PROCESS FOR THE EVEN DYEING OF PIECE-GOODS MADE OF OR CONTAINING POLYACRYLONITRILE FIBRES WITH CATIONIC DYESTUFFS

摘要

Procedure for the uniform staining of piece goods based on polyacrylonitrile fibers or their mixtures with other natural or synthetic fibers with the use of cationic dyes according to the method of impregnation and treatment with steam under pressure, characterized in that the textile material is impregnated at room temperature with an impregnation treatment aqueous bath, which in addition to an acid and one or more cationic dyes also contains an excess anionic dispersing agent in relation to the molar amount of the dye, and then the so-treated cloth, in order to effect the fixation of the dye, it is subjected to the action of steam under pressure at 0.1 to 0.6 atmospheres gauge for a time of 5 to 15 minutes. (Machine-translation by Google Translate, not legally binding)