PROCESS FOR DYEING SILK OR FIBRE BLENDS CONTAINING SILK

摘要

A process for dyeing or printing silk or silk-containing fibre blends with reactive dyes, which comprises the use of a reactive dye of the formula D-Y]n (1), wherein D is the radical of a sulfo group containing dye of the mono- or polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide series, [Y]n, where n is 1 to 4, denotes identical or different reactive radicals Y, except reactive dyes of the formula (1), wherein n is 1 and Y is a chloroacetyl, alpha -bromoacryloyl, alpha , beta -dibromopropionyl, aminochloro-s-triazinyl, C1-C4alkoxychloro-s-triazinyl or C1-C4alkoxy-C1-C4alkoxychloro-s-triazinyl radical, and [Y]2 denotes two identical chloroacetyl, alpha -bromoacryloyl or alpha , beta -dibromopropionyl radicals, in aqueous medium at a temperature in the range from 50 DEG to 130 DEG C., and subsequently effecting dye fixation at pH 8 to 11. Dyeings or prints with good fastness properties are obtained.