| 摘要 |
A dyestuff of the formula <IMAGE> wherein X1 denotes amino, cyanamino, acetylamino, guanidino, ureido or hydroxyl; Y1 and Z1 denote hydroxyl or amino, with the proviso that at most 2 of the 3 radicals X1, Y1 and Z1 denote hydroxyl; R1 represents hydrogen, nitro, chlorine, bromine, C1-C4-alkyl, C1-C4-alkoxy, nitrile, C1-C4-alkylsulphonyl, trifluoromethyl, phenylsulphonyl, benzylsulphonyl, phenoxy, carbo-C1-C4-alkoxy, carbophenoxy, carbonamido, C1-C4-alkylcarbonylamino, benzoylamino, sulphonamido, or carbonamido or sulfonamide mono-substituted or disubstituted by C1-C4-alkyl, phenyl, or benzyl; and R2 and R3 represent hydrogen; chlorine C1-C4-alkyl, carbo-C1-C4-alkoxy, carbonamido; carbonamido mono-substituted or disubstituted by C1-C4-alkyl, phenyl, or benzyl, or C1-C4-alkoxy and a process for coloring substrates using such dyestuff.
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