| 摘要 |
Anthraquinone derivatives of the formula <IMAGE> (I) or of the tautomeric formula <IMAGE> (Ia) in which A denotes an anthraquinone radical which is free from sulphonic acid groups and is optionally further substituted and which preferably consists of at most 5 fused rings, m denotes an integer, preferably 1 or 2, and R1 denotes a hydroxyl group or a radical of the formula <IMAGE> wherein R2 represents a substituent and n represents 0, 1, 2, 3 or 4, processes for their preparation, their use for pigmenting organic macromolecular substances and the material pigmented in this manner.
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