| 摘要 |
<p>Fibre-reactive dyes of the formula (?) , wherein A1 is the radical of a chromophore of the anthraquinone, azo, phthalocyanine or nitroaryl series which contains sulpha groups, A2 is hydrogen or an organic radical, B is an alkylene or arylene radical and each of R1, R2, R3 and R4 independently is hydrogen or alkyl.</p> |
