SU715676A1 - Method of rendering textile materials water-repellent - Google Patents

Description

The invention relates to textile finishing, in particular to the technology of tadrofobna finishing textile materials. A known method of hydrophobization of textile materials by treating with a solution of sodium alkylsiliconate using K1 catalysts — salts of heavy metals. 111 The treatment is carried out in a double-dip process because the salts of heavy metals are not stable in the presence of alkaline aqueous sodium alkyl silicate and precipitate out of sediment. First, the textile material in the first bath is impregnated with an aqueous solution of the catalyst (nickel or copper salts) at a concentration of 30-50 g / l and then, after pressing and drying in the second bath, it is impregnated with sodium methyl or ethyl silicate with a concentration of 50-100 g / l. After drying the textile, the material is washed and dried. : This method produces materials with fairly high hydrophobic properties, but it finds practical use in orpaiipieftHOe because of the complexity of the technologies about wood. The aim of the invention is to simplify the technology of the Hydrophobization process of textile materials with aqueous alkaline solutions of sodium alkylsilonates, namely the implementation of the technology of finishing in the same way instead of the two-way method of existing; The goal is achieved; due to the fact that, when the textile materials are water-repellent, their treatment with an aqueous solution of sodium alkylsilonate with a concentration of 60-100 g / l using a catalyst and followed by drying is carried out with a solution of sodium alkylsiliconate containing 5-10 g / l of zirconyl acetate ammonium, potassium or sodium. Example 1 A cotton cloth is impregnated on a pad with an aqueous solution containing sodium ethylstand and a catalyst — ammonium or sodium zirconyl acetate — squeezed, dried at 80-100 ° C and the water absorption is checked. Formulations of impregnating solutions and data On the water absorption of the treated fabric are given in the table.

Components of the composition of sodium ethylsiliconate zirconyl acetate ammot sodium zirconylacetate

The water absorption of the fabric after wetting for 1 h,% The water absorption of the fabric, finished by the known technology (two-sided method) is 32%. . Example 2. In a rolled-up fabric consisting of a viscose stitch and cotton yarn, the padding is treated with an aqueous solution containing sodium ethyl silicate at a concentration of 100 g / l and circoshh: ammonium acetate at a concentration of 10 g / l. Then the cloth is squeezed, dried and the water is absorbed. The water absorption of the finished web, when wetted in water for 1 hour, is 76% (the water absorption of the raw web is 252%). Example 3. Cotton fabric is treated on a pad with an aqueous solution of sodium methylsiliconate (75 g / l) and zirconylacetate. ammonium (10 g / l), squeeze and dry. After drying, the water absorber of the trimmed samples is determined. The water absorption of the samples is 26.5% and is at the level of the water absorption of the samples, finished by the known two-seamy method.

100 10

100

100

five

ten

To 1 l To .1 l To 1 l To 1 l

26

29

Claims (1)

34 Thus, the proposed method allows the finishing of textile materials in a single-sided manner, as a result, the finishing technology is simplified and the possibilities for its wide application are expanded. The method of hydrophobization of textile materials by treating them with an aqueous solution of sodium alkylsiliconate with a concentration of 60-100 g / l using a catalyst and followed by drying, characterized in that, in order to simplify the technology, the treatment is carried out with a solution of alkylsiliconate, sodium containing 5-10 g / l of catalyst - ammonium zirconylacetate, potassium or n atri. Sources of information, appraisal into account during the examination 1. USSR author's certificate No. 145349, cl. D 06 M 11/04, 1961 (prototype).