Patent ID: 8222334
Filing Date: 2012-07-17
Classification: C09D

Abstract:
1. A process for producing a water dispersion for ink-jet printing, comprising: (1) producing (B) polymer particles, which consist of (meth)acrylic-styrene-based polymer, by emulsion-polymerizing a first ethylenically unsaturated monomer which is a styrene based monomer with a (meth)acrylic ester; (2) mixing: (A-1) polymer particles comprising a pigment and a second polymer obtained by polymerizing a second ethylenically unsaturated monomer; said (B) polymer particles; (C) at least one water-insoluble organic compound selected from the group consisting of an aliphatic di-carboxylic ester and an aliphatic tri-carboxylic ester; and water; wherein: said (B) polymer particles comprise no pigment; said water is present in an amount of from 40 to 80% by weight based on the total weight of said water dispersion; said mixing forms a water dispersion in which at least a portion of said water-insoluble organic compound (C) is in a separate phase from said polymer particles (A-1) and (B); and said polymer particles (B) and said organic compound (C) are present in a weight ratio of 15/1 to 1/2.