Yellow Colorant Composition Having Improved Chroma And Hue, Pigment Composition Therefor, And Use Thereof
AssigneeClariant International Ltd.
InventorsDaisuke Harada, Ulrike ROHR, Eusebio RUIZ FERNANDEZ
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Abstract
Problem to be Solved It is intended to provide a yellow colorant composition having improved chroma and lightness, a pigment composition therefor, and use thereof for forming images. Solution The present invention provides a colorant composition containing a yellow pigment, a yellow fluorescent dye, and a resin binder, wherein the maximum reflectance wavelength in the visible reflection spectrum of a coating film consisting of the fluorescent dye and the resin binder without comprising the yellow pigment falls within the range of 490 to 535 nm, and the maximum reflectance of the coating film is 90 to 140%.
Claims12
A colorant composition comprising a yellow pigment, a yellow fluorescent dye, and a resin binder, wherein the maximum reflectance wavelength in the visible reflection spectrum of a coating film consisting of the fluorescent dye and the resin binder without comprising the yellow pigment falls within the range of 490 to 535 nm, and the maximum reflectance of the coating film is 90 to 140%.
A pigment composition comprising a colorant composition, wherein the colorant composition contains a yellow pigment, a yellow fluorescent dye, and a resin binder, wherein the maximum reflectance wavelength in the visible reflection spectrum of a coating film consisting of the fluorescent dye and the resin binder without comprising the yellow pigment falls within the range of 490 to 535 nm, and the maximum reflectance of the coating film is 90 to 140% and wherein the pigment composition comprises 0.01 to 30 parts by mass of the yellow fluorescent dye relative to 100 parts by mass of the yellow pigment.
Dependencies are inferred from the claim text.