AZO COMPOUND, AZO PIGMENT, PIGMENT DISPERSION, COLOR COMPOSITION, INKJET RECORDING INK, COLOR COMPOSITION FOR COLOR FILTER, COLOR FILTER, AND METHOD FOR PREPARING COLOR COMPOSITION FOR COLOR FILTER

摘要

An azo pigment and a pigment dispersion showing excellent coloring characteristics such as tinctorial strength and hue and excellent fastness such as light fastness are provided. An azo pigment represented by the following general formula (1), its tautomer, a salt or hydrate thereof: General formula (1)
(wherein G represents a hydrogen atom, an aliphatic group, an aryl group, a heterocyclic group, an acyl group, an aliphatic oxycarbonyl group, a carbamoyl group, a sulfonyl 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 an aromatic 5- or 6-membered heterocyclic group, m represents an integer of from 0 to 5, n represents an integer of from 1 to 4 and, when n=2, the formula represents a dimer formed through R 1 , R 2 , A, or G and, when n=3, the formula represents a trimer formed through R 1 , R 2 , A, or G and, when n=4, the formula (1) represents a tetramer formed through R 1 , R 2 , A, or G