Verfahren zum kontinuierlichen Faerben oder Bedrucken von aus Polyacrylnitril bestehenden Textilmaterialien mit basischen Farbstoffen

摘要

Polyacrylonitrile material is dyed by impregnating with an acidic aqueous solution containing a basic dyestuff and a water-soluble salt of an acid having a pK value below 4.8 with an amino group containing compound corresponding to the formula in which X, Y and Z independently stand for H, OH, Cl, CN, COOH, CONH2, O-alkyl, CO-alkyl, COO-alkyl, CONH-alkyl, CON(alkyl)2, -NH2, NH-alkyl, N(alkyl)2, NHCO-alkyl, NHCONH2, NHCONH-alkyl, or NHCO N (alkyl)2 wherein alkyl is an alkyl group of 1-18 carbon atoms, T is -O-, -CO-, -CONH-, -NH-, -NHCONH- or -NHCO-, and k, l, m, n, and p are integers 0 to 18, their sum being at least 2, the material being finished by a thermal aftertreatment. Acids of pK below 4.8 are hydrochloric, sulphoric, nitric, formic and acetic acid and compounds of the above formula are diethylene-trianine, triethylene-tetramine, diethanolamine, triethanolamine, nitrito-triacetic acid, di-(b -cyanoethyl)-amine, methyl-di-(b -cyanoethyl)-amine, amido-amines, amino-urea of formul and NH - CO - NH - CH3 also heto-amine of formul Surface-active polyglycol ethers and/or carboxylic acid amides free from amino groups may also be included in the dyebath.