Reactive black dye compositions for cellulose fibers together

摘要

PURPOSE: A black reactive dye composition useful for cellulose fiber is provided for obtaining excellent endurance efficiency, dying regularity, reproducibility and improving salting-out effect by comprising orange color reactive dye and black color reactive dye each having specified chemical formula in desired content ratio. CONSTITUTION: The black reactive dye composition useful for cellulose fiber having excellent endurance efficiency, dying regularity and reproducibility and salting-out effect comprises the orange color reactive dye having 7-ethoxycarbonyl-amino group of formula 1 and the black color reactive dye having acethoxyethylsulfone or sulfato ethylsulfone reactive groups of formula 2 (wherein Z is -OSO3M or OC(O)CH3; and M represents alkali metal atom) in a weight ratio of 15-35: 65-85 wt.% based on total weight of composition.