JP2005314349A - Anti-cockroach spray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel anti-cockroach spray which exhibits a quick insecticidal effect on cockroaches when sprayed onto as desired place. <P>SOLUTION: The anti-cockroach spray is one containing an insecticidal component and a powder, wherein it is sprayed so that at least 5 mg of the powder may be sprayed per 10 seconds together with the insecticidal component. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a spray product for cockroaches which is suitable for spray application to a desired place and exhibits an instant insecticidal effect on cockroaches.

  Insecticidal aerosols have been used to combat cockroaches. In order to quickly kill cockroaches, the development of new insecticidal components and the combined use of insecticidal components and synergists are being investigated. For example, it is known to increase the knockdown effect against pests by using a mixture of imiprotorin, a certain aromatic hydrocarbon and kerosene as a solvent (see, for example, Patent Document 1).

These are based on the premise that they are directly sprayed against pests, and if they are sprayed and applied in advance to the intended place, a sufficient insecticidal effect cannot be obtained. Studies have been conducted on suitable insecticidal aerosols (see, for example, Patent Document 2).
Japanese Patent No. 2782821 (page 1-4) JP-A-8-259404 (page 1-5)

  Conventional insecticide aerosols used for spray application are not effective because they are intended to increase the residual effect of insecticidal effects, and the sprayed insecticide and cockroaches must be in contact for a certain period of time. I couldn't kill it. For this reason, there were problems with the cockroaches that were active, such as not being able to obtain a sufficient insecticidal effect or feeling uncomfortable because of the time it took to kill the insects.

  Accordingly, the present invention aims to provide a novel cockroach spray product that solves the above-described problems and exhibits an immediate insecticidal effect on cockroaches when spray applied to a desired location. To do.

As a result of intensive studies to achieve the above-mentioned object, the present inventors have sprayed a predetermined amount of powder together with an insecticidal component so that it can be used against a cockroach when sprayed and applied to a desired place. The present invention was found out that an immediate insecticidal effect was achieved. That is, the present invention comprises the following cockroach spray products.
(1) A cockroach spray product containing an insecticidal component and a powder, wherein the powder is sprayed in an amount of 5 mg or more per 10 seconds together with the insecticidal component.
(2) The cockroach spray product according to (1), wherein the insecticidal component is imiprotorin, or imiprotorin and methoxadiazone.
(3) The spray product for cockroaches according to (1) or (2), which contains a plant extract and is sprayed together with an insecticidal component and powder.

  The spray product for cockroaches of the present invention exhibits an immediate insecticidal effect against cockroaches when used by spray application to a desired place. Furthermore, even if it sprays directly toward the cockroach, it has a sufficient insecticidal effect. In particular, the combined use of imiprothrin and methoxadiazone as insecticidal components provides an excellent flushing-out effect and insecticidal effect against cockroaches hidden when sprayed into the gap.

The cockroach spray product of the present invention (hereinafter also referred to as “spray product”) is an aerosol container comprising a stock solution containing a pesticide component and powder and a propellant filled in an aerosol container equipped with an injection mechanism. It is. Then, together with the insecticidal component, the ratio of the stock solution and the propellant, the injection mechanism such as the nozzle, valve, and stem, the pressure in the aerosol container, etc. are adjusted so that 5 mg or more of powder is injected per 10 seconds. The powder to be sprayed here may be either a stock solution adsorbed or not adsorbed. Moreover, what filled the spray solution provided with the manual injection mechanism with the undiluted | stock solution used for the said aerosol form may be used. In either case, if the powder is sprayed too much, dirt (whitening) at the place where the spray is applied may be noticeable, or the spray mechanism may be clogged and the spray mechanism may be affected. It is good to adjust so that it may spray 5-100 mg per hit.
The spray product of the present invention is preferably in the form of an aerosol capable of easily injecting the contents uniformly over a wide range from the application scene and deep into the gap.

  In the spray product of the present invention, in the case of an aerosol form, the stock solution is 20 to 40 volume / volume% (hereinafter also referred to as “v / v%”) and the propellant is 60 to 80 v /% with respect to the total amount of the aerosol contents. It is good to contain so that it may become v%.

  The pressure (internal pressure) in the aerosol container is preferably about 0.3 to 0.5 MPa under 25 ° C conditions.

  Further, as the injection mechanism, the nozzle diameter is about 0.6 to 1.0 mm, the stem diameter is about 0.3 to 1.2 mm, the under tap diameter is about 1.0 to 2.2 mm, and the vapor tap diameter is about 0.3 to 2.2 mm. It is preferable to use a valve or the like. There is no need for a vapor tap.

  Examples of insecticidal components used in the present invention include natural pyrethrin, praretrin, imiprothrin, phthalthrin, allethrin, transfluthrin, resmethrin, phenothrin, ciphenothrin, d, d-T99-cyphenothrin, permethrin, cypermethrin, etofenprox, cyfluthrin, Pyrethroid compounds such as deltamethrin, bifenthrin, fenvalerate, fenpropraslin, silafluophene, metfurflurin, profluthrin, S-1864 (manufactured by Sumitomo Chemical Co., Ltd.), organophosphorus compounds such as dichlorvos, carbamate compounds such as propox, methoxadiazone, etc. Oxadiazole compounds, sulfonamide compounds such as amidoflumet, nicotinoid compounds such as dinotefuran, metoprene, hydro Ren, insect growth regulating compounds such as pyriproxyfen, chlorfenapyr, fipronil, S-1991 (manufactured by Sumitomo Chemical Co., Ltd.), these isomers, derivatives, and the like. Among these, it is preferable to use imiprotorin, which has a high insecticidal effect against cockroaches. Pral (Imiprothrin 50% -containing solution; manufactured by Sumitomo Chemical Co., Ltd.) may also be used. Further, when imiprothrin or pral and methoxadiazone are used in combination, an excellent flushing-out effect and insecticidal effect may be obtained. In this case, it is preferable that imiproton: methoxadiazone is 1: 1 to 2: 1 by weight. In addition, what is necessary is just to adjust the usage-amount so that it may become said weight ratio, when using a pll.

  These may be used alone or in combination of two or more, and 0.1 to 1.0% by weight / volume% (hereinafter also referred to as “w / v%”), preferably based on the total amount of the aerosol contents It is good to contain 0.3-0.6 w / v%.

  Examples of the powder of the present invention include inorganic powders such as silicic anhydride, silica gel, talc, white carbon, diatomaceous earth, and organic powders such as polyethylene resin, polystyrene resin, and silicone resin. Among these, it is preferable to use silicic acid anhydride having an oil absorption of 100 to 200 ml / 100 g and an average particle diameter of less than 5 μm in order to reduce dirt (whitening) at a spray-coated place. As such, for example, Sunsphere L-31, Sunsphere H-31, Sunsphere H-52, Sunsphere H-32, Sunsphere L-51 (all of which are manufactured by Dokai Chemical Industries, Ltd.) Is mentioned.

  These powders can be used singly or in combination of two or more, and if they can be used by spraying 5 mg or more per 10 seconds together with the insecticidal component, the content is not limited. It is good to contain so that it may become 0.1-0.5 w / v% with respect to the whole quantity of the content, Preferably it is 0.1-0.3 w / v%.

  Solvents used for preparing the stock solution of the present invention include water, aromatic hydrocarbons such as alkylbenzene, kerosene, saturated hydrocarbons such as paraffinic hydrocarbons and naphthenic hydrocarbons, unsaturated hydrocarbons such as octene, isopropyl Alcohols such as alcohol, ethyl alcohol, oleyl alcohol, lauryl alcohol, esters such as isopropyl myristate, glycols such as polyethylene glycol and polypropylene glycol, ethers such as alkylphenyl ether, chlorinated solvents such as dichloromethane, fluorine-based solvents Examples include solvents, silicone solvents, carboxylic acid ester solvents such as dibutyl phthalate, isopropyl palmitate, isopropyl myristate, and hexyl laurate.

  Examples of the propellant include nitrogen gas, compressed air, compressed gas such as carbon dioxide gas, hydrofluorocarbon such as HFC-152a and HFC-134a, liquefied gas such as dimethyl ether, liquefied petroleum gas such as propane, butane, and isobutane, normal Examples include pentane such as pentane, isopentane, and cyclopentane, and one or a mixture of two or more thereof can be used.

  Furthermore, in the spray product for cockroaches of the present invention, orange oil, terpeneless orange oil, mint oil, eucalyptus oil, linalool, citral, citronella oil, geranium oil, d-limonene, L-menthol, 1,8-cineole, α- Use of one or more plant extracts such as pinene, cinnamic aldehyde, eugenol, turpentine oil, hiba oil, cinnamon oil, clove oil, sesame oil, perilla oil, etc., to improve the attracting and insecticidal effects on cockroaches It can also be made. Among these, orange oil, turpentine oil, perilla oil, cinnamon oil, eucalyptus oil, sesame oil, linalool, citral, mint oil, d-limonene, and α-pinene may improve the effects of the invention.

  These can be used singly or in combination of two or more, containing 0.1 to 3.5 w / v%, preferably 0.5 to 1.5 w / v%, based on the total amount of aerosol content It is good to do.

  In addition, when orange oil is used in combination with imiproton, there is also a specific effect that the stimulation by imiproton is alleviated. In this case, the weight ratio of imiproton and orange oil is used as 1: 1 to 1: 2. It is good.

  The spray product for cockroaches of the present invention is optionally provided with a surfactant such as POE alkyl ether and POE fatty acid ester; a solubilizing agent such as lactic acid ester, polyvinyl pyrrolidone and propylene carbonate; piperonyl butoxide and N-octyl. Efficacy enhancers such as bicycloheptene dicarboximide (MGK264), 1,1′-oxybis [2,3,3,3-tetrachloropropane] (S421); spreading agents such as lanolin; pentanes, 2,3- Cooling numbing agents such as dihydrodecafluoropentane (trade name, Bertrell XF, Mitsui DuPont Fluoro Chemical Co.); deodorants such as polyphenols and lauryl methacrylate; You may contain.

  The spray product for cockroaches of the present invention can control cockroaches such as German cockroaches, black cockroaches, Yamato cockroaches, and American cockroaches.

  The spray product for cockroaches of the present invention is sprayed on the floor, flooring, furniture, tiles, carpets, home appliances, closets, under the floor, under the ceiling, and places where cockroaches are active such as gaps between furniture and home appliances and walls and floors. Suitable for application and use.

In addition, the spray application amount per unit area of the powder sprayed together with the insecticidal component is adjusted to the spray time and the spray amount so as to be about 40 to about 550 mg / m ² . In addition to having an immediate insecticidal effect, dirt (whitening) at the place where the spray is applied may be inconspicuous.

  EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to these examples.

Test example 1
The spray product for cockroaches described in Table 1 (capacity 300 ml, nozzle diameter 0.8 mm, stem 0.45 mm × 2, under tap 2.2 mm, vapor tap 0.3 mm, internal pressure 0.4 Mpa) was prepared. Each spray product was sprayed on a decorative board (15 cm × 15 cm) for 1 second from a distance of about 20 cm. One day later, a plastic cup (diameter 12 cm, height 10 cm) was placed on the decorative plate, and 6 black cockroaches or 10 resistant German cockroaches were released, and the cockroaches were brought into contact with the decorative plate for a predetermined time. . Thereafter, the cockroach was transferred to a clean plastic cup, and the lethal time was measured. From the result, LT50 (contact time (minute) at which 50% of cockroaches were lethal) was calculated. The test was repeated three times and the average value was calculated.

  As shown in Table 2, the result of the test was confirmed that the spray product for cockroaches of the present invention exerted an instant insecticidal effect on cockroaches when spray applied. This effect was also confirmed against resistant cockroaches. In Examples 1 and 2, when 1.0 g of orange oil or turpentine oil was blended, an insecticidal effect equivalent to or higher was obtained.

Test example 2
Using the cockroach spray products of Example 1 and Comparative Example 1, the knockdown time (seconds) was calculated by spraying directly from a distance of 50 cm toward the black cockroach. The test was repeated 5 times and the average value was calculated.

  As a result of the test, the knockdown time was about 17 seconds, and it was confirmed that the insecticidal effect was not affected when sprayed directly on the cockroach even if it contained powder.

Test example 3
Residual efficacy test (optional contact method)
Twenty black cockroaches were placed in a 100 cm × 100 cm bat, reared for one day, and habituated. The specimens of Example 3 and Example 4 were spray-applied on a decorative board (15 cm × 15 cm) for 1 second, and 10 sheets of the board were placed in the bat. Then, the number of KD after 2 hours (the number of cockroaches knocked down) and the number of lethals after 24 hours were observed. The test was repeated twice, and the KD rate (%) and the lethality rate (%) were calculated, respectively.

  The results of the test are as shown in Table 3. In both Example 3 and Example 4, a higher KD rate (%) and lethality rate (%) were obtained than in Comparative Example 1. In particular, Example 4 in which imiprothrin and methoxadiazone were used in combination had an excellent effect.

Test example 4
Crevice spray efficacy test 30 black cockroaches were placed in a 30 cm × 40 cm × 30 cm box, reared for one day, and habituated. The specimens of Example 3 and Example 4 were sprayed for 6 seconds from the opening provided on the top surface. The number of FO after 2 minutes (the number of cockroaches flushed out) and the number of KD were observed. The lethal number after 24 hours was observed. The test was repeated twice, and the FO rate (%), KD rate (%), and lethality rate (%) were calculated, respectively.

  The results of the test are as shown in Table 4. In both Example 3 and Example 4, high FO rate (%), KD rate (%), and lethality rate (%) were obtained. In particular, Example 4 in which imiprothrin and methoxadiazone were used in combination was excellent in all of the FO rate, KD rate, and lethality, and was considered to be effective for application to gaps.

Formulation Example 1
(Ingredient) (wt%)
Pural 0.67g
Silic anhydride 0.1g
Plant extract ^* 1.0g
Isopropyl myristate 4.0 g
No. 1 kerosene 70ml dimethyl ether 110ml
Liquefied petroleum gas 120ml
300ml total
Formulation Example 2
(Ingredient) (wt%)
Pural 0.67g
Silic anhydride 0.1g
Plant extract ^* 1.0g
Ethanol 4.0g
No. 1 kerosene 70ml dimethyl ether 110ml
Liquefied petroleum gas 120ml
300ml total
Formulation Example 3
(Ingredient) (wt%)
Pural 0.67g
Silic anhydride 0.1g
Vertrel XF 10.0ml
Isopropyl alcohol 20ml dimethyl ether 280ml
300ml total
Formulation Example 4
(Ingredient) (wt%)
Pural 0.67g
Silic anhydride 0.1g
Plant extract ^* 1.0g
Vertrel XF 5.0ml
Isopropyl alcohol 15ml dimethyl ether 285ml
300ml total
* The plant extract is turpentine oil, eucalyptus oil, cinnamon oil, linalool, perilla oil, mint oil, clove oil, citral, orange oil, pinene, benzaldehyde, eugenol in any of Formulation Examples 1, 2, and 4. It is at least one selected from the group.

Claims (3)

  A cockroach spray product comprising an insecticidal component and a powder, wherein the powder is sprayed in an amount of 5 mg or more per 10 seconds together with the insecticidal component.   The spray product for cockroaches according to claim 1, wherein the insecticidal component is imiproton or imiproton and methoxadiazone. The spray product for cockroaches according to claim 1 or 2, which contains a plant extract and is sprayed together with an insecticidal component and powder.