Patent ID: 6869994

Claim:
A water soluble carboxyl group-containing polymer composition, comprising 100 parts by weight of a carboxyl group-containing polymer (A) prepared by copolymerizing an α,β-unsaturated carboxylic acid (a) with a compound (b) having at least two ethylenic unsaturated groups; and 0.01 to 20 parts by weight of at least one compound (B) selected from the group consisting of an ester (c) obtained from a polyhydric alcohol and a fatty acid, and an alkylene oxide adduct of an ester (d) obtained from a polyhydric alcohol and a fatty acid, wherein said compound (b) having at least two ethylenic unsaturated groups is at least one compound selected from the group consisting of pentaerythritol tetraallyl ether, tetraallyloxyethane and polyallyl saccharose; said polyhydric alcohol used in the ester (c) obtained from a polyhydric alcohol and a fatty acid is at least one polyhydric alcohol selected from the group consisting of glycerol, polyglycerol and sorbitol; and said polyhydric alcohol used in the alkylene oxide adduct (d) of an ester obtained from a polyhydric alcohol and a fatty acid is at least one polyhydric alcohol selected from the group consisting of glycerol, polyglycerol and sorbitol.