PIGMENT DISPERSION, AND INK COMPOSITION, CURABLE COMPOSITION AND CURABLE INK COMPOSITION PRODUCED WITH PIGMENT DISPERSION
First Claim
1. A pigment dispersion, comprising:
- (a) a pigment; and
(b) a polymer compound as a dispersant for the pigment (a),wherein the polymer compound comprises a urethane bond in a main chain, comprises a pendant moiety comprising a skeleton which is the same as a partial skeleton of the pigment (a), and further comprises, at a side chain, at least one polymer chain selected from the group consisting of a polyester chain, a poly(meth)acrylate chain, and a polyalkylene oxide chain, andwherein the molecular weight of the skeleton which is the same as a partial skeleton of the pigment (a) is from 20 to 70% of the molecular weight of the pigment (a).
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Abstract
The present invention provides a pigment dispersion, including: (a) a pigment; and (b) a polymer compound as a dispersant for the pigment (a), wherein the polymer compound includes a urethane bond in a main chain, includes a pendant moiety containing a skeleton which is the same as a partial skeleton of the pigment (a), and further includes, at a side chain, at least one polymer chain selected from the group consisting of a polyester chain, a poly(meth)acrylate chain, and a polyalkylene oxide chain, and wherein the molecular weight of the skeleton which is the same as a partial skeleton of the pigment (a) is from 20 to 70% of the molecular weight of the pigment (a).
10 Citations
8 Claims
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1. A pigment dispersion, comprising:
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(a) a pigment; and (b) a polymer compound as a dispersant for the pigment (a), wherein the polymer compound comprises a urethane bond in a main chain, comprises a pendant moiety comprising a skeleton which is the same as a partial skeleton of the pigment (a), and further comprises, at a side chain, at least one polymer chain selected from the group consisting of a polyester chain, a poly(meth)acrylate chain, and a polyalkylene oxide chain, and wherein the molecular weight of the skeleton which is the same as a partial skeleton of the pigment (a) is from 20 to 70% of the molecular weight of the pigment (a). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification