Patent ID: 6075093
Filing Date: 2000-06-13
Classification: C08F,C08L,C11D

Abstract:
In a laundry detergent composition comprising a surfactant and builder, the improvement comprising adding from about 0.1 to about 25 weight percent, based on the total weight of the laundry detergent composition, of a styrene-anhydride copolymer grafted with polyethylene glycol which is prepared by reacting in a solvent styrene monomer selected from the group consisting of styrene, substituted styrene, and mixtures thereof, with an anhydride monomer selected from the group consisting of maleic anhydride, itaconic anhydride, and mixtures thereof, to form a styrene-anhydride copolymer which is reacted with polyethylene glycol having the formula R.sup.1 --(CH.sub.2 CH.sub.2 O).sub.m --R.sup.2 -- wherein R.sup.1 is H or NH.sub.2 ; R.sup.2 is selected from the group consisting of an alkyl group having C.sub.1 -C.sub.4, phenol, and OH; and m is from about 2 to about 100, to form a water-soluble or water dispersible styrene-anhydride copolymer grafted with polyethylene glycol.