Process for trichromatic dyeing or printing

Abstract From the Canadian patent

A process for dyeing or printing natural or synthetic polyamide fibre material by the trichromatic technique, which comprises using at least one yellow- or orange-dyeing dye of formula (1), (see fig. I), together with at least one red-dyeing dye of formulae (2) and (3) (see fig. II), (see fig. III), and together with at least one of the blue-dyeing dyes of formulae (4) (5) and (6), (see fig. IV), (see fig. V) and, (see fig. VI), wherein the substituents have the meanings claimed in claim 1. The process of this invention is suitable for dyeing natural or synthetic polyamide fibre materials from an aqueous liquor or for printing with printing pastes.