JPH1059802A - Heat evaporation removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for extinguishing heat transpiration which exhibits an excellent control effect on mites and the like living indoors and is highly safe for the human body. SOLUTION: The following formula (where X ₁ and X ₂ are chlorine and / or
Or a methyl group) as a control component by immersing a part of the liquid absorbing core in a solution containing the compound represented by the formula Heating and evaporating the absorbed solution so as to evaporate. Embedded image

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called heat transpiration and extermination method, and more particularly to a heat transpiration and elimination method which is highly safe for the human body and exhibits an excellent control effect on pests, especially mites, which live indoors. .

[0002]

2. Description of the Related Art Indoor mites (hereinafter referred to as "ticks")
) Mainly inhabit and breed in humid places such as rugs such as floors, tatami mats and carpets, futons and sofas. The mites, particularly indoor dust mites, are considered to be important causes of bronchial asthma, allergic rhinitis, atopic dermatitis and the like, and have been a problem in recent years. Drying is the most effective way to control mites, but recent housing structures are highly airtight and air-conditioned, making them suitable for mite breeding. Accompanying this, the damage caused by mites tends to increase.

[0003] Therefore, various drugs have been studied for the purpose of extermination of such mites. For example, a water-insoluble acaricide composition of benzyl benzoate and a fatty acid ester (Japanese Unexamined Patent Publication No.
-122702), an acaricide containing N, N-diethyl-m-toluamide as an active ingredient (JP-A-1-305005).
), An acaricide containing a trihaloimidazole derivative as an active ingredient (JP-A-1-203305), an essential oil of hinoki, cedar and hiba (JP-A-1-193204), and an acaricide containing L-menthon as an active ingredient (Japanese Unexamined Patent Publication No.
), An acaricide containing an extract from yellowfins as an active ingredient (Japanese Patent Application Laid-Open No. 64-13007), and an acaricide using an extract from citrus peel and seeds as an active ingredient (Japanese Patent Application Laid-Open No. 8
No. 3006), an acaricide containing an aromatic sulfonamide or a derivative thereof as an active ingredient (JP-A-63-230609)
No.), tricyclohexyltin hydroxide, isopropyl 4,4'-dibromobenzylate and 2,3-dihydro-2,2
An acaricide containing 2-dimethyl-7-benzo [b] furanyl = N-dibutylaminothio-N-methylcarbamate as an active ingredient (JP-A-63-130507).

In addition to these, pyrethroid-based acaricides which have been conventionally used as acaricides having high safety on the human body are also described as resin compositions containing pyrethrin, allethrin, phthalthrine, resmethrin, framethrin, phenothrin and permethrin as active ingredients. (JP-A-59-227)
No. 802), a composition comprising permethrin and phenothrin or a synergist and a pest repellent therefor (JP-A-60-1985)
142906), phenothrin, permethrin, resmethrin and 3'-phenoxybenzyl, 2,2,3
3-Tetramethylcyclopropanecarboxylate or a composition comprising it and a synergist and a pest repellent (JP-A-6
No. 0-163805), and in a method for controlling carpet rugs using an aerosol, empentrin is mentioned as an active ingredient (JP-A-60-172901).

On the other hand, JP-A-63-203649 discloses (+) 1R, 3S-trans-2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylic acid as a new pyrethroid insecticide. 2,3,5,6-
Tetrafluorobenzyl has been indicated, and this drug has been shown to be suitable for controlling pests, especially insects, that occur in the home or as sanitary pests or stored product pests. As Repisma,
Saccharina, cockroaches, cockroaches, Leucophair adelae, German cockroaches, cockroaches, Acaeta domesticus, and earwigs as Holficula auriclaris, termites as reticulitermes, lice as human white lice, hemiptera as bed bugs, rhodonium・ Prolixus, Triatoma infestans, Lepidoptera, Suzikonamamadameiga, Honeybee, Coleoptera: Anobium bunkutatum, Conanthus beetle, Hirotorpez bajurusu, Sawtooth beetle, Scrophularus, Cutis beetle, Species of Lepidoptera , Niptus holoreucus, Smar leopard beetle, Pterodactyla species, Hymenoptera:
Nigel, wasp, Aedes aegypti in Diptera, Anopheles spp., Culex pipiens, Musca domestica, Hymenoptera, P.
Nagano flea species are mentioned, but the action of the acaricide was not known at all.

[0006]

As an insecticide, particularly a tick-killing agent, it is required that the mite-killing action is strong, but its toxicity is low. Few satisfy simultaneously. Pyrethroid compounds are known to have low toxicity among flies, mosquitoes and other common insecticides so far, but this compound is generally inadequate in its efficacy against mites, When used as it was, it was not very effective. For this reason, among many pyrethroid compounds, a compound having excellent efficacy against insects including mite living indoors has been found, a useful pyrethroid-based pesticide has been developed, and a method of controlling with this has been proposed. It was desired to provide.

[0007] It is an object of the present invention to provide a method for controlling insects including pyriteloids having excellent efficacy against insects including mite living indoors.

[0008]

DISCLOSURE OF THE INVENTION The present inventors have studied a number of pyrethroid compounds, particularly compounds known as pyrethroid-based insecticides, and their extermination methods which exert an insecticidal effect, especially acaricidal effect. As a result, the present invention has been completed.

That is, according to the present invention, a part of a liquid absorbing core is immersed in a solution containing a compound represented by the following general formula (1) as an extermination component, and the solution is absorbed in the liquid absorbing core. At the same time, the above-mentioned object has been achieved by a heating and transpiration extinguishing method characterized in that the upper part of the wick is heated to evaporate the absorbed solution. General formula (1)

[0010]

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(Where X ₁ and X ₂ each represent chlorine and / or a methyl group) In the compound represented by the general formula (1), which is an active ingredient used in the present invention, X ₁ and X ₂ are both chlorine. Or a methyl group, or one of them is chlorine, and the other is a methyl group.One of the compounds also has many optical isomers and geometric isomers. Among them, a particularly preferred compound is (+) 1R, 3S-
2,3,5,6-tetrafluorobenzyl trans-2,2-dimethyl-3 (2,2-dichlorovinyl) -cyclopropanecarboxylate (hereinafter referred to as "compound (1)")
It is. In addition, (-) 1R-cis / trans-2,2
-Dimethyl-3 (2,2-dichlorovinyl) -cyclopropanecarboxylate 2,3,5,6-tetrafluorobenzyl or (+-) 1R, S-cis / trans-2,2-
2,3,5,6-Tetrafluorobenzyl dimethyl-3- (2-methyl-1-propenyl) -cyclopropanecarboxylate (hereinafter, referred to as "compound 2") can also be used.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the extermination method of the present invention, one or a combination of two or more of the compounds represented by the above general formula (1) is used as an active ingredient. Although it can be used as it is, it is usually held in a liquid carrier, and then, if necessary, a dispersant, a stabilizer, a volatilization adjuster, etc. are added as appropriate, so that the liquid is absorbed into the liquid absorbent core as an oil or the like and heated. Used to evaporate.

The liquid carrier used in the preparation includes, for example, water; aliphatic hydrocarbons such as hexane, kerosene and kerosene; aromatic hydrocarbons such as benzene, toluene and xylene; dichloroethane, carbon tetrachloride and the like. Halogenated hydrocarbons; ethanol, isopropyl alcohol,
Alcohols such as ethylene glycol; ketones such as acetone, methyl ethyl ketone and cyclohexanone; ethers such as tetrahydrofuran, dimethoxyethane and diethyl ether; esters such as ethyl acetate; nitriles such as acetonitrile; acid amides such as dimethylformamide Is mentioned. As dispersants, for example, soaps, polyoxyethylene alkyl allyl ether,
Polyoxyethylene fatty acid esters, fatty acid glycerides, sorbitan fatty acid esters, sulfates of higher alcohols, surfactants such as alkyl allyl sulfonate, and the like, as a volatilization modifier, for example, tricyclodecane, cyclododecane, 2, 4,6-triisopropyl-1,3,5-trioxane, trimethylene nonbornene and the like.

The liquid preparation used in the extermination method of the present invention includes various conventionally used insecticides, acaricides, synergists, insect repellents for insects and rodents, fungicides, fungicides, fungicides, and the like. Deodorants, fragrances, coloring agents and the like can also be blended. Piperonyl butoxide, for example as a synergist or acaricide,
Octachlorodipropyl ether, N- (2-ethylhexyl) -1-isopropyl-4-methylbicyclo [2,2,2] oct-5-ene-2,3-dicarboximide, isobonyl thiocyanoacetate, N -(2
-Ethynyl) -bicyclo [2,2,1] -hepta-5
Ene-2,3-dicarboximide and the like can be used, and as a pest and rodent repellent, 2,3,4,5
-Bis (△ -butylene) -tetrahydrofurfural,
N, N-diethyl-m-toluamide, di-n-propyl isosine collomate, di-n-butylacetic acid, 2-hydroxyethyloctyl sulfate, 2-t-butyl-4-hydroxyanisole, 3-t-butyl -4-Hydroxyanisole, cycloheximide, β-nitrostyrene cyanoacrylonitrile, tributyltin hydrochloride, trinitrobenzene-aniline complex, naphthalene and the like can be used.

As various insecticides and acaricides, phenothrin (3-phenoxybenzyl d-cis / trans-chrysanthemate) and permethrin (3-phenoxybenzyl d1-cis / trans-3- (2,2- Dichlorovinyl) -2,2-dimethyl-1-cyclopropanecarboxylate), resmethrin ((5-benzyl-
3-furyl) methyl d1-cis / trans-chrysanthemate), allethrin (d1-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d1-cis / trans-chrysanthemate), phthalthrine (( 1,3,3
4,5,6,7-hexahydro-1,3-dioxo-2
-Isoindolyl) methyl d1-cis / trans-chrysanthemate), empentrin (1-ethynyl-2-
Methyl-2-pentenyl d1-cis / trans-chrysanthemate), 1-ethynyl-2-methyl-2-pentenyl-2,2,3,3-tetramethyl-cyclopropanecarboxylate, 1-ethynyl-2 -Methyl-2-
Pentenyl-2,2-dimethyl-3- (2 ', 2'-dichlorovinyl) -cyclopropanecarboxylate, 1
-Ethynyl-2-methyl-2-pentenyl 2,2-dimethyl-3- (2 ', 2'-dichronivinyl) cyclopropanecarboxylate, d.d-T80-praletrin ((+)-2-methyl-4- Oxo-3- (2-propynyl) -2-cyclopentenyl (+)-cis / trans-chrysanthemate (trade name: ETOK; manufactured by Sumitomo Chemical Co., Ltd.)), tefluthulin (2,3,5,6-tetra Fluoro-4-methylbenzyl-3- (2'-chloro-
3 ', 3', 3'-trifluoro-1-propenyl)-
2,2-dimethylcyclopropanecarboxylate) and the like.

Further, as the acaricides conventionally used, in addition to the compounds described in the above-mentioned prior art, isobonyl thiocyanoacetate, paraoxybenzoate, iodinated formal, phenols, phthalate,
-Bromo-2,3-iodo-2-propenyl-ethyl carbonate, monoterpene ketones, monoterpene aldehydes, monoterpene epoxides, phenyl salicylate and the like are used.

As fungicides and fungicides, 2,
4,4'-trichloro-2'-hydroxydiphenyl ether, 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyrazine, alkylbenzylmethylammonium chloride, benzylmethyl- {2- [2-
(P-1,1,3,3-tetramethylbutylphenoxy) ethoxy] ethyl} ammonium chloride, 4-
Isopropyltropolone, N, N-dimethyl-N'-phenyl-N '-(fluorodichloromethylthio) sulfonamide, 2- (4'-thiazolyl) benzimidazole, N- (fluorodichloromethylthio) -phthalimide, 6-acetoxy- 2,4-dimethyl-m-dioxin, isopropylmethylphenol, O-phenylphenol, p-chloro-m-xylenol and the like are used, as a deodorant, lauric acid methacrylate and the like, and as a fragrance, The essential oil component of rush, citronella, lemon, lemongrass, orange, eucalyptus, lavender and the like are used.

The amount of the active ingredient in the liquid preparation used in the extermination method of the present invention can be appropriately determined according to the dosage form, application method, application place, and the like. In the case of oils, it is preferable to add 0.1 to 30% by weight, and this storage container is also preferably of a type suitable for application.

Thus, the extermination method of the present invention provides a floor,
Tatami, carpets, futons, sofas, pillows, closets, etc. are applied by heat evaporation. In addition, beddings and sofas may be filled with a fiber or urethane filler treated by the extermination method of the present invention.

The mites that can be exterminated by the extermination method of the present invention include a wide range of mites that live and propagate indoors, for example, Dermatophagoides such as Dermatophagoides pteronyssinus and Dermatophagoides pteronyssinus; Examples of the ticks include mites, stag mites, red mites, and red mites, and other parasitic mites such as dust mites, house dust mites, common ticks, ticks, and mites.

In the present invention, the compound represented by the above general formula (1) is used as an extermination component and is heated and evaporated from the absorbent core, thereby exhibiting an excellent extermination effect. Further, the above compounds also have low toxicity common to pyrethroid compounds.

[0022]

EXAMPLES Hereinafter, the present invention will be described specifically with reference to Test Examples and Examples, but the present invention is not limited to these Examples. Test examples Dermatophagoides farinae (De)
rmatophagoides fari-nae (hereinafter “Df”)
Tyrophagus putrescentiae (hereinafter "T.
p. "), the efficacy of the active ingredient comprising the compound represented by the general formula (1) used in the extermination method of the present invention was examined.

A. Reagents Agent of the present invention: (+) 1R, 3S-trans-2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylate 2,3,5,6-tetrafluorobenzyl (general Name benfluthrin) (compound (1)) Comparative drug: phenothrin (3-phenoxybenzyl d-)
Cis / trans-chrysanthemate) 90.0% (a.
i. ) Or more b. Test method The stock solution of the above reagent was diluted with acetone, and black paper (10 ×
5 cm), the concentration of each drug is 0.5 g / m ² , 2.5 g / m ²
After dropping uniformly to m ² , the mixture was left indoors for several minutes. This black paper was folded in two to a size of 5 × 5 cm, and two sides other than the fold were clipped. Only 50 live mites were put in the fold, and the other was clipped on the other side and completely sealed. After 24 hours, the clip was removed.
The lives of the mites were determined under a stereoscopic microscope (Olympus). As a control, the same test was performed using black paper treated with acetone containing no drug.

C. Test Results The mortality was determined by the following formula, and the results are shown in Table 1 as the average of duplicates. Lethal rate (%) = [(number of dead mites) / (total number of mites)] × 1
00

[0025]

[Table 1]

Example 1 1.5% (v / v) of compound (2) and an organic solvent (boiling point 2
(50-310 ° C.) 98.5 (v / v)% to prepare an acaricide composition for a liquid-absorbing wick, filled into a polyvinyl chloride container having a columnar liquid-absorbing wick, and heat evaporated. did. Example 2 Compound (1) 3 (v / v)% and an organic solvent (boiling point 320
(−360 ° C.) 97 (v / v)% was mixed to prepare a mite-killing composition for a liquid-absorbing wick, filled in a polyvinyl chloride container having a columnar liquid-absorbing wick, and heated and evaporated.

[0027]

EFFECTS OF THE INVENTION The heat transpiration and extermination method of the present invention shows an excellent extermination effect on mites living indoors as compared with the conventional pyrethroid-based acaricide, and has high safety to the human body, It is an excellent one that can be easily applied within.

Claims (1)

[Claims] A liquid absorbent core is partially immersed in a solution containing a compound represented by the following general formula (1) as an extermination component, and the liquid absorbent core absorbs the solution. A method for removing heat by evaporation, comprising heating the upper part of a liquid absorbing core to evaporate the absorbed solution. General formula (1) (However, X ₁ and X ₂ represent chlorine and / or methyl groups)