Patent ID: 9212289
Filing Date: 2015-12-15
Classification: C09D

Abstract:
1. A non-aqueous pigment ink comprising: a pigment complex including a pigment, a dispersant comprising a functional group having reactivity with a polyvalent isocyanate compound, and a polyvalent isocyanate compound, and a non-aqueous solvent; wherein the dispersant is a copolymer having: a unit having an alkyl group of 12 or more carbon atoms, and a unit having a functional group having reactivity with a polyvalent isocyanate compound, wherein relative to a total of all units that constitute the copolymer, an amount of the unit having an alkyl group of 12 or more carbon atoms is from 30 to 80 mol %, and an amount of the unit having a functional group having reactivity with a polyvalent isocyanate compound is from 20 to 70 mol %.