TWI571201B - Method of controlling harmful arthropod, composition, and electrostatic spray device - Google Patents

Description

Method, composition and electrostatic spray device for preventing harmful arthropods

The present invention relates to (i) a method of preventing harmful arthropods (such as flying insects), (ii) a composition, and (iii) an electrostatic spray device.

It is known that the ester compounds represented by the following formulas (1) and (2) are effective for controlling pests, and they have been disclosed in Patent Documents 1 and 2. In the present invention, pests intended to be prevented, more particularly arthropods (including insects) are referred to as cockroach harmful arthropods in some cases. Furthermore, in the present specification, the wording "controlling harmful arthropods" means altering the behavior of harmful arthropods by repelling, attracting, knocking down or killing harmful arthropods. In addition, the word "effective" means that the active ingredient is supplied in an amount that alters the behavior of the harmful arthropod.

In order to prevent harmful arthropods, they will usually have harmful arthropods. The active ingredient of the effect is diffused by a heating method (such as a smoking method), a pressurizing method (such as a gas pressurizing method and a mechanical pressurizing method), etc., so as to cause the harmful arthropod and the active ingredient to directly or indirectly and continuously or intermittently with each other. contact.

Further, electrostatic spraying techniques are known in the art (see, for example, Patent Document 3 and Non-Patent Document 1). According to the electrostatic spray technique, a liquid Taylor cone is formed and the liquid liquid particles are then sprayed from the end of the Taylor cone.

Reference list [Patent Literature]

[Patent Document 1]

Japanese Patent Application Publication No. 2001-11022 A to Tokukai (Publication Date: January 26, 2001)

[Patent Document 2]

Japanese Patent Application Publication No. 57-123146 A (1982) to Tokukaisho (Publication Date: July 31, 1982)

[Patent Document 3]

European Patent Application Publication No. 1399265

[Non-patent literature]

[Non-Patent Document 1]

Proceedings of the Royal Society-1964, p383-397

There is a need for a method for preventing harmful arthropods by effectively spraying an ester compound represented by the formula (1) or an ester compound represented by the formula (2), and (ii) a composition which can be effectively sprayed .

The present invention has been made in view of such problems. It is an object of the present invention to provide a method for preventing harmful arthropods which can effectively carry out a control method without performing any heating method for spraying a composition (for example, a smoking method) or not for spraying Any method of pressurization of the composition (for example, a gas pressurization method or a mechanical pressurization method). Furthermore, another object of the present invention is to provide a composition which can be used to prevent various harmful arthropods. Further, still another object of the present invention is to provide an electrostatic spray device which can (i) easily spray the composition of the present invention without performing any heating method for the spray composition or not for the spray composition. Any method of pressurization, and (ii) an effective method of preventing harmful arthropods.

In order to achieve the object, the method of the present invention for preventing harmful arthropods comprises the steps of electrostatically spraying a composition to an area in which harmful arthropods or harmful arthropods are inhabited in an amount effective to prevent harmful arthropods, the composition Containing at least one of the ester compounds represented by the following formulas (1) and (2):

Furthermore, the composition of the present invention comprises at least one of the ester compounds represented by the following formulas (1) and (2), respectively, which has (i) not less than 1 × 10 ³ at a temperature of 20 ° C Ω m, but not more than 1 × 10 ⁶ Ω m resistivity, (ii) not less than 1 mPa at 20 ° C. s, but no more than 10 mPa. The viscosity of s, and (iii) a surface tension of not less than 20 mN/m at a temperature of 20 ° C but not exceeding 40 mN/m:

According to the control method of the present invention, the control method can be effectively carried out without performing any heating method for spraying the composition, without performing any pressing method for spraying the composition (for example, a gas pressurizing method or a machine) Pressurization method), or any atomization method for spraying the composition. Further, according to the composition of the present invention, various harmful arthropods can be prevented. Further, according to the electrostatic spray device of the present invention, (i) the composition of the present invention can be easily sprayed without any heating method for spraying the composition, and any pressurizing method for the spray composition is not performed (for example, , gas pressurization method or mechanical pressurization method), or any atomization method for spraying the composition, and (ii) a method for effectively preventing harmful arthropods.

Description of specific examples

A specific example of the present invention will be described below.

The composition of the specific example of the present invention is suitably used in the method of the specific example of the present invention for preventing harmful arthropods as described below. The composition of the specific example of the present invention contains (i) at least one of the ester compounds represented by the formulas (1) and (2), respectively, and (ii) a dispersion medium. The substance usable as the dispersion medium may contain a dispersion medium (hereinafter referred to as "physical property adjustment component") having a function of adjusting the physical properties of the composition such as electrical resistivity, viscosity, and surface tension.

(ester compound)

The composition of the specific example of the present invention contains at least one of the ester compounds represented by the formulas (1) and (2), respectively. Each ester compound is a compound having an excellent harmful arthropod control effect.

The ester compound represented by the formula (1) is 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4-( Methoxymethyl)phenyl]methyl ester. The ester compound can be produced by a method described in, for example, Japanese Patent Application Laid-Open Publication No. 2001-11022 A.

With respect to the ester compound represented by the formula (1), there are two isomers, that is, (i) an isomer derived from two asymmetric carbon atoms present on the cyclopropane ring (R-isomer, S - an isomer), and (ii) an isomer derived from a stereostructure defined by a cyclopropane ring (cis-isomer, trans-isomer). The ester compound of the present invention may contain an active isomer in an arbitrary ratio. The content ratio of these active isomers in the ester compound of the present invention is determined in accordance with, for example, the stereoselectivity of the reaction for preparing the ester compound represented by the formula (1). Further, (i) the active isomers may be mixed with each other at an arbitrary ratio, and (ii) the ester compound of the present invention contains the thus obtained mixture.

Examples of the ester compound represented by the formula (1) include (1R)-2,2-di Methyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4-(methoxymethyl)phenyl]methyl ester, (1R) -trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4-(methoxymethyl) Phenyl]methyl ester and (1R)-cis-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [2,3,5,6-tetrafluoro- 4-(Methoxymethyl)phenyl]methyl ester. Among these, the ester compound represented by the formula (1) is preferably a (1R)-trans isomer.

The ester compound represented by the formula (2) is 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4-(A) Oxymethyl)phenyl]methyl ester. The ester compound represented by the formula (2) can be produced by a method described in, for example, Japanese Patent Application Laid-Open Publication No. 57-123146 A (1982).

With regard to the ester compound represented by the formula (2), there are two isomers, that is, (i) an isomer derived from two asymmetric carbon atoms present on the cyclopropane ring (R-isomer, S - an isomer), and (ii) an isomer derived from a stereostructure defined by a cyclopropane ring (cis-isomer, trans-isomer). The ester compound of the present invention may contain an active isomer in an arbitrary ratio. The content ratio of such active isomers in the ester compound of the present invention is determined in accordance with, for example, the stereoselectivity of the reaction for preparing the ester compound represented by the formula (2). Furthermore, it can also make (i) such activity The structures are mixed with each other at an arbitrary ratio, and (ii) the ester compound of the present invention contains the mixture thus obtained.

Examples of the ester compound represented by the formula (2) include (1R)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid [2,3,5,6-tetra Fluoro-4-(methoxymethyl)phenyl]methyl ester, (1R)-trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid [2 ,3,5,6-tetrafluoro-4-(methoxymethyl)phenyl]methyl ester and (1R)-cis-3-(2,2-dichlorovinyl)-2,2-di Methylcyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4-(methoxymethyl)phenyl]methyl ester. Among these, the ester compound represented by the formula (2) is preferably a (1R)-trans isomer.

It should be noted that in the ester compound represented by each of the formulae (1) and (2), the carbon atom bonded to the carboxyl group is bonded to the 1-position in the cyclopropane ring, and is bonded to the substituent having a carbon-carbon double bond. The carbon atom is in the 3 position in the cyclopropane ring.

The amount of the ester compound in the composition is in the range of from about 0.1% by mass to about 10% by mass, preferably in the range of from 0.2% by mass to 8% by mass, more preferably from 1.0% by mass to 6% by mass.

(dispersion medium)

The composition of the specific example of the present invention contains a dispersion medium which causes dissolution or dispersion of at least one of the ester compounds represented by the formulas (1) and (2), respectively. The dispersion medium is a solvent such as an organic solvent or a solvent mixture such as an organic solvent mixture. The solvent can be a polar solvent or a non-polar solvent. Generally, polar solvents are suitable as solvents.

In the specific example of the present invention, in order to effectively spray the composition, an electrostatic spray device is used, (i) causing the composition to be in the form of stable droplets (described later), and (ii) spraying the droplets. According to this, the desired composition has the following properties: (i) at least one of the compounds represented by the formulas (1) and (2) is uniformly dispersed or dissolved in the composition, and (ii) the composition has Appropriate resistivity, proper viscosity and proper surface tension, and (iii) dispersion medium have low toxicity.

Suitable examples of the dispersion medium of the composition include (i) a dispersion medium (such as ethanol, propylene glycol, triethylene glycol, glycerin, polyethylene glycol, and polypropylene glycol) containing a polyol having at least one hydroxyl group per molecule, and (ii) A dispersion medium (such as a glycol ether (e.g., glycol methyl ether)) containing a polyol ether having at least one hydroxyl group per molecule. Dipropylene glycol methyl ether is particularly suitable as the polyol ether. In addition to dipropylene glycol methyl ether, particularly suitable examples of polyol ethers include propylene glycol methyl ether and tripropylene glycol methyl ether.

In addition to the above-mentioned dispersion medium, it may also be 1-methoxy-2-propanol acetate, 1-butoxy-2-propanol, 1-propoxy-2-ethyloxypropane Or oxybis(methoxy)propane.

The amount of the dispersion medium in the composition is preferably not less than 65% by mass, but not more than 99% by mass, more preferably not less than 70% by mass, but not more than 95% by mass.

There is an example in which the dispersion medium used in the composition of the specific example of the present invention is used as a physical property adjusting component. The physical properties of the composition of the specific example of the present invention can be adjusted by appropriately adjusting the composition using this physical property. In this example, components can be adjusted using a single physical property or combined with each other. A plurality of physical property adjustment components.

Examples of the physical property adjusting component include an ester solvent, a petroleum solvent (such as a paraffinic solvent, an aromatic solvent, and a naphthenic solvent) (for example, Isopar L (registered trademark)), a naphthenic oil (such as decamethyltetraoxane). Alkane, decamethylcyclopentaoxane, dodecamethylcyclohexaoxane and mixtures thereof, polyethylene glycol, water and electrolyte diluted aqueous solutions (such as sodium bicarbonate, sodium acetate, sodium chloride) , diluted aqueous solution of ascorbic acid, citric acid or acetic acid).

For example, in some instances, the surface tension of the composition can be reduced by the addition of an isoalkane such as Isopar L to the composition. It should be noted that the composition may contain, for example, an amount of isoalkane in the range of 0% by mass to 9.99% by mass.

Further, in some examples, the composition of the composition can be adjusted by adding polyethylene glycol (〝PEG〞) having an average molecular weight of more than 200 Da (for example, not less than 200 Da, but not more than 700 Da). The viscosity of the object.

Further, the resistivity of the composition can be adjusted by adding an electrolyte to the composition. Suitable electrolytes for this purpose are known in the art. For example, the electrolyte may be a dilute aqueous solution of an alkanoate such as a dilute solution of sodium acetate (for example, a 0.4% by mass sodium acetate solution).

Further, the dispersion medium which can be used to adjust the resistivity of the composition may be a surfactant (such as a nonionic surfactant, an amphoteric surfactant, an anionic surfactant, and a cationic surfactant).

a nonionic surfactant that can be included in the composition of the present invention Examples include sorbitan fatty acid esters (such as sorbitan stearate and sorbitan oleate), glycerin fatty acid esters (such as glyceryl stearate, glyceryl isostearate, oleic acid) Glycerides, polystearic acid glycerides, polyisostearic acid glycerides and polyoleic acid glycerides), polyoxyethylene alkyl ethers (such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene hard Fatty ether, polyoxyethylene oleyl ether and polyoxyethylene styryl phenyl ether), polyoxyethylene sorbitan fatty acid ester (such as polyoxyethylene sorbitan coconut oil fatty acid, polyoxyethylene sorbitan oil Acid esters and polyoxyethylene sorbitan stearate) and polyoxyethylene sorbitan fatty acid esters (such as polyoxyethylene sorbitol tetraoleate). In addition to the above nonionic surfactants, it may be polyoxyethylene hydrogenated castor oil, alkylphenol polyglycol ether or the like.

Examples of the amphoteric surfactant which may be contained in the composition of the specific examples of the present invention include betaine (such as lauryl betaine and stearyl betaine) and imidazoline derivatives (such as N-lauryl-p-Asia). Aminodipropionic acid disodium). In addition to the above amphoteric surfactants, it may be lecithin or the like.

Examples of the anionic surfactant which may be contained in the composition of the specific examples of the present invention include alkyl sulfates (such as sodium lauryl sulfate and triethanolamine lauryl sulfate), polyoxyethylene alkyl ether sulfates (such as poly Oxyethylene ethylene lauryl ether sulfate and triethanolamine polyoxyethylene lauryl ether sulfate), alkylbenzenesulfonates (such as sodium dodecylbenzenesulfonate) and polyoxyethylene alkyl ether phosphates (such as dimerized ethylene oxide) Sodium lauryl ether phosphate and sodium dimethoxide oil ether sodium phosphate).

Cationic interfacial activity which may be contained in the composition of the specific example of the present invention Examples of the agent include an alkylammonium salt such as cetyltrimethylammonium chloride and distearyldimethylammonium chloride.

Further, a salt of a quaternary amine other than the above, a preservative, and a salt of chlorhexidine (such as chlorhexidine digluconate) and/or other air purifiers (including the instructions in the present invention) may be used. As disclosed in the above, a dispersion medium for adjusting the electrical resistivity of the composition of the specific example of the present invention is added to the composition of the specific example of the present invention.

In order to measure the physical properties of the above composition, the following methods and apparatus were used.

First, the resistivity of the composition can be measured using a resistance meter (pH/ION/COND METER F-55 manufactured by HORIBA, Ltd.) having a liquid resistance battery. The unit of the value obtained by the measurement is 〝M Ω.m〞.

Further, the surface tension of the composition can be measured using a contact angle/surface tension meter (DM-501 manufactured by Kyowa Interface Science Co., LTD.), and the measurement principle is based on a pendant-drop method. . The unit of the value obtained by the measurement is 〝mN/m〞.

Further, the viscosity of the composition can be measured using a rotary viscometer (RB85L manufactured by TOKI SANGYO CO., LTD.). The unit of the value obtained by the measurement is 〝mPa.s〞. A method according to 〝JIS Z8803 Viscosity of liquid-Methods of measurement〞 can be used as the measuring method.

The droplet diameter of the composition obtained after the composition is sprayed may be a particle size distribution measuring device (Aero Particle Sizer Model 3321 manufactured by TSI Instruments Inc. or manufactured by TSI Instruments Inc.). The Scanning Mobility Particle Sizer Model 3936 was measured with a mean particle diameter 〞. The unit of value obtained by measurement is 〝 nanometer or 〝micron 〞. It should be noted that the average particle diameter of not less than 100 nm, but not more than 500 nm (ie, 0.5 μm) is the value obtained using the Model 3936, and the average particle diameter of more than 0.5 μm, but not exceeding 10 μm, is 3321. The value obtained by the type.

The resistivity of the composition can be appropriately adjusted so that the specific resistance is not less than 1 × 10 ³ Ω m at a temperature of 20 ° C, but not more than 1 × 10 ⁶ Ω m. Furthermore, the viscosity of the composition can be appropriately adjusted so that the viscosity is not less than 1 mPa at a temperature of 20 ° C. s, but no more than 10 mPa. s. Further, the surface tension of the composition can be appropriately adjusted so that the surface tension is not less than 20 mN/m at a temperature of 20 ° C, but not more than 40 mN/m. The composition can be successfully sprayed using an electrostatic spray device (described later) by setting a composition having the properties of the above range.

In addition to the above components, the composition used in the present invention may additionally contain a perfume or an air detergent as an additional component.

The perfume can be, for example, an essential oil or another aromatic oil. Only a part of all the fractions (oil components) contained in this oil can be used as a fragrance.

Preferred examples of the perfume more specifically include layered tree oil, tea tree oil (such as terpinen-4-ol), catmint oil (such as refined oil of Nepeta Cateria and cat grass), catnip An oil fraction (such as a fraction containing nepetalactone), a thyme oil (such as an oil of Thymus Vulgaris), and a fraction of thyme oil (such as a fraction containing thymol).

Further, perfumes such as aromatic oils are typically, for example, (i) a mixture of different kinds of compounds having a different chain length from each other, or (ii) a mixture containing different kinds of stereoisomeric forms. The composition may contain this aromatic oil.

Among the above examples, the fragrance preferably comprises at least one oil component selected from the group consisting of tea tree oil, catnip oil and thyme oil.

In the example in which the composition of the present invention contains an aromatic oil, the amount of the aromatic oil in the composition is preferably in the range of from 5% by mass to 35% by mass based on the total amount of the composition.

Further, it is preferred that the aromatic oil has a vapor pressure of not more than 270 Pa at a temperature of 20 °C.

Specific examples of air detergents include, for example, an active air cleansing component, an active antibacterial component, an active antifungal component, and an active antiallergic component.

The active air cleansing component is a substance having bromine-removing activity.

The active antibacterial component is a substance having an activity of inhibiting bacterial growth.

The active antifungal component of the earthworm is a substance having activity for inhibiting fungal growth.

〝 Active anti-allergic component 〞 is a substance that inhibits the allergic activity of allergens.

The following may be used as the air purifier: (i) to develop a single function among the above functions (i.e., active air cleansing component, active antibacterial component, active antifungal component, and active antiallergic component) One of the substances, or (ii) one of the functions expected to develop the above functions Substance. Specifically, preferred examples of the substance which is expected to develop this plurality of functions as an air cleaner include polyhexamethylene biguanide polymer, polyhexamethylguanidinium polymer, alkyldimethylbenzylammonium chloride, Octyl decyl dimethyl ammonium chloride, chlorohexidine, chlorohexidine digluconate, benzalkonium chloride, sodium hypochlorite, 2-phenylphenol, polyethylene glycol 300, 2- Benzyl-4-chlorophenol, 2-phenoxyethanol, glutaraldehyde, furfural, chloroxylenol, trichlorophenol, phenol, silver salt (especially water-soluble silver salt), hexachlorophene (hexachlorophene), peracetic acid, lactic acid, performic acid, potassium permanganate and potassium peroxymonosulfate.

In the example in which the composition of the present invention contains an air cleaner, the amount of the air cleaner in the composition is preferably not less than 0.05% by mass, but not more than 20% by mass, based on the total amount of the composition, more preferably Not less than 0.1% by mass, but not more than 17% by mass, more preferably not less than 0.1% by mass, but not more than 15% by mass.

Examples of active antibacterial components include triclosan, trichlorocarbylamine benzene, isopropylmethylphenol, N-(dichlorofluoromethyl)-decylamine, N'-(dichlorofluoride) Methylthio)N,N'-dimethyl-N'-phenyl-sulfonamide, polyoctyl polyamine ethylglycine, thiabendazole, chlorine dioxide, 2-bromo-2 -nitroethanol, 2-bromo-2-nitropropane-1,3-diol, 2-bromo-2-nitropropanol, 1-bromo-1-nitropropanol, 1,4-dibromo -1,4-dinitrobutanediol-2,3-cetylpyridinium, 1-bromo-1-nitro-2-methylpropan-2-mercaptopyridinium, cetyl chloride Pyridinium chloride, benzethonium chloride, acrino, povidone-iodine, mercurochrome, chlorine Pyromycin, fradiomycin sulfate, gentamycin sulfate, hydroxytetracycline hydrochloride, polymyxin B sulfate, trichomycin, and griseofulvin ( Griseofulvin).

Examples of the active antifungal component include benzoic acid, a salt of benzoic acid, a salt of sorbic acid, sorbic acid, a p-oxybenzoic acid ester, sodium dehydroacetate, propionic acid, polylysine, bismuth, and hydrazine. alcohol (such as linalool, geraniol, nerol, citronellol, alpha] terpineol, terpinen-4-ol and isopropyl alcohol foreign mint), C ₇ to C ₁₅ alicyclic alcohols (such as 2 , 4-dimethyl-3-cyclohexene-1-methanol, 4-isopropylcyclohexanol, 4-isopropylcyclohexane methanol, 1-(4-isopropylcyclohexyl)-ethanol and 2,2-Dimethyl-3-(3-methylphenyl)-propanol), and a C ₇ to C ₁₅ arylalkyl alcohol (or a C ₇ to C ₁₅ alkyl aryl alcohol) such as benzene Methanol, phenylethyl alcohol, phenylpropanol, geraniol and eugenol).

Examples of active anti-allergic components include hydroxyapatite, epicatechin, epigallocatechin, epicatechin gallate, epigallocatechin An ester compound of epigallocatechin gallate, gallic acid and gallic acid with a C ₁ to C ₄ alcohol.

Examples of the active air-cleaning component or the like for deodorization include tannic acid, polyphenols (such as flavonoids (for example, ketone, flavanone, flavanol, flavonoid, flavonol or isoflavone)), cyclodextrin Refined, lauryl methacrylate, geranyl chlorinate, 4-hydroxy-6-methyl-3-(4-methylpentamyl)-2-piperidine, formalin, glyoxal , sodium hydrogen sulfite, sodium sulfite, dihydroxyacetone, 3,5,5-trimethylhexanol, β-ethoxypropanal, Glutaraldehyde, methacrylate, maleate, maleic acid monoamine, maleic acid maleimide, fumarate, β-mercaptoacrylic acid, β-醯Acrylic acid salt, senecioic acid citronellyl, 1-3-pentadiene-1-carboxylate alkyl ester, pinane hydroperoxide, perylene isopropoxide (p-cymeneperoxide), 1,2-propylene oxide, 1,2-butylene oxide, epoxidized propyl ether, saccharose octaacetate, Fe(III)-octacarboxyindigo (Fe( III)-octacarboxyphthalocyanine), Fe(III)-tetracarboxyindane, 5-methyl-2-isopropyl-2-hexenol, p-butoxyphenol, catechol, hydroquinone, 4-methyl Catechol, 1,2,4-trihydroxybenzene, 3-methylcatechol, 3-methoxycatechol, carnosol, rosmanol, hematoxylin Brazilin), hematoxylin, shikonin, myricetin, baicalein, baicalin, citral, vanillin and coumarin.

The composition of the specific example of the present invention may be, for example, the following composition.

Further, in the example in which the composition of the specific example of the present invention contains the above additional component, the composition of the specific example of the present invention contains the component of the content ratio shown below.

First, in the example in which the composition of the present invention contains the fragrance oil as the fragrance component, the composition contains the components in the content ratio shown in Table 2 below.

Further, in the example in which the composition of the specific example of the present invention contains a compound for disinfection as an additional component, the composition of the specific example of the present invention contains the component of the content ratio shown in Table 3 below.

(harmful arthropods)

Examples of targets to be prevented using the composition of the specific examples of the present invention include arthropods such as insects and mites, particularly harmful arthropods such as harmful insects and harmful mites. Specific examples of the object of the composition control using the specific examples of the present invention are explained below.

Lepidoptera: Pyralidae (such as Chilo suppressalis, Cnaphalocrocis medinalis, Plodia interpunctella, and Ephestia kuehniella; Fall Armyworm (such as Spodoptera litura, Pseudaletia separata, and Mamestra brassicae; Pieridae (such as Pieris rapae); Tortricidae (such as small Adoxophyes orana); Carposinidae; Lyonetiidae; Lymantriidae; Autographa sp.; Agrotis spp. Such as Agrotis segetum and Agrotis ipsilon; Helicoverpa spp.; Heliothis spp.; Plutella xylostella; Parrota (Parnara) Guttata); Tinea translucens; Tineola bisselliella; and so on.

Diptera: Culex (such as Culex pipiens pallens and Culex tritaeniorhynchus); Aedes (such as Aedes aegypti) And Aedes albopictus; Anopheles (such as Anopheles sinensis); Chironomidae; Muscidae (such as Musca domestica) Muscina stabulans and Fannia canicularis; (Calliphoridae); Sarcophagidae; Anthomyiidae (such as Delia platura, Delia antiqua); Tephritidae; Agromyzidae; Drosophilidae; Psychodidae; Phoridae; Tabanidae; Simuliidae; Stomoxyini; Ceratopogonidae;

Dictyoptera: Blattella germanica, Periplaneta fuliginosa, Periplaneta americana, Periplaneta brunnea, Blata orientalis, etc. .

Hymenoptera: Formicidae (such as Camponotus japonicus, Tetramorium tsushimae, Lasius japonicus, Pachycondyla chinensis, Huaju single) Domestic ants (Monomorium intrudens), Lasius fuji, Monomorium pharaosis, Formica fusca japonica, Ochetellus glaber, Pristomyrmex pungens, and broad-nosed ants Pheidole noda) and Argentine ants (Linepithema humile); Polistinae (such as Polistes chinensis antennalis, Polistes riparius, Polistes jadwigae, Polistes rothneyi, Polistes nipponensis, Polistes snelleni and Japanese long feet Bee (Polistes japonicus); Vespodea (such as Vespa mandarinia japonica), Vespa simillima, Vespa analis insularis, Vespa crabro, Black-tailed tiger Vespa ducalis, Vespula flaviceps, Vespula shidai and Dolichovespula media; Bethylidae; Tenthredinidae (such as Japan) Athalia japonica); and so on.

Siphonaptera: Ctenocephalides canis, Ctenocephalides felis, Pulex irritans, and so on.

Anoplura (phthiraptera): Pediculus humanus, Phthirus pubis, Pediculus humanus humanus, Pediculus humanus corporis, and the like.

Psocoptera: Psocidae.

Isoptera: Subterranean terminate (such as Reticulitermes speratus, Coptotermes formosanus, Reticulitermes flavipes, Reticulitermes hesperus, Reticulitermes virginicus, Reticulitermes tibialis and Heterotermes aureus; Drywood terminate (such as Incisitermes minor); Wet wood termites ( Damp-wood terminate) (such as the zoormaster termite (Zootermopsis nevadensis); and so on.

Hemiptera: Delphacidae (such as Laodelphax striatellus, Nilaparvata lugens, and Sogatella furcifera); Cicadellidae (such as the black-tailed spider mites) (Nephotettix cincticeps) and Nephotettix virescens; Aphididae; Pentatomidae (such as Nezara antennata, Riptortus clavetus, thorn Eysarcoris lewisi, Eysarcoris parvus, Plautia stali, Halyomorpha mista, Stenotus rubrovittatus and red whiskers Trigonotylus caelestialium; Aleyrodidae; Coccidea; Cimicidae (such as Cimex lectularius); Tingidae; Psyllidae; and so on.

Coleoptera: corn rootworm (such as Attagenus japonicus, Anthrenus verbasci, Diabrotica virgifera virgifera, and Diabrotica) Undecimpunctata howardi)); Scarabaeidae (such as Anomala cuprea and Anomala rufocuprea); Curculionidae (such as corn elephant (Sitophilus) Zeamais), Lisorhoptrus oryzophilus, Anthonomus grandis and Callosobruchuys chienensis; Tenebrionidae (such as Tenebrio molitor and Red Valley thieves) Tribolium castaneum)); Chrysomelidae (such as Oulema oryzae, Phyllotreta striolata and Aulacophora femoralis); Anobiidae; Ladybug (Epilachna spp.) (such as Epilachna vigintioctopunctata); Lyctidae; Bostrychidae; Ptinidae; Cerambycidae; ant type Wadeer (Paederus fuscipes); and so on.

Thysanoptera: Thrips palmi, Frankliniella occidentalis, Thrips nigropilosus, and so on.

Orthoptera: Gryllotalpidae, Acrididae, Gryllidae, etc.

螨: Pyroglyphidae (such as Dermatophagoides farinae and Dermatophagoides ptrenyssnus); Acaridae (such as Tyrophagus putrescentiae and elliptic toadstool) Aleuroglyphus ovatus)); Glycyphagidae (such as Glycyphagus privates, Glycyphagus domesticus, and Glycyphagus) Destructor)); Cheyletidae (such as Cheyletus malaccensis, Cheyletus malaccesis, and Cheyletus moorei); Tarsonemidae; Chortoglyphidae); Haplochthoniidae; Tetranychidae (such as Tetranychus urticae, Tetranychus kanzawai, Panonychus citri, and European leafhopper) (Panonychus ulmi)); Erythraeidae; Ixodidae (such as Haemaphysalis longicornis); Dermanyssidae (such as Ornithonyssus sylvairum and chicken skin) Hedgehog (Dermanyssus gallinae); and so on.

Scutigeridae; Centipedes (such as Scolopendra subspinipes); Diplopoda (such as Oxidus gracilis and Nedyopus tambanus; squirrel gynecology) (Armadilldiiidae) (such as Armadillidium vulgare); Porcelliionidae: Gastropoda (such as Lehmannia valentiana and Limax flavus); Arachnida (Arachnida) (such as Nephila clavata, Chiracanthium japonicum and Latrodectus hasseltii); and so on.

(Prevention method)

The method for controlling harmful arthropods using the above composition is such that the composition is electrostatically sprayed to a harmful arthropod target or a region in which harmful arthropods are to be inhabited. The electrostatic spray was carried out using an electrostatic spray device.

In an electrostatic spray device, the liquid system flows inside a spray electrode having a tubular shape. A voltage across the spray electrode and a reference electrode (discharge electrode) provided near the spray electrode is applied. This produces an electrostatic force with respect to the liquid flowing inside the spray electrode. It should be noted that the position of the spray electrode and the reference electrode is not particularly limited. For example, a spray electrode and a reference electrode that face each other can also be provided. The liquid inside the spray electrode is electrostatically repulsive by electrostatic force so as to be split into fine particles. When the liquid is sprayed, the liquid is subjected to a cone jet mode, for example at the end of the spray electrode. This spray method is well known in the art, as published in Geoffrey Taylor, Proceedings of the Royal Society, 1964, p383-397. Further, it is preferable that the voltage applied across the spray electrode and the discharge electrode is not less than 1 kV but not more than 30 kV.

A suitable example of an electrostatic spray device is described in European Patent Application Publication No. 1399265. Figure 1 illustrates this example of an electrostatic spray device.

The electrostatic spray device illustrated in Fig. 1 has the following configuration: wherein (i) a spray electrode 1 having a tubular shape is provided inside a recess 2 for the spray electrode 1, which is formed in the main body of the electrostatic spray device On the inner surface (spray discharge surface 5), and (ii) the discharge electrode 3 corresponding to the spray electrode 1 is provided inside the recess 4 for the discharge electrode 3, the concave The portion 4 is formed on the inner surface (spray discharge surface 5) of the main body of the electrostatic spray device. The charged composition is sprayed from the spray electrode 1 such that the composition becomes particles in the form of a mist. A voltage opposite to the charge of the composition (particles in a mist form) is applied to the discharge electrode 3, so that the spray particles in the form of a mist are attracted to the discharge electrode 3. That is, the discharge electrode 3 determines the direction in which the particles in the form of a mist flow. For example, the spray electrode 1 includes a 27 gauge metal or conductive plastic capillary, and the discharge electrode 3 includes a sharp pin made of stainless steel having a diameter of 0.6 mm.

The spray electrode 1 and the discharge electrode 3 are electrically connected to the drive circuit 10 via respective sheathed metal tubes 6 and 7. In this configuration, a voltage can be applied such that one of the electrodes acts as the positive electrode and the other of the electrodes acts as a negative electrode (for example, the spray electrode 1 serves as a positive electrode and the discharge electrode acts as a negative electrode).

The spray discharge surface 5 is made of a dielectric material. The spray discharge surface 5 of the electrostatic spray device of the specific example of the present invention is made of, for example, polypropylene.

Further, the spray discharge surface 5 has a recess 2 equipped with the spray electrode 1 and a recess 4 equipped with the discharge electrode 3 such that the recesses 2 and 4 are arranged in the vertical direction (gravity direction). According to the electrostatic spray device of the specific example of the present invention, the spray discharge surface 5 is a flat surface except for portions corresponding to the recesses 2 and 4.

However, it should be noted that the spray discharge surface 5 is not limited thereto. The spray discharge surface 5 may be made of another dielectric material and/or may have a curved surface, provided that (i) the composition sprayed from the spray electrode 1 in a hazy form is sufficiently charged, and thus (ii) attracted to Discharge electrode 3, can be determined The direction in which the composition in the form of a mist flows.

The composition to be sprayed using the electrostatic spray device is stored in the reservoir 8 and supplied to the spray electrode 1 via a pump (not shown) and a tube (not shown). Further, the reservoir 8 is connected to the outside via the small-pore air inlet 9, so that the inside of the reservoir 8 cannot be under a negative pressure and the composition is supplied to the spray electrode 1.

Further, in the example in which the spray composition is repeatedly sprayed using the electrostatic spray device, the composition stored in the storage tank 8 is consumed. In this example, in order to continuously use the electrostatic spray device, one of the following first and second configurations may be used.

The first configuration is such that the electrostatic spray device can have a configuration in which the composition can be added to the same reservoir 8. In this example, the reservoir 8 can be separate from the electrostatic spray device. After the storage tank 8 is separated from the electrostatic spray device, the composition is added to the storage tank 8. The reservoir 8 to which the composition has been placed is then reattached to the electrostatic spray device. Alternatively, the reservoir 8 can be secured to an electrostatic spray device, and the reservoir 8 can have an opening through which the composition can be added to the reservoir 8.

The second configuration is such that the reservoir 8 is attached to the electrostatic spray device for exchange with another reservoir 8. The composition is supplied to the electrostatic spray device in such a manner that the other storage tank 8 in which the composition is stored replaces the storage tank 8. For example, the electrostatic spray device can be configured such that the reservoir in which the composition is stored is provided as a defective spare part, and if necessary, the defective spare part can be replaced with another spare part. In this example, the special configuration of the spare part may be, for example, a PCT International Publication in Tokuhyo, The Japanese translation of 2008-508150.

It is inevitable that the electrostatic spray device can be configured such that the electrostatic spray device can no longer be used once all of the components stored in the reservoir 8 are consumed (i.e., the electrostatic spray device has a disposable configuration).

According to the electrostatic spray device, the composition is first supplied from the reservoir 8 to the composition having the tubular spray electrode 1 and applying a high voltage to the spray electrode 1. Since the composition has a specific resistance within the predetermined range as described above, the composition is charged and sprayed from the end of the spray electrode 1 with an electrostatic force. The composition sprayed from the spray electrode 1 is charged with a voltage applied to the spray electrode 1. According to this, the composition thus sprayed is subjected to a Coulomb repulsion, and is split into fine particles to be sprayed in the atmosphere. The composition herein has a viscosity within a predetermined range of (i) as described above, and (ii) a surface tension within a predetermined range. Therefore, the composition can be successfully sprayed and can be successfully split into fine particles.

In the example where the voltage is applied from the drive circuit 10 to the electrostatic spray device by, for example, inserting a battery or operating a built-in electronic timepiece, the liquid stored in the reservoir 8 is sprayed from the spray electrode 1 in the form of fine particles, so that The liquid evaporates instantaneously according to its vapor pressure and surrounding conditions in the vicinity of the electron spray device. Therefore, the amount of liquid sprayed can be determined according to the amount of the ester compound, which is effective in preventing harmful arthropods.

The electrostatic spray device can be configured to intermittently (e.g., circulate at a predetermined loading) or continuously supply the composition of the present invention. The composition supply rate may be, for example, a maximum amount of 5 grams per day or a maximum amount of 3 grams per day. However, it should be noted that the composition supply rate is not limited to the same amount.

The low volatility component of the composition can be accumulated on the spray electrode or in the vicinity of the spray electrode by this electrostatic spray device. This is a common problem with electrostatic spray devices. In the case where the accumulation of this component occurs, the spray electrode may be partially blocked or completely blocked by the composition. In this case, there is a risk that the electrostatic spray may not be carried out effectively or completely impossible. This risk is particularly high in the case where the spray electrode has a narrow tube shape.

In view of this, the composition of the specific example of the present invention is used as a liquid sprayed by an electrostatic spray device and sprayed based on the following spray conditions: (i) the ester compound in the composition has a relatively high concentration (for example, 1.2 mass) The % ester compound), and (ii) the spray were allowed to flow for 14 days under this loading cycle, and the composition was sprayed for 25 seconds every 2 minutes. As a result, the spraying was stably performed without substantially any composition accumulating on or near the spray electrode.

The composition subjected to the electrostatic spray was observed to be in the form of a mist. Accordingly, the actual presence/absence of the thus sprayed composition can be qualitatively determined by visual inspection of the spray electrode (especially the spray electrode 1 illustrated in Figure 1) and the area in the vicinity of the spray electrode.

The quantitative analysis of the electrostatically sprayed composition can be carried out in the following manner: (i) collecting the particles in the form of a mist in the vicinity of the electrostatic spray device, and (ii) the amount of the ester compound in accordance with the type of the ester compound suitable for use thereby. As determined by the method (for example, high performance liquid chromatography (HPLC) or spectrophotometry).

Furthermore, quantitative analysis can also be performed by monitoring the quality change of the entire electrostatic spray device or the mass change of the reservoir (especially the reservoir 8 illustrated in Figure 1).

The effect of the method of control using such an electrostatic spray device can be analyzed in a series of ways known to those skilled in the art. For example, the time period required to knock down 50% (KD50) or kill 50% (KT50) of a harmful insect brood population in a laboratory of known size (eg, the Peet-Grady chamber) can be quantified.

With this configuration, the composition can be successfully electrostatically sprayed to a region where harmful arthropods or harmful arthropods inhabit, and the composition is in a solid form at room temperature. According to this, the following effects are achieved.

That is, according to the control method of the specific example of the present invention, the composition of at least one of the ester compounds represented by the formulas (1) and (2) by electrostatic spraying can instantaneously start and/or stop the spray composition. Without any heating method (for example, a smoking method) or any pressing method (for example, a gas pressurization method or a mechanical pressurization method). It is thus easy to adjust the amount of the ester compound thus sprayed, and thus the consumption of the ester compound can be suppressed. According to the control method of the specific example of the present invention, a method of preventing harmful arthropods can be effectively performed.

Further, according to the control method of the specific example of the present invention, the composition containing at least one of the ester compounds represented by the formulas (1) and (2) respectively has (i) a resistivity within a predetermined range, (ii) a viscosity within a predetermined range, and (iii) a surface tension within a predetermined range. That is, the composition has physical properties suitable for electrostatic spraying. According to this, the composition can be successfully sprayed and the harmful arthropods can be successfully prevented.

Moreover, according to the control method of the specific example of the present invention, the composition can be successfully sprayed by using a device suitable for electrostatic spraying.

Further, according to the composition of the specific example of the present invention, the composition (i) contains at least one of the ester compounds represented by the formulae (1) and (2), respectively, at least one of which is at a standard atmospheric pressure. The force is in a solid form, and (ii) has (a) a resistivity within a predetermined range, (b) a viscosity within a predetermined range, and (c) a surface tension within a predetermined range. Accordingly, (i) various harmful arthropods can be prevented, and (ii) a composition suitable for electrostatic spraying can be provided.

Further, according to the electrostatic spray device of the specific example of the present invention, the composition can be easily sprayed without any heating method (for example, a smoking method) or any pressurizing method (for example, a gas pressurization method or a mechanical pressurization method). . Accordingly, the amount of the composition to be sprayed can be easily adjusted by the electrostatic spray device of the specific example of the present invention. Therefore, the consumption of the ester compound which is an active ingredient and which is effective for preventing harmful arthropods can be suppressed.

The present invention can also be configured as described below.

The method of the present invention for preventing harmful arthropods is preferably configured such that the composition has (i) not less than 1 × 10 ³ Ω m at a temperature of 20 ° C, but not more than 1 × 10 ⁶ Ω m The resistivity, (ii) is not less than 1 mPa at a temperature of 20 °C. s, but no more than 10 mPa. The viscosity of s, and (iii) a surface tension of not less than 20 mN/m at a temperature of 20 ° C but not exceeding 40 mN/m.

The method of the present invention for controlling harmful arthropods is preferably configured such that the composition additionally contains a dispersion medium containing (i) at least one polyol selected from the group consisting of at least one hydroxyl group per molecule, having at least one hydroxyl group per molecule Polyol ether, 1-methoxy-2-propanol acetate, 1-butoxy- a compound of 2-propanol, 1-propoxy-2-ethoxypropane or oxybis(methoxy)propane, and (ii) a physical property-adjusting component in an ester compound in the composition The amount of at least one is not less than 0.1% by mass, but not more than 10% by mass based on the total amount of the composition, and the amount of the dispersion medium in the composition is not less than 90% by mass based on the total amount of the composition. However, it is not more than 99% by mass, and the physical property adjusting component in the composition is not less than 0.5% by mass, but not more than 25% by mass based on the total amount of the composition.

The method of the invention for controlling harmful arthropods is preferably configured such that the electrostatic spray comprises the steps of: supplying the composition to a spray electrode having a tubular shape; applying a voltage across the spray electrode and the discharge electrode corresponding to the spray electrode The composition is in the form of liquid particles; and the composition is sprayed from the spray electrode.

It should be noted that in the specification of the present invention, the term "liquid particle" means a liquid particle, and the shape and size of the liquid particle are not particularly limited. The shape of the liquid particles can be, but is not limited to, a spherical shape. The size of the liquid particles is also not particularly limited. For example, in the case where the liquid particles have a spherical shape, the spherical liquid particles may have a diameter in the range of 1 nm to 1000 μm. However, it should be noted that the size of the spherical liquid particles is not limited thereto.

The composition of the present invention preferably further comprises: a dispersion medium comprising (i) at least one polyol selected from the group consisting of at least one hydroxyl group per molecule, a polyol ether having at least one hydroxyl group per molecule, 1-methoxy- a compound of 2-propanol acetate, 1-butoxy-2-propanol, 1-propoxy-2-ethoxypropane or oxybis(methoxy)propane, and (ii) phys. The property-adjusting component, the amount of at least one of the ester compounds in the composition is a composition The total amount is not less than 0.1% by mass, but not more than 10% by mass, and the amount of the dispersion medium in the composition is not less than 90% by mass, but not more than 99% by mass, based on the total amount of the composition, and The physical property adjusting component in the composition is not less than 0.5% by mass, but not more than 25% by mass based on the total amount of the composition.

The electrostatic spray device of the present invention comprises: a storage tank for storing the composition of the present invention; a composition for supplying the composition from the reservoir to the spray electrode; and a discharge electrode provided near the spray electrode, the composition being applied by applying a spray across the spray The voltage of the electrode and the discharge electrode is electrostatically sprayed from the spray electrode.

Preferred embodiments of the invention are explained above in the manner of reference to the drawings. However, it should be noted that the present invention is not limited to the description of the specific examples described above, but modifications may be made within the scope of the patent application by those skilled in the art. The shapes of the components or combinations of the components described in the above specific examples are merely examples, and various modifications within the technical scope of the present invention can be made in accordance with design conditions and the like.

The invention is more specifically explained below by way of examples. However, it should be noted that the present invention is not limited to the following examples.

In the following examples, the knockdown rates of flying insects (Culex pipiens) were determined and compared with each other in a laboratory (1.8 m x 1.8 m x 1.8 m). In the following examples, 50 female Culex pipiens pallens adults were released into a laboratory that had received the control process according to the following methods, and the number of knocked down Culex pipiens pallens was counted 10 minutes after the release. Therefore, the knockdown rate is obtained.

(Example 1)

The composition of Example 1 was prepared as shown in Table 4 below.

In an example of the invention, (1R)-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [2,3,5,6-tetrafluoro 4-(Methoxymethyl)phenyl]methyl ester is used as the ester compound represented by the formula (1).

The composition shown in Table 4 was supplied to a storage tank (Cleanaer type manufactured by Atrium Innovation Ltd.) of the electrostatic spray device disclosed in European Patent Application Publication No. 1399265. Place the electrostatic spray device into the test chamber and turn it on. The composition was continuously sprayed from the electrostatic spray device for the first 3 minutes immediately after the electrostatic spray device was turned on. Stop Spray for 1 minute. The electrostatic spray device was then started again, allowing a 25 second spray every 2 minutes. As a result, a total of 25 mg of the composition was sprayed in the laboratory. The operation of the electrostatic spray device is then stopped. The test chamber receives the control process in this way.

50 female Culex pipiens pallens adults were subsequently released into the laboratory. The number of knocked down Culex pipiens pallens was counted 10 minutes after the adults were released into the laboratory. Therefore, the knockdown rate is obtained.

(Comparative example 1)

0.3 ml of (1R)-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4- An acetone solution of (methoxymethyl)phenyl]methyl ester was infiltrated into 0.5 g of an insect repellent rod substrate (manufactured by Union Insecticide Co., Inc.). Here, the acetone solution was infiltrated into the matrix so that 0.01% by mass of the ester compound was uniformly contained in the entire matrix.

The substrate thus obtained is dried to obtain an insect repellent rod. Place the insect repellent rod on the bracket in the middle of the bottom of the test chamber. One of the ends of the insect repellent rod is then ignited. Causes the entire insect repellent rod to burn out. The test chamber receives the control process in this way.

50 female Culex pipiens pallens adults were subsequently released into the laboratory. The number of knocked down Culex pipiens pallens was counted 10 minutes after the adults were released into the laboratory. Therefore, the knockdown rate is obtained.

The results of Example 1 and Comparative Example 1 are shown in Table 5 below.

Based on the measurement results, the display example 1 has a higher knockdown rate than the comparative example 1. That is, the results show that Example 1 can be very effective in preventing harmful arthropods. Therefore, the usefulness of the present invention was confirmed.

(Example 2)

The composition of Example 2 was prepared as shown in Table 6 below.

In an example of the invention, (1R)-trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4 -(Methoxymethyl)phenyl]methyl ester was used as the ester compound represented by the formula (2).

The composition shown in Table 6 was supplied to a storage tank of an electrostatic spray device disclosed in European Patent Application Publication No. 1399265 (Cleanaer model manufactured by Atrium Innovation Ltd.). Place the electrostatic spray device into the test chamber and turn it on. The composition was continuously sprayed from the electrostatic spray device for the first 3 minutes immediately after the electrostatic spray device was turned on. Then stop spraying for 1 minute. The electrostatic spray device was then started again, allowing a 25 second spray every 2 minutes. As a result, a total of 25 mg of the composition was sprayed in the laboratory. The operation of the electrostatic spray device is then stopped. The test chamber receives the control process in this way.

50 female Culex pipiens pallens adults were subsequently released into the laboratory. The number of knocked down Culex pipiens pallens was counted 10 minutes after the adults were released into the laboratory. Therefore, the knockdown rate is obtained.

(Comparative example 2)

0.3 ml of (1R)-trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid [2,3,5,6-tetrafluoro-4-(A) Acetone solution of oxymethyl)phenyl]methyl ester was infiltrated into a 0.5 gram repellent rod matrix (by Union In the manufacture of Insecticide Co., Inc.). Here, the acetone solution was infiltrated into the matrix so that 0.01% by mass of the ester compound was uniformly contained in the entire matrix.

The substrate thus obtained is dried to obtain an insect repellent rod. Place the insect repellent rod on the bracket in the middle of the bottom of the test chamber. One of the ends of the insect repellent rod is then ignited. Causes the entire insect repellent rod to burn out. The test chamber receives the control process in this way.

50 female Culex pipiens pallens adults were subsequently released into the laboratory. The number of knocked down Culex pipiens pallens was counted 10 minutes after the adults were released into the laboratory. Therefore, the knockdown rate is obtained.

The results of Example 2 and Comparative Example 2 are shown in Table 7 below.

Based on the measurement results, the display example 2 has a higher knockdown rate than the comparative example 2. That is, the results show that Example 2 can be very effective in preventing harmful arthropods. Therefore, the usefulness of the present invention was confirmed.

(Example 3)

The knockdown rate was determined in the same manner as in Example 1, except that the composition shown in Table 8 below was used instead of the composition shown in Table 4.

(Comparative example 3)

The aerosol can is provided with 0.333 parts by mass of (1R)-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid [(2,3,5). , 6-tetrafluoro-4-(methoxymethyl)phenyl)]methyl ester and 59.677 parts by mass of (2-methoxymethylethoxy)propanol (Dowanol DPM (registered trademark)). The valve portion was then attached to the aerosol canister and 40 parts by mass of propellant (compressed petroleum gas) was supplied to the aerosol canister via the valve portion. Thus, a total of 100 parts by mass of an aerosol (hereinafter referred to as "comparative example 3") was obtained.

The 750 mg composition of Example 3 was sprayed into the test chamber.

50 female Culex pipiens pallens adults were subsequently released into the laboratory. The number of knocked down Culex pipiens pallens was calculated 2 minutes after the adults were released into the laboratory. Therefore, the knockdown rate is obtained.

The results of Example 3 and Comparative Example 3 are shown in Table 9 below.

Based on the measurement results, the display example 3 has a higher knockdown rate than the comparative example 3. That is, the results show that Example 3 is very effective in preventing harmful arthropods. Therefore, the usefulness of the present invention was confirmed.

Industrial utilization

Each of the control methods, compositions, and electrostatic spray devices of the present invention can effectively prevent harmful arthropods without any heating method or any pressing method. The invention is thus applicable to methods of preventing harmful arthropods in indoors (such as houses and factories) or outdoors (such as farms and parks).

1‧‧‧ spray electrode

2‧‧‧For the recess of the spray electrode

3‧‧‧Discharge electrode

4‧‧‧Recesses for discharge electrodes

5‧‧‧Spray discharge surface

6‧‧‧Sheathed metal tube

7‧‧‧Sheathed metal tube

8‧‧‧ storage pool

9‧‧‧ small hole air inlet

10‧‧‧Drive circuit

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view illustrating an electrostatic spray device for spraying a composition according to a specific example of the present invention.

1‧‧‧ spray electrode

2‧‧‧For the recess of the spray electrode

3‧‧‧Discharge electrode

4‧‧‧Recesses for discharge electrodes

5‧‧‧Spray discharge surface

6‧‧‧Sheathed metal tube

7‧‧‧Sheathed metal tube

8‧‧‧ storage pool

9‧‧‧ small hole air inlet

10‧‧‧Drive circuit

Claims (5)

A method for preventing harmful arthropods, the method comprising the steps of: reacting a composition containing at least one of the ester compounds represented by the following formulas (1) and (2) to effectively prevent harmful arthropods Spray to areas where harmful arthropods or harmful arthropods live: And the composition further comprises a dispersion medium containing (i) at least one polyol selected from the group consisting of at least one hydroxyl group per molecule, a polyol ether having at least one hydroxyl group per molecule, 1-methoxy-2- a compound of propanol acetate, 1-butoxy-2-propanol, 1-propoxy-2-ethenyloxypropane and oxybis(methoxy)propane, and (ii) physical property adjustment a component; wherein the compound comprises (2-methoxymethylethoxy)propanol, and the physical property-adjusting component comprises a dilute aqueous solution of sodium acetate, an isoalkane, and water; among the ester compounds in the composition The amount of at least one of the composition is not less than 0.1% by mass, but not more than 10% by mass based on the total amount of the composition; the amount of the dispersion medium in the composition is a large amount based on the total amount of the composition The amount of the physical property-adjusting component in the composition is not less than 0.5% by mass, but not more than 25% by mass, based on 90% by mass, but not more than 99% by mass; The method of claim 1, wherein the composition has (i) a resistivity of not less than 1 × 10 ³ Ω m at a temperature of 20 ° C but not more than 1 × 10 ⁶ Ω m, (ii) Not less than 1 mPa at a temperature of 20 ° C. s, but no more than 10mPa. The viscosity of s, and (iii) not less than 20 mN/m at a temperature of 20 ° C, but not exceeding 40 mN/m. The method of claim 1, wherein the electrostatic spray comprises the steps of: supplying the composition to a spray electrode having a tubular shape; applying a voltage across the spray electrode and a discharge electrode corresponding to the spray electrode, such that the composition In the form of liquid particles; and spraying the composition from the spray electrode. A composition comprising: at least one of ester compounds represented by the following formulas (1) and (2), respectively, having (i) not less than 1 × 10 ³ Ω m at a temperature of 20 ° C, But not more than 1 × 10 ⁶ Ω m resistivity, (ii) at 20 ° C temperature is not less than 1 mPa. s, but no more than 10mPa. The viscosity of s, and (iii) a surface tension of not less than 20 mN/m at a temperature of 20 ° C but not exceeding 40 mN/m: And a dispersion medium comprising (i) at least one polyol selected from the group consisting of at least one hydroxyl group per molecule, a polyol ether having at least one hydroxyl group per molecule, 1-methoxy-2-propanol acetate, 1 a compound of -butoxy-2-propanol, 1-propoxy-2-ethenyloxypropane and oxybis(methoxy)propane, and (ii) a physical property-adjusting component; wherein the compound comprises (2-methoxymethylethoxy)propanol, and the physical property adjusting component comprises a diluted aqueous solution of sodium acetate, an isoparaffin and water; and the amount of at least one of the ester compounds in the composition is Not less than 0.1% by mass, but not more than 10% by mass based on the total amount of the composition; the amount of the dispersion medium in the composition is not less than 90% by mass based on the total amount of the composition, but not More than 99% by mass; the amount of the physical property-adjusting component in the composition is not less than 0.5% by mass, but not more than 25% by mass based on the total amount of the composition. An electrostatic spray device comprising: a storage tank for storing the composition of claim 4; a composition for supplying the composition from the reservoir to the spray electrode; and a discharge electrode disposed adjacent to the spray electrode, the composition being applied across the spray electrode and the discharge electrode The voltage is electrostatically sprayed from the spray electrode.