| abstract |
Reactive dyes of the formula <IMAGE> (1) in which R1, R2, R3 and R4 independently of one another are hydrogen or substituted or unsubstituted C1-C4alkyl, B is an aliphatic bridge member, Y1 and Y2 independently of one another are halogen or carboxypyridinium, A1 is the radical of an anthraquinone, phthalocyanine, dioxazine, formazan or disazo dye or a radical of the formulae (2a) to (2h) defined in claim 1 and A2 is as defined above for A1 or is a radical of the formulae (2i) to (2m), where A1 and A2 have different meanings to one another, are particularly suitable for dyeing or printing fibre materials containing hydroxyl groups or containing nitrogen. Dyeings having good fastness properties coupled with a high tinctorial yield are obtained. |