| abstract |
Metal-free compounds of the formula <IMAGE> a 1:1 or 1:2 metal complex of a metallizable compound of said formula or a salt of a metal-free compound of said formula or of a 1:1 or 1:2 metal complex thereof each cation of which is independently a non-chromophoric cation, or a mixture, thereof, wherein Fc is the radical of a water-soluble azo, formazan, phthalocyanine, azomethine, oxazine, thiazine, phenazine or triphenylmethane dye, each W is independently -NR1-B1-NR1-, <IMAGE> <IMAGE> <IMAGE> <IMAGE> wherein B1 is linear or branched C2-6alkylene; linear or branched C2-6alkylene interrupted by -O- or -NR1-; linear or branched C3-6alkylene monosubstituted by hydroxy or carboxy or disubstituted by hydroxy, <IMAGE> wherein R2 is hydrogen, C1-4alkyl, C1-4alkoxy, carboxy or sulfo, and n is 0, 1, 2, 3 or 4, and m is 0 or 1, each X is independently a direct bond, -CO- or -SO2-, each a is independently 0 or 1, and b is 1 or 2, wherein each Alk is independently linear or branched C2-4alkylene, and each R1 is independently hydrogen, C1-4alkyl or C1-4alkyl monosubstituted by hydroxy, halo, sulfo, sulfato or carboxy, with the proviso that the hydroxy groups of each alkylene radical substituted by two hydroxy groups are attached to different carbon atoms, useful for dyeing and printing hydroxy group- and nitrogen-containing organic substrates, for example, leather and fibrous materials comprising, natural, or synthetic polyamides or natural or regenerated cellulose, especially textile materials comprising cotton. |