DYES

摘要

A pyrrolidone dye of Formula (1), wherein: D is a group of Formula (2), or a group of Formula (3), or a group of Formula (4), R1 is alkyl, cycloalkyl, aryl, alkenyl or aralkyl each of which may be optionally substituted; R2 is optionally substituted C¿7-20?-alkyl; or R?1 and R2¿ together with the nitrogen atom to which they are attached form a pyrrolidino or piperidino ring; R3 is alkyl, alkenyl or aralkyl each of which may be optionally substituted or -COR in which R is -H or alkyl, phenyl, cycloalkyl or aralkyl each of which may be optionally substituted or -H; and R4 is an electron withdrawing group; R6 is optionally substituted C¿1-6?-alkyl; or R?1 and R6¿ together with the nitrogen atom to which they are attached form a piperidino or pyrrolidino ring; R?7, R8, R9 and R10¿ each independently is alkyl, cycloalkyl, aryl, alkenyl or aralkyl each of which may be optionally substituted or -H; W is oxygen or sulphur; Z is a direct link or N-R11 in which R11 is -H or optionally substituted alkyl; Ring A is unsubstituted apart from the -NR1R2 group or is substituted by from 1 to 4 further groups; Ring B is unsubstituted or substituted by from 1 to 3 groups; provided that when D is a group of Formula (2) and R?1 and R2¿ are both allyl that R4 is not -CN or that when D is a group of Formula (3) that R?1 and R6¿ are different and R1 is not -C¿2?H5, -C3H7 or -C4H9 when R?6¿ is -C¿2?H4phenyl, -C3H6phenyl and ethyl substituted by -OH, -CN, -OCH3, -NHCOCH3, -Ophenyl and -NHSO2CH3 or that at least one of R?1 and R6¿ is branched chain alkyl except for 3-(4-(N-ethyl-N-ethoxyethoxyethylamino)phenyl)-4-cyano-5-dicyanomethylidene-2-oxo-2,5-dihydropyrrole and 3-(4-(N,N-di-n-octylamino)phenyl)-4-cyano-5-dicyanomethylidene-2-oxo-2,5-dihydropyrrole. The dyes and dye mixtures produce blue to green shades on synthetic textile materials such as polyester which have good build up and good light- and wet-fastness.