| abstract |
Dyestuffs of the formula <IMAGE> wherein Fb, W, R1, R2, R3, n and m have the meaning given in the description, and their use for dyeing and printing materials containing hydroxyl groups or nitrogen, such as textile fibres, filaments and fabrics of wool, silk or synthetic polyamide or polyurethane fibres, and for washfast dyeing and printing natural or regenerated cellulose. The dyeings obtained are distinguished by good fastness to wet processing. |