TECHNOLOGY FOR DYEING TEXTILE MATERIALS MADE OF NATURAL FIBERS BY NATURAL DYE WITH NON-DRESSING BIOCHEMICAL METHOD Russian patent published in 2019 - IPC D06B9/02 D06P1/46 

FIELD: technological processes.

SUBSTANCE: invention relates to a method for dyeing textile materials from natural fibers with natural dyes with a non-dressing biochemical method. Object of the invention is to develop an effective method for dyeing natural textile materials from natural fibers with the natural dyes, in order to reduce the load on the environment, increase the color intensity, preserve the color gamut on textile materials, reduce the consumption of the dye by increasing the degree of fixation. Natural materials are used as the dye: barberry fruits (dye – berberine), chili (dye – a group of carotenoids) and chalk (dye – anthocyanidins or aglycons), stems and leaves of nettle (dye – chlorophyll). Method includes extracting the feed, fermenting the dye solution with enzymes, dyeing, washing. Non-dyeing technology for dyeing textile materials, which involves the use of enzymes that gently degrade the molecule of natural dyes, reducing them in size and thereby increasing diffusion in the interior of the fiber.

EFFECT: proposed method makes it possible to increase the intensity of coloring, to reduce the consumption of the dye, to ensure environmental safety of the environment and to increase the strength of the original paint obtained on the natural fiber.

1 cl, 3 tbl