| 摘要 |
Fibre reactive dyes of formula (I) are new, in which A<2> and A<3> = the residue of a monoazo-, polyazo-, metal complex azo-, anthraquinone-, phthalocyanine-, formazan-, azomethine-, dioxazine-, phenazine-, stilbene-, triphenylmethane-, xanthene, thioxanthone-, nitroaryl-, naphthoquinone-, pyrenequinone- or perylenetetracarbimide dye; R<2>-R<5> = H or 1-4C alkyl which may be substd. by halogen, OH, CN, 1-4C alkoxy, 1-4C alkoxycarbonyl, carboxy, sulphamoyl, sulpho or sulphato; B = an aliphatic bridging member; and X<2> and X<3> = F, Cl, Br, sulpho or carboxypyridinium gp. Pref. the linking gp. B is pref. -(CH2)2-6- or cyclohexylene which is opt. substd. by 1-4C alkyl. Twelve suitable residues of monoazo chromophores for A<2> and A<3> are claimed.
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