Patent ID: 8425027
Filing Date: 2013-04-23
Classification: C09D

Abstract:
1. An ink jet clear ink comprising: a polymer fine particle having a core-shell structure, wherein a shell polymer of the core-shell structure is a copolymer comprising a unit derived from an α,β-ethylenically unsaturated hydrophobic monomer (a) and a unit derived from a monomer selected from an α,β-ethylenically unsaturated acid monomer and a salt thereof, wherein a core polymer of the core-shell structure includes a unit derived from an α,β-ethylenically unsaturated hydrophobic monomer (b) including a monomer containing a chain structure saturated alkyl group, and wherein the core-shell structure is obtained by polymerizing the α,β-ethylenically unsaturated hydrophobic monomer (b) in the presence of the shell polymer, which has been previously polymerized.