| 摘要 |
Anthraquinone-azo pyridone-containing compounds which in one of their tautomeric structures, correspond to the formula <IMAGE> in which A denotes an alpha -anthraquinone radical which is free from sulphonic acid groups and is unsubstituted or substituted and preferably consists of at most 5 fused rings; R1 denotes hydrogen; alkyl, preferably C1-C4-alkyl; aryl, preferably phenyl or naphthyl; carboxyl; carboxylic acid ester, preferably carboxylic acid C1-C4-alkyl ester; or hydroxyl and R2 denotes hydrogen; halogen; nitro; cyano; unsubstituted or substituted carbamoyl or sulphamoyl; alkylcarbonyl, in particular (C1-C4-alkyl)-carbonyl; alkoxycarbonyl, in particular (C1-C4-alkoxy)-carbonyl; alkyl- or unsubstituted or substituted aryl-sulphone, preferably C1-C4-alkyl-sulphone or unsubstituted or substituted phenylsulphone; or a hetero-aromatic radical, for example, a radical of the formula <IMAGE> or of the formula <IMAGE> Such anthraquinone-azo compounds, because of their fastness to light and migration, are suitable for use in producing fast pigmented systems.
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