| 摘要 |
<p>The present invention refers to trisado dyes of the formula (I) or an alkal metal salt thereof; wherein Ar1 is an optionally substituted arylene group; Ar2 is an optionally substituted aryl group; R?1, R2, R3, R4, X1 and X2¿ are defined as given in claim 1; each of D?1 and D2¿, independently, is a chromorphe group of the formula (IV) wherein the variables are defines as given in claim 1, a proces for their preparation and a process for colouring fibre material containing a group reactive with a reactive dye.</p> |
