1 To 1 - copper complexes of monoazo or disazo dyes, processes for their preparation and their use for the dyeing or printing of leather or fibers of wool, silk, polyamides and / or regenerated cellulose

摘要

Cu, Ni, Cr or Co water-insoluble complexes derived from ono-azo dyes in the non-metallic state which in the free acid form are of formula (I) (one or A is HO-R-N=N-; HOR is a coupling residue of the arylamine, acetoacetic acid, barbituric acid, pyrazolone or naphthalene type in which the OH gp. is adjacent the azo gps; the other A is OH, X is vinyl or CH2-CH2-Z; Z is OH or an organic or mineral residue capable of being eliminated by alkali treatment; n is 1 or 2; m is 1-3). The complexes (I) are used for dyeing and printing wool, silk, polyamide fibre, cellulose-contg. materials etc.