| 摘要 |
Asymmetrical 1:2 chromium complex dyestuffs which, in the form of the free acid, correspond to the formula <IMAGE> wherein X represents CO or a direct bond and m represents 0 or 1 and the rings a, b and c and, if present, fused-on benzene rings can carry further substituents customary in the chemistry of metal complex dyestuffs, are used for dyeing materials containing amide groups, in particular leather, and produce dyeings having a green hue and good general fastness properties.
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