PREPARATION OF AZO DYE AND (5-AMINO-2- (2-HYDROXYETHYLAMINO) PHENYL) (2-HYDROXYETHYL) SULFONE

摘要

A process for the preparation of the sulphone of the formula: IMAGE (1) consists in reductive cleavage of azo/azoxy dyestuffs of the formula IMAGE (6) The invention also relates to the azo/azoxy dyestuffs mentioned.