| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactive dyestuff useful for dyeing a cellulosic fiber in scarlet color. SOLUTION: This reactive dyestuff composition is obtained by incorporating reactive dyestuffs shown by formulae (I) and (IV) [wherein, (m) is 0 or 1; R1 is H or methyl; Z1 is a heterocycic fiber-reacting group; B1, B2 are each an optional fiber-reacting group; D1, D2 are each a substitutable phenylene or a substitutable naphthylene; X5 is fluoro, chloro, a substitutable pyrydinio or NR8R9; and R8, R9 are each H, a substitutable alkyl or the like].
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