JP2002316906A - Aerosol agent for exterminating cockroach - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aerosol agent for exterminating cockroaches, having a high instantaneous effectiveness against the cockroaches, and further an instantaneous effectiveness-accelerating agent improving a knockdown effectiveness of imiprothrin as an active ingredient for exterminating the cockroaches. SOLUTION: This aerosol agent for exterminating the cockroaches is characterized by containing the imiprothrin and a citrine-based plant extract. The effectiveness-accelerating agent for the imiprothrin is characterized by using the citrine-based plant extract as an active ingredient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol for controlling cockroaches, and more particularly to an aerosol for controlling cockroaches having high immediate efficacy, and an agent for enhancing potency of imiprothrin.

[0002]

2. Description of the Related Art As active ingredients used for controlling cockroaches, many compounds including pyrethroid compounds have been developed. In recent years, among these, imiprothrin has been found to be effective in controlling cockroaches, and has been put to practical use as an aerosol. However, this compound is not always sufficient for immediate action against cockroaches, and in an aerosol where immediate action is required,
At present, various means are being studied to improve this point.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is an aerosol agent for controlling cockroaches having a high immediate effect on cockroaches, and an active ingredient for controlling cockroaches. An object of the present invention is to provide an efficacy enhancer that enhances the knockdown efficacy of imiprotrin.

[0004]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above-mentioned problems can be achieved by using an aerosol containing imiprothrine and an extract of a citrus plant in combination, and that extraction of a citrus plant is achieved. It has been found that the compound acts as an enhancer of knockdown efficacy of imiprotrin against cockroaches, and the present invention has been accomplished.

That is, the present invention has the following constitution. (1) An aerosol for controlling cockroaches, comprising imiprothrine and an extract of a citrus plant. (2) An imiprothrine potency enhancer comprising an extract of a citrus plant as an active ingredient.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The aerosol for controlling cockroaches (hereinafter also referred to as aerosol) of the present invention is imiprothrine (that is, 2,4-dioxo-1- (2-propynyl)).
Imidazolidine-3-ylmethyl chrysanthemate)
And an extract of a citrus plant (hereinafter, also referred to as an extract) in combination, and sprayed directly onto the cockroach to use, thereby improving the immediate effect (knock down effect) on the cockroach. The extract acts as an efficacy enhancer to enhance the knockdown efficacy of imiprotrin. The efficacy enhancer may be applied to other than the aerosol as long as the effect of the invention is exerted. For example, the efficacy enhancer may be a liquid, a spray, a full spray aerosol, or the like. The content of imiprothrine in the aerosol is preferably 0.05 to 5% by weight based on the total amount, more preferably 0.1 to 5% by weight.
The content is preferably 0.1% by weight.

[0007] The extract includes oils extracted from citrus plants such as mandarin orange, navel orange, grapefruit and lemon; d-limonene, dl
Limonene, such as limonene, l-limonene; linalool;
Nonyl alcohol; citral; n-decylaldehyde; d-terpineol, and one or a mixture thereof can be used. Among them, orange oil and limonene are preferable, and oil obtained from navel orange is more preferable. The content of the extract in the aerosol is preferably from 0.2 to 2.5% by weight, more preferably from 0.5 to 1% by weight, based on the total amount. Thereby, the action of imiprotrin as an effect enhancer can be sufficiently obtained.

[0008] The extract is usually prepared by weight ratio of imiprotoline 1
Is preferably contained so as to be 1 to 13. If the amount of the extract is too small, sufficient immediate effect cannot be obtained, and if the extract is too large, the knockdown effect reaches equilibrium, which is not preferable. In order to prepare an aerosol, a stock solution is prepared by using an appropriate carrier in addition to the above-mentioned compounds and the like, and then filled in a pressure-resistant can (aerosol can) or the like using general-purpose means together with a propellant under appropriate pressurizing conditions. . In this case, the content of the undiluted solution is preferably from 10 to 60% by weight, more preferably from 25 to 40% by weight, based on the total amount of the aerosol. The content of the propellant is preferably 40 to 90% by weight, and more preferably 60 to 75% by weight based on the total amount.

Examples of the carrier include water; alcohols such as isopropyl alcohol, ethanol, and denatured alcohol; glycols such as propylene glycol and ethylene glycol; pentanes such as isopentane and normal pentane; and paraffinic carbonized such as isoparaffin and normal paraffin. Liquid carriers such as hydrogen can be used alone or in combination of two or more. As the propellant, a liquefied gas such as liquefied petroleum gas, dimethyl ether, difluoromonochloroethane, or the like; or a compressed gas such as carbon dioxide, nitrogen, or compressed air can be used alone or in combination of two or more.

[0010] The aerosol may contain an insecticide, a repellent, a solubilizing agent, and the like, if necessary, as long as the effects of the present invention are exhibited. Specifically, pyrethroid compounds such as natural pyrethrin, allethrin, resmethrin, framethrin, prarethrin, terarethrin, phthalthrin, phenothrin, permethrin, cyphenothrin, cypermethrin, transfluthrin, imiprotrin, empentrin, etfenprox; propoxer;
Carbamate compounds such as carbaryl; organic phosphorus compounds such as fenitrothion and DDVP; oxadiazole compounds such as methoxadiazon; insecticidal essential oils such as fittintide, peppermint oil, orange oil, cinnamon oil and clove oil;
IBTA; IBTE; IPBC; quaternary ammonium salts; benzoic acid esters; insecticides such as benzyl salicylate; repellents such as diethyltoluamide, di-n-butylsuccinate, di-n-propylisocincomeronate, hydroxyanisole Dissolving aids such as lactate esters; polyvinylpyrrolidone; carbonate esters; nonionic surfactants; cationic surfactants; anionic surfactants; and amphoteric surfactants.

Further, if necessary, the composition may contain a suitable bactericide, deodorant, fragrance, fine-granulating agent and the like. Specifically, germicides such as PCMX, IPBC, and isopropylmethylphenol; deodorants such as lauryl methacrylate, geranyl crotonate, and acetophenone myristate; rose oil, lavender oil, bergamot oil, cinnamon oil, citronella oil, and lemon oil , Essential oils such as peppermint oil; pinene;
Aroma substances such as limonene, linalool, menthol, eugenol, isoeugenol, citral, citronellal, vanillin, and borneol; mixtures thereof; fragrances such as glycosides; volatile silicon; alcohols such as isopropyl alcohol and denatured alcohol And the like.

[0012] In addition, by adding powder to the aerosol, it is possible to increase the residual effect of the above-mentioned compounds and the like on the sprayed surface and to increase the frequency of contact with cockroaches, thereby increasing the lethal effect after spraying. it can. Methoxadiazone, cyphenothrin, which is highly lethal to cockroaches,
Phenothrin, permethrin, etofenprox,
When an insecticide such as resmethrin is contained, powder is preferably used. Examples of the powder include inorganic powder such as silicic anhydride, silica gel, talc, white carbon, and diatomaceous earth; and organic powder such as polyethylene resin, styrene resin, and silicone resin. The content of powder in the aerosol,
It is preferably from 0.2 to 2% by weight, more preferably from 0.5 to 1% by weight, based on the total amount.

The aerosol agent for controlling cockroaches of the present invention can be used for male and female cockroaches such as German cockroaches, cockroaches, black cockroaches, and black cockroaches, adults and larvae.

[0014]

(Immediate action against cockroaches)

(1) Test method The aerosols described in Table 1 were prepared. Then, one female cockroach female was placed in a cup (diameter 12 cm, height 10 cm), and an aerosol was sprayed for 1 second from a distance of 50 cm. Then, the time (second) until the cockroach knocked down was measured. The test was repeated five times, and the average value of the knockdown time was determined. Further, the cockroach was transferred to another cup containing food and death was confirmed 24 hours later.

[0015]

[Table 1]

(2) Test results The test results are shown in Table 2. In Examples 1 and 2 containing orange oil, it was clarified that the knockdown time was significantly reduced as compared with Comparative Example 1 not containing orange oil, and high immediate effect was obtained.

As a reference example, the same test was carried out by replacing imiprothrin of Example 1 with cypermethrin, and it was found that the knockdown time was shorter than that of Reference Example 1 using orange oil and Reference Example 2 not using it. I couldn't. In addition, the same test was performed by replacing imiprothrin in Example 1 with cyphenothrin, but no reduction in the knockdown time was observed as in the case of cyphenothrin. The aerosols obtained in Examples 1 and 2 except for imiprothrin had no knockdown effect on cockroaches, and no lethality was observed 24 hours later. Therefore, it was presumed that such an effect by orange oil was specifically exhibited in imiprothrine.

[0018]

[Table 2]

Hereinafter, specific examples of the aerosol of the present invention will be described, but the present invention is not limited thereto. (1) Aerosol for cockroach control (stock solution) Imiprothrin 1 g Methoxadiazon 0.5 g Orange oil 4 g Ethanol 6 ml No. 1 kerosene 70 ml (Propellant) Liquefied petroleum gas 115 ml Dimethyl ether 115 ml

(2) Cockroach control aerosol (stock solution) Imiprothrin 1 g Methoxadiazon 0.5 g Orange oil 4 g Ethanol 6 ml Silica anhydride 0.8 g No. 1 kerosene 70 ml (Propellant) Liquefied petroleum gas 115 ml Dimethyl ether 115 ml

[0021]

By using the aerosol for controlling cockroaches of the present invention directly sprayed onto cockroaches, the immediate effect (knockdown effect) on cockroaches can be enhanced. In addition, the potency enhancer of the present invention can specifically enhance the knockdown potency of imiprotrin against cockroaches.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4H011 AC02 BA01 BA06 BB15 BB22 BC01 BC03 BC18 DA21 DD05 DE15 DF04 DG08

Claims (2)

[Claims] 1. An aerosol for controlling cockroaches, comprising imiprothrine and an extract of a citrus plant. 2. An imiprothrine potency enhancer comprising an extract of a citrus plant as an active ingredient.