DE639199C - Process for dyeing blended fabrics made from vegetable and synthetic fibers - Google Patents

Description

Process for dyeing mixed fabrics of vegetable and artificial fabrics Fibers It has been found that when dyeing blended fabrics made of vegetable and artificial fibers with substantive dyes that contain acidic salt-forming groups contain, can achieve particularly even and deep colorations if you use the Table fabric with organic compounds. the tetravalent sulfur and at least a higher molecular weight aliphatic radical, but no sulfonic acid group in the molecule contain, pretreated and then colored in the usual way. For example, is suitable Dimethylcetylsulfoniumhvdroxvd. MethvläthvloctodecNvlsulfoniumchlorid, the methvlsulfuric acid Salt of montanyl dimethyl sulfonium hydroxide.

@ 'm a particularly even absorption of the sulfonium compounds To achieve, it is often advantageous to combine the sulfonium compounds mentioned to use with dispersants or treasure colloids. A1s Dispcrgiermitt @ l or Protective colloids come into consideration, for example, sulfuric acid esters of higher molecular weight aliphatic alcohols, higher molelcure true aliphatic sulfonic acids, sulfonation products of mineral oils, condensation products of carboxylic acids or their derivatives and Oxv- or Aminoalkylsulfonsiituren or protein degradation products and the salts of named compounds. also Stul @ itc @ lluloseablauge. Come as suitable additives also the reaction products of organic compounds, the hydroxyl, carboxyl or have amino groups in the molecule, with ethylene oxide in larger amounts, furthermore Glue, gum arabic or gelatin are possible.

The process is expediently carried out in such a way that the mentioned compounds or mixtures containing these compounds to the treatment bath in an amount of about 0.1 to 2 og per liter and the fibrous materials then either immediately or after drying in the usual way with substantive dyes that contain acidic salt-forming groups, colors. Obtained by the method described deep dyeings, in particular a uniform tone-on-tone dyeing is achieved.

But you can also use the vegetable or artificial fibers with the Pre-treat sulfonium bonds, then turn them into mixed fabrics, knitwear, etc. process and then dye the latter in the usual way.

Example I Cotton yarn is in a liquor containing o.5 g llethvläthylcetylsulfoniumhvdroxyd per liter contains, treated at So'C for 1 hour. strolled and dried. The yarn is then processed with viscose silk into woven or knitted goods. Q: you get such -mixed goods @ with 20% Sirius red 4l B (Schultz, color tables, 7th edition, No. 5G6) with the addition of 20% sodium sulfate for 1 hour. 9o ° C, this gives a very similar coloration.

Example 2 treats a mixed fabric made of viscose silk and cotton in a bath containing 0.4 g of the methylsulfuric acid salt of palm kernel fatty alkyldimethylsulfonium hydroxide per liter contains, for about 1 hour at 70 ° C. The fabric is then spun lund then with 2.5% triazole dark blue (Schultz, dye tables, 7th edition, number 3g3) Colored with the addition of 20% sodium sulfate for 1 hour at 90 ° C. You get in this way a mixed fabric, whose cotton and rayon consist of evenly are colored in deep rusty blue tones.

Claims (1)

PATENT CLAIM: Process for dyeing and printing blended fabrics made of vegetable and artificial fibers, characterized in that the mixed fabrics with organic compounds, the tetravalent sulfur and at least one higher molecular weight aliphatic radical, but not contain any sulfonic acid groups in the molecule, if appropriate with the addition of dispersants or protective colloids. pretreated and then colors in the usual manner with substantive dyes. the acidic salt-forming groups contain.