KR100502227B1 - Insect repellent and insect repellent method using the same - Google Patents

Abstract

The present invention provides an insect repellent having at least one room temperature volatile insecticidal or insect repellent compound in a carrier having at least one through hole. The use of insecticidal or insecticidal compounds of room temperature volatility can ensure a satisfactory insect repellent effect. The use of certain structures, for example folding structures, in the insect repellent can reduce the wasteful volatilization of volatile insecticidal or insect repellent compounds when not in use.

Description

Insect repellent and insect repellent method using the same

The present invention relates to insect repellents and, more particularly, to insect repellents or insect repellents. The present invention provides a simple insect repellent means that does not require a heat source, unlike conventional mosquito coils, electric mosquito mats, and wicks in which the insecticide and the lower part are immersed in the insecticide and the upper part is heated by an electric heater. Some of the insect repellents of the present invention can be used for interior decoration.

It is an object of the present invention to provide an insect repellent comprising a room temperature volatile insecticidal or insect repellent compound which is retained in a carrier having at least one through hole without heating.

As an insecticidal or insecticidal compound having a room temperature volatility used in the present invention, a compound having a vapor pressure of 1.0 × 10 ⁻⁴ mmHg or more at 20 ° C. is preferable. Typical examples of room temperature volatile insecticidal or insect repellent compounds include empentrin, transfluthrin and 1-ethynyl-2- having a vapor pressure in the range of 1.0 x 10 ^-4 mmHg to 5.0 x 10 ^-2 mmHg at 20 ° C. Room temperature volatile pyrethroid compounds such as fluoro-2-pentenyl 3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate, as well as caran-3,4-diol, N, N-di Room temperature volatile insect repellent compounds such as ethyl-m-toluamide and 1-methyl-n-propyl 2- (2-hydroxyethyl) -1-piperidinecarboxylate.

The carrier used in the present invention may have any form as long as it provides one or more through holes to ensure effective air flow. The carrier preferably has a plurality of through holes. Preferred forms of the carrier are those in which the ratio of surface area to volume is in the range of 1 to 20 cm ⁻¹ .

As used herein, the term "surface area" means the total area of the outer and inner surfaces of the carrier, exposed to air. As used herein, the term "volume" refers to the volume determined by the outer contour of the carrier.

Typical examples of carrier forms include bundles of cylindrical tubes as shown in FIG. 1, rolls with space as shown in FIG. 2, and folded paper types as shown in FIG. 3.

The preferred form of the carrier used in the present invention may be a folding structure having a plurality of through holes.

Typical examples of preferred forms of such carriers include the forms shown in FIGS. 4A and 4B, well known as paper toys (commonly called "Denguri" among wholesale toy stores in Osaka City). In this form, a honeycomb paper carrier with tubular through holes is sandwiched between the planar members and rotates the planar members from 0 ° to 360 ° in the reverse direction around a fixed axis on the planar or side edges of the planar member. Can be folded or folded.

Another example of the insect repellent of the present invention is shown in Figs. 5A and 5B. In the insect repellent material, a honeycomb paper carrier having a tubular through hole is sandwiched between the planar members, by moving the planar members in parallel in a reverse direction (for example, by approaching or away from the planar members). Can be folded or folded

In the insect repellent containing a pair of planar members as shown in Figs. 4A, 4B, 5A and 5B according to the present invention, the planar members are usually made of thick paper, resin or other material.

The carrier used in the present invention may be made of resin film, paper, cloth or other materials such as polyethylene and polyvinyl chloride. In the case of a paper carrier, it is preferable to use a relatively soft paper in view of the easy secondary processing and impregnation of the insecticidal or insect repellent compound.

The insect repellent of the present invention may typically have a volume of about 200 to about 10000 cm ³ . It can be adapted for use as upholstery by the application of suitable models, colors and other features.

In the case of a carrier having a plurality of through holes, it is preferably each having a vertical cross section of about 0.5 to about 10 cm ² . It may have about 10 to about 1000 through holes.

In the insect repellent material having a carrier having a plurality of through holes according to the present invention, the size of these through holes need not all be the same. Different sizes of through holes can be combined or adapted to use as upholstery by applying suitable shapes, colors or other features.

The amount of the room temperature volatile insecticidal and insecticide compound to be retained in the carrier varies depending on the type of compound used, the environment used and the number of insecticides used. However, satisfactory results are generally obtained when insecticidal or insecticidal compounds are retained in an amount of about 0.1 to about 100 g on a carrier in each insect repellent. The insect repellent of the present invention can be used to control mosquitoes, flies and other pests by arranging one to many in suitable place (s) indoors, such as a residence, office or warehouse, or by placing multiple insect repellents in a large space. Can be.

In the case of the folding insect repellent material according to the present invention, it is usually unfolded and then placed in a desired place. When the folding insect repellent material according to the present invention is used, volatilization of the insecticidal or insect repellent compound of room temperature volatile can be adjusted by changing the spread angle or degree of the carrier.

When the insect repellent of the present invention is not used, by folding the carrier of the insect repellent, wasteful volatilization of the insecticidal or insect repellent compound can be reduced, and the insect repellent effect can be preserved for a long time.

Example

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

Example 1

First, a 5% (w / v) solution of 1-ethynyl-2-fluoro-2-pentenyl 1R-trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate in acetone 20 ml are evenly applied to 32 cylindrical tubes made of filter paper 2 cm in diameter and 6.5 cm in length, and then dried. The cylindrical tube is tied with a string so that the vertical cross-sectional contour is approximately circular as shown in FIG. 1 to obtain the insect repellent of the present invention. The ratio of surface area to volume of the insect repellent was about 3.0 cm ⁻¹ .

Example 2

Acetone instead of 5% (w / v) solution of 1-ethynyl-2-fluoro-2-pentenyl 1R-trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate in acetone The insect repellent of the present invention is obtained in the same manner as described in Example 1, except that a 20% (w / v) solution of 1S, 3S, 4S, 6R-caran-3,4-diol in water is used.

The preparation example of the insect repellent used for a comparison in the following test example (Example 3) is described as reference Example 1.

Reference Example 1

First, a 5% (w / v) solution of 1-ethynyl-2-fluoro-2-pentenyl 1R-trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate in acetone 20 ml are uniformly applied to one columnar tube made of filter paper 13 cm in diameter and 6.5 cm in length, and then dried to obtain a comparative insect repellent. The ratio of surface area to volume of the insect repellent was about 0.62 cm ⁻¹ .

Example 3

In the center of the laboratory, measuring 28 m ³ (4.3 m x 2.65 m x 2.45 m), the insect repellent obtained in Example 1 or Reference Example 1 is suspended so that its bottom is 1.2 m high from the floor. A distance of 60 cm and 180 cm horizontally from the insect repellent, each of which is a cage of nylon (30 cm in diameter and 20 cm in height) containing 20 female mosquitoes (Culex pipiens pallens) The two cages, or a total of four nylon cages, are suspended from their bottoms 60 cm above the floor.

After 60 minutes, the number of knocked down mosquitoes is counted and the percent knockdown is measured.

During the test, an electric fan is placed directly underneath the insect repellent to stir the room air, and a plate is placed on top of the electric fan so that wind from the electric fan does not directly blow into the insect repellent.

The results are shown in Table 1.

TABLE 1

Example 4

The same test as described in Example 3 is carried out by replacing the Curex Pifiens pence cancer adult with Aedes aegypti and measuring the knockdown rate (%) after 30 minutes.

The results are shown in Table 2.

TABLE 2

Example 5

First, a 10% (w / v) solution of 1-ethynyl-2-fluoro-2-pentenyl 1R-trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate in acetone 10 ml is applied to the paper to be impregnated and then air dried. Using a paper impregnated with a pair of rectangular planar members each measuring 7.3 cm x 6.5 cm, a honeycomb paper carrier with tubular through holes sandwiched between the planar members is shown in FIGS. 4A and 4B. Insect repellents in the form as described. Twenty pleated insect repellents are provided between the planar members so that the insect repellents can be deployed at an angle of 0 ° to 360 ° about a fixed axis on the side edge of 6.5 cm in length. The following tests are performed using insect repellents.

In a laboratory center measuring 28 cm ³ (4.3 m x 2.65 m x 2.45 m), the insect repellent obtained above is spread out at an angle of 360 ° around a fixed axis on a side edge of 6.5 cm in length and the lower part thereof is 1.2 m high from the floor. Suspend to position Two nylon cages (cylinders 30 cm in diameter and 20 cm in height) containing 20 common mosquitoes (Curex pipiens palens) female larvae at a distance of 60 cm and 180 cm horizontally from the insect repellent, that is, a total of 2 Four nylon cages are suspended with their lower part 60 cm above the floor.

After 60 minutes, the number of knocked down mosquitoes was counted and the percent down was measured at 100%.

Example 6

The same test as described in Example 5 was carried out by replacing the Curex Pifiens palace cancer adult with Aedes aegypti.

As a result, the knockdown rate (%) measured after 60 minutes was 100%.

Example 7

The insect repellent of the type shown in FIGS. 4A and 4B was prepared in 1-ethynyl-2-fluoro-2-pentenyl 1R-trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropane in acetone. Prepared in the same manner as described in Example 5 except that the concentration of the carboxylate was changed from 10% to 20%. The following tests were carried out using the insect repellent thus obtained.

In a draft chamber in a laboratory with an ambient temperature of about 25 ° C. and a humidity of 50% to 60%, the obtained insect repellent is stored for 3 weeks (ie 504 hours) in the fully unfolded state. After storage, the insect repellent is used for the same test as described in Examples 5 and 6.

As a result, the knockdown rate (%) after 60 minutes was 99% for Curex PPI Enthance and 100% for Aedes Aegyti.

Example 8

First, 10 ml of a 20% (w / v) solution of 1S, 3S, 4S, 6R-charan-3,4-diol in acetone is applied to the paper and impregnated, followed by air drying. The impregnated paper is used with a pair of planar members to produce a repellent material of the type shown in FIGS. 4A and 4B.

1 is a perspective view showing an example of the insect repellent material of the present invention.

2 is a perspective view of another insect repellent material of the present invention.

3A and 3B are cross-sectional and side views of yet another insect repellent material of the present invention, respectively.

4A and 4B are explanatory diagrams of still another insect repellent material of the present invention. In the insect repellent material, the folded carrier as shown in Fig. 4A rotates a planar member which shows the shape of the insect repellent when in use, in a reverse direction around a fixed axis on its edge, for example 180 ° as shown in Fig. 4B. Can be expanded by

5A and 5B are explanatory diagrams of still another insect repellent material of the present invention. In the insect repellent material, the carrier folded as shown in Fig. 5A can be unfolded by separating the planar members in parallel in a reverse direction as shown in Fig. 5B.

Claims (9)

An insect repellent comprising a room temperature volatile insecticide or insect repellent compound retained in a carrier having at least one through hole without heating. The insect repellent according to claim 1, wherein the ratio of the surface area to the volume of the carrier is in the range of 1 to 20 cm ^-1 . The insect repellent material of Claim 1 or 2 whose material of a support body is paper, cloth, or a resin film. The insect repellent material of Claim 1 or 2 whose carrier is a folding structure which has many through-holes. 5. The device of claim 4, wherein the carrier further comprises a pair of planar members sandwiched therebetween, wherein the carrier reverses the planar member about a fixed axis on a plane or side edge of the planar member. Insect repellent that can be stretched or folded by rotating. The insect repellent of Claim 1 or 2 whose vapor pressure of the insecticidal or insecticidal compound of room temperature volatility at 20 degreeC is 1.0 x 10 <^-4> mmHg or more. The method of claim 1 or claim 2, wherein the room temperature volatile insecticidal or insect repellent compound is empentrin, transflutrin, 1-ethynyl-2- fluoro-2-pentenyl 3- (2, 2-dichlorovinyl ) -2,2-dimethylcyclopropanecarboxylate, caran-3,4-diol, N, N-diethyl-m-toluamide and 1-methyl-n-propyl 2- (2-hydroxyethyl)- Insect repellent, which is at least one compound selected from the group consisting of 1-piperidinecarboxylate. In the method of insect repellent by using a insect repellent comprising a carrier sandwiched between a pair of planar members, the method comprises the steps of unfolding the carrier by moving the planar member in the reverse direction and on the carrier without heating Volatilizing the supported insect repellent, wherein the carrier comprises a plurality of through holes, the ratio of the surface area to volume of the carrier is in the range of 1 to 20 cm ⁻¹ , the carrier is made of paper, And a honeycomb structure having a through hole, wherein the honeycomb structure has a structure formed when the insect repellent is opened. 5. The insect repellent in accordance with claim 4, wherein the carrier of the honeycomb structure having a tubular through hole further comprises a planar member sandwiched therebetween, wherein the carrier is foldable or unfoldable by moving the planar member in parallel in a reverse direction.

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