JP2018115113A - Insecticidal aerosol product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten pest knockdown time.SOLUTION: An aerosol composition containing an insecticidal component and an HFO solvent is stored with a propellant in an aerosol container.SELECTED DRAWING: None

Description

  The present invention relates to an insecticidal aerosol product that kills pests such as bees and abs.

  Conventionally, insecticides containing oily liquids have been studied. Patent Document 1 discloses a pest control agent containing a mineral oil that acts as a spreading agent. Patent Document 2 discloses a pesticidal composition containing a low-viscosity mineral oil. Patent Document 3 discloses that liquid paraffin is added as a foam regulator in a resin foam aerosol. Patent Document 4 discloses that liquid paraffin is used as a solvent for transfluthrin to prevent crystal precipitation in a high concentration liquid of transfluthrin. Patent Document 5 discloses that paraffin that is liquid at room temperature is contained in order to prevent light and ultraviolet degradation of the pyrethroid compound.

Japanese Patent No. 4053131 Japanese Unexamined Patent Publication No. 2011-517685 Japanese Patent No. 4741780 JP 2001-192309 A Japanese Patent No. 5556790

  By the way, the oily liquid is contained in the insecticide composition for various purposes as described above. However, the highest priority for the effectiveness of the insecticide composition for the user is that the insecticide composition is used as a pest. This is the so-called knockdown time from when the insects are attached until the normal movement of the pests stops. It is especially important for pests that move quickly and sting humans like bees and flies.

  This invention is made | formed in view of this point, The place made into the objective is to shorten the knockdown time of a pest.

  In order to achieve the above object, an HFO solvent is included in the present invention.

  The first invention is an insecticidal aerosol product in which an aerosol composition containing an insecticidal component and an HFO solvent is housed in an aerosol container together with a propellant.

  According to this structure, the knockdown time of a pest is shortened by containing the HFO solvent.

  The knockdown time is the time from the start of spraying the aerosol composition to a pest until the pest is knocked down. Knockdown refers to a state in which normal movement of a pest has stopped, and specifically refers to a state in which a pest having an abnormality in flying or walking is ascended (turned over).

  According to a second aspect, in the first aspect, the aerosol composition contains liquid paraffin.

  According to this structure, the knockdown time of a pest is further shortened.

  A third invention is characterized in that, in the second invention, the content of the liquid paraffin is 10 w / v% or less of the aerosol composition.

  That is, when an insecticidal aerosol product is used, the insecticide composition may adhere to the wall or the like. When an insecticide composition containing an oily liquid adheres to a wall or the like as in Patent Documents 1 to 5, it takes a long time to evaporate, and there is a risk that a state contaminated by the insecticide composition for a long time will continue. However, according to the present invention, since the content of liquid paraffin, which is an oily liquid, is 10 w / v% or less, when the aerosol composition adheres to a wall or the like using an aerosol product, the time passes. The aerosol composition is less likely to remain on the wall or the like.

  Moreover, since the content of liquid paraffin is 10 w / v% or less, the aerosol composition is less likely to be clogged inside the injection nozzle.

According to a fourth invention, in the second or third invention, the liquid paraffin has a kinematic viscosity of 18.0 mm ² / s (40 ° C.) or more.

  According to this structure, the knockdown time of a pest is further shortened.

  According to the first invention, the knockdown time can be shortened by containing the HFO solvent.

  According to the second invention, since the aerosol composition contains liquid paraffin, the knockdown time of the pest can be further shortened.

  According to 3rd invention, since the liquid paraffin of 10 w / v% or less is contained, the pollution property after use can be reduced, shortening the knockdown time of a pest.

According to the fourth invention, the knockdown time can be further shortened by setting the kinematic viscosity of liquid paraffin to 18.0 mm ² / s (40 ° C.) or more.

  Hereinafter, embodiments of the present invention will be described in detail. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  The aerosol product according to the embodiment of the present invention is an aerosol product in which an aerosol composition and a propellant for injecting the aerosol composition are contained in an aerosol container. Since the aerosol container is conventionally well-known, a detailed description is omitted, but a valve having an injection port for injecting the object is provided, and the container can be moved by pushing the valve. It is injected at a predetermined flow rate. The spray particle diameter, the effective reach distance of the spray, and the like can be set by the type of the propellant, the valve structure, the diameter of the injection port, and the like.

  As the propellant, for example, liquefied petroleum gas (LPG), dimethyl ether (DME) or the like can be used, and among these, only one kind or a mixture of two or more kinds can be used.

  The aerosol composition contains an insecticidal component, an HFO solvent, liquid paraffin, and a solvent, but liquid paraffin may be omitted. Examples of the insecticidal component include pyrethroid insecticidal components such as tralomethrin, bifenthrin, permethrin, phenothrin, cypermethrin, ciphenothrin, phthalthrin, resmethrin, etofenprox, acrinathrin, and silafluophene. Among these, arbitrary 1 type may be used and 2 or more types may be mixed and used. Suitable for insecticidal ingredients are phthalthrin and tralomethrin. As phthalthrin, d-T80 phthalthrin, d-T98 phthalthrin and the like are known depending on the content ratio of stereoisomers, and any of them can be used. Phthasulin is an insecticidal component with an excellent immediate knockdown effect against pests, and in this sense can be called a “knockdown agent”. Tralomethrin is an insecticidal component that is superior to the final lethal effect of pests rather than its immediate effect, and in this sense can be called a “lethal agent”. By including both a knockdown agent and a lethal agent, an immediate knockdown effect and a reliable lethal effect can be obtained. In addition, since this invention is related with shortening of knockdown time, the effect of invention can be exhibited more suitably by using the insecticidal component (knockdown agent) excellent in the immediate knockdown effect. .

  As the HFO solvent, for example, Vertrel Souplion, Vertrel Cinella manufactured by Mitsui DuPont Fluoro Chemical Co., Ltd. can be used.

As the liquid paraffin, for example, liquid paraffin having a kinematic viscosity of 18.0 mm ² / s (40 ° C.) or more is preferable. Liquid paraffin having a kinematic viscosity of 18.0 mm ² / s (40 ° C.) or higher is manufactured by Sanko Chemical Co., Ltd. 100-S, 120-S, 150-S, 260-S, 350-S, 380-S. Of these, any one of them may be used, or two or more may be mixed and used. The kinematic viscosity of each liquid paraffin, product name 100-S is 18.0 mm ² / s ± 2 (40 ° C.), a 120-S is 20.5 mm ² / s ± 2 (40 ℃), 150 S is 25.4 mm ² / s plus or minus 2 (40 ° C.), 260-S is 49.0 mm ² / s plus or minus 3 (40 ° C.), and 350-S is 67.0 mm ² / s plus. Minus 3 (40 ° C.), and 380-S is 73.0 mm ² / s plus or minus 3 (40 ° C.).

As will be described later, liquid paraffin with a kinematic viscosity of 4.4 mm ² / s (product name 40-S), liquid paraffin with a kinematic viscosity of 8.0 mm ² / s (product name 55-S), kinematic viscosity of 13.8 mm ² / s. When each of the liquid paraffin (product name 80-S) was used alone, the knockdown time was not significantly reduced as compared with the case of no liquid paraffin added.

Moreover, arbitrary 2 or more types may be mixed among the liquid paraffin of the above-mentioned several product numbers, and it is good also as liquid paraffin whose kinematic viscosity is 18.0 mm < ² > / s (40 degreeC) or more.

  The solvent is not particularly limited as long as it can dissolve the insecticidal component and the like, and can contain one or more solvents from hydrocarbons, alcohols, isoparaffins and the like according to the purpose. For example, kerosene (kerosene) or the like may be included as a solvent for improving the affinity for the insect body surface. Moreover, the aerosol composition may further contain a solvent (auxiliary solvent) for improving the solubility of the hardly soluble insecticidal component. Examples of such auxiliary solvents include glycol ether solvents, and examples of glycol ether solvents include PGME (propylene glycol monomethyl ether).

  Examples of target insect pests for aerosol products include bees and flies, but can also be used for other insect pests.

  Next, the results of the efficacy test and the contamination test will be described for the aerosol product according to the embodiment.

  First, the results of the efficacy test will be described. The test agents are the comparative example shown in Table 1 and Examples 1 and 2.

  Tralomethrin and d-T98 phthalthrin are insecticidal components. Neothiozole F (Kerosin) is a solvent that dissolves the insecticidal component. LPG 0.4 (0.4 MPaG (at 20 ° C.)) is a propellant. In the examples and comparative examples of the present specification, the aerosol composition was prepared to have a volume of 165 ml, and the aerosol composition and the propellant were filled in an aerosol container to obtain a 550 ml insecticidal aerosol product.

  A comparative example is an example which does not contain an HFO solvent and liquid paraffin. Example 1 contains Vertell Cinella as an HFO solvent in an amount of 1 w / v% of the aerosol composition. Example 2 contains Vertell Cinella as an HFO solvent and contains 10 w / v% liquid paraffin of the product name 260-S.

  The test method is as follows. The test insect is an adult female bee. For each of the comparative examples and Examples 1 and 2, the test insects were repeated 3 times and the knockdown time was measured. One test insect was put in a glass ring having a diameter of 9 cm, and both ends of the glass ring were covered with a nylon mesh and a metal ring. This glass ring was installed inside a glass tube connected to an aerosol spray device. The distance between the spray port of the aerosol spray device and the test insect was 5 m, and the spray time was continuously 2 seconds. The time (knockdown time) from when the spraying of the aerosol spraying device was started until the test insect was knocked down was measured, and the average value after repeating three times was calculated.

  The test results are shown in Table 2.

  In the comparative example, the average knockdown time was 20 seconds or more, whereas in Example 1, it was about 18 seconds, and in Example 2, it was about 12 seconds. Therefore, the pest knockdown time can be shortened by containing the HFO solvent. Moreover, the pest knockdown time can be further shortened by containing liquid paraffin.

Incidentally, the kinematic viscosity of the liquid paraffin is less than 18.0mm ² / s (40 ℃), because it tends to knock down time is longer than when it is 18.0mm ² / s (40 ℃) or higher The kinematic viscosity of liquid paraffin is preferably 18.0 mm ² / s (40 ° C.) or higher. In addition to the honey bees, it is estimated that the test results have the same tendency with respect to pests such as wasps and flies.

  By the way, there are many unknown parts about the effect | action of the HFO solvent with respect to a pest, and the effect at the time of combining a HFO solvent and an insecticidal component is not known at all conventionally. In this regard, the applicant of the present application is examining the effect of various HFO solvents on pests in the process of reaching the present invention. As a result, the applicant of the present application has found that spraying a certain type of HFO solvent alone on the pest alone has an effect of inhibiting the action of the pest (slowing the movement). This is considered to be a kind of anesthetic effect, and it is thought that a mechanism completely different from the knockdown action by the insecticidal component is working. Therefore, even if the HFO solvent and the insecticidal component are combined, it has been impossible to predict from the conventional knowledge what kind of effect it will have.

  In addition, even if the action can be inhibited by spraying the HFO solvent alone on the pest as described above, according to the study by the inventors of the present application, in order to obtain an effect that the action of the pest is stopped. It was necessary to spray a large amount of HFO solvent. That is, it was thought that it was difficult to stop the pests only with the HFO solvent at the actual blending amount as an aerosol product. For this reason, in a practical insecticidal aerosol product, even if an HFO solvent was added, it could not be expected to have an effect of shortening the knockdown time. On the contrary, the pest activity was reduced by the anesthetic action of the HFO solvent, so that the expression of the effect of the knockdown agent was delayed, and the time until the knockdown could be prolonged.

  However, the inventors of the present invention have found that the effect of shortening the knockdown time can be unexpectedly obtained by blending the HFO solvent into the insecticidal aerosol product as described above, and have completed the present invention. The blending amount of the HFO solvent is not particularly limited, but is preferably 10 w / v% or less of the aerosol composition from the viewpoint of not adversely affecting the solubility of other components. More preferably, it is 5 w / v% or less.

  As described above, according to the aerosol product according to this embodiment, the knockdown time of pests can be greatly shortened. In addition, when the content of liquid paraffin, which is an oily liquid, is 10 w / v% or less, when the aerosol composition adheres to a wall or the like using an aerosol product, it tends to disappear with the passage of time. It is difficult for the composition to remain on the wall or the like, and contamination can be reduced.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the aerosol product according to the present invention can be used for, for example, bees and abs.

Claims (4)

Insecticidal ingredients,
An insecticide aerosol product characterized in that an aerosol composition containing an HFO solvent is contained in an aerosol container together with a propellant. Insecticidal aerosol product according to claim 1,
An insecticide aerosol product, wherein the aerosol composition contains liquid paraffin. In an insecticidal aerosol product according to claim 2,
An insecticidal aerosol product characterized in that the content of the liquid paraffin is 10 w / v% or less of the aerosol composition. Insecticide aerosol product according to claim 2 or 3,
An insecticidal aerosol product, wherein the liquid paraffin has a kinematic viscosity of 18.0 mm ² / s (40 ° C.) or more.