JP3347517B2 - Aerosol insecticide for application and insecticidal method using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol insecticide for application which is suitable for controlling large and small resident pests such as cockroaches, and an insecticide method using the same.

[0002]

2. Description of the Related Art As a method of controlling house pests,
A method of spraying an insecticide, a method of using a catcher including an adhesive tape, and the like are known. The former spray type,
For example, aerosol insecticides are easy to use and widely used, but when sprayed on an inclined surface, the chemical solution easily flows, and when sprayed on plywood or cloth, insecticide components penetrate inside. There is a problem that the insecticidal effect is reduced. On the other hand, the method using a trap has no effect on preventing the generation and proliferation of pests, and has a problem that only a part of the pests in the home can be eliminated.

For the purpose of solving the former problem of the aerosol insecticide, for example, Japanese Patent Application Laid-Open No. 56-167601 discloses that an aerosol itself forms a solid at room temperature so that the insecticide component remains on the coated surface. An aerosol-type insecticidal-insecticidal composition containing a non-polar substance which precipitates as a solid when sprayed from an aerosol is proposed. Examples of the non-polar substance include cyclodecane, naphthalene, and solid paraffin.However, it is difficult to control the state of precipitation, which causes clogging of the nozzle during spraying, and also improves the residual effect. But it was not satisfactory.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to an insecticide used for controlling livestock pests such as cockroaches even when sprayed on an inclined surface, a plywood, a cloth, or the like. It can stay for a long time, has excellent after-effect,
Moreover, the object of the present invention is to provide an aerosol insecticide for application which does not cause problems such as excessive stickiness and spots, and an insecticidal method using the same.

[0005]

Means for Solving the Problems In order to achieve the above object, the present inventors have conducted intensive studies and found that a higher fatty acid ester-based compound such as butyl stearate, ethyl oleate and oleate was contained in an insecticidal stock solution containing an insecticidal component. It has been found that an aerosol for application having excellent residual effect can be prepared by blending one selected from butyl acid.

That is, the invention of claim 1 comprises (a) a pyrethroid insecticidal component or a pyrethroid-like insecticidal component of 0.05
10% by weight, (b) a kind selected from butyl stearate, ethyl oleate and butyl oleate 1.0 to 1.0%
30% by weight, (c) 60-99% by weight of paraffinic solvent
Insecticidal solution containing as a main component 30 to 55% by weight
And an aerosol insecticide for application in which an aerosol container is filled with a liquid content of 45 to 70% by weight of a propellant.

As the insecticidal component used in the present invention, a pyrethroid insecticide or a pyrethroid-like insecticide can be mentioned from the viewpoint of efficacy and safety. For example, phenothrin, cyphenothrin, allethrin, phthalthrine,
Resmethrin, framethrin, pramethrin, permethrin, cypermethrin, etofenprox, silafluofen, imiprosulin and the like can be exemplified, but not limited thereto, when optical isomers or geometric isomers are present, Of course, each as well as any mixtures are encompassed. In the present invention, one or more of these pesticidal components are blended in the pesticidal solution in an amount of 0.05 to 10% by weight, but other types of pesticidal components, for example, organophosphorus agents, carbamate agents, insect growth agents A multipurpose composition can also be prepared by appropriately mixing a disturbing agent, a repellent, a bactericide, a fungicide, a synergist, a stabilizer, a fragrance and the like.

According to the present invention, a paraffinic solvent is used as the solvent for the insecticidal stock solution from the viewpoint of safety and odorlessness, and the higher fatty acid ester compounds butyl stearate, ethyl oleate and oleic acid are contained in the insecticide stock solution. It is characterized in that one kind selected from butyl is blended. These additives are usually compounded in the insecticidal solution at a ratio of 1.0 to 30% by weight.
It is appropriately determined according to the spray amount, the purpose of use, and the like.

The aerosol insecticide for application according to the present invention comprises 30 to 55% by weight of the thus obtained insecticide stock solution,
It is prepared by filling an aerosol container with a content liquid consisting of 70% by weight. Examples of the propellant include liquefied petroleum gas such as propane and butane, dimethyl ether, chlorofluorocarbon gas, carbon dioxide gas, and nitrogen gas. Usually, liquefied petroleum gas or a mixed gas of liquefied petroleum gas and dimethyl ether is used. .

[0010] The invention of claim 2 provides (1) a pyrethroid insecticidal component or a pyrethroid-like insecticidal component of 0.05 to 10% by weight, and (b) butyl stearate, ethyl oleate and butyl oleate. And 30 to 55% by weight of an insecticidal stock solution containing 0.0 to 30% by weight of a paraffinic solvent as a main component, and 45 to 70% by weight of a propellant. It is an object of the present invention to provide an insecticidal method in which an aerosol insecticide is sprayed on an application surface and the residual effect of the applied insecticide is enhanced.

[0011]

According to the first aspect of the present invention, an extremely useful aerosol insecticide for application is provided, and a pyrethroid insecticide or a pyrethroid-like insecticide, higher fatty acid ester compounds such as butyl stearate, ethyl oleate and butyl oleate are provided. And a paraffin-based solvent, which greatly contribute to improving the residual effect of the insecticidal component on the coated surface. Heretofore, the use of higher fatty acid ester-based compounds has been generally performed in water-based aerosol insecticides, but there is no finding that a combination with a paraffin-based solvent is particularly useful in enhancing the residual effect. It is new. In addition, in the insecticidal solution, other types of solvents, for example, ethanol, alcohols such as isopropanol, acetone, as long as the properties are not impaired,
Needless to say, ketones such as methyl ethyl ketone, aromatic hydrocarbon solvents, naphthene solvents and the like may be added as appropriate.

According to a second aspect of the present invention, the composition contains a pyrethroid insecticide or a pyrethroid-like insecticidal ingredient, a higher fatty acid ester compound selected from butyl stearate, ethyl oleate and butyl oleate, and a paraffinic solvent. By using an insecticide solution and an aerosol insecticide for application filled with a content liquid consisting of a propellant,
Provided is an insecticidal method capable of enhancing the residual effect of an insecticidal component sprayed and applied to an application surface.

The content liquid used in the present invention is filled in an aerosol container. The structure of the aerosol container is composed of a pressure-resistant container and an injection valve, similarly to a conventional spray aerosol, and the shape of the nozzle is appropriately determined according to the application. You can choose. For example, to adjust the ejection amount by the liquid passages in the nozzle helically, is convenient and easy to use if raise, forward injection type by loading the side buttons more container side is provided an injection port on the top surface.

The aerosol insecticide for application according to the present invention is excellent in spraying performance and usability, and can be applied to a kitchen, a living room, a door, a window sash, a wall, etc. in a house. Regardless of the inclination of the surface or the liquid absorbing property of the material, it has high and long lasting control and prevention effects against cockroaches, ants, mites, bedbugs, various pests, and insecticide using this The method is very practical.

Now, the present invention will be described in further detail with reference to Examples and Test Examples.
It is not limited to the following example.

[0016]

EXAMPLE 1 0.2 g of cyphenothrin as an insecticidal component and d-T80
-0.87 g of phthalsuline and 4.0 g of butyl stearate were added with 67.7 g of odorless kerosene, and the total amount was 90 m
1 (72.2 g) of a stock solution of insecticide was prepared. In addition, the content of each component in the insecticidal stock solution was cyphenothrin 0.1%.
The content was 28% by weight, d-T80-phthalthrine 1.1% by weight, and butyl stearate 5.5% by weight. 90 ml (72.2 g) of this insecticidal stock solution was filled into a 300 ml pressure-resistant aerosol container, and after the injection valve was charged, 210 ml (117.6 g) of injection gas (liquefied petroleum gas) was press-fitted and the aerosol insecticide for application of the present invention was applied. I got When this insecticide was applied to kitchen floors, plywood cupboards and the like, it showed a sufficient control and repellent effect against pests such as cockroaches, and the efficacy was maintained for 6 months or more.

[0017]

[Test Example] Test Example 1 A test was conducted using the aerosol insecticide for application of the present invention obtained according to Example 1. A 20 cm square glass plate was erected with an angle of inclination of 60 ° and the aerosol insecticide was applied to the glass plate from a distance of 35 cm.
Sprayed for seconds. After standing for 30 seconds, the treated glass plate was returned to the flat plate and stored at room temperature. After 1 week and 2 weeks, 30 female German cockroaches were placed on a treated glass plate.
After creeping for a time, it was transferred to a breeding container, and the mortality after 72 hours was examined. In addition, the state of the glass plate surface at the time of each test was also observed and indicated by the following evaluation. ○… Wet condition (no excessive stickiness) ×… Dry condition

[0018]

[Table 1]

As a result of the test, the aerosol insecticide for application according to the present invention shows that even when sprayed on an inclined glass plate, the added higher fatty acid ester compound butyl stearate,
The insecticidal component was allowed to remain on the coated surface by a kind of action selected from ethyl oleate and butyl oleate, which was extremely effective in improving the residual effect. This effect
As shown in Comparative Example, liquid paraffin was not observed, and the effect was inferior when ethanol was used as the solvent, so that it was selected from higher fatty acid ester compounds such as butyl stearate, ethyl oleate and butyl oleate. It has been confirmed that the compound can be obtained only by combining one of them with a paraffin-based solvent. In order to increase the residual effect, it is necessary to maintain a certain degree of wetness, but as shown in the example of liquid paraffin, even if wet, it does not necessarily show insecticidal efficacy, The properties of the fatty acid ester compounds selected from butyl stearate, ethyl oleate and butyl oleate and the paraffin-based solvent mixture are considered to be related to the improvement of skin penetration of insecticidal components into insects. .

[0020]

The aerosol insecticide for application of the present invention has a high residual effect because the insecticidal component can remain on the application surface for a long period of time, and is excellent in sprayability and usability. Extremely useful.

According to the second aspect of the present invention, there is provided an insecticide method capable of increasing the residual effect of the insecticide sprayed and applied to the application surface by using the aerosol insecticide for application according to the first aspect.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01N 25/06 A01N 25/02 A01N 25/30

Claims (2)

(57) [Claims] 1. A pyrethroid insecticidal component or a pyrethroid-like insecticidal component of 0.05 to 10% by weight, and (B) 1.0 to 30% by weight of butyl stearate, ethyl oleate and butyl oleate. %, (C) a paraffinic solvent of 60 to 99% by weight, a pesticidal solution containing 30 to 55% by weight as a main component, and a propellant of 45 to 70% by weight.
An aerosol insecticide for application, wherein a content liquid consisting of the following is filled in an aerosol container. 2. A) a pyrethroid insecticidal component or a pyrethroid-like insecticidal component, 0.05 to 10% by weight, and (b) 1.0 to 30% by weight of one selected from butyl stearate, ethyl oleate and butyl oleate. A) aerosol insecticide for application filled with a liquid content consisting of 30 to 55% by weight of an insecticidal stock solution containing 60 to 99% by weight of a paraffinic solvent as a main component and 45 to 70% by weight of a propellant. A pesticidal method characterized by enhancing the residual effect of the insecticidal component sprayed and applied to the application surface.