SU1305221A1 - Method of dyeing cellulose-containing textile materials - Google Patents

Abstract

The invention relates to the dyeing and finishing production, in particular, to the method of dyeing celite: lylozosoderzhaschee textile fabrics; by vat krisditel by using ethanolhydrazine in the dyeing bath. The method allows to increase the technological process due to elimination of the step of steaming the colored material or using molten metal in the dyeing process, as well as reducing the consumption of chemical materials due to excluding the reducing agent, alkali and textile auxiliaries from the dyebath. At the same time, the coloring strength properties are maintained. Table I 00 about eaten to IsD

Description

1130

The invention relates to dyeing and dyeing production, in particular to dyeing by vat dyes.

The aim of the invention is to simplify the process and reduce the consumption of chemical materials while maintaining the strength properties of color.

Example I. A solution is prepared containing 15 g / l of a vat of bright green C in anhydrous ethanol hydrazine by introducing a dye and ethanol hydrazine and heating the solution with stirring until the dye dissolves. Severe cotton fabric Vidpocheink soaked for 5-8 with a dye solution at lOO-lBO C, maintained. For 15-20 seconds in air (a sunflower), it is washed with water at a temperature of 20-40 ° C, oxidized, with hydrogen peroxide (1-2 g / l), subjected to soap treatment with Novost (I- 2 g / l), washed with water temperature c and dried.

Example 2. A solution is prepared containing 10–15 g / l vat golden yellow LC, 30% (based on total solvent) water and 70% ethanol hydrazine by injecting dyes into a solution of ethanol hydrazine in water and heating the solution to 100–130 ° C with stirring until complete dissolution of the dye. Viscose Staple12

it is impregnated onto the fabric with the dye solution at 100-130 ° C, pressed, held for 15–20 s in air, washed with water at 20–40 ° C, oxidized with hydrogen peroxide (1-2 g / l), processed by Novost (1 2 g / l), washed with water at a temperature and dried.

B table shows the technological parameters of the proposed and known methods.

Claims (1)

Invention Formula A method of dyeing cellulose-containing textile materials by impregnating a dye-based dye dye composition at elevated temperature, oxidizing it with an aqueous solution of hydrogen peroxide, mass processing, washing and drying, characterized in that, in order to simplify the process and reduce the consumption of chemical materials while maintaining color strength indicators, as a dye composition, a solution of vat dye in anhydrous ethanol-hydrate or in a mixture of 70-90 wt.% the latter with 10-30 wt.% water is used. and they are impregnated at SOO-PO C for 5-8 hours, followed by exposure to I5-20 with air and washing with water at 20-40 C.