| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition which can realize the fast coloration of a hue ranging from red to blue by adding an oxidation base and a 3-substituted 4,5-diaminopyrazole (acid addition salt) in a medium suited for dyeing. SOLUTION: This composition is prepared by adding 0.0005-12 wt.% oxidation base such as a pyridine derivative or a pyrimidine derivative and 0.0005-12 wt.% 3-substituted 4,5-diaminopyrazole (acid addition salt) of the formula is added to a medium suited for dyeing. In the formula, R1 to R5 are each H, a linear or branched 1-6C alkyl, a 2-4C hydroxyalkyl, a 2-4C aminoalkyl, phenyl, a halogen, a 1-4C alkoxyl, nitro, or the like, provided that when R2 is H, R3 is amino or a 1-4C alkylamino; and R6 is a linear or branched 1-6C alkyl, a 1-4C hydroxyalkyl, a 1-4C aminoalkyl, a (1-4C) alkylamino(1-4C)alkyl, di(1-4C) alkylamino(1-4C)alkyl, a halogen, a 1-4C alkyl, a 1-4C alkoxyl, nitro, trifluoromethyl, or the like. |
