Water-soluble disazo compounds, containing triazinyl pyridinium group processes for their preparation and their use for dyeing cellulose

摘要

Water-soluble disazo compounds conforming to the general formula (1) (1) and their 1:1 copper complex compounds which possess useful fiber-reactive dye properties and are capable of dyeing carboxamido- and/or hydroxy-containing materials, in particular cellulose fibers, in fast shades; wherein: D1 and D2 are each a phenylene, which may be substituted, or a naphthylene optionally substituted by sulfo; in the case of the copper complex compounds the ortho-position in D1 or D2 or in both being substituted by an oxy group complex-bonded to the copper, or D1 is a radical of the formula (2a), (2b) or (2c) (2a) (2b) (2c) or D2 is a radical which is the reverse of formulas (2a), (2b) or (2c), in which R1 and R2 are each independently of the other hydrogen, nitro, sulfo, methyl, ethyl, methoxy or ethoxy; K1 is a radical of the formula (3a), (3b) or (3c) (3a) (3b) (3c) and K2 is a radical which is the reverse of the formulas (3a); (3b) or (3c) in which M is hydrogen or an alkali metal and R* is hydrogen, methyl or ethyl, where in the case of the copper complex compounds the naphtholic hydroxy groups are complex bonded to the copper atom; X is vinyl, beta -sulfatoethyl or beta -chloroethyl; R is carboxy or carbamoyl.