JP2794590B2 - Insect net - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to flies, mosquitoes, fleas, mites, cockroaches, ants,
The present invention relates to a net made of synthetic resin for controlling pests such as burs and beetles.

[Conventional technology]

In recent years, changes in the living environment have greatly affected the habitat patterns of various pests, and flies, mosquitoes, cockroaches, and various other pests are becoming a social problem.

For example, the habit of general cleaning has disappeared, and the housing environment has become hot and humid due to the increase in the number of concrete apartment buildings, leading to the inhabitation of fine pests such as house dust mites and stag bees. As development spreads to rural areas and mountainous areas, damage and complaints from discomfort pests such as black ants, termites, gnats, chironomids, and mosquitoes that enter homes from the outdoors are increasing.

On the other hand, due to the spread of pets such as dogs and cats, fleas, lice and ticks attached to these have become important targets for pest control, and there have been many reports of damage to clothing pests that damage clothing, blankets, futons, carpets, etc. Have been.

 To control these pests: 1. Release the drug towards the pest.

2. Wait for the pest to come in contact with the pre-applied drug.

There are two cases. The former type, for example, mosquito coils, aerosols, smokers, etc. are the mainstream of household insecticides, but from the viewpoints of usability, sustainability of efficacy, safety, etc. A review of the latter is required.

In particular, insect repellent sheets and insect repellent nets have been laid, wrapped, and used simply by being hung, and various developments have been attempted, for example, Japanese Patent Application Laid-Open No. Sho 62-155039.
In the publication, a pest control net formed by heating or molding a chlorinated polyethylene, a thermoplastic elastomer, and an amide repellent alone or in a mixture, and Japanese Utility Model Publication No. 62-44001 discloses an insecticide or a pesticide. On the other hand, there has been disclosed a multilayer resin film in which a saturated absorption amount is 0.5% by weight or more and a layer made of a resin having a saturation absorption amount of 0.8% by weight or less is provided on both surfaces of a layer made of a resin having a weight percentage of 10% or less. There is usability,
At present, it is not enough in terms of efficacy.

[Problems to be solved by the invention]

In general, insect repellent sheets and nets are used in kitchen floors, cupboards, under sinks and refrigerators, under carpets and tatami mats, in closets and drawers, clothes covers,
A kennel curtain, a floor sheet, or a mesh jacket for dogs and cats are conceivable. In many cases, it is required to prevent deterioration in quality or to provide air permeability for hygiene, and an insect-proof net type is more preferable.

Incidentally, the invention disclosed in Japanese Patent Application Laid-Open No. 62-155039 relates to a synthetic resin net containing an amide-based repellent, but the amide-based repellent has poor volatility at room temperature and is a main ingredient of the repellency. Therefore, there is a problem that the insect repellent effect is not sufficient, and the use is further limited.

[Means for solving the problem]

In view of the above-mentioned situation, the present inventors have conducted intensive studies with the aim of developing a formulation that exhibits high insecticidal efficacy in a wide range of use while taking advantage of the insect repellent net, and as a result, it is effective for ethylene-vinyl acetate resin. As a component, a normal temperature volatile pyrethroid empentrin or a mixed drug of empentrin and normal temperature low volatility pyrethroid is blended in an amount of 0.1 to 5.0% by weight based on the total amount, and the yarn thickness is 0.2 to 1 mm and the mesh size is 2 The present inventors have found that an insect repellent net formed by heat molding into a net shape of about 10 mm is suitable for the purpose and completed the present invention.

In other words, while empentrin kills pests that touch the insect-controlling net, it gradually evaporates from the resin, so the insect-controlling effect spreads to the surrounding space. Applicable.

Empentrin used in the present invention is a conventional clothing insect repellent paradichlorobenzene, naphthalene, insecticidal effect, higher in safety than camphor, insect impregnants and films impregnated in a mat and stored in a plastic case Although it has recently spread as an insect repellent sheet, no attempt has been made to use an insect repellent net due to manufacturing problems.

However, the present inventors have found that by molding using a synthetic resin mainly composed of an ethylene-vinyl acetate-based resin, there is no excessive oozing to the surface of the drug, and furthermore, to obtain an insect repellent net taking into account sustained release. Reached.

In the insect repellent net of the present invention, other pesticidal agents are appropriately compounded as an active ingredient in addition to the empentrin.

As the insecticide, a pyrethroid compound is preferable from the viewpoint of efficacy and safety, and the following compounds can be exemplified.

(A) 3-allyl-2-methylcyclopenta-2-en-4-one-1-yl dl-cis / trans-chrysanthemate (generic name aresulin: trade name pinamine: manufactured by Sumitomo Chemical Co., Ltd.) b) 3-allyl-2-methylcyclopenta-2-en-4-one-1-yl d-cis / trans-chrysanthemate (trade name: pinamine forte: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, insecticide) A) (c) d-3-allyl-2-methylcyclopenta-2-
En-4-one-1-yl d-trans-chrysanthemate (trade name: Exulin: manufactured by Sumitomo Chemical Co., Ltd.) (d) 3-allyl-2-methylcyclopenta-2-en-4-one-1 -Yl d-trans-chrysanthemate (generic name bioarrestrin) (e) 2-methyl-4-oxo-3- (2-propynyl) cyclopenta-2-enyl chrysanthemate (f) (S) -2- Methyl-4-oxo-3- (2-propynyl) cyclopenta-2-enyl d-cis / trans-chrysanthemate (general name: plerethrin, hereinafter abbreviated as insecticide B) (g) N- (3,4, 5,6-tetrahydrophthalimido) methyl d-cis / trans-chrysanthemate (generic name: phthalsulin: trade name neopinamine forte: manufactured by Sumitomo Chemical Co., Ltd.) (h) 3-phenoki Benzyl 2- (4-ethoxyphenyl) -2-methylpropyl ether (generic name: ethofenprox) (i) 5-benzyl-3-furylmethyl d-cis / trans-chrysanthemate (generic name resmethrin: trade name) (Chrislon Forte: manufactured by Sumitomo Chemical Co., Ltd., hereinafter abbreviated as insecticide C)) (j) 5-propargyl-2-furylmethyl chrysanthemate (common name: flamemethrin) (k) 5-propargyl-2-furylmethyl d -Cis / trans-chrysanthemate (trade name: Pinamine D Forte: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter abbreviated as insecticide D) (l) 3-phenoxybenzyl 2,2-dimethyl-3-
(2,2-dichlorovinyl) cyclopropanecarboxylate (generic name: permethrin: trade name: Exmin: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter abbreviated as insecticide E) (m) 3-phenoxybenzyl d-cis / trans-
Chrysanthemate (generic name phenothrin: trade name Smithrin: manufactured by Sumitomo Chemical Co., Ltd., hereinafter abbreviated as insecticide F) (n) α-cyano-3-phenoxybenzyl α-isopropyl-4-chlorophenyl acetate (generic name Fenvale Rate: trade name Sumicidin, manufactured by Sumitomo Chemical Co., Ltd.) (o) (S) -α-cyano-3-phenoxybenzyl
(S) -α-isopropyl-4-chlorophenyl acetate (generic name esfenvalerate) (p) (S) -α-cyano-3-phenoxybenzyl (1R, 3R) -3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (q) (RS) -α-cyano-3-phenoxybenzyl (1RS) -cis / trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclo Propane carboxylate (generic name cypermethrin) (r) α-cyano-3-phenoxybenzyl d-cis / trans-chrysanthemate (generic name cyphenothrin; hereinafter abbreviated as insecticide G) (s) α-cyano- 3-phenoxybenzyl 2,2,3,3
-Tetramethylcyclopropanecarboxylate (generic name fenpropatrin) (t) [(pentafluorophenyl) -methyl] (1R, 3
R) -3- (2,2-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (generic name fenfluthrin) (u) 3-allyl-2-methyl-cyclopenta-2-en-4-one -1-yl 2,2,3,3-tetramethylcyclopropanecarboxylate (general name teraresulin) (v) 1-ethynyl-2-methyl-2-pentenyl 2,
2-dimethyl-3- (2,2-dichlorovinyl) cyclopropanecarboxylate (w) dimethyl (4-ethoxyphenyl) {3- (3-
Phenoxy-4-fluorophenyl) propyl} silane (hereinafter abbreviated as insecticide H) In addition to the above, organophosphorus insecticides such as fenitrothion, diazinon, and pyridifenthion, NAC, MTM
Carbamate insecticides such as C and PHC can also be used.

In particular, when empentrin is used in combination with a low-volatility pyrethroid insecticide such as insecticide E, insecticide F, insecticide G, and insecticide H, not only the insecticidal effect of empentrin volatilization but also long-lasting pyrethroids are prolonged. It exerts an insecticidal effect by contact over a long period of time, and a double effect can be expected.

Further, repellents such as N, N-diethyl-m-toluamide, N-butylacetanilide, N, N-diethylsuccinamate, and 2,4,4′-trichloro-2′-hydroxydiphenyl ether, 2,3, 5,6-tetrachloro-4-
Disinfectant such as (methylsulfonyl) pyridine, alkylbenzyldimethylammonium chloride, N- (fluorodichloromethylthio) phthalimide, N-trichloromethylthiotetrahydrophthalimide, manganese ethylenebis (dithiocarbamate), or, if necessary, a stabilizer; A multipurpose insect repellent net having an excellent effect can be obtained by appropriately mixing a power agent, a deodorant, a fragrance, a pigment, and other auxiliaries.

Empentrin alone or a mixture thereof with other pesticides as described above generally exhibits a remarkable insect-controlling effect when incorporated in an amount of 0.1 to 5.0% by weight based on the total weight of the resin. An appropriate amount of a filler may be blended.

The present invention is characterized in that the above insecticidal composition is blended with an ethylene-vinyl acetate-based resin and heat-molded. Resins such as polyethylene, polypropylene, and polyvinyl chloride were also considered, but these resins were not preferable because the molding temperature was high and the decomposition of the insecticidal composition was concerned.

In addition, when empentrin comes in contact with metallic copper itself or wrapping paper printed with ink containing metallic copper,
It is known that discoloration and stains can be generated on clothing stored for discoloration and insect repellency, but surprisingly, when blended with ethylene-vinyl acetate resin, polyethylene or polypropylene The degree of causing discoloration and spots was suppressed to a very low level as compared with that of the above, and it became clear that this point was also extremely advantageous.

In carrying out the present invention, ethylene-vinyl acetate copolymer as a main component, suitably blended with a suitable polymer for the purpose of homogenization and sustained release is suitably used, insecticidal composition, resin mixture, For example, it is formed into a net shape by an extruder.

The thickness and mesh size of this net thread can be freely changed depending on the target pest.For example, when used as a carpet or a tatami mat, the thread thickness is about 0.3 to 1 mm, It is appropriate that the size is about 2 to 10 mm, and when it is used for controlling insect pests, the thickness of the thread is about 0.2 to 0.5 mm, and the size of the mesh is about 2 to 4 mm. Is appropriate.

The insect repellent net of the present invention thus obtained is highly flexible, easy to bend and cut, and has excellent usability, and is stored in kitchen floors, cupboards, underlays of sinks and refrigerators, underlays of carpets and tatami mats, and in closets and drawers. Sheet, clothes cover,
It is applied to a kennel curtain, a floor sheet or a mesh jacket of a pet such as a dog or a cat by being laid, suspended, or pasted, and has a high insect repellent effect.

Particularly, in the closed state, the utility of the insect repellent net is useful in cases where the use of insect repellent sheets is undesirable, such as in leather products and furs where molds are likely to grow or the quality of the products is concerned, or for pet animals that require air permeability for deodorization and hygiene. Is remarkable.

Next, the present invention will be described in more detail with reference to examples, but it is needless to say that the present invention is not limited to these examples.

Example 1 Using an ethylene-vinyl acetate copolymer and chlorinated polyethylene as a sustained release controller, the insecticidal compositions shown in the table below were mixed and molded by heating to form a thread having a thickness of 0.3 mm and a mesh size of 3 mm. I got an insect net.

As a comparative example, an insect repellent net formed using polypropylene was also subjected to the test.

Each test net was cut into a size of 10 × 10 cm, laid on the bottom of a 50-liter drawer, and four blankets were placed thereon. Five loggery larvae were released on a blanket every predetermined period to observe the state of food damage over a week, and the occurrence of discoloration was observed by bringing the wrapping paper printed using a brass net into contact with the net. did.

As a result of the test, the insect repellent net of the present invention showed a remarkable insect repellent effect of empentrin volatilized, and the effect was maintained for 9 months or more. On the other hand, when empentrin was not blended and only Diet or insecticide E was used, the insect repellent effect by volatilization could not be expected, so that it was unsuitable for use in controlling insect pests on clothing.

In the control nets 3 and 4 using polypropylene as a synthetic resin, discoloration was observed in the wrapping paper, whereas in the present invention net mainly composed of an ethylene-vinyl acetate copolymer, no discoloration was observed and its usefulness was observed. Was confirmed.

Example 2 Using the insect-controlling nets 2 and 3 of the present invention in Example 1, a jacket was wound around the torso of a dog. When worn on dogs with lice and observed 3 days later, no lice were found to be alive.

In addition, when the insect repellent sheet prepared with the same composition was worn on a dog, peeling and rash were observed on the body surface, and it became clear that a net having high air permeability was suitable.

Example 3 1 × 1 using the insect repellent nets 2 and 4 of the present invention of Example 1.
make a kennel for a floor seat m ^2, it was laid on top of the artificial grass in the vicinity of the entrance of the kennel.

The insect repellent net not only prevents cockroaches, ants, mites, etc., but also prevents mosquitoes and gnats from flying. Effective against pests and helped maintain dog health.

Further, unlike the insect repellent sheet, the dog did not lose the feel of artificial turf preferred by dogs, and was excellent in hygiene.

〔The invention's effect〕

The present invention provides an insect repellent net excellent in all aspects of usability, efficacy and cost by blending empentrin which is a normal-temperature volatile volatile pyrethroid and selecting the material of a synthetic resin film.

Claims (1)

(57) [Claims] 1. An ethylene-vinyl acetate resin blended with 0.1 to 5.0% by weight of empentrin or a mixed drug of empentrin and normal temperature and low volatility pyrethroid with respect to the total amount, and has a thread thickness of 0.2 to 1 mm and a mesh An insect repellent net, which is formed by heating and forming a net having a size of 2 to 10 mm.