Phenyl-azo-naphthyl dyes having a 2-acyloxy, alkoxy or hydroxy-1-arylethylamino group in the 4-position of the naphthalene ring

Abstract

Compounds of the formula, ##STR1## in which R.sub.1 and R.sub.3, which may be the same or different, each signifies hydrogen, hydroxyl, chlorine, bromine, alkyl(C.sub.1-4), alkoxy(C.sub.1-4), alkyl(C.sub.1-4)-carbonyl, alkoxy(C.sub.1-4)-carbonyl, alkyl(C.sub.1-4)-carbonylamino or alkoxy(C.sub.1-4)-carbonylamino, R.sub.2 signifies hydrogen; alkyl(C.sub.1-4)-carbonyl; alkoxy(C.sub.1-4)-carbonyl; benzoyl; unsubstituted alkyl(C.sub.1-4); or alkyl(C.sub.1-4) monosubstituted by alkoxy(C.sub.1-4), phenoxy, benzyloxy, halo or hydroxy, R.sub.4 signifies nitro or cyano, and R.sub.5 signifies chlorine or bromine, their production and use as disperse dyes for substrates comprising high molecular weight hydrophobic polymers such as polyesters, cellulose acetates and synthetic polyamides. The dyeings exhibit good fastness to light, heat treatments, wet treatments, solvents, lubricants, rubbing, cross-dyeing, ozone, flue gas and chlorine.

Dependencies are inferred from the claim text.