Fiber reactive water soluble 2,4,6-triamino, 3-cyano pyridine-(5) azo dyestuffs
AssigneeCiba-Geigy Corporation
InventorsVisvanathan Ramanathan, Angelo Della Casa, Rene DE Montmollin, Gert Hegar, Hans Ulrich Schutz
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Abstract
Water-soluble azo dyes of the formula WHEREIN Y is a fiber-reactive group, n is 1 or 2, m is 0, 1 or 2 and the benzene rings A and B may be further substituted are disclosed. They are useful for dyeing nitrogen-containing fibers and cellulose materials and are distinguished by very bright and brilliant shades, possessing good stability, fastness to light, wet processing and fixation.
Claims7
A water-soluble azo dye of the formula ##STR20## wherein Y is an aliphatic acyl or heterocyclic fiber-reactive group capable of reacting with the hydroxy groups of cellulose or with the amino groups of polyamides to form a covalent chemical bond therewith;
- n is 1 or 2;
- m is 0, 1 or 2;
- the benzene ring A is further unsubstituted or substituted by halo, lower alkyl, lower alkoxy, nitro or carboxy;
- and the benzene ring B is further unsubstituted or substituted by lower alkyl, lower alkoxy, nitro, carboxy, or is -NHY wherein Y is independently as defined above.
Dependencies are inferred from the claim text.