Substituent Effects on the Colour, Dyeing and Fastness Properties of 4-Phenylazo-1-naphthylamines and of 2-Acetylamino-5-methoxy-4-N-beta-cyanoethyl-N-beta-hydroxyethylaminoazobenzene

The synthesis of a series of blue disperse dyes obtained by diazotisation of substituted anilines and coupling with 2-acetylamino-5-methoxy-4-N-beta-cyanoethyl-N-beta-hydroxyethylaniline and to N-beta-hydroxyethyl-1-naphthylamine is described. Substituent effects on the colour of the dyes is discussed, with particular respect to analogous dyes derived from 4-N-beta-cyanoethyl-N-beta-hydroxyethylaniline. Some dyes from trisubstituted anilines as diazo component colour polyester in deep blue shades of generally good fastness properties