| 摘要 |
This invention relates to disazo dyestuffs for cellulose or cellulose-containing fibers represented by the formula: <IMAGE> +TR <IMAGE> wherein R1 represents a hydrogen atom, a nitro group, a halogen atom, an alkyl group of 1 or 2 carbon atoms or an acetylamino group; R2 and R3 each represents a hydrogen atom, an alkyl group of 1 or 2 carbon atoms, and alkoxy group or an acetylamino group; Y1 and Y2 each represents a hydrogen atom or an alkyl group, and alkenyl group, a cyclohexyl group, an aryl group or an aralkyl group which group ma optionally be substituted by cyano, hydroxyl, lower alkoxy or dialkylamino, or NY1Y2 represents a 5-membered or 6-membered nitrogen-containing heretocyclic ring formed by combination of Y1 and Y2, and the total carbon atoms in Y1 and Y2 is 18 or less.
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