RU1828884C - Process for degumming unbleached natural silk fabrics - Google Patents

Abstract

The use of textile finishing. SUMMARY OF THE INVENTION A harsh fabric made of natural silk is boiled in a solution containing undecylenet sodium or potassium 7.3 7 7 g / l (BF C12 H 19 02 Na or C12H1902K) Soda ash 2.8 3 2 g / l (BF Na2 COz). OP-10 preparation based on ethoxylated alkyl phenols with Sv-Siu alkyl and an ethoxylation degree of 10-12 0.02-0.05 g / l and softened water up to 1 l, and then in a solution containing sodium or potassium undecylenate 2 03 -2.7 g / l, soda ash 0.20 - 0.28 g / l and softened water up to 1 l. They are treated in an aqueous solution of ammonia, first at 67 70 ° C and then at a concentration of ammonia 2 g / l and 1 g / l Wash in an aqueous solution of sodium hexametaphosphate first at 60-65 ° C and then at 30 35 ° C with a concentration of sodium hexametaphosphate 1 and 0.5 g / l Indicators of consumer properties of fabrics, the breaking load of the base is 44 kg, weft 31 kg, elongation of the base 19 5-20.2%, weft 205 29.0% shrinkage after washing, 4.7-4, 8% on the basis and 1 7-1 8% on the weft, abrasion resistance 300 350 cycles, the resistance of the threads to sliding 1 9-2 1 kgf, capillarity 6 0-6 5 cm for 5 min 2 table sl

Description

The invention relates to a chemical technology for the refinement of natural silk, namely the de-sticking of harsh fabrics made from natural silk

The aim of the invention is to improve the consumer properties of tissues and the replacement of scarce products

The goal is achieved by the method of gluing the harsh fabrics of natural silk two-stage alkaline

by boiling in softened water containing, as processing agents, in the first stage of cooking, an alkali metal salt of an unsaturated fatty acid, soda ash and an OP 10 preparation based on ethoxylated alkyl phenols containing 8-10 C atoms, with an average degree of ethoxylation of 10-12, and in the second stage, calcined soda and the specified salt of a fatty acid, and according to the invention00

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4

sodium or potassium undecylenate is used as a fatty acid salt, and cooking in the first stage is carried out at the following concentration of processing agents, g / l:

Sodium or potassium undecylenate 7.3-7.7

Calcined

soda 2.8-3.2

The drug OP-100.02-0.05,

and cooking in the second stage at their concentration, g / l:

Potassium undecylenate

or sodium 2.3-2.7

Calcined

soda 0.20-0.28

Sodium or potassium undecylenate has the formula:

(СНг) in СООМ, where M is sodium or potassium

Example 1 (prototype). Alkaline boiling (bleaching) of harsh tissue from natural alkali is carried out in two stages: first, at 94-97 ° С for min in softened water containing, g1 / l:

Oleic soap

40% 15.0

Soda ash 3,0. The preparation OP-10 0,05, and then in the second stage, cooking is carried out at the same temperature for 30 minutes at a concentration of processing agents, g / l:

Oleic soap

40% 7.5

Soda ash 1, 0 After that, the fabric is treated in an aqueous solution of ammonia with a concentration of 2 g / l, first at 67-70 ° C for 20 min, and then at 60-65 ° C for 20 min at a concentration of ammonia 1 g / l Washed at 60-65 ° C for 20 minutes in an aqueous solution containing 1 g / l calgon, and at 30-35 ° C with a calgon content of 0.5 g / l,

In Examples 2-4, the bleaching of harsh tissues is carried out by the method of the invention.

The compositions of the cooking solutions are shown in table 1 (cooking conditions are the same as in example 1) indicators of consumer properties of silk fabrics - in gabl, 2.

Thus, as follows from the data

tab. 2, when using the method according to the invention, an improvement is achieved in a set of indicators of consumer properties of the treated fabrics: shrinkage after washing is reduced, the fabric has an increased resistance to abrasion and spreading of threads.

The invention also allows the replacement of oleic soap with a cheaper available product - potassium or sodium undecylenate, which does not use vegetable or puppet oil used in the preparation of oleic soap

Claims (1)

The claims The method of decalcifying severe fabrics from natural silk by two-stage alkaline cooking in soft water containing alkali metal salt of unsaturated fatty acid, soda ash and OP-10 preparation based on ethoxylated alkyl phenols containing 8-10 atoms in alkyl as the first stage of cooking carbon, with an average degree of hydroxyethylated 10-12, and in its second stage, soda ash and said fatty acid salt, characterized in that. that, in order to improve the consumer properties of tissues and replace scarce products, sodium or potassium undecylenate is used as a fatty acid salt and cooking in the first stage is carried out at the following concentration of processing agents, g / l Sodium undecylenate or potassium 7.3-7.7 Calcined soda 2.8-3.2 The drug OP-100,02-0,05 and cooking in the second stage at their concentration g / l: Potassium or sodium undecylenate 2.3-2.7 Soda ash 0.20-0.28. Table 1 table 2