JPS6325110B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a resin processing method for silk fabrics that easily imparts properties such as flame retardancy, stain resistance, antistatic properties, wrinkle resistance, and bulkiness to silk fabrics. [Conventional technology] In recent years, in order to increase the demand for silk, research has been actively conducted to utilize silk not only for traditional Japanese clothing, but also for Western clothing. In some cases, it is more active than in Japanese clothing, and in some cases, the delicate and supple texture unique to long fibers can become a drawback. It is not easy to do so, and there have been very few successful cases to date. [Problem to be solved by the invention] The present inventor has conducted research on how to improve the performance of silk fabrics made using Japanese-style techniques through resin processing to make them suitable for Western-style clothing, and has succeeded here. This is what I saw. That is, by processing N-methylol acrylamide or N-methylol methacrylamide as a main component and using a tin compound represented by the following formula as an auxiliary agent and a reaction catalyst, defects or defects can be eliminated in silk fabrics. They discovered that various performance characteristics can be significantly improved. General formula M ₂ SnCl ₆ (where M is K or NH ₄ ). [Means for solving the problem] N-methylolacrylamide is widely known as a processing agent for cellulose fibers, but when applied to silk fibers, it has no catalytic effect as a condensation reaction catalyst for cotton processing. is weak, the reaction of the N-methylol group does not proceed much, and the desired modification effect cannot be obtained. However, it is said that if stannic chloride is used in combination with this, the reaction can be considerably accelerated and a considerable effect can be achieved. However, since stannic chloride itself is strongly acidic in an aqueous solution, it has the disadvantage of significantly damaging silk fibers during heat treatment.Additionally, if this strong acidity is neutralized to some extent, the tin compound in an aqueous solution This processing method was not successful because it had the disadvantage of causing hydrolysis and losing the reaction effect (Textile Industry Research Institute Research Report, No. 79, P17 (1966). The pink salt used in the present invention is a dichloride salt. Although it is weakly acidic compared to tin, it has high stability in aqueous solutions and has a large effect of accelerating the thermal condensation reaction of N-methylol groups.Furthermore, it is used for the purpose of removing unreacted drugs after treatment. During the washing process, pink salt, like stannic chloride, becomes a water-insoluble tin salt and is permanently fixed within the silk fibers, so it cannot be achieved by processing with N-methylol acrylamide or N-methylol methacrylamide alone. Not only can high performance improvements such as wrinkle resistance and bulkiness be obtained, but also flame retardancy, stain resistance, and antistatic properties can be obtained due to the contribution of the tin salt.The pink salt used in the present invention is a chlorinated salt. It is easily produced by mixing potassium chloride or ammonium chloride with a concentrated aqueous solution of stannic (Japan Seriological Journal, Vol. 36, P362 (1967)). Therefore, a treatment bath is prepared by mixing an aqueous SnCl ₄ solution and an aqueous MCl solution in advance and pouring a predetermined amount of the mixture into an N-methylol acrylamide or N-methylol methacrylamide solution, but the amount of tin (Sn) used is 20-200g per treatment bath
It is preferable that the amount is within the range of 1, and even if it is used in an amount larger than this, the modification effect cannot be expected to increase any more, and there is a risk of discoloring and damaging the silk. Also 20g/
If the amount is below, the condensation reaction will not proceed sufficiently, and the amount of tin salt fixed in the fibers will be too small, making it impossible to obtain a high modification effect. If too much N-methylol acrylamide or N-methylol methacrylamide is used, it will impair the texture and luster of silk fibers, so treatment bath 1
It is necessary to keep the amount within the range of 250 to 50 g per serving, and it is necessary to adjust the amount depending on the type of silk fabric. In this way, the silk fabric is immersed in the treatment bath for 5 to 10 minutes at room temperature, deliquified with a two-roll mangle to a squeezing rate of 70 to 100%, and pre-dried for 3 to 5 minutes at a low temperature of 60 to 70°C.
It is then subjected to dry heat treatment or wet heat treatment at a temperature of 120°C or less for 2 to 10 minutes, and finally washed with water, soaped if necessary, and finished dried. [Examples] Examples of the present invention will be described below. Example 1 150g/N- of 12 momme silk habutae (scoured)
Immersed in a treatment bath consisting of methylolmethacrylamide and 75g/ammonium hexachlorostannate at room temperature for 5 minutes, squeezing rate 90% with a two-roll mangle.
After deliquing and pre-drying at 65℃ for 5 minutes, drying at 105℃
Dry heat curing was performed for 5 minutes. This processed fabric was lightly washed with water, then soaped with 3 g/soap solution at 50°C for 20 minutes, washed with water, and dried. Table 1 shows the performance test results of this processed fabric.

[Table] From the data in Table 1, it can be seen that this processed silk has about 5% tin salt and about 10% methylolmethacrylamide condensate, which almost impairs the strength and elongation performance of the silk. It can be seen that wrinkle resistance, stain resistance, flame resistance, and antistatic properties are improved. Example 2 12 Momme silk habutae (refined) was immersed in a treatment bath consisting of 180 g of N-methylol acrylamide and 100 g of potassium hexachlorstannate at room temperature for 5 minutes, squeezed to 90%, and heated to 65°C. Pre-dry for 7 minutes,
Dry heat curing was performed at 105°C for 7.5 minutes. The test results after washing and drying in the same manner as in Example 1 are shown in Table 2.

〔Effect of the invention〕

As is clear from the above examples, the present invention improves the wrinkle resistance, stain resistance, flame resistance, and antistatic properties of silk without substantially impairing its strength and elongation performance.

Claims (1)

[Scope of Claims] 1 Silk fabric is made of N-methylol acrylamide or N-methylol methacrylamide and a tin compound (pink salt) represented by the following general formula M ₂ SnCl ₆ (where M is K or NH ₄ ) and A resin processing method for silk fabric, which comprises immersing the fabric in an aqueous solution consisting of the above, removing excess solution, and heat-treating the fabric at a temperature of 80°C or higher.