| 摘要 |
Dyestuffs of the formula <IMAGE> wherein R1 and R2 are each hydrogen or C1-C4-alkyl and R3 is phenyl substituted with sulpho have the meaning given in the description, and their use for the dyeing and printing of textile materials containing hydroxyl groups and containing nitrogen, especially textile materials consisting of natural and regenerated cellulose, and also those consisting of wool, silk and synthetic polyamide and polyurethane fibers. Dyeings obtained distinguish themselves by good fastness properties and high brilliancy.
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