The invention provides a pigment dispersion composition including an azo pigment represented by formula (1), in which the azo pigment represented by formula (1) does not have an ionic hydrophilic group, an azo pigment derivative and a dispersant. In formula (1), G represents a hydrogen atom, an aliphatic group, an aryl group or a heterocyclic group; R
1
represents an amino group, an aliphatic oxy group, an aliphatic group, an aryl group or a heterocyclic group; R
2
represents a substituent; A represents a heterocyclic group; m represents an integer of 0 to 5; and n represents an integer of 1 to 4, wherein: when n=2, the azo pigment is a dimer formed via R
1
, R
2
, A or G; when n=3, the azo pigment is a a trimer formed via R
1
, R
2
, A or G; and when n=4, the azo pigment is a tetramer formed via R
1
, R
2
, A or G.
本发明提供了一种
颜料分散组合物,包括由公式(1)表示的偶氮
颜料,其中由公式(1)表示的偶氮
颜料不具有离子亲
水基团,还包括偶氮
颜料衍
生物和分散剂。在公式(1)中,G表示氢原子,脂肪族基团,芳基基团或杂环基团;R1表示
氨基基团,脂肪氧基团,脂肪族基团,芳基基团或杂环基团;R2表示取代基;A表示杂环基团;m表示0至5的整数;n表示1至4的整数,其中:当n=2时,偶氮
颜料是通过R1、R2、A或G形成的二聚体;当n=3时,偶氮
颜料是通过R1、R2、A或G形成的三聚体;当n=4时,偶氮
颜料是通过R1、R2、A或G形成的四聚体。