| 摘要 |
Anthraquinone dyes I useful for thermal transfer printing have the formula <IMAGE> I where R is alkyl, alkoxyalkyl, aryloxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl or alkoxycarbonylalkyl, which may each contain up to 20 carbon atoms and whose carbon chains may be interrupted by form one to four oxygen atoms in ether function, or is C5-C8-cycloalkyl or phenyl which may each be substituted by C1-C4-alkyl or C1-C4-alkoxy.
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