Reactive dye mixture, useful for dyeing and printing, especially ink-jet printing of textile, leather, paper, hair or film, contains bridged tetrakisazo and optionally disazo dyes

摘要

Dye mixture contains: (a) 2 or more bis-compounds (I) with 2 chromophores (D) derived from 8-amino-7-(5-amino-2-sulfophenylazo)-1-naphthol-3,5(6)-disulfonic acid, which are linked by 2-chloro- or 2-pyridinium-1,3,5-triazin-4,6-diyl group(s) (B) and a bridge (Y) and have an azo chromophore substituent (A); or (b) compound(s) (I) and corresponding compound(s) (Ia) with one A- and H-Y-B-substituted D chromophore. Dye mixture contains: (a) 2 or more bis-compounds of formula (I); or (b) compound(s) (I) and corresponding compound(s) of formula (Ia). A-D-(B)a-Y-(B)b-D-A (I) A-D-B-Y-H (Ia) D = a chromophore derived from 8-amino-7-(5-amino-2-sulfophenylazo)-1-naphthol-3,5(6)-disulfonic acid; A = a chromophore group linked to D by an azo group; B = 2-chloro- or 2-pyridinium-1,3,5-triazin-4,6-diyl; Y = a bridging group or a chemical bond if a or b = 0 in one case and 1 in the other. The full definitions are given in the DEFINITIONS (Full Definitions) Field. Independent claims are also included for: (1) A colorant containing the dye mixture and usual additives. (2) A method of dyeing a substrate by applying the dye mixture or colorant at pH above 7.