Monohalo substituted triazinyl monoazo dyestuffs for cellulose-containing fibers

摘要

A monoazo dyestuff of the formula: <IMAGE> wherein D represents substituted or unsubstituted phenyl, imidazolyl, pyridyl, thiazolyl, thiadiazolyl, thienyl, benzoisothiazolyl, pyridinoisothiazolyl, thienoisothiazolyl, thienothiazolyl or benzothiazolyl, R1 represents substituted or unsubstituted alkyl, cyclohexyl, alkenyl, aralkyl or aryl, R2 and R3 each represents hydrogen, alkyl optionally substituted by cyano, hydroxy, alkoxy or alkoxyalkoxy, alkenyl, cyclohexyl, aryl or aralkyl, or together represent a 5- or 6-membered nitrogen-containing heterocyclic ring formed by combining R2 and R3, A represents <IMAGE> X represents fluorine or chlorine, and Y1 represents hydrogen, chlorine, methyl or acylamino. The monoazo dyestuff is especially useful in the dyeing of cellulose-containing fibers and exhibits good fastness properties including good wet color fastness and good light fastness.