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1. WO2007138054 - CLEANING COMPOSITIONS WITH AMPHIPHILIC GRAFT POLYMERS BASED ON POLYALKYLENE OXIDES AND VINYL ESTERS

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[ EN ]

What is claimed is:

1. A laundry detergent or cleaning composition which comprises an amphiphilic graft polymer based on water-soluble polyalkylene oxides (A) as a graft base and side chains formed by polymerization of a vinyl ester component (B), said poly- mer having an average of < 1 graft site per 50 alkylene oxide units and mean molar masses Mw of from 3000 to 100 000.

2. A laundry detergent or cleaning composition according to Claim 1 wherein the laundry detergent or cleaning composition is selected from the group consisting of liquid laundry detergent compositions, solid laundry detergent compositions, hard surface cleaning compositions, liquid hand dishwashing compositions, solid automatic dishwashing compositions, liquid automatic dishwashing, and tab/unit dose form automatic dishwashing compositions.

3. A laundry detergent or cleaning composition according to either of Claim 1 or Claim 2 wherein the detergent or cleaning composition comprises from 0.05 to 10% by weight of the detergent or cleaning composition, of the amphiphilic graft polymer.

4. A laundry detergent or cleaning composition according to any of the preceding claims wherein the amphiphilic graft polymer has a polydispersity of less than or equal to 3.

5. A laundry detergent or cleaning composition according to any of the preceding claims wherein the amphiphilic graft polymer comprises less than or equal to 10% by weight of the polymer of polyvinyl ester in ungrafted form.

6. A laundry detergent or cleaning composition according to any of the preceding claims wherein the amphiphilic graft polymer has
(A) from 20 to 70% by weight of a water-soluble polyalkylene oxide as a graft
base and

(B) side chains formed by free-radical polymerization of from 30 to 80% by
weight of a vinyl ester component composed of
(B1 ) from 70 to 100% by weight of vinyl acetate and/or vinyl propionate
and
(B2) from 0 to 30% by weight of a further ethylenically unsaturated monomer
in the presence of (A).

7. A laundry detergent according to claim 1 or claim 2 wherein the amphiphilic graft polymer is obtainable by free-radical polymerization of
(B) from 30 to 80% by weight of a vinyl ester component composed of
(B 1) from 70 to 100% by weight of vinyl acetate and/or vinyl propionate
and
(B2) from 0 to 30% by weight of a further ethylenically unsaturated monomer,
in the presence of
(A) from 20 to 70% by weight of a water-soluble polyalkylene oxide of mean mo- lar mass Mn of from 1500 to 20 000,
(C) from 0.25 to 5% by weight, based on component (B), of a free radical- forming initiator, and
(D) from 0 to 40% by weight, based on the sum of components (A), (B) and (C), of an organic solvent
at a mean polymerization temperature at which the initiator (C) has a decomposition half-life of from 40 to 500 min, is polymerized in such a way that the fraction of unconverted graft monomer (B) and initiator (C) in the reaction mixture is constantly kept in a quantitative deficiency relative to the polyalkylene oxide (A).

8. A laundry detergent or cleaning composition according to any of the preceding claims wherein the detergent or composition further comprises a surfactant system.

9. A laundry detergent or cleaning composition according to Claim 8 wherein the surfactant system comprises Cio-Cis alkyl benzene sulfonates.

10. A laundry detergent or cleaning composition according to Claim 8 wherein the surfactant system comprises Cs-C-iβ linear alkyl sulfonate surfactant.

1 1. A laundry detergent or cleaning composition according to either Claim 9 or claim 10 wherein the surfactant system further comprises one or more co-surfactant selected from the groups consisting of nonionic surfactants, cationic surfactants, anionic surfactants and mixtures thereof.

12. A laundry detergent or cleaning composition according to any of the preceding claims wherein the detergent or composition further comprises cleaning adjunct additives.

13. A cleaning implement comprising a nonwoven substrate and the laundry deter- gent or cleaning composition according to any of the preceding claims.