| 摘要 |
Disazo dyes of the formula <IMAGE> (I) <IMAGE> wherein the rings "a" either contain no further substituents and carry the azo group in the para-position to the beta -hydroxybutoxy group, or contain a C1-C4alkyl of C1-C2 alkoxy radical in the para-position, and carry the azo group in the ortho-position, to the beta -hydroxybutoxy group. The dyes are specially suitable for dying and printing polyamide carpets. The dyes are distinguished by good solubility, good exhaustion and good fastness properties, including fastness to perspiration.
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