Cyan Colorant Composition Having Improved Chroma And Hue, Pigment Composition Therefor, And Use Thereof For Forming Images
AssigneeClariant International Ltd.
InventorDaisuke Harada
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Abstract
A colorant composition comprising a copper phthalocyanine pigment, a fluorescent dye, and a resin binder, wherein the hue angle of a coating from the composition on white paper is 236° or less, and the fluorescent material provides a maximum reflectance of 90 to 130% in the visible reflection spectrum of a coating film consisting of the fluorescent dye and the resin binder without comprising the copper phthalocyanine pigment.
Claims16
A colorant composition comprising a copper phthalocyanine pigment, a fluorescent dye, and a resin binder, wherein the hue angle of a coating from the composition on white paper is 236° or less, and the fluorescent dye provides a maximum reflectance of 90 to 130% in the visible reflection spectrum of a coating film consisting of the fluorescent dye and the resin binder without comprising the copper phthalocyanine pigment.
A colorant composition comprising a copper phthalocyanine pigment, a fluorescent dye, and a resin binder, wherein
- the copper phthalocyanine pigment includes unsubstituted copper phthalocyanine,
- the fluorescent dye includes a yellow fluorescent dye, and
- the amount of the fluorescent dye is 0.05 to 10 parts by weight relative to 100 parts by weight of the copper phthalocyanine pigment.
A pigment composition for use in preparing a colorant composition, the pigment composition comprising an unsubstituted copper phthalocyanine pigment, a resin binder and a yellow fluorescent dye, wherein the composition comprises 0.05 to 10 parts by weight of the yellow fluorescent dye relative to 100 parts by weight of the unsubstituted copper phthalocyanine pigment.
Dependencies are inferred from the claim text.