Patent ID: 9150744
Filing Date: 2015-10-06
Classification: C09D

Abstract:
1. An aqueous pigment liquid dispersion, comprising: C. I. pigment green 36 (a); a styrene-acrylic acid based copolymer (b); a basic compound (c); and a wetting agent (d), wherein the styrene-acrylic acid based copolymer (b) has an acid value of 120 to 240, a weight average molecular weight of 7,600-20,000, and styrene-based monomer units of 60 mass % or more in the total of all the monomer units constituting the styrene-acrylic acid based copolymer (b), and the mass ratio (b)/(a), which is the mass of the styrene-acrylic acid based copolymer (b) divided by the mass of the C. I. pigment green 36 (a), is within a range of 0.20-0.25; and an iron content within the C. I. pigment green 36 (a) is 30 ppm or less, a magnesium content within the C. I. pigment green 36 (a) is 50 ppm or less, and a silicon content is 45 ppm or less.