JPH07279050A - Insect pest repelling processing method for polyester-based yarn product - Google Patents

Abstract

PURPOSE:To obtain a polyester-based yarn product having excellent washing resistance and persistence with repelling effect on blood sucking insect pests by a simple method without impairing handle and physical properties of the yarn product. CONSTITUTION:A polyester-based yarn product is immersed in an aqueous solution containing N,N-diethyl-m-toluamide and heat-treated in a closed state. Or, a uniform solution obtained by adding N,N-diethyl-m-toluamide to a dyeing bath is used as the aqueous solution containing N,N-diethyl-m-toluamide and the polyester-based yarn product is immersed in this solution and heat-treated in a closed state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pest repellent processing method for polyester fiber products. More specifically, it is possible to impart a repellent effect to blood-sucking pests, which is excellent in washing resistance and durability, to polyester fiber products, and also imparts a repellent effect by a simple method without impairing the texture and physical properties of the fiber product. The present invention relates to a method for pest repellent processing of a polyester fiber product, which can be performed.

[0002]

2. Description of the Related Art In recent years, outdoor sports such as camping, fishing, hiking, and tennis have become popular, and there are many opportunities to become familiar with nature. In these outdoor activities,
Especially in summer, the damage caused by various pests is increasing. Among the pests, blood-sucking pests such as mosquitoes, flies, gnats, fleas, mites, and lice are not only damaged by physical pain but may also transmit an infectious disease.

Generally, in order to prevent the damage of blood-sucking pests, pests should be avoided from being touched by the human body by wearing insect-proof clothes or covering the living environment with insect-proof textiles. The method of doing is adopted. Conventionally, in order to impart repellent property to a textile product, a method of applying a repellent agent to the textile product (Japanese Patent Laid-Open No. 2-62804, etc.) has been carried out, but in this method, the repellent agent adheres to the surface of the fiber. However, there is a drawback in that the repellent agent flows off when washed and the repellent effect does not continue.

Various methods for repelling textile products have been proposed to improve such washing resistance and durability. For example, a method of applying an emulsion of a repellent and a substance capable of forming a film to the fiber to form a film containing the repellent on the surface of the fiber (JP-A-2-264073 and 3-234).
877), powdered repellent (2-667)
No. 0), supported on an inorganic carrier (Id. 2-47374)
No.) or microencapsulated (Id. 2-36)
No. 02, No. 2-200602, No. 3-90682).
And the like, a method of forming a coating film containing these with a binder on the surface of the fiber, a method of kneading the repellent into the fiber, and the like, and various methods of permeating the repellent into the fiber have been reported.

[0005]

However, these conventional pest repellent methods have various problems. For example,
The method of applying an emulsion of a repellent and a film-forming substance to the fiber to form a film containing the repellent on the surface of the fiber changes the texture of the treated cloth and controls the persistence of the repellent effect. Is difficult. The method of forming a coating film containing a repellent agent in the form of powder, supported on an inorganic carrier, or microencapsulated on the fiber surface using a binder is capable of sustained release of the repellent and can be sustained. Although it has excellent properties, it still has the drawback that the change in the texture of the treated fabric cannot be avoided. Further, the method of kneading the repellent into the fiber has excellent washing resistance, but especially when kneading the repellent into the fiber having a high melting point such as polyester, the repellent on the yarn surface is volatilized into the air during melt spinning. The work environment may be deteriorated, and in order to obtain a certain repellent effect, it is necessary to knead a large amount of the repellent, and there are drawbacks such as deterioration of physical properties of the fiber.

On the other hand, the method of infiltrating the fiber with the repellent is less likely to change the feeling and physical properties of the fiber and the durability of the repellent effect can be expected, but the conventionally known methods are not sufficiently effective. . For example, a method of infiltrating a repellent into a swollen fiber at the time of spinning (JP-A-59-16).
3426, JP-A-4-263617 and JP-5-311.
No. 509) or a solvent is used to make the fibers swollen and permeate the repellent (No. 3-14678), but a good repellent effect can be expected, but the treatment method is complicated and the unstretched Method of treating into fibers and heating (same 1
No. 40622), the repellent was likely to fall off in the post-processing step of the textile product, and it was difficult to stably maintain the repellent effect. Further, a method of producing a composite fiber from a resin into which a repellent is easily penetrated and a resin which is easily stretched, and infiltrating a repellent into a specific portion (No. 2-307912) raises the manufacturing cost, and the physical properties of the fiber are high. Since it was specified, there were problems such as lack of versatility.

[0007] The present invention has been made by paying attention to the above points, and has excellent washing resistance and durability for a polyester-containing fiber product, and a simple method without impairing the feel and physical properties of the fiber product. A gist of the present invention is to provide a method for repelling harmful insects of a polyester fiber product, which can impart a repellent effect to blood-sucking harmful insects.

[0008]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that when a polyester fiber product is processed by a specific treatment method using a specific repellent, A polyester fiber product that can penetrate and diffuse from the surface to the inside of the polyester fiber product and has a repellent effect with excellent wash resistance and durability is obtained. It was found that the properties and physical properties did not change, and the present invention was completed.

That is, the present invention is a pest repellent processing method for a polyester fiber product, which comprises immersing the polyester fiber product in an aqueous solution containing N, N-diethyl-m-toluamide, and heat-treating it in an airtight manner. N-diethyl-m
-N, N- in the dyeing bath as an aqueous solution containing toluamide
It is a pest repellent processing method for a polyester fiber product using a solution in which diethyl-m-toluamide is added and homogenized.

The N, N-diethyl-m-toluamide used in the present invention is a known repellent, and a commercially available one can be used.

In the present invention, the polyester-based fiber product capable of imparting the repellent effect includes yarns, knits, woven fabrics and clothing made of polyester-based fibers, and the polyester-based fibers include polyester fiber or polyester fiber. Examples include fibers made by mixing cotton, wool, and other synthetic fibers. As a mixing method, there are mixed spinning, mixed weaving and the like, but it is preferable that at least 30% or more of polyester fiber is contained in order to sufficiently bring out the effect of the present invention. Examples of polyester fibers include polyethylene terephthalate fibers, and fibers obtained by chemically modifying polyethylene retephthalate fibers for the purpose of improving pill resistance, imparting dyeability to cationic dyes, etc. You can

In the present invention, the aqueous solution containing N, N-diethyl-m-toluamide may be an aqueous solution dissolved or dispersed in water and emulsified, and N, N-diethyl-m-toluamide may be dissolved or dispersed in a dyeing bath. It may be an aqueous solution obtained by emulsification (hereinafter referred to as "dyeing bath"). In the present invention, it is preferable to use these aqueous solutions so that the amount of N, N-diethyl-m-toluamide is 0.2 to 10 g per 100 g of the polyester fiber product. A polyester fiber product that exhibits excellent repellent effect is obtained. When the amount of N, N-diethyl-m-toluamide is less than 0.2 g per 100 g of polyester fiber product,
The repellent existing in the fiber surface or in the fiber near the fiber surface is insufficient and the effect becomes insufficient. When it exceeds 10 g, the physical properties of the polyester fiber are apt to change, which is not preferable.

As the aqueous solution of N, N-diethyl-m-toluamide, a lower alcohol and / or a lower alcohol is added in order to improve the stability and wettability of the solution and facilitate the uniform attachment to the surface of the fibers constituting the polyester fiber product. It is preferable that a nonionic surfactant is used in combination. Examples of the lower alcohol that can be used here include methanol, ethanol, propanol, butanol and the like, with isopropanol being preferred. The amount of lower alcohol used is preferably less than 5% by weight in the aqueous solution.

Nonionic surfactants that can be used to prepare an aqueous solution of N, N-diethyl-m-toluamide include polyoxyethylene alkylphenyl ethers,
Examples thereof include polyoxyethylene alkyl ether, polyoxyethylene higher fatty acid ester, polyoxyethylene sorbitan alkylate, polyoxyethylene alkylamine and the like, and polyoxyethylene alkyl ether is preferable. The amount of nonionic surfactant used is 2% by weight.
It is preferably less than. Incidentally, if it is recognized that the presence of the nonionic surfactant affects the dyeing result in the same dyeing bath, the addition may be omitted.

The dyeing bath may be a known dyeing bath used for dyeing polyester fibers, and it may be an ordinary water dispersion using an azo type disperse dye, an anthraquinone type disperse dye, a condensation type disperse dye or the like in a necessary amount. A liquid can be used.
When the polyester fiber is a cationic dyeable fiber, a cationic dye dyeing bath can also be used.

Next, as described above, the polyester fiber product is dipped in an aqueous solution containing N, N-diethyl-m-toluamide, and heat-treated under a closed condition. Here, the state in which the polyester fiber product is immersed in the aqueous solution containing N, N-diethyl-m-toluamide means a state in which the polyester fiber product is present below the stationary liquid surface of the aqueous solution, polyester fiber The product is poured with the aqueous solution to cover the surface of the fibers constituting the polyester fiber product with the aqueous solution, and the term "closed" means that the product is pressurized in the presence of water by a heat treatment performed later. A known device can be used as long as it is a device that can maintain these states.For example, a high-pressure cheese dyeing machine for yarn, a high-pressure rotary bag, a high-pressure wins, a high-pressure jigger for cloth,
Examples of high-pressure jet dyeing machines, high-pressure beam dyeing machines and the like include high-pressure paddle dyeing machines for clothes, and any of these can be used.

The heat treatment performed under the above-mentioned sealed condition is 110 to 140.
It is preferable to carry out at 10 ° C. for 10 minutes or more. Heat treatment temperature is 11
If the temperature is lower than 0 ° C, the permeation and diffusion of N, N-diethyl-m-toluamide into the polyester fiber product becomes insufficient, and 1
If the temperature exceeds 40 ° C, the physical properties of the polyester fiber product will change, or the dyeing property of the disperse dye will change easily in the case of dyeing and treating in the same bath, and if the time is less than 10 minutes, N in the polyester fiber product will change. , N-diethyl-m-toluamide is not preferable because the osmotic diffusion is insufficient. The heat treatment time in the case of dyeing the same bath treatment may be the time usually required for completing the dyeing.

Under such conditions, N, N-diethyl-m-
When the polyester fiber product is immersed in an aqueous solution containing toluamide and heat-treated under a closed condition, N, N-diethyl-m-toluamide permeates properly into the fibers constituting the polyester fiber product, and N-diethyl-m-
A specific combination of toluamide and polyester fiber product has the effect of gradually releasing N, N-diethyl-m-toluamide from the inside of the fiber, and washing the polyester fiber product to produce N, N- on the fiber surface. Even if the diethyl-m-toluamide is washed away, the N, N-diethyl-m-toluamide can be leached from the inside of the fiber to exert a repellent effect and exhibit its sustainability.

The pest repellent processing method for polyester-based fiber products of the present invention can be applied to any shape of fiber products such as yarns, knits, woven fabrics and clothes made of polyester fibers, and these fiber products are repelled against pests. It is possible to impart sex. In addition, the polyester fiber products that have been repelled are worn as clothing for outdoor clothes, sports clothes, outdoor work clothes, sleeping bags, etc., or interior textile products such as curtains, carpets, table cloths, etc.
It can be used as a textile product for exteriors such as tents in a place that covers a living space to prevent the damage of harmful insects to the human body.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these as long as the gist thereof is not exceeded.

[0021]

【Example】

Example 1 N, N-diethyl-m-toluamide (5 g) was dissolved in isopropyl alcohol (10 g), and polyoxyethylene cetylstearyl ether (ethylene oxide addition mole number 2) was used.
0) After adding 2.0 g, it was diluted with water to 100 ml to obtain a transparent aqueous solution. An aqueous solution prepared by adding water to 15 ml of this aqueous solution to dilute it to 200 ml and regular polyester 100% short fiber knit cloth (32nd count milling) 10
g was placed in a pressure vessel of a high-pressure test dyeing machine (Mini Color MC12EL manufactured by Texam Giken Co., Ltd.), sealed, set in the dyeing machine, and heat-treated at 120 ° C. for 45 minutes. After the treatment, the treated cloth was taken out, washed thoroughly with water, and dried to obtain a treated cloth. The obtained treated cloth did not show any change in physical properties such as texture and strength even before the treatment. After washing this processed cloth 10 times under the conditions of JIS L0217 103 method, a mosquito repellent efficacy test is performed by the following method using the processed cloth (processed cloth not washed) and the unprocessed cloth as controls. went. The results are shown in Table 1.

Repellent effect confirmation test method. Test cloth Processed cloth, processed cloth after 10 times of washing, unprocessed cloth. Test method In a mosquito breeding cage with a size of about 30 × 30 × 30 cm, 30 female adults of Aedes albopictus (whose mating was completed in about 7 days after emergence) were released, and the temperature was 30 ± 2 ° C. and the humidity was 60 to 60 ° C.
Under 70% conditions, the human arm of the monitor was exposed to the cylindrical test cloth for 2 minutes in a wrapped cage. During this period, the number of mosquitoes that stopped on the test cloth wrapped around the arm (A: the number of mosquitoes that stopped on the processed cloth, B: the number of mosquitoes that stopped on the unprocessed cloth) was counted, and A ×
100 / Number of mosquitoes tested = Stationary rate (%), (BA) x
It was calculated as 100 / B = repellency (%).

[0023]

[Table 1]

Example 2 To 180 ml of an aqueous solution in which 0.05 g of Miketone Polyester Yellow 5G, 0.05 g of Miketone Polyester Blue FBL and 0.05 g of acetic acid were dissolved, 0.4 g of N, N-diethyl-m-toluamide, polyoxy Ethylene cetyl stearyl ether (ethylene oxide addition mole number 20) 0.2 g and isopropyl alcohol 1 ml
20 ml of an aqueous solution in which was dissolved was added and mixed to obtain 200 ml of an aqueous solution containing a dye and a repellent. This aqueous solution 2
00 ml and regular polyester 100% short fiber plain woven fabric (Warning number 30 120 pieces / 2.54 cm, weft 30 number 7
0 piece / 2.54 cm) was placed in a pressure vessel of the high-pressure test dyeing machine used in Example 1, sealed, set in the dyeing machine, and heat-treated at 130 ° C. for 60 minutes. After the treatment, the treated cloth was taken out, washed thoroughly with water, and dried to obtain a treated cloth. The obtained treated cloth did not show any change in physical properties such as texture and strength even before the treatment. The dyed hue and the degree of concentration are the same as those described above except that N, N-diethyl-m-toluamide was prepared.
No difference was observed in comparison with the case where 0 ml was used and stained under the same conditions as above. Using the obtained work cloth and the work cloth after repeating washing 10 times,
A mosquito repellent efficacy test was conducted in the same manner as in Example 1 to determine the stationary rate and the repellent rate. The results are shown in Table 1.

Comparative Example 1 0.75 g of N, N-diethyl-m-toluamide prepared in the same manner as in Example 1, 1.5 g of isopropyl alcohol and 0.3 g of polyoxyethylene cetyl stearyl ether (20 moles of ethylene oxide added). An aqueous solution (200 ml) containing 100 g of regular polyester and 100 g of short fiber knit cloth (32nd count milling) was placed in a 300 ml round-bottomed flask equipped with a reflux condenser, and heat-treated at reflux temperature for 45 minutes. After the treatment, the treated cloth was taken out, washed thoroughly with water, and dried to obtain a treated cloth. A mosquito repellent efficacy test was conducted in the same manner as in Example 1 using the obtained processed cloth and the processed cloth that was further washed 10 times, and the stationary rate and the repelling rate were obtained. The results are shown in Table 1.

Comparative Example 2 3 g of 2-hydroxyethyloctyl sulfide was dissolved in 6 g of isopropyl alcohol, 1.5 g of polyoxyethylene stearyl ether (20 moles of ethylene oxide added) was added, and the mixture was diluted to 100 ml with water. A clear aqueous solution was obtained. An aqueous solution prepared by adding water to 15 ml of this aqueous solution to dilute it to 200 ml and 10 g of regular polyester 100% short fiber knit cloth similar to that used in Example 1 were placed in a pressure container of the high-pressure test dyeing machine used in Example 1, It was sealed, set in the same dyeing machine, and heat-treated at 120 ° C. for 45 minutes. After the treatment, the treated cloth was taken out, thoroughly washed with water, and dried to obtain a processed cloth. A mosquito repellent efficacy test was conducted in the same manner as in Example 1 using the obtained processed cloth and the processed cloth which was repeatedly washed 10 times, and the stationary rate and the repelling rate were obtained. The results are shown in Table 1.

As shown in Table 1, in all the comparative examples, the repelling rate was excellent at the end of processing, but when the washing was repeated, the effect was remarkably reduced and the washing resistance was poor. Samples 1 and 2 exhibited excellent effects both after processing and after washing, and had good washing resistance.

Examples 3 to 6 20 g of N, N-diethyl-m-toluamide was mixed with 5.0 g of polyoxyethylene phenyl ether (10 moles of ethylene oxide added), and 75 ml of warm water was added while heating and stirring at 75 ° C. By adding little by little, an oil-in-water type stable emulsion (concentration 20%) was obtained. 200 ml of a treatment liquid was prepared by adding water in the ratio shown in Table 2 to this emulsion, and the same regular polyester 10 as that used in Example 1 was prepared.
10 g of 0% short fiber knit fabric was placed in the pressure vessel of the high-pressure test dyeing machine used in Example 1, sealed, set in the dyeing machine, and heat-treated at 120 ° C. for 45 minutes. After the treatment, the treated cloth was taken out, washed thoroughly with water, and dried to obtain a treated cloth. A mosquito treated with water under the same conditions and in the same steps as a blank cloth, and using the blank cloth, the processed cloth obtained above, and the processed cloth which was repeatedly washed 10 times as in Example 1. A repellent test was conducted to determine the static rate and the repellent rate. The results are shown in Table 2.

[0029]

[Table 2]

As shown in Table 2, Examples 3 to 6 show repellent effect depending on the applied amount and excellent wash resistance, and the polyester fiber is dipped in an aqueous solution of N, N-diethyl-m-toluamide. As a result of heat treatment under pressure, the N, N-diethyl-m-toluamide permeates and diffuses inside the fiber, and even if the N, N-diethyl-m-toluamide on the fiber surface is washed away and washed off, the fiber It is presumed that the effect of excellent washing resistance and durability is exhibited due to the phenomenon of bleeding from the inside.

Examples 7 to 12 0.75 g of N, N-diethyl-m-toluamide prepared in the same manner as in Example 1, 1.5 g of isopropyl alcohol and polyoxyethylene cetyl stearyl ether (20 moles of ethylene oxide added) 0 200 ml of an aqueous solution containing 0.3 g was prepared, and 10 g of the cationic dye-dyeable polyester 100% short fiber knit cloth was placed in a pressure vessel of the high-pressure test dyeing machine used in Example 1 and sealed,
The cloth was set in the dyeing machine and heat-treated under the conditions shown in Table 3 to obtain a work cloth. The obtained processed cloth was subjected to a mosquito repellent test in the same manner as in Example 1 to determine the stationary rate and the repellent rate. The results are shown in Table 3.

[0032]

[Table 3]

As shown in Table 3, in the range of the processing conditions of Examples 7 to 12, good repellent effect can be obtained both after the processing and after 10 times washing without changing the physical properties of the fiber. The best repellent effect was obtained under the processing conditions of 7 to 9 and 11. Examples 10 and 12 have a better repellent effect after 10 times of washing than Comparative Examples 1 and 2, but tend to have a slightly lower repellent effect after processing, as compared with Examples 7 to 9, and in Example 11 Significant shrinkage and hardening was observed on the work cloth.

[0034]

As described above, the method for processing pest repellent of a polyester fiber product of the present invention specifies a repellent and a fiber, and performs a specific treatment. The repellent is applied to the surface of the polyester fiber product. It is possible to obtain a polyester-based fiber product which is permeated and diffused inwardly to impart a repellent effect excellent in washing resistance and durability to blood-sucking pests and has no change in the feel and physical properties of fibers. Compared with conventionally known processing methods, it has a feature that it is a simple processing method and can be applied to any product form.

Claims (2)

[Claims] 1. A pest repellent processing method for a polyester fiber product, comprising immersing the polyester fiber product in an aqueous solution containing N, N-diethyl-m-toluamide, and heat-treating the polyester fiber product under a closed condition. 2. The method as set forth in claim 1, wherein a solution obtained by adding N, N-diethyl-m-toluamide to a dyeing bath is used as an aqueous solution containing N, N-diethyl-m-toluamide. Method for pest repellent processing of polyester-based textile products.