Monoazo compounds having a 5-nitrothiazolyl-2 diazo component radical and a 1,4-phenylene coupling component radical having an n-(alkyl or allyl)-n-(alkoxyl- or alkoxyethoxy-ethoxycarbonyloxyalkyl)amino group in its para position

Abstract

Disclosed are compounds of the formula, ##STR1## wherein R.sub.1 signifies hydrogen, alkyl, unsubstituted phenyl or phenyl substituted by up to three substituents selected from chlorine, bromine and cyano, provided a maximum of one cyano is borne thereby, R.sub.2 signifies alkyl or alkoxy, R.sub.3 signifies hydrogen, alkyl or alkoxy, R.sub.4 signifies alkyl or allyl, R.sub.5 signifies alkyl or .beta.-alkoxyethyl, and alkylene is of 2 to 4 carbon atoms, there being at least 2 carbon atoms in the chain, Their production and use as disperse dyes, particularly for linear aromatic polyester, cellulose 21/2 acetate, cellulose triacetate and synthetic polyamide substrates. The obtained dyeings possess satisfactory fastness to light, thermofixation, sublimation, pleating, water, washing, perspiration, solvents, lubricants, rubbing, cross-dyeing, ozone, gas fumes and chlorine and resistance to various permanent-press processes, soil release finishing and reduction.

Dependencies are inferred from the claim text.