Aqueous composition containing a water-soluble polymer pigment dispersant and a water-soluble polymer pigment dispersant

摘要

PROBLEM TO BE SOLVED: To provide a water-soluble polymer pigment dispersant that is excellent in dispersibility and dispersion stability of a pigment and can be used in a low-VOC paint such as a water-soluble paint.;SOLUTION: A water-soluble polymer pigment dispersant comprises a copolymer essentially comprising: a radically polymerizable monomer (A) containing a nitrogen atom; an alkyl (meth)acrylate monomer (B) having a 1-10C alkyl group; α, β-unsaturated dicarboxylic acid (C); and a monomer (D) represented by formula (1) (wherein R₁ is a hydrogen atom or methyl group; R₂ is at least one chosen from a 0-6C alkylene group, phenylene group and -C(=O)-NH-C(CH₃)₂-CH₂-; and M is a metal).;COPYRIGHT: (C)2013,JPO&INPIT