A disazo dyestuff for cellulose-containing fibre is represented by the formula
wherein D is substituted or unsubstituted phenyl, pyridyl, thiazolyl or benzothiazolyl; R1 is cyano or alkoxycarbonyl; Y is hydrogen, chlorine, methyl or acylamino; R2 is substituted or unsubstituted alkyl, cyclohexyl, alkenyl or aryl; Z is -NR3R4 or -OR5 wherein R3, R4 and R5 are each hydrogen or an alkyl, alkenyl, cyclohexyl, aryl or aralkyl group which may be substituted by cyano, hydroxy, alkoxy or dialkylamino, or NR3 and R4 may together form a 5-membered or 6- membered nitrogen-containing heterocyclic ring; A is
B is oxygen or -NH-; and X is fluorine or chlorine.
用于含
纤维素纤维的二偶氮
染料由式表示
其中 D 是取代或未取代的苯基、
吡啶基、
噻唑基或
苯并噻唑基; R1 是
氰基或烷氧羰基; Y 是氢、
氯、甲基或酰
氨基; R2 是取代或未取代的烷基、环己基、烯基或芳基;Z 是-NR3R4 或-OR5,其中 R3、R4 和 R5 分别是氢或可被
氰基、羟基、烷氧基或二烷基
氨基取代的烷基、烯基、环己基、芳基或芳烷基,或 NR3 和 R4 可共同形成 5 元或 6 元含氮杂环; A 是
B 是氧或-NH-;X 是
氟或
氯。