Patent ID: 8449097
Filing Date: 2013-05-28
Classification: C08F,C09D

Abstract:
1. An aqueous pigment dispersion comprising: (A) a pigment; (B) a dispersion polymer having a neutralization degree of from 50% to 90% and a solubility of from 0.2 g to 0.8 g per 5 ml of water (25° C.), and containing an acidic group and a hydrophobic structural unit (a) having an aromatic ring linked via a linking group to an atom included in a main chain, a content ratio of the aromatic ring being from 10% by mass to less than 20% by mass based on a total mass of the polymer, wherein an acid value of the dispersion polymer (B) is from 85 mgKOH/g to 165 mgKOH/g; and (C) a water-based liquid medium.