Provided is a 2-methylene glutaric acid copolymer that displays excellent heavy metal capturing ability and fine hydrogen peroxide stabilizing ability when used as a fiber treatment agent. The 2-methylene glutaric acid copolymer includes a structural unit derived from a 2-methylene glutaric acid (salt) at a proportion of 30 to 70 mass% (acid form equivalent) with respect to 100 mass% of structural units derived from total monomers, and a structural unit derived from an unsaturated carboxylic acid monomer at a proportion of 70 to 30 mass% (acid form equivalent) with respect to 100 mass% of the structural units derived from the total monomers.
本发明提供了一种
2-亚甲基戊二酸共聚物,在用作纤维处理剂时,该共聚物具有优异的重
金属捕获能力和优良的
过氧化氢稳定能力。该
2-亚甲基戊二酸共聚物包括一个由
2-亚甲基戊二酸(盐)衍生的结构单元(相对于由总单体衍生的结构单元的 100 质量%,其比例为 30 至 70 质量%(酸式当量)),以及一个由不饱和
羧酸单体衍生的结构单元(相对于由总单体衍生的结构单元的 100 质量%,其比例为 70 至 30 质量%(酸式当量))。