Anthraquinone dyes, process for their preparation, and use thereof

摘要

The invention relates to dyes of the formula wherein X is oxygen or sulfur, R is hydrogen or C1-C4alkyl, Y is an unsubstituted or substituted aryl radical, n is 1, 2 or 3, the benzene ring A may be substituted by halogen and the benzene rings B and D may each independently be substituted by halogen, C1-C4alkyl, C1-C4alkoxy or a radical of the formula -O-CH2CH2-O-R1, wherein R1 is hydrogen, methyl or ethyl. These dyes are suitable for dyeing or printing natural or synthetic polyamide fibres.