A 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 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. Since the carboxyl group-containing polymer composition is excellent in the solubility in water and gives the aqueous solution excellent thickening property, the polymer composition can be suitably used as a thickener for various aqueous solutions.
一种含羧基的聚合物组合物,按重量计含有 100 份含羧基的聚合物 (A),其制备方法是将α,β-不饱和
羧酸 (a) 与至少有两个
乙烯基不饱和基团的化合物 (b) 共聚;以及按重量计含有 0.01 至 20 份至少一种化合物 (B),其选自一种由多元醇和
脂肪酸制得的酯 (c),以及一种由多元醇和
脂肪酸制得的酯 (d) 的氧化亚烷加成物。由于含羧基的聚合物组合物在
水中的溶解性极佳,并赋予
水溶液极佳的增稠性,因此该聚合物组合物可适当用作各种
水溶液的
增稠剂。