| 摘要 |
PROBLEM TO BE SOLVED: To obtain a blue reactive dye for a cellulose fiber material good in build-up property and little affected by variation of dyeing conditions. SOLUTION: This reactive dye composition comprises dyes represented by formula (I) and formula (VI). In formula (I), R1 and R2 are each a halogen and a pyridinio, R3-5 are each hydrogen, and U1 is phenylene, and Y1 represents a vinyl sulfone cellulose reactive group, and in formula (VI), X1 represents a halogen atom.
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