Reactive blue dyes containing monochlorotriazine and acetoxyethyl sulfone groups

Abstract

The present invention relates to a bifunctional blue reactive dye and more particularly, to the bifunctional blue reactive dye with monochlorotriazine and acetoxyethylsulfone as reactive groups expressed by formula (1), wherein, M is alkaline metal atom, and which provides excellent combination of properties in that 1) the introduction of aminophenyl-β-acetoxyethylsulfone group to the dye may minimize the loss of dye, since its low solubility to water lessens the amount of the remaining solution during filtration, 2) an easier salting-out process requires a smaller amount of salt during the process so that the costs for the treatment of waste water may be significantly reduced, and 3) a better dyeing yield with enhanced substantivity and better brightness in color.

Dependencies are inferred from the claim text.