| 摘要 |
Dioxazine dyestuffs of the formula WHEREIN THE A denote aromatic radicals, especially benzene radicals, and the X denote alkoxy, aralkoxy, aryloxy, alkylmercapto, aralkylmercapto or arylmercapto groups, and, in the case that X denotes an alkoxy group, the radicals A must be free of sulphonamide groups are valuable pigments useful for coloring lacquers and plastics in violet shades of excellent fastness properties.
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