Patent ID: 8828132
Filing Date: 2014-09-09
Classification: C09B,C09D,G02B

Abstract:
1. A pigment composition comprising: (A) an azo pigment represented by the following general formula (1); and (B) a pigment derivative having a hydrophilic group and represented by the following general formula (B1): 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, an aliphatic sulfonyl group, or an arylsulfonyl group; R R 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; when n=2, the general formula (1) represents a dimer formed through R when n=3, the general formula (1) represents a trimer formed through R when n=4, the general formula (1) represents a tetramer formed through R the general formula (1) does not comprise any ionic hydrophilic group; wherein P represents an azo series colorant residue; X represents —SO n1 represents an integer of from 1 to 4; and further provided that the pigment derivative is an azo series pigment derivative represented by the following general formula (B2), a tautomer, salt, or hydrate thereof: wherein G R R A at least one of R n when n when n when n