Quantitative injection aerosol for space treatment

Abstract

To provide a fixed-dose aerosol for spatial treatment that can uniformly diffuse a chemical agent in a spatial treatment method and suppress the occurrence of poor spraying, for controlling pests, particularly creeping pests and indoor dust mites. [Solution] A fixed-dose aerosol (100) for spatial treatment comprises a pressure-resistant container (10) equipped with a fixed-dose valve (12) containing a concentrated aerosol solution containing a pest control component and a propellant, an actuator (20) equipped with a nozzle (21), and a dip tube (30), wherein the tip (30a) of the dip tube (30) is located at a height of 6 mm or less from the lowest part (B) of the pressure-resistant container (10), and when the pressure-resistant container (10) is placed on a horizontal surface (H), the spray axis (O) of the nozzle (21) forms an elevation angle (D) of 10 to 60° with respect to the horizontal surface (H).

Description

Technical Field

[0001] The present invention relates to a metering injection aerosol for space treatment, comprising a pressure-resistant container provided with a metering injection valve, an actuator provided with an injection port connected to the metering injection valve, and a dip tube.

Background Art

[0002] Metering injection aerosols that can spray a certain amount of drug by a single injection are classified into, for example, metering injection aerosols for coating that locally treat gaps and the like, direct impact metering injection aerosols that directly inject and treat an object, and metering injection aerosols for space treatment in which the drug spreads in space.

[0003] For example, there is a very useful metering injection aerosol for space treatment (see Patent Document 1) that is effective not only against crawling pests and indoor dust mites but also against flying pests on the day of spraying. Based on the recognition that metering injection aerosols for space treatment are efficient in simply treating the entire interior with a drug, the present inventors conducted various studies to improve the injection efficiency and efficacy of the drug. As a result, it was found that the diffusibility of the drug is improved when the metering injection aerosol for space treatment sprays the drug obliquely upward with respect to the horizontal plane.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] (1) In order to spray obliquely upward with respect to the horizontal plane using a metering injection aerosol for space treatment having an actuator provided with a horizontal or (2) obliquely upward injection port, there is a method of use in which the aerosol can is tilted obliquely with respect to the horizontal plane so that the injection axis of the injection port faces obliquely upward and spraying is performed.

[0006] However, in conventional products, injection failures sometimes occurred in such a usage method. In Patent Document 1, it was not recognized that injection failures might occur when spraying obliquely upward, and no measures were taken against such problems.

[0007] The present invention has been made in view of the above problems, and an object thereof is to provide a space treatment metering injection aerosol capable of uniformly diffusing a chemical agent in a space treatment use method and suppressing the occurrence of injection failures, with pests, particularly creeping pests and indoor dust mites, as control targets.

Means for Solving the Problems

[0008] The characteristic configuration of the space treatment metering injection aerosol according to the present invention for solving the above problems is a pressure-resistant container provided with a metering injection valve enclosing an aerosol stock solution containing a control component and a propellant, an actuator provided with an injection port connected to the metering injection valve, and a dip tube for supplying the aerosol stock solution and the propellant to the metering injection valve, and the space treatment metering injection aerosol is the tip of the dip tube is located at a height of 6 mm or less from the lowermost part of the pressure-resistant container, when the pressure-resistant container is placed on a horizontal plane, the injection axis of the injection port forms an elevation angle of 10 to 60° with respect to the horizontal plane.

[0009] The inventor of the present invention conducted various studies on the injection direction of the space treatment metering injection aerosol, and as a result, obtained the knowledge that when the chemical agent is sprayed obliquely upward at around 30 to 60° with respect to the horizontal plane, the diffusion of the chemical agent into the treatment space becomes uniform and efficient treatment can be achieved. According to the metered injection aerosol for space treatment of this configuration, the tip of the dip tube of the metered injection aerosol for space treatment is located at a height of 6 mm or less from the bottom of the pressure-resistant container. When the pressure-resistant container is placed on a horizontal plane, the injection axis of the injection port forms an elevation angle of 10 to 60° with respect to the horizontal plane. Thus, when spraying a control component suitable for pest control such that the injection axis of the injection port forms an angle of 30 to 60° with respect to the horizontal plane, the occurrence of poor injection can be suppressed. In this case, even when the pressure-resistant container is inclined slightly obliquely with respect to the horizontal plane for spraying, since the tip of the dip tube is located at a height of 6 mm or less from the bottom of the pressure-resistant container, the aerosol stock solution and the propellant are surely supplied to the metered injection valve, so that the injection state can be maintained well.

[0010] In the metered injection aerosol for space treatment according to the present invention, the control component preferably contains a poorly volatile control component having a vapor pressure of less than 1×10 -4 mmHg at 30°C.

[0011] According to the metered injection aerosol for space treatment of this configuration, crawling pests and indoor dust mites can be suitably controlled.

[0012] In the metered injection aerosol for space treatment according to the present invention, the control component preferably contains a volatile control component having a vapor pressure of 2×10 -4 ~1×10 -2 mmHg at 30°C.

[0013] According to the metered injection aerosol for space treatment of this configuration, flying pests can be suitably controlled, and in addition, crawling pests and indoor dust mites can also be controlled.

[0014] In the metered injection aerosol for space treatment according to the present invention, the control component is a poorly volatile control component having a vapor pressure of less than 1×10 -4 mmHg at 30°C and a volatile control component having a vapor pressure of 2×10 -4 ~1×10 -2It is preferably contained with a volatile control component of mmHg.

[0015] According to the metered injection aerosol for space treatment of this configuration, flying pests, crawling pests, and indoor dust mites can be controlled simultaneously.

[0016] In the metered injection aerosol for space treatment according to the present invention, The injection axis of the injection port preferably forms an elevation angle of 15 to 50° with respect to the horizontal plane.

[0017] According to the metered injection aerosol for space treatment of this configuration, when the injection axis of the injection port of the metered injection aerosol for space treatment forms an elevation angle of 15 to 50° with respect to the horizontal plane, so that when injecting at an angle such that the injection axis of the injection port is 30 to 60° with respect to the horizontal plane, the angle of tilting the pressure-resistant container can be suppressed, so that the occurrence of injection failure can be suppressed and a stable injection state can be maintained.

[0018] In the metered injection aerosol for space treatment according to the present invention, The tip of the dip tube is preferably located at a height of 3 mm or less from the lowermost part of the pressure-resistant container.

[0019] According to the metered injection aerosol for space treatment of this configuration, when the tip of the dip tube is located at a height of 3 mm or less from the lowermost part of the pressure-resistant container, even when the pressure-resistant container is tilted slightly obliquely with respect to the horizontal plane and injected, the aerosol stock solution and the propellant are surely supplied to the metered injection valve, and the occurrence of injection failure can be suppressed.

[0020] In the metered injection aerosol for space treatment according to the present invention, The injection force at an injection distance of 5 cm is preferably set to 5 to 50 gf.

[0021] According to the metered injection aerosol for space treatment of this configuration, by setting the injection force at an injection distance of 5 cm to 5 to 50 gf, the injected aerosol stock solution can be evenly sedimented and adhered to the exposed surfaces in the treatment space (for example, the floor surface, wall surface, and surfaces of structures such as furniture existing in the treatment space), particularly the entire floor surface, and can achieve a practically sufficient control effect against flying pests, crawling pests, and indoor dust mites.

[0022] In the metered injection aerosol for space treatment according to the present invention, The dip tube is preferably configured to be bendable inside the pressure-resistant container.

[0023] According to the metered injection aerosol for space treatment of this configuration, since the dip tube is configured to be bendable inside the pressure-resistant container, by appropriately bending the dip tube, its tip can be easily arranged at an appropriate position inside the pressure-resistant container.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0025] Hereinafter, the metered injection aerosol for space treatment of the present invention will be described. However, the present invention is not intended to be limited to the configurations and examples described in the embodiments described below.

[0026] FIG. 1 is a cross-sectional view of the metering injection aerosol 100 for space treatment of the present invention. The metering injection aerosol 100 for space treatment includes a pressure-resistant container 10 provided with a metering injection valve 12 enclosing an aerosol stock solution containing a control component and a propellant, an actuator 20 provided with an injection port 21 connected to the metering injection valve 12, and a dip tube 30 for supplying the aerosol stock solution and the propellant to the metering injection valve 12. It is used for controlling flying pests such as mosquitoes and flies, crawling pests such as cockroaches, and pests such as indoor dust mites by space treatment.

[0027] 〔Pressure-resistant container〕 The pressure-resistant container 10 includes a storage portion 11 in which the aerosol stock solution and the propellant are stored, and a metering injection valve 12 assembled to the mouth portion of the storage portion 11. The storage portion 11 has a bottomed cylindrical shape or a bottomed substantially cylindrical shape, and is formed of a resin such as polyethylene terephthalate, or a metal such as aluminum or tinplate. The appearance of the storage portion 11 may be transparent, translucent, or opaque. The shape of the bottom may be any shape that can stand upright, such as a flat shape, a concave shape, or a shape like five petals. It is preferable that a display for allowing the user to recognize that the direction opposite to the direction in which the dip tube 30 curves and the tip 30a faces is the front is provided on the outer surface of the storage portion 11. For example, by printing a display indicating the front direction F at the position P on the outer surface of the storage portion 11, the user can be made to recognize that the direction opposite to the direction in which the dip tube 30 curves and the tip 30a faces is the front. The display indicating the front direction F can be, for example, characters or a pattern, but if it is a pattern that coincides with a pattern printed on the actuator 20 when the injection port 21 is directed in the front direction F, the user can be made to recognize the front direction F without impairing the design. Here, the front direction F is the direction in which it is preferable to direct the injection port 21 during use, and is the direction opposite to the bending direction of the dip tube 30 described later. By directing the injection port 21 in the front direction F indicated by the display P, even when there is little enclosed material in the later stage of use of the space treatment metering injection aerosol 100, when the pressure-resistant container 10 is tilted slightly obliquely upward with respect to the horizontal plane H, the aerosol stock solution and the propellant will accumulate near the tip 30a of the dip tube 30. As a result, when injecting the space treatment metering injection aerosol 100, the suction of the aerosol stock solution and the propellant by the dip tube 30 is improved, and the occurrence of injection failure can be suppressed. Here, "injection failure" means a state in which the volume actually injected by one operation of the actuator 20 is less than 85% of the injection volume of the metering injection valve 12. When the storage portion 11 is made of a transparent or translucent resin, it is preferable that a horizontal display such as a border pattern is further printed on the storage portion 11.The horizontal indication is provided to prevent the space treatment metered injection aerosol 100 from being tilted excessively enough to cause injection failure when it is injected. With such a horizontal indication, the user can use the space treatment metered injection aerosol 100 in an appropriate posture because psychologically, the user tries to align the liquid level of the aerosol stock solution inside the storage part 11 with the horizontal indication.

[0028] The metered injection valve 12 is attached to the mouth part of the storage part 11, connected to the actuator 20 outside the pressure-resistant container 10, and connected to the dip tube 30 inside the pressure-resistant container 10. The metered injection valve 12 has a valve mechanism (not shown) and is set so that the injection volume per normal stroke is 0.2 to 5.0 mL.

[0029] 〔Actuator〕 The actuator 20 is an operating part for injecting the aerosol stock solution. The actuator 20 is connected to the metering injection valve 12 and is provided with an injection port 21 through which the aerosol stock solution jets out from the pressure-resistant container 10 to the outside. Here, the angle of the injection port 21 will be described. FIG. 2 is an explanatory diagram showing (a) the elevation angle of the injection port (injection axis) and (b) the injection direction in the metering injection aerosol 100 for space treatment. In the present invention, when the pressure-resistant container 10 is placed on the horizontal plane H, the angle of the injection axis O of the injection port with respect to the horizontal plane H is defined as the elevation angle D (FIG. 2(a)), and when actually holding the metering injection aerosol 100 for space treatment by hand and injecting the aerosol stock solution into the space, the angle of the injection axis O of the injection port with respect to the horizontal plane H is defined as the injection direction angle E (FIG. 2(b)). Therefore, the elevation angle D is basically an inherent angle of the metering injection aerosol 100 for space treatment, and the injection direction angle E is an angle that varies depending on the injection posture. In the present invention, when the pressure-resistant container 10 is placed on the horizontal plane H, the elevation angle D of the injection axis O of the injection port with respect to the horizontal plane H is set to 10 to 60°, preferably 15 to 50°. If the elevation angle D is 10 to 60°, the aerosol stock solution can be easily injected obliquely upward toward the vicinity of 30 to 60° (that is, the injection direction angle E is made 30 to 60°). If the elevation angle D is less than 10°, it is necessary to excessively tilt the pressure-resistant container 10 in order to inject the aerosol stock solution obliquely upward toward the vicinity of 30 to 60° with respect to the horizontal plane H. When the pressure-resistant container 10 is excessively tilted and injected in such a way, there is a possibility of poor injection. If the elevation angle D exceeds 60°, there is a possibility that the injected aerosol stock solution will adhere to the fingers or the like that operate the actuator 20. In FIG. 2, (a) the metering injection aerosol 100 for space treatment with the elevation angle D set to 60° and (b) the state where the metering injection aerosol 100 for space treatment is tilted downward by 15° and the injection direction angle E is 45° are illustrated as examples.

[0030] Regarding the injection port 21, its number, shape, and size are not particularly limited. The number of injection ports 21 may be one or two or more. However, from the perspective of being simple and manufacturable at low cost, the number of injection ports 21 is preferably one. 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 taken as the injection axis O. 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 those in which the injection port 21 exists at the center of the injection part of the nozzle or actuator, the orthogonal line passing through the center of the central injection port 21 is taken as the injection axis O. For those in which the injection port 21 does not exist at the center of the injection part of the nozzle or actuator, the orthogonal line passing through the center of the circumscribed circle of the polygon connecting the centers of each injection port 21 is taken as the injection axis O.

[0031] The shape (cross-sectional shape) of the injection port 21 may be circular, elliptical, polygonal, or various irregular shapes. The opening area of the injection port 21 is preferably 0.05 - 8.0 mm 2 and more preferably 0.1 - 4.0 mm 2 and even more preferably 0.2 - 3.0 mm 2 For example, when the number of injection ports 21 is one and the shape of the injection port 21 is circular, the size (injection hole diameter) of the injection port 21 is preferably 0.3 mm or more, more preferably 0.4 mm or more, and even more preferably 0.6 mm or more. Also, the injection hole diameter is preferably 3.0 mm or less, more preferably 2.0 mm or less, and even more preferably 1.8 mm or less.

[0032] The actuator 20 may or may not have a nozzle. When it has a nozzle, it may be either with a protruding nozzle or without a protruding nozzle, but the one with a protruding nozzle is preferred. When it is a nozzle-equipped actuator, the length of the nozzle is not particularly limited, but preferably 2.0 to 80 mm, more preferably 3.0 to 70 mm, and particularly preferably 4.0 to 60 mm. As the operation button in the actuator 20, a push-down type or trigger type button can be adopted.

[0033] 〔Dip Tube〕 The dip tube 30 is a hollow member made of resin such as polyethylene or polypropylene attached to the metering injection valve 12, and supplies the aerosol stock solution and the propellant enclosed in the pressure-resistant container 10 to the metering injection valve 12 during the operation of the metering injection valve 12. Although the dip tube 30 itself is in a straight shape, it can be curved when attached to the metering injection valve 12 and inserted into the pressure-resistant container 10. Therefore, by appropriately curving the dip tube, the tip 30a can be easily arranged at an appropriate position within the pressure-resistant container 10. The tip 30a of the dip tube 30 is attached to the metering injection valve 12 such that the height h from the lowermost part B of the pressure-resistant container 10 is 6 mm or less, preferably 3 mm or less. Here, the lowermost part B of the pressure-resistant container 10 is the part of the inner surface of the pressure-resistant container 10 closest to the horizontal plane H when the pressure-resistant container 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. 1, the aerosol stock solution enclosed in the pressure-resistant container 10 will remain at the lowermost part B until the end during the later stage of use of the space treatment metering injection aerosol 100. Therefore, when the tip 30a of the dip tube 30 is at a position 6 mm or less from the lowermost part B of the pressure-resistant container 10, even when the pressure-resistant container 10 is tilted slightly obliquely with respect to the horizontal plane H during injection, the tip 30a will be positioned below the liquid level of the aerosol stock solution and the propellant, and the aerosol stock solution and the propellant can be reliably supplied to the metering injection valve 12. As a result, the occurrence of injection failure during the later stage of use of the space treatment metering injection aerosol 100 can be suppressed. If the height h of the tip 30a from the lowermost part B of the pressure-resistant container 10 exceeds 6 mm, when the pressure-resistant container 10 is tilted slightly obliquely with respect to the horizontal plane H during injection, the tip 30a is likely to be at a position higher than the liquid level of the aerosol stock solution and the propellant, and as a result, there is a risk of injection failure. The dip tube 30 preferably has a straight shape extending vertically downward with one end attached to the metering injection valve 12, a shape extending vertically downward with one end attached to the metering injection valve 12 and curved at the curved portion 30b, or a shape that is curved as a whole.Among these, it is more preferable that the curved portion 30b has a curved shape or the whole has a curved shape such that the tip 30a is positioned near the inner surface S of the pressure-resistant container 10. When the dip tube 30 has a curved shape at the curved portion 30b or the whole has a curved shape and the tip 30a is positioned near the inner surface S of the pressure-resistant container 10, the distance d from the inner surface S of the pressure-resistant container 10 to the tip 30a 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. By the distance d from the inner surface S to the tip 30a being 25 mm or less, even when the pressure-resistant container 10 is inclined obliquely with respect to the horizontal plane H and sprayed, the aerosol stock solution and the propellant near the inner surface S can be surely supplied to the metering injection valve 12, and the occurrence of injection failure can be more suppressed. The tip 30a of the dip tube 30 can be processed into various shapes. FIG. 3 is an enlarged cross-sectional view of the tip of the dip tube of the metering injection aerosol for space treatment, and (a) an obliquely cut oblique end portion, (b) a U-shaped (concave-shaped) cut U end portion, (c) an arc-shaped (convex-shaped) cut arc end portion, and (d) a right-angled cut right end portion are illustrated. Among these, (a) the obliquely cut oblique end portion, (b) the U-shaped cut U end portion, or (c) the arc-shaped cut arc end portion is preferable. By the tip 30a having these shapes, the suction of the aerosol stock solution and the propellant is improved, and the occurrence of injection failure can be more suppressed.

[0034] <Aerosol stock solution> As a control component which is one of the main components of the aerosol stock solution, a compound having a vapor pressure of less than 1×10 -4 mmHg at 30°C (low-volatility control component), a compound having a vapor pressure of 2×10 -4 ~1×10 -2 mmHg at 30°C (volatile control component), or a mixture of (A) and (B) can be used. Hereinafter, those containing a low-volatility control component will be described as aerosol stock solution A, and those containing a volatile control component will be described as aerosol stock solution B.

[0035] [Aerosol stock solution A] As one of the main components of the aerosol stock solution A, as the non-volatile control component, a compound for controlling crawling pests for controlling crawling pests typified by cockroaches, booklice, ants, etc., and / or a compound for controlling mites mainly for controlling indoor dust mites can be used. Examples of the compound for controlling crawling pests include pyrethroid compounds such as phenothrin, cypermethrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and imiprothrin; silicon compounds such as silafluofen; organophosphorus compounds such as dichlorvos and fenitrothion; carbamate compounds such as propoxur; neonicotinoid compounds such as dinotefuran, imidacloprid, and clothianidin; fipronil; and indoxacarb. Among these, phenothrin, cypermethrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and dinotefuran are preferred. In addition, in the acid component and alcohol moiety of the pyrethroid compound, when there are optical isomers and geometric isomers based on asymmetric carbon, each of them and any mixture are also included in the compound for controlling crawling pests. Examples of the compound for controlling mites include amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, 3-iodo-2-propynyl butylcarbamate, phenothrin, and dideet. Among these, amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, phenothrin, and dideet are preferred. When the quantitative injection aerosol 100 for space treatment of the present invention is injected in a fixed amount in an indoor treatment space, the spray particles mainly settle on the floor surface as adherent particles. However, by containing a non-volatile control component, it shows an excellent control effect particularly against crawling pests and indoor dust mites in the treatment space.In addition, by containing a hardly volatile control component, the volatilization of the hardly volatile control component from the adherent particles deposited on the floor surface into the air is suppressed. Due to such an action mechanism, the metered injection aerosol 100 for space treatment of the present invention has high safety and can be used even in a situation where people are present.

[0036] 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 control component in the aerosol stock solution A is within the above range, the control component is easily dissolved in the organic solvent, and when the aerosol is sprayed, the spray particles are formed in an optimal state.

[0037] The aerosol stock solution A contains an organic solvent in addition to the above control component. The organic solvent can dissolve the above control component to prepare the aerosol stock solution A, and when the prepared aerosol stock solution A is sprayed, an organic solvent that can form optimal spray particles is used. In the metered injection aerosol 100 for space treatment of the present invention, examples of the organic solvent include lower alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol (IPA), hydrocarbon solvents such as normal paraffin and isoparaffin, 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 having 2 to 3 carbon atoms are more preferred because they are less likely to cause stickiness on the exposed surfaces in the treatment space (for example, the floor surface, wall surface, and surfaces of structures such as furniture existing in the treatment space), especially the floor surface. The above organic solvents can also be used by mixing two or more kinds. In addition, as the organic solvent, it is also possible to further mix glycol ethers, hydrocarbon solvents such as normal paraffin and isoparaffin, and ketone solvents.

[0038] 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 within the range of 0.85 to 1.15, when the quantitative injection aerosol 100 for space treatment of the present invention is injected in a fixed amount in an indoor treatment space, the spray particles mainly settle and adhere to the floor surface as adhesive particles, so that an appropriate control effect can be obtained. Further, when the specific gravity of the aerosol stock solution A is within the above range, since the adhesive particles also enter gaps and shaded areas during the process of sedimentation, when a pyrethroid-based compound is used as a control component, a sufficient flushing effect can be expected that cockroaches and the like jump out from gaps and shaded areas.

[0039] In addition to the above components, the aerosol stock solution A may also be appropriately blended with fungicides, antibacterial agents, bactericides, fragrances, deodorants, stabilizers, antistatic agents, defoamers, excipients, etc. for molds, fungi, etc. Examples of fungicides, antibacterial agents and bactericides include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, trifolin, 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, hinoki oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, phenylethyl alcohol, amyl cinnamic aldehyde, cumin aldehyde, benzyl acetate and other aromatic components, and fragrance components containing leaf alcohol and leaf aldehyde called "green fragrance".

[0040] [Aerosol stock solution B] As the volatile control component, which is one of the main components of aerosol stock solution B, pest control compounds for controlling flying pests typified by flies and mosquitoes, crawling pests typified by cockroaches, bed bugs, ants, etc., and pests such as indoor dust mites can be used. Examples of the pest control compounds include metofluthrin, profluthrin, transfluthrin, empenthrin, terallethrin, and flumethrin. Among these, considering vapor pressure, stability, basic insecticidal efficacy, etc., metofluthrin, profluthrin, and transfluthrin are preferred. When there are optical isomers or geometric isomers based on asymmetric carbon in the acid component or alcohol part of these compounds, each of them or any mixture is also included in the volatile control component. When the quantitative 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 the volatile control component mainly settle and adhere as adherent particles to the exposed surfaces in the treatment space (for example, the floor surface, wall surface, and surfaces of structures such as furniture existing in the treatment space), particularly the floor surface, and show excellent control effects against flying pests, crawling pests, and indoor dust mites in the treatment space.

[0041] 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 control component in the aerosol stock solution B is within the above range, the control component is easily dissolved in the organic solvent, and when the aerosol is sprayed, the spray particles are formed in an optimal state.

[0042] In addition to the above control component, the aerosol stock solution B contains an organic solvent. The organic solvent can dissolve the above control component to prepare the aerosol stock solution B, and when the prepared aerosol stock solution B is sprayed, an organic solvent that can form optimal spray particles is used. The organic solvents that can be used in the aerosol stock solution B are the same as those that can be used in the above-described aerosol stock solution A.

[0043] The specific gravity of the aerosol stock solution B is preferably 0.78 to 1.15, more preferably 0.82 to 1.10. When the specific gravity of the aerosol stock solution B is within the range of 0.78 to 1.15, when the metered injection aerosol 100 for space treatment of the present invention is injected in a fixed amount into the indoor treatment space, the spray particles mainly adhere uniformly to the exposed surface as adherent particles, so that an appropriate control effect can be obtained.

[0044] In addition to the above components, the aerosol stock solution B may be appropriately blended with fungicides, antibacterial agents, bactericides, fragrances, deodorants, stabilizers, antistatic agents, defoaming agents, excipients, etc. for molds, fungi, etc. These additional components are the same as those added to the above-described aerosol stock solution A.

[0045] [Mixture of aerosol stock solution A and aerosol stock solution B] When the mixture of the above aerosol stock solution A and aerosol stock solution B is used as the aerosol stock solution (A + B), effective control against all of flying pests, crawling pests, and indoor dust mites becomes possible, and it can be used for a wider range of applications. That is, when the metered injection aerosol 100 for space treatment of the present invention is injected in a fixed amount into the indoor treatment space, the spray particles containing the volatile control component derived from the aerosol stock solution B mainly settle and adhere as adherent particles to the exposed surface in the treatment space (for example, the floor surface, wall surface, surface of structures such as furniture, etc. existing in the treatment space), particularly the floor surface, and show an excellent control effect against flying pests, crawling pests, and indoor dust mites in that treatment space. Here, although a certain amount of the spray particles remains floating in the air, by containing the volatile control component derived from the aerosol stock solution B as a control component, a control effect can also be exerted on flying pests. In addition, when the volatile control component derived from the aerosol stock solution B adheres to the floor surface and wall surface in part together with the hardly volatile control component derived from the aerosol stock solution A, the control effect against crawling pests and / or indoor dust mites can be synergistically enhanced.

[0046] <Propellant> As the propellant used in the metered injection aerosol 100 for space treatment of the present invention, liquefied petroleum gas (LPG), dimethyl ether (DME), liquefied gases such as hydrofluoroolefin, and compressed gases such as nitrogen gas, carbon dioxide gas, nitrous oxide, and compressed air can be mentioned. The above-mentioned propellants can be used alone or in a mixed state, but those mainly composed of LPG are easy to use.

[0047] In the metered injection aerosol 100 for space treatment of the present invention, the volume ratio (a / b) of the aerosol stock solution (a) filled in the pressure-resistant container 10 and the propellant (b) is preferably adjusted to 10 / 90 to 50 / 50 in terms of volume ratio. If the volume ratio (a / b) is within the above range, a sufficient amount of the control component can be uniformly diffused over the entire exposed surface, particularly the entire floor surface.

[0048] In the metered injection aerosol 100 for space treatment of the present invention, the injection force is preferably 5 to 50 gf at a position 5 cm away from the injection port 21. If the injection force is within the above range, the injected aerosol stock solution will settle and adhere uniformly to the exposed surface in the treatment space (for example, the floor surface, wall surface, and the surfaces of structures such as furniture existing in the treatment space), particularly the entire floor surface, and a practically sufficient control effect can be obtained against flying pests, crawling pests, and mites. If the injection force is less than 5 gf, the injection force is insufficient and the diffusibility over the entire exposed surface tends to be insufficient. If the injection force exceeds 50 gf, there is a possibility that good diffusibility of the injected aerosol stock solution cannot be obtained. Such an injection force can be appropriately adjusted according to the composition of the aerosol stock solution, the internal pressure of the pressure-resistant container 10, the shape of the injection port 21, etc.

[0049] <Target pests to be controlled> The quantitative injection aerosol 100 for space treatment of the present invention can be used to control various pests, such as flies like Aedes aegypti, Musca sorbens, Musca domestica vicina, and Culex pipiens pallens; mosquitoes like Culex tritaeniorhynchus, Aedes albopictus, and Aedes aegypti; midges; butterflies; black flies; bees; wasps; cockroaches like Blattella germanica, Periplaneta fuliginosa, and Blatta orientalis; booklice like Liposcelis bostrychophila and Liposcelis entomophila; bed bugs like Cimex lectularius; ants like Monomorium pharaonis, Tapinoma melanocephalum, Ochetellus glaber, Tetramorium caespitum, Camponotus japonicus, and Pheidole megacephala; spiders like Argiope amoena, Araneus ventricosus, and Nephila clavata; centipedes like Scolopendra subspinipes; millipedes; termites like Reticulitermes flaviceps, Coptotermes formosanus, Odontotermes formosanus, Reticulitermes speratus, Coptotermes acinaciformis, and Coptotermes gestroi; clothes moths like Tineola bisselliella and Tinea pellionella; stored grain pests like Rhizopertha dominica; and indoor dust mites like Dermatophagoides farinae, Dermatophagoides pteronyssinus, Tyrophagus putrescentiae, Cheyletiella yasguri, and Blomia tropicalis. In particular, it is effective in controlling crawling pests such as cockroaches like Blattella germanica, Periplaneta fuliginosa, and Blatta orientalis; booklice like Liposcelis bostrychophila and Liposcelis entomophila; ants like Monomorium pharaonis, Tapinoma melanocephalum, Ochetellus glaber, Tetramorium caespitum, Camponotus japonicus, and Pheidole megacephala; spiders like Argiope amoena, Araneus ventricosus, and Nephila clavata; and indoor dust mites like Dermatophagoides farinae, Dermatophagoides pteronyssinus, Tyrophagus putrescentiae, Cheyletiella yasguri, and Blomia tropicalis. Especially, it has an excellent control effect on Blattella germanica, Periplaneta fuliginosa, Blatta orientalis, and Liposcelis bostrychophila.

[0050] <Target for treatment> The target for treatment of the quantitative injection aerosol 100 for space treatment of the present invention is mainly the indoor space. The volume of the treatment space is not particularly limited, but it is preferably a volume corresponding to a room of 4.5 to 16 tatami mats, which is 18.8 to 66.6 m 3 (area 7.5 to 26.6 m 2 , height 2.2 to 3.0 m), and more preferably a volume corresponding to a room of 4.5 to 8 tatami mats, which is 18.8 to 33.3 m 3 (area 7.5 to 13.3 m 2, it is more preferable that the height is 2.2 to 3.0 m. However, even in an indoor space with a larger volume or an indoor space with a smaller volume, according to the volume of the indoor space, the release amount of the control component in the air of the indoor space is 0.1 to 50 mg / m 3 By appropriately setting the number of injection times, injection volume, etc. so that it becomes, the same control effect can be obtained regardless of the volume of the indoor space. The frequency of use of the metered injection aerosol for space treatment of the present invention may be applied at an appropriate time according to the occurrence frequency and situation of pests so that the release amount of the control component is within the above range.

Example

[0051] Based on Examples 1 to 49 and Comparative Examples 1 to 7, the metered injection aerosol for space treatment of the present invention was studied in more detail. Regarding the metered injection aerosol for space treatment of the present invention, in order to confirm its effect, a metered injection aerosol for space treatment (Examples 1 to 49) having the characteristic configuration of the present invention was prepared and an injection test was carried out. Further, for comparison, a metered injection aerosol for space treatment (Comparative Examples 1 to 7) not having the characteristic configuration of the present invention was prepared and the same effect confirmation test was carried out.

[0052] 〔Example 1〕 As a poorly volatile control component, phenothrin (40 w / v%) was dissolved in ethanol to prepare aerosol stock solution A. 3.5 mL of this aerosol stock solution A and 5.3 mL of liquefied petroleum gas as a propellant were pressure-filled into a pressure-resistant container equipped with a metering spray valve with an injection volume of 0.4 mL. This filling amount is theoretically sufficient to perform metered injection up to 22 times. An actuator with an injection port was attached to the metering spray valve of the pressure-resistant container so that the injection axis formed an elevation angle (D) of 60° with respect to the horizontal plane when the pressure-resistant container was placed on the horizontal plane, and the metered injection aerosol for space treatment of Example 1 was obtained. In the metered injection aerosol for space treatment of Example 1, a dip tube with a U-shaped cut at the tip was used, and in the pressure-resistant container, it was attached to the metering injection valve so that the height (h) of the tip from the bottom of the pressure-resistant container was 1 mm. The metered injection aerosol for space treatment of Example 1 had an injection force of 15 gf at an injection distance of 5 cm.

[0053] [Examples 2 to 24, Comparative Examples 1 to 5] In accordance with Example 1, various metered injection aerosol for space treatment of Examples 2 to 24 and Comparative Examples 1 to 5 were prepared with the configurations shown in Table 1. In the metered injection aerosol for space treatment of Examples 16, 17, 21, 22, 23, and 24, even when using a metered spray valve with an injection volume of 0.2 mL or 1.0 mL, the filling amount into the pressure-resistant container was adjusted so that theoretically, the metered injection could be carried out up to 22 times at most.

[0054] <Injection test (injection angle 45°)> The metered injection aerosol for space treatment of Examples 1 to 24 and Comparative Examples 1 to 5 was fixed so that the injection axis of the injection port formed an injection angle of 45° with respect to the horizontal plane, and the injection was repeated. Before starting the count of the number of injections, two dry fires were carried out, and then the number of injections until normal injection became impossible was counted. In this example, "normal injection becomes impossible" has the same meaning as the aforementioned "injection failure", which means that the actually injected volume by operating the actuator is less than 85% of the injection volume of the metered injection valve. The same applies to the following examples. The test was repeated 4 times for each metered injection aerosol for space treatment, and according to the average value of the number of injections, the injection failure suppression effect was evaluated according to the following evaluation criteria. (Evaluation criteria) A: 18 times or more B: 16 or 17 times C: 14 or 15 times D: Less than 14 times

[0055] Also, if injection failure occurred up to the second count start at least once during the four tests, it was determined that there was injection failure at the initial stage of use. The test results are shown in Table 1.

[0056]

Table 1

[0057] As a result of the tests, when the chemical agent was sprayed obliquely upward at 45° with respect to the horizontal plane, in the metered injection aerosol for space treatment of Examples 1 to 24, the number of injection times until normal injection became impossible was 14 times or more in all cases, and the occurrence of injection failure in the latter stage of use was suppressed. Among them, in the metered injection aerosol for space treatment of Examples 1 to 6, 8 to 19, and 21 to 24, which were equipped with an actuator provided with an injection port such that the injection axis formed an elevation angle of 15° or more with respect to the horizontal plane when the pressure-resistant container was placed on the horizontal plane, and used a dip tube with a U-shaped or obliquely cut tip, the effect of suppressing injection failure in the latter stage of use was particularly excellent. In addition, in the metered injection aerosol for space treatment of Examples 1 to 24, injection failure did not occur even in the initial stage of use.

[0058] On the other hand, in the metered injection aerosol for space treatment of Comparative Examples 1 to 5, the number of injection times until normal injection became impossible was 13 times or less in all cases, and the occurrence of injection failure in the latter stage of use was not sufficiently suppressed. In addition, in the metered injection aerosol for space treatment of Comparative Examples 1 to 3 and 5, injection failure also occurred in the initial stage of use.

[0059] [Examples 25 to 32, Comparative Examples 6 and 7] In accordance with Example 1, various metered injection aerosols for space treatment of Examples 25 to 32, Comparative Example 6, and Comparative Example 7 were produced with the configurations shown in Table 2.

[0060] [Injection Test (Injection Angle 30°)] The metered injection aerosols for space treatment of Examples 25 to 32, and Comparative Example 6 and Comparative Example 7 were fixed so that the injection axis of the injection port formed an injection angle of 30° with respect to the horizontal plane, and injection was repeated. Two dry fires were performed before starting the count of the number of injection times, and then the number of injection times until normal injection became impossible was counted. The test was repeated 4 times for each metered injection aerosol for space treatment, and the effect of suppressing injection failure was evaluated according to the following evaluation criteria according to the average value of the number of injection times. [Evaluation Criteria] A: 18 times or more B: 16 or 17 times C: 14 or 15 times D: Less than 14 times

[0061] Also, when injection failure occurred at least once out of the four tests before the second count start, it was determined that there was injection failure in the initial stage of use. The test results are shown in Table 2.

[0062]

Table 2

[0063] As a result of the tests, when the chemical agent was sprayed obliquely upward at 30° with respect to the horizontal plane, in the space treatment metered injection aerosol of Examples 25 to 32, the number of injection times until normal injection became impossible was 15 or more in all cases, and the occurrence of injection failure in the latter stage of use was suppressed. Among them, the space treatment metered injection aerosol of Examples 26 to 32 equipped with an actuator provided with an injection port such that the injection axis forms an elevation angle of 50° or less with respect to the horizontal plane when the pressure-resistant container is placed on the horizontal plane had a particularly excellent effect of suppressing injection failure in the latter stage of use. Also, in the space treatment metered injection aerosol of Examples 25 to 32, injection failure did not occur in the initial stage of use.

[0064] On the other hand, in the space treatment metered injection aerosol of Comparative Examples 6 and 7, the number of injection times until normal injection became impossible was 14 or less in all cases, and the effect of suppressing injection failure in the latter stage of use was inferior to that of the space treatment metered injection aerosol of Examples 25 to 32. Also, injection failure occurred in the initial stage of use in the space treatment metered injection aerosol of Comparative Examples 6 and 7.

[0065] 〔Example 33〕 2.7 mL of aerosol stock solution A and 6.1 mL of liquefied petroleum gas as a propellant were pressure-filled into a pressure-resistant container. Otherwise, the space treatment metered injection aerosol of Example 33 was obtained by the same procedure as the space treatment metered injection aerosol of Example 1.

[0066] 〔Examples 34 to 38〕 In accordance with Example 33, various space treatment metered injection aerosols of Examples 34 to 38 were prepared with the configurations shown in Table 3.

[0067] <Spraying Test (spraying angle: 60°)> The quantitative injection aerosol for space treatment of Examples 33 to 38 was fixed so that the injection axis of the injection port formed an injection angle of 60° with respect to the horizontal plane, and the injection was repeated. Two dry shots were performed before starting the count of the number of injections, and then the number of injections until normal injection became impossible was counted. The test was repeated 4 times for each quantitative injection aerosol for space treatment, and the injection failure suppression effect was evaluated according to the following evaluation criteria according to the average value of the number of injections. (Evaluation Criteria) A: 18 times or more B: 16 or 17 times C: 14 or 15 times D: Less than 14 times

[0068] In addition, when injection failure occurred by the second count start at least once in the 4 tests, it was determined that there was injection failure in the initial stage of use. The test results are shown in Table 3.

[0069]

Table 3

[0070] As a result of the test, when the drug was sprayed obliquely upward at 60° with respect to the horizontal plane, in the quantitative injection aerosol for space treatment of Examples 33 to 38, the number of injections until normal injection became impossible was all 15 times or more, and the occurrence of injection failure in the latter stage of use was suppressed. Among them, the quantitative injection aerosol for space treatment of Examples 34 to 36 equipped with an actuator in which the injection port was provided so that the injection axis formed an elevation angle of 40 to 50° with respect to the horizontal plane when the pressure-resistant container was placed on the horizontal plane had a particularly excellent injection failure suppression effect in the latter stage of use. In addition, in the quantitative injection aerosol for space treatment of Examples 33 to 38, injection failure in the initial stage of use did not occur either.

[0071] 〔Examples 39, 40〕 In accordance with Example 1, various metered spray aerosols for space treatment of Examples 39 and 40 were prepared with the configurations shown in Table 4. In the metered spray aerosols for space treatment of Examples 39 and 40, even when a metering spray valve with an injection volume of 0.2 mL or 2.0 mL was used, the filling amount into the pressure-resistant container was adjusted so that, theoretically, metered injection could be performed up to 22 times at most.

[0072] <Diffusion uniformity test> Sealed volume 25m 3 of the room (area 10m 2 , height 2.5m), glass plates of 20×20 cm were installed at 6 to 8 locations on the floor surface. The metered spray aerosols for space treatment of Examples 13 to 17, 39, and 40 were held at the center of the room at a height of 1.5 m so that the injection axis of the injection port formed an injection angle of 45° with respect to the horizontal plane, and a fixed amount of injection treatment was performed. One hour after the injection treatment, all the glass plates were taken out, the control components attached to each glass plate were washed out with acetone, and analyzed by gas chromatography. Regarding the control components attached to the glass plates, the variation between the glass plates was analyzed to evaluate the diffusion uniformity of the spray particles. The results are shown in three levels of A, B, and C in descending order of good diffusion uniformity. Also, for the metered spray aerosols for space treatment of Examples 39 and 40, the above-mentioned "injection test (injection angle 45°)" was carried out. The test results of the injection test (injection angle 45°) and the diffusion uniformity test are shown in Table 4.

[0073]

Table 4

[0074] As a result of the tests, when the chemical agent was sprayed obliquely upward at 45° with respect to the horizontal plane, in the metered injection aerosol for space treatment of Examples 39 and 40, similar to the metered injection aerosol for space treatment of Examples 13 to 17, the occurrence of any injection failures was suppressed both in the initial stage and the later stage of use. However, in the metered injection aerosol for space treatment of Examples 39 and 40, the diffusion uniformity was inferior to that of the metered injection aerosol for space treatment of Examples 13 to 17. From this, it is considered that in order to improve the diffusion uniformity, it is preferable that the injection force at an injection distance of 5 cm is in the range of 5 to 50 gf, like the metered injection aerosol for space treatment of Examples 13 to 17.

[0075] [Example 41] In the aerosol stock solution A of the metered injection aerosol for space treatment of Example 1, the control component was changed to phenothrin (53 w / v%) as a poorly volatile control component and metofluthrin (0.7 w / v%) as a volatile control component, and the filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution (A + B) and 6.2 mL of propellant. Also, the actuator was changed to one provided with an injection port such that the injection axis forms an elevation angle of 45° with respect to the horizontal plane when the pressure-resistant container is placed on the horizontal plane. Otherwise, the metered injection aerosol for space treatment of Example 41 was obtained in the same manner as the metered injection aerosol for space treatment of Example 1.

[0076] [Example 42] In the aerosol stock solution A of the metered injection aerosol for space treatment of Example 1, the control component was changed to sumithrin (38 w / v%) as a poorly volatile control component and transfluthrin (0.7 w / v%) as a volatile control component, and the filling amounts into the pressure-resistant container were changed to 1.8 mL of aerosol stock solution (A + B) and 7.0 mL of propellant. Also, the actuator was changed to one provided with an injection port such that the injection axis forms an elevation angle of 45° with respect to the horizontal plane when the pressure-resistant container is placed on the horizontal plane. Otherwise, the metered injection aerosol for space treatment of Example 42 was obtained in the same manner as the metered injection aerosol for space treatment of Example 1.

[0077] [Example 43] In the metered injection aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to permethrin (60 w / v%) as a poorly volatile control component, and the organic solvent was changed to isopropanol. The filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution A and 6.2 mL of the propellant. Also, the actuator was changed to one provided with an injection port such that when the pressure-resistant container was placed on a horizontal plane, the injection axis formed an elevation angle of 45° with respect to the horizontal plane. Otherwise, a metered injection aerosol for space treatment of Example 43 was obtained in the same manner as the metered injection aerosol for space treatment of Example 1.

[0078] [Example 44] In the metered injection aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to phenothrin (53 w / v%) as a poorly volatile control component, and the organic solvent was changed to neothiozol (normal paraffin-based solvent). The filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution A and 6.2 mL of the propellant. Also, the actuator was changed to one provided with an injection port such that when the pressure-resistant container was placed on a horizontal plane, the injection axis formed an elevation angle of 45° with respect to the horizontal plane. Otherwise, a metered injection aerosol for space treatment of Example 44 was obtained in the same manner as the metered injection aerosol for space treatment of Example 1.

[0079] [Example 45] In the metered injection aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to phenothrin (30 w / v%) as a poorly volatile control component, and the organic solvent was changed to isopropyl myristate. The filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution A and 6.2 mL of the propellant. Also, the actuator was changed to one provided with an injection port such that when the pressure-resistant container was placed on a horizontal plane, the injection axis formed an elevation angle of 45° with respect to the horizontal plane. Otherwise, a metered injection aerosol for space treatment of Example 45 was obtained in the same manner as the metered injection aerosol for space treatment of Example 1.

[0080] [Example 46] In the quantitative injection aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to permethrin (60 w / v%) as a poorly volatile control component, and the organic solvent was changed to IP Clean LX (isoparaffin-based solvent). The filling amounts into the pressure-resistant container were changed to 2.2 mL of aerosol stock solution A and 6.6 mL of the propellant. Also, the actuator was changed to one with an injection port provided such that when the pressure-resistant container was placed on a horizontal plane, the injection axis made an elevation angle of 45° with respect to the horizontal plane. Otherwise, a quantitative injection aerosol for space treatment of Example 46 was obtained in the same manner as the quantitative injection aerosol for space treatment of Example 1.

[0081] Using the quantitative injection aerosols for space treatment of Examples 41 to 46, the above-mentioned "injection test (injection angle 30°)", "injection test (injection angle 45°)", "injection test (injection angle 60°)", and "diffusion uniformity test" were carried out. As a result of the tests, it was confirmed that the quantitative injection aerosols for space treatment of Examples 41 to 46, in which the compositions of aerosol stock solution A containing a poorly volatile control component or aerosol stock solution (A + B) containing a poorly volatile control component and a volatile control component, and the volume ratio of the aerosol stock solution filled in the pressure-resistant container to the propellant were different from each other, all suppressed the occurrence of injection failures at the initial and late stages of use at injection angles of 30°, 45°, and 60°, and exhibited good diffusion uniformity. From this, it is considered that the injection failure suppression effect and the diffusion uniformity improvement effect were not obtained by setting the composition of the aerosol stock solution and the volume ratio of the aerosol stock solution filled in the pressure-resistant container to the propellant, but were obtained by appropriately setting the height (h) of the tip of the dip tube and the elevation angle (D) of the injection port (injection axis).

[0082] 〔Example 47〕 In the metered spray aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to transfluthrin (8 w / v%) as a volatile control component, and the organic solvent was changed to ethanol. The filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution B and 6.2 mL of the propellant. Also, the actuator was changed to one with an injection port provided such that when the pressure-resistant container was placed on a horizontal plane, the injection axis made an elevation angle of 45° with respect to the horizontal plane. Otherwise, a metered spray aerosol for space treatment of Example 47 was obtained in the same manner as the metered spray aerosol for space treatment of Example 1.

[0083] [Example 48] In the metered spray aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to transfluthrin (40 w / v%) as a volatile control component, and the organic solvent was changed to isopropanol. The filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution B and 6.2 mL of the propellant. Also, the actuator was changed to one with an injection port provided such that when the pressure-resistant container was placed on a horizontal plane, the injection axis made an elevation angle of 45° with respect to the horizontal plane. Otherwise, a metered spray aerosol for space treatment of Example 48 was obtained in the same manner as the metered spray aerosol for space treatment of Example 1.

[0084] [Example 49] In the metered spray aerosol for space treatment of Example 1, the control component of aerosol stock solution A was changed to metofluthrin (20 w / v%) as a volatile control component, and the organic solvent was changed to neothiozol (normal paraffin-based solvent). The filling amounts into the pressure-resistant container were changed to 2.6 mL of aerosol stock solution B and 6.2 mL of the propellant. Also, the actuator was changed to one with an injection port provided such that when the pressure-resistant container was placed on a horizontal plane, the injection axis made an elevation angle of 45° with respect to the horizontal plane. Otherwise, a metered spray aerosol for space treatment of Example 49 was obtained in the same manner as the metered spray aerosol for space treatment of Example 1.

[0085] Using the metered injection aerosol for space treatment of Examples 47 to 49, the above-mentioned "injection test (injection angle 30°)", "injection test (injection angle 45°)", "injection test (injection angle 60°)", and "diffusion uniformity test" were carried out. As a result of the test, it was confirmed that the metered injection aerosols for space treatment of Examples 47 to 49 containing the aerosol stock solution B containing the volatile control component were all suppressed from occurring injection failures at the initial stage and the later stage of use at injection angles of 30°, 45°, and 60°, and exhibited good diffusion uniformity. From this, it is also considered that the injection failure suppression effect and the diffusion uniformity improvement effect were not obtained by the composition of the aerosol stock solution and the setting of the volume ratio of the aerosol stock solution filled in the pressure-resistant container to the propellant, but were obtained by appropriately setting the height (h) of the tip of the dip tube and the elevation angle (D) of the injection port (injection axis).

Industrial Applicability

[0086] The metered injection aerosol for space treatment of the present invention can be used for the purpose of controlling a wide range of pests and mites.

Explanation of Signs

[0087] 10 Pressure-resistant container 12 Metered injection valve 20 Actuator 21 Injection port 30 Dip tube 30a Tip of the dip tube 100 Metered injection aerosol for space treatment D Elevation angle H Horizontal plane O Injection axis S Inner surface of the pressure-resistant container

Claims

1. A pressure-resistant container having a bottom shape that can stand upright, provided with a metering injection valve enclosing an aerosol stock solution containing a control ingredient and a propellant, an actuator provided with an injection port connected to the metering injection valve, and a dip tube for supplying the aerosol stock solution and the propellant to the metering injection valve. A metering injection aerosol for space treatment, wherein the metering injection valve has an injection volume per stroke of 0.2 to 1.0 mL, 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 5 mm or less from the lowermost part, which is the part closest to the horizontal plane on the inner surface of the pressure-resistant container when the pressure-resistant container is placed on a horizontal plane, the tip of the dip tube is in a U shape or cut obliquely, when the pressure-resistant container is placed on a horizontal plane, the injection axis of the injection port forms an elevation angle of 40 to 50° with respect to the horizontal plane, A metering injection aerosol for space treatment, wherein at an injection angle of 30 to 60° formed by the injection axis of the injection port with respect to the horizontal plane, the ratio of the number of injections (measured value) until normal injection becomes impossible to the number of normal injections (theoretical value) is 90% or more.

2. A pressure-resistant container having a bottom shape that can stand upright, provided with a metering injection valve enclosing an aerosol stock solution containing a control ingredient and a propellant, an actuator provided with an injection port connected to the metering injection valve, and a dip tube for supplying the aerosol stock solution and the propellant to the metering injection valve. A metering injection aerosol for space treatment, wherein the metering injection valve has an injection volume per stroke of 0.2 to 1.0 mL, 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 5 mm or less from the lowermost part, which is the part closest to the horizontal plane on the inner surface of the pressure-resistant container when the pressure-resistant container is placed on a horizontal plane, the tip of the dip tube is cut obliquely, when the pressure-resistant container is placed on a horizontal plane, the injection axis of the injection port forms an elevation angle of 15 to 60° with respect to the horizontal plane, A metered injection aerosol for space treatment, wherein, when the injection angle formed by the injection axis of the injection port with respect to the horizontal plane is 30 to 60°, the ratio of the number of injections (measured value) until the injection cannot be performed normally to the number of injections (theoretical value) that can be normally injected quantitatively is 90% or more.

3. The control ingredient contains a poorly volatile control ingredient having a vapor pressure at 30 °C of less than 1 × 10 －４ mm Hg, and the metered injection aerosol for space treatment according to claim 1 or 2.

4. The control ingredient contains a volatile control ingredient having a vapor pressure of 2 × 10 －４ to 1 × 10 －２ mmHg at 30°C, and is the metered spray aerosol for space treatment according to claim 1 or 2.

5. The control ingredient has a vapor pressure of 1×10 at 30° C. －４ A hardly volatile control ingredient having a vapor pressure of less than 2×10 at 30° C. －４ ~1×10 －２ 3. The metered-quantity spray aerosol for spatial treatment according to claim 1 or 2, which contains a volatile pest control component having a viscosity of mmHg.

6. The metered injection aerosol for space treatment according to any one of claims 1 to 5, wherein the tip of the dip tube is located at a height of 3 mm or less from the lowermost part of the pressure-resistant container.

7. The metered injection aerosol for space treatment according to any one of claims 1 to 5, wherein the tip of the dip tube is located at a height of 1 mm or less from the lowermost part of the pressure-resistant container.

8. The metered injection aerosol for space treatment according to any one of claims 1 to 7, wherein the dip tube is configured to be bendable inside the pressure-resistant container.

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