Red copper complexes of disazo compounds containing triazine groups

摘要

Lightfast and waterfast azo dyes suitable for dyeing fibers and paper, particularly cellulosic materials, and having the following formula: <IMAGE> <IMAGE> wherein A is a group selected from 4-methoxy-2-sulfophenyl, 4-methoxy-3-sulfophenyl, 2- or 3-sulphonyl, tolyl, 4-nitro-2,2'-disulfostilbyl, sulfonaphthyl and 4-(4-sulfophenylazo)-2-sulfophenyl; B is selected from monoethanolamino, diethanolamino, morpholino, and N-methylamino; W is hydrogen or sulfonic acid; and Z is sulfonic acid attached at the meta or para position relative to the pendant diazo.