Process of trichromic dyeing or printing.

摘要

Process for trichromatic dyeing or printing of natural or synthetic polyamide fibre material, characterised in that there is used a dye mixture of at least two yellow or orange-dyeing dyes of the formula (1) where R1 is hydrogen, C1-C4-alkyl, C1-C4-alkoxy or halogen, and X is hydrogen or C1-C4-alkyl, together with at least one red-dyeing dye of the formulae (2) and (3) where R2 is C1-C6-alkyl, phenyl or cyclohexyl and R3 is C1-C6-alkyl, or the radicals R2 and R3 form together with the nitrogen atom connecting them an azepinyl ring, and R4 is hydrogen, C2-C4-alkanoylamino or halogen, and together with at least one of the blue-dyeing dyes of the formulae (4) and (5) where R5 is hydrogen or C1-C4-alkyl, R6 is C1-C4-alkyl or amino, R7 is hydrogen or methyl and R8 is a C2-C4-hydroxyalkylsulphamoyl radical. The process of the invention is suitable for dyeing natural or synthetic polyamide fibre materials from an aqueous liquor or for printing with print pastes.