Patent ID: 6517588
Filing Date: 2003-02-11
Classification: C11D

Abstract:
A laundry treatment composition comprising a water-soluble or water-dispersible rebuild agent for deposition onto a fabric during a treatment process wherein the rebuild agent undergoes during the treatment process, a chemical change by which change the affinity of the rebuild agent for the fabric is increased, said chemical change occurring in or to acetate groups covalently bonded to be pendant on a polymeric backbone of the rebuild agent and which backbone comprises cellulose units or other &bgr;-1,4 linked polysaccharide units, the average degree of substitution of the acetate groups pendant on the saccharide rings of the backbone being from 0.55 to 0.70, the weight average molecular weight of the rebuild agent being in the range 12,000 to 20,000, the pH of an aqueous solution of the laundry treatment composition at 20Â° C. at a concentrate of 1 g of composition per liter of water being in the range 9.5 to 11.0, provided that the laundry treatment composition does not comprise a composition including the following components:a) a cellulose acetate of average molecular weight 10,000, which comprises acetate groups covalently bonded to the cellulose backbone, with a degree of substitution of 0.58 or 0.65; b) a linear alkyl benzene sulphonate; and c) a nonionic surfactant comprising a C13-C15 alcohol ethoxylated with 7 moles of ethylene oxide per mole of alcohol, wherein the weight ratio of anionic surfactant to said ethoxylated alcohol nonionic surfactant is 1:1.