JPS6285079A - Modification treatment of silk - 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] 3. 31 of the invention! [Industrial Field of Application 1] The present invention relates to a method for modifying silk, particularly a method for modifying silk thread that improves quality by imparting wrinkle resistance, shrink resistance, color resistance, etc. to silk fibers. Jri! 130-J on method.

Nil-related technology and its problems 1 When looking at silk fabric as actual clothing, it is denied that it has disadvantages such as being easily wrinkled, easily losing its shape, and easily yellowing due to sunlight. Can not. In order to remove these defects of silk, a wide variety of chemical processing methods have been researched, but even if some of these defects can be removed, the treatment will not remove the inherent advantages of silk. They are often damaged or difficult to employ industrially.

For example, a processing method using an epoxy compound is known that has the possibility of Amakawa formation, but in this case, for example, the method using an alkali catalyst proposed in Japanese Patent Publication No. 38-25198, Silk fibers have the disadvantage of becoming brittle and yellowing due to the need to undergo high-temperature heat treatment J■1 at 110 to 160°C at 'l'F. In the method using a neutral salt catalyst, the problem of embrittlement of the silk material hardly occurs; !!Since it is a method called "Ruru", it is not suitable for industrial-scale processing, especially textile processing, and has the n points of being very expensive in terms of chemical costs.

[Objective of the Invention] The present invention was obtained as a result of research into methods of applying epoxy compounds in view of the above circumstances, and provides an inexpensive and simple method for modifying silk that can overcome the above-mentioned drawbacks. J Ru with the purpose of doing.

[Summary of the Invention] The outline of the present invention for achieving the above object is to add a polyhydric alcohol-based epoxy compound represented by the following general formula, (in the formula, n -1 to 9, R=H, CI+3 theal) to silk thread. A silk thread is impregnated with an aqueous solution containing a compound and an alkali metal hydroxide or an alkaline salt of an alkali metal.
By leaving silk at room temperature with 0.00% remaining, it is possible to process the silk without losing its inherent advantages and without causing brittleness or yellowing.

[Embodiment 1 of the Invention The present invention provides silk thread with the following general formula, (wherein, R = H, CI3T al)
A silk thread is impregnated with an aqueous solution containing a polyhydric alcohol-based epoxy compound represented by
This is done by leaving 1 u of water at room temperature with 95% distillate at a ratio of 0%.

As the polyhydric alcohol-based epoxy compound, the diglycidyl ether of polyethylene glycol or polypropylene glycol (polymerization degree of 9 or less), which has a high solubility in water, is most useful. It is preferable to use about 5 to 20% of melon. In addition, when the polyhydric alcohol-based epoxy compound is not completely dissolved in water, a solvent such as a lower alcohol may be added in the smallest possible amount. In the examples of the present invention, the alkali metal hydroxide serving as the reaction catalyst is preferably puttrium hydroxide or potassium hydroxide.
In addition, as alkaline salts of alkali metals, ■ carbonic acid,
Carbonic acid, carbonate, thorium salt or potassium salt is preferred, and it is desirable to select one of these and use it in an amount of 5 to 50%, preferably 10 to 25%, based on the weight of the epoxy compound. In addition, in the example of Book 5, silk fibers were impregnated with the treated aqueous solution, and the retained moisture content was 30 to 300.
%, preferably 75 to 150%, and then cooled in a sealed state to prevent moisture from evaporating for at least 8 hours or more, preferably 12 to 2011%. Modification of the silk is achieved by keeping it at room temperature for a period of time. However, there is a risk that silk will become brittle if the room temperature exceeds 30°C, so care must be taken in the summer.

This modification has significantly improved the performance of chopsticks, including wrinkle recovery and
It has good abrasion resistance, 1IiJ chemical resistance, light resistance, dyeability, etc., and by improving these properties, it has even higher value.
Silk products with high j are valued at 1 SI.

Next, processing examples according to the present invention will be explained using specific examples.

Example 1 Refined 140,000 Habutae was treated with the following tetraethylene glycol diglycidyl ether.
120 parts Seth 421 central acid No 1~
Rium 50 parts water
880 i! i11
Passing through an aqueous treatment bath consisting of V, by mangle 8
The liquid was squeezed to 5%. Next, seal this habutae in a plastic bag,
To! Leave at (20°C) for 16 hours, then wash with water. Soap in a 3% soap bath at 80°C and wash with water.

Dry.

The performance of the processed habutae obtained by 1q was as follows.

Person 1 JIS L-1096B (1) [Nsan t-method (kei → hook) (2) Hartle-puri r (3)' JIS L-1030 (Jia WLFIQ) I
-Rium) (4) Compared to unprocessed silk, wrinkle recovery (dry and wet) and chemical resistance are shown in table 1 under the naked eye under sunlight.

It is recognized that the h4 optical properties are significantly improved.

Saneura Example 2 140,000 yen of refined Habutae was mixed with the following: 100 parts of propylene gellicol diglycidyl ether 100 parts of potassium hydroxide 4 parts of water

An aqueous solution of 900 parts was passed through a bath and drained to 85% by means of a mangle. Next, this habutae was sealed in a plastic bag, and washed with water, soaped, and washed with water at room temperature (20°C) for 18 times.

Dry. The performance of Hajisho obtained through this process was as follows.

Table 2 The test method is the same as in Table 1. As shown in Table 2, *@resistance, M4 mulberry quality.

Significant improvement in light resistance.

Example 3 Scoured plied silk yarn (27+I/I X3.600
1500-r/+n) to the following: 150 parts ethylene glycol diglycidyl ether 50 parts sodium carbonate

The sample was immersed in a treatment bath containing 850 parts of an aqueous solution for 3 minutes, and centrifugally dehydrated to a moisture content of 120%.

Put this in a plastic bag and leave it at room temperature (22℃) for 16 hours, then wash with water, soap, and rinse with water.

Dry. The processed and unprocessed silk threads were dyed in a bath of 4% blue dye (Ranil Brilliare 1 to Blue 0) and 5% ammonium acetate for 30 minutes at 95°C.

The properties of the processed silk thread thus obtained were as follows.

Table 3 (1) (2) JI determined from reflectance at 600 mm wavelength
SL-0849 (3) Thread friction tester (load 209) (4) As shown in the results in Tensilon Table 3, the processing of the present invention dyes silk a deeper color and improves the color fastness. Recognize. Also, strength J3 and abrasion resistance were improved.

[Effects of the Invention] The present invention provides silk thread with a polyhydric alcohol-based epoxy compound represented by the following general formula (in the formula, "1-1 to 9.R-H, CHs") and an alkali metal hydroxide. The structure is such that the silk thread is impregnated with an aqueous solution containing an alkaline salt of a substance or an alkali metal, and is left at S! temperature with the aqueous solution remaining in the silk thread at a ratio of 30 to 300%, so no heating is required. It is now possible to chemically react polyhydric alcohol-based epoxy compounds to silk molecules under mild conditions, and this inexpensive and simple processing method prevents embrittlement, yellowing, etc. while preserving silk's original advantages, resulting in high commercial value. We can provide silk products, and the effect is great.

Claims (2)

[Claims] (1) Silk thread has a polyhydric alcohol-based epoxy compound represented by the following general formula, ▲mathematical formula, chemical formula, table, etc.▼ (in the formula, n = 1 to 9, R = H, CH_3), A method for modifying silk thread, which comprises impregnating the silk thread with an aqueous solution containing an alkali metal hydroxide or an alkaline salt of an alkali metal, and leaving the silk thread in a state where the aqueous solution remains in the silk thread at a ratio of 30 to 300%. (2) The method for modifying silk thread according to claim 1, which comprises leaving the silk thread at room temperature.