Patent ID: 8043423
Filing Date: 2011-10-25
Classification: B41J,C01P,C08F,C08L,C09B,C09C,C09D

Abstract:
1. A pigment dispersion liquid mainly comprising a polymer dispersant, a pigment and water, wherein the polymer dispersant is a copolymer comprised of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit has a block portion comprised of at least one hydrophobic monomer, the hydrophilic unit has at least a repeating unit structure of an acrylamide structure of the following general formula (1), and wherein the segment number (A) of the block portion comprised of a hydrophobic monomer to the number (B) of all segments of the polymer dispersant is in a range of 0.07 to 0.85 in terms of A/B ratio: wherein, R