Patent ID: 7754783
Filing Date: 2010-07-13
Classification: C08F,C08L,C09D

Abstract:
1. An ink composition comprising: a solvent; water; a coloring material insoluble in the solvent; and a block polymer compound having a repeating structural unit represented by the following general formula: wherein Y′ is a sulfur atom, wherein R is a linear or branched alkyl group having 3 to 15 carbon atoms, which may be substituted, or an aromatic ring which may be substituted, or a structure in which at most 3 fused rings are substituted or unsubstituted, or a structure in which at most 3 aromatic rings are substituted or unsubstituted and are bonded via a single bond, and n is an integer from 1 to 15, wherein the block polymer compound has a hydrophobic block segment and a hydrophilic block segment, and wherein the coloring material is included in the block polymer compound, and wherein the repeating structural unit represented by the general formula is arranged in the hydrophobic block segment.