5-Nitrothiazolyl-2-azophenyl disperse dyes

Abstract

This invention relates to monoazo compounds of the formula I, ##STR1## in which R.sub.1 signifies a hydrogen atom, an alkyl radical or an unsubstituted or substituted phenyl radical, Each of R.sub.2 and R.sub.3 signifies a hydrogen atom, a cycloalkyl radical, an alkenyl radical or an unsubstituted or substituted alkyl radical, with the proviso that when one of R.sub.2 and R.sub.3 signifies a hydrogen atom, the other has a significance other than hydrogen, R.sub.4 signifies an .alpha.- or .beta.-chloro- or bromoethyl radical, R.sub.5 signifies a hydrogen atom or a methoxy or ethoxy radical, and X signifies a group of the formula --CO--or --CO--O--. These compounds are useful as disperse dyes, particularly for the exhaust dyeing, pad dyeing and printing of synthetic and semi-synthetic hydrophobic materials such as linear and aromatic polyesters, cellulose acetates and polyamides. The dyeings exhibit good fastness to light, heat treatments, wet treatments, solvents, lubricants, rubbing, cross-dyeing, ozone, gas fumes and chlorine.

Dependencies are inferred from the claim text.