| 摘要 |
Nitro dyes of formula (I), in which X1 and X2 are hydrogen, C1-C6 alkyl, C1-C6 alkoxy or pyrrolidine-2-one-1-yl, X3 is hydrogen or C1-C6 alkyl and X4 is a radical of formula (a), (b) or (c), in which R1 is hydrogen, possibly substituted C1-C12 alkyl, possibly substituted C3-C7 cycloalkyl or possibly substituted phenyl, R2 and R3 are hydrogen, C1-C6 alkyl or C1-C6 alkoxy, R4 is hydrogen, methyl, ethyl, methoxy or ethoxy and R5 is hydrogen or C1-C6 alkyl and process for their production and their use in dyeing or printing textiles.
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