Patent ID: 8409721
Filing Date: 2013-04-02
Classification: C09D,Y10T

Abstract:
1. A method for producing a pigment-dispersing resin (A) containing divalent group(s) represented by the following formula (I): (wherein R 1 is a C 1-10 alkylene group, m is an integer of 1-30, and the m recurring units, may be the same or different, phosphoric acid group(s) and/or sulfonic acid group(s), comprising: copolymerizing a polymerizable unsaturated monomeric mixture (a-3): a mixture of polymerizable unsaturated monomer(s) (m-6) having the divalent group represented by the above formula (I) and phosphoric acid group, and polymerizable unsaturated monomer(s) (m-7) other than the polymerizable unsaturated monomer(s) (m-6), wherein the polymerizable unsaturated monomeric mixture (a-3) is composed of 1-90 mass % of the polymerizable unsaturated monomer(s) (m-6), and 10-99 mass % of the polymerizable unsaturated monomer(s) (m-7), based on a total amount of the polymerizable unsaturated monomers (m-6) and (m-7); in a reaction solvent (b) which comprises at least 30 mass %, based on a total mass of the reaction solvent, of an organic solvent (b-1) having no hydroxyl group and having a solubility in 20° C. water of at least 100 mass %.