacid or salt thereof can also be a peroxysulphonic acid or salt thereof, typically having a chemical structure corresponding to the following chemical formula: wherein: R 15 is selected from alkyl, aralkyl, cycloalkyl, aryl or heterocyclic groups; the R 15 group can be linear or branched, substituted or unsubstituted; and Z is any suitable counter-ion that achieves electric charge neutrality, preferably Z is selected from hydrogen, sodium or potassium.
  • R 15 is a linear or branched, substituted or unsubstituted C 6-9 alkyl.
  • the pro-formed peroxyacid or salt thereof may be in an encapsulated, preferably molecularly encapsulated, form.
  • the pre-formed peroxyacid molecules are individually separated from each other by any suitable molecular encapsulation means.
  • the pre-formed peroxyacid is a guest molecule in a host-guest complex.
  • the host molecule of the host-guest complex comprises, or is capable of forming (e.g. by their intermolecular configuration), a cavity into which the pre-formed peroxyacid molecule can be located.
  • the host molecule is typically in the form of a relatively open structure which provides a cavity that may be occupied by a pre-formed peroxyacid molecule: thus forming the host-guest complex.
  • the pre-formed peroxyacid molecule may become entrapped by one or more host molecules, for example by the formation of a clathrate compound, also typically known as inclusion compound, cage compound, molecular compound, intercalation compound or adduct.
  • the host molecule is typically capable of forming hydrogen bonds: such as intramolecular hydrogen bonds or intermolecular hydrogen bonds.
  • the host molecule is capable of forming intermolecular hydrogen bonds.
  • Suitable host molecules include: urea; cyclodextrins, particularly beta-cyclodextrins; thiourea; hydroquinone; perhydrotriphenylene; deoxycholic acid; triphenylcarbinol; calixarene; zeolites, particularly wide-pore zeolites; and any combination thereof.
  • the host molecules are most preferably water-soluble; this is desirable so as to enable the effective release and dispersion of the pre-formed peroxyacid on introduction of the host-guest complex into an aqueous environment, such as a wash liquor.
  • the host molecule is urea or thiourea, especially preferably the host molecule is urea.
  • the host-guest complex is preferably at least partially, preferably essentially completely, coated by a coating ingredient; this is desirable so as to further improve the stability of the preformed peroxyacid.
  • the coating ingredient is essentially incapable of forming hydrogen bonds; this helps ensure the optimal intermolecular configuration of the host molecules, especially when the host-guest complex is a clathrate compound, and further improves the stability of the pre-formed peroxyacid.
  • the coating ingredient is chemically compatible with the host-guest complex and has a suitable release profile, especially an appropriate melting point range: the melting point range of the coating ingredient is preferably from 35°C to 60°C, more preferably from 40°C to 50°C, or from 46°C to 68°C.
  • Suitable coating ingredients include paraffin waxes, semi-microcrystalline waxes (also typically known as intermediate-microcrystalline waxes), microcrystalline waxes and natural waxes.
  • Preferred paraffin waxes include: Merck® 7150 and Merck® 7151 supplied by E. Merck of Darmstadt, Germany; Boler® 1397, Boler® 1538 and Boler® 1092 supplied by Boler of Wayne, Pa; Ross® fully refined paraffin wax 115/120 supplied by Frank D.
  • paraffin waxes typically have a melting point in the range of from 46°C to 68°C, and they typically have a number average molecular weight in the range of from 350Da to 420Da. Also suitable are: natural waxes, such as natural bayberry wax, having a melting point in the range of from 42°C to 48°C supplied by Frank D.
  • Suitable coating ingredients include fatty acids, especially hydrogenated fatty acids. However, most preferably the coating ingredient is a paraffin wax.
  • the host-guest complex is in an intimate mixture with a source of acid.
  • the host-guest complex and the source of acid are in particulate form, preferably being in a co-particulate mixture with each other: typically both are present in the same particle.
  • Preferred sources of acid include: fatty acids, especially hydrogenated fatty acids, which may also be suitable coating ingredients and are described above; carboxylic acids, including monocarboxylic acids, and poly-carboxylic acids such as di-carboxylic acids and tri-carboxylic acids.
  • the source of acid is a bi-carboxylic acid.
  • the host-guest complex may be in an intimate mixture with a free radical scavenger.
  • a suitable free radical scavenger is butylated hydroxytoluene.
  • the pre-formed peracid has the ability to bleach even in the absence of an alkalinity source or hydrogen peroxide.
  • the pre-formed peracid is not susceptible to the effects of catalase. This means that on a weight basis, the pre-formed peracid provides a good bleaching performance as one compacts the alkalinity/buffer systems and the wash liquor pH decreases.
  • the composition preferably comprises a source of hydrogen peroxide, preferably from above 0wt% to 15wt%, preferably from 1wt%, or from 2wt%, or from 3wt%, or from 4wt%, or from 5wt%, and preferably to 12wt% ,or preferably from 0wt% to 10wt% source of hydrogen peroxide.
  • the source of hydrogen peroxide is coated, preferred coatings include sulphate salts, silicate salts, carbonate salts, burkeite, borosilicate, and any mixture thereof including any double salt thereof.
  • the wash liquor comprises from above 0g/l to 0.5g/l hydrogen peroxide, preferably from 0.01g/l, and preferably to 0.4g/l, or even to 0.3g/l, or even to 0.2g/l, or even to 0.1g/l.
  • the laundry detergent composition comprises a source of hydrogen peroxide in an amount such that during the method of the present invention from above 0g to 1.5g, or to 1.0g, or to 0.8g, or to 0.6g, or to 0.5g, or to 0.4g source of hydrogen peroxide per litre of water is contacted to said water when forming the wash liquor.
  • the source of hydrogen peroxide comprises from 10% to 100%, by weight of the source of hydrogen peroxide, of hydrogen peroxide.
  • Preferred sources of hydrogen peroxide include sodium perborate in, preferably in monohydrate or tetra-hydrate form or mixtures thereof, sodium percarbonate. Especially preferred is sodium percarbonate.
  • the sodium percarbonate can be in the form of a coated percarbonate particle, the particle being a physically separate and discrete particle from the other particles of the laundry detergent composition, and especially from any bleach activator or the bleach ingredient.
  • the percarbonate can be in the form of a co-particle that additionally comprises a bleach activator such as tetra-ethylene diamine (TAED) and the bleach ingredient.
  • TAED tetra-ethylene diamine
  • a bleach activator at least partially, preferably completely, encloses the source of hydrogen peroxide.
  • the composition comprises a bleach activator.
  • Suitable bleach activators are compounds which when used in conjunction with a hydrogen peroxide source leads to the in situ production of the peracid corresponding to the bleach activator.
  • Various non limiting examples of bleach activators are disclosed in U.S. Patent 4,915,854, issued April 10, 1990 to Mao et al , and U.S. Patent 4,412,934 .
  • the nonanoyloxybenzene sulfonate (NOBS) and tetraacetylethylenediamine (TAED) activators are typical, and mixtures thereof can also be used. See also U.S. 4,634,551 for other typical bleaches and activators useful herein.
  • Another suitable bleach activator is decanoyloxybenzenecarboxylic acid (DOBA).
  • amido-derived bleach activators are those of the formulae: R 1 N(R 5 )C(O)R 2 C(O)L or R 1 C(O)N(R 5 )R 2 C(O) L wherein as used for these compounds R 1 is an alkyl group containing from about 6 to about 12 carbon atoms, R 2 is an alkylene containing from 1 to about 6 carbon atoms, R 5 is H or alkyl. aryl, or alkaryl containing from about 1 to about 10 carbon atoms, and L is any suitable leaving group.
  • a leaving group is any group that is displaced from the bleach activator as a consequence of the nucleophilic attack on the bleach activator by the hydroperoxide anion.
  • a preferred leaving group is oxybenzenesulfonate.
  • bleach activators of the above formulae include (6-octanamido-caproyl)oxybenzenesulfonate, (6-nonanamidocaproyl)oxybenzenesulfonate, (6-decanamido-caproyl)oxybenzenesulfonate, and mixtures thereof as described in U.S. Patent 4,634,551 , incorporated herein by reference.
  • Another class of bleach activators comprises the benzoxazin-type activators disclosed by Hodge et al in U.S. Patent 4,966,723, issued October 30, 1990 , incorporated herein by reference.
  • a highly preferred activator of the benzoxazin-type is:
  • Still another class of preferred bleach activators includes the acyl lactam activators, especially acyl caprolactams and acyl valerolactams of the formulae: wherein as used for these compounds R 6 is H or an alkyl, aryl, alkoxyaryl, or alkaryl group containing from 1 to about 12 carbon atoms.
  • lactam activators include benzoyl caprolactam, octanoyl caprolactam, 3,5,5-trimethylhexanoyl caprolactam, nonanoyl caprolactam, decanoyl caprolactam, undecenoyl caprolactam, benzoyl valerolactam, octanoyl valerolactam, decanoyl valerolactam, undecenoyl valerolactam, nonanoyl valerolactam, 3,5,5-trimethylhexanoyl valerolactam and mixtures thereof. See also U.S.
  • Patent 4,545,784 issued to Sanderson, October 8, 1985 , incorporated herein by reference, which discloses acyl caprolactams, including benzoyl caprolactam, adsorbed into sodium perborate.
  • Highly preferred bleach activators are nonanoyloxybenzene sulfonate (NOBS) and/or tetraacetylethylenediamine (TAED).
  • the weight ratio of bleach activator to source of hydrogen peroxide present in the laundry detergent composition is at least 0.5:1, at least 0.6:1, at least 0.7:1, 0.8:1, preferably at least 0.9:1, or 1.0:1.0, or even 1.2:1 or higher.
  • the laundry detergent composition comprises a layered particle.
  • the layered particle comprises a core and a layer.
  • the core comprises a source of hydrogen peroxide.
  • the layer comprises a binder and a bleach activator.
  • the weight ratio of said source of hydrogen peroxide to said bleach activator present in the layered particle is preferably from about 5:1 to about 1.1:1, or from about 4:1 to about 1.5:1, or about 2:1.
  • the layered particle may have an average diameter of from about 600 ⁇ m to 2000 ⁇ m, or from about 800 ⁇ m to about 1000 ⁇ m.
  • the layer may have a thickness of from about 25 ⁇ m to about 150 ⁇ m, or from about 40 ⁇ m to about 100 ⁇ m.
  • the binder may comprise, based on total layered particle weight, from about 2% to about 20%, or from about 4% to about 15%, or about 6% to about 10%, or from about 7% to about 8% of said layered particle.
  • the binder may comprise, based on total layered particle weight, from about 0.001 % to about 5%, or from about 0.5% to about 3%, or about 1% to about 2% water.
  • the binder may be substantially free of water.
  • the binder may be capable of absorbing from about 0.1% to about 20%, or from about 1 % to about 15%, or from about 2% to about 10% water by weight of said binder over a relative humidity of 80% at 32°C.
  • the binder may have a viscosity of from about 200 to about 20,000, or from about 500 to about 7,000, or from about 1,000 to about 2,000 centipoise at a shear rate of 25 sec -1 at 25°C.
  • the binder may comprise, based on total binder weight, from about 40% to 100%, or about 50% to about 99% of a surfactant material selected from the group consisting of anionic surfactant, nonionic surfactant, and combinations thereof, more preferably alcohol ethoxylate and linear alkylbenzene sulfonate.
  • the binder may comprise, based on total binder weight, from about 60% to about 100%, or about 70% to about 90%, of a non-surfactant material comprising a hydrocarbon material selected from the group consisting of fats, triglycerides, lipids, fatty acids, soft paraffin wax, and combinations thereof.
  • the binder may have a pH of from about 3 to about 9, or from about 5 to about 8, or about 7, as measured as a 10% solution in water.
  • the binder may comprise a solvent.
  • the layered particle may comprise a dusting powder that may comprise a material selected from the group consisting of silicas; zeolites; amorphous aluminosilicates; clays; starches; celluloses; water soluble salts, such as an inorganic salt selected from the group consisting of, sodium chloride, sodium sulphate, magnesium sulphate, and salts and mixtures thereof; polysaccharides including sugars; and combinations thereof.
  • the layer may comprise an additive selected from the group consisting of acidic materials, moisture sinks; gelling agents; antioxidants; organic catalysts and combinations thereof.
  • the additive may comprise an acidic material having a pKa of from about 3 to about 7, or about 5.
  • the acidic material may be ascorbic acid.
  • the additive may comprise a moisture sink that may be selected from the group consisting of crosslinked polyacrylates; sodium salts of maleic/acrylic copolymers; magnesium sulfate; and combinations thereof.
  • the additive may comprise a gelling agent that may be selected from the group consisting of a cellulose including methylcellulose and CMC; alginate and derivatives thereof; starches; polyvinyl alcohols; polyethylene oxide; polyvinylpyrolidone; polysaccharides including chitosan and/or natural gums including carrageenan, xantham gum, guar gum, locust bean gum, and combinations thereof; polyacrylates including cross-linked polyacrylates; alcohol ethoxylates; lignosulfonates; surfactants and mixtures thereof; powdered anionic surfactants; and combinations thereof.
  • a gelling agent that may be selected from the group consisting of a cellulose including methylcellulose and CMC; alginate and derivatives thereof; starches; polyvinyl alcohols; polyethylene oxide; polyvinylpyrolidone; polysaccharides including chitosan and/or natural gums including carrageenan, xantham gum, guar gum, locust bean gum,
  • the additive may comprise an antioxidant that may be selected from the group consisting of phenolic antioxidants; amine antioxidants; alkylated phenols; hindered phenolic compounds; benzofuran or benzopyran; alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, and derivatives thereof; 6-hydroxy-2,5,7,8-tetra-methylchroman-2-carboxylic acid; ascorbic acid and its salts; butylated hydroxy benzoic acids and their salts; gallic.
  • an antioxidant may be selected from the group consisting of phenolic antioxidants; amine antioxidants; alkylated phenols; hindered phenolic compounds; benzofuran or benzopyran; alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, and derivatives thereof; 6-hydroxy-2,5,7,8-tetra-methylchroman-2-carboxylic acid; ascor
  • the additive may comprise an organic catalyst that may be selected from the group consisting of iminium cations and polyions; iminium zwitterions; modified amines; modified amine oxides; N-sulphonyl imines; N-phosphonyl imines; N-acyl imines; thiadiazole dioxides; perfluoroimines; cyclic sugar ketones; and combinations thereof; or an organic catalyst selected from the group consisting of 2-[3-[(2-hexyldodecyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 3,4-dihydro-2-[3-[(2-pentylundecyl)oxy]-2-(sulfooxy)propyl]isoquinolinium, inner salt; 2-[3-[(2-butyldecyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinilinium,
  • the layered particle may be substantially free of fatty acids, fatty acid polyol esters, polyglycols, and fatty alcohol oxalkylates.
  • the composition may comprise a chelant.
  • Suitable chelants include diethylene triamine pentaacetate, diethylene triamine penta(methyl phosphonic acid), ethylene diamine-N'N'-disuccinic acid, ethylene diamine tetraacetate, ethylene diamine tetra(methylene phosphonic acid) and hydroxyethane di(methylene phosphonic acid).
  • a preferred chelant is ethylene diamine-N'N'-disuccinic acid (EDDS) and/or hydroxyethane diphosphonic acid (HEDP).
  • the laundry detergent composition preferably comprises ethylene diaminc-N'N'- disuccinic acid or salt thereof.
  • the ethylene diamine-N'N'-disuccinic acid is in S'S' enantiomeric form.
  • the composition comprises 4,5-dihydroxy-m-benzenedisultonic acid disodium salt.
  • Suitable fabric hueing agents include dyes, dye-clay conjugates, and pigments that preferably satisfy the requirements of Test Method 1, described herein below.
  • Suitable dyes include small molecule dyes and polymeric dyes.
  • Suitable small molecule dyes include small molecule dyes selected from the group consisting of dyes falling into the Colour Index (C.I.) classifications of Direct Blue, Direct Red, Direct Violet, Acid Blue, Acid Red, Acid Violet, Basic Blue, Basic Violet and Basic Red, or mixtures thereof, for example:
  • Suitable polymeric dyes include polymeric dyes selected from the group consisting of polymers containing conjugated chromogens (dye-polymer conjugates) and polymers with chromogens co-polymerized into the backbone of the polymer and mixtures thereof.
  • suitable polymeric dyes include polymeric dyes selected from the group consisting of fabric-substantive colorants sold under the name of Liquitint® (Milliken, Spartanburg, South Carolina, USA), dye-polymer conjugates formed from at least one reactive dye and a polymer selected from the group consisting of polymers comprising a moiety selected from the group consisting of a hydroxyl moiety, a primary amine moiety, a secondary amine moiety, a thiol moiety and mixtures thereof.
  • suitable polymeric dyes include polymeric dyes selected from the group consisting of Liquitint® (Milliken, Spartanburg, South Carolina, USA) Violet CT, carboxymethyl cellulose (CMC) conjugated with a reactive blue, reactive violet or reactive red dye such as CMC conjugated with C.I. Reactive Blue 19, sold by Megazyme, Wicklow, Ireland under the product name AZO-CM-CELLULOSE, product code S-ACMC, alkoxylated triphenyl-methane polymeric colourants, alkoxylated thiophene polymeric colourants, and mixtures thereof.
  • Liquitint® Moquitint®
  • CMC carboxymethyl cellulose
  • a reactive blue, reactive violet or reactive red dye such as CMC conjugated with C.I. Reactive Blue 19, sold by Megazyme, Wicklow, Ireland under the product name AZO-CM-CELLULOSE
  • product code S-ACMC alkoxylated triphenyl-methane polymeric colourants, alkoxylated
  • Suitable dye clay conjugates include dye clay conjugates selected from the group comprising at least one cationic/basic dye and a smectite clay, and mixtures thereof.
  • suitable dye clay conjugates include dye clay conjugates selected from the group consisting of one cationic/basic dye selected from the group consisting of C.I. Basic Yellow 1 through 108, C.I. Basic Orange 1 through 69, C.I. Basic Red 1 through 118, C.I. Basic Violet 1 through 51, C.I. Basic Blue I through 164, C.I. Basic Green 1 through 14, C.I. Basic Brown 1 through 23, CI Basic Black 1 through 11, and a clay selected from the group consisting of Montmorillonite clay, Hectorite clay, Saponite clay and mixtures thereof.
  • suitable dye clay conjugates include dye clay conjugates selected from the group consisting of: Montmorillonite Basic Blue B7 C.I. 42595 conjugate, Montmorillonite Basic Blue B9 C.I. 52015 conjugate, Montmorillonite Basic Violet V3 C.I. 42555 conjugate, Montmorillonite Basic Green G1 C.I. 42040 conjugate, Montmorillonite Basic Red R1 C.I. 45160 conjugate, Montmorillonite C.I. Basic Black 2 conjugate, Hectorite Basic Blue B7 C.I. 42595 conjugate, Hectorite Basic Blue B9 C.I. 52015 conjugate, Hectorite Basic Violet V3 C.I.
  • Suitable pigments include pigments selected from the group consisting of flavanthrone, indanthrone, chlorinated indanthrone containing from 1 to 4 chlorine atoms, pyranthrone, dichloropyranthrone, monobromodichloropyranthrone, dibromodichloropyranthrone, tetrabromopyranthrone, perylene-3,4,9,10-tetracarboxylic acid diimide, wherein the imide groups may be unsubstituted or substituted by C1-C3 -alkyl or a phenyl or heterocyclic radical, and wherein the phenyl and heterocyclic radicals may additionally carry substituents which do not confer solubility in water, anthrapyrimidinecarboxylic acid amides, violanthrone, isoviolanthrone, dioxazine pigments, copper phthalocyanine which may contain up to 2 chlorine atoms per molecule, polychloro
  • the aforementioned fabric hueing agents can be used in combination (any mixture of fabric hueing agents can be used).
  • Suitable fabric hueing agents can be purchased from Aldrich, Milwaukee, Wisconsin, USA; Ciba Specialty Chemicals, Basel, Switzerland; BASF, Ludwigshafen, Germany; Dayglo Color Corporation, Mumbai, India; Organic Dyestuffs Corp., East Lexington, Rhode Island, USA; Dystar, Frankfurt, Germany; Lanxess, Leverkusen, Germany; Megazyme, Wicklow, Ireland; Clariant, Muttenz, Switzerland; Avecia, Manchester, UK and/or made in accordance with the examples contained herein.
  • Suitable hueing agents are described in more detail in US 7,208,459 B2 .
  • the laundry detergent composition comprises enzyme.
  • Suitable enzymes include:
  • the composition comprises greater than 1wt% detersive surfactant, preferably from 10wt% to 40wt%, preferably from 12wt%, or from 15wt%, or even from 18wt% detersive surfactant.
  • the surfactant comprises alkyl benzene sulphonate and one or more detersive co-surfactants.
  • the surfactant preferably comprises C 10 -C 13 alkyl benzene sulphonate and one or more co-surfactants.
  • the co-surfactants preferably are selected from the group consisting of C 12 -C 18 alkyl ethoxylated alcohols, preferably having an average degree of ethoxylation of from 1 to 7; C 12 -C 18 alkyl ethoxylated sulphates, preferably having an average degree of ethoxylation of from 1 to 5; and mixtures thereof.
  • C 12 -C 18 alkyl ethoxylated alcohols preferably having an average degree of ethoxylation of from 1 to 7
  • C 12 -C 18 alkyl ethoxylated sulphates preferably having an average degree of ethoxylation of from 1 to 5
  • mixtures thereof preferably having an average degree of ethoxylation of from 1 to 5
  • other surfactant systems may be suitable for use in the present invention.
  • Suitable detersive surfactants include anionic detersive surfactants, nonionic detersive surfactants, cationic detersive surfactants, zwitterionic detersive surfactants, amphoteric detersive surfactants and mixtures thereof.
  • Suitable anionic detersive surfactants include: alkyl sulphates; alkyl sulphonates; alkyl phosphates; alkyl phosphonates; alkyl carboxylates; and mixtures thereof.
  • the anionic surfactant can be selected from the group consisting of: C 10 -C 18 alkyl benzene sulphonates (LAS) preferably C 10 -C 13 alkyl benzene sulphonates; C 10 -C 20 primary, branched chain, linear-chain and random-chain alkyl sulphates (AS), typically having the following formula: CH 3 (CH 2 )xCH 2 -OSO 3 - M + wherein, M is hydrogen or a cation which provides charge neutrality, preferred cations are sodium and ammonium cations, wherein x is an integer of at least 7, preferably at least 9; C 10 -C 18 secondary (2,3) alkyl sulphates, typically having the following formulae: wherein, M is hydrogen or
  • Preferred anionic detersive surfactants include: linear or branched, substituted or unsubstituted alkyl benzene sulphonate detersive surfactants, preferably linear C 8 -C 18 alkyl benzene sulphonate detersive surfactants; linear or branched, substituted or unsubstituted alkyl benzene sulphate detersive surfactants; linear or branched, substituted or unsubstituted alkyl sulphate detersive surfactants, including linear C 8 -C 18 alkyl sulphate detersive surfactants, C 1 -C 3 alkyl branched C 8 -C 18 alkyl sulphate detersive surfactants, linear or branched alkoxylatcd C 8 -C 18 alkyl sulphate detersive surfactants and mixtures thereof; linear or branched, substituted or unsubstituted alkyl sulphonate detersive surfact
  • Preferred alkoxylated alkyl sulphate detersive surfactants are linear or branched, substituted or unsubstituted C 8-18 alkyl alkoxylated sulphate detersive surfactants having an average degree of alkoxylation of from 1 to 30, preferably from 1 to 10.
  • the alkoxylated alkyl sulphate detersive surfactant is a linear or branched, substituted or unsubstituted C 8-18 alkyl ethoxylated sulphate having an average degree of ethoxylation of from 1 to 10.
  • the alkoxylated alkyl sulphate detersive surfactant is a linear unsubstituted C 8-18 alkyl ethoxylated sulphate having an average degree of ethoxylation of from 3 to 7.
  • the laundry detergent composition comprises an alkyl ethoxylated sulphate having an average degree of ethoxylation of from 0.5 to 3.5, preferably from 1.0 to 3.0, and preferably 1.0 or 3.0.
  • Preferred anionic detersive surfactants are selected from the group consisting of: linear or branched, substituted or unsubstituted, C 12-18 alkyl sulphates; linear or branched, substituted or unsubstituted, C 10-13 alkylbenzene sulphonates, preferably linear C 10-13 alkylbenzene sulphonates; and mixtures thereof. Highly preferred are linear C 10-13 alkylbenzene sulphonates.
  • linear C 10-13 alkylbenzene sulphonates that are obtainable, preferably obtained, by sulphonating commercially available linear alkyl benzenes (LAB);
  • suitable LAB include low 2-phenyl LAB, such as those supplied by Sasol under the tradename Isochem® or those supplied by Petresa under the tradename Petrelab®, other suitable LAB include high 2-phenyl LAB, such as those supplied by Sasol under the tradename Hyblene®.
  • a suitable anionic detersive surfactant is alkyl benzene sulphonate that is obtained by DETAL catalyzed process, although other synthesis routes, such as HF, may also be suitable.
  • the laundry detergent composition comprises a predominantly C 12 alkyl sulphate.
  • Suitable cationic detersive surfactants include: alkyl pyridinium compounds; alkyl quaternary ammonium compounds; alkyl quaternary phosphonium compounds; alkyl ternary sulphonium compounds; and mixtures thereof.
  • the cationic detersive surfactant can be selected from the group consisting of: alkoxylate quaternary ammonium (AQA) surfactants as described in more detail in US 6,136,769 ; dimethyl hydroxyethyl quaternary ammonium as described in more detail in US 6,004,922 ; polyamine cationic surfactants as described in more detail in WO 98/35002 , WO 98/35003 , WO 98/35004 , WO 98/35005 , and WO 98/35006 ; cationic ester surfactants as described in more detail in US 4,228,042 , US 4,239,660 , US 4,260,529 and US 6,022,844 ; amino surfactants as described in more detail in US 6,221,825 and WO 00/47708 , specifically amido propyldimethyl amine; and mixtures thereof.
  • AQA alkoxylate quaternary ammonium
  • Preferred cationic detersive surfactants are quaternary ammonium compounds having the general formula: (R)(R 1 )(R 2 )(R 3 )N + X - wherein, R is a linear or branched, substituted or unsubstituted C 6-18 alkyl or alkenyl moiety, R 1 and R 2 are independently selected from methyl or ethyl moieties, R 3 is a hydroxyl, hydroxymethyl or a hydroxyethyl moiety, X is an anion which provides charge neutrality, preferred anions include halides (such as chloride), sulphate and sulphonate.
  • Preferred cationic detersive surfactants are mono-C 6-18 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chlorides. Highly preferred cationic detersive surfactants are mono-C 8-10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride, mono-C 10-12 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride and mono-C 10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride.
  • the non-ionic detersive surfactant could be an alkyl polyglucoside and/or an alkyl alkoxylated alcohol.
  • the non-ionic detersive surfactant is a linear or branched, substituted or unsubstituted C 8-18 alkyl ethoxylated alcohol having an average degree of ethoxylation of from 1 to 10, more preferably from 3 to 7.
  • the laundry detergent composition preferably comprises an amphilic graft co-polymer, preferably the amphilic graft co-polymer comprises (i) polyethyelene glycol backbone; and (ii) and at least one pendant moiety selected from polyvinyl acetate, polyvinyl alcohol and mixtures thereof.
  • a preferred amphilic graft co-polymer is Sokalan HP22, supplied from BASF.
  • the laundry detergent composition comprises cellulosic based polymer.
  • the cellulosic based polymer can be any polymer that is or derived from cellulose. Suitable cellulosic based polymers include anionically modified celluloses, non-ionically modified celluloses, cationically modified celluloses, zwitterionically modified celluloses, and any mixture thereof. Suitable cellulosic based polymers can be both non-ionically modified and anionically modified, such as a cellulose that is modified by the incorporation of both an alkyl and a carboxymethyl substituent moiety.
  • the cellulosic based polymer is typically a cellulose or a modified cellulose.
  • Suitable cellulosic based polymers include cellulose, cellulose ethers, cellulose esters, cellulose amides and mixtures thereof.
  • Suitable cellulosic based polymers include anionically modified cellulose, nonionically modified cellulose, cationically modified cellulose, zwitterionically modified cellulose, and mixtures thereof.
  • Suitable cellulosic based polymers include methyl cellulose, carboxy methyl cellulose, ethyl cellulose, hydroxyl ethyl cellulose, hydroxyl propyl methyl cellulose, ester carboxy methyl cellulose, and mixtures thereof.
  • Suitable cellulosic based polymers include cationic cellulose and derivatives thereof.
  • Suitable cationic cellulose is available from Amerchol Corp. (Edison, NJ, USA) in their Polymer JR TM and LR TM series of polymers.
  • Other suitable cationic cellulose is the form of a salt of hydroxyethyl cellulose that is reacted with trimethyl ammonium substituted epoxide, such as that supplied by Amerchol Corp. under the tradename Polyquatemium 10 TM .
  • cationic cellulose includes the polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide, such as that supplied by Amerchol Corp. under the tradename Polyquaternium 24 TM .
  • Suitable cellulosic polymers are supplied by Amerchol Corp. under the tradename Polymer LM-200 TM .
  • Other suitable cellulosic based polymers include methylhydroxyethyl cellulose TYLOSE MH50 TM , hydroxypropylmethyl cellulose METHOCEL F4M TM .
  • cellulosic based polymers include: quaternary nitrogen-containing cellulose ethers, such as those described in more detail in US 3,962,418 ; and copolymers of etherified cellulose and starch, such as those described in more detail in US 3,958,581 .
  • the cellulosic based polymer is carboxy methyl cellulose, typically having the following general formula: and wherein at least one R moiety is CH 2 COO - .
  • Preferred cellulosic based polymers are selected from the group consisting of: cellulose; carboxymethyl cellulose; methyl cellulose; ethyl cellulose; hydroxyethyl cellulose; alkyl cellulose; mixture of alkyl and carboxymethyl cellulose; and mixtures thereof. Highly preferred are carboxymethyl cellulose and/or methyl cellulose. Most preferred cellulosic based polymers are carboxymethyl cellulose.
  • the composition preferably comprises polymeric carboxylate. It may be preferred for the composition to comprise at least 5wt% or at least 6wt%, or at least 7wt%, or at least 8wt%, or even at least 9wt%, by weight of the composition, of polymeric carboxylate.
  • the polymeric carboxylate can sequester free calcium ions in the wash liquor.
  • the carboxylate polymers can also act as soil dispersants and can provide an improved particulate stain removal cleaning benefit.
  • Preferred polymeric carboxylates include: polyacrylates, preferably having a weight average molecular weight of from 1,000Da to 20,000Da; co-polymers of maleic acid and acrylic acid, preferably having a molar ratio of maleic acid monomers to acrylic acid monomers of from 1:1 to 1:10 and a weight average molecular weight of from 10,000Da to 200,000Da, or preferably having a molar ratio of maleic acid monomers to acrylic acid monomers of from 0.3:1 to 3:1 and a weight average molecular weight of from 1,000Da to 50,00Da.
  • the composition comprise from 0wt% to 10wt% zeolite builder, preferably to 8wt%,or to 6wt%, or to 4wt%, or even to 2wt% zeolite builder.
  • the composition may even be substantially free of zeolite builder, substantially free means "no deliberately added".
  • Typical zeolite builders are zeolite A, zeolite P and zeolite MAP.
  • the composition comprise from 0wt% to 10wt% phosphate builder, preferably to 8wt%,or to 6wt%, or to 4wt%, or even to 2wt% phosphate builder.
  • the composition may even be substantially free of phosphate builder, substantially free means "no deliberately added".
  • a typical phosphate builder is sodium tri-polyphosphate.
  • the composition may comprise a source of carbonate.
  • Preferred sources of carbonate include sodium carbonate and/or sodium bicarbonate.
  • a highly preferred source of carbonate is sodium carbonate.
  • Sodium percarbonate may also be used as the source of carbonate.
  • the composition comprises from 0wt% to 10wt% sodium carbonate.
  • the composition typically comprises other detergent ingredients.
  • Suitable detergent ingredients include: transition metal catalysts; enzymes such as amylases, carbohydrases, cellulases, laccases, lipases, bleaching enzymes such as oxidases and peroxidases, proteases, pectate lyases and mannanases; suds suppressing systems such as silicone based suds suppressors; brighteners; hueing agents; photobleach; fabric-softening agents such as clay, silicone and/or quaternary ammonium compounds; flocculants such as polyethylene oxide; dye transfer inhibitors such as polyvinylpyrrolidone, poly 4-vinylpyridine N-oxide and/or co-polymer of vinylpyrrolidone and vinylimidazole; fabric integrity components such as oligomers produced by the condensation of imidazole and epichlorhydrin; soil dispersants and soil anti-redeposition aids such as alkoxylated polyamines and ethoxylated ethyleneimine polymers
  • the laundry detergent composition has a reserve alkalinity of at least 5.0, preferably at least 5.5, or at least 6.0, or at least 6.5, or at least 7.0, or at least 7.5,or at least 8.0, or at least 8.5, or at least 9.0, or at least 9.5, or at least 10.0, or at least 10.5, or at least 11.0, or at least 11.5, or at least 12.0, or at least 13, or at least 14, or at least 15, or at least 16, or at least 17, or at least 18, or at least 19, or at least 20.
  • the reserve alkalinity of the composition will not exceed 100.
  • the reserve alkalinity of the detergent composition will be greater than 7.5 and preferably greater than 8.
  • the reserve alkalinity may be greater than 9 or even greater than 9.5 or 10 or higher.
  • the RA may be up to 20 or higher.
  • Adequate reserve alkalinity may be provided, at least in part, for example, by one or more of alkali metal silicates (excluding crystalline layered silicate), typically amorphous silicate salts, generally 1.0 to 2.2 ratio sodium salts, alkali metal, typically sodium, carbonate, bicarbonate and/or sesquicarbonates, persalts such as perborates and percarbonates also contribute to alkalinity.
  • alkali metal silicates excluding crystalline layered silicate
  • amorphous silicate salts generally 1.0 to 2.2 ratio sodium salts
  • alkali metal typically sodium, carbonate, bicarbonate and/or sesquicarbonates
  • persalts such as perborates and percarbonates also contribute to alkalinity.
  • Sodium percarbonate may also be used.
  • the laundry detergent composition comprises an alkalinity source selected from sodium metasilicate, sodium hydroxide, and mixtures thereof.
  • the laundry detergent composition has a pH of less than 11.0 at a concentration of 1g/L in de-ionized water at a temperature of 20°C.
  • the laundry detergent composition has a pH of less than 10.5, or less than 10.0, or even less than 9.5 at a concentration of 1g/L in de-ionized water at a temperature of 20°C.
  • the laundry detergent may have a pH of at least 11.0 at a concentration of 1g/L in de-ionized water at a temperature of 20°C. If the laundry detergent composition has such higher pH profiles, then preferably the laundry detergent composition comprises greater than 10wt%, preferably greater than 12wt%, or greater than 15wt%, or greater than 17wt%, or greater than 20wt%, or greater than 22wt%, or greater than 25wt% alkalinity source.
  • alkalinity sources include: alkali metal silicates (excluding crystalline layered silicate), typically amorphous silicate salts, generally 1.0 to 2.2 ratio sodium salts; alkali metal, typically sodium, carbonate, bicarbonate and/or sesquicarbonates; persalts such as perborates and percarbonates also contribute to alkalinity; and mixture thereof.
  • Sodium percarbonate may also be used.
  • the laundry detergent composition comprises an alkalinity source selected from sodium metasilicate, sodium hydroxide, and mixtures thereof.
  • the pH may be determining by dissolving or diluting the laundry detergent composition to a concentration of 1 g/L at a temperature of 20°C and determining the pH by any suitable method, such as using a pH meter.

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Claims (13)

  1. Procédé de lavage de tissu comprenant l'étape consistant à mettre en contact une composition détergente pour le lavage du linge avec de l'eau pour former une lessive, et à laver le tissu à laver dans ladite lessive, dans lequel la lessive a une température allant de plus de 0 °C à 20 °C, et dans lequel la composition détergente pour le lavage du linge comprend plus de 1 % en poids d'agent tensioactif détersif et d'autres ingrédients détergents choisis parmi une particule stratifiée, dans lequel la particule stratifiée comprend un noyau et une couche, dans lequel le noyau comprend une source de peroxyde d'hydrogène, dans lequel la couche comprend un liant et un activateur de blanchiment, et dans lequel le rapport pondéral de la source de peroxyde d'hydrogène sur l'activateur de blanchiment présent dans la particule stratifiée est dans l'intervalle allant d'environ 5:1 à environ 1,1:1, et/ou une microgélule de parfum.
  2. Procédé selon la revendication 1, dans lequel la composition détergente pour le lavage du linge comprend un ingrédient de blanchiment choisi parmi :
    (a) un ingrédient de blanchiment possédant un logPo/w n'excédant pas environ 0,
    dans lequel l'ingrédient de blanchiment est susceptible de générer des espèces possédant un XSO allant d'environ 0,01 à environ 0,30, et ayant de préférence une structure correspondant à la formule générale ci-dessous :
    Figure imgb0033
     dans laquelle R13 est choisi dans le groupe constitué de 2-éthylhexyle, 2-propylheptyle, 2-butyloctyle, 2-pentylnonyle, 2-hexyldécyle, n-dodécyle, n-tétradécyle, n-hexadécyle, n-octadécyle, iso-nonyle, iso-décyle, iso-tridécyle et iso-pentadécyle ; et/ou
    (b) un catalyseur de blanchiment à base de métal de transition ; et/ou
    (c) un peracide préformé ; et/ou
    (d) une source de peroxyde d'hydrogène revêtue,
    de préférence l'ingrédient de blanchiment est encapsulé ou revêtu et, de préférence, la composition détergente pour le lavage du linge comprend de plus de 0 % en poids à 10 % en poids de source de peroxyde d'hydrogène.
  3. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend un agent chélatant choisi parmi :
    (a) l'acide éthylène diamine-N'N'-disuccinique ou un sel de celui-ci (EDDS) ; et/ou
    (b) le sel disodique d'acide 4,5-dihydroxy-m-benzènedisulfonique.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend un agent teintant.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend une enzyme.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge possède une des caractéristiques suivantes :
    (a) une alcalinité de réserve de 5 ou plus ; et/ou
    (b) un pH inférieur à 11,0 à une concentration de 1 g/L dans de l'eau désionisée à une température de 20 °C ; ou
    (c) comprend plus de 10,0 % en poids d'une source d'alcalinité, et a un pH d'au moins 11,0 à une concentration de 1 g/L dans de l'eau désionisée à une température de 20 °C.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend :
    (a) de 0 % en poids à moins de 10 % en poids d'un adjuvant zéolite : et
    (b) de 0 % en poids à moins de 10 % en poids d'un adjuvant phosphate.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend un agent tensioactif détersif choisi parmi :
    (a) un sulfate d'alkyle éthoxylé possédant un degré moyen d'éthoxylation allant de 0,5 à 3,5 ; et/ou
    (b) principalement un sulfate d'alkyle en C12.
  9. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend un polymère choisi parmi :
    (a) un polymère greffé amphiphile, de préférence le polymère greffé amphiphile comprend :
    (i) un squelette polyéthylène glycol ; et
    (ii) au moins un fragment greffé choisi parmi l'acétate de polyvinyle, l'alcool polyvinylique et leurs mélanges ; et/ou
    (b) un polymère à base cellulosique, de préférence la carboxyméthylcellulose ; et/ou
    (c) un carboxylate polymère ; et/ou
    (d) un polymère cationique.
  10. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge est sous une forme choisie parmi :
    (a) solide ; et/ou
    (b) liquide ; et/ou
    (c) dose unitaire.
  11. Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition détergente pour le lavage du linge comprend de 0 % en poids à 40 % en poids d'eau, de préférence de 0 % en poids à 20 % en poids d'eau, plus préférablement de 0 % en poids à 10 % en poids d'eau.
  12. Procédé selon l'une quelconque des revendications précédentes, dans lequel la lessive a une température allant de plus de 0 °C à 15 °C, de préférence de 0°C à 10°C.
  13. Procédé de lavage d'un tissu comprenant l'étape consistant à mettre en contact une composition détergente solide pour le lavage du linge avec de l'eau de façon à former une lessive, et à laver le tissu dans ladite lessive, dans lequel la lessive a une température allant de plus de 0 °C à 20 °C, et dans lequel la composition détergente solide pour le lavage du linge comprend :
    (a) un sulfate d'alkyle éthoxylé possédant un degré moyen d'éthoxylation allant de 0,5 à 3,5 ;
    (b) de 0 % en poids à 10 % en poids d'adjuvant zéolite ;
    (c) de 0 % en poids à 10 % en poids d'adjuvant phosphate ;
    (d) une enzyme ;
    (e) un catalyseur de blanchiment possédant une structure correspondant à la formule générale ci-dessous :
    Figure imgb0034
     dans laquelle R13 est choisi dans le groupe constitué de 2-éthylhexyle, 2-propylheptyle, 2-butyloctyle, 2-pentylnonyle, 2-hexyldécyle, n-dodécyle, n-tétradécyle, n-hexadécyle, n-octadécyle, iso-nonyle, iso-décyle, iso-tridécyle et iso-pentadécyle ;
    (f) une particule stratifiée, où la particule stratifiée comprend un noyau et une couche, où le noyau comprend une source de peroxyde d'hydrogène, où la couche comprend un liant et un activateur de blanchiment, et où le rapport pondéral de la source de peroxyde d'hydrogène sur l'activateur de blanchiment va d'environ 5:1 à environ 1,1:1 ;
    (g) facultativement, un catalyseur de blanchiment à base de métal de transition ;
    (h) facultativement, un agent teintant ; et
    (i) facultativement, de 0 % en poids à 10 % en poids de carbonate de sodium.
EP09010447.2A 2009-08-13 2009-08-13 Procédé de nettoyage de tissus à basse température Active EP2292725B2 (fr)

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ES09010447T ES2581916T5 (es) 2009-08-13 2009-08-13 Método para lavado de tejidos a baja temperatura
PL09010447.2T PL2292725T5 (pl) 2009-08-13 2009-08-13 Sposób prania tkanin w niskiej temperaturze
EP09010447.2A EP2292725B2 (fr) 2009-08-13 2009-08-13 Procédé de nettoyage de tissus à basse température
HUE09010447A HUE029942T2 (en) 2009-08-13 2009-08-13 Method for washing low temperature fabrics
PCT/US2010/043366 WO2011025615A2 (fr) 2009-08-13 2010-07-27 Procédé de lessivage de tissus à basse température
ARP100102963A AR077863A1 (es) 2009-08-13 2010-08-12 Metodo para el lavado de telas a baja temperatura
US13/371,777 US8586521B2 (en) 2009-08-13 2012-02-13 Method of laundering fabrics at low temperature

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EP2292725A1 (fr) 2011-03-09
WO2011025615A3 (fr) 2011-04-28
ES2581916T5 (es) 2022-11-07
WO2011025615A2 (fr) 2011-03-03
PL2292725T3 (pl) 2017-01-31
HUE029942T2 (en) 2017-04-28
PL2292725T5 (pl) 2022-11-07
WO2011025615A4 (fr) 2011-06-23
EP2292725B2 (fr) 2022-08-24
ES2581916T3 (es) 2016-09-08
AR077863A1 (es) 2011-09-28

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