| 摘要 |
PROBLEM TO BE SOLVED: To provide: a water-insoluble pigment compound excellent in light resistance; and ink containing the pigment compound.SOLUTION: There is disclosed a water-insoluble pigment compound having a structure represented by general formula (1), where in formula, Rand Reach independently represents H or alkyl; Rrepresents alkyl, aryl or amino; Rrepresents H, cyano, carbamoyl, carboxylic ester group or carboxylic amide group; Rand Reach independently represents a hydrogen atom, alkyl or acyl, or Rand Rbond to each other to form a ring; and A represents carbonyl or sulfonyl. |
