Insect control composition for glass, and insect control spray for glass

Abstract

The present invention aims to provide a glass pest control composition and a glass pest control spray that are difficult to see when they adhere to the glass surface. [Solution] A glass pest control composition having a contact angle with glass of 4.0 to 8.0° at 25°C, and a glass pest control spray containing the same.

Description

Technical Field

[0001] The present invention relates to a pest control composition for glass and a pest control spray for glass.

Background Art

[0002] Conventionally, a pest control composition for glass has been used to control pests that approach and stay near glass such as windows. Generally, a pest control composition for glass is filled in a spray such as an aerosol and used.

[0003] Since a pest control composition for glass is used by being adhered to the glass surface in order to exhibit the function of pest control, the adhesion itself may be felt as dirt on the glass surface. As a countermeasure against such problems, for example, in Patent Document 1, by using a higher fatty acid ester having a low freezing point such as isocetyl myristate as a film-forming component, the composition is maintained in a liquid state at room temperature and a transparent film is formed. has been proposed. On the other hand, in Patent Document 2, it has been proposed to blend a higher fatty acid ester compound such as isocetyl stearate in order to disperse pyrethroid insecticidal components so that a spray film is not formed on the glass surface.

[0004] Further, in Patent Document 3, it has been proposed to use a paraffinic hydrocarbon having a specific evaporation rate as a main solvent in order to prevent the aerosol stock solution from dripping and impairing the aesthetic appearance due to slow drying on the glass surface.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

[0006] However, conventional glass pest control compositions have room for improvement in terms of not impairing the cleanliness of the glass surface. In other words, conventional glass pest control compositions may be visible when they adhere to the glass surface, potentially giving the viewer the impression that the glass is dirty.

[0007] In view of the above circumstances, the object of the present invention is to provide a glass insect control composition and a glass insect control spray that are difficult to see when they adhere to the glass surface. [Means for solving the problem]

[0008] The glass pest control composition according to the present invention has a contact angle with glass of 4.0 to 8.0° at 25°C. The contact angle is preferably 5.0 to 8.0°, and more preferably 5.2 to 8.0°.

[0009] Furthermore, one embodiment of the glass pest control composition according to the present invention has a vapor pressure of 1.33 × 10 at 25°C. -3 Contains low-volatility insecticide components with a Pa level of volatility.

[0010] Furthermore, in one embodiment of the glass pest control composition according to the present invention, the non-volatile pest control component is a pyrethroid compound.

[0011] Furthermore, one embodiment of the glass pest control composition according to the present invention comprises one or more solvents selected from the group consisting of alcohol-based solvents and hydrocarbon solvents.

[0012] Furthermore, one embodiment of the glass pest control composition according to the present invention includes one or more additives selected from the group consisting of fatty acid esters, surfactants, ultraviolet absorbers, light stabilizers, film-forming agents, and silicone oils.

[0013] Next, the glass pest control spray according to the present invention is filled with any of the above-mentioned glass pest control compositions.

[0014] Furthermore, one embodiment of the glass pest control spray according to the present invention is configured such that the particle size (D50) of the sprayed particles at a position 40 cm from the spray nozzle is 5 to 70 μm. [Effects of the Invention]

[0015] As described above, the present invention provides a glass insect repellent composition and a glass insect repellent spray that are difficult to see when they adhere to the glass surface. [Modes for carrying out the invention]

[0016] An embodiment of the present invention of a glass pest control composition will be described.

[0017] The glass pest control composition according to this embodiment has a contact angle with glass of 4.0 to 8.0° at 25°C. This makes the glass pest control composition itself difficult to see on the glass surface. The contact angle is preferably 5.0 to 8.0°, more preferably 5.2 to 8.0°, and even more preferably 5.2 to 7.5°.

[0018] The glass pest control composition of this embodiment comprises a pest control component as an active ingredient and a solvent that dissolves the pest control component. The glass pest control composition of this embodiment has a contact angle of 8.0° or less, allowing it to spread thinly on the glass surface and become less visible. Furthermore, the glass pest control composition of this embodiment has a contact angle of 4.0° or more, ensuring a sufficient film thickness on the glass surface and allowing for a relatively long evaporation time of the solvent, thus making it less visible.

[0019] The contact angle is measured using an automatic contact angle meter (manufactured by KRUSS, Germany, DSA25) on a measuring glass made of borosilicate glass (manufactured by Matsunami Glass Industry Co., Ltd., corner cover glass, 18 mm × 18 mm, flatness in JIS R3702 of 0.010 mm or less). In the measurement of the contact angle, in a measurement environment at 25°C and atmospheric pressure, a video is taken while the surface of the measuring glass and the needle (manufactured by KRUSS, Germany, NE44) at the tip of the syringe (manufactured by KRUSS, Germany, SY3601) of the automatic contact angle meter are reflected with a camera angle of 0° and a magnification of 1.25 times. Specifically, the pest control composition for glass is extruded from the syringe at a rate of 2.67 μL / second, the droplet when 4 μL has been extruded is brought into contact with the surface of the measuring glass, and the contact angle in the still image 1 second after the droplet has separated from the needle is determined by the width-height method (θ / 2 method).

[0020] The pest control composition for glass preferably does not show visual turbidity. Even if the pest control composition for glass does not show turbidity before application to the glass surface, if the contact angle is outside the above range, it may be visually recognized on the glass surface, while if the contact angle is within the above range, such a possibility can be reduced. The above turbidity may be determined using an ultraviolet-visible spectrophotometer (manufactured by Shimadzu Corporation, UV1800). Specifically, in a measurement environment at 25°C, the pest control composition for glass is placed in a quartz glass cuvette with an optical path length of 10 mm, the measurement mode is set to photometric, and the absorbance at a wavelength of 660 nm is measured. When the absorbance with only the solvent formulated in the pest control composition for glass in the cuvette is set to 0, the absorbance of the pest control composition for glass is preferably 0.05 or less. With this absorbance, it can be said that the pest control composition for glass does not show turbidity.

[0021] Examples of the pest control component include pyrethroid compounds, carbamate compounds, neonicotinoid compounds, meta-diamide compounds, and oxadiazole compounds. The pest control component may be an essential oil.

[0022] Examples of the pyrethroid compound may include compounds having a halogen group such as cyfluthrin, permethrin, tralomethrin, bifenthrin, metofluthrin, transfluthrin, momfluorothrin, and profenoflorothrin, and may also include compounds having no halogen group such as phenothrin, fenpropathrin, silafluofen, empenthrin, phthalthrin, imiprothrin, resmethrin, flumethrin, allethrin, prallethrin, and etofenprox. The pyrethroid compound may be a compound having at least one kind of halogen group, and may also be a compound having at least one of a fluoro group and a chloro group.

[0023] Examples of the carbamate compound include carbaryl and propoxur. Examples of the neonicotinoid compound include clothianidin, nitenpyram, thiacloprid, thiamethoxam, and dinotefuran. Examples of the meta-diamide compound include broflanilide. Examples of the oxadiazole compound include methoxadiazone.

[0024] From the viewpoint of the persistence of the insect pest control effect, the pest control component is preferably a poorly volatile component having a vapor pressure of less than 1.33×10 -3 Pa at 25°C, and more preferably a poorly volatile component having a vapor pressure of less than 1.00×10 -4 Pa at 25°C. The pest control component is more preferably a poorly volatile pyrethroid compound having such a vapor pressure, and cyfluthrin, permethrin, bifenthrin, and etofenprox are even more preferable, and cyfluthrin and permethrin are particularly preferable.

[0025] The insecticide component may be a liquid component at normal operating temperatures (e.g., 10-40°C) that does not separate (does not form droplets) in the solvent at those temperatures. Alternatively, the insecticide component may be a solid component at normal operating temperatures (e.g., 10-40°C) that can dissolve in the solvent at those temperatures. The insecticide component may be a transparent liquid or solid, a yellow liquid or solid, or a white solid.

[0026] The content of the aforementioned pest control component is preferably 0.01% by mass or more and 20% by mass or less, more preferably 0.05% by mass or more and 15% by mass or less, even more preferably 0.05% by mass or more and 10% by mass or less, even more preferably 0.05% by mass or more and 5% by mass or less, and particularly preferably 0.1% by mass or more and 3% by mass or less, based on the total mass of the aforementioned pest control composition for glass.

[0027] Examples of the solvent include alcohol-based solvents, hydrocarbon-based solvents, glycol ether-based solvents, ester-based solvents, silicone-based solvents, and ketone-based solvents. The solvent preferably has an evaporation rate of 5 or more, and more preferably 20 or more, when the evaporation rate of butyl acetate is set to 100.

[0028] Examples of the alcohol-based solvents include C1-C4 monools such as methanol (evaporation rate 370), ethanol (evaporation rate 203), iso-propanol (evaporation rate 205), n-propanol (evaporation rate 100), iso-butanol (evaporation rate 83), and n-butanol (evaporation rate 45); glycols such as ethylene glycol, propylene glycol, polyethylene glycol, and polypropylene glycol; and 1,3-propanediol and 3-methoxy-3-methylbutanol. The alcohol-based solvent preferably has an evaporation rate of 40-400, and more preferably 90-220, when the evaporation rate of butyl acetate is set to 100.

[0029] Examples of hydrocarbon solvents include aliphatic hydrocarbon solvents, alicyclic hydrocarbon solvents, and aromatic hydrocarbon solvents. Examples of aliphatic hydrocarbon solvents include normal paraffins such as n-heptane, n-octane, n-nonane, n-decane, n-undecane, n-dodecane, n-tridecane, n-tetradecane, and n-pentadecane, and isoparaffins such as iso-heptane, iso-octane, iso-nonane, iso-decane, iso-undecane, iso-dodecane, iso-tridecane, iso-tetradecane, and iso-pentadecane. Examples of alicyclic hydrocarbon solvents include cyclopentane, cyclohexane, 4-methyl-1-isopropylcyclohexane, cyclooctane, and decalin. Examples of aromatic hydrocarbon solvents include toluene, xylene, ethylbenzene, diethylbenzene, isopropylbenzene, and 1-pentylbenzene. The hydrocarbon solvent is preferably such that its evaporation rate is 5 to 200 when the evaporation rate of butyl acetate is set to 100.

[0030] Examples of the glycol ether solvents include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, and diethylene glycol monohexyl ether; ethylene glycol dialkyl ethers such as ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, and diethylene glycol diethyl ether; propylene glycol monoalkyl ethers such as propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monopropyl ether, and dipropylene glycol monobutyl ether; and glycol ether esters such as ethylene glycol monobutyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol-1-monomethyl ether-2-acetate, and dipropylene glycol methyl ether acetate.

[0031] Examples of the ester-based solvents include methyl acetate, ethyl acetate, propyl acetate, butyl acetate, ethyl methoxyethyl acetate, ethyl ethoxyethyl acetate, 2-methoxybutyl acetate, 3-methoxybutyl acetate, 4-methoxybutyl acetate, 3-methoxy-3-methylbutyl acetate, and 3-ethyl-3-methoxybutyl acetate.

[0032] The aforementioned silicone-based solvent is defined as the kinematic viscosity (mm²) at 25°C, as measured by the measurement method described in JIS Z8803. 2Silicones with a polymerization ratio of 4 or less ( / s) are preferred. Examples of such silicones include dimethylpolysiloxanes with a polymerization degree of 8 or less, such as octamethyltrisiloxane and decamethyltetrasiloxane, and cyclopentasiloxane.

[0033] Examples of the ketone-based solvents include acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, and cyclohexanone.

[0034] The solvent content is preferably 80% to 99.9% by mass, and more preferably 80% to 97% by mass, based on the total mass of the glass pest control composition. By using a solvent with a high evaporation rate, or by increasing the proportion of the solvent with a high evaporation rate, the contact angle of the glass pest control composition can be reduced.

[0035] The glass pest control composition preferably contains one or more solvents selected from the group consisting of alcohol-based solvents and hydrocarbon-based solvents. The glass pest control composition preferably contains 50% by mass or more of either the alcohol-based solvent or the hydrocarbon-based solvent, and more preferably 60% by mass or more, based on the total mass of the solvent. Specifically, the glass pest control composition preferably contains 60% by mass or more of one or more of the alcohol-based solvents, or 60% by mass or more of one or more of the hydrocarbon-based solvents, based on the total mass of the solvent. The content of the alcohol-based solvent relative to the total mass of the solvent may be 100% by mass or less. Also, the content of the hydrocarbon-based solvent relative to the total mass of the solvent may be 100% by mass or less. Alternatively, the glass pest control composition may contain one or more alcohol-based solvents in an amount of 60% to 99.9% by mass relative to the total mass of the solvent, or it may contain one or more of the normal paraffins and isoparaffins in an amount of 60% to 99.9% by mass relative to the total mass of the solvent, and further contain one or more selected from the group consisting of glycol ether-based solvents, silicone-based solvents and ketone-based solvents. In such a glass pest control composition containing a solvent, the contact angle is particularly preferably 5.2 to 7.5°.

[0036] The aforementioned glass pest control composition may contain additives such as fatty acid esters, surfactants, ultraviolet absorbers, light stabilizers, film-forming agents, and silicone oil. Preferably, the glass pest control composition contains at least one additive selected from the group consisting of fatty acid esters, ultraviolet absorbers, light stabilizers, film-forming agents, and silicone oil, and more preferably, at least one additive selected from the group consisting of ultraviolet absorbers, light stabilizers, and film-forming agents. This allows for long-term pest control effects to be imparted to the glass surface. Preferably, the additive is liquid at normal operating temperatures (e.g., 10-40°C) so as not to separate (not form droplets) in the solvent at those operating temperatures. Preferably, the additive is solid at normal operating temperatures (e.g., 10-40°C) so as to be soluble in the solvent at those operating temperatures.

[0037] The fatty acid ester is preferably an ester of a fatty acid having 5 or more carbon atoms and a monohydric alcohol. Examples of such fatty acid esters include isopropyl isostearate, isopropyl myristate, isopropyl palmitate, isostearyl palmitate, octyl palmitate, octyldodecyl myristate, ethylhexyl stearate, ethyl linoleate, isopropyl linoleate, octyldodecyl neopentanoate, butyl myristate, butyl stearate, cetyl ethylhexanoate, ethyl oleate, hexyldecyl isostearate, isocetyl myristate, isostearyl myristate, isocetyl stearate, ethylhexyl palmitate, isononyl isononanoate, and isotridecyl isononanoate. The number of carbon atoms in the fatty acid is in the range of 8 to 18, preferably 8 to 18, more preferably 10 to 18, and even more preferably 12 to 18. Furthermore, the fatty acid is preferably a saturated fatty acid. The number of carbon atoms in the monohydric alcohol is in the range of 5 to 20, preferably 8 to 18, more preferably 10 to 18, and even more preferably 12 to 16. Furthermore, the monohydric alcohol is preferably composed of a saturated carbon chain and a hydroxyl group bonded to the carbon chain.

[0038] As the surfactant, a nonionic surfactant is preferred. Among nonionic surfactants, ester-type surfactants of fatty acids and polyhydric alcohols, such as sorbitan fatty acid esters, and ether-type surfactants, such as polyoxyethylene alkyl ethers and polyoxypropylene alkyl ethers, are preferred. The surfactant may also be anionic, cationic, or amphoteric. By adding a surfactant, the contact angle of the glass pest control composition can be increased.

[0039] Preferred UV absorbers include benzotriazole-based UV absorbers such as 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, 2-[2-hydroxy-3,5-di-ter-pentylphenyl]benzotriazole, 2-[3,5-bis(1-methyl-1-phenylethyl)-2-hydroxyphenyl]-2H-benzotriazole, and bis[3-(benzotriazole-2-yl)-2-hydroxy-5-tert-octylphenyl]methane.

[0040] As the aforementioned light stabilizer, bindered amine-based light stabilizers such as bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, methyl(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, and bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate are preferred.

[0041] The aforementioned film-forming agent is preferably a silicone-based film-forming agent containing a silicone group in its structure, or an acrylic-based film-forming agent containing (meth)acrylic acid or (meth)acrylic acid ester in its structure, with alkyl acrylate copolymer methylpolysiloxane ester being particularly preferred.

[0042] As the silicone oil, for example, dimethylpolysiloxane with a degree of polymerization of 9 or higher is preferred.

[0043] The content of the additive is, for example, 0.05 to 5% by mass relative to the total mass of the glass pest control composition. Since the contact angle of the glass pest control composition may increase with the addition of various additives, in such cases, the contact angle can be reduced by using a solvent with a high evaporation rate. Conversely, since the contact angle of the glass pest control composition may decrease with the addition of various additives, in such cases, the contact angle can be increased by using a solvent with a low evaporation rate.

[0044] Next, an embodiment of the present invention of a glass pest control spray will be described, with an aerosol example.

[0045] The aerosol of this embodiment is filled with a spray agent containing the glass pest control composition and liquefied gas. The spray agent may contain compressed gas instead of liquefied gas.

[0046] The aerosol typically comprises a pressure-resistant container filled with the spray agent, a valve mechanism for discharging the spray agent from a nozzle, and a spray button having a nozzle. The valve mechanism includes an opening / closing member that enables communication between the inside and outside of the pressure-resistant container, a housing that houses the opening / closing member, and a mounting cup for holding the housing in a predetermined position on the pressure-resistant container. The opening / closing member includes a stem that slides in conjunction with the spray button, and a stem hole is provided at the top of the stem. The housing also has a housing hole. When the user operates the spray button, the stem slides, causing the spray agent to pass through the housing hole and the stem hole before being sprayed from the nozzle.

[0047] The aerosol is preferably configured such that the particle size (D50) of the sprayed particles at a position 40 cm from the spray nozzle is 5 to 70 μm, and more preferably 5 to 55 μm. The particle size can be measured by laser diffraction / scattering. Specifically, an AeroTrac particle size analyzer is used, with the focal length set to 10 cm. Alternatively, the aerosol can be left to stand in a 25°C water bath for 1 hour, and then the spray agent is sprayed from the aerosol and measured.

[0048] The particle size can be changed by adjusting the volume ratio of the glass pest control composition and the liquefied gas. Specifically, the particle size can be reduced by increasing the proportion of the liquefied gas.

[0049] The volume ratio of the glass pest control composition and the liquefied gas can be adjusted, for example, to a range of 20:80 to 80:20, and preferably to a range of 20:80 to 60:40.

[0050] The amount of the aerosol composition sprayed is usually 0.1 to 5.0 g per square meter of glass, preferably 1.0 to 4.0 g, and more preferably 1.5 to 3.0 g.

[0051] As described above, while exemplary embodiments have been presented, the glass pest control composition and glass pest control spray according to the present invention are not limited to the configurations of the above embodiments. Furthermore, the glass pest control composition and glass pest control spray according to the present invention are not limited by the effects described above. The glass pest control composition and glass pest control spray according to the present invention can be modified in various ways without departing from the spirit of the present invention.

[0052] For example, the insect-repellent spray for glass according to the present invention may be a trigger spray. [Examples]

[0053] The present invention will be further described below with reference to examples, but the present invention is not limited thereto.

[0054] Glass pest control compositions were prepared according to the formulations shown in Tables 1 to 4 below. Each glass pest control composition (each example and each comparative example) was free from clouding. The contact angle of each glass pest control composition was measured according to the measurement method described above.

[0055] [Transparency evaluation of glass] Each prepared insecticide composition for glass is filled into an aerosol container with liquefied petroleum gas according to the specifications shown in Table 5 below. The aerosol container is stored at 25°C for at least one hour. The spray is applied to the surface of soda-lime glass (manufactured by Kenis Co., Ltd., glass plate, 2.0 mm thick, 100 x 100 mm) from a distance of 40 cm. The glass is held up to an LED light source (color tone 5000K, brightness 5200 lm) at a distance of 1.5 m, and the surface is visually observed and evaluated according to the evaluation criteria below. The results are shown in Tables 1 to 4. (Evaluation Criteria) Score 4: No dullness or cloudiness is visible. Score 3: The percentage of area showing dullness or cloudiness is less than 20%. Score 2: 20-50% of the area shows signs of dullness or cloudiness. Score 1: 50-100% of the area shows dullness or cloudiness.

[0056] [Table 1]

[0057] [Table 2]

[0058] [Table 3]

[0059] [Table 4]

[0060] Table 5

Claims

1. A glass pest control composition having a contact angle of 4.0 to 8.0° with respect to glass at 25°C.

2. A glass pest control composition having a contact angle of 5.0 to 8.0° with respect to glass at 25°C.

3. A glass pest control composition having a contact angle of 5.2 to 8.0° with respect to glass at 25°C.

4. The vapor pressure at 25°C is 1.33 × 10⁻⁶ －３ A glass pest control composition according to any one of claims 1 to 3, comprising a non-volatile insect control component with a Pa of less than volatilization.

5. The glass pest control composition according to claim 4, wherein the non-volatile insecticidal component is a pyrethroid compound.

6. A glass pest control composition according to any one of claims 1 to 3, comprising one or more solvents selected from the group consisting of alcohol-based solvents and hydrocarbon-based solvents.

7. A glass pest control composition according to any one of claims 1 to 3, comprising one or more additives selected from the group consisting of fatty acid esters, surfactants, ultraviolet absorbers, light stabilizers, film-forming agents, and silicone oils.

8. A glass pest control spray, which is filled with the glass pest control composition according to any one of claims 1 to 3.

9. The insecticide spray for glass according to claim 8, configured such that the particle size (D50) of the sprayed particles at a distance of 40 cm from the spray nozzle is 5 to 70 μm.

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