abstract |
(57) [Summary] [Purpose] To provide a cationic dye having an extremely excellent dyeing ratio when dyeing paper, pulp, acrylic fiber and the like. [Structure] The following general formula (1): (Wherein, R 1, R 2 represents an alkyl group of C 1 ~ 6, Y - represents an anion. ) A cationic dye and a method for dyeing a substrate using this dye. |