Di:cyano-phenyl-azo aniline dyestuff use on cellulose - and mixed fibres swollen with water miscible swelling agent

摘要

Dyestuff used for dyeing and printing cellulose (mixed) fibres swollen with water-miscible swelling agents is a 4-(2,6-dicyano)phenylazo-aniline dyestuff (I) of formula (I). In (I) X1 and X3 are H, (ar)alkyl, halogen, (ar)alkoxy, CN, CF3, (di)alkylamino, ar(alk)ylamino or acylamino. X2 is H or a nonionic substit. with a Hammet's para value of -0.7 to +0.8. R1 is H, alkyl, (ar)alkoxy, aryloxy or halogen. R2 is H, (ar)alkyl or alkenyl. R3 is H, alk(en)yl or ar(alkyl). R1 and R2 and R3 can complete a heterocycle. R4 is H, alkyl (ar)alkoxy, aryloxy, halogen, CN, CF3, OH, OCOR5, OSO2R5, NHCOOR5, NHSO2R5, NHCONH2, NHCONHR5 or NHCOR6. R5 and R6 are alk(en)yl or ar(alk)yl. The alk(en)yl and aryl gps. can have conventional nonionic substits. but the alkyl gps. R2, R3 and R5 can only be substd. by halogen, alkoxy, CN, -COO-alkyl or -COO-aryl. Process is useful for dyeing natural and regenerated cellulose and mixt, with fibres, e.g. cellulose ester, polyamides and esp. polyesters. Tone-in-tone scarlet to blue dyeing and printing is obtd., with very good fastness to washing, sublimation, light and dry cleaning.