Patent ID: 9657164
Date: 2017-05-23
CPC Classifications: B29C,C08F,C08L

Claim:
1. A composition comprising an emulsion coagulant including: an amphoteric acrylic polymer having an amide group and a sulfonic acid group and having a weight average molecular weight of 13,400 or lower, wherein a molar ratio of the amide group to the sulfonic acid group (amide group:sulfonic acid group) is [0.05 or greater but ⅓ or less]:[0.95 or less but ⅔ or greater], wherein the amphoteric acrylic polymer is produced by using at least an amide group-containing polymerizable monomer and a sulfonic acid group-containing polymerizable monomer; the amide group-containing polymerizable monomer is acrylamide; and the sulfonic acid group-containing polymerizable monomer is at least one of acrylamide t-butyl sulfonic acid and methallylsulfonic acid, and wherein the amphoteric acrylic polymer further has a carboxylic acid group.