| titleOfInvention |
Azo compound, azo pigment, pigment dispersion, coloring composition, ink for inkjet recording, coloring composition for color filter, color filter, and process for preparing a coloring composition for color filter |
| abstract |
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. n An azo pigment represented by the following general formula (1), its tautomer, a salt or hydrate thereof: n n n n n n n n n n n n (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. |