Patent ID: 7772300
Filing Date: 2010-08-10
Classification: C04B,C08F,Y02W

Abstract:
1. A polymeric composition containing A) a water-soluble or water-swellable copolymer containing sulfo groups and comprising where R R M=hydrogen, monovalent or divalent metal cation, ammonium or an organic amine radical and a=½ or 1, in which W=—CO—, —CO—O—(CH x=from 1 to 6, R R R in which Y=O, NH or NR V=—(CH X=halogen, C R where Z=—COO(C R R R m=from 2 to 4, n=from 0 to 200, p=from 0 to 20, and R and B) a nonionic polysaccharide derivative selected from the group consisting of methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylhydroxyethylcellulose, methylhydroxypropylcellulose and welan gum or diutan gum, with a weight ratio of A) to B) of from 1:1 to 5:1.