POLYURETHANE RESIN ADHESION PIGMENT, PIGMENT DISPERSION COMPOSITION AND INKJET INK COMPOSITION

摘要

Disclosed is a pigment with excellent image density, dispersion, storage stability, re-solubility, and resistance of an ink film to markers and abrasion. The disclosed polyurethane resin adhesion pigment is formed by contacting in an aqueous medium (I) a pigment having acidic groups on the surface, and (II) a water-dispersible polyurethane resin having tertiary amino groups and having anionic polar groups or nonionic polar chains. The aforementioned pigment (I) having acid groups on the surface is preferably a polyurethane resin adhesion pigment which is a self-dispersing carbon black having acid groups on the surface.