Water-insoluble monoazo dyestuffs, methods for their preparation and their use

摘要

Dyes of the formula IMAGE where W is hydrogen, an aliphatic radical, CN, halogen, CF3, nitro, -OR1, -COR2, -SO2R2 or -COOR2, R1 is an aliphatic radical, R2 is an aliphatic radical, X is hydrogen, an aliphatic radical, cyano, nitro or halogen, Y is cyano, alkoxycarbonyl, aminocarbonyl, aminosulphonyl, phenylsulphonyl or alkylsulphonyl, and Z is hydrogen, an aliphatic radical or phenyl, are prepared by diazotisation and coupling.