| abstract |
PROBLEM TO BE SOLVED: To provide a blue-based reactive dye for a cellulose fiber material, which has good build-up properties and is less affected by fluctuations in dyeing conditions. SOLUTION: The reactive dye composition containing the dyes of the formulas (I) and (II). Embedded image (I) wherein R1 and R2 are halogen or a substituted pyridinio, R3 to R5 are hydrogen, U1 is a substituted phenylene, a substituted alkylene, and Y1 is a vinylsulfone-based reactive group. ] (II) wherein R6 and R7 are hydrogen, alkoxy, sulfo, etc. 2 vinylsulfone reactive group, Y3 is vinylsulfone reactive group or the formula -NHCO (CH 2) m-Y4 (II Represents a group of I). ] |