Monoazo dyestuffs for cellulose-containing fibers.

摘要

This invention relates to a monoazo dyestuff for cellulose-containing fibers represented by the formula:
<CHEM>
wherein D represents substituted or unsubstituted phenyl, imidazolyl, pyridyl, thiazolyl, thiadiazolyl, thienyl, benzoisothiazolyl, pyridinoisothiazolyl, thienoisothiazolyl, thienothiazolyl or benzothiazolyl, R<1> represents substituted or unsubstituted alkyl, cyclohexyl, alkenyl, aralkyl or aryl, R<2> and R<3> 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 R<2> and R<3>, A represents
<CHEM>
X represents fluorine or chlorine, and Y<1> represents hydrogen, chlorine, methyl or acylamino.