Fibre-reactive disazo compounds

摘要

Fibre-reactive disazo compounds conform to the formula I <IMAGE> where the individual symbols are each as defined in Claim 1, and are present as free acid or in salt form. They find utility as reactive dyes for dyeing or printing hydroxyl- or nitrogen-containing organic substrates, in particular leather and fibre material consisting of or containing natural or synthetic polyamides or natural or regenerated cellulose; the most preferred substrate is textile material consisting of or containing cotton. The dyeings and prints obtained show good all round fastness properties such as good lightfastness, wetfastness properties and stability to oxidative influences.