Dye mixture comprising 1: 2 chromium complex dye and 1: 2 chromium complex dye

摘要

1:2-Cr complex dyes (Ia) of formula (I) are new (where R1 = H or NO2; Ka = a carbon; R2 = H, 1-4C alkyl or 1-4C alkoxy; R3 = 1-4C alkoxy, 2-4C hydroxyalkoxy. SO3H, COOH, sulphamoyl or carbamoyl; R3 not = SO3H, 1-4C alkoxy in the 2-position or MeO in the 4-position if R2 = H). Also claimed are dye mixts. contg. (a) 1:2-Cr complex azo dye(s) (I) with a wider range of substituents R2 and R3 and (b) other specified dye(s).