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US 8,912,248 B2Granted
Pigment dispersion and ink composition, curable composition and curable ink composition making use of the same
AssigneeFUJIFILM Corporation
InventorNorihide Shimohara
Life of this patent
Estimating the term…
Abstract
The present invention provides a pigment dispersion, containing (a) a pigment; and (b) a polymer having a polyurethane bond in a main chain, having at least one polymer chain selected from the group consisting of a polyester, a polyacrylate, a polymethacrylate and a polyalkylene oxide at a side chain of the polymer, and having a partial skeleton that is different from a partial skeleton included in a chemical structure of the pigment, as a pendant of the main chain.
Claims11
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.
10 more elements
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 diketopyrrolopyrrole pigment, dioxazine violet pigment, phthalocyanine pigment, and carbon black pigment;
- and
- 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.
9 more elements
Dependencies are inferred from the claim text.