| 摘要 |
The present invention relates to anionic dyestuffs of the 1-amino-4-aryl- or -4-alkylamino anthraquinone series which are unsubstituted in the 3-position and bear in the 2-position an arylalkyleneoxy group, and in which at least one aryl group bears a sulpho group, with the proviso that when the substituent in the 4-position is alkylamino such alkyl is linear, branched or cyclic and contains at least 9 carbon atoms and the sum of the carbon atoms of the alkylamino group in the 4-position and the alkylene group in the 2-position is at least 12, which dyestuffs are in the free acid or salt form.
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