JP3406971B2 - Pest repellent processing method for polyester fiber products - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repelling pests of polyester fiber products. More specifically, a polyester fiber product can be provided with a repellent effect of a blood-sucking pest with excellent washing resistance and durability, and can be provided with a simple method without impairing the feel and physical properties of the textile product. The present invention relates to a pest repellent processing method for a polyester fiber product which can be performed. [0002] In recent years, outdoor sports such as camping, fishing, hiking, tennis and the like have become popular, and opportunities to get acquainted with nature have been increasing. In these outdoor activities,
Especially in summer, damage from various pests is increasing. Among the pests, blood-sucking pests such as mosquitoes, flies, gnats, fleas, ticks, lice and the like are not only damaged by physical pain, but also may transmit infectious diseases, so that it is necessary to reduce the damage. Generally, in order to prevent the damage of blood-sucking pests, wear insect-repellent clothes or cover the living environment with insect-repellent textiles, etc., so that the pests are prevented from getting on the human body. Is adopted. Conventionally, in order to impart repellency to textile products, a method of applying a repellent to the textile product (Japanese Patent Laid-Open No. 2-62804, etc.) has been performed. However, when washed, the repellent flows away and the repellent effect is not maintained. Various methods for repelling textile products have been proposed to improve such washing resistance and durability. For example, a method in which an emulsion of a repellent and a substance capable of forming a film is applied to the fiber to form a film containing the repellent on the surface of the fiber (JP-A-2-26473, JP-A-3-234)
877, etc.), and powdered repellent (2-667)
No. 0), and those supported on an inorganic carrier (No. 2-47374)
No.) or microencapsulated (2-36 above)
No. 02, No. 2-200602, No. 3-90682)
For example, a method of forming a coating containing these on the fiber surface with a binder using a binder, a method of kneading a repellent into the fiber, and the like are known, 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 substance capable of forming a film to the fiber and forming a film containing the repellent on the surface of the fiber changes the feeling of the treated cloth and controls the persistence of the repellent effect Is difficult. The method of forming a coating containing a powdered repellent, a substance supported on an inorganic carrier, or a microencapsulated substance on a fiber surface using a binder is capable of releasing the repellent slowly and continuously. Although it has excellent properties, the disadvantage that the change in the feeling of the treated cloth cannot be avoided is recognized. Also, the method of kneading the repellent into the fiber has excellent washing resistance, but especially when kneading the repellent into a fiber having a high melting point such as polyester, the repellent on the yarn surface volatilizes in the air during melt spinning. In addition to the possibility of deteriorating the working environment, it is necessary to knead a large amount of repellent in order to obtain a certain repellent effect, which has disadvantages such as lowering the physical properties of the fiber. [0006] On the other hand, the method of infiltrating the repellent into the fiber is less likely to change the feeling and physical properties of the fiber, and the repelling effect can be expected to be long-lasting. However, the conventionally known methods have not been sufficiently effective. . For example, a method of penetrating a repellent into a fiber in a swollen state at the time of spinning (JP-A-59-16)
No. 3426, JP-A-4-263617, JP-A-5-311
No. 509) or a method in which the fiber is swollen using a solvent to penetrate the repellent (No. 3-146678) can be expected to have a good repellent effect, but the processing method is complicated and the unreacted material is unstretched. A method of treating fibers and heating them (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. Furthermore, a method of producing a composite fiber from a resin that easily penetrates the repellent and a resin that easily stretches and infiltrates the specific part with the repellent (No. 2-307912) increases the production cost and increases the physical properties of the fiber. There is a problem that versatility is insufficient because it is specified. The present invention has been made in view of the above points, and provides polyester-containing fiber products having excellent washing resistance and durability and a simple method without impairing the feeling and physical properties of the fiber products. The gist of the present invention is to provide a method for repelling pests of polyester fiber products, which can provide a repellent effect for blood-sucking pests. Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, when a polyester fiber product is processed by a specific treatment method using a specific repellent, The repellent can be permeated and diffused from the surface of the polyester fiber product into the interior thereof to obtain a polyester fiber product having a repellent effect with excellent washing resistance and durability. The inventor found that the feeling and physical properties of the product did not change, and completed the present invention. That is, according to the present invention, a polyester fiber product is immersed in an aqueous solution containing N, N-diethyl-m-toluamide, and is sealed at 110 to 140 ° C. for 10 minutes under pressure.
This is a method for repelling pests of a polyester fiber product subjected to the heat treatment described above, and further comprises adding N, N-diethyl-m to a dyeing bath as an aqueous solution containing N, N-diethyl-m-toluamide.
-An insect repellent processing method for a polyester fiber product using a solution made uniform by adding toluamide. The N, N-diethyl-m-toluamide used in the present invention is known as a repellent, and commercially available ones can be used. The polyester fiber products which can impart the repellent effect in the present invention include yarns, knits, woven fabrics and clothing made of polyester fibers, and the polyester fibers include polyester fibers or polyester fibers. Fibers mixed with cotton, wool, and other synthetic fibers are included. Examples of the mixing method include blending and cross weaving, and it is preferable that at least 30% or more of the polyester fiber is contained in order to sufficiently exert the effects of the present invention. Examples of the polyester fiber include polyethylene terephthalate fiber, and fiber obtained by chemically modifying polyethylene terephthalate fiber for the purpose of improving the anti-pill property and imparting a cationic dye dyeing property. Can be. In the present invention, examples of the aqueous solution containing N, N-diethyl-m-toluamide include an aqueous solution dissolved or dispersed and emulsified in water, and N, N-diethyl-m-toluamide is dissolved or dispersed in a dye bath. An aqueous solution obtained by emulsification (hereinafter referred to as “dyeing bath”) may be used. In the present invention, these aqueous solutions are preferably used in an amount of 0.2 to 10 g of N, N-diethyl-m-toluamide per 100 g of a polyester fiber product. A polyester fiber product exhibiting an excellent repellent effect can be obtained. When the amount of N, N-diethyl-m-toluamide per 100 g of the polyester fiber product is less than 0.2 g,
The effect is insufficient due to a shortage of repellents present in the fiber surface or in the fiber near the fiber surface, and the effect is insufficient when it exceeds 10 g. As the aqueous solution of N, N-diethyl-m-toluamide, a lower alcohol and / or lower alcohol is used in order to enhance the stability and wettability of the solution and to make it easier to uniformly adhere to the surface of the fibers constituting the polyester fiber product. It is preferable that a nonionic surfactant is used in combination. As the lower alcohol which can be used here, methanol, ethanol, propanol, butanol and the like can be mentioned, and isopropanol is preferable. The amount of the lower alcohol used is preferably less than 5% by weight in the aqueous solution. Nonionic surfactants which can be used for preparing an aqueous solution of N, N-diethyl-m-toluamide include polyoxyethylene alkyl phenyl ether,
Examples thereof include polyoxyethylene alkyl ether, polyoxyethylene higher fatty acid ester, polyoxyethylene sorbitan alkylate, and polyoxyethylene alkylamine, with polyoxyethylene alkyl ether being preferred. The amount of the nonionic surfactant used is 2% by weight.
It is preferably less than. In the case of the same dyeing bath, if it is recognized that the presence of the nonionic surfactant affects the dyeing result, the addition may be omitted. The dyeing bath may be a known dyeing bath used for dyeing polyester fibers, and may be a conventional aqueous dispersion using a required amount of an azo disperse dye, an anthraquinone disperse dye, a condensation disperse dye or the like. Liquids 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 in the polyester-based textiles N, immersed in an aqueous solution containing N- diethyl -m- toluamide, a heat treatment is carried out in a closed pressure. Here, the state in which the polyester fiber product is immersed in the aqueous solution containing N, N-diethyl-m-toluamide refers to the state in which the polyester fiber product is present below the level of the stationary aqueous solution, the polyester fiber. means a state of covering the surface of the fiber product aqueous solution is poured into to constitute the polyester fiber products in aqueous solution, also the presence of water is a closed pressure,
A state in which pressure is applied by a heat treatment performed later, a known apparatus can be used as long as the apparatus can maintain these states. For example, in the case of yarn, a high-pressure cheese dyeing machine, In this case, a high-pressure winch, a high-pressure jigger, a high-pressure liquid dyeing machine, a high-pressure beam dyeing machine, and the like, and in clothing, a high-pressure paddle dyeing machine and the like can be used, and any of them can be used. The heat treatment carried out under the closed pressurization 110-1
It is preferable to carry out at 40 ° C. for 10 minutes or more. If the heat treatment temperature is lower than 110 ° C, N, N
When the permeation and diffusion of diethyl-m-toluamide become insufficient, and when the temperature exceeds 140 ° C., the physical properties of the polyester fiber product change, and the dyeability of the disperse dye tends to change in the case of the same dyeing bath treatment. If the time is less than 10 minutes, the permeation and diffusion of N, N-diethyl-m-toluamide into the polyester fiber product becomes insufficient, which is not preferable. In addition, the heat treatment time in the same dyeing bath treatment may be a time usually required for completing the dyeing. Under these conditions, N, N-diethyl-m-
The polyester fiber products were immersed in an aqueous solution containing toluamide, when a heat treatment is performed under sealed pressure N, N-diethyl--m- toluamide is moderately penetrates into the fibers constituting the polyester fiber products, also, N, N-diethyl-
A specific combination of m-toluamide and a polyester fiber product has the effect of gradually releasing N, N-diethyl-m-toluamide from inside the fiber, and washing the polyester fiber product to remove N, N on the fiber surface. Even if N-diethyl-m-toluamide is run off, N, N-diethyl-m
-Toluamide can be leached out to exert a repellent effect and exhibit its sustainability. The method for repelling pests of polyester fiber products of the present invention can be applied to any shape of fiber products such as yarns, knits, woven fabrics and clothing made of polyester fibers. Properties can be imparted. In addition, repellent processed polyester fiber products can be worn as clothing for outdoor clothing, sports clothing, outdoor work clothing, sleeping bags, etc., or interior textile products such as curtains, carpets, tablecloths, etc.
It can be used as a textile product for exteriors such as a tent in a place that covers a living space, thereby preventing pest damage to the human body. Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto unless it exceeds the gist thereof. Example 1 N, N-diethyl-m-toluamide (5 g) was dissolved in isopropyl alcohol (10 g), and polyoxyethylene cetyl stearyl ether (ethylene oxide addition mole number: 2)
0) After adding 2.0 g, the mixture was diluted to 100 ml with water to obtain a clear aqueous solution. An aqueous solution diluted to 200 ml by adding water to 15 ml of this aqueous solution and a regular polyester 100% short fiber knit fabric (32th milling) 10
g was placed in a pressure vessel of a high-pressure test dyeing machine (Minicolor MC12EL manufactured by Texam Giken Co., Ltd.), sealed, set in the dyeing machine, and heated at 120 ° C. for 45 minutes. After the treatment, the treated cloth was taken out, washed sufficiently with water, and dried to obtain a treated cloth. The treated cloth obtained did not show any change in physical properties such as feeling and strength even before the treatment. After washing this processed cloth 10 times under the conditions of the JIS L0217 103 method, a repellent effect test of mosquitoes was performed using the unprocessed cloth as a control together with the finished cloth (worked cloth without washing) as follows. went. Table 1 shows the results. Test method for confirming repellent effect. Test cloth Finished cloth, processed cloth after repeating washing 10 times, unprocessed cloth. Test Method 30 adult female Aedes albopictus (mating finished about 7 days after emergence) were released into a mosquito breeding cage of about 30 × 30 × 30 cm, and 30 ± 2 ° C., humidity 60-
Under a condition of 70%, a cylindrical test cloth was wound on the human arm of the monitor and exposed into the cage for 2 minutes. During this time, 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) were counted, and A ×
100 / number of mosquitoes tested = resting rate (%), (BA) ×
Calculated as 100 / B = repellent rate (%). [Table 1] Example 2 N, N-diethyl-m-toluamide (0.4 g), polyoxy (N, N-diethyl-m-toluamide) (0.4 g) were dissolved in 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. 0.2 g of ethylene cetyl stearyl ether (20 moles of ethylene oxide added) and 1 ml of isopropyl alcohol
Was added and mixed to obtain 200 ml of an aqueous solution containing a dye and a repellent. This aqueous solution 2
00ml and 100% regular polyester staple plain woven cloth (120 counts / 2.54cm, 30th count 7
0 g / 2.54 cm) of 10 g was put 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 130 ° C. for 60 minutes. After the treatment, the treated cloth was taken out, washed sufficiently with water, and dried to obtain a treated cloth. The treated cloth obtained did not show any change in physical properties such as feeling and strength even before the treatment. Further, the dyed hue and the degree of the concentration were measured in the same manner as described above except that only N, N-diethyl-m-toluamide was prepared.
No difference was observed as compared with the case where staining was performed under the same conditions as above using 0 ml. Using the obtained work cloth and the work cloth after repeating the washing 10 times,
A mosquito repellency test was performed in the same manner as in Example 1 to determine the static rate and the repellent rate. Table 1 shows the results. 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 (the number of moles of ethylene oxide added: 20) Was placed in a 300 ml round bottom flask equipped with a reflux condenser, and heated at a reflux temperature for 45 minutes. After the treatment, the treated cloth was taken out, washed sufficiently with water, and dried to obtain a treated cloth. A mosquito repellent effect test was carried out in the same manner as in Example 1 using the obtained processed cloth and the processed cloth which was further washed 10 times, and the static rate and the repellent rate were obtained. Table 1 shows the results. Comparative Example 2 3 g of 2-hydroxyethyloctyl sulfide was dissolved in 6 g of isopropyl alcohol, and 1.5 g of polyoxyethylene stearyl ether (the number of moles of ethylene oxide added: 20) was added, followed by dilution with water to 100 ml. A clear aqueous solution was obtained. The aqueous solution diluted to 200 ml by adding water to 15 ml of this aqueous solution and 10 g of a regular polyester 100% short fiber knitted cloth similar to that used in Example 1 were placed in a pressure vessel of the high-pressure test dyeing machine used in Example 1, It closed, set to the same dyeing machine, and performed heat processing at 120 degreeC for 45 minutes. After the treatment, the treated cloth was taken out, sufficiently washed with water, and dried to obtain a processed cloth. A mosquito repellent efficacy test was performed in the same manner as in Example 1 using the obtained work cloth and the work cloth that was repeatedly washed 10 times, and the static rate and the repellent rate were obtained. Table 1 shows the results. As shown in Table 1, all of the comparative examples had excellent repellency after finishing the processing, but the effect was remarkably reduced and the washing resistance was inferior when the washing was repeated. Nos. 1 and 2 exhibited excellent effects both at the end of processing and after washing, and had good washing resistance. Examples 3 to 6 20 g of N, N-diethyl-m-toluamide were mixed with 5.0 g of polyoxyethylene phenyl ether (the number of moles of ethylene oxide added: 10). The oil-in-water type stable emulsion (concentration: 20%) was added little by little. To this emulsion was added water in the proportions shown in Table 2 to prepare a 200 ml treatment solution, and this was mixed with the same regular polyester 10 as used in Example 1.
10 g of the 0% short fiber knitted fabric was placed in the pressure vessel of the high-pressure test dyeing machine used in Example 1, sealed, set on the same dyeing machine, and heated at 120 ° C. for 45 minutes. After the treatment, the treated cloth was taken out, washed sufficiently with water, and dried to obtain a treated cloth. A blank treated with water in the same conditions and in the same process as above was used as a blank cloth, and the mosquito was treated in the same manner as in Example 1 using the blank cloth, the processed cloth obtained above, and the processed cloth repeatedly washed 10 times. A repellency test was performed to determine the static rate and the repellent rate. Table 2 shows the results. [Table 2] As shown in Table 2, Examples 3 to 6 show a repellent effect and excellent washing resistance according to the applied amount, and the polyester fibers are immersed in an aqueous solution of N, N-diethyl-m-toluamide. As a result of heat treatment under pressure, N, N-diethyl-m-toluamide penetrates and diffuses into the interior of the fiber, and even if N, N-diethyl-m-toluamide on the fiber surface is washed off and washed off, It is presumed that the phenomenon of seeping out from the inside exerts an effect excellent in washing resistance and durability. Examples 7 to 12 0.75 g of N, N-diethyl-m-toluamide, 1.5 g of isopropyl alcohol and polyoxyethylene cetyl stearyl ether (number of moles of ethylene oxide added: 20) prepared in the same manner as in Example 1 200 g of an aqueous solution containing 0.3 g of the aqueous solution, 10 g of a 100% short fiber knitted fabric of cationic dye-dyeable polyester and 10 g of the same were put into a pressure vessel of a high-pressure test dyeing machine used in Example 1, and sealed.
It was set in the dyeing machine and heat-treated under the conditions shown in Table 3 to obtain a work cloth. A repellent test for mosquitoes was performed on the obtained processed cloth in the same manner as in Example 1 to determine a static rate and a repellent rate. Table 3 shows the results. [Table 3] As shown in Table 3, in the range of the processing conditions of Examples 7 to 12, a good repellent effect can be obtained both after finishing the processing and after washing 10 times without changing the physical properties of the fibers. The best repellent effect was obtained under the processing conditions of 7 to 9 and 11. In Examples 10 and 12, although the repelling effect after washing 10 times was better than Comparative Examples 1 and 2, the repelling effect at the time of finishing the processing tends to be slightly lower than in Examples 7 to 9, and in Example 11, Considerable shrinkage and hardening were observed in the work cloth. As described above, the pest repellent processing method for a polyester fiber product of the present invention specifies a repellent and a fiber and performs a specific treatment. The polyester-based fiber product which permeates and diffuses from the surface of the product to the inside to give a blood-sucking pest a repellent effect with excellent washing resistance and durability, and which has no change in fiber texture and physical properties. Compared to 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)

(57) Patent Claims 1. A N, N-diethyl--m- polyester based textiles and immersed in an aqueous solution containing toluamide, sealing pressure
A pest repellent processing method for polyester-based fiber products, wherein the heat treatment is performed at 110 to 140 ° C for 10 minutes or more under pressure .