Azo dyes with sulfate groups on the diazotized 2-amino thiazol and 5- amino isothiazol moiety and with aniline, tetrahydroquinoline and benzomorpholine couplers

摘要

This invention relates to azo dyes particularly useful for dyeing polyamide fiber, wool and the like, in which the diazotized amino component bears sulfated hydroxyalkoxycarbonyl or N-(hydroxyalkyl) carbamoyl groups on its ring. These dyes have excellent dyeing properties on polyamide fibers and also impart color to cellulose acetate fibers and wool.PPThe dyes correspond to the formula: ##STR1## wherein R.sup.1 and R represent a large variety of groups; X' is O, NH, N(alkyl)- or N(aryl)-; Z is selected from straight- or branched-chain alkylene which may be substituted, for example, with phenyl, halogen, OSO. sub.3 M, alkoxy, aryloxy and the like; M is H, Na, K or NH.sub.4 ; n is 1 or 2; and the coupler C is selected from a variety of couplers including anilines, tetrahydroquinolines, phenols and the like.