| 摘要 |
Azo dye of the formula <IMAGE> (1) wherein X represents an alpha , beta -dichloropropionyl or alpha , beta -dibromopropionyl group or an alpha -chloroacryloyl or alpha -bromoacryloyl group, Y represents hydrogen, chlorine, low molecular alkyl or alkoxy or a sulpho group, Z represents an OH group or a radical of the m-sulphobenzene series, R represents a substituted or unsubstituted alkyl radical of 1 to 8 carbon atoms, and m is 1 or 2, and wherein the group -NH-X is in meta- or para-position to the azo group. These dyes give strong, brilliant, and bright yellow dyeings on cotton, regenerated cellulose, and natural or synthetic polyamide materials, characterized by excellent light fastness and good wet fastness.
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