REACTIVE BLACK DYES CONTAINING ACETOXYETHYL SULFONE MOIETY

摘要

This invention relates to a reactive black dye containing acetoxyethyl sulfone moiety and more particularly, to the reactive black dye containing acetoxyethyl sulfone moiety of formula (1), which is characterized by lessening the loss of dyes in filtering process owing to the low solubility by introducing the aminophenyl- beta -acetoxyethyl sulfone moiety, saving the cost for waste water treatment by using a small amount of salt in salting-out process and furthermore obtaining bright color with high dyeing yield and good substantivity wherein M is an alkaline metal atom.