| 摘要 |
<p>An azo pigment represented by the following formula (1) or a tautomer thereof:
wherein R 1 represents an aliphatic group having 1 to 8 carbon atoms in total, an aryl group having 6 to 12 carbon atoms in total or a heterocyclic group having 2 to 12 carbon atoms in total; R 2 represents a hydrogen atom or an aliphatic group having 1 to 8 carbon atoms in total; R 3 represents a hydrogen atom, an aliphatic group having 1 to 4 carbon atoms in total, an aliphatic amino group having 1 to 8 carbon atoms in total, or an amino group; R 4 and R 5 each independently represent an aliphatic amino group having 1 to 8 carbon atoms in total, or an amino group; and X 2 represents a nitrogen atom or C-CN.</p> |
