PROCESS FOR DYEING SILK OR SILK-CONTAINING FIBRE BLENDS

摘要

pA process for dyeing silk or silk-containing fiber blends with reactive dyes, which comprises dyeing or impregnating said material with a reactive dye of the formula D-Y]n wherein D is the radical of a sulfo group containing dye of the mono- or polyazo, metal complex azo, anthraquinone, phthalocyanine, formazane, 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, in aqueous medium at a pH value above 8, without the addition of a dispersant or swelling agent, and in the temperature range from 20 DEG to 40 DEG C. for 6 to 48 hours, and storing the impregnated goods in the moist state for 6 to 48 hours at a temperature from 20 DEG to 60 DEG C. Dyeings with good fastness properties are obtained with this process./p [US4568350A]