JP2007046215A - Modification process for polyamide fiber materials - Google Patents

Abstract

[PROBLEMS] Conventionally, in the case of a synthetic fiber, in the case of a synthetic fiber, a water-soluble protein is insolubilized and physically absorbed and retained by the fiber as a known document for the purpose of developing a functional fiber by adding a water-soluble protein to the fiber. There are many known methods for coating.
However, polyamide fiber materials processed by these methods have problems in texture, durability, workability during processing, instability of chemicals, quality stability, and the like.
The present inventor has solved various environmental, safety and health problems, and as a result of conducting research on practical application of a modification processing method for a polyamide-based fiber material that is gentle to the skin, the present inventors have found that a polyhalogenopyrimidine compound and a water-soluble compound We found that we can obtain a polyamide fiber material with excellent moisture absorption and feel and excellent wearing comfort by heating and reacting with a weakly alkaline protein and heating it with weak acidity as necessary. It was.
[Selection figure] None

Description

Detailed Description of the Invention

The present invention relates to a protein of a polyamide fiber material, characterized by using a polyhalogenopyrimidine compound as a crosslinking agent, causing a polyamide fiber material and a water-soluble protein to undergo a crosslinking reaction, and modifying the polyamide fiber material. It is a modified processing method.
More specifically, the present invention uses a polyhalogenopyrimidine, particularly a pyrimidine compound composed of polychloropyrimidine, as a crosslinking agent for imparting functionality such as moisture retention, wearing comfort and texture to the polyamide fiber material. , Water-soluble animal and plant proteins such as sericin, silk fibroin, collagen, keratin, soy protein, corn protein and polyamide fiber material coexist and heat treatment with weak alkali as the primary treatment, if necessary In this method, the polyamide fiber material is modified with a protein by heat-treating the polyamide fiber material as a secondary treatment by heat treatment.

In recent years, with the improvement of quality of life and increasing interest in environmental, safety and health issues, shape memory fibers, flame retardant and flame retardant fibers, UV shielding fibers, insect and mite fibers, antibacterial fibers and deodorant fibers Functional fibers such as high-texture / high-quality fibers and skin damage prevention fibers have been developed one after another, attracting the attention of the textile industry. On the other hand, in order for the Japanese textile industry, which is being overwhelmed by China, to survive and coexist with China, it is considered indispensable to develop functional fibers with added value to the fibers. Development and commercialization of this is an extremely important issue for the Japanese textile industry.
Under such circumstances, animal and plant proteins, such as sericin, silk fibroin, collagen, keratin, and soy protein, are added to the fiber material to provide a skin-friendly process, that is, a feeling of good texture and absorption.・ Processes that provide functions such as moisture release, deodorant, antistatic, antioxidant, ultraviolet shielding, antibacterial, and skin damage prevention have been studied, and some have been put into practical use.

There have been many researches on the practical application of processing methods for imparting animal and plant proteins to fibers. However, there are still merits and demerits, and there is still room for research on processing methods to impart animal and plant proteins that are durable and effective. Remains.
For example, Japanese Patent No. 2969581 discloses a patent for improving moisture absorption and desorption by physically adding sericin to a fiber by applying water-insolubilized sericin to a hollow hole of a polyester synthetic fiber having a hollow hole. Is published. Similar patents are also disclosed in Japanese Patent No. 2969582, Japanese Patent Application Laid-Open No. 6-17372, Japanese Patent Application Laid-Open No. 9-31847, Japanese Patent Application Laid-Open No. 9-158048, and the like.
As a related research report, Journal of Textile Society of Japan (Fiber and Industry) Vol. 57, no. 10 (2001) P.I. 279 describes that the functionality of sericin has a moisturizing effect, an antioxidant ability, and a skin disorder suppressing effect, and the effect has been demonstrated by the processing method of the patent.

These are examples of polyester fibers, but it is necessary to produce fibers having special hollow holes, and sericin is only physically held, so that the fastness to washing is not good.
Japanese Patent No. 2588445 discloses a modified processing method characterized in that a synthetic fiber is treated with a solution comprising a sericin aqueous solution and a fixing agent as a treatment liquid. In this case, the sericin is insolubilized by chemically reacting water-soluble sericin with an insolubilizing agent, and the idea is to physically impart the insolubilized sericin to the hydrophobic synthetic fiber.
Therefore, in this case as well, there is a problem that sericin is gradually removed by washing, and for sericin insolubilizing agents, for example, aldehydes have a problem of formalin generation, and synthetic resins have a fiber texture. There is a problem of losing. In addition, cyanuric chloride is a powder and has an irritating dust scattering property. It is difficult to use in dyeing plants and is an unstable compound, so there is still room for improvement in the use of insolubilized drugs. .

Problems to be solved by the invention

The above-described processing method using water-insolubilized sericin is likely to cause a problem in texture, the durability of the processing effect is insufficient, a substance that causes environmental problems may be used as a processing chemical, Focusing on problems such as unstable and difficult to obtain reproducibility in the quality of processed products, we have excellent economic value and adaptability to environmental problems, a large effect on imparting functionality, and practical value with excellent durability. Research on practical application of high drug screening and processing methods was conducted.
Polyamide-based fiber material, commonly known as nylon, is often used for clothing that touches the skin directly, such as pantyhose, innerwear, and sporting goods, and imparting functionality represented by wearing comfort is an extremely important issue. It is.
In addition, by utilizing sericin aqueous solution obtained by collecting and concentrating silk scouring waste liquid or dry-up powdered sericin as a raw material for high-value-added processing of fiber materials, new practical high-value functionality If we can develop a processing method for fiber materials, we will be able to recycle waste and reduce drainage load, which will lead to the development of processing methods that are friendly to the global environment. Furthermore, as part of the recycling of silk and wool discharged as recycled clothing or textile waste, durable water-soluble silk fibroin, collagen or keratin produced by decomposing silk and wool with enzymes and alkalis are made durable. Effective use by excellent processing methods contributes to environmental problems.

Means for solving the problem

  As a result of promoting the development and research on the processing method of functional fibers that are excellent in skin quality such as economic efficiency, environment / safety, texture, durability, processing effect of processed products, etc. A water-soluble protein such as sericin, silk fibroin, collagen, and keratin is used as a cross-linking agent using a pyrimidine-based compound composed of polyhalogenopyrimidine for imparting moisture absorption / release properties, wearing comfort, and texture to the material. , Soy protein, corn protein, and polyamide fiber material coexist, heat treatment treatment with weak alkali as the primary treatment, then heat treatment with weak acid as the secondary treatment, if necessary, polyamide fiber material We have found a new processing method that effectively improves the process.

The present invention uses a pyrimidine-based compound composed of polyhalogenopyrimidine as a cross-linking agent, and cross-links animal and plant proteins to a polyamide fiber material, thereby firmly binding skin-friendly proteins to the polyamide fiber material. This is the main processing method. In order to achieve the purpose, the polyhalogenopyrimidine-based cross-linking agent is emulsified and dispersed using an emulsifier or a dispersant, then a water-soluble protein and a fiber material are added, and after heat-reacting with a weak alkali as a primary treatment, This is a method for modifying a polyamide fiber material by heat treatment with weak acidity as a secondary treatment as required.
Water-soluble sericin or silk fibroin, which is a kind of animal protein, is a high molecular protein obtained by scouring or hydrolyzing raw silk. As described on page 6, page 36, the molecular weight is distributed from several hundreds to several hundreds of thousands, and the binding state of amino acids is a very complicated and diverse multicomponent mixture.

Furthermore, the number of pyrimidine groups that bind to one molecule of the macromolecular protein is not limited to one, and a plurality of pyrimidine groups that are randomly bonded may be bonded to the fiber. Therefore, the state in which the silk protein reacts and binds to the nylon fiber via the pyrimidine-based compound is also extremely complicated and diverse, and it is impossible to simply identify the binding state between the fiber and the silk protein. The main purpose is to firmly bind the protein to the nylon fiber through the group.
A collagen peptide obtained by enzymatic degradation of wool is a high molecular protein having a molecular weight of thousands to tens of thousands, and has the same physical properties as the above-described sericin.
Soy protein, which is a typical plant protein, has similar physical properties.
First, halogenopyrimidines are emulsified and dispersed in water together with emulsifiers or dispersants, degassers, leveling agents and inorganic salts are added as necessary, alkaline compounds as acid binders are added, and the temperature is raised by heating. After keeping warm for several tens of minutes or one hour, cool and wash, soap, or add a pH slide agent that becomes weakly acidic and heat up, and heat-treat in a weakly acidic state for several tens of minutes or one hour To complete the reaction.

The embodiment of the present invention will be described in more detail.
Stir and emulsify 0.2-6% owf polyhalogenopyrimidine compound together with an appropriate amount of emulsifier in water having a bath ratio of 1: 10-1: 30, and add 1-3% owf deaerator and leveler. The dye is added, and the temperature is increased by adding 5 to 15% concentration of sodium nitrate, 1 to 10% owf of sodium carbonate, and 0.2 to 6% owf of water-soluble protein. Nylon fiber is added to this, and it heats up, circulating a liquid. During this time, PH is kept at a weak alkalinity of about 7-9. This solution is heated and heated and stirred at 80 to 100 ° C. for several tens of minutes to about 1 hour. Next, it is cooled and washed, soaped, or if necessary, a pH slide agent exhibiting weak acidity is added and the temperature is raised again, and the pH is weakly acidic with about 6 to 4 at 80 to 100 ° C. Stir for about an hour. After that, it can be cooled, washed, soaped, washed and dried.

  The polyhalogenopyrimidine-based compound that can be used in the present invention can be synthesized according to the methods described in Japanese Patent Nos. 3364896 and 28255581. Specific examples of the polyhalogenopyrimidine compounds include the following compounds, but in summary, any polyhalogenopyrimidine compound having two or more reactive halogen atoms may be used. It is not restricted to examples. 2,4,6-trichloropyrimidine, 4,5,6-trichloropyrimidine, 2,6-dichloropyrimidine, 4,6-dichloropyrimidine, 5-cyano-2,4,6-trichloropyrimidine, 2,6-dichloro Examples thereof include -4-aminopyrimidine and difluoromonochloropyrimidine.

In the case of silk, the water-soluble protein that can be used in the present invention is an aqueous solution containing a slightly low molecular weight sericin recovered from an alkaline refining waste solution, or a slightly larger molecular weight sericin recovered by chemical-free high temperature high pressure method refining. May be used. Silk fibroin is preferably hydrolyzed and previously water-soluble.
In the case of animal proteins such as wool, fish, and pigs, collagen peptides that have been made water-soluble by degrading them by enzymatic degradation or alkaline degradation are advantageously used.
The molecular weight distribution is generally a multi-component mixture containing hundreds to hundreds of thousands of high molecular weight proteins, but proteins with molecular weight distributions of thousands to tens of thousands are often used. In addition, these proteins may be used as a concentrated product by ultrafiltration concentration or the like, or may be further dried up by a spray drying method or the like to form a powder.
Proteins are natural materials and are high molecular weight proteins formed by polycondensation of many kinds of amino acids, and have large variations in molecular weight and molecular weight distribution. In addition, these values vary depending on the hydrolysis conditions and the recovery method. Therefore, it is necessary to check the analytical values and physical properties of the molecular weight distribution and to examine the water solubility and to reflect them in the processing conditions.
Furthermore, it is also important to effectively use proteins produced as part of recycling recycled clothing or silk and wool discharged as fiber waste.
As described in Fragrance Journal, April 2000, page 23, hydrolyzed silk with an appropriately adjusted molecular weight can be used, and hydrolyzed silk derivatives can also be used.

The fiber material to be processed of the present invention is a polyamide-based synthetic fiber generally named nylon, specifically 6,6-nylon, 6-nylon, 6,10-nylon, 11-nylon, 9- Nylon and 4-nylon alone or as a mixture, but other synthetic or semi-synthetic fibers such as polyurethane, polyester, polyacrylonitrile, acetate, polylactic acid, viscose rayon and natural fibers such as silk, wool, cotton, etc. It may be a blended / unwoven fiber.
Further, the present invention can be applied to all forms of fiber materials such as yarn, woven fabric, knitted fabric, and non-woven fabric.

The polyamide-based fiber material processed and modified by the method of the present invention becomes a functional fiber excellent in moisture absorption / release properties and wearing comfort, and various characteristics of the protein due to the binding of protein friendly to the skin, for example, A functional fiber having a warm texture, moisture absorption / desorption property, deodorant property, antioxidant property, ultraviolet absorption property, antibacterial property and the like, and excellent in strength and durability can be obtained.
In particular, the method of the present invention that can utilize sericin, which is a silk protein contained in waste liquid generated in the scouring process of silk, in a method with high practical value has the effect of two birds with one stone of reducing wastewater load and recycling waste. It is a new technology that responds to environmental problems in the 21st century and can be said to be an eco-friendly fiber processing method.

  Hereinafter, the present invention will be described in detail by way of examples, but the present invention is not limited to these examples. In the examples, parts and% mean parts by weight and% by weight.

上記試験結果から明らかなように、本発明加工品は吸水速乾性が著しく優れている事が確認された。
（２）着用快適性試験：
モニターによって上記４種類の製品について▲１▼肌触り感、▲２▼なめらかさ、▲３▼しなやかさ、▲４▼さらっとした感じ、▲５▼蒸れ感、について着用官能試験を行った結果、本発明加工品がいずれにおいても最も優れていた。
また、洗濯を２０回繰返したあとの評価も全く同等に優れていた。
なお、衣服の着用快適性試験に影響を及ぼす要因として、吸水性と吸湿性があるが、多量発汗時には、着用快適感や熱・水分移動特性には、ウエアの吸湿性よりも吸水・蒸発特性及び通気性の関与が大きいと言われている。Example 1
A 12L cheese dyeing machine is charged with 12L of water, and 1 kg of nylon 6 cheese-wrapped yarn (70d-24) is set. Next, while circulating the liquid, 30 g (3% owf) of ALBEGAL FFA-01 (manufactured by CIBA) as a degassing agent, 10 g (1% owf) of ALBEGAL B (manufactured by CIBA) as a leveling agent, anhydrous sodium nitrate Of 960 g (80 g / L). Further, 20 g (2% owf) of emulsifier Pelletex N (made by Miyoshi Oil and Fats) was dissolved in 100 mL of water, and 20 g (2% owf) of 2,4,6-trichloropyrimidine was added and emulsified to be cheese-dyed. Prepare the machine. Further, 20 g (2% owf) of water-soluble sericin powder and 20 g (2% owf) of soda ash were added, and 1.5 ° C./min. The temperature is raised to 90 ° C. and kept at 90 ° C. for 30 minutes.
Next, the temperature is lowered to 70 ° C., 60 g (5 g / L) of Sandacid V Liquid (manufactured by Clariant) is added as a PH slide agent, the temperature is raised to 100 ° C., and the temperature is kept for 30 minutes. After cooling and draining, washing with water is repeated twice, washing with hot water at 60 ° C. for 5 minutes, further washing with water and drying.
The nylon 6 yarn thus modified was knitted into pantyhose and tested as follows.
(1) Water absorption quick-drying test: residual moisture content (%)

As is clear from the above test results, it was confirmed that the processed product of the present invention is remarkably excellent in water absorption and quick drying.
(2) Wear comfort test:
As a result of wearing sensory tests on the above four types of products on a monitor, (1) feel, (2) smoothness, (3) suppleness, (4) dull feeling, (5) stuffiness, The invention processed product was the best in any case.
Moreover, the evaluation after 20 times of washing was equally excellent.
In addition, water absorption and hygroscopicity are factors that affect the wear comfort test of clothes. However, when sweating a lot, sweat comfort and heat / moisture transfer characteristics are more water absorption / evaporation characteristics than wear hygroscopicity. In addition, it is said that the air permeability is greatly involved.

Example 2
A drum dyeing machine was charged with 30 L of water, 1 kg of an inner nylon product was added, and the same% concentration or the same% owf drug and auxiliary as in Example 1 were added and processed under the same conditions. As a result, both the water-absorbing quick-drying property and the wearing comfort were the most excellent as in Example 1.

Example 3
A 12L cheese dyeing machine is charged with 12L of water, and 1 kg of nylon 6 cheese-wrapped yarn (70d-24) is set. Next, while circulating the liquid, 30 g (3% owf) of ALBEGAL FFA-01 (manufactured by CIBA) as a degassing agent, 10 g (1% owf) of ALBEGAL B (manufactured by CIBA) as a leveling agent, anhydrous sodium nitrate Of 960 g (80 g / L). Further, 15 g (1.5% owf) of emulsifier Pelletex N (made by Miyoshi Oil & Fats) was dissolved in 100 mL of water, and 15 g (1.5% owf) of 2,4,6-trichloropyrimidine was added and emulsified. Prepare a cheese dyeing machine. Further, 15 g (1.5% owf) of water-soluble sericin powder and 15 g (1.5% owf) of soda ash were added, and 1.5 ° C./min. The temperature is raised to 90 ° C. and kept at 90 ° C. for 30 minutes. Next, the temperature is lowered to 70 ° C., 60 g (5 g / L) of Sandacid V Liquid (manufactured by Clariant) is added as a PH slide agent, the temperature is raised to 100 ° C., and the temperature is kept for 30 minutes. After cooling and draining, washing with water is repeated twice, washing with hot water at 60 ° C. for 5 minutes, further washing with water and drying.
Nylon 6 yarn thus modified was knitted into a modified nylon tights and tested, and as a result, both water-absorbing quick-drying and wearing comfort were the most excellent as in Example 1.

The invention's effect

According to the present invention, a water-soluble protein can be firmly bonded to a polyamide fiber material, and a fiber material excellent in moisture absorption / release properties, wearing comfort, texture, durability and strength can be obtained.
In addition, instead of unstable and dust-scattering cyanuric chloride and resin processing chemicals that tend to become rough and hard, the use of highly stable polyhalogenopyrimidines makes the processed fiber material a stable quality product. Is also an important element of the present invention.
Furthermore, sericin, which has been attracting attention as an important protein in recent years, is currently discharged about 1800 tons annually nationwide, and most of this is disposed of as silk scouring waste liquid, but this waste is effectively used as a resource. Will lead to a reduction in drainage load. In addition, the establishment of a recycling system for garments is an urgent issue, but since it is thought to contribute to the construction of such a recycling society, it is an important element of the present invention that it is an environmental measure for two birds with one stone.

Claims (5)

A method of modifying a polyamide fiber material with a protein, wherein the polyamide fiber material is modified by combining a water-soluble protein and the polyamide fiber material using a polyhalogenopyrimidine compound as a crosslinking agent. Polyhalogenopyrimidine compounds are 2,4,6-trichloropyrimidine, 4,5,6-trichloropyrimidine, 2,6-dichloropyrimidine, 4,6-dichloropyrimidine, 5-cyano-2,4,6-trichloro. The method for modifying a polyamide fiber material with a water-soluble protein according to claim 1, which is at least one polyhalogenopyrimidine compound selected from the group consisting of pyrimidine and difluoromonochloropyrimidine. As processing conditions for modifying polyamide fiber materials, polyhalogenopyrimidine compounds are emulsified and dispersed in water together with emulsifiers or dispersants, and heat-reaction treatment is performed under weak alkalinity in the presence of water-soluble proteins and polyamide fiber materials. Then, if necessary, the polyamide fiber material is heat-treated with a weak acid, and is modified with a water-soluble protein. Polyamide-based fibers collectively referred to as nylon as the fiber material to be modified in claims 1, 2 and 3, such as 6,6-nylon, 6-nylon, 6,10-nylon, 11-nylon, 9 -Polyamide-based fiber material, which is a single or mixture of nylon and 4-nylon, or is modified for synthetic fiber and / or natural fiber mixed / woven fabric material, by water-soluble protein Modification processing method. The protein according to any one of claims 1 to 4, wherein a water-soluble animal or vegetable protein such as sericin, silk fibroin, collagen, keratin, soybean protein, corn protein and the like is used at room temperature to a heated temperature. A method for modifying a polyamide fiber material with protein.