Pigment dispersant, pigment dispersion, and aqueous ink-jet ink composition
AssigneeSCREEN Holdings Co., Ltd.
InventorsMaho KINOSHITA, Ichiro SAKAI
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Abstract
Provided are a pigment dispersant, a pigment dispersion, and an aqueous ink composition for inkjet that satisfactorily inhibit a magenta pigment from aggregating and makes it possible to obtain an aqueous ink applicable by printing in an inkjet system. The pigment dispersant of the present invention is a pigment dispersant for dispersing a magenta pigment, wherein a copolymer composed of a polymer alcohol and an ester, or an acrylic dispersant is dispersed in a dispersion medium, and the copolymer composed of the polymer alcohol and the ester, and the acrylic dispersant have an acid value.
Claims15
A pigment dispersant for dispersing a magenta pigment,
- in which a copolymer composed of a polymer alcohol and an ester, or an acrylic dispersant is dispersed in a dispersion medium, and
- the copolymer composed of the polymer alcohol and the ester, and the acrylic dispersant have an acid value.
Dependencies are inferred from the claim text.