Patent ID: 9487665
Filing Date: 2016-11-08
CPC Classification: C08K,C09D,Y10T

Claim Text:
1. A pigment dispersion liquid for inkjet ink, comprising: a pigment; a pigment dispersing agent; a compound having an ethylenically unsaturated double bond; a polymerization inhibitor; and a compound having a polyalkylene oxide chain and/or an aliphatic hydrocarbon chain having 12 or more carbon atoms, wherein the compound can contain an amide group or can have an amino group at a terminal thereof, and the amino group can be a salt-forming amino group, wherein a molecular weight of the compound having an ethylenically unsaturated double bond is 150 to 400; wherein the compound having an ethylenically unsaturated double bond is liquid at 25° C. and is used as a dispersion medium, and wherein the pigment dispersing agent has an amine value of 20 mg KOH/g or less and an acid value of 10 mg KOH/g or less, and the pigment dispersing agent contains one or more components selected from the group consisting of: a copolymer having a styrene-derived repeating unit, a repeating unit derived from an unsaturated fatty acid having 12 or more carbon atoms, and a repeating unit derived from a polyalkylene oxide having an ethylenically unsaturated double bond; an alkali metal salt of the copolymer; an alkaline-earth metal salt of the copolymer; an ammonium salt of the copolymer; and an amine derivative of the copolymer.