JP7427009B2 - Metered dose aerosol for space treatment - Google Patents

Description

The present invention relates to a metered dose aerosol for space treatment, which includes a pressure container provided with a metered dose injection valve, an actuator provided with an injection port connected to the metered dose injection valve, and a dip tube.

Metered dose aerosols that can spray a certain amount of medicine in one spray include fixed dose aerosols for application that are applied locally to gaps, etc., fixed dose aerosols for direct impact that are sprayed directly onto objects, and fixed dose aerosols for spraying into spaces. It is classified as a fixed-dose aerosol for treating a space where the medicine spreads.

For example, there is an extremely useful metered-dose aerosol for space treatment (see Patent Document 1) that is effective against not only creeping pests and indoor dust mites, but also flying pests on the day of spraying. The present inventors have conducted various studies in order to improve the injection efficiency and effectiveness of the medicine, based on the recognition that a fixed-dose aerosol for space treatment is efficient in treating the entire room with a medicine easily. As a result, it was found that the dispersibility of the drug can be improved by spraying the drug diagonally upward with respect to a horizontal surface in the fixed-dose aerosol for spatial treatment.

Patent No. 5517122

(1) Horizontally or (2) Using an actuator with an actuator for diagonally upward spraying, in order to spray diagonally upward with respect to the horizontal plane, the injection axis of the nozzle must be There is a method of using an aerosol can in which the aerosol can is tilted diagonally with respect to a horizontal surface so that the can is directed diagonally upward.

However, with conventional products, injection defects may occur in such usage methods. In Patent Document 1, it is not recognized that spraying diagonally upward may cause a jetting failure, and no countermeasures are taken to address this problem.

The present invention has been made in view of the above-mentioned problems, and is capable of uniformly dispersing a chemical agent in a space treatment method to control pests, especially creeping pests and indoor dust mites, and prevents the occurrence of injection failure. The purpose of the present invention is to provide a fixed-dose aerosol for space treatment that can suppress the

The characteristic structure of the fixed-quantity injection aerosol for space treatment according to the present invention to solve the above problems is as follows:
a pressure-resistant container equipped with a metered injection valve that encloses an aerosol stock solution containing a pest control component and a propellant; an actuator equipped with a jet port connected to the metered injection valve; and the aerosol stock solution and the propellant. and a dip tube that supplies the metered amount injection valve to the metered amount injection valve,
The tip of the dip tube is located at a height of 6 mm or less from the bottom of the pressure container,
When the pressure-resistant container is placed on a horizontal surface, the injection axis of the injection port forms an elevation angle of 10 to 60° with respect to the horizontal surface.

The present inventor conducted various studies on the injection direction of a fixed-dose aerosol for space treatment, and found that when a drug is sprayed toward a horizontal plane, particularly diagonally upward at an angle of 30 to 60 degrees, the drug enters the treatment space. It was found that the diffusion becomes uniform and processing can be performed efficiently.
According to the metered-dose aerosol for space treatment of this configuration, when the tip of the dip tube of the metered-dose aerosol for space treatment is located at a height of 6 mm or less from the bottom of the pressure container, and the pressure container is placed on a horizontal surface. By making the injection axis of the injection nozzle at an elevation angle of 10 to 60 degrees with respect to the horizontal plane, the control component suitable for controlling pests can be applied so that the injection axis of the injection nozzle makes an elevation angle of 30 to 60 degrees with respect to the horizontal plane. When injecting, it is possible to suppress the occurrence of injection failures. In this case, even when the pressure container is tilted slightly with respect to the horizontal plane and sprayed, the tip of the dip tube is located at a height of 6 mm or less from the bottom of the pressure container, so that the aerosol stock solution and propellant can be sprayed in a fixed amount. Since the fuel is reliably supplied to the valve, the injection condition can be maintained in good condition.

In the quantitative injection aerosol for space treatment according to the present invention,
The pesticidal component preferably contains a non-volatile pesticidal component whose vapor pressure at 30° C. is less than 1×10 ⁻⁴ mmHg.

According to the space treatment fixed-dose aerosol of this configuration, creeping pests and indoor dust mites can be suitably controlled.

In the quantitative injection aerosol for space treatment according to the present invention,
The pesticidal component preferably contains a volatile pesticidal component having a vapor pressure of 2×10 ⁻⁴ to 1×10 ⁻² mmHg at 30° C.

According to the space treatment fixed-dose aerosol of this configuration, flying pests can be suitably controlled, and in addition, crawling pests and indoor dust mites can also be controlled.

In the quantitative injection aerosol for space treatment according to the present invention,
The pesticidal components include a nonvolatile pesticidal component whose vapor pressure at 30°C is less than 1×10 ⁻⁴ mmHg, and a volatile pesticidal component whose vapor pressure at 30°C is 2×10 ⁻⁴ to 1×10 ⁻² mmHg. It is preferable to contain the following components.

According to the space treatment fixed-dose aerosol of this configuration, flying pests, crawling pests, and indoor dust mites can be controlled at the same time.

In the quantitative injection aerosol for space treatment according to the present invention,
Preferably, the injection axis of the injection port forms an elevation angle of 15 to 50° with respect to the horizontal plane.

According to the fixed quantity injection aerosol for space treatment of this configuration, the injection axis of the nozzle of the fixed quantity injection aerosol for space treatment forms an elevation angle of 15 to 50 degrees with respect to the horizontal plane, so that the injection of the nozzle with respect to the horizontal plane When injecting so that the axis is at 30 to 60°, the angle at which the pressure-resistant container is tilted is suppressed, so occurrence of injection failures is suppressed and a stable injection state can be maintained.

In the quantitative injection aerosol for space treatment according to the present invention,
Preferably, the tip of the dip tube is located at a height of 3 mm or less from the bottom of the pressure container.

According to the metered-dose aerosol for space treatment with this configuration, the tip of the dip tube is located at a height of 3 mm or less from the bottom of the pressure-resistant container, so that when the pressure-resistant container is slightly tilted with respect to the horizontal plane and is injected. However, the aerosol stock solution and propellant are reliably supplied to the metered injection valve, and the occurrence of injection failures can be suppressed.

In the quantitative injection aerosol for space treatment according to the present invention,
Preferably, the injection force at an injection distance of 5 cm is set to 5 to 50 gf.

According to the fixed quantity injection aerosol for space treatment of this configuration, the injection force at the injection distance of 5 cm is set to 5 to 50 gf, so that the injected aerosol stock solution can be applied to exposed surfaces within the processing space (e.g. (floors, walls, surfaces of structures such as furniture, etc.), and in particular settles and adheres uniformly to the entire floor surface, and provides practically sufficient control against flying pests, creeping pests, and indoor dust mites. It can be effective.

In the quantitative injection aerosol for space treatment according to the present invention,
Preferably, the dip tube is configured to be bendable inside the pressure container.

According to the fixed-dose aerosol for space treatment of this configuration, the dip tube is configured to be bendable inside the pressure container, so by appropriately curving the dip tube, the tip can be positioned at an appropriate position inside the pressure container. can be easily placed in the

FIG. 1 is a sectional view of a metered-dose aerosol for space treatment according to the present invention. FIG. 2 is an explanatory diagram showing (a) the elevation angle of the injection port (injection axis) and (b) the injection direction in a fixed-quantity injection aerosol for space treatment. FIG. 3 is an enlarged sectional view of the tip of the dip tube of the fixed-dose aerosol for space treatment.

Hereinafter, the quantitative injection aerosol for space treatment of the present invention will be explained. However, the present invention is not intended to be limited to the configurations and examples described in the embodiments described below.

FIG. 1 is a sectional view of a metered-dose aerosol 100 for space treatment according to the present invention. The metered-dose aerosol 100 for space treatment includes a pressure-resistant container 10 provided with a metered-dose injection valve 12 that encloses an aerosol stock solution containing a pesticidal component and a propellant, and an injection port 21 that is connected to the metered-dose injection valve 12. and a dip tube 30 that supplies the aerosol stock solution and propellant to the metered injection valve 12, and by space treatment, flying pests such as mosquitoes and flies, crawling pests such as cockroaches, indoor dust mites, etc. Used to control pests.

[Pressure container]
The pressure container 10 includes a storage section 11 in which an aerosol stock solution and a propellant are stored, and a metered injection valve 12 assembled at the mouth of the storage section 11. The reservoir 11 has a cylindrical shape with a bottom or a substantially cylindrical shape with a bottom, and is made of resin such as polyethylene terephthalate, or metal such as aluminum or tinplate. The appearance of the storage section 11 may be transparent, translucent, or opaque. The shape of the bottom part may be any shape as long as it is erect, and examples include a flat shape, a concave shape, and a shape like five petals. It is preferable that a display is provided on the outer surface of the storage portion 11 to make the user aware that the opposite side of the curved dip tube 30 and the direction in which the tip 30a is directed is the front side. For example, an indication indicating the front direction F is printed on the outer surface of the storage part 11 at the position P, so that when the dip tube 30 is curved, the opposite side to the direction in which the tip 30a faces is the front side. It is possible to make people aware of this. The display indicating the front direction F can be, for example, a letter or a design, but if the display is a design that matches the pattern etc. printed on the actuator 20 when the injection port 21 is directed toward the front direction F, The user can be made aware of the front direction F without impairing the design. Here, the front direction F is a direction in which the injection port 21 is preferably directed during use, and is a direction opposite to the bending direction of the dip tube 30, which will be described later. By orienting the injection port 21 in the front direction F indicated by the display P, the pressure-resistant container 10 can be tilted slightly diagonally upward with respect to the horizontal plane H even when there are few inclusions in the later stages of use of the space treatment metered injection aerosol 100. As a result, the aerosol stock solution and propellant accumulate near the tip 30a of the dip tube 30. As a result, when injecting the space treatment fixed-dose aerosol 100, the dip tube 30 can better suck up the aerosol stock solution and propellant, and the occurrence of injection failures can be suppressed. Here, "injection failure" means a state in which the amount actually injected by one operation of the actuator 20 is less than 85% of the injection amount of the metered injection valve 12. When the reservoir 11 is made of transparent or translucent resin, it is preferable that the reservoir 11 is further printed with a horizontal display such as a border pattern. The horizontal display is provided in order to prevent excessive tilting that would cause an injection failure when injecting the space treatment metered injection aerosol 100. When there is such a horizontal display, the user psychologically tries to align the liquid level of the aerosol stock solution inside the reservoir 11 with the horizontal display, so the user uses the space treatment metered quantity injection aerosol 100 in an appropriate posture. be able to.

The metered injection valve 12 is attached to the mouth of the reservoir 11 , connected to the actuator 20 on the outside of the pressure vessel 10 , and connected to the dip tube 30 on the inside of the pressure vessel 10 . The metered injection valve 12 has a valve mechanism (not shown), and is normally set so that the injection volume per injection is 0.2 to 5.0 mL.

[Actuator]
The actuator 20 is an operating unit for injecting the aerosol stock solution, and the actuator 20 is provided with an injection port 21 connected to the metered injection valve 12 and through which the aerosol stock solution is ejected from the pressure container 10 to the outside. Here, the angle of the injection port 21 will be explained. FIG. 2 is an explanatory diagram showing (a) the elevation angle of the injection port (injection axis) and (b) the injection direction in the fixed-quantity injection aerosol 100 for space treatment. In the present invention, the angle of the injection axis O of the injection port with respect to the horizontal surface H when the pressure-resistant container 10 is placed on the horizontal surface H is defined as the elevation angle D (FIG. 2(a)), and the metered-injection aerosol 100 for space treatment is actually The angle of the injection axis O of the injection port with respect to the horizontal plane H when the aerosol stock solution is injected into the space is defined as the injection direction angle E (FIG. 2(b)). Therefore, the elevation angle D is basically a unique angle of the fixed quantity injection aerosol 100 for spatial treatment, and the injection direction angle E is an angle that varies depending on the injection posture. In the present invention, when the pressure container 10 is placed on the horizontal surface H, the elevation angle D of the injection axis O of the injection port 21 with respect to the horizontal surface H is set to 10 to 60 degrees, and is set to 15 to 50 degrees. It is preferable. If the elevation angle D is 10 to 60 degrees, the aerosol stock solution can be easily injected diagonally upward at around 30 to 60 degrees (that is, with the injection direction angle E set at 30 to 60 degrees). If the elevation angle D is less than 10°, it is necessary to tilt the pressure container 10 excessively in order to inject the aerosol stock solution obliquely upward at around 30 to 60 degrees with respect to the horizontal plane H. If the injection is performed at an excessive angle, there is a risk that an injection failure will occur. If the elevation angle D exceeds 60°, there is a risk that the injected aerosol stock solution may adhere to the fingers or the like operating the actuator 20. In addition, in FIG. 2, (a) the fixed quantity injection aerosol 100 for spatial treatment whose elevation angle D is set to 60 degrees, and (b) the fixed quantity injection aerosol 100 for spatial treatment which is tilted downward by 15 degrees and the injection direction angle E is set to 45 degrees. The example shows a state where

The number, shape, and size of the injection ports 21 are not particularly limited. The number of injection ports 21 may be one or two or more, but from the viewpoint of simple and low cost manufacturing, the number of injection ports 21 is preferably one. preferable. In addition, for a nozzle or actuator having two injection ports, the perpendicular bisector of the line segment connecting the centers of each injection port 21 is the injection axis O, and for a nozzle or actuator having three or more injection ports, The injection axis O of the injection port 21 is determined as follows. For a nozzle or an actuator in which the injection port 21 is located at the center of the injection section, an orthogonal line passing through the center of the injection port 21 at the center is defined as the injection axis O. For a nozzle or an actuator that does not have an injection port 21 at the center of the injection section, the injection axis O is an orthogonal line that passes through the center of a circumscribed circle of a polygon connecting the centers of each injection port 21.

The shape (cross-sectional shape) of the injection port 21 may be a circle, an ellipse, a polygon, or any other irregular shape. The opening area of the injection port 21 is preferably 0.05 to 8.0 mm ² , more preferably 0.1 to 4.0 mm ² , and even more preferably 0.2 to 3.0 mm ² preferable. For example, when the number of injection ports 21 is one and the shape of the injection port 21 is circular, the size of the injection port 21 (nozzle diameter) is preferably 0.3 mm or more, and preferably 0.4 mm or more. It is more preferable that the diameter is 0.6 mm or more. Further, the nozzle diameter is preferably 3.0 mm or less, more preferably 2.0 mm or less, and even more preferably 1.8 mm or less.

The actuator 20 may have a nozzle or may not have a nozzle. If it has a nozzle, it may have a protruding nozzle or a non-protruding nozzle, but a protruding nozzle is preferred. In the case of an actuator with a nozzle, the length of the nozzle is not particularly limited, but is preferably 2.0 to 80 mm, more preferably 3.0 to 70 mm, and particularly preferably 4.0 to 60 mm. The operation button on the actuator 20 can be a push-down type or a trigger type button.

[Dip tube]
The dip tube 30 is a hollow member made of resin such as polyethylene or polypropylene that is attached to the metering injection valve 12, and when the metering injection valve 12 is operated, the dip tube 30 is a hollow member made of resin such as polyethylene or polypropylene. is supplied to the injection valve 12. The dip tube 30 itself has a straight shape, but when it is attached to the metered injection valve 12 and inserted into the pressure vessel 10, it becomes curved. Therefore, by appropriately curving the dip tube, its tip 30a can be easily placed at an appropriate position within the pressure vessel 10. The tip 30a of the dip tube 30 is attached to the metered injection valve 12 so that the height h from the bottom B of the pressure vessel 10 is 6 mm or less, preferably 3 mm or less. Here, the lowermost part B of the pressure vessel 10 is a portion of the inner surface of the pressure vessel 10 that is closest to the horizontal plane H when the pressure vessel 10 is placed on the horizontal plane H. Even when the bottom surface of the pressure-resistant container 10 is dome-shaped as shown in FIG. I will do it. Therefore, by positioning the tip 30a of the dip tube 30 at a position of 6 mm or less from the bottom B of the pressure vessel 10, even when the pressure vessel 10 is tilted slightly with respect to the horizontal plane H and sprayed, the tip 30a is located within the range of the aerosol stock solution. The aerosol stock solution and the propellant can be reliably supplied to the metered injection valve 12 because the aerosol stock solution and the propellant are located below the liquid level of the propellant. As a result, it is possible to suppress the occurrence of injection defects in the later stages of use of the space treatment metered injection aerosol 100. If the height h of the tip 30a from the bottom B of the pressure container 10 exceeds 6 mm, when the pressure container 10 is tilted slightly diagonally with respect to the horizontal plane H during injection, the tip will be lower than the liquid level of the aerosol stock solution and propellant. 30a is likely to be at a high position, and as a result, there is a possibility that an injection failure may occur. The dip tube 30 has a linear shape that extends vertically downward with one end attached to the quantitative injection valve 12, and extends vertically downward with one end attached to the quantitative injection valve 12, and curves at the curved portion 30b. It is preferable to have a curved shape or a curved shape as a whole. Among these, it is more preferable to have a curved shape at the curved portion 30b or a shape that is curved as a whole so that the tip 30a is located near the inner surface S of the pressure container 10. When the dip tube 30 has a curved shape at the curved portion 30b or a curved shape as a whole, and the tip 30a is located near the inner surface S of the pressure container 10, from the inner surface S of the pressure container 10 to the tip 30a The distance d is set to be 25 mm or less, preferably 15 mm or less, more preferably 6 mm or less, and even more preferably 3 mm or less. Since the distance d from the inner surface S to the tip 30a is 25 mm or less, even when the pressure-resistant container 10 is tilted to the horizontal surface H and sprayed, the aerosol concentrate and propellant near the inner surface S can be reliably removed. It is possible to further suppress the occurrence of injection failures. The tip 30a of the dip tube 30 can be processed into various shapes. FIG. 3 is an enlarged sectional view of the tip of the dip tube of the fixed-dose aerosol for space treatment, showing (a) an oblique end cut diagonally, and (b) a U end cut into a U-shape (concave shape). , (c) A circular arc end cut into an arc shape (convex shape), and (d) A right angle end cut at a right angle. Among these, (a) an oblique end cut diagonally, (b) a U end cut into a U-shape, or (c) an arcuate end cut into an arc shape are preferable. When the tip 30a has these shapes, the aerosol stock solution and the propellant can be better sucked up, and the occurrence of injection defects can be further suppressed.

<Aerosol stock solution>
The aerosol stock solution contains (A) a compound with a vapor pressure of less than 1 x 10 ^-4 mmHg at 30°C (hardly volatile pesticidal ingredient), and (B) vapor at 30°C, as one of its main ingredients. A compound containing a pressure of 2×10 ⁻⁴ to 1×10 ⁻² mmHg (volatile control component) or a mixture of (A) and (B) can be used. Hereinafter, the aerosol stock solution A containing the hardly volatile pest control component and the aerosol stock solution B containing the volatile pest control component will be described.

[Aerosol stock solution A]
The non-volatile pest control component, which is one of the main components of the aerosol stock solution A, is a compound for controlling creeping pests such as cockroaches, bed bugs, ants, etc., and/or a compound mainly for controlling indoor dust. A mite control compound can be used to control mites. Compounds for controlling creeping pests include, for example, pyrethroid compounds such as phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and imiprothrin, silicon compounds such as silafluofen, and dichlorvos. and organic phosphorus compounds such as fenitrothion, carbamate compounds such as propoxur, neonicotinoid compounds such as dinotefuran, imidacloprid, and clothianidin, fipronil, and indoxacarb. Among these, phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and dinotefuran are preferred. In addition, when optical isomers and geometric isomers based on asymmetric carbon exist in the acid component and alcohol moiety of the pyrethroid compound, each of them and any mixture thereof are also included in the compound for controlling creeping pests. Examples of compounds for controlling mites include amidoflumeto, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, and p-menthane-3. , 8-diol, 3-iodo-2-propynylbutyl carbamate, phenothrin, and DEET. Among these, amidoflumeth, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, phenothrin, and DEET. is preferred. When the fixed amount spray aerosol 100 for space treatment of the present invention is sprayed in a certain amount in an indoor treatment space, the spray particles mainly settle on the floor surface as adhesive particles, but by containing a hardly volatile pesticidal component, It shows excellent control effects especially against creeping pests and indoor dust mites in spaces. Furthermore, by including the hardly volatile pest control component, volatilization of the hardly volatile pest control component from the adherent particles settled on the floor surface into the air is suppressed. Due to this mechanism of action, the space treatment metered dose aerosol 100 of the present invention is highly safe and can be used even in situations where people are present.

The content of the control component in the aerosol stock solution A is 1 to 90 w/v%, preferably 5 to 80 w/v%, and more preferably 30 to 75 w/v%. If the content of the pesticidal component in the aerosol stock solution A is within the above range, the pesticidal component will be easily dissolved in the organic solvent, and when the aerosol is sprayed, sprayed particles will be formed in an optimal state.

Aerosol stock solution A contains an organic solvent in addition to the above-mentioned pesticidal components. The organic solvent used is one that can dissolve the above-mentioned control components to prepare the aerosol stock solution A, and that can form optimal spray particles when the prepared aerosol stock solution A is sprayed. In the space treatment metered injection aerosol 100 of the present invention, examples of organic solvents include lower alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol (IPA), and hydrocarbon solvents such as normal paraffin and isoparaffin. Examples include higher fatty acid esters having 16 to 20 carbon atoms such as isopropyl myristate (IPM) and hexyl laurate, glycol ether solvents having 3 to 10 carbon atoms, and ketone solvents. Among these, lower alcohols having 2 to 3 carbon atoms, hydrocarbon solvents, and higher fatty acid esters having 16 to 20 carbon atoms are preferred. In particular, lower alcohols with 2 to 3 carbon atoms are important for improving the uniformity of spray particle diffusion, exposed surfaces within the processing space (e.g. floors, walls, surfaces of structures such as furniture, etc. existing within the processing space), In particular, it is more preferable because it does not easily cause stickiness on the floor surface. It is also possible to use a mixture of two or more of the above organic solvents. Further, as the organic solvent, it is also possible to further mix glycol ethers, hydrocarbon solvents such as normal paraffin and isoparaffin, and ketone solvents.

The specific gravity of the aerosol stock solution A is preferably 0.85 to 1.15, more preferably 0.89 to 1.10. If the specific gravity of the aerosol stock solution A is in the range of 0.85 to 1.15, when a fixed amount of the fixed-dose aerosol 100 for space treatment of the present invention is injected in an indoor treatment space, the spray particles will mainly form adhesive particles on the floor. Since it settles and adheres to surfaces, an appropriate pest control effect can be obtained. In addition, if the specific gravity of the aerosol stock solution A is within the above range, the adhesive particles will enter into gaps and shadows in the process of settling, so when a pyrethroid compound is used as a control ingredient, cockroaches etc. You can also expect a flashing effect that pops out from the shadows.

In addition to the above ingredients, the aerosol stock solution A contains an antifungal agent for molds and fungi, an antibacterial disinfectant, an aromatic agent, a deodorizing agent, a stabilizer, an antistatic agent, an antifoaming agent, and an excipient. Excipients and the like can also be added as appropriate. As antifungal agents, antibacterial agents, and bactericidal agents, hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforin, 3- Examples include methyl-4-isopropylphenol and ortho-phenylphenol. In addition, aromatic agents 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, Examples include aromatic ingredients such as phenylethyl alcohol, amyl cinnamic aldehyde, cumin aldehyde, and benzyl acetate, and fragrance ingredients containing green leaf alcohol and green leaf aldehyde, which are called "green scents."

[Aerosol stock solution B]
Volatile pest control components, which are one of the main components of aerosol concentrate B, include flying pests such as mosquitoes and flies, creeping pests such as cockroaches, bed bugs, and ants, and indoor dust mites. Pest control compounds can be used to control. Examples of the pest control compound include metofluthrin, profluthrin, transfluthrin, empenthrin, terrarethrin, and flamethrin. Among these, metofluthrin, profluthrin, and transfluthrin are preferred in consideration of vapor pressure, stability, basic insecticidal efficacy, etc. If optical isomers or geometric isomers based on asymmetric carbon exist in the acid component or alcohol moiety of these compounds, each of them or any mixture thereof is also included in the volatile pesticidal component. When the metered-injection aerosol 100 for space treatment of the present invention is injected in a fixed amount in an indoor treatment space, the spray particles containing volatile pesticidal components mainly form adhesive particles on exposed surfaces in the treatment space (e.g., inside the treatment space). Excellent control effect against flying pests, creeping pests, and indoor dust mites that settle and adhere to floors (floors, walls, surfaces of structures such as furniture, etc.), especially in the treatment space. shows.

The content of the control component in the aerosol stock solution B is 1 to 90 w/v%, preferably 5 to 80 w/v%, and more preferably 8 to 75 w/v%. If the content of the pesticidal component in the aerosol stock solution B is within the above range, the pesticidal component will be easily dissolved in the organic solvent, and when the aerosol is sprayed, sprayed particles will be formed in an optimal state.

Aerosol stock solution B contains an organic solvent in addition to the above-mentioned pesticidal components. The organic solvent used is one that can dissolve the above-mentioned control components to prepare the aerosol stock solution B, and that can form optimal spray particles when the prepared aerosol stock solution B is sprayed. The organic solvent that can be used in the aerosol stock solution B is the same as the organic solvent that can be used in the aerosol stock solution A described above.

The specific gravity of the aerosol stock solution B is preferably 0.78 to 1.15, more preferably 0.82 to 1.10. If the specific gravity of the aerosol stock solution B is in the range of 0.78 to 1.15, when a fixed amount of the metered injection aerosol 100 for space treatment of the present invention is injected in an indoor treatment space, the spray particles are mainly exposed as adhesive particles. Appropriate pest control effects can be obtained because it adheres uniformly to surfaces.

In addition to the above ingredients, aerosol stock solution B contains antifungal agents targeting molds and fungi, antibacterial disinfectants, fragrances, deodorants, stabilizers, antistatic agents, antifoaming agents, and excipients. Excipients and the like can also be added as appropriate. These additional ingredients are the same as those added to Aerosol Stock Solution A described above.

[Mixture of aerosol stock solution A and aerosol stock solution B]
When a mixture of the above aerosol stock solution A and aerosol stock solution B is used as the aerosol stock solution (A + B), it is possible to effectively control all flying pests, crawling pests, and indoor dust mites, making it possible to control a wider range of insects. It can be used for various purposes. That is, when a fixed amount of the metered injection aerosol 100 for space treatment of the present invention is injected into an indoor treatment space, the spray particles containing volatile control components derived from the aerosol stock solution B are mainly exposed as adherent particles in the treatment space. (e.g. floors, walls, surfaces of structures such as furniture, etc. existing in the treatment space), especially the floor surface, and settles and adheres to the surface, and in the treatment space, flying pests, crawling pests, and indoor dust mites Shows excellent control effect against. Here, a certain amount of the spray particles remain suspended in the air, but by including a volatile control component derived from the aerosol stock solution B as a control component, it is possible to exert a control effect even against flying pests. In addition, if the volatile pest control component derived from the aerosol stock solution B adheres to some floors or walls together with the non-volatile pest control component derived from the aerosol stock solution A, the control effect against creeping pests and/or indoor dust mites may be reduced. can be enhanced synergistically.

<Propellant>
Propellants used in the metered injection aerosol 100 for space treatment of the present invention include liquefied gases such as liquefied petroleum gas (LPG), dimethyl ether (DME), and hydrofluoroolefins, as well as nitrogen gas, carbon dioxide gas, nitrous oxide, and Examples include compressed gas such as compressed air. The above propellants can be used alone or in a mixed state, but those containing LPG as a main component are easier to use.

In the space treatment metered injection aerosol 100 of the present invention, the volume ratio (a/b) of the aerosol stock solution (a) and the propellant (b) filled in the pressure container 10 is 10/90 to 50/ It is preferable to adjust it to 50. If the capacity ratio (a/b) is within the above range, a sufficient amount of the pesticidal component can be uniformly diffused over the entire exposed surface, especially the entire floor surface.

The fixed-dose aerosol for space treatment 100 of the present invention preferably has an injection force of 5 to 50 gf at a distance of 5 cm from the injection port 21. If the spraying force is within the above range, the sprayed aerosol stock solution will be able to cover exposed surfaces within the processing space (e.g. floors, walls, surfaces of structures such as furniture, etc. existing within the processing space), especially the entire floor surface. It uniformly settles and adheres to the surface of the air, and has a practically sufficient control effect against flying pests, crawling pests, and mites. When the jetting force is less than 5 gf, the jetting force tends to be insufficient, resulting in insufficient diffusion over the entire exposed surface. When the jetting force exceeds 50 gf, there is a possibility that good dispersibility of the jetted aerosol stock solution cannot be obtained. Such injection force can be adjusted as appropriate depending on the composition of the aerosol stock solution, the internal pressure of the pressure container 10, the shape of the injection port 21, etc.

<Pests to be controlled>
The fixed-dose aerosol 100 for space treatment of the present invention is suitable for use against flying pests such as mosquitoes such as Culex mosquito, Aedes albopictus, Aedes aegypti, and Aedes aegypti; and cockroaches such as American cockroaches, black cockroaches, and German cockroaches; bedbugs such as bedbugs (bedbugs), and Japanese bedbugs (Anetite bodybugs); stink bugs such as the Japanese stink bug; In addition to crawling pests such as ants, spiders such as reed spiders, spotted brown spiders, and redback spiders, centipedes such as millipedes and red-backed spiders, pill bugs, woodlouses, termites such as house termites and Japanese termites, and woolly bugs, burrs, Controls various pests such as burrs such as carp moth, clothing pests such as cutworms such as cutlet beetles and cutlet weevils, grain storage pests such as grain weevils, and indoor dust mites such as leaf mites, house dust mites, dust mites, black dust mites, and yellow house dust mites. can be used for. In particular, cockroaches such as the American cockroach, black cockroach, and German cockroach; bedbugs such as the Japanese bedbug (bed bug) and the Formosan bedbug (Anetite bedbug); ants such as the black wood ant, reticulated ant, brown ant, house ant, red fire ant, and fire ant; It is effective in controlling creeping pests such as spiders such as redback spiders, and indoor dust mites such as white mites, leopard dust mites, dust mites, claw mites, and black dust mites.In particular, it is effective against German cockroaches, American cockroaches, black cockroaches, and bedbugs (bed bugs). , has an excellent pest control effect.

<Processing target>
The treatment target of the space treatment metered injection aerosol 100 of the present invention is mainly indoor spaces. The volume of the processing space is not particularly limited, but the volume equivalent to a 4.5-16 tatami room is 18.8-66.6 m ³ (area 7.5-26.6 m ² , height 2.2-3 tatami). 0 m), and the volume equivalent to a 4.5-8 tatami room is 18.8-33.3 m ³ (area 7.5-13.3 m ² , height 2.2-3.0 m). It is more preferable that However, even in larger indoor spaces and smaller indoor spaces, the amount of pest control components released into the air of the indoor space may range from 0.1 to 50 mg/ ^m3 , depending on the volume of the indoor space. By appropriately setting the number of injections, injection volume, etc., the same pest control effect can be obtained regardless of the volume of the indoor space. The frequency of use of the fixed-dose aerosol for space treatment of the present invention may be such that it is applied at an appropriate time depending on the frequency and situation of occurrence of pests so that the amount of the control component released falls within the above range.

Based on Examples 1 to 49 and Comparative Examples 1 to 7, the quantitative injection aerosol for space treatment of the present invention was examined in more detail. In order to confirm the effect of the fixed-dose aerosol for space treatment of the present invention, fixed-dose aerosol for space treatment (Examples 1 to 49) having the characteristic configuration of the present invention was prepared and an injection test was conducted. In addition, for comparison, metered-dose aerosols for space treatment (Comparative Examples 1 to 7) that do not have the characteristic features of the present invention were prepared, and similar effectiveness confirmation tests were conducted.

[Example 1]
Aerosol stock solution A was prepared by dissolving phenothrin (40 w/v%) as a hardly volatile pesticidal component in ethanol. 3.5 mL of this aerosol stock solution A and 5.3 mL of liquefied petroleum gas as a propellant were pressurized and filled into a pressure-resistant container with an injection volume of 0.4 mL and equipped with a quantitative spray valve. Theoretically, this filling amount allows for a maximum of 22 fixed injections. An actuator having an injection port such that the injection axis forms an elevation angle (D) of 60° with respect to the horizontal plane when the pressure vessel is placed on a horizontal plane is attached to the metered spray valve of the pressure vessel, and the A metered dose aerosol for space treatment was obtained. In the fixed-dose aerosol for space treatment of Example 1, a dip tube with a U-shaped tip was used, and the height (h) of the tip from the bottom of the pressure container was 1 mm in the pressure container. It was attached to the metered injection valve so that The fixed-dose aerosol for space treatment of Example 1 had an injection force of 15 gf at an injection distance of 5 cm.

[Examples 2 to 24, Comparative Examples 1 to 5]
According to Example 1, various spatial treatment metered dose aerosols of Examples 2 to 24 and Comparative Examples 1 to 5 were produced with the configurations shown in Table 1. In the quantitative injection aerosols for space treatment of Examples 16, 17, 21, 22, 23, and 24, even when using a quantitative spray valve with an injection volume of 0.2 mL or 1.0 mL, theoretically, the quantitative injection can be performed. The amount filled into the pressure container was adjusted so that it could be performed up to 22 times.

<Injection test (injection angle 45°)>
The quantitative injection aerosols for space treatment of Examples 1 to 24 and Comparative Examples 1 to 5 were fixed so that the injection axis of the injection port formed an injection angle of 45° with respect to a horizontal plane, and injection was repeated. Before starting to count the number of injections, blank firing was performed twice, and thereafter, the number of injections until normal injection was no longer possible was counted. In this example, "inability to inject normally" is synonymous with the above-mentioned "injection failure", and the actual injected capacity due to actuator operation is less than 85% of the injection capacity of the metered injection valve. It means that. The same applies to subsequent examples. The test was repeated four times for each quantitative injection aerosol for space treatment, and the effect of suppressing injection defects was evaluated according to the following evaluation criteria according to the average value of the number of injections.
(Evaluation criteria)
A: 18 or more times B: 16 or 17 times C: 14 or 15 times D: Less than 14 times

Furthermore, if a jetting failure occurred once or more out of the four tests and up to the second count start, it was determined that there was a jetting failure at the initial stage of use. The test results are shown in Table 1.

As a result of the test, when spraying the medicine diagonally upward at 45 degrees with respect to the horizontal plane, the number of injections for the space treatment fixed-dose aerosols of Examples 1 to 24 was 14 or more times before it could no longer be sprayed properly. This suppressed the occurrence of injection defects in the later stages of use. Among these, actuators are equipped with an injection port so that when the pressure container is placed on a horizontal surface, the injection axis forms an elevation angle of 15 degrees or more with respect to the horizontal surface, and the tip is U-shaped or cut diagonally. The quantitative injection aerosols for space treatment of Examples 1 to 6, 8 to 19, and 21 to 24 using dip tubes were particularly effective in suppressing injection failures in the later stages of use. Further, in the metered quantity injection aerosols for space treatment of Examples 1 to 24, no injection failure occurred at the initial stage of use.

On the other hand, the fixed-dose aerosols for space treatment of Comparative Examples 1 to 5 were all injected 13 times or less before they could no longer be injected properly, and the occurrence of injection failures in the later stages of use was not sufficiently suppressed. . Further, in the fixed-dose aerosols for space treatment of Comparative Examples 1 to 3 and 5, injection failures occurred at the initial stage of use.

[Examples 25 to 32, Comparative Examples 6 and 7]
According to Example 1, various space treatment metered dose aerosols of Examples 25 to 32 and Comparative Examples 6 and 7 were produced with the configurations shown in Table 2.

<Injection test (injection angle 30°)>
The quantitative injection aerosols for space treatment of Examples 25 to 32 and Comparative Examples 6 and 7 were fixed so that the injection axis of the injection port formed an injection angle of 30° with respect to a horizontal plane, and injection was repeated. Before starting to count the number of injections, blank firing was performed twice, and thereafter, the number of injections until normal injection was no longer possible was counted. The test was repeated four times for each quantitative injection aerosol for space treatment, and the effect of suppressing injection defects was evaluated according to the following evaluation criteria according to the average value of the number of injections.
(Evaluation criteria)
A: 18 or more times B: 16 or 17 times C: 14 or 15 times D: Less than 14 times

Furthermore, if a jetting failure occurred once or more out of the four tests and up to the second count start, it was determined that there was a jetting failure at the initial stage of use. The test results are shown in Table 2.

As a result of the test, when spraying the medicine diagonally upward at 30 degrees with respect to a horizontal plane, the number of injections for the space treatment metered-dose aerosols of Examples 25 to 32 was 15 or more times before it could no longer be sprayed properly. This suppressed the occurrence of injection defects in the later stages of use. Among them, the quantitative injection aerosols for space treatment according to Examples 26 to 32 are equipped with an actuator having an injection port so that the injection axis makes an elevation angle of 50° or less with respect to the horizontal surface when the pressure-resistant container is placed on the horizontal surface. was particularly effective in suppressing injection defects in the later stages of use. In addition, in the fixed quantity injection aerosols for space treatment of Examples 25 to 32, no injection failure occurred at the initial stage of use.

On the other hand, in the case of the fixed quantity injection aerosol for space treatment of Comparative Examples 6 and 7, the number of injections until the injection could not be performed normally was 14 times or less, and the effect of suppressing injection failure in the late stage of use was lower than that of Examples 25 to 32. It was inferior to the metered-dose aerosol for space treatment. Further, in the fixed-dose aerosols for space treatment of Comparative Examples 6 and 7, injection failures occurred at the initial stage of use.

[Example 33]
2.7 mL of aerosol stock solution A and 6.1 mL of liquefied petroleum gas as a propellant were filled under pressure into a pressure-resistant container. In other respects, the same procedure as for the metered dose aerosol for space treatment of Example 1 was followed to obtain the metered dose aerosol for space treatment of Example 33.

[Examples 34 to 38]
According to Example 33, metered-dose aerosols for various spatial treatments of Examples 34 to 38 were produced with the configurations shown in Table 3.

<Injection test (injection angle 60°)>
The fixed quantity injection aerosols for spatial treatment of Examples 33 to 38 were fixed so that the injection axis of the injection port formed an injection angle of 60° with respect to a horizontal plane, and injection was repeated. Before starting to count the number of injections, blank firing was performed twice, and thereafter, the number of injections until normal injection was no longer possible was counted. The test was repeated four times for each quantitative injection aerosol for space treatment, and the effect of suppressing injection defects was evaluated according to the following evaluation criteria according to the average value of the number of injections.
(Evaluation criteria)
A: 18 or more times B: 16 or 17 times C: 14 or 15 times D: Less than 14 times

Furthermore, if a jetting failure occurred once or more out of the four tests and up to the second count start, it was determined that there was a jetting failure at the initial stage of use. The test results are shown in Table 3.

As a result of the test, when the medicine was sprayed diagonally upward at 60 degrees with respect to the horizontal plane, the number of injections for the space treatment metered injection aerosols of Examples 33 to 38 was 15 or more times before it could no longer be sprayed properly. This suppressed the occurrence of injection defects in the later stages of use. Among them, examples 34 to 36 of quantitative injection for space treatment are equipped with an actuator having an injection port so that the injection axis forms an elevation angle of 40 to 50 degrees with respect to the horizontal surface when the pressure container is placed on the horizontal surface. The aerosol was particularly effective in suppressing injection defects in the later stages of use. In addition, in the fixed quantity injection aerosols for space treatment of Examples 33 to 38, no injection failure occurred at the initial stage of use.

[Example 39, 40]
According to Example 1, metered amount injection aerosols for various space treatments of Examples 39 and 40 were produced with the configurations shown in Table 4. In the quantitative injection aerosols for space treatment of Examples 39 and 40, even when using a quantitative spray valve with an injection capacity of 0.2 mL or 2.0 mL, it is theoretically possible to perform quantitative injection up to 22 times. The amount filled into the pressure container was adjusted so that

<Diffusion uniformity test>
Glass plates measuring 20×20 cm were installed at 6 to 8 locations on the floor of a closed room with a volume of 25 m ³ (area 10 m ² , height 2.5 m). The fixed-dose aerosols for space treatment of Examples 13 to 17, 39, and 40 were placed in the center of the room at a height of 1.5 m so that the injection axis of the injection port made an injection angle of 45° with respect to the horizontal plane. The sample was held and a fixed amount was sprayed. One hour after the spraying treatment, all the glass plates were taken out, and the pesticidal components adhering to each glass plate were washed out with acetone and analyzed by gas chromatography. Regarding the pesticidal components attached to the glass plates, we analyzed the variation between each glass plate and evaluated the uniformity of diffusion of spray particles. The results are shown in three grades, A, B, and C, in descending order of diffusion uniformity. Moreover, the above-mentioned "injection test (injection angle 45°)" was carried out for the space treatment fixed-dose aerosols of Examples 39 and 40. Table 4 shows the test results of the spray test (spray angle 45°) and the diffusion uniformity test.

As a result of the test, when the drug was sprayed obliquely upward at 45 degrees with respect to the horizontal plane, the metered dose aerosols for space treatment of Examples 39 and 40 had the same effect as the metered dose aerosols for space treatment of Examples 13 to 17. The occurrence of injection failures both in the early and late stages of use was suppressed. However, the fixed quantity injection aerosols for spatial treatment of Examples 39 and 40 were inferior to the fixed quantity injection aerosols for spatial treatment of Examples 13 to 17 in terms of diffusion uniformity. From this, in order to improve the diffusion uniformity, it is considered preferable that the injection force at the injection distance of 5 cm is in the range of 5 to 50 gf, as in the quantitative injection aerosols for spatial treatment of Examples 13 to 17.

[Example 41]
The control components of the aerosol stock solution A in the fixed-dose aerosol for space treatment in Example 1 were changed to phenothrin (53 w/v%) as a non-volatile control component and methofluthrin (0.7 w/v%) as a volatile control component. However, the amount filled into the pressure container was changed to 2.6 mL of the aerosol stock solution (A+B) and 6.2 mL of the propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, the same manner as the metered dose aerosol for space treatment of Example 1 was carried out to obtain a metered dose aerosol for space treatment of Example 41.

[Example 42]
The control components of the aerosol stock solution A in the fixed-dose aerosol for space treatment in Example 1 were cyphenothrin (38 w/v%) as a hardly volatile control component, and transfluthrin (0.7 w/v%) as a volatile control component. ), and the amount filled into the pressure container was changed to 1.8 mL of aerosol stock solution (A+B) and 7.0 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, the same manner as the metered dose aerosol for space treatment of Example 1 was carried out to obtain a metered dose aerosol for space treatment of Example 42.

[Example 43]
The control component of the aerosol stock solution A in the fixed-dose aerosol for space treatment in Example 1 was changed to permethrin (60 w/v%) as a hardly volatile control component, and the organic solvent was changed to isopropanol, and the amount filled into the pressure container was changed to The amount was changed to 2.6 mL of aerosol stock solution A and 6.2 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, Example 43 was obtained in the same manner as the metered dose aerosol for space treatment of Example 1.

[Example 44]
The control component of the aerosol stock solution A in the fixed-dose aerosol for space treatment in Example 1 was changed to phenothrin (53 w/v%) as a hardly volatile control component, and the organic solvent was changed to neothiosole (normal paraffin solvent), and the mixture was placed in a pressure-resistant container. The amount charged into the tank was changed to 2.6 mL of aerosol stock solution A and 6.2 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, Example 44 was obtained in the same manner as the metered dose aerosol for space treatment of Example 1.

[Example 45]
In the fixed-dose aerosol for space treatment in Example 1, the control component of the aerosol stock solution A was changed to phenothrin (30 w/v%) as a hardly volatile control component, and the organic solvent was changed to isopropyl myristate, and the amount filled into the pressure container was changed. was changed to 2.6 mL of aerosol stock solution A and 6.2 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, Example 45 was obtained in the same manner as the metered dose aerosol for space treatment of Example 1.

[Example 46]
The control component of the aerosol stock solution A in the fixed-dose aerosol for space treatment in Example 1 was changed to permethrin (60 w/v%) as a hardly volatile control component, and the organic solvent was changed to IP Clean LX (isoparaffinic solvent). The amount filled into the container was changed to 2.2 mL of aerosol stock solution A and 6.6 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, the same manner as the metered dose aerosol for space treatment of Example 1 was carried out to obtain a metered dose aerosol for space treatment of Example 46.

The above-mentioned "injection test (injection angle 30°)", "injection test (injection angle 45°)", and "injection test (injection angle 60°)" were carried out using the space treatment metered injection aerosols of Examples 41 to 46. , and a “diffusion uniformity test” was conducted. As a result of the test, the composition of the aerosol stock solution A containing a hardly volatile pest control component, or the aerosol stock solution (A+B) containing a hardly volatile pest control component and a volatile pest control component, and the composition of the aerosol stock solution and propellant filled into a pressure-resistant container were determined. The quantitative injection aerosols for space treatment of Examples 41 to 46, which have different volume ratios, are all good in that the occurrence of injection defects at the initial and late stages of use is suppressed at injection angles of 30°, 45°, and 60°. It was confirmed that the material exhibited excellent diffusion uniformity. From this, the effect of suppressing injection defects and the effect of improving diffusion uniformity is not due to the composition of the aerosol stock solution or the setting of the volume ratio between the aerosol stock solution and the propellant filled in the pressure-resistant container, but rather due to the dip tube. It is thought that this was achieved by appropriately setting the height (h) of the tip of the jet and the elevation angle (D) of the jet orifice (spray axis).

[Example 47]
In the fixed-dose aerosol for space treatment in Example 1, the control component of the aerosol stock solution A was changed to transfluthrin (8 w/v%) as the volatile control component, and the organic solvent was changed to ethanol, and the amount filled into the pressure container was changed. , and changed to 2.6 mL of aerosol stock solution B and 6.2 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, Example 47 was obtained in the same manner as the metered dose aerosol for space treatment of Example 1.

[Example 48]
The control component of the aerosol stock solution A in the fixed-dose aerosol for space treatment in Example 1 was changed to transfluthrin (40 w/v%) as the volatile control component, and the organic solvent was changed to isopropanol, and the amount filled into the pressure container was changed. , and changed to 2.6 mL of aerosol stock solution B and 6.2 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, Example 48 was obtained in the same manner as the metered dose aerosol for space treatment of Example 1.

[Example 49]
In the fixed-dose aerosol for space treatment in Example 1, the control component of the aerosol stock solution A was changed to metofluthrin (20 w/v%) as a volatile control component, and the organic solvent was changed to neothiosole (normal paraffin solvent), and the mixture was transferred to a pressure-resistant container. The filling amount was changed to 2.6 mL of aerosol stock solution B and 6.2 mL of propellant. In addition, the actuator was changed to one in which the injection port was provided so that the injection axis made an elevation angle of 45° with respect to the horizontal surface when the pressure container was placed on the horizontal surface. In other respects, Example 49 was obtained in the same manner as the metered dose aerosol for space treatment of Example 1.

The above-mentioned "injection test (injection angle 30°)", "injection test (injection angle 45°)", and "injection test (injection angle 60°)" were carried out using the space treatment metered injection aerosols of Examples 47 to 49. , and a “diffusion uniformity test” was conducted. As a result of the test, the metered-dose aerosols for space treatment of Examples 47 to 49 containing aerosol stock solution B containing volatile pesticidal components were found to be effective at initial use and at injection angles of 30°, 45°, and 60°. It was confirmed that the occurrence of injection defects in the latter stage was suppressed and good diffusion uniformity was exhibited. From this, it can be seen that the effect of suppressing injection defects and the effect of improving diffusion uniformity is not due to the composition of the aerosol stock solution or the setting of the volume ratio of the aerosol stock solution and propellant filled in the pressure-resistant container, but rather due to the dip. It is thought that this was achieved by appropriately setting the height (h) of the tip of the tube and the elevation angle (D) of the injection port (injection axis).

The fixed-dose aerosol for space treatment of the present invention can be used for the purpose of controlling a wide range of pests and mites.

10 Pressure-resistant container 12 Metered injection valve 20 Actuator 21 Injection port 30 Dip tube 30a Tip of dip tube 100 Metered-rate injection aerosol for space treatment D Elevation angle H Horizontal plane O Injection axis S Inner surface of pressure-resistant container

Claims (5)

A pressure-resistant container is provided with a metered injection valve having a volume of 1.0 mL per injection, which is filled with an aerosol stock solution containing a pesticidal component and a propellant, and an injection port connected to the metered injection valve. and a dip tube for supplying the aerosol stock solution and the propellant to the metered injection valve, the metered injection aerosol for space treatment comprising:
The injection force at a distance of 5 cm from the injection port is 5 to 29 gf,
The tip of the dip tube is located at a height of 3 mm or less from the bottom of the pressure container,
The tip of the dip tube is U-shaped or cut diagonally,
When the pressure-resistant container is placed on a horizontal surface, the injection axis of the injection port forms an elevation angle of 40 to 50 degrees with respect to the horizontal surface. 2. The fixed-dose aerosol for space treatment according to claim 1, wherein the pesticidal component contains a non-volatile pesticidal component whose vapor pressure at 30° C. is less than 1×10 ⁻⁴ mmHg. The fixed-dose aerosol for space treatment according to claim 1, wherein the pest control component contains a volatile pest control component having a vapor pressure of 2×10 ⁻⁴ to 1×10 ⁻² mmHg at 30° C. The pesticidal components include a nonvolatile pesticidal component whose vapor pressure at 30°C is less than 1×10 ⁻⁴ mmHg, and a volatile pesticidal component whose vapor pressure at 30°C is 2×10 ⁻⁴ to 1×10 ⁻² mmHg. The metered-dose aerosol for space treatment according to claim 1, comprising the following components. The metered-dose aerosol for space treatment according to any one of claims 1 to 4, wherein the dip tube is configured to be bendable inside the pressure container.

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