JPS6081369A - Processing of silk cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a processing method for improving the quality of silk fabrics, which involves reacting polyhydric alcohol-based epoxy compounds with silk fabrics under mild conditions. In particular, the purpose is to improve the practical performance of silk fabrics.

When silk fabric is used as a material for Western clothing, it is expected that it will produce a higher quality finished product due to its elegant luster and supple texture, characteristics that cannot be obtained by kneading other types of fibers. Silk fabrics have some shortcomings in their practical performance, and in particular, they tend to wrinkle easily, lose their shape easily, become discolored and brittle when exposed to sunlight, and tend to become fluffy due to friction. It cannot be denied that there are some drawbacks.

In order to remove these defects, various chemical treatment methods have been studied, but there have been few successful cases, and even if some of these defects can be removed, the treatment may be insufficient. In many cases, the original advantages of silk fabrics have been lost, or it has been difficult to put them into practical use commercially.

As a practical method, one using an epoxy compound is considered to be effective for this purpose, but even in such a case, for example, a method using an alkali catalyst (see Japanese Patent Publication No. 38-25198) However, since the treatment is carried out at high temperatures using caustic soda or soda carbonate as a catalyst, the silk fabric becomes brittle and discolored, making it impossible to put it to practical use.

In addition, a method using a neutral salt catalyst (Japanese Patent Publication No. 52-381
61), there are few problems of embrittlement and discoloration of silk fabrics, but since the process is carried out in an organic solvent,
It must be said that it is unsuitable for large-scale processing, especially large-scale processing in the form of textiles, and it has not yet been put to practical use.

The present invention took this situation into consideration, reconsidered the method of applying epoxy compounds, and obtained a method for processing large quantities of textiles. That is, in the present invention, a silk fabric is filled with an aqueous solution of an epoxy compound and an alkali metal salt of a monocarboxylic acid.
Afterwards, we have discovered that by applying moist heat treatment, the practical performance can be improved without losing the original luster and texture of silk, whether it is a punch type or a continuous type.

In the present invention, suitable alkali metal salts of monocarboxylic acids serving as catalysts include sodium, potassium or lithium salts of acetic acid, zolopionic acid, butyric acid, etc.
and 2 to 20 inches of epoxy compound, preferably US~
Most preferably, 10% is used. These catalysts easily dissolve in water and exhibit weak alkalinity, and even if they coexist with epoxy compounds in an aqueous solution, they do not react with the epoxy compounds at room temperature. Accelerates the reaction of epoxy compounds. Therefore, there is an advantage that the epoxy compound is less consumed in the processing solution and the processing effect can be controlled by the conditions of the wet heat treatment.

In addition, as the epoxy compound used in the present invention, polyhydric alcohol-based epoxy compounds are useful, and among them, glycidyl ether of ethylene glycol, which has a high solubility in water, is the most useful. The best results are obtained when using about 15 to 28 coefficients.

After filling the silk with the treatment solution and removing the liquid at a squeezing rate of 50 to 1 DOV, preferably 70 to 90%, it is pre-dried at a low temperature of 60 to 70 degrees Celsius, and then dried in saturated steam for 10 to 60 minutes. Through heat treatment, improved performance of silk is achieved. The heat treatment temperature is 100 degrees C and the maximum is 110 degrees C-i! However, using a higher temperature than that is suitable, and although the processing time can be shortened, it is not desirable because it causes discoloration of the silk.

Particularly remarkable improvements in practical performance due to improved performance are evident in wrinkle recovery properties, light resistance, strong alkali resistance, and dyeability, and improvements in these properties will lead to the creation of more valuable Western clothing products. It is clear that you can get the full moon.

Next, some examples of processing by JJ will be described as specific examples. Example 1: Scour Habutae with 14 momme weight, dipped in a treatment solution consisting of 100 parts of Ebiol E, 150 parts of sodium globionate, 15 parts of water, 1 s of water, and squeezed to about 85% with a mangle. and lightly pre-dry at 60 degrees C.

Wash, dry and lightly iron.

The performance of the processed product thus obtained was as follows. The table below shows the numerical values in comparison with unprocessed products.

Sample 14 Habutae with momme Processed according to the invention Increased weight of unprocessed product
(%) 12.8 - (a) Wrinkle recovery angle Dry 291 20B (a) Wet 286 205 (b) Tear strength <g) 1280 1400 (C)
Bending resistance (dish) 77 78 (d) Hypochlorite solubility 38 10n Sunlight yellowing (3 days) + 110++ The symbols a to d in the table indicate the following contents.

a. - Sensand method (longitude and latitude) b - ° Elmentorff method C.. Hartloop method d. - JIS LID 30 (same for each table below) Example 2 14 Momme Habutae was refined and Epiol G-100 (glycerin type) 150 parts Sodium propionate 15 parts Water 10 [10 parts] Sprinkle the solution into a treatment solution, squeeze the solution to about 85φ with a mangle, and lightly dry at 60 degrees Celsius.

Next, this habutae was heat-treated at 100 degrees C for 15 minutes, and
After treating with a 6% soap solution of degree C, wash with water, dry, and lightly iron.

The performance of the processed product thus obtained was as follows. The table below shows the numerical values in comparison with unprocessed products.

Sample 14 Habutae with momme Invention strength [Weighing Physical strength 1 Weight increase (%) 121 - (a) Wrinkle recovery angle Dry 280 208 (a) Wet 271 205 (b) Tear strength (g) 1290 1400 (c) Bending resistance (mm) 76 78 (d) Hypochlorite solubility 65100 Sunlight yellowing (3 days) + -1-+++14 Habutae with a momme is refined and mixed with Evolai l-70P (propylene glycol type) 15
It is immersed in a treatment solution consisting of 0 parts potassium propionate, 15 parts water, i ooo parts, squeezed to about 85% with a mangle, and lightly pre-dried at 60 degrees Celsius.

Next, this habutae was heat-treated at 100 degrees C for 15 minutes, and
After treating with 6% soap solution at degree C, wash with water, dry and lightly iron.

The performance of the processed product thus obtained was as follows. The table below shows the numerical values in comparison with unprocessed products.

Sample 14 Habutae with momme Processed product according to the invention Weight increase in unprocessed product (%) 12.0 - (a) Wrinkle recovery angle Dry 284 208 (a) "Wet 274 205 (1)) Tear strength (g) 1272 1400(C)
Bending resistance (mm) 76 7B (d) Hypochlorite solubility 38 10 (] Sunlight yellowing (3 days) -1-10+10-1-+Example 4゜14 Momme Habutae scouring , this is called Epiol E-1[]0 (ethylene glycol type)
It is immersed in a treatment solution consisting of 150 parts potassium propionate, 15 parts water, and 100 parts, squeezed with a mangle to about 85 parts, and lightly pre-dried at 60 degrees Celsius.

Next, this habutae was heat-treated at 100 degrees C for 15 minutes, and
After treating with a grade C soap solution, wash with water, dry, and lightly iron.

The performance of the processed product thus obtained was as follows. The table below shows the numerical values in comparison with unprocessed products.

Sample 14 Habutae with momme Processed product of the present invention Weight increase of unprocessed product (chi) 12.8 - (a) Wrinkle recovery angle Dry 290 208 (a) Wrinkle recovery angle Wet 287 2 [15Φ) Tear strength (g ) 1
283 1400(C) Bending resistance (mm) 77
78(d) Solubility of hypochlorite 39 100 Sunlight yellowing (3 days) 10++++++ Example 5 A 14 monme finely divided double layer was refined, and this was mixed with Epiol G-100 (glycerin type) 150 parts Potassium propionate 15 parts It is immersed in a treatment solution consisting of 1000 parts of water, squeezed with a mangle to about 85 parts, and lightly pre-dried at 60 degrees Celsius.

Next, this habutae was heat-treated at 100 degrees C for 15 minutes, and
After treating with a grade C 6 soap solution, wash with water, dry, and lightly iron.

The performance of the processed product thus obtained was as follows. The table below shows the numerical values in comparison with unprocessed products.

Sample 14 Habutae with momme Processed product of the present invention Weight increase of unprocessed product (φ) 12.1 - (a) Wrinkle recovery angle Dry 281 208 (a)〃 Wet
270 205 (b) Tear strength (g) 1288 +400 (C
) Bending resistance (nn++) 75 78 (d) Hypochlorite solubility 37 100 Sunlight yellowing (3 days) 10++ 10+ It is clear that the product obtained by the method of the present invention has a
It has excellent wrinkle recovery properties, light resistance, and alkali resistance, with no loss in tear strength and flexibility.

Similar good results were also obtained when using glycerin-based epoxy compounds and propylene-based epoxy compounds other than ethylene glycol-based epoxy compounds.

patent applicant Ikeizumi Textile Co., Ltd.

Claims (1)

[Claims] A method for processing silk fabric, characterized by immersing silk fabric in an aqueous solution of a polyhydric alcohol-based epoxy compound and an alkali metal salt of a monocarboxylic acid, removing the liquid, and then subjecting the fabric to moist heat treatment.