| abstract |
A reactive monoazo dyestuff of the general formula [I]: ##STR1## wherein R 1 and R 2 each represents substituted or unsubstituted alkyl, cyclohexyl, aralkyl or substituted or unsubstituted aryl, Z represents hydrogen, chlorine, methyl or acylamino, (A) represents substituted or unsubstituted alkylene, (B) represents oxygen or --NH--, X represents fluorine or chlorine, and Y represents --NR 4 R 5 or --OR 6 wherein R 4 , R 5 and R 6 each represents hydrogen, substituted or unsubstituted alkyl, alkenyl, cyclohexyl, aryl or aralkyl, or --NR 4 R 5 represents a 5- or 6-membered nitrogen-containing heterocyclic ring formed by combining R 4 and R 5 . |