PIGMENT DISPERSION LIQUID FOR INKJET INKS, ACTIVE ENERGY BEAM-CURABLE INKJET INK, AND PRINT

摘要

An object of the present invention is to provide: a pigment dispersion liquid for inkjet ink, which is stable for a long period of storage at not only normal temperature but also high temperature and which increases repellency to ink ejection surface; and an active energy ray-curable inkjet ink composition containing the pigment dispersion liquid, which is less likely to cause clogging at the inkjet device. Disclosed is a pigment dispersion liquid for inkjet ink, comprising: a pigment; a pigment dispersing agent; and a compound having an ethylenically unsaturated double bond, wherein the pigment dispersing agent has an amine value of 20 mgKOH/g or less and an acid value of 10 mgKOH/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.