PIGMENT DISPERSANT, PIGMENT COMPOSITION, AND PIGMENT COLORING AGENT

PROBLEM TO BE SOLVED: To provide pigment dispersants which can significantly improve flowability of ink, paints and others that contain pigments, can prevent particulate aggregation of the pigments, and make it possible to produce colored articles that show excellent gloss and clarity while preventing the occurrence of foreign matter, and resists degradation of brightness even in high-temperature treatment of 230°C or more during production of color filters.SOLUTION: The present invention provides a pigment dispersant that comprises a compound represented by general formula (1) (D-NH- is a structural part derived from an organic dye having an amino group, R is a single bond and the like, Y is a structural part derived from an aliphatic amine having a basic nitrogen atom and others, m is the number of 0.2-3, n is the number of 1-4).SELECTED DRAWING: None 【課題】顔料を含有するインキや塗料などの流動性を著しく改善可能であるとともに、顔料の粒子凝集を防止することができ、異物の発生を防止しつつ、優れた光沢及び鮮明性を示し、かつ、カラーフィルター製造時の２３０℃以上の高温処理によっても輝度が低下しにくい着色物品を製造可能な顔料分散剤を提供する。【解決手段】下記一般式（１）（Ｄ−ＮＨ−は、アミノ基を有する有機色素に由来する構造部分、Ｒは、単結合等、Ｙは、塩基性窒素原子を有する脂肪族アミン等に由来する構造部分、ｍは０．２〜３の数、ｎは１〜４の数）で表される化合物である顔料分散剤である。【選択図】なし