| 摘要 |
New fibre-reactive azo dyes of the formula <IMAGE> where the grouping <IMAGE> is a radical of the formula <IMAGE> or the formula <IMAGE> one of the two radicals X1 and X2 is a 2,4-di-fluoro-s-triazine radical or a 2-fluoro-4-amino, hydroxy, alkoxy, aryloxy, alkylthio or arylthio-s-triazine radical and the other is a 2,4-difluoro, chloro or bromo-s-triazine radical or a 2-fluoro, chloro or bromo-4-amino, hydroxy, alkoxy, aryloxy, alkylthio or arylthio-s-triazine radical, R is a bridge member and n is 0 or 1, obtained when an azo compound of the formula <IMAGE> where D, R and n are each as defined under the formula (1), a copper-donating agent, one equivalent of a 2,4,6-trifluoro-s-triazine or of a 2,4-difluoro-6-amino, hydroxy, alkoxy, aryloxy, alkylthio or arylthio-s-triazine and an equivalent of a 2,4,6-trifluoro, chloro or bromo-s-triazine or of a 2,4-difluoro, chloro or bromo-6-amino, hydroxy, alkoxy, aryloxy, alkylthio or arylthio-s-triazine are reacted by coppering and acylation in any desired order to form a fibre-reactive azo dye of the formula (1). The fibre-reactive azo dyes of the formula (1) are notable for high reactivity and a high degree of fixation, and they dye cellulose-containing materials in fast blue shades. |
