Water-insoluble nitrophenylazophenyl compounds containing a terminal

Abstract

Dyestuffs falling within the formula: ##STR1## in which A represents the residue of a diazotizable amine free from substituents giving rise to an acid dissociation, m is 0 or 1, the benzene nucleus B may be substituted by methyl or methoxy groups, X represents a hydrogen atom or a methyl, methoxy or ethoxy group, Y represents a hydrogen or chlorine atom or a methyl, methoxy or acylamino group, n is 1, 2 or 3, Z represents --O--CO--CH.sub.2 CH.sub.2 C.sub.2 F.sub.5 or --CO--O--CH.sub.2 CH.sub.2 C.sub.2 F.sub.5 or, provided that Y is --NHCO--CH.sub.2 CH.sub.2 C.sub.2 F.sub.5, a hydrogen atom or a hydroxy, cyano, alkoxycarbonyl or acyloxy group, and R represents a substituted or unsubstituted alkyl group of low molecular weight or --(CH.sub.2).sub.n --Z wherein n and Z have the meanings given above; mixture of such dyestuffs; processes for their preparation; process for the coloration of hydrophobic fibres in which the coloring agent is a dyestuff of the formula given above or a mixture thereof; textile materials dyed or printed with a dyestuff of the formula given above or with a mixture thereof and intermediate products of the formula: ##STR2##