JP2000248466A - Insect-proof fiber and fiber product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fiber capable of enhancing initial performance of insect- proof agents and exhibiting the ability over a long period. SOLUTION: This insect proof fiber comprises 0.2-10.0 wt.% either one of an antistatic agent, a surfactant or a lubricant on the surface of a thermoplastic synthetic fiber containing 0.1-5.0 wt.% substance having insect proof or/and repelling effect by kneading or comprises a core-sheath conjugate fiber containing, as a core component, a thermoplastic polymer in which a substance having insect proof or/and repelling effect is kneaded and containing, as a sheath component, a thermoplastic polymer containing 0.2-10.0 wt.% either one of an antistatic agent, a surfactant and a lubricant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to insect repellent fibers used for textile products in which mites are pointed, such as rugs, batting, side lining, and blankets. It is intended to provide excellent insect repellent fiber.

[0002]

2. Description of the Related Art Conventionally, as insect repellent fibers called mite-inhibiting fibers, a substance having an insect repellent or / and repellent effect (hereinafter sometimes abbreviated as an insect repellent) is attached to the fiber surface by post-processing. And those kneaded in fibers have been commercialized.

[0003]

However, in the case where the insect repellent is adhered to the fiber surface by post-processing, the effect can be obtained to a certain extent in the initial consumption performance, but the effect is significantly reduced by home washing or industrial washing. There was something to do. On the other hand, when the insect repellent is kneaded into the fiber, the effect tends to decrease in the above-described washing process, but it does not significantly decrease, but the initial effect is low. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the knitted fiber of the insect repellent and the insect repellent have high consumption performance in the initial stage, and the decrease is very small even in the process of washing. Another object of the present invention is to provide an insect repellent fiber having both properties of a fiber obtained by post-processing.

[0005]

Means for Solving the Problems In order to determine the durability of insect repellent performance, kneading fibers in which an insect repellent is kneaded into fibers are premised. However, fibers of this system have low initial performance,
As a result of investigating the cause, it was found that there was a problem in bleeding of the insect-controlling agent kneaded inside the fiber onto the fiber surface. Therefore, the present invention has made intensive studies on a technique for satisfactorily bleeding the insect repellent on the fiber surface, and has reached the present invention.

[0006] By the way, although the aim of the treatment of the fiber is different, there is a white discharge method as one method of dyeing a fiber product. This is a technique in which a dye (dye molecule) of a dyeing object is bleed to the fiber surface using a chemical and decolorized by oxidation or reduction. As the chemical, a surfactant is usually used, and a discharging agent is used. It is called. In addition, some antistatic agents reduce the fastness to friction, which also presumably has the same effect as the above-described discharge agent, and causes the dye to bleed on the fiber surface. It is known that when a surfactant or an antistatic agent is adhered to an object to be dyed as described above, the dye molecules have an ability to bleed near the fiber surface.

According to the present invention, an insect repellent is kneaded into a synthetic fiber, and the insect repellent in the fiber is satisfactorily bleed on the surface of the fiber. It is intended to realize a fiber that can be exhibited by using it.

[0008] That is, the invention of claim 1 provides an antistatic agent on a surface of a thermoplastic synthetic fiber in which a substance having an insect repellent and / or repellent effect is incorporated by 0.1 to 5.0% by weight. 0.2 to either surfactant or leveling agent
Insect repellent fiber given 10.0% by weight. The invention according to claim 2 provides a core component, an antistatic agent, and a thermoplastic polymer in which a synthetic fiber contains a substance having an insect repellent or / and repellent effect by 0.1 to 5.0% by weight. 0.1 to 5.0 of at least one of the agents or leveling agents.
An insect repellent fiber comprising a core-sheath conjugate fiber having a thermoplastic polymer incorporated by weight as a sheath component. The invention according to claim 3 is characterized in that the substance having an insect repellent or / and repellent effect is N, N-diethyl-m-toluamide, pyrimidine derivative, pyrimidine derivative, piperidine derivative, xanthogen derivative, azepine derivative, pipecoline derivative, morpholine Derivatives, pyrrolidine derivatives, quinones, divalent alcohols, phthalates, 2,3,4,5-
Bis (delta ₂ - butylene) - tetrahydrofurfuryl hula - le,
The insect-controlling fiber according to claim 1 or 2, wherein the insect-controlling fiber is at least one member selected from the group consisting of di-n-propyl propyl isosine comeronate, di-n-butyl succinate, and 2-hydroxyethyl octyl sulfide. The invention according to claim 4 is characterized in that the antistatic agent or the surfactant is
N, N-bis (2-hydroxyethyl) alkylamine, alkylsulfonate, alkylbenzenesulfonate, fatty acid choline ester, polyoxyethylene alkyl ether and its phosphoric ester and salt, fatty acid monoglyceride, fatty acid sorbitan The insect repellent fiber according to claim 1, which is at least one member selected from partial esters. The invention according to claim 5 is the insect-controlling fiber according to claim 1 or 2, wherein the leveling agent is an amino-modified silicone compound or / and dimethylpolysiloxane.

The thermoplastic synthetic fiber of the present invention includes, for example,
Polyester such as polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate; polyamide such as nylon 6, nylon 66 and nylon 12; polyolefin such as polyethylene and polypropylene; ethylene-vinyl alcohol copolymer and the like Are typical examples, but are not necessarily limited to these. These may be used alone or as a mixture of two or more,
It may be a copolymer.

[0010] The fiber of the present invention may be a single fiber composed of a single component in which the insect repellent is kneaded, or a core component in which the component in which the insect repellent is incorporated and a component in which the insect repellent is not incorporated. May be a core-in-sheath type composite fiber having a sheath component.

In the case of the former fiber, an antistatic agent, a surfactant, or a leveling agent that bleeds the kneaded insect repellent (hereinafter sometimes collectively referred to simply as a bleed accelerator) may be used. What is necessary is just to apply | coat to the surface of this fiber, and in the case of the latter fiber, what is necessary is just to employ | adopt the method of kneading a bleeding accelerator in a sheath component. In the present invention, in the case of a conjugate fiber, the bleed accelerator is kneaded and contained in the sheath component, but is not contained in the sheath component, but is applied to the surface of the fiber to apply the bleed accelerator to the conjugate fiber. This includes the case where it is present on the surface.

The adhesion on the fiber surface may be carried out by employing ordinary application means and conditions such as the antistatic agent. The kneading into the sheath component is the same as the kneading of the insect repellent. ,
Normal kneading means may be employed.

Examples of insect repellents kneaded and contained in fibers include N, N-diethyl-m-toluamide, pyrimidine derivatives, pyrimidine derivatives, piperidine derivatives, xanthogen derivatives, azepine derivatives, pipecoline derivatives, morpholine derivatives, pyrrolidine derivatives, Quinones, divalent alcohols, phthalates, 2,3,4,5-
Bis (delta ₂ - butylene) - tetrahydrofurfuryl hula - le,
At least one substance selected from the group consisting of di-n-propyl propyl isosine comelonate, di-n-butyl succinate, and 2-hydroxyethyl octyl sulfide.

The kneading content of the insect repellent is 0.1
If it is less than 5% by weight, its insect repellent effect cannot be exhibited, and 5% by weight
If the ratio exceeds the above range, a problem occurs in fiber formation, which is not preferable. Therefore, the content is 0.1% by weight or more and 5.0% by weight or less. More preferably, it is 0.2 to 1.0% by weight.

As bleeding accelerators to be coated or kneaded on the surface or at the surface of the fiber, N, N
N-bis (2-hydroxyethyl) alkylamine, alkyl sulfonate, alkylbenzene sulfonate,
At least one or more antistatic agents or surfactants selected from fatty acid choline esters, polyoxyethylene alkyl ethers, phosphate esters and salts thereof, fatty acid monoglycerides, and fatty acid sorbitan partial esters; or amino-modified silicones Examples include compounds and / or leveling agents such as dimethylpolysiloxane.

The amount of the bleeding accelerator attached to the upper surface of the fiber must be 0.2 to 10.0% by weight. If the amount of adhesion on the fiber is less than 0.2% by weight, the amount of bleed on the fiber surface of the kneaded insect repellent is low, and the performance of the insect repellent is insufficient. On the other hand, if the adhesion amount exceeds 10.0% by weight, stickiness on the fiber surface increases, which is not economically preferable. The preferred amount is 0.5 to 3.0% by weight.

Alternatively, when the bleeding accelerator is contained in the inner surface portion of the fiber, the content must be 0.1 to 5.0% by weight. When the content in the fiber is less than 0.1% by weight, the bleeding amount of the kneaded insect repellent on the fiber surface is low, and the performance of the insect repellent is insufficient. On the other hand, if the content exceeds 5.0% by weight, it is not preferable for fiber production. In this case, the content is more preferably 0.5 to 3.0% by weight.

For example, when an insect repellent is kneaded into the core of a core-sheath type conjugate fiber made of polyester, a small amount of the insect repellent is bleed into the sheath component by the heat of the spinning step, and in some cases, smoke is generated. There are even things to do. However, even if the above-mentioned heat is applied during the spinning process, the amount of the drug present on the fiber surface is extremely small, and if no measures are taken to aggressively improve the bleeding property, the fiber of the insect repellent used may not be used. The amount of the drug existing near the surface is only about 0.4% of the amount of the drug kneaded into the core, and is insufficient to exhibit the insect repellent effect. On the other hand, polyoxyethylene alkyl ether as a bleed accelerator is provided on the surface of the core-sheath type composite fiber.
When a 2% aqueous solution of tellurium is applied and then heat-treated at 130 ° C. for 5 minutes, the amount of the drug existing near the fiber surface becomes 5.0% of the amount of the drug kneaded into the core. As a result, good performance can be obtained in the initial stage and in washing and the like in terms of consumption performance.

It is an interesting phenomenon that even when the bleeding accelerator is present not only on the fiber surface but also on the inner surface of the fiber, the bleeding of the insect repellent to the fiber surface is an interesting phenomenon. This is also effective from the viewpoint of the durability of the activity performance of the fiber. That is, for example, in the case of a core-sheath type polyester composite fiber in which dimethylpolysiloxane as a bleed accelerator is kneaded in a sheath portion in a core portion in which the insect repellent agent is kneaded, the amount of the drug which is bleed on the fiber surface Is 3.7 times the amount of the same drug kneaded into the core.
%, And the repellency by the intrusion prevention method also increased to the 90% range, confirming that good repelling performance was exhibited. In addition, in order to investigate the durability of the fiber, even if the fiber was subjected to an accelerated test at 81 ° C./52 hours, the repellency ratio hardly changed, indicating that the fiber maintained its performance for a long time.

[0020]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. In the present invention, performance evaluation was performed by the following intrusion prevention method.

<Intrusion Prevention Method> Approximately 90 outside diameter on the adhesive sheet
A mite medium having a height of 15 mm was fixed, a mite culture medium was placed in the dish, and about 10,000 solids of well-reproduced mites were charged as living mites thereon and spread uniformly. Small shear with outer diameter of 35mm and height of 10mm in the center
Put on. A test sample cut in advance to a diameter of about 35 mm is laid on this small dish, and 0.05 g of a powdered feed free of mites is placed at the center thereof. This set together with the adhesive sheet was stored in a plastic container for food preservation kept at a humidity of 75 ± 5% Rh with a saturated saline solution for 24 hours (+2 hours) in a constant temperature incubator at 25 ± 1 ° C. Up to)
The total number of live mites is counted. Repeat for the control diet as well. The test was repeated 5 times in consideration of variation,
The repellent rate is calculated from the total number of live mites on each sample.
The repellent rate was calculated by the following equation.

Repellent rate = (number of invading mites in control plot−number of invading mites in test plot) / number of invading mites in test plot × 100

The drug concentration was analyzed by the following method. <Analysis of drug concentration> (1) Total weight of drug: 2 g of raw cotton was extracted with chloroform and quantified by gas chromatography. The numerical values indicate the amount of drug in 200 mg of raw cotton. (2) Surface concentration analysis: 2 g of raw cotton was washed with methyl alcohol on the fiber surface, and then quantified by liquid chromatography. The numerical values indicate the amount of drug in 200 mg of raw cotton.

The durability evaluation is an evaluation in the following processing. (1) Heat resistance evaluation: Performance evaluation after treating a sample cotton at 81 ° C. for 52 hours. (2) Washing durability: L-0217 103 method Performance evaluation after washing three times.

Example 1 12% by weight of insect repellent containing phthalic acid as a main component in polyethylene terephthalate pellets
, And kneaded with a single screw extruder at a temperature of 280 ° C to obtain a master chip. This master chip was mixed and diluted with a drug-free polyethylene terephthalate to obtain a core component polymer (insecticide concentration: 1% by weight). Drug-free polyethylene terephthalate was used as the sheath component polymer. The above two-component polymer,
Supply to the core and sheath of the core-sheath composite spinning device,
390 g / min of discharge amount at the core, 390 g / min.
At a spinning temperature of 295 ° C., and a winding speed of 900 m /
In a minute, a core-sheath composite fiber was obtained. The fiber is stretched, crimped and heat-treated by a known method, and then denier 6d, cut length 51
mm of short fiber raw cotton was obtained. For this raw cotton, a polyoxyethylene alkyl ether is used, which
After the application to give a weight%, a heat treatment was performed at 130 ° C. for 5 minutes to obtain the insect-controlling fiber of the present invention.

Example 2: The raw cotton of Example 1 was used, and the raw cotton was replaced with a reactive amino-modified silicone and diaminosilicone in a one-to-one ratio instead of the polyoxyethylene alkyl ether used in the same example. After applying 0.3% by weight of the solution mixed at 130 ° C., heat treatment was performed at 130 ° C. for 5 minutes to obtain insect-controlling fibers.

Example 3 As the core component polymer, the same polymer as in Example 1 having an insect repellent concentration of 1% by weight was used.
As a sheath component polymer, a master chip blended with 11% by weight of dimethylsiloxane was obtained, and then polyethylene terephthalate containing no drug was mixed and diluted to use polyethylene terephthalate containing 1% by weight of dimethylsiloxane. The core component polymer and the sheath component polymer were respectively supplied to a core-sheath type composite fiber spinning apparatus, and a discharge amount of 39
Spinning was performed at 0 g / min to obtain raw short fiber containing an insect repellent in the core and a surfactant in the sheath under the same method and conditions as in Example 1.

Comparative Example 1: As a polymer for the core component, polyethylene terephthalate pellets were blended with the same insect repellent as in Example 1 at a blending amount of 12% by weight, and the mixture was heated at 280 ° C. in a single screw extruder. To obtain a master chip. This master chip is mixed and diluted with a drug-free polyethylene terephthalate, and the concentration of the insect repellent is 1% by weight.
Contained polymer. Drug-free polyethylene terephthalate was used as the polymer for the sheath component. The polymer for the core component and the polymer for the sheath component are supplied to a core-sheath type composite spinning apparatus, and the discharge amount is 390 g / min and the spinning temperature is 29.
Spinning was performed at 5 ° C. to obtain a core-in-sheath composite fiber at a winding speed of 900 m / min. The fiber was stretched, crimped, and heat-treated by a known method to obtain a raw short fiber having a denier of 6d and a cut length of 51 mm.

Comparative Example 2: Using the raw cotton of Example 1, 0.1% by weight of a polyoxyethylene alkyl ether was applied to the fiber surface of the raw cotton, and then heat-treated at 130 ° C. for 5 minutes to prevent insect fibers. I got

Comparative Example 3: Using the raw cotton of Example 1, 12.0% by weight of polyoxyethylene alkyl ether was applied to the fiber surface of the raw cotton, and then heat-treated at 130 ° C. for 5 minutes to prevent insect fibers. I got

Table 1 shows the properties of the insect-controlling fibers obtained in the above Examples and Comparative Examples.

[0032]

[Table 1]

As shown in Table 1, the insect-controlling fiber of the present invention can stably and continuously exert its effect without reducing the repellent performance of mites in initial and durability tests. Comparative Example 1 in which the polyoxyethylene alkyl ether was not treated on the fiber surface and Comparative Example 2 in which the amount of treatment was small had a low repellent rate of mites and the effect was insufficient. Further, in Comparative Example 3, the fiber surface was very sticky and had no commercial value.

[0034]

The technique of the present invention is an effective one in which an organic drug kneaded in a thermoplastic synthetic fiber is bleed on the fiber surface to express the function or performance of the drug itself from the beginning with good durability. It is. In other words, the insect repellent fiber of the present invention has the durability to exhibit its insect repellent and repellent performance against pests such as mites from the initial stage, and to continuously exhibit a long-term stable effect without reducing the repellent performance. Yes, it can be effectively used for rugs, futon batting, side lining and blankets. Needless to say, the fiber shape of the fiber of the present invention may be either a long fiber such as a filament or a short fiber such as a staple.

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Claims (6)

[Claims] 1. An antistatic agent, a surfactant or a smoothing agent on the surface of a thermoplastic synthetic fiber in which a substance having an insect repellent and / or repellent effect is incorporated by 0.1 to 5.0% by weight. Insect repellent fibers obtained by adding 0.2 to 10.0% by weight of the above. 2. A thermoplastic polymer containing 0.1 to 5.0% by weight of a substance having an insect repellent and / or repellent effect is incorporated into at least a core component, an antistatic agent, a surfactant or a smoothing agent. An insect repellent fiber comprising a core-sheath conjugate fiber, comprising a sheath component comprising a thermoplastic polymer kneaded with one kind in an amount of 0.1 to 5.0% by weight. 3. The substance having an insect repellent or / and repellent effect is N, N-diethyl-m-toluamide, pyrimidine derivative, pyrimidine derivative, piperidine derivative, xanthogen derivative, azepine derivative, pipecoline derivative, morpholine derivative, pyrrolidine derivative. , Quinones, divalent alcohols, phthalates, 2,3,4,5-
Bis (delta ₂ - butylene) - tetrahydrofurfuryl hula - le,
The insect-controlling fiber according to claim 1, wherein the insect-controlling fiber is at least one selected from the group consisting of di-n-propyl propyl isosine comeronate, di-n-butyl succinate, and 2-hydroxyethyl octyl sulfide. 4. The method according to claim 1, wherein the antistatic agent or the surfactant is N, N
-Bis (2-hydroxyethyl) alkylamine, alkyl sulfonate, alkylbenzene sulfonate, fatty acid choline ester, polyoxyethylene alkyl ester
The insect-controlling fiber according to claim 1, wherein the insect-controlling fiber is at least one selected from tere, its phosphate ester and its salt, fatty acid monoglyceride, and fatty acid sorbitan partial ester. 5. The method according to claim 1, wherein the leveling agent is an amino-modified silicone compound or / and dimethylpolysiloxane.
Or the insect repellent fiber according to 2. 6. A fiber product comprising the insect-controlling fiber according to any one of claims 1 to 5.