DE636638C - Process for matting dark colored glossy fabrics - Google Patents

Description

Process for matting dark colored, glossy fabrics It has been found that glossy, dark-colored textile fibers, in particular Artificial silk, an intense, durable and non-abrasive dark matt finish can, by precipitating surface-active cations on the fibers, so-called cation-active salts with tannins or wood extracts and with Iron salts causes.

The previously known methods for matting light-colored textiles are not transferable to the matting of dark colored fabrics. The older procedures consist, for example, in the fact that a precipitate is produced on the fiber, the components of which are a high-molecular, cation-active quaternary ammonium salt, a tanning agent and optionally a tannin-fixing agent or z. B. a tanning agent and a metal salt such as alumina or tin chloride. This rainfall give z. B. on black pre-dyed goods no sufficiently deep matting or a gray covering. As far as these processes work with mineral acid tin chloride solutions, they are also disadvantageous because of the risk of fiber damage. All of these drawbacks are avoided by working according to the invention.

The process can expediently be carried out in such a way that the goods are soaked with a solution that contains the cationic substance and the iron salt contains. Then it can be spun off or pressed, if necessary also dried will. This is followed by treatment in a bath containing a solution of the tanning agent or contains colored wood extract. It is also possible to add the iron salt only after the Let treatment with the tanning agent or wood extract solution take effect. the however, the strongest matt effects are combined with the use of iron salts achieved with cation-active substances in the first treatment bath.

The mattings achieved are rub-fast and wash-fast; matted like that Fibers can even be soaped at elevated temperatures, and not only the matting does not suffer any damage, but in many cases also a depression of the hue occurs.

The color of the matting pigment depends on the type of used Tannin or colored wood extract. If the pre-staining is black, the second bath z. B. the following tannins can be used: chestnut extract, Valonea extract, sumac, Gallus extract. In the case of dark green pre-coloring, the following tannins or wood extracts are used Considered: gambir, quebracho, fiseth wood extract, yellow wood extract. With dark blue Pre-staining is suitable for post-treatment of blue wood extract, with dark red pre-staining Redwood extract. All of the above-mentioned extracts can be mixed for shading. Even artificial tannins are useful. = @ -.

Suitable cation-active substances are, for. B. the 'quaternary high molecular weight ammonium oil ;. Phosphonium compounds, the hochmolel @ ü laren ternary sulphonium compounds, the body of the type of asymmetrical oleyldiethyläthvlendiamins, also the isoureas and isothioureas substituted by high molecular weight organic radicals, the addition products of high molecular weight alkyl and. Aryl halides on hexamethylenetetramine and high molecular weight alkyl and aryl guanidines. Examples: i. Strands of viscose rayon, dyed black in the usual way, are treated for 10 minutes at 30 to 40 ° in a bath containing 10 g / 160% dodecylpyridinium sulfate and 3 g / l ferric chloride. The product is then squeezed out and then treated for 5 minutes in a bath that contains 5 g / l chestnut extract. The temperature of this bath is also kept between 30 and 40 °, since the higher the temperature of this bath, the larger the pigment and the better the matting effect. The goods are then appropriately rinsed with hot water or soaped with a solution of 10 g / l sodium soap at 80 °, whereby the -.-sch@varze color tone deepens, while the matting remains unchanged.

'a.Blue-dyed viscose artificial silk in a strand is mixed with a solution of 10% 60% dodecylpyridinium bromide and 3% 1 ferric chloride at 30 to 40% Treated for minutes, squeezed and then 5 minutes at 3o to 40 ° all in one Bath treated, which contains 5 g / 1 blue wood extract. Then at 80 °, as in Example i described, soaped.

Claims (1)

PATENT CLAIM: Process for matting -glossy, dark-colored Textiles, in particular rayon, characterized in that one is on the Fibers Precipitation of cationic salts with tannins or wood extracts and produced with iron salts and then optionally the fibrous materials at increased Temperature, soaps.