Patent ID: 8912248
Filing Date: 2014-12-16
Classification: C08G,C09B,C09D

Abstract:
1. A pigment dispersion, comprising: (a) a pigment; and (b) a polymer having a polyurethane backbone, the polymer comprising: at least one polymer side chain selected from the group consisting of a polyester, a polyacrylate, a polymethacrylate and a polyalkylene oxide; and a pendant, of a polyurethane part of a main chain of the polymer, comprising a partial skeleton, the partial skeleton being different from a partial skeleton included in a chemical structure of the pigment; wherein the pigment is selected from the group consisting of azo pigment, diketopyrrolopyrrole pigment, dioxazine violet pigment, phthalocyanine pigment, and carbon black pigment; and when the pigment is an azo pigment, the partial skeleton of the pendant is selected from the group consisting of an acridone structure, a naphthalimide structure and an anthraquinone structure, when the pigment is a diketopyrrolopyrrole pigment, the partial skeleton of the pendant is a naphthalimide structure or an acridone structure, when the pigment is a dioxazine violet pigment, the partial skeleton of the pendant is a naphthalimide structure, when the pigment is a phthalocyanine pigment, the partial skeleton of the pendant is a naphthalimide structure or an acridone structure, and when the pigment is a carbon black pigment, the partial skeleton of the pendant is an acridone structure.