Patent ID: 9169410
Filing Date: 2015-10-27
Classification: B05D,C08K,C09D,Y10T

Abstract:
1. An ultraviolet curing ink jet ink composition which contains at least a polymerizable compound and a photopolymerization initiator, and is free from an aqueous solvent, wherein the polymerizable compound comprises at least a urethane oligomer, and wherein the photopolymerization initiator comprises an acylphosphineoxide and α-hydroxyketone, wherein the α-hydroxyketone comprises at least one of 2-hydroxy-1-{[4-(2-hydroxy-2-methyl-propionyl)-benzyl] phenyl}2-methyl-propan-1-one, and oligo {2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propanel}.