Patent ID: 9469936
Filing Date: 2016-10-18
CPC Classification: C08F,C08K,C08L,C09D,D06M

Claim Text:
1. A poly(meth)acrylic acid polymer composition comprising: a poly(meth)acrylic acid polymer; and a bisulfite (salt)-added (meth)acrylic acid (salt), wherein the poly(meth)acrylic acid polymer includes a main chain terminated with a sulfonic acid (salt) group and has a weight average molecular weight of 500 to 1000000, the amount of the bisulfite (salt)-added (meth)acrylic acid (salt) is 0.5 to 15 parts by mass relative to 100 parts by mass of the poly(meth)acrylic acid polymer in the polymer composition, and the poly(meth)acrylic acid polymer has 80 to 100 mol % of non-neutralized carboxyl groups based on 100 mol % of the total of non-neutralized carboxyl groups and neutralized carboxyl groups.