JPH07279049A - 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 provided with 0.5-10g based on 100g of a polyester-based fiber product of N,N-diethyl-m-toluamide and heat-treated at 140-190 deg.C for 0.1-10 minutes to permeate the repellent to the interior of the yarn constituting the yarn product.

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 (Japanese Patent Laid-Open Nos. 2-264073 and 3-2348).
77), powdered repellent (2-6670, same).
No.), 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 fiber surface, a method of kneading the repellent agent into the fiber, and the like are known, and various methods of permeating the fiber with the repellent agent have been reported.

[0005]

However, these conventional pest repellent methods have various problems. For example,
In the method of applying an emulsified liquid of a repellent and a film-forming substance to the fiber to form a film containing the repellent on the surface of the fiber, the texture of the treated cloth is changed and the persistence of the repellent effect is improved. It is difficult to control. The method of forming a coating film containing the repellent powdered, supported on an inorganic carrier or microencapsulated on the fiber surface by using a binder is capable of sustained release of the repellent. Although it has excellent properties, it still has the drawback that the change in the texture of the treated fabric cannot be avoided. The method of kneading the repellent into the fiber has excellent wash resistance, but especially when kneading the repellent into the fiber having a high melting point such as polyester,
At the time of melt spinning, the repellent on the surface of the yarn may volatilize into the air and worsen the working environment, and in order to obtain a certain repellent effect, it is necessary to knead a large amount of the repellent, and therefore the physical properties of the fiber There is a drawback such as a decrease in

On the other hand, the method of infiltrating the repellent into the fiber is less likely to change the texture and physical properties of the fiber and the durability of the repellent effect can be expected, but the conventionally known methods do not exhibit sufficient effect. . For example, a method of infiltrating a repellent into a swollen fiber at the time of spinning (JP-A-59-163).
No. 426, JP-A-4-263617, and JP-A-5-3115.
No. 09) or a method in which a fiber is swollen using a solvent and a repellent is permeated (No. 3-14678) can be expected to have a good repellent effect, but the treatment method is complicated.
Further, a method of treating the fibers in an unstretched state and heating them (see the same 1-4
In No. 0622), 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 easily penetrates and a resin from which it easily extends and infiltrating a repellent into a specific portion (No. 2-307912) increases 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 be permeated and diffused from the surface to the inside of the polyester fiber product and has a repellent effect that is excellent in washing resistance and durability against blood-sucking pests. This method is easy to operate. In addition, they have found that the texture and physical properties of the textile product do not change, and have completed the present invention.

That is, in the present invention, N, N-diethyl-m-toluamide is added in an amount of 0.5 per 100 g of the polyester fiber product.
It is a pest repellent processing method for a polyester-based fiber product, in which 10 to 10 g is applied and heat treatment is performed at 140 to 190 ° C. for 0.1 to 10 minutes.

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 terephthalate fibers for the purpose of improving anti-pill property, improving dyeability of cationic dyes, etc. it can.

In the present invention, a method of imparting N, N-diethyl-m-toluamide to a polyester fiber product is to prepare a solution of N, N-diethyl-m-toluamide, and use this solution for the polyester fiber product. There is a method in which the polyester fiber product is coated with a doctor knife or the like, or the polyester fiber product is dipped in a solution, squeezed and adhered, and then dried. Examples of the solution of N, N-diethyl-m-toluamide include an aqueous solution dissolved or dispersed in water and an emulsified solution, and a solution dissolved in a solvent such as alcohol, benzene, xylene, or toluene, but the aqueous solution is cost and safe. Is preferably used. The concentration of N, N-diethyl-m-toluamide in the solution is 0.1 to 3
0% by weight is preferable, and the amount of N, N-diethyl-m-toluamide imparted to the polyester-based fiber product is effective when N, N-diethyl-m-toluamide is polyester-based when heat treatment is subsequently performed. 0.5 per 100 g of polyester fiber product so that it is fixed to the fiber product
10g is preferable. 100g polyester fiber products
If the amount of N, N-diethyl-m-toluamide given per hit is less than 0.5 g, the durability of the repellent is insufficient when heat-treated, and if it exceeds 10 g, the repellent effect with respect to the added amount is improved. Low, not economical, strength, elongation,
It is not preferable because it tends to cause deterioration of the physical properties of the fiber such as Young's modulus and the dyeing fastness of the dyed product. More preferably, the amount added is in the range of 0.8 to 5.0 g.

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.

Nonionic surfactants that can be used to prepare an aqueous solution of N, N-diethyl-m-toluamide include polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene higher fatty acid ester, and polyoxyethylene higher fatty acid ester. Examples thereof include oxyethylene sorbitan alkylate and polyoxyethylene alkylamine, with polyoxyethylene alkyl ether being preferred. The amount of nonionic surfactant used is preferably less than 2% by weight.

Drying after coating N, N-diethyl-m-toluamide on the polyester fiber product can remove water and / or solvent of N, N-diethyl-m-toluamide used for coating. The polyester fiber product coated with N, N-diethyl-m-toluamide may be used at 60 to 130 ° C. under normal pressure in an air bath.
It is preferable to heat for about 30 seconds to 10 minutes, and an ordinary hot flue, tenter, cylinder dryer or the like can be used.

Next, after N, N-diethyl-m-toluamide was added to the polyester fiber product as described above,
0.1 to 1 at 140 to 190 ° C. for permeating N, N-diethyl-m-toluamide into the polyester fiber.
Heat treatment is performed for 0 minutes. The processing condition is that the heating temperature is 14
If the temperature is lower than 0 ° C, the diffusion and penetration of N, N-diethyl-m-toluamide into the polyester fiber becomes insufficient,
N, N-diethyl-m once diffused and permeated above 0 ° C
-The volatilization of toluamide becomes significant. Therefore, the heating temperature is 1
It is more preferably 50 to 180 ° C. If the time is less than 0.1 minutes, the diffusion and permeation of N, N-diethier-m-toluamide into the polyester fiber is insufficient, and if it exceeds 10 minutes, the N, N-diethier-m-toluamide once diffused and permeated. Volatilization becomes remarkable, which is not preferable. The heating time is preferably short, and more preferably 0.2 to 5 minutes. When heat treatment is performed under such conditions,
N, N-diethyl-m-toluamide appropriately permeates into the fibers constituting the polyester fiber product,
-A specific combination of diethyl-m-toluamide and a polyester fiber product has the effect of gradually releasing N, N-diethyl-m-toluamide from inside the fiber, washing the polyester fiber product to form a fiber surface. Even if the N, N-diethyl-m-toluamide was removed from the inside of the fiber,
Diethyl-m-toluamide can be leached out to exert a repellent effect and exhibit its sustainability.

The method of pest repellent processing of polyester 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 by 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.

[0019]

【Example】

Example 1 3 g of N, N-diethyl-m-toluamide was dissolved in 6 g of isopropyl alcohol, and further polyoxyethylene stearyl ether (the number of moles of ethylene oxide added was 20).
After adding 1.5 g, it was diluted with water to 100 ml to obtain a transparent aqueous solution. Regular polyester 100% short-fiber plain weave (30 count, 120 yarns / 2.54)
cm, weft 30th count 70 pieces / 2.54 cm), and the excess liquid was squeezed with a mangle so that the liquid adhesion rate was 80%. This was dried in an oven at 80 ° C for 7 minutes and then heat treated at 170 ° C for 60 seconds. The hardness and the feeling of thickness of the obtained woven fabric were the same as those of the unprocessed fabric, and no change was observed. After repeating this washing 10 times under the conditions of JIS L 0217 103 method, a mosquito repellent efficacy test is conducted by the following method, using a finished cloth (processed cloth not washed) as a control and an unprocessed cloth as a control. It was 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 (%).

[0021]

[Table 1]

Comparative Example 1 A regular polyester 100% short fiber plain fabric similar to that used in Example 1 was immersed in 100 ml of an aqueous solution containing 3 g of N, N-diethyl-m-toluamide prepared in the same manner as in Example 1 Then, the excess liquid was squeezed with a mangle to obtain a liquid adhesion rate of 80%, and further dried in an oven at 80 ° C. for 7 minutes to obtain a work 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 after further repeating 10 times of washing to determine the stationary rate and the repelling rate. The results are shown in Table 1.

Comparative Example 2 100 ml of an aqueous solution containing 3 g of N, N-diethyl-m-toluamide prepared in the same manner as in Example 1 was scoured and bleached with 100% plain cotton fabric (warp 40 count 130 yarns / 2. 54
cm, weft 40 count 65 pieces / 2.54 cm), and squeeze the excess liquid with a mangle to make the liquid adhesion rate 80%,
This is dried in an oven at 80 ° C for 7 minutes, then 1
Heat treatment was performed at 70 ° C. for 60 seconds. Example 1 was obtained using the obtained processed cloth and the processed cloth which was further washed 10 times.
The mosquito repellent efficacy test was conducted in the same manner as in, and the stationary rate and the repellent rate were obtained. The results are shown in Table 1.

Comparative Example 3 2 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. Using this aqueous solution, Example 1
A regular polyester 100% short fiber plain woven fabric similar to the above was impregnated to a liquid adhesion rate of 80% in the same manner, further dried in an oven at 80 ° C. for 7 minutes, and then heat-treated at 170 ° C. for 60 seconds. 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 each of the comparative examples, the repellency was excellent at the end of processing, but when washing was repeated, the effect was remarkably reduced and the washing resistance was poor. Sample No. 1 exhibited excellent effects both after processing and after washing and had good washing resistance.

Examples 2 to 4, Reference Examples 1 to 2 N, N-diethyl-m-toluamide (20 g) was mixed with 5.0 g of polyoxyethylene phenyl ether (10 moles of ethylene oxide added) and heated to 75 ° C. with stirring. Meanwhile, 75 ml of warm water was added little by little to obtain a stable oil-in-water type emulsion (concentration 20%). Water was added to this emulsion at a ratio shown in Table 2 to prepare a treatment liquid, and a regular polyester 100% short fiber plain woven fabric similar to that used in the example was dipped in the same manner as in Example 1 and then liquid adhesion was performed. The excess liquid was squeezed with a mangle to a rate of 80%. Then this in the oven 8
It was dried at 0 ° C. for 7 minutes and further heat-treated at 160 ° C. for 2 minutes to obtain the work cloths used in Examples 2 to 4. The hardness and the feeling of thickness of the obtained woven fabric were the same as those of the unprocessed fabric, and no change was observed. It should be noted that the treatment liquids having the same composition as in Examples 2 and 4 in Table 2 were used, soaked in the same plain woven fabric as above at the same ratio, squeezed to a liquid adhesion rate of 80% and dried, and only the heat treatment step was omitted. The prepared cloth was prepared and used for Reference Examples 1 and 2. A blank cloth was treated with water under the same conditions and in the same steps as above, and the blank cloth and the processed cloths of Examples and Reference Examples obtained above were used to treat mosquitoes in the same manner as in Example 1. A repellency test was performed to determine the static rate and the repellency rate. The results are shown in Table 2.
Shown in.

[0027]

[Table 2]

As shown in Table 2, Examples 2 to 4 showed repellent effect depending on the applied amount and excellent wash resistance. On the other hand, in the reference example, although the repellent effect at the time of processing was excellent, the effect remarkably decreased after washing. This is because, in the example, as a result of heat treatment of polyester fiber to which N, N-diethyl-m-toluamide is applied, N, N-diethyl-m-toluamide permeates and diffuses inside the fiber and is washed. Even when N, N-diethyl-m-toluamide on the surface of the fiber was washed away, the phenomenon of leaching from the inside of the fiber occurred, whereas in the reference example, no heat treatment was performed, so that N, N-diethyl-m-toluamide It is presumed that this is because most of N, N-diethyl-m-toluamide was washed away by washing due to insufficient permeation and diffusion into the inside of the fiber.

Examples 5 to 7 and Reference Examples 3 to 6 N, N-diethyl-m-toluamide (5 g) was dissolved in isopropyl alcohol (10 g) to give polyoxyethylene cetylstearyl ether (ethylene oxide addition mole number 2).
0) After adding 2.0 g, it was diluted with water to 100 ml to obtain a transparent aqueous solution. In the same manner as in Example 1, this aqueous solution was dipped in a 100% cationic dyeable polyester short fiber knitted fabric (32nd count milling knitting) to give a liquid adhesion rate of 80%, and dried in an oven at 80 ° C. for 7 minutes. After drying, heat treatment was performed under various 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.

[0030]

[Table 3]

As shown in Table 3, in the range of the processing conditions of Examples 5 to 7, good repellent effect was obtained both after the processing and after 10 times washing without changing the physical properties of the fiber. No. 4 has a good repellent effect after processing, but the effect after washing decreases, and Reference Examples 5 and 6 have little effect both after processing and after washing. Further, in Reference Example 6, shrinkage and curing of fibers are observed. It was From this, in the heat treatment after applying N, N-diethyl-m-toluamide, if the treatment temperature is low, the permeation and diffusion of the repellent into the fiber is insufficient, and most of the effects are lost after washing (reference. In Examples 3 and 4), when the treatment temperature is too high, the repellent agent volatilizes more than the portion that permeates and diffuses into the fiber, and a good effect cannot be exhibited both at the end of processing and after washing (Reference Example 5, 5). 6) Further, it is considered that the physical properties of the fiber are also changed by exposing the fiber to a high temperature for a long time (Reference Example 6).

[0032]

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 treats them under a specific condition. By permeating and diffusing from the surface of the product to the inside, it gives a repellent effect with excellent washing resistance and durability to blood-sucking pests, and a polyester fiber product with no change in the texture and physical properties of the fiber can be obtained. . 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 (1)

[Claims] 1. A polyester characterized in that 0.5 to 10 g of N, N-diethyl-m-toluamide is added to 100 g of a polyester fiber product, and heat-treated at 140 to 190 ° C. for 0.1 to 10 minutes. Method for pest repellent processing of textile products.