Pest and mite control composition, aerosol product and spray product using the pest and mite control composition, method for controlling pest and mite, and odor masking method

Abstract

To provide a pest and mite control composition with reduced discomfort caused by phenoxybenzyl-based pyrethroid compounds.SOLUTION: There is provided a pest and mite control composition for controlling pests and mites, the composition comprising the following components (A) and (B): (A) a phenoxybenzyl-based pyrethroid compound; and (B) N-(2-ethylhexyl)bicyclo[2.2.1]hepta-5-ene-2,3-dicarboximide, where the mass ratio (A / B) of the component (A) to the component (B) is 1.2 to 100.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a pest and mite control composition for controlling pests and mites, an aerosol product and a spray product using the pest and mite control composition, a pest and mite control method, and an odor masking method. [Background technology]

[0002] Pyrethroid compounds are used as pest and mite control ingredients for controlling (killing and / or repelling) pests and mites. In the development of pyrethroid compounds, pyrethrin, an active ingredient of Asteraceae plant, is used as a starting compound, and researchers around the world have carried out various structural transformations by chemical synthesis to develop many types of new pyrethroid compounds. Among these pyrethroid compounds, phenoxybenzyl pyrethroid compounds having a phenoxybenzyl structure, such as fenothrin and permethrin, are important compounds in the field of household insecticides, and are made into pest and mite control compositions together with appropriate additives, and are used in the form of spray products such as aerosol products and trigger spray products.

[0003] In this type of pest and mite control composition, it has been proposed to add N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide (hereinafter sometimes referred to as "MGK-264") as a synergist (potentiator) to the phenoxybenzyl pyrethroid compound (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 6-263605 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, MGK-264 is blended in an amount greater than that of the phenoxybenzyl pyrethroid compound in order to allow the MGK-264 to function as a synergist for the phenoxybenzyl pyrethroid compound.

[0006] However, when a phenoxybenzyl pyrethroid compound is designed in the form of a spray product, the compound is broken down into fine particles, which can easily penetrate the nostrils, making the odor originating from the compound (compound odor) particularly noticeable, which may cause discomfort to the user and those around them.

[0007] As a method for reducing the unpleasant feeling caused by such odor, for example, the addition of a fragrance component can be considered. However, when used as a household insecticide, there is a tendency in recent years to prefer unscented products that do not have a fragrance component. Therefore, if it is possible to reduce the compound odor without using a fragrance component, it will be possible to meet various needs.

[0008] In view of the above circumstances, the present invention aims to provide a pest / mite control composition that suppresses the discomfort caused by phenoxybenzyl pyrethroid compounds, an aerosol product and spray product that use the pest / mite control composition, a pest / mite control method, and an odor masking method. [Means for solving the problem]

[0009] As mentioned above, MGK-264 has been known to enhance the efficacy of pyrethroid compounds, and has been used exclusively as a synergist for phenoxybenzyl pyrethroid compounds. In addition, in order to function as a synergist, a larger amount of MGK-264 is blended than the amount of phenoxybenzyl pyrethroid compounds. However, in order to solve the above problems, the present inventors have conducted intensive research and found that although MGK-264 has a slight fragrance, when the content is increased as in the case of using it as a synergist, the fragrance derived from MGK-264 itself is perceived as an unpleasant odor. On the other hand, by making the content of MGK-264 smaller than the content of the phenoxybenzyl pyrethroid compounds and setting the mass ratio of the two within a specific range, it has been surprisingly found that the unpleasant odor of MGK-264 itself is not perceived, and the odor specific to the phenoxybenzyl pyrethroid compounds can be masked, thereby suppressing the unpleasant feeling caused by the odor, and thus the present invention has been completed.

[0010] That is, the pest and mite control composition according to the present invention for solving the above problems is: A pest and mite control composition for controlling pests and mites, The following components (A) and (B): (A) Phenoxybenzyl pyrethroid compounds (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide Contains The mass ratio (A / B) of the component (A) to the component (B) is 1.2-100.

[0011] According to the pest and mite control composition of the present configuration, by setting the mass ratio of component (A) to component (B) within the above range, it is possible to mask the odor originating from component (A) while suppressing the unpleasant odor of component (B) itself, thereby suppressing the unpleasant feeling caused by component (A).

[0012] In the pest and mite control composition according to the present invention, The component (A) is preferably fenothrin and / or permethrin.

[0013] According to the pest and mite control composition of this configuration, by selecting the above compound as the (A) component, it is possible to mask the odor originating from the above compound, which has a particularly high pest and mite control effect. Therefore, the pest and mite control composition can increase the treatment amount by the amount of the odor originating from the (A) component reduced compared to when the (B) component is not contained, and therefore the overall control effect can be improved.

[0014] In the pest and mite control composition according to the present invention, The pest is preferably a creeping pest.

[0015] The pest and mite control composition of this configuration can control crawling pests while masking the odor derived from component (A). Therefore, the pest and mite control composition can increase the amount of treatment by the amount of odor derived from component (A) that is reduced compared to when component (B) is not contained, thereby improving the overall control effect.

[0016] In the pest and mite control composition according to the present invention, The mite is preferably a house dust mite.

[0017] The pest and mite control composition of this configuration can control indoor dust mites while masking the odor derived from component (A). Therefore, the pest and mite control composition can increase the amount of treatment by the amount of the odor derived from component (A) that is reduced compared to when component (B) is not contained, thereby improving the overall control effect.

[0018] In the pest and mite control composition according to the present invention, Preferably for indoor use.

[0019] Here, compared to outdoor spaces, indoor spaces are more closed spaces, and odors tend to accumulate, which tends to cause discomfort. However, in the pest and mite control composition, the odor originating from component (A) is masked by component (B), and the odor originating from component (A) is reduced compared to when component (B) is not contained, so the amount of treatment can be increased accordingly. Therefore, since the pest and mite control composition is for indoor use, it can improve the overall control effect.

[0020] Another aerosol product according to the present invention for solving the above problems is: An aerosol product using the pest and mite control composition, The aerosol concentrate (L) contains the component (A) and the component (B), and a propellant (G), The volume ratio (L / G) of the aerosol concentrate (L) to the propellant (G) is set to 5 / 95 to 70 / 30.

[0021] According to the aerosol product of this configuration, the pest and mite control composition can reach a wider range while masking the odor derived from the (A) component. Moreover, by setting the volume ratio (L / G) of the aerosol concentrate (L) and the propellant (G) within the above range, the particle size of the sprayed particles can be made appropriate, so that the sprayed particles can reach a wider range. Therefore, the control effect can be improved by the fact that the (A) component can reach such a wider range.

[0022] In the aerosol product according to the present invention, It is preferable that the amount of the liquid to be injected each time is set to 0.1 to 3.0 mL.

[0023] According to the aerosol product of this configuration, by setting the spray volume per time to the above lower limit or more, the pest and mite control composition can be sufficiently diffused in the treatment space. In addition, since there is no need to significantly increase the number of sprays to obtain the same effect, the deterioration of usability can be suppressed. By setting the spray volume per time to the above upper limit or less, the content liquid of the aerosol product can be suppressed from running out early. In addition, since there is no need to store a large amount of content liquid in the pressure-resistant container, the pressure-resistant container can be suppressed from becoming large, and the economical efficiency can be suppressed from decreasing.

[0024] Another spray product according to the present invention for solving the above problems is: The present invention relates to the use of the above-mentioned pest and mite control composition.

[0025] According to the spray product of this configuration, the pest and mite control composition can be applied over a wider range while masking the odor derived from the (A) component. Therefore, the control effect can be improved by the amount of the (A) component being applied over such a wide range. In addition, by forming it into a spray product, it can be manufactured more easily than an aerosol product. In addition, since the spray product does not use a propellant, it is easier to handle than an aerosol product.

[0026] Another method for controlling pests and mites according to the present invention for solving the above problems is to The pest and mite control composition is sprayed.

[0027] According to the pest and mite control method of this configuration, pest and mite control can be performed while masking the odor derived from component (A), and therefore, since discomfort is suppressed, the treatment amount of the pest and mite control composition can be increased, thereby further enhancing the pest and mite control effect.

[0028] Another odor masking method according to the present invention for solving the above problems includes: (A) An odor masking method for masking an odor originating from a phenoxybenzyl pyrethroid compound, comprising: (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide is blended with the (A) phenoxybenzyl pyrethroid compound such that the mass ratio (A / B) of the (A) phenoxybenzyl pyrethroid compound to the (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide is 1.2 to 100.

[0029] According to the odor masking method of this configuration, by blending (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide with (A) phenoxybenzyl pyrethroid in a mass ratio (A / B) within the above range, it is possible to mask the odor originating from the (A) phenoxybenzyl pyrethroid compound, thereby suppressing the discomfort caused by the (A) phenoxybenzyl pyrethroid. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Hereinafter, the embodiments of the pest and mite control composition, the aerosol product and spray product using the pest and mite control composition, the pest and mite control method, and the odor masking method of the present invention will be described. However, the present invention is not intended to be limited to the configurations described in the embodiments described below. In this specification, the unit of content "w / v%" is synonymous with "g / 100mL", and when there is a notation "~" indicating a range in this specification, it is assumed that the upper and lower limits are included.

[0031] [Insect and mite control composition] The pest and mite control composition of this embodiment is A pest and mite control composition for controlling pests and mites, The following components (A) and (B): (A) Phenoxybenzyl pyrethroid compounds (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide Contains:

[0032] The pest and mite control composition is a liquid composition, and as described below, it may be used as it is (liquid), or may be contained in a spray container and used as a spray product, or may be contained in a pressure-resistant container together with a propellant as an aerosol concentrate and used as an aerosol product. When used as an aerosol product, the pest and mite control composition is an aerosol concentrate excluding the propellant.

[0033] <Component (A)> The phenoxybenzyl pyrethroid compound, which is the component (A), is a pyrethroid compound having a phenoxybenzyl group. The phenoxybenzyl group may have one or more hydrogen atoms substituted. Examples of such phenoxybenzyl pyrethroid compounds include fenothrin, permethrin, cyphenothrin, cyfluthrin, and cypermethrin. Among these, fenothrin and permethrin are preferred. By selecting the above-mentioned compound as the component (A), it is possible to mask the odor originating from the above-mentioned compound, which has a particularly high pest and mite control effect. Therefore, the pest and mite control composition can increase the amount of treatment by the amount of odor originating from the component (A) compared to when the component (B) is not contained, thereby improving the overall control effect. The component (A) can be a commercially available product or a product synthesized by a known method. In addition, when optical isomers or geometric isomers based on asymmetric carbon exist in the acid component or alcohol portion of the phenoxybenzyl pyrethroid compound, it is needless to say that each of them or any mixture thereof is also included in the present invention. The component (A) may use one type alone or a mixture of two or more types.

[0034] The content of the (A) component in the pest and mite control composition is preferably 0.5 to 100 w / v%, more preferably 1 to 100 w / v%, even more preferably 1 to 65 w / v%, and particularly preferably 5 to 50 w / v%. Specifically, for example, when the pest and mite control composition is used as it is (liquid) or as a spray product, the content of the (A) component is preferably 1 to 100 w / v%, more preferably 1 to 65 w / v%, and even more preferably 5 to 50 w / v%. When the pest and mite control composition is used as an aerosol product, the content of the (A) component is preferably 0.5 to 100 w / v%, more preferably 1 to 100 w / v%, even more preferably 1 to 65 w / v%, and particularly preferably 5 to 50 w / v%. By setting the content of the (A) component within the above appropriate range, the control effect can be enhanced and the odor derived from the (A) component by the (B) component can be more appropriately masked.

[0035] <(B) component> The component (B), N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide, is a compound also known as MGK-264.

[0036] N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide has two types of isomers, Endo type and Exo type, as a stereostructure (isomer). N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide can be used alone as Endo type or Exo type, but it is useful to use a mixture in which the isomer ratio (Endo / Exo) between Endo type and Exo type is preferably adjusted to 20 / 80 to 80 / 20, more preferably 30 / 70 to 70 / 30, and even more preferably 40 / 60 to 60 / 40 in molar ratio. The isomer ratio between the Endo type and the Exo type can be measured by the liquid chromatography analysis method described in "Chiral high-performance liquid chromatography of N-octyl bicycloheptene dicarboximide and confirmatory studies using liquid chromatography-tandem mass spectrometry and two-dimensional nuclear magnetic resonance spectroscopy" in Journal of Chromatography A (Vol. 864, 1999, pp. 271-281). By adjusting the isomer ratio (Endo / Exo) to the above appropriate range, the control effect against various pests and mites can be improved. Note that, since the molecular weights of N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide are equal between the Endo type and the Exo type, the isomer ratio corresponds to the mass ratio. Hereinafter, a method for producing N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide that can adjust the isomer ratio (Endo / Exo) to a specific range, that is, a method for adjusting the isomer ratio (Endo / Exo), will be described.

[0037] For example, by using Endo-type himic anhydride (5-norbornene-2,3-dicarboxylic anhydride) and carrying out the following steps (1) to (3), a mixture of N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide in which Endo-type and Exo-type are mixed in a specific isomer ratio (Endo / Exo) can be obtained. Endo-type himic anhydride (5-norbornene-2,3-dicarboxylic anhydride) is relatively inexpensive and is suitable as a raw material.

[0038] Step (1): Endo-type anhydrous himic acid is isomerized (isomerization reaction). As a result, the anhydrous himic acid becomes a mixture of Endo-type and Exo-type. Basically, the isomer ratio (Endo / Exo) can be adjusted in this isomerization reaction. Step (2): The isomerization reaction product obtained in step (1) is condensed with 2-ethylhexylamine (condensation reaction). This results in a mixture of Endo type N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide and Exo type N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide. Step (3): N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide is distilled from the condensation reaction solution containing the condensation reaction product obtained in step (2). As a result, N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide is separated from the condensation reaction solution containing unreacted materials, by-products, etc. in a mixed state of Endo and Exo types. In such distillation, the isomer ratio (Endo / Exo) can also be further adjusted.

[0039] In step (1), Endo-type anhydrous himic acid is added to a reaction vessel without adding an organic solvent or with an organic solvent having a boiling point of 190 to 300°C, and heated at 190°C or higher for 30 minutes or more. As a result, a part of Endo-type anhydrous himic acid is isomerized to generate Exo-type anhydrous himic acid. Usually, the ratio of Exo-type tends to increase as the reaction time is increased. Therefore, the isomer ratio (Endo / Exo) can be adjusted by adjusting the reaction time, and for example, the isomer ratio (Endo / Exo) between Endo-type and Exo-type can be adjusted to a range of 20 / 80 to 80 / 20. When no organic solvent is added, a part of the anhydrous himic acid may sublimate and adhere to the top of the reaction vessel, but since isomerization is progressing even in such adhesion, it can be included in the isomerization reaction product. As the organic solvent used in step (1), an aliphatic hydrocarbon solvent, an aromatic hydrocarbon solvent, an ester solvent, an ether solvent, etc. can be used, and kerosene is particularly preferable. Kerosene is suitable as a solvent for use in the reactions in steps (1) and (2) and is easy to handle.

[0040] In step (2), the isomerization reaction liquid containing the isomerization reaction product obtained in step (1) is allowed to cool to room temperature. After cooling, 2-ethylhexylamine is added to the isomerization reaction liquid. When an organic solvent is added in step (1), 2-ethylhexylamine is added alone to the isomerization reaction liquid. When an organic solvent is not added in step (1), 2-ethylhexylamine is added to the isomerization reaction liquid together with water or an organic solvent having a boiling point of 110 to 150°C (toluene, xylene, etc.). After the addition of 2-ethylhexylamine, the isomerization reaction product obtained in step (1) is subjected to a condensation reaction with 2-ethylhexylamine by heating at 90 to 160°C for 30 minutes or more. In such a condensation reaction, the isomerization reaction ratio between the Endo type and the Exo type (Endo / Exo) does not change significantly. Therefore, the isomer ratio (Endo / Exo) is basically determined by the isomerization reaction in step (1). In step (2), if water or an organic solvent (kerosene, toluene, xylene, etc.) is used, the anhydrous himic acid adhering to the top of the reaction vessel is washed out and can be subjected to the condensation reaction, thereby increasing the yield of the reaction product. If water is added, safety in production can be improved. After the condensation reaction is completed, the pH of the condensation reaction liquid is adjusted to 5.5 to 7.0 using soda ash (sodium carbonate) as necessary, and used in the next step (3).

[0041] In step (3), the condensation reaction liquid containing the condensation reaction product obtained in step (2) is put into a distillation apparatus, and the condensation reaction product, N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide, is distilled. The distillation temperature can be set to 160-170°C / 3mmHg (160-170°C / 0.399kPa). A normal distillation apparatus can be used as the distillation apparatus. In addition, by heating the N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide separated by distillation to 210°C or higher, the isomerization from the Endo type to the Exo type can be further promoted. In this way, even in step (3), the isomer ratio between the Endo type and the Exo type (Endo / Exo) can be further adjusted.

[0042] The content of component (B) in the pest and mite control composition is preferably 0.2 to 50 w / v%, more preferably 0.3 to 40 w / v%, and even more preferably 0.4 to 30 w / v%. By setting the content of component (B) within the above appropriate range, the odor originating from component (A) can be more appropriately masked by component (B).

[0043] <Mass ratio of component (A) to component (B) (A / B)> The contents of the above-mentioned (A) and (B) components can be set according to the mass ratio (A / B) of the (A) component to the (B) component. The mass ratio (A / B) of the (A) component to the (B) component is 1.2 to 100, more preferably 2 to 50, and even more preferably 4 to 40. By setting the mass ratio of the (A) component to the (B) component within the above range, it is possible to mask the odor originating from the (A) component while suppressing the unpleasant odor of the (B) component itself, and therefore it is possible to suppress the unpleasant feeling originating from the (A) component.

[0044] <Solvent> The pest and mite control composition is usually in a state where the (A) component and the (B) component are dissolved or dispersed in an organic solvent or water as a solvent. Examples of the organic solvent include lower alcohols having 2 to 3 carbon atoms, normal paraffins (e.g., product names: Neothiozole, Deotomizole, etc.), isoparaffins (e.g., product names: Isopar M, Isopar G, Isopar H, Isopar L, IP Solvent 1620, IP Solvent 2028, IP Solvent 2835, IP Clean LX, Idemitsu Supersol FP25, Idemitsu Supersol LA25, Isozole, etc.), and other hydrocarbon-based solvents, higher fatty acid esters having 16 to 30 carbon atoms such as isopropyl myristate (IPM) and hexyl laurate, and glycol ether-based solvents having 3 to 10 carbon atoms, ketone-based solvents, and the like. Among these, lower alcohols and hydrocarbon-based solvents having 2 to 3 carbon atoms are preferred, and ethanol, neothiozole, and 2-propanol are more preferred. By selecting the above-mentioned appropriate solvent as the solvent, it is possible to suppress a decrease in the degree of odor masking by component (B). The solvent can be used alone or as a mixture of two or more kinds.

[0045] The content of the solvent in the pest and mite control composition can be appropriately set as the remainder of all the components of the pest and mite control composition. Specifically, for example, the content of the solvent can be set to preferably 5 to 99 w / v%, more preferably 10 to 95 w / v%, and even more preferably 30 to 95 w / v%. By setting the content of the solvent within the above range, the viscosity of the pest and mite control composition can be made appropriate, so that, for example, by preparing it as an aerosol product or a spray product, the spray particles with the odor derived from the (A) component masked can reach a wider range.

[0046] <Other ingredients> The pest and mite control composition may contain, as necessary, surfactants, antifungal agents, antibacterial agents, bactericides, fragrances, deodorants, stabilizers, antistatic agents, antifoaming agents, excipients, etc., as components other than component (A), component (B), and any solvent. Examples of antifungal agents, antibacterial agents, and bactericides include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforine, 3-methyl-4-isopropylphenol, and ortho-phenylphenol. Examples of fragrances include orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, phenylethyl alcohol, amylcinnamic aldehyde, cumin aldehyde, benzyl acetate, green leaf alcohol and green leaf aldehyde, which are known as the "green scent."

[0047] <Application form of pest and mite control composition> The pest and mite control composition can be used as it is (liquid), and can be prepared as, for example, an aerosol product or a spray product. By preparing the pest and mite control composition as an aerosol product or a spray product, the odor derived from the (A) component can be masked while the (A) component can be delivered to a wider range. Therefore, the pest and mite control composition can enhance the control effect by the extent to which the (A) component can be delivered to a wider range. In addition, the pest and mite control composition prepared as an aerosol product or a spray product can also be called a pest and mite control product. In this case, the pest and mite control product corresponds to one that contains the pest and mite control composition and is prepared as an aerosol product or a spray product. Hereinafter, such aerosol products and spray products will be described.

[0048] <Aerosol products> The aerosol product uses components (A) and (B) and contains an aerosol concentrate (L) containing components (A) and (B) and a propellant (G). Such an aerosol product can be prepared by sealing a liquid pest and mite control composition and a propellant in a pressure-resistant container. Examples of propellants include liquefied petroleum gas (LPG), dimethyl ether (DME), hydrofluoroolefin, nitrogen gas, carbon dioxide gas, nitrous oxide, compressed air, and the like. The aerosol product is preferably a metered-volume aerosol product having a metered-volume injection valve attached to a pressure-resistant container. The metered-volume aerosol product can spray an appropriate amount of pest and mite control composition according to the number of sprays, so there is no need to spray an unnecessarily large amount of pest and mite control composition, and the pest and mite control composition containing these can reach a wider range in a state where the odor derived from component (A) is masked by component (B).

[0049] In the aerosol product, the volume ratio (L / G) of the aerosol concentrate (L) to the propellant (G) in the pressure-resistant container is set to 5 / 95 to 70 / 30 by volume, preferably 20 / 80 to 60 / 40, and more preferably 40 / 60 to 60 / 40. By setting the volume ratio (L / G) within the above range, the particle size of the spray particles can be made appropriate, so that the spray particles can reach a wider range. Therefore, the control effect can be increased by the amount that the (A) component can reach such a wider range.

[0050] The internal pressure of the aerosol container is not particularly limited, but is preferably set to 0.65 MPa or less, more preferably 0.15 to 0.60 MPa, even more preferably 0.20 to 0.55 MPa, and particularly preferably 0.25 to 0.55 MPa at 25° C. In this embodiment, the internal pressure of the aerosol container of the aerosol product is measured by the following procedure. (1) Immerse the aerosol product in a constant temperature water bath at 25±0.5°C for 30 minutes. (2) Next, hold the aerosol product upright, airtightly insert the stem of the aerosol container into the insertion port of the pressure gauge, and read the measured pressure to two decimal places. (3) The above measurement shall be performed once, and the value read without rounding shall be the internal pressure value.

[0051] When the aerosol product is configured as a constant-volume spray type, that is, when it is a constant-volume spray type aerosol product, the spray volume per time is not particularly limited, but is preferably set to 0.1 to 3.0 mL, more preferably 0.1 to 2.0 mL, and even more preferably 0.2 to 1.0 mL. When the spray volume per time is set to less than 0.1 mL, the pest and mite control composition may not be sufficiently diffused in the treatment space. In addition, the number of sprays may be significantly increased to obtain the same effect, which may lead to a decrease in usability. In contrast, by setting the spray volume per time to 0.1 mL or more, the pest and mite control composition can be sufficiently diffused in the treatment space. In addition, since it is not necessary to significantly increase the number of sprays to obtain the same effect, the decrease in usability can be suppressed. When the spray volume per time is set to more than 3.0 mL, the sprayed content liquid may adhere to the floor, wall, etc. locally in the treatment space in a significantly large amount, which may lead to contamination of the adhesion site. In addition, there is a risk that the liquid content of the aerosol product will run out early, and if a large amount of liquid content is stored to avoid this, this may lead to an increase in the size of the pressure-resistant container, which may lead to a decrease in economic efficiency. In contrast, by setting the spray volume per time to 3.0 mL or less, it is possible to prevent the liquid content of the aerosol product from running out early. In addition, since there is no need to store a large amount of liquid content in the pressure-resistant container, it is possible to prevent the pressure-resistant container from becoming large, and therefore to prevent a decrease in economic efficiency.

[0052] <Spray products> The spray product uses a pest and mite control composition. Such a spray product can be prepared as a pump-type spray product by storing the liquid pest and mite control composition directly in a container with a manual trigger pump. According to the spray product of this configuration, the pest and mite control composition can be treated over a wider range while masking the odor derived from the (A) component. Therefore, the control effect can be improved by the amount that the (A) component can be treated over such a wide range. In addition, by making it into a spray product, it can be manufactured more easily than an aerosol product. In addition, since the spray product does not use a propellant, it is easier to handle than an aerosol product.

[0053] <Applicable space> The space to which the pest and mite control composition of this embodiment, the aerosol product using the pest and mite control composition, and the spray product are applied may be either an outdoor space or an indoor space, and is not particularly limited. Examples of indoor spaces include closets, cupboards, dressers, cupboards, toilets, bathhouses, storage rooms, living rooms, dining rooms, warehouses, car interiors, furniture, and furniture gaps. Of these, the application space is preferably an indoor space. That is, the pest and mite control composition of this embodiment is preferably for indoor use. Here, compared with outdoor spaces, indoor spaces, which are more closed spaces, tend to have odors and are more likely to cause discomfort. However, in the pest and mite control composition, the odor derived from component (A) is masked by component (B), and the odor derived from component (A) is reduced compared to when component (B) is not contained, so the amount of treatment can be increased accordingly. Therefore, the pest and mite control composition is for indoor use, and thus the overall control effect can be improved.

[0054] When the pest and mite control composition of the present embodiment is prepared as an aerosol product, the treatment space to be treated with the aerosol product is preferably an indoor space, but may be an outdoor space as long as there is almost no air movement. The volume of the application space is not particularly limited, but is preferably 2.0 m or more. 3Less than 2.0~18.8m clearance 3 The volume of a small space is 18.8 to 33.3 m, which is equivalent to a room of 4.5 to 8 tatami mats. 3 The indoor space has a volume of 33.3 to 66.6 m, which is equivalent to a room of 8 to 16 tatami mats. 3 The spacious interior space is 2.0 to 18.8 m. 3 The volume of a small space is 18.8 to 33.3 m, which is equivalent to a room of 4.5 to 8 tatami mats. 3 The volume of the room is 33.3 to 66.6 m, which is equivalent to a room of 8 to 16 tatami mats. 3 It is preferable to have a spacious indoor space with a volume of 18.8 to 33.3 m, which is equivalent to a room of 4.5 to 8 tatami mats. 3 For example, the volume of a room of 4.5 to 8 tatami mats is 18.8 to 33.3 m. 3 When the pest and mite control composition is sprayed as an aerosol once or multiple times in an indoor space, the amount of the component (A) released into the air is 0.1 to 50 mg / m 3 In indoor spaces with larger or smaller volumes, the amount of component (A) released into the air of the indoor space is set to 0.1 to 50 mg / m depending on the volume of the indoor space. 3 By appropriately setting the number of sprays, spray volume, etc. so that the same control effect can be obtained regardless of the volume of the indoor space. The frequency of application of the pest and mite control method of this embodiment described below is preferably such that the amount of component (A) released falls within the above range at an appropriate time depending on the occurrence frequency and situation of pests and mites.

[0055] <Target pests and mites> Examples of pests and mites that are targeted by the pest and mite control composition of this embodiment, and the aerosol products and spray products using the pest and mite control composition include crawling pests (for example, cockroaches such as the American cockroach, the Smoky brown cockroach, and the German cockroach, bedbugs such as bedbugs (cimex), and Taiwanese bedbugs (Nettite bedbugs), stink bugs such as the brown stink bug, ants such as the Japanese wood ant, the Japanese water ant, the brown ant, the Japanese house ant, the Japanese fire ant, and the Japanese fire ant, spiders such as the huntsman spider, the Japanese house spider, and the redback spider, millipedes, centipedes such as the Japanese water lily, pillbugs, and woodlice. Examples of such pests include insects, termites such as Formosan termite and Yamato termite, caterpillars, house mites, ticks, and fleas), flying pests (for example, mosquitoes such as Culex pipiens, Aedes albopictus, Aedes aegypti, and Culex pipiens, flies such as house flies and flesh flies, small flies, moths, midges, bees, and moths), clothing pests (for example, moths such as Japanese burr moth and Japanese box moth, dermestid beetles such as Dermestid beetles and Dermestid beetles), grain storage pests (for example, rice weevils), and indoor dust mites (for example, Tyrophagus putrescentiae, flour mites, dust mites, chigger mites, house dust mites, Dermatophagoides farinae, and Dermatophagoides pteronyssinus). Of these, the pest is preferably a crawling pest, which allows control of crawling pests while masking the odor derived from the (A) component. Therefore, the pest and mite control composition can increase the amount of treatment to compensate for the reduced odor derived from the (A) component compared to when the (B) component is not contained, thereby improving the overall control effect. In addition, the mite is preferably an indoor dust mite, which allows control of indoor dust mites while masking the odor derived from the (A) component. Therefore, the pest and mite control composition can increase the amount of treatment to compensate for the reduced odor derived from the (A) component compared to when the (B) component is not contained, thereby improving the overall control effect.

[0056] [Methods for controlling pests and mites] The pest and mite control method of this embodiment is a method of spraying the above-mentioned pest and mite control composition.Specifically, for example, when the pest and mite control composition is prepared as an aerosol product, the pest and mite control composition is sprayed from the aerosol product into the above-mentioned application space, thereby controlling the pest and mite that are the above-mentioned control target.When the pest and mite control composition is prepared as a spray product, the pest and mite control composition is sprayed from the spray product into the above-mentioned application space, thereby controlling the pest and mite that are the above-mentioned control target.

[0057] According to the pest and mite control method of this embodiment, pests and mites can be controlled while masking the odor derived from component (A). Since discomfort is suppressed, the amount of the pest and mite control composition that can be treated can be increased, and the pest and mite control effect can be further improved.

[0058] [Odor masking method] The odor masking method of the present embodiment is an odor masking method for masking odors derived from (A) a phenoxybenzyl pyrethroid compound (hereinafter also referred to as "compound (A)"), in which (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide (hereinafter also referred to as "compound (B)") is blended with compound (A) so that the mass ratio (A / B) of compound (A) to compound (B) is 1.2 to 100.

[0059] In other words, the odor masking method of this embodiment corresponds to a method of blending an (A) compound corresponding to the above-mentioned (A) component and a (B) compound corresponding to the above-mentioned (B) component such that the mass ratio (A / B) of the (A) compound to the (B) compound is 1.2 to 100, as described above.

[0060] The (A) compound, the (B) compound, and the mass ratio (A / B) are the same as the (A) component, the (B) component, and the mass ratio (A / B) in the pest and mite control composition described above, and therefore detailed explanation is omitted.

[0061] In the odor masking method of the present embodiment, the order in which the compound (A) and the compound (B) are mixed is not particularly limited. In addition, when the compound (A) and the compound (B) are mixed, other components may be appropriately mixed.

[0062] According to the odor masking method of the present embodiment, by blending compound (B) with compound (A) such that the mass ratio (A / B) of compound (A) to compound (B) falls within the above-mentioned range, the odor originating from compound (A) can be masked, thereby suppressing the unpleasant sensation caused by compound (A). EXAMPLES

[0063] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0064] [Example 1] Aerosol product According to the formulation shown in Table 1, 12.0 g (40.0 w / v%) of fenothrin as component (A) and 0.12 g (0.4 w / v%) of MGK-264 (isomer ratio (Endo / Exo) = 30 / 70) as component (B) were dissolved in ethanol as a solvent (C) to prepare 30 mL of an aerosol concentrate. 30 mL of this aerosol concentrate (L) and 30 mL of liquefied petroleum gas (G) were pressurized and filled into an aerosol container equipped with a metered dose injection valve (injection volume per time: 0.4 mL) to obtain the pest and mite control aerosol product of Example 1. The volume ratio (L / G) of 30 mL of the aerosol concentrate to 30 mL of the propellant was 50 / 50.

[0065] [Examples 2 to 13, Comparative Examples 1 to 12] Aerosol products Pest and mite control aerosol products of Examples 2 to 13 and Comparative Examples 1 to 12 were prepared in the same manner as in Example 1, except that the formulation, volume ratio (L / G), and spray volume per one time were in accordance with those shown in Tables 1 to 5. Neothiosol used in Example 7 was normal paraffin. In Comparative Examples 11 and 12, imiprothrin was used as the (A)' non-phenoxybenzyl pyrethroid compound instead of the (A) phenoxybenzyl pyrethroid compound.

[0066] [Example 14] Spray product A pest and mite control composition was prepared in the same manner as in Example 1, except that the formulation shown in Table 6 was followed. The composition was then filled into a trigger spray product container with a single spray volume of 1 mL to prepare the pest and mite control spray product of Example 14.

[0067] [Examples 15 to 18, Comparative Examples 13 to 14] Spray products Pest and mite control spray products of Examples 15 to 18 and Comparative Examples 13 to 14 were prepared in the same manner as in Example 14, except for following the formulations shown in Tables 6 to 7. Neothiosol used in Example 17 is normal paraffin.

[0068] [Odor masking effect and odor pleasantness / unpleasantness evaluation] The pest and mite control aerosol products of Examples 1 to 13 and Comparative Examples 1 to 12, and the pest and mite control spray products of Examples 14 to 18 and Comparative Examples 13 to 14 were used as test samples, and the odor masking effect and the pleasantness / unpleasantness of the odor were evaluated for each test sample.

[0069] Five pre-trained expert assessors each assessed the volume of 2 m 3Each subject entered the space and sprayed each test sample twice in succession, and recognized the odor originating from component (A) and component (A)' (pest and mite control components). The evaluators scored the odor recognized from the test samples on a 5-point scale from 1 point to 5 points according to the masking evaluation criteria and the pleasant / unpleasant evaluation criteria below, respectively, to obtain an evaluation value. A higher evaluation value indicates a greater degree of masking of the odor and a more pleasant odor (more suppressed unpleasantness). The average evaluation values ​​of the five evaluators were calculated and each was evaluated according to the following criteria. The results are shown in Tables 1 to 7.

[0070] <Odor masking effect> (Scoring criteria) 1 point: Strong odor from pest and mite control ingredients 2 points: The odor caused by pest and mite repellent ingredients is noticeable. 3 points: The odor caused by the pest and mite control ingredients is weakly noticeable. 4 points: Almost no odor from pest and mite control ingredients 5 points: No odor from pest and mite control ingredients (Criteria for evaluation value (average value)) A: More than 3.5 points and less than 5.0 points (excellent) B: More than 2.5 points and less than 3.5 points (good) C: 1.0 points or more and 2.5 points or less (defective)

[0071] <Odor Pleasant / Unpleasant> (Scoring criteria) 1 point: Unpleasant odor 2 points: Somewhat unpleasant odor 3 points: Neither unpleasant nor pleasant odor 4 points: Somewhat pleasant odor 5 points: Pleasant odor (Criteria for evaluation value (average value)) A: More than 3.5 points and less than 5.0 points (excellent) B: More than 2.5 points and less than 3.5 points (good) C: 1.0 points or more and 2.5 points or less (defective)

[0072]

Table 1

[0073]

Table 2

[0074]

Table 3

[0075]

Table 4

[0076]

Table 5

[0077]

Table 6

[0078]

Table 7

[0079] The pest and mite control aerosol products of Examples 1 to 8, which contain fenothrin as the (A) component and MGK-264 as the (B) component and have a mass ratio (A / B) of the (A) component to the (B) component of 1.2 to 100, were shown to have an excellent effect of masking the odor derived from the (A) component, and have a pleasant odor (unpleasantness is suppressed). Even when permethrin was used instead of fenothrin as the (A) component, the pest and mite control aerosol product of Example 9, which has a mass ratio (A / B) of the (A) component to the (B) component of 1.2 to 100, was shown to have an excellent effect of masking the odor derived from the (A) component, and have a pleasant odor. Even when the liquid-to-gas ratio and the volume per spray were changed, the pest and mite control aerosol products of Examples 10 to 13, in which the mass ratio (A / B) of component (A) to component (B) was in the range of 1.2 to 100, were shown to have an excellent odor masking effect originating from component (A) and to have a pleasant odor.

[0080] In contrast, when fenothrin was used as the (A) component, the pest and mite control aerosol products of Comparative Examples 1 and 2, which did not contain the (B) component, and the pest and mite control aerosol products of Comparative Examples 3 to 7, which contained the (B) component but did not satisfy the mass ratio (A / B) of 1.2 to 100, were shown to be inferior in at least one of the odor masking effect and the pleasantness / unpleasantness of the odor. Even when permethrin was used as the (A) component, the pest and mite control aerosol product of Comparative Example 8, which did not contain the (B) component, and the pest and mite control aerosol products of Comparative Examples 9 and 10, which contained the (B) component but did not satisfy the mass ratio (A / B) of 1.2 to 100, were shown to be inferior in at least one of the odor masking effect and the pleasantness / unpleasantness of the odor.

[0081] When a non-phenoxybenzyl pyrethroid compound (A)' was used instead of component (A), the odor masking effect and the pleasantness / unpleasantness of the odor were both inferior in both the pest and mite control aerosol product of Comparative Example 11, which does not contain component (B), and the pest and mite control aerosol product of Comparative Example 12, which contains component (B) and has a mass ratio (A / B) of 1.2 to 100. This demonstrated that the effect of the present invention is unique to the use of component (A).

[0082] The pest and mite control spray products of Examples 14 to 18, which contain fenothrin as component (A) and MGK-264 as component (B) and have a mass ratio (A / B) of component (A) to component (B) of 1.2 to 100, were shown to have an excellent odor masking effect originating from component (A) and to have a pleasant odor.

[0083] In contrast, when fenothrin was used as the (A) component, the pest and mite control spray product of Comparative Example 13, which did not contain the (B) component, and the pest and mite control spray product of Comparative Example 14, which contained the (B) component but had a mass ratio (A / B) that did not satisfy the range of 1.2 to 100, were shown to be inferior in at least one of the odor masking effect and the pleasantness / unpleasantness of the odor.

[0084] From the above, it is reasonably presumed that, regardless of the application form, whether prepared as an aerosol product or a spray product, when component (A) is not only fenothrin or permethrin but also a phenoxybenzyl pyrethroid compound other than these, the pest and mite control composition has an excellent odor masking effect derived from component (A) and a pleasant odor, so long as the mass ratio (A / B) of component (A) to component (B) satisfies 1.2 to 100. When the pest and mite control composition is prepared as an aerosol product, the volume ratio (L / G) of the aerosol concentrate to the propellant does not affect the odor masking effect of component (B) on component (A). [Industrial Applicability]

[0085] The pest and mite control aerosol, aerosol products and spray products using the pest and mite control composition, pest and mite control method, and odor masking method of the present invention are capable of masking odors derived from phenoxybenzyl pyrethroid compounds, and therefore the phenoxybenzyl pyrethroid compounds can be used for the purpose of pest and mite control in a wide range of applications, including not only outdoor use but also indoor use where odors tend to linger.

Claims

1. A pest and mite control composition for controlling pests and mites, The following components (A) and (B): (A) Phenoxybenzyl pyrethroid compounds (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide Contains A pest and mite control composition, wherein the mass ratio (A / B) of the component (A) to the component (B) is 1.2 to 100.

2. 2. The pest and mite control composition according to claim 1, wherein the component (A) is fenothrin and / or permethrin.

3. 2. The pest and mite control composition according to claim 1, wherein the pest is a creeping pest.

4. 2. The pest and mite control composition according to claim 1, wherein the mite is a house dust mite.

5. 2. The pest and mite control composition according to claim 1, which is for indoor use.

6. An aerosol product using the pest and mite control composition according to any one of claims 1 to 5, The aerosol concentrate (L) containing the component (A) and the component (B) and a propellant (G), The aerosol product has a volume ratio (L / G) of the aerosol concentrate (L) to the propellant (G) set to 5 / 95 to 70 / 30.

7. The aerosol product according to claim 6, which is configured as a fixed-volume spray type with a spray volume per spray set to 0.1 to 3.0 mL.

8. A spray product using the pest and mite control composition according to any one of claims 1 to 5.

9. A method for controlling insects and mites, which comprises spraying the composition for controlling insects and mites according to any one of claims 1 to 5.

10. (A) An odor masking method for masking an odor derived from a phenoxybenzyl pyrethroid compound, comprising the steps of: A method for odor masking, comprising blending (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide with the (A) phenoxybenzyl pyrethroid compound such that the mass ratio (A / B) of the (A) phenoxybenzyl pyrethroid compound to the (B) N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboximide is 1.2 to 100.

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