Azo pigment composition, process for production of the composition, dispersions containing the composition, colored compositions and jet printing ink

Abstract

An azo pigment composition which exhibits extremely excellent hue and light fastness and excellent tinting strength (color density), preferably, an azo pigment composition which contains an azo pigment having characteristic X-ray diffraction peaks at different diffraction angles or a tautomer thereof. An azo pigment composition, characterized by containing at least one of the azo pigment represented by formula (1) which exhibits characteristic X-ray diffraction peaks at Bragg angles (2Theta +- 0.2 DEG ) of 7.6 DEG, 25.6 DEG, and 27.7 DEG in X-diffraction with characteristic Cu-Ka line, or tautomers thereof.

Description

technical field The present invention relates to an azo pigment composition, a method for preparing the azo pigment composition, a dispersion containing the azo pigment composition, a coloring composition, and an ink for inkjet recording. Background technique In recent years, as image recording materials, materials for forming color images in particular have dominated. Specifically, inkjet recording materials, thermal transfer recording materials, electrophotographic recording materials, transfer-type silver halide photosensitive materials, printing inks, recording pens, and the like are commonly used. Also, in the case of photographing apparatuses, in imaging devices such as CCDs and in the case of displays, in LCDs or PDPs, color filters are used for recording and reproducing color images. In these color image recording materials and color filters, colorants (dyes or pigments) of three primary colors by so-called additive color mixing or subtractive color mixing are used ...

AI Technical Summary

Problems solved by technology

However, all of the specific compounds described in these patent documents are soluble in water or organic solvents, and are insufficient in chemical resistance

In the case of producing full-color by the subtractive color mixing method using three colors of yellow, magenta, and cyan or using four colors to which black is also added, when a pigment having poor fastness is used as a pigment for one color , the gray balance of printed materials will change over time, and when pigments with poor color characteristics are used, the color reproducibility when printing will be reduced

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