Use of graft polymers in fabric cleaning
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsWilfried Blokzijl, Christopher Clarkson Jones, Susanne Henning Rogers, Brodyck James Lachlan Royles
Life of this patent
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Abstract
A laundry cleaning composition comprises a graft polysaccharide polymer benefit agent capable of imparting a benefit such as soil release or fabric care, and at least one additional laundry cleaning ingredient.
Claims11
A laundry cleaning composition comprising a graft polymer benefit agent and at least one additional laundry cleaning ingredient, the graft polymer benefit agent having the general formula
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- in which each SU represents a sugar unit in a polysaccharide backbone;
- a represents the number of unsubstituted sugar units as a percentage of the total number of sugar units and is in the range from 0 to 99.9%, preferably 65 to 99%, more preferably 80 to 99%;
- b represents the number of substituted sugar units as a percentage of the total number of sugar units and is in the range from 0.1 to 100%, preferably 1 to 35%, more preferably 1 to 20%;
- m represents the degree of substitution per sugar unit and is from 1 to 3;
- W represents a group —O— or —NR1—, where R1 represents a hydrogen atom or an optionally substituted alkyl group, preferably a hydrogen atom;
- p, q and r are each independently 0 or 1;
- L represents an optionally substituted alkylene, cycloalkylene, arylene or heteroarylene group;
- X and Y each independently represent a group —CH2—, —CO—, —O—CO—, —CO—O—, —NH—CO—, —CO—NH—, —CH(OH)—CH2—, —CH2—CH(OH)—, —CH2—O—CO—, —CO—O—CH2—, —CH2—CO—O—, —O—CO—CH2—, —O—CO—NH—, —NH—CO—O—, —(CR2R3)s—CO—, —CO—(CR2R3)s—, —(CR2R3)t—O—, —O—(CR2R3)t—, —(CR2R3)u—SO—, —SO—(CR2R3)u—, —(CR2R3)v—SO2—, —SO2—(CR2R3)v— or —NH—CO—NH, where s, t, u and v are each independently 0, 1, 2 or 3 and R2 and R3 each independently represent a hydrogen atom or an optionally substituted alkyl group, preferably a hydrogen atom;
- Z1 represents a group
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- P represents a polymer chain, Hal2 represents a halogen, preferably chlorine or bromine and more preferably a bromine, atom and k is from 10 to 200, preferably 10 to 100.
A composition according to any one of the preceding claims, in which p and/or r is I and X and/or Y represents a group —CH2—, —CO—, —CO—NH— or —NH—CO—.
A composition according to any one of the preceding claims, in which the polysaccharide backbone is β-linked, preferably β-1,4-linked.
A composition according to any one of the preceding claims in which the polysaccharide backbone is selected from the group consisting of cellulose, cellulose derivatives (preferably cellulose sulphate, cellulose acetate, sulphoethyl cellulose, cyanoethyl cellulose, methyl cellulose, ethyl cellulose, carboxymethylcellulose, hydroxyethylcellulose or hydroxypropylcellulose), xyloglucans (preferably those derived from Tamarind seed gum), glucomannans (preferably Konjac glucomannan), galactomannans (preferably Locust Bean gum, Guar gum and Xanthan gum), chitosan and chitosan salts.
A composition according to any one of the preceding claims, in which the graft polymer has the general formula
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- wherein at least one or more —OR groups of the polymer are independently replaced by a group
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- in which k, m, p, q, r, W, X, L, Y, Z1, P and Hal2 are as defined in any one of the preceding claims, and at least one or more R groups are independently selected from hydrogen atoms and groups of formulae:
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- wherein each R8 is independently selected from C1-20 (preferably C1-6) alkyl, C2-20 (preferably C2-6) alkenyl (eg vinyl) and C5-7 aryl (eg phenyl) any of which is optionally substituted by one or more substituents independently selected from C1-4 alkyl, C1-12 (preferably C1-4) alkoxy, hydroxyl, vinyl and phenyl groups;
- each R9 is independently selected from hydrogen and groups R8 as hereinbefore defined;
- R10 is a bond or is selected from C1-4 alkylene, C2-4 alkenylene and C5-7 arylene (eg phenylene) groups, the carbon atoms in any of these being optionally substituted by one or more substituents independently selected from C1-12 (preferably C1-4) alkoxy, vinyl, hydroxyl, halo and amine groups;
- each R11 is independently selected from hydrogen, counter cations such as alkali metal (preferably Na) or ½Ca or ½Mg, and groups R8 as hereinbefore defined;
- R12 is selected from C1-20 (preferably C1-6) alkyl, C2-20 (preferably C2-6) alkenyl (eg vinyl) and C5-7 aryl (eg phenyl), any of which is optionally substituted by one or more substituents independently selected from C1-4 alkyl, C1-12 (preferably C1-4) alkoxy, hydroxyl, carboxyl, cyano, sulphonato, vinyl and phenyl groups;
- x is from 1 to 3;
- and
- groups R which together with the oxygen atom forming the linkage to the respective saccharide ring forms an ester or hemi-ester group of a tricarboxylic- or higher polycarboxylic- or other complex acid such as citric acid, an amino acid, a synthetic amino acid analogue or a protein;
- any remaining R groups being selected from hydrogen and ether substituents.
Dependencies are inferred from the claim text.