JP2007001985A - Method for interfering with flight behavior of harmful insect - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for interfering with the flight behavior of a harmful insect, which is capable of interfering with the flight behavior of the harmful insect sprayed with an aerosol so as to prevent the aerosol from being uselessly applied and besides is desirable from the viewpoint of environmental hygiene. <P>SOLUTION: The method for interfering with the flight behavior of a harmful insect comprises spraying a harmful insect control aerosol comprising a stock solution containing an insecticide and a solvent and a propellant so as to apply an effective amount of the solvent within one second to the insect to interfere with the flight behavior of the insect sprayed with the aerosol. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  [Technical Field] The present invention relates to a pest flight behavior inhibition method for inhibiting a pest flight behavior after aerosol injection in a pest control aerosol containing a stock solution containing a pesticide and a solvent and a propellant.

  Aerosols have been widely known for controlling pests, and many of them are marketed as they are easy to use. Various studies have been made on means for increasing the control efficacy. For example, an insecticide having a strong insecticidal effect is used as an active ingredient, a composition of a stock solution containing the insecticide is examined, and an injection amount is prepared.

  However, conventionally, the effect of the aerosol on the target pests is not satisfactory to the user, and changes depending on the degree of pesticide resistance generation and the change in living environment. Therefore, development of an aerosol that is superior to conventional ones is desired. For example, insect pests such as cockroaches are highly agile, and resistance to insecticides is likely to occur. Therefore, even if aerosol is sprayed, the insects fly for a while. On the other hand, many users will repeatedly inject aerosol until the flying pest falls. Such repeated spraying not only wastes the aerosol, but also has hygiene problems such as the room air is filled with insecticide, and the room filled with insecticide enters the eyes.

  An object of the present invention is to provide a method for inhibiting the flying behavior of pests after injection in an aerosol that is hygienic and preferable, by reducing unnecessary waste of the aerosol.

As a result of intensive studies, the present inventor has found that the above object can be achieved by an aerosol having the following specific constitution, and has reached the present invention.
(1) A pest control aerosol containing a pesticide and a stock solution containing a solvent and a propellant, and spraying an effective amount of the solvent within 1 second to inhibit the flying behavior of the pest after injection Flight behavior inhibition method.

  The present invention provides an aerosol having an effect of remarkably hindering the flying movement of a pest from a place where the aerosol pest is sprayed by injecting an effective amount of the solvent contained in the stock solution within 1 second in the aerosol. can do.

  Therefore, in the conventional aerosol, even if the spraying process is performed, the pests fly from the place, and the spraying of the aerosol is continued until the flying pests fall. However, in the present invention, it is possible to inhibit the flying behavior of pests with a short spraying process, so that it is possible to reduce wasteful use of aerosol. Moreover, there is a usefulness that a large amount of insecticide is injected into the space and can be prevented from entering the eyes, and can be used safely in the living environment.

In a pest control aerosol containing an undiluted solution containing a pesticide and a solvent and a propellant, the solvent in the undiluted solution can be quickly sprayed in an effective amount within 1 second to quickly act on the pest and inhibit flight behavior. It is thought that it was made.
The inhibitory effect of the flying behavior of the pests after the aerosol injection, which is an effect of the present invention, is different from the insecticidal effect.

  The aerosol obtained by the method for inhibiting the flying behavior of pests according to the present invention inhibits the flying behavior of the pests after jetting and has a short knockdown time. Moreover, the wasteful waste of spraying until a pest stops flying like a conventional aerosol can be reduced, which is preferable in terms of environmental hygiene.

The aerosol of the present invention mainly comprises a stock solution containing a solvent and an insecticide and a propellant, and a container capable of pressurizing and filling them, and means for spraying a predetermined amount into a desired air space (valve, operation button) Etc.).
The effective amount of the solvent in the stock solution varies depending on the target pest and the type of the solvent, but as a guideline, it may be adjusted to 0.5 to 1.2 ml within 1 second.
The effective amount of the above-mentioned solvent is an amount necessary for obtaining an inhibitory effect on the flying behavior of the pest after injection, and can be achieved by injecting aerosol for 1 second and measuring the amount of solvent injected during that time. .
As means for enabling such injection, buttons and valves having an injection diameter of 0.3 to 5.0 mm (a stem having an inner diameter of 0.3 to 4.0 mm, a vapor tap having an inner diameter of 0 to 2.0 mm) Adjusting the inner diameter of the tube in the aerosol can (1.0 to 8.0 mm), and the type and amount of propellant However, it is sufficient to select a means that enables mass injection.
In addition to the push button type, the button shape may be a trigger type. If mass injection is to be performed, a trigger type is preferable as the operability.

The stock solution in the aerosol of the present invention is a composition containing an insecticide and a solvent and, in addition to these, a surfactant and the like as necessary.
Examples of the insecticide include pyrethroid insecticides, organophosphorus insecticides, carbamate insecticides, and the like.
Examples of pyrethroid insecticides include framethrin, ciphenothrin, phenothrin, permethrin, resmethrin, allethrin, phthalthrin, empentrin, tefluthrin, praretrin, imiprothrin, transfluthrin, and the like.
Examples of organophosphorus insecticides include fenitrothion, chlorpyrifos, marathon, dichlorvos, pyridafenthione, trichlorphone and the like. Examples of carbamate insecticides include carbaryl, benfuracarb, and propoxur.
Examples of the compound (synergist) that enhances the insecticidal efficacy of the pyrethroid insecticide include piperonyl butoxide, octachlorodipropyl ether, N- (2-ethylhexyl) -1-isopropyl-4-methyl. Bicyclo [2,2,2] oct-5-ene-2,3-dicarboximide, isobornyl thiocyanoacetate and N- (2-ethynyl) -bicyclo [2,2,1] -hepta-5 Examples include ene-2,3-dicarboximide.

  Other insecticides used in the present invention include hinoki, cedar and hiba essential oils, menthol, yellowfin extracts, citrus peel and seed extracts, aromatic sulfonamide derivatives, tricyclohexyltin hydroxide, 4 , 4′-Dibromobenzylbenzylate, 2,3-dihydro-2,2-dimethyl-7-benzo [b] furanylni-N-dibutylaminothio-N-methylcarbamate, silane compound, cinnamic acid derivative, acetic acid Cinnamyl, bufurofezin, isoprothiolane, paraoxybenzoic acid ester, iodinated formal, phenols, phthalic acid ester, 3-bromo-2,3-iodo-2-propenyl-ethyl carbonate, monoterpene ketones, monoterpene aldehyde , Monoterpene epoxides, benzyl salicylate, Such as salicylic acid phenyl and the like.

  Examples of insecticides include insect juvenile hormone agents such as metoprene, anti-juvenile hormone agents such as plecosene, insect pest hormone agents such as ecdysone and other molting hormone agents, and antihormonal agents.

  As the addition amount of the insecticide used in the present invention, the amount used in conventional aerosols can be used, but as a guideline, 0.01 to 2.0 wt / v% (weight / volume in the product) %) Is preferred.

And various chemical | medical agents other than the said insecticide can be added. For example, pest repellents, bactericides, antifungal agents, deodorants, fragrances, coloring agents, and the like can be blended.
2,3,4,5-bis (δ-butylene) -tetrahydrofurfural, N, N-diethyl-m-toluamide, di-n-propylisocincolomate, di-n-butylacetic acid, 2 as pest repellent -Hydroxyethyl octyl sulfate, 2-t-butyl-4-hydroxyanisole, 3-t-butyl-4-hydroxyanisole, cycloheximide, β-nitrostyrene cyanoacrylonitrile, tributyltin hydrochloride, trinitrobenzene-aniline complex, As bactericides or antifungal agents such as naphthalene, 2,4,4′-trichloro-2′-hydroxydiphenyl ether, 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyridine, 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) benz Imidazole, N- (fluorodichloromethylthio) -phthalimide, 6-acetoxy-2,4-dimethyl-m-dioxin, isopropylmethylphenol, o-phenylphenol, p-chloro-m-xylenol, etc. are used and deodorant As fragrance, lauric acid methacrylate and the like, and as fragrance, rush essential oil component, cypress essential oil component, citronella, lemon, lemongrass, orange, eucalyptus, lavender and the like can be blended.

Examples of the solvent that can be used in the present invention include aliphatic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, alcohols, ethers, esters, and surfactants.
Examples of these solvents include aliphatic hydrocarbons such as hexane, kerosene (kerosene), n-pentane, isopentane, and cyclopentane: aromatic hydrocarbons such as benzene, toluene, and xylene: dichloromethane, carbon tetrachloride, and the like. Halogenated hydrocarbons: Alcohols such as ethanol, isopropyl alcohol, ethylene glycol, and butyl diglycol: Ethers such as acetone, methyl ethyl ketone, and diethyl ether: Esters such as ethyl acetate and isopropyl myristate. In addition, nitriles such as acetonitrile, amides such as dimethylformamide, vegetable oils such as soybean oil and cottonseed oil, and water can be used. Furthermore, these mixed solvents may be used. Furthermore, for example, sorbitan fatty acid esters such as sorbitan monooleate and sorbitan monolaurate, polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monooleate, polyoxyethylene alkyl ethers such as polyoxyethylene nonylphenyl ether, decaglycerin mono Surfactants such as polyglycerin fatty acid esters such as oleate and polyoxyethylene hydrogenated castor oil can also be used. The surfactant is mainly used together with a solvent and can be used for emulsifying, dispersing or solubilizing the insecticide. The amount added is influenced by the affinity between the solvent and the insecticide, but for example, about 0.5 to 10 wt / v% in the stock solution may be added. In the present invention, the solvent content may be any amount as long as the solvent injection amount falls within the above range, but as a guide, it is preferably 10 to 90 v / v% in the aerosol.

Examples of the propellant in the present invention include liquefied petroleum gas (LPG), propane, isobutane, n-butane, isopentane, n-pentane, cyclopentane, dimethyl ether (DME), nitrogen gas, liquefied carbon dioxide gas, compressed air, and chlorine. Chlorofluorocarbon gas containing no hydrogen (gases called alternative chlorofluorocarbons, such as HFC-125, HFC-134a, HFC-143a, HFC-152a, HFC-32, etc.), and mixtures thereof.
In the present invention, the blending amount of the propellant in the aerosol is not particularly limited as long as the solvent spray amount can be satisfied, but 10 to 90% by volume is preferable as a guide.

  The control target in the present invention is generally for pests that can perform flying behavior (including glide behavior), and examples of pests that live indoors and outdoors include sanitary pests and living pests. For example, sanitary pests include cockroaches (such as cockroaches, black cockroaches, American cockroaches), flies (such as house flies, black flies, and flyflies), mosquitoes (such as house flies, crested mosquitoes, etc.), fleas, etc. Examples include termites (feather ants), bees, scallops, chironomids, butterflies, stink bugs, moths, and carp.

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.
Example 1
Test of flight behavior after pest injection (1) Preparation of test sample [sample of the present invention]
As an aerosol (total amount: 300 ml), 67.5 ml of a stock solution (solvent: No. 1 kerosene containing 30 g of isopropyl myristate) containing 1.0 g of insecticide (Imiproton: manufactured by Sumitomo Chemical Co., Ltd.) and propellant (LPG + DME) 232. 5 ml was filled into an aerosol container.
Here, the injection amount of the solvent is 0.73 ml / 1 second.

[Comparative Sample 1]
As aerosol (total amount: 300 ml), 135.0 ml of stock solution (solvent: No. 1 kerosene containing 60 g of isopropyl myristate) containing 2.0 g of insecticide (Imiprothrin: manufactured by Sumitomo Chemical Co., Ltd.) and propellant (LPG + DME) 165. 0 ml was filled into an aerosol container.
Here, the injection amount of the solvent is 0.43 ml / 1 second.

[Comparative Sample 2]
As aerosol (total amount 300 ml), 150.0 ml of stock solution (solvent: 1 kerosene) containing 2.0 g of insecticide (d-T80-phthalthrin 1.0 g, permethrin 1.0 g) and 150.0 ml of propellant (LPG + DME) Was filled into an aerosol container.
Here, the injection amount of the solvent is 0.30 ml / 1 second.

[Sample 3 of Comparative Example]
As aerosol (total amount 300 ml), 50.0 ml of stock solution (No. 1 kerosene as solvent) containing 0.666 g of insecticide (d-T80-phthalthrin 0.333 g, permethrin 0.333 g) and 250.0 ml of propellant (LPG + DME) Was filled into an aerosol container.
Here, the injection amount of the solvent is 0.30 ml / 1 second.

(2) Test insect Adult cockroach ( Periplaneta americana ) 3 to 5 days after emergence was used for the test.

(3) Test method As shown in FIG. 1, two polyethylene rings 1 having an outer diameter of 4 mm and an inner diameter of 3 mm are prepared, and one ring 1 is fixed horizontally on the back of the chest of the test insect 2.
Similarly, a hook with a thread is hooked on the ring 1 fixed vertically to the test insect 2 and placed on the slope of the table 3 installed obliquely.
Each sample is sprayed for 1 second using the spraying device 4 from 0.5 m away from the test insect 2. At the same time as the injection of the sample, the stage 3 is removed and the test insect 2 is suspended with the thread 5, and the wind is sent by the fan 6 through the screen 7 from the front of the test insect 2, and the screen 7 is removed immediately after the injection. Encourage flying behavior.
Then, the number of test insects 2 that flew was measured. In addition, the flight time of the flying test insect 2 was measured with a video tape in which the test was taken.
After observing the flight behavior, the test insect 2 was placed on a plate and the time from the injection of the sample to the knockdown was measured.

The measurement results of the knockdown time (seconds), flight time (seconds) and flight rate (%) of each test insect are shown in Table 1. The term “no treatment” refers to the result of the flight time (seconds) performed without spraying.

(4) Test results In Table 1, Sample 1 which is the aerosol of the present invention had a flight rate of 0%, a short time to knockdown, and was superior to Comparative Samples 2-4.
Moreover, although the comparative sample 2 has the amount of insecticides twice that of the present invention, the result is that the flight rate is poor, and thus the usefulness of the present invention can be understood.

It is the schematic of ring fixation to a test insect. It is the schematic of a test.

Explanation of symbols

1 ring 2 test insects 3 units 4 jetting device 5 thread 6 fan 7 screen

Claims (2)

  Insect pest control aerosol containing a pesticide and solvent stock solution and propellant, spraying an effective amount of the solvent within 1 second to inhibit the pest flight behavior after spraying Inhibition method.   2. The method for inhibiting pest flight behavior according to claim 1, wherein an effective amount of the solvent is 0.5 to 1.2 ml.

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