HK1002167B - Insect pest control method - Google Patents

Description

Pest control method

Technical FieldThe present invention relates to a method for controlling pests, and more particularly, to a method for controlling flying pests, an apparatus for carrying out the method, and a carrier constituting a drug-retaining material, in which a drug containing a pest control ingredient that is less volatile at ordinary temperature is retained on a carrier to form a drug-retaining material, and then the pest control ingredient is released from the drug-retaining material by an air flow generated by an air blowing device under a non-heating condition.

Background

Many kinds of pest control agents have been known so far, but in actual use, an appropriate agent is selected depending on the pest to be controlled. For example, a drug containing a volatile pest control ingredient should be used for flying pests such as mosquitoes. That is, a drug having a high vapor pressure at ordinary temperature should be used, but in the case of using such a drug, the drug is volatilized during a period of non-use such as storage, and thus the effect is easily lost, which is a problem. Therefore, in order to prevent the agents from being lost by volatilization during storage and to volatilize in a necessary amount during use, methods of evaporating the agents under heating to control pests have been employed so far in many cases. These agents to be used under heating conditions usually contain pest control ingredients having a vapor pressure at 30 ℃ of 1X 10 in most cases^-3mmHg or less.

As a method for controlling pests by evaporating a chemical under heating, for example, in the case of mosquito repellent incense, the chemical is kneaded together with a base material having a slow-burning property and molded into incense stick, the molded incense stick is ignited, and the chemical is volatilized by burning and heating the incense stick. Examples of the pest control ingredient used in the joss stick include: pyrethrin, allethrin, ェンペントリン, and the like. In addition, in the case of using a mesh-type or liquid-type electronic mosquito repellent, a chemical containing an insect pest control ingredient is mixed or impregnated into an appropriate base material, and a part of the base material containing the chemical is heated by a heater or the like, thereby evaporating the chemical. Examples of the pest control component used in this method include: pyrethrum propenyl, フラメトリン, プラレトリン, etc. In addition, there is also a method of heating an agent in a short time by a heat source of combustion or chemical reaction to evaporate it, such as a fumigant or a heating evaporant, and as a pest control ingredient used in this method, there are known: メトキサジァゾン, permethrin, dichlorvos, etc. (Japanese society for insecticide industries: general household insecticides (1991)).

On the other hand, conventionally, as a means for forcibly volatilizing the medicine, a method of volatilizing the medicine by blowing air is known. There is known an insect-proofing device in which an insect-proofing agent having sublimation property such as naphthalene is contained, outside air is sucked through a suction port of the device to volatilize an insect-proofing agent volatile component in the device, and then air containing the insect-proofing agent volatile component is discharged from a discharge port (jp 55-954 a). Another known method of killing insects is to drive a diffusion material holding a volatile chemical at normal temperature by a driving device such as a fan to diffuse the volatile chemical, thereby achieving the purpose of killing insects. This method is one of the methods for volatilizing the drug under blowing air and in a non-heated condition. However, even when volatilization is performed by this method, a drug having high volatility is required to be effective as a drug to be used.

In the above-mentioned method of volatilizing the drug by blowing air, a vapor pressure of 1X 10 at 30 ℃ is used^-3mmHg～1×10^-6In the case of mmHg pest control agents, hot air is used as the air to be blown.

Hitherto, the vapor pressure at 30 ℃ has been 1X 10^-3mmHg～1×10^-6method for controlling pests by diffusing pest control component of mmHg into the air without heating, known to be advantageous with aerosol spray or the likeA method.

In addition, as a method for repelling flying insects in the past, in order to simplify the method and avoid the risk of temperature rise and burning around the insects, it has been common to use a method such as DDVP having a very high vapor pressure (1X 10 at 30 ℃ C.)^-2mmHg), an insecticide having a high insecticidal activity, which is made into a resin evaporator and has been put to practical use.

However, since DDVP is an organophosphorus insecticide and has a problem in terms of safety, evaporative formulations using other agents are being sought. In the case of using other insecticides such as ェンペントリン for the production of an evaporative agent, it is effective only in a narrow closed system, and is only used in places where people often go, such as septic tanks, or in a space sealed for a long time, such as a wardrobe or a drawer, in practical use.

As described above, many insecticides used for insect pests, particularly flying insect pests, are generally agents that volatilize and diffuse active ingredients therein under heating. In this case, in addition to the need to consume a large amount of energy, there is a risk of causing a temperature rise or burn in the appliance and its surroundings.

On the other hand, when the active ingredient is volatilized at room temperature without using a heating means, it is necessary to supply a sufficient amount of the active ingredient in a predetermined space, and therefore, as the active ingredient in the insecticide, it is necessary to use a component having a high vapor pressure at room temperature. However, DDVP and the like having a high vapor pressure at room temperature have a problem in terms of safety. Therefore, there has not been an effective means for supplying a sufficient amount of a drug into a predetermined space without heating when the drug is used, which is safe and does not volatilize at normal temperature, i.e., does not disappear when not used.

Therefore, there is a strong demand for the development of a method for controlling pests by volatilizing and diffusing highly safe active ingredients under non-heating conditions, while overcoming the problems of the rise.

Disclosure of the invention

The present inventors have made intensive studies to overcome the disadvantages of the prior art by using agents for pest control which usually volatilize and diffuse the active ingredients of the agents under heating and release the agents into a prescribed space under non-heating conditions to achieve pest control, and as a result, have completed the present invention.

That is, the present invention has the following contents.

(1) A method for controlling pests, characterized in that a pest control component in a chemical used is a compound which is hardly volatile at ordinary temperature, the chemical containing one or more components selected from the above components is held on a carrier to prepare a chemical holding material holding the chemical on the carrier, and then the chemical holding material is brought into contact with an air flow generated by an air blowing means to release the above component from the holding material into the air under a non-heating condition to control pests.

(2) A method for controlling pests, characterized by holding a chemical containing one or more pest control components selected from compounds which are less volatile at ordinary temperatures and/or isomers thereof and/or analogues thereof on a carrier to prepare a chemical holding material holding said chemical on the carrier, and then bringing the chemical holding material into contact with an air flow generated by air blowing means to release said pest control components from said holding material into the air under non-heating conditions to control pests; the compounds which are difficult to volatilize at normal temperature are as follows: 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate, alpha-methyl-2-methyl-d-methyl-2-cyclopentenyl d-trans-chrysanthemate, alpha-methyl-2-methyl-d-cis/trans-chrysanthemate, alpha-methyl-2-methyl, (+) -2-methyl-4-oxo-3- (2-propenyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate.

(3) A pest control device comprising a ventilation means connected to a ventilation port, wherein a chemical holding material holding a chemical on a carrier thereof is provided at least one position in the ventilation means, the chemical held on the holding material contains at least one pest control component selected from compounds which are less volatile at ordinary temperature, and the holding material provided in the ventilation means is brought into contact with an air flow generated at the ventilation port under a non-heating condition.

(4) A pest control device comprising a ventilation device connected to a ventilation port, wherein at least one site in the ventilation device is provided with a chemical holding material for holding a chemical, the chemical held by the holding material containing one or more pest control components selected from compounds which are less volatile at ordinary temperature and/or isomers thereof and/or analogues thereof, and the holding material provided in the ventilation device is brought into contact with an air flow generated at the ventilation port under a non-heating condition, wherein the chemical which is less volatile at ordinary temperature is: 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate, alpha-methyl-2-methyl-d-methyl-2-cyclopentenyl d-trans-chrysanthemate, alpha-methyl-2-methyl-d-cis/trans-chrysanthemate, alpha-methyl-2-methyl, (+) -2-methyl-4-oxo-3- (2-propenyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate.

(5) The pest control agent used in the pest control method described in the above (1) to (2) or the pest control device described in the above (3) to (4), which contains one or more pest control components selected from the following compounds that are less volatile at ordinary temperature: 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate, alpha-methyl-2-methyl-d-methyl-2-cyclopentenyl d-trans-chrysanthemate, alpha-methyl-2-methyl-d-cis/trans-chrysanthemate, alpha-methyl-2-methyl, (+) -2-methyl-4-oxo-3- (2-propenyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate.

(6) A carrier for constituting a drug-retaining material, wherein the drug-retaining material retains, on the carrier, a drug containing one or more pest control components selected from compounds which are less volatile at ordinary temperature and/or isomers thereof and/or analogues thereof, and when the drug-retaining material is set in the aeration device of the pest control device described in the above (3), the retaining material does not block the gas flow in the aeration device.

(7) A carrier for constituting a chemical holding material, wherein the chemical holding material holds a chemical containing one or more pest control components selected from the compounds described in (2) which are less volatile at ordinary temperature on the carrier, and when the chemical holding material is set in the aeration device of the pest control device described in (3), the holding material does not block the gas flow in the aeration device.

As described above, although a method of volatilizing a pest control component contained in a chemical from the chemical by blowing air to repel flying insects has been known in the past, the chemical usable in this method is limited to only a compound having a very high vapor pressure such as DDVP, or only a compound having a very small closed spaceThe preparation is used. It is believed that for those pest control ingredients that are less volatile at ordinary temperatures, and that the steam pressure at 30 ℃ is 1X 10^-3Agents below mmHg cannot achieve a concentration of the pest control component released from the agent sufficient to repel pests simply by blowing air in a non-heated state. Therefore, when a chemical containing a pest control component that is difficult to volatilize at ordinary temperature is used in a large space such as a living room, the desired effect cannot be achieved even if the pesticidal effect is obtained.

One of the reasons for this is that most pest control ingredients have not been evaluated correctly by comparing their correct vapor pressures at respective temperatures.

The present inventors have evaluated the vapor pressure at 30 ℃ of many compounds as pest control components by a cox plot described in detail below, and as a result of intensive studies using this method, a chemical holding material is produced by holding a chemical containing these pest control components on an appropriate carrier, and the pest control components are released from the chemical by blowing air in a state where the holding material is provided, thereby controlling pests, and as a result, it has been found that, with respect to pest control components that are difficult to volatilize at room temperature, if the chemical holding material is produced by holding the chemical on an appropriate carrier, and gas is passed through the holding material in a non-heated state where the holding material is provided, the pest control components that are difficult to volatilize at room temperature can be unexpectedly released from the carrier, and flying insects and the like can be repelled by these released pest control components, the method of the present invention was thus found.

As a method of holding a chemical containing an insect pest control component (including a component capable of inhibiting the behavior of biting insects) on a carrier, it is possible to hold the chemical on a carrier such as paper, porous resin, or ceramics as described in detail above, place the holder in a box, and pass gas therethrough in the state of being set as described above, or alternatively, the chemical may be made into a liquid state and put in a bottle, and the carrier (e.g., a sheet) such as paper or porous resin may be drawn out from the opening of the bottle to the outside to suck the chemical upward, and then pass the gas through the carrier portion outside the bottle in a non-heated state.

In the method of volatilizing the insect control ingredient volatile at ordinary temperature in a non-heated condition and discharging the volatilized insect control ingredient from the exhaust hole, there is a disadvantage that it is difficult to adjust the concentration of the volatile agent. Another method is to form a diffusion material holding a volatile chemical in a fan shape and drive the diffusion material by a driving device, and this method for killing insects to diffuse a volatile chemical has a disadvantage that the driving device is subjected to a load and is therefore easily damaged. In addition, this method of driving the diffusion material holding the volatile chemical by the driving means is effective only when a volatile chemical at normal temperature is used or when hot air is supplied.

The method of the present invention is to hold a chemical containing a pest control component which is difficult to volatilize at ordinary temperature on a carrier, bring the holding material holding the chemical on the carrier into contact with an air current generated by an air blowing device in a fixed state, thereby releasing the pest control component, and repel flying insects with the released chemical. This method is characterized in that the concentration of the volatile agent can be easily adjusted, there is no danger due to the non-heated condition, and the structure of the apparatus used is simple, so that it is an excellent method for releasing the pest control ingredient.

Here, as a method of feeding gas to a chemical holding material holding a chemical containing a pest control component on a carrier, a method using a simple fan driven by a battery or the like may be used, but a suitable air blowing method capable of stably releasing a chemical at a constant concentration for a long period of time up to 30 days after the start of air blowing may be used. These air blowing methods will be described in detail below.

The pest control as referred to in the present invention is a generic term for actions including repelling pests, blocking pests, preventing blood-sucking by blood-sucking pests, and resisting the bite of biting pests. Here should be emphasized: as for the pest control ingredients used in the present invention, (1) it has been found that when their temperature-vapor pressure relationships are collated using a cox plot, the temperature-vapor pressure relationships of the respective compounds appear as straight lines parallel to each other; (2) according to this research result, if the vapor pressure of the pest control component contained in the chemical at a certain temperature point between 20 ℃ and 50 ℃ is known, it is possible to evaluate the pest control effect of the pest control component on the scale of "vapor pressure converted to 30 ℃" according to the "method of releasing the pest control component by blowing air only in a non-heated state", and based on this result, it is possible to obtain new knowledge, and based on these knowledge, it is possible to obtain a new technique.

An example of a cox plot for each of the pest control agents obtained in this study is shown in fig. 11, where in fig. 11, a: DDVP, b: chlordine, c: ェンペントリン, d: systemic phosphorus-D, e: テラレスリン (M108), f: フラメトリン, g: aldrin, h: プラレトリン, i: pyrethrum propenyl, j: phosphamine, K: mongolian five and one, l: fluroxypyr and m: chrysanthemum morifolium ramat, n: chrysanthemum morifolium ramat, o: フェノスリン, p: シフェノトリン, q: permethrin, r: killing pyrethrin and s: tetramethrin, t: フルシスリネ - ト.

The vapor pressure values at intervals of 5 ℃ of the pyrethroid compound at 20 ℃ to 40 ℃ are shown in Table 1, which was obtained by using a vapor pressure measuring apparatus shown in FIG. 12 (the vapor pressure measuring apparatus is described in the 4 th edition of the chemical industry test method [ Sho 61 Kimura ] and the detailed description of the measuring apparatus is omitted here). Wherein some of the values of the underline (dashed lines) are literature values.

TABLE 1 vapor pressure values of pyrethroids

	Vapor pressure (mmHg)
							20℃		25℃	30℃	35℃	40℃
	プラレトリン Egypenethrin Mefenacet Permethrin シフェノトリン ェンペントリン DDVP ペ ン フ ル ル スリン フ ラ メ ト リ ソ テ ト ラ メ スリン テラレスリン (M108)	3.5×10 -53.4×10-5 3.5×10 -8 3.5×10 -6 1.2×10 -6 5.5×10 -7 9.2×10 -75.1×10-4 1.2×10 -28.3×10-5 1.3×10 -4 2.4×10 -6 2.2×10 -4		6.9×10-56.3×10-56.6×10-87.1×10-62.2×10-61.1×10-61.9×10-69.2×10-41.9×10-21.5×10-42.2×10-44.4×10-64.2×10-4	1.3×10-41.2×10-41.2×10-71.7×10-54.3×10-61.9×10-63.6×10-6 1.6×10 -33.0×10-22.7×10-44.5×10-4 8.5×10 -66.6×10-4	2.4×10-42.2×10-42.2×10-72.8×10-57.7×10-63.6×10-66.6×10-62.8×10-34.6×10-24.0×10-47.1×10-41.7×10-51.2×10-3							4.4×10-44.0×10-43.8×10-75.6×10-51.4×10-56.3×10-61.3×10-54.8×10-3 7.1×10 -28.5×10-41.4×10-33.2×10-54.8×10-3

The values with underlining (dashed lines) are literature values.

Among them, literature values of vapor pressure are obtained from the following references.

(i) The technology and foundation for the preparation of agricultural chemicals (the technology と foundation for the preparation of medicinal materials of agricultural chemicals) (Japan plant disease control Association), was published in Showa 63

(ii) Agricultural data manual (agriculture デ - タブック) (ンフトサィェンス), 1989

(iii) Secure data (secure デ - タ) (テラレスリン)

(iv) Product data (product デ - タ) (フラメトリン, chrysanthemum like insect and chrysanthemum killed)

The pest control component usable in the present invention is not particularly limited as long as it is a compound which is hardly volatile at ordinary temperature, and is preferably a compound having a vapor pressure of more than 1X 10 at 30 ℃^-7mmHg, compounds with a boiling point of at least 120 deg.C/1 mmHg. However, the vapor pressure range referred to herein is a vapor pressure at 30 ℃ on a temperature-vapor pressure graph represented by the cox plot belowAnd (3) a range.

Conventionally, vapor pressure of pest control components has been measured in a rough manner in any temperature range, and the measurement conditions have not been fixed. It can be measured generally at a temperature ranging from 10 ℃ to 50 ℃. Therefore, it is difficult to compare the vapor pressures of many kinds of pest control agents with each other.

However, according to the results of the studies by the present inventors, it is possible to solve the above-mentioned problems by estimating the vapor pressure at a desired temperature using a cox-map by knowing only one measured value.

The cox plots are described in detail below.

It is known in the science of physics that log P and t/(t + C) are obtained from the values of temperature t and vapor pressure P measured at that temperature, and that the results show high accuracy linearity when the log P is plotted on the vertical axis and the t/(t + C) on the horizontal axis. Here, P represents a vapor pressure (mmHg), t represents a temperature (° C), and C represents a constant (generally 230).

That is, for most chemicals, there is a temperature t between the vapor pressure P at that temperature and the temperature represented by the following formula

log P is a relationship expressed by D + Et/(t + C), and therefore, a straight line is necessarily obtained by plotting log P as the vertical axis and t/(t + C) as the horizontal axis.

The straight line obtained by plotting the vertical axis log P and the horizontal axis t/(t + C) and the straight line group thereof are collectively referred to as a cox-line diagram.

Among pest control ingredients whose vapor pressures have been previously measured at temperatures between 20 ℃ and 40 ℃, those vapor pressures at 30 ℃ which are derived from the above-mentioned cox plots are higher than 1X 10^-7mmHg, which is hardly volatile at ordinary temperature, and compounds having a boiling point of at least 120 ℃/1mmg can be used, but from the viewpoint of safety, pyrethroid-based compounds are preferably used, and representative examples thereof are as follows:

dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans chrysanthemate (common name: pyrethrum acranum, trade name ピナミン, product of Sumitomo chemical industries Co., Ltd.)

Dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-cis/trans chrysanthemate (trade name: ピナミン フォルテ, manufactured by Sumitomo chemical Co., Ltd., hereinafter referred to as "ピナミン フォルテ")

Dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate (trade name: バィォァレスリン; manufactured by ュクラフ)

D-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate (trade name: ェキスリン, product of Sumitomo chemical Co., Ltd., trade name: ェスバィォ - ル, product of ュクラフ, hereinafter referred to as "ェスバィォ - ル")

(5-benzyl-3-allyl) methyl d-cis/trans chrysanthemate (common name: Mefenacet, trade name: クリスロンフォルテ, product of Sumitomo chemical industries, Ltd., hereinafter referred to as "レスメトリン")

5-propargyl-2-allylmethyl D-cis/trans chrysanthemate (common name: フラメトリン, trade name: ピナミン D フォルテ, manufactured by Sumitomo chemical Co., Ltd., hereinafter referred to as "フラメトリン")

(+) -2-methyl-4-oxo-3- (2-propenyl) -2-cyclopentenyl (+) -cis/trans chrysanthemate (common name: プラレトリン, trade name: ェトック, manufactured by Sumitomo chemical industries, Ltd., hereinafter referred to as "プラレトリン")

Dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate (common name: テラレスリン; manufactured by Sumitomo chemical industries Co., Ltd., hereinafter referred to as "テラレスリン")

Methyl dl-cis/trans chrysanthemate (1, 3, 4, 5, 6, 7-hexahydro-1, 3-dioxo-2-isoindolyl) (trivial name: フタルスリン, trade name: ネ ォ ピナミン, manufactured by Sumitomo chemical industries Co., Ltd.)

Methyl (1, 3, 4, 5, 6, 7-hexahydro-1, 3-dioxo-2-isoindolyl) methyl-d-cis/trans chrysanthemate (trade name: ネ ォ ピナミン フォルテ, product of Sumitomo chemical industries, Ltd.)

3-Phenoxybenzyl-d-cis/trans chrysanthemate (common name: phenothrin, trade name: スミスリン, product of Sumitomo chemical industries Co., Ltd.)

3-Phenoxybenzyl-dl-cis/trans-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate (common name: permethrin, trade name: ェクスミン, product of Sumitomo chemical industries Co., Ltd.)

(+ -) - α -cyano-3-phenoxybenzyl (+) -cis/trans chrysanthemate (common name: シフェノトリン, trade name: ゴキラ - ト, manufactured by Sumitomo chemical Co., Ltd.)

1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate (common name: ェンペントリン, trade name: ベ - パ - スリン, manufactured by Sumitomo chemical industries, Ltd., hereinafter referred to as "ェンペントリン")

D-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate (common name: ベンフルトリン)

In addition, as the above-mentioned pest control component, an analog of the above-mentioned compound, that is, a compound structurally similar to the above-mentioned compound, for example, in the case of ェンペントリン, 2 substituents at the 3-position thereof are methyl groups, but when the substituent is another alkyl group, an unsaturated alkyl group or a halogen atom, a compound can also be used.

In the present invention, one or more pest control components selected from the above-mentioned compounds may be held on a carrier and used as a drug holding material.

Among these compounds, particular preference is given to: ェンペントリン, プラメトリン, camomile, ェスバィォ - ル, フラメトリン and テラレスリン. Further, the organic phosphorus-based, carbamate-based, insect growth inhibitor (IGR, JH, etc.) pest control ingredients satisfying the above conditions may be used alone or in combination, without any limitation. In addition, analogs of these compounds may also be used.

The carrier constituting the drug-retaining material of the present invention is preferably a material having good air permeability so as not to interrupt the air flow from the air blowing device and not to diffuse the air flow in other directions. And is preferably a substance that can well hold a chemical agent (e.g., a pest control component, etc.). The material is not particularly limited as long as it has good gas permeability and can hold the drug well.

The carrier is preferably a material having a structure such as a honeycomb, a bamboo curtain, a lattice, or a net, from the viewpoint of simple structure and good air permeability.

The air permeability of these carriers, in terms of the air permeability, should be usually 0.1 liter/sec or more, preferably 0.1 liter/sec or more.

Examples of the material include inorganic and organic molding materials, and examples of the molded article molded from these materials include: paper (filter paper, pulp, cardboard, etc.), resin (polyethylene, polypropylene, polyvinyl chloride, high oil-absorbing polymer, etc.), ceramic, glass fiber, carbon fiber, chemical fiber (polyester, nylon, acrylic resin, vinylon, polyethylene, polypropylene fiber, etc.), natural fiber (kapok, silk, wool, hemp, etc.), and non-woven fabric made of glass fiber, carbon fiber, chemical fiber, natural fiber, porous glass material, metal mesh, etc.

The agents containing the pest control ingredient of the present invention can be held on these carriers, and these carriers can be used in one kind or a combination of two or more kinds, and can be used in an arbitrary shape.

In the case of using an adsorption carrier (an auxiliary material for holding a drug on a carrier), examples of the adsorption carrier include: gelling substances (agar, caraganan, starch, gelatin, alginic acid, etc.) and plastic polymers, etc. When a plastic polymer is used, for example, dioctyl phthalate or the like can be used.

In addition, the evaporation effect can be further improved by adding a sublimable substance such as adamantane, cyclododecane, cyclodecane, norbornane, trimethylnorbornane, naphthalene, camphor or the like as an auxiliary for promoting evaporation. Further, other pyrethrum compounds such as α - [2- (2-butoxyethoxy) ethoxy ] -4, 5-methylenedioxy-2-propyltoluene (synergist ether), N- (2-ethylhexyl) bicyclo [2, 2, 1] hept-5-ene-2, 3-dicarboxylic acid imine (MGK-264), octachlorodiisopropyl ether (S-421), サィネピリン 500, etc. may be used in combination with known synergists as an active ingredient.

In addition, in order to improve the stability of the agent against the action of light, heat, oxidation, etc., it may be used after adding an antioxidant or an ultraviolet absorber, so that the efficacy can be stabilized. Examples of the antioxidant include: examples of the ultraviolet absorber include 2 ' -methylenebis (6-tert-butyl-4-ethylphenol), 2, 6-di-tert-butyl-4-methylphenol (BHT), 2, 6-di-tert-butylphenol, 2 ' -methylenebis (6-tert-butyl-4-methylphenol), 4 ' -methylenebis (2, 6-di-tert-butylphenol), 4 ' -butylidenebis (6-tert-butyl-3-methylphenol), 4 ' -thiobis (6-tert-butyl-3-methylphenol), and Dibutylhydroxyketone (DBH): aromatic amines such as phenol derivatives such as BHT, bisphenol derivatives, phenyl-alpha-naphthylamine, and condensates of phenetidine and acetone, and benzophenone compounds.

When the medicine is absorbed and held by the holding member and a gas such as air is supplied to the holding member to volatilize the medicine, the indicator may be used directly or indirectly to determine whether or not the medicine remains on the medicine holding member. For the purpose of functioning as an indicator, for example, a pigment such as allylaminoanthraquinone, 1, 4-diisopropylaminoanthraquinone, 1, 4-diaminoanthraquinone, 1, 4-dibutylaminoanthraquinone, or 1-amino-4-anilinoanthraquinone can be used to change the color of the carrier. In addition, in order to have a function of indicating the residual amount of the drug, an electron donating color developing organic compound having a lactone ring or a developer having a phenolic hydroxyl group may be used, and a desensitizer may be used if necessary, and a composition of these compounds may indicate the residual amount of the drug by changing the color of the carrier with volatilization of the drug (with volatilization of the desensitizer). Further, a perfume or the like for evaporating the composition may be added thereto and mixed.

As described above, when a drug is made into a liquid, the drug solution can be contained in a single liquid bottle, the drug solution is sucked out of the bottle by the holding member, and then the gas is sent to the holding member outside the bottle to volatilize the drug solution.

As a method for holding the chemical (pest control component and the like) of the present invention on the carrier, a liquid coating method such as drip coating, dip coating, spray coating, a method such as liquid printing, brush coating, or the like, or a method for sticking the chemical to the carrier, or the like can be used to hold the chemical on the carrier. In addition, when the composition to be used is not in a liquid state or when a solvent is not used, the drug can be held on the carrier by a method such as kneading, brushing, or printing. In addition, when the agent is applied to the carrier in the above-described manner, it may be applied to all surfaces of the carrier, or may be applied to a spot position on the surface or one side surface of the carrier, or may be applied locally in a pattern of a pattern or the like.

Another solution is to fill the medicament into a bottle for the liquid and then to supply the medicament to the volatilization zone through a porous medicament holding material.

In order to facilitate the penetration of the pharmaceutical agent of the present invention into the carrier when the pharmaceutical agent is applied to the carrier, additives capable of reducing the viscosity of the liquid pharmaceutical agent may be used as required, said additives including: fatty acid esters such as isopropyl myristate, isopropyl palmitate, hexyl laurate, etc., or organic solvents such as isopropanol, polyethylene glycol, deodorized kerosene, etc.

The amount of the above-mentioned pest control component and/or each chemical agent held on the carrier is not particularly limited, but, for example, when the above-mentioned chemical agent (pest control component, etc.) is held on an oil-absorbing material (e.g., paper), the amount of the chemical agent in the oil-absorbing material is favorably in the range of 50mg/g to 1000mg/g, preferably in the range of 100mg/g to 700 mg/g. This amount range corresponds to an amount of impregnation that achieves a daily minimum volatility of 0.1mg/hr until saturation is maintained.

The device of the present invention has an air passage and an air vent (an air inlet indicated by reference numeral 12 and an air outlet indicated by reference numeral 14 in fig. 2) indicated by reference numeral 13 in fig. 2. When the drug-retaining material of the present invention is placed in the airway 13 of the device, it can be fixed at least one position in the airway (indicated by reference numeral 5 in fig. 1 and reference numeral 30 in fig. 2). The method for fixing the drug holding material (5 or 30) in the air passage 13 is not particularly limited, and for example, a groove, a guide groove, a stabilizing jig, a fixing jig, or the like for fixing the holding material may be provided in the air passage.

The ventilation device herein, specifically, the ventilation path refers to a path or a space through which the gas from the ventilation port flows. However, the ventilation path does not necessarily have to be provided specially. The vent includes an inlet for allowing gas to enter the device from the outside and an outlet for discharging the gas sucked into the device to the outside of the device.

The flow of air can be described with reference to fig. 1 and 2, and for example, a driving device such as a motor or a spring, a propeller (indicated by 6 in fig. 1 and 20 in fig. 2), or the like, which generally has a shape, and a function recognized as a fan, may be provided in the device, and the driving device may be used to drive the fan to suck air, so that the air enters the device through the air inlet. The sucked gas is then caused to flow through the ventilation path toward the exhaust port. At this time, a vortex is generated as the fan rotates. The characteristics of this vortex cause the flow rate of air drawn in from the inlet to be slow near the center of the fan and fast near the outer edge of the fan. Therefore, the amount of air passing through the carrier (drug-retaining material) is small in the vicinity of the central portion of the carrier and large in the vicinity of the outer edge portion, and therefore, there is a problem that the amount of diffusion of the volatile drug is not uniform among the respective portions of the carrier. To solve this problem, it is preferable to provide a rectifying plate (for example, as shown by reference numeral 40 in fig. 4) in the air passage. Although the flow regulating plate is provided so that the air flowing through the agent retaining material is uniformly distributed, the shape of the flow regulating plate should be appropriately selected so that the pressure loss of the air flow can be made as small as possible, and the power for rotating the fan can be made as small as possible.

The gas passing through the drug-retaining material is discharged to the outside, so that the effective component of the drug is released from the drug-retaining material retaining the drug, which is provided in the gas passage, into the gas flow as the gas passes through the drug-retaining material, and then diffused and discharged to the outside of the device along with the gas through the gas discharge port.

In practical use, it is sufficient to use a small-sized blower for a space such as a general residential room. Specifically, if the number of rotations of the fan is about 500 to 10000rpm, a driving means such as a motor or a spring may be used. In addition, piezoelectric fans that do not rely on motors or springs can also be used to blow air. Even in a space of a size as large as the living room, a good effect can be obtained even with an electric fan driven by a small-sized motor using a solar cell, a secondary cell, a dry cell, or the like as a power source. In addition, in the case where it is difficult to maintain the battery with a dry battery for a long time use, a rechargeable battery or an electric cord with a power plug may be used to continuously obtain driving power from the power source.

The fan used is generally a centrifugal fan, but this depends not only on the shape of the fan, but also on the shape of a central partition arranged behind the fan.

The shape of the fan is not limited to a propeller shape or a propeller shape, and may be a water wheel type or a rotary blade type. In the case of achieving a strong blowing action, it is preferable to use a propeller-shaped or propeller-shaped electric fan, which is advantageous in increasing the amount of volatilization by blowing air. In addition, in order to increase the amount of air that comes into contact with the fan, an opening may be provided in each blade forming the fan. For example, the plurality of openings provided in the blade can effectively evaporate the drug. The shape of the openings may be various shapes such as a mesh shape, a lattice shape, and a honeycomb shape, but the openings are preferably uniformly provided. The shape of the fan blade depends on the shape of the fan, and the fan blade can be made into a simple plate shape and a hollow shape.

Among the various types of fans, a sirocco fan 42 as shown in fig. 5 is preferable. The fan 42 can use various power supplies such as a battery to power adapter, and adjust the amount of air blown by using different voltages. In addition, the amount of air supplied may be increased by changing the shape of the fan, for example, by increasing the diameter and thickness of the fan, or conversely, may be decreased by decreasing the diameter and thickness.

In the device of the present invention, the position of the air inlet is preferably as close to the front surface of the fan impeller as possible, but should be slightly shifted from the position where the medicine holder holding the medicine on the carrier is placed.

In addition, the arrangement of the air outlet in the direction around the fan can effectively volatilize the medicine to the outside. The position of the exhaust port is only required to have the exhaust port in more than 1 direction, but when more effective volatilization is required, the exhaust port can be arranged in 2-4 directions. This allows the agent to be rapidly diffused throughout the chamber. In the conventional type in which the carrier holding the volatile chemical is disposed in the vicinity of the exhaust port, in the case where the exhaust port is disposed around the device, the carrier must be disposed around the device, but according to the present invention, the medicament can be volatilized to the periphery of the device without such an arrangement. In addition, if necessary, in order to prevent the volatile components of the medicine from rotating around the inside of the device, for example, a guide plate may be provided to control the discharge of the volatile components of the medicine in one direction.

Unlike the case shown in fig. 1 and 2, in the case of using a sirocco fan, since a medicine holder holding a medicine on a carrier is provided in front of the fan, it is preferable to use a carrier having air permeability so that the air flow sucked in is not blocked or obstructed by the medicine holder and is not scattered and diffused outward.

The position of the medicine holder may be the air intake side of the fan or the air exhaust side thereof, but there is no limitation thereto, but when it is provided on the air intake side of the fan, the air flow velocity at the medicine holder is relatively uniform at any place, whereas if it is provided on the air exhaust side of the fan, the air flow velocity at each place of the medicine holder is greatly different depending on the shape of the fan, and therefore, in this case, it is preferable to provide a flow regulating plate in the air passage as described above to make the flow of air uniform.

In general, since the amount of volatilization of the chemical varies depending on the position of the chemical holder, it is preferable to provide the chemical holder on the suction side of the electric fan. However, the medicine holder does not need to be disposed directly in front of the fan, and may be slightly displaced so long as the position of the medicine holder is within the sucked air flow that reaches the fan from the air inlet.

More specifically, the distance between the fan as the air blowing means and the carrier as the medicine holder is preferably not too close to each other, and is preferably set to a distance of about 5mm or more. If the distance between the both is too small, it is difficult to uniformly send air to the entire surface of the carrier, which is a cause of the volatilization amount of the outer peripheral portion of the carrier being smaller than that of the intermediate portion. For example, in the case of using a paper honeycomb carrier (70 × 70 × 15mm) and blowing air using a sirocco fan (diameter 5cm, thickness 2cm), when the power supply voltage is changed between 2.0V and 4.0V in order to drive the fan, the distance between the carrier and the fan is preferably 5mm to 15 mm. However, these ranges are not limited, and they may be appropriately selected depending on the shapes of the carrier and the fan, the power supply voltage, the size and the switching of the device, the combination relationship thereof, and the like.

In order to test the effectiveness of the fan-type pest control device used in the present invention, the device was placed in a space having a volume of 36m as shown in FIG. 6³Then begins to release the agent. After the start of the release, air was sucked in at a constant amount of 25 liters per 20 minutes while trapping the effective components with a silica trap, and then the quantitative analysis was performed.

The distance between the collection position and the inner wall surface of the chamber was 100cm, and the height was 150 cm. The effective component is 1m per³The concentration in the air can be determined from the amount of the active ingredient trapped at each elapsed time point by the following calculation formula.

R: quantitative value (μ g) of active ingredient

In this test, ェンペントリン was used as the active ingredient.

In addition, the case of using ェンペントリン released by the fan-type pest control device was compared with the case of using a liquid-type electronic mosquito repellent.

The volume of the first chamber is 24cm³A fan-type pest control device is installed in a room, a honeycomb holding material impregnated with 4.3g ェンペントリン and 02g ィルガンックス 1010 and having a size of 66X 15mm is installed in the device, the device is operated at a constant voltage of 3V, and chemicals are volatilized under the conditions of 1220-1250 rpm and 25 ℃. The trapping method was the same as above, and the trapping was carried out at a rate of 25L/min for 20 minutes, and the trapping was carried out by suction using a silica gel trap, and the amount of trapped air was 500L in total. The concentration of the effective components in the air is 150 deg.C away from the groundThe average of the measured values obtained by trapping was carried out at two positions of cm and 75 cm. In addition, the case of performing volatilization using a liquid electronic mosquito repellent was used as a comparative object. The volatilization from the start of volatilization to 12 hours is shown in the graph of fig. 7. In the graph of fig. 7, the o point on the curve indicates the volatilization amount of ェンペントリン (in the case of 3V constant voltage operation), and the ● point indicates the volatilization amount of プラレトリン (using a liquid electronic mosquito repellent).

In addition, in the same series of experiments, the amount of ェンペントリン released when the fan-type pest control device was used for long-term operation (12 hours of continuous operation per day for 30 days) was measured. The situation from the beginning to 360 hours is shown in the graph of fig. 8. As comparative data, using the air concentration measuring device shown in fig. 6, a liquid type electronic mosquito dispeller was placed at the same position as the fan type pest control device, and the heating volatilization state thereof is also shown in fig. 8. In the graph of fig. 8, the point "o" indicates the volatilization amount of ェンペントリン (in the case of 3V constant voltage operation), and the point "Δ" indicates the volatilization amount of プラレトリン (liquid mosquito dispeller).

From these two figures, it can be seen that the fan-type pest control device can release a greater amount of the effective components of the chemicals and reach a balanced volatile concentration within 30 minutes in the initial period, and can uniformly and stably release the effective components up to 360 hours, as compared with the liquid-type electronic mosquito dispeller.

In addition, the fan-type pest control device can also intermittently supply air, so that the amount of the released chemicals can be controlled by controlling the air supply amount, thereby achieving more uniform and stable volatilization, and controlling the increase and decrease of the volatilization amount along with the difference of day and night according to specific conditions. The air blowing operation of the fan-type pest control device is controlled by using a control circuit capable of controlling the amount of energization from a power supply as shown in fig. 9. The volatilization state of the sample ェンペントリン in a short time of 12 hours was compared between the case of continuous air blowing and the case of control in which air blowing was stopped after 10 minutes of air blowing every 2 hours, and the comparison results are shown in fig. 10. According to this result, the concentration of the active ingredient in the air can be maintained constant even when the air blowing time is controlled.

The control circuit of fig. 9 will be explained below. That is, the circuit has the following components:

a dc power supply 101 for converting electric power from a commercial power supply into a dc voltage and supplying the dc voltage; a frequency identifier 103 for identifying a frequency of the commercial power supply; a frequency divider 105 for dividing the commercial power supply frequency into original 1/5 and 1/6 to obtain a standard pulse of 10Hz according to the recognition result of the frequency recognizer 103; a pulse generator 107 for outputting a pulse at a predetermined timing based on the output of the frequency divider 105; a brightness controller 111 for controlling Light Emitting Diodes (LEDs) 109 to be turned on or off so as to externally represent the operation state of the apparatus; a silicon controlled rectifier 115 for supplying electric power to the driving motor 113; a zero-crossing controller 117 for performing zero-voltage control on the silicon controlled rectifier 115; a mode controller 119 for indicating a light-off or light-on state to the brightness controller 111 according to an external operation condition and starting the trigger controller according to a program preset to the zero-cross controller 117 to trigger the triac.

With this circuit, an appropriate blower control mode can be input to the mode controller 119, and the operation of the blower can be controlled by triggering and controlling the triac by the zero cross controller 117.

The user can select these program modes according to the application and control the operation of the blower and the evaporation of the chemical liquid according to the selected program mode.

And the circuit has a program setting function so that a user can arbitrarily set a program mode.

In the present invention, the mounting position of the drug-retaining material retaining the drug may be either the inhalation side or the exhaust side in the ventilation means, but it is preferable to mount it on the inhalation side because it is provided that the distribution of the air flow acting on the retaining material is made uniform regardless of the mounting position of the carrier in the passage route. In this case, the position of the holding member is in the air flow drawn from the air inlet to the fan.

The site for repelling vermin is not limited at all, but is preferably an isolated site having a certain space. Such as houses, greenhouses, septic tanks, etc., with pests living in these locations as targets. Such as killing flies, mosquitoes, cockroaches, house dust ticks and other harmful insects that invade from the outside, clothing pests such as rice moths, networms, bark beetles in wardrobes, pests that have an adverse effect on the crops cultivated therein in greenhouses, biting midges, flies, mosquitoes and ticks in poultry houses, and biting midges, mosquitoes and the like in septic tanks.

Function of

As described above, in the past, it was believed that it was impossible to control pests by heating at about 110 to 170 ℃ a pest control ingredient which is hardly volatile at room temperature (about 15 to 35 ℃).

The present inventors have studied the temperature-vapor pressure relationship of many pest control components and have examined the temperature-vapor pressure relationship using a cox plot, and as a result, have found that the temperature-vapor pressure relationship of various pest control components appears as straight lines parallel to each other. According to this research result, it was found that a vapor pressure at 30 ℃ on a cox diagram is lower than 1X 10^-3mmHg(1×10^-3～1×10^-7mmHg), which is hardly volatile at ordinary temperature, and has a boiling point of at least 120 ℃/1mmHg, is held on a suitable carrier, and a gas is passed through the holding material in a non-heated state while the holding material holding the chemical is fixed, whereby these pest control components can repel flying pests and pests such as cockroaches.

Further, the pest control device of the present invention does not require heating, and therefore, there is no risk of fire, and further, an effective amount of the pest control component can be released into a large space, and the effect can be maintained for a long time, and therefore, pests can be effectively controlled.

The effects of the present invention will be described below with reference to examples.

Brief description of the drawings

FIG. 1 is a schematic explanatory view of an example of a test apparatus 1 showing pest control effect; FIG. 2 is an explanatory view schematically showing an example of a fan-type pest control device 1 for controlling pest chemicals; FIG. 3 is a perspective view showing the appearance of an example of the pest control agent carrier 1; FIG. 4 is a side view showing an example of a flow regulating plate 1 provided in a volatilization device of a fan-type pest control device for chemicals; FIG. 5 is an explanatory view schematically showing an example of the fan-type pest control device 1 having a sirocco fan; FIG. 6 is an explanatory view schematically showing an example of a measuring apparatus 1 for measuring the concentration of a chemical for controlling pests which volatilizes into the atmosphere; FIG. 7 is a graph showing the concentration of active ingredients in the air of the fan-type pest control device and the liquid-type electronic mosquito repellent; FIG. 8 is a graph showing the volatilization dynamics of the effective components of the fan-type pest control device and the liquid-type electronic mosquito dispeller; FIG. 9 is an illustration of a control circuit 1 for controlling operation of a blower of the fan-type pest control device; FIG. 10 is a graph showing the volatilization of ェンペントリン when the blower of the device for controlling fan-type pest control is operated; FIG. 11 is a diagram showing an example of a cox chart 1 showing a temperature-vapor pressure relationship of a drug; fig. 12 is an explanatory view of vapor pressure measurement.

Description of the symbols

1 test device

2 insect-proof net

3 blower

4 acrylic resin cylinder

5 medicament-retaining Material

6 Fan (Propeller type)

7 electric motor

12 air inlet

13 ventilating path

14 exhaust port

15 cell

16 batteries box

17 switch

20 air supply parts (Propeller)

21 air supply parts (Motor)

30 Carrier (holding Material)

31 carrier cover

40 fairing

41 plate

42 multiblade fan

43 electric motor

44 gas outlet

50 laboratory

51 fan type pest control device

52 insect killing cage (1)

53 insecticidal cage (2)

54 silica gel trap (1)

55 silica gel trap (2)

56 flowmeter (1)

57 vacuum pump (1)

58 flowmeter (2)

59 vacuum pump (2)

60 exhaust pipe

81 constant temperature water tank

82 heater

83 stirrer

84 conducting wire

85 cooler

86 pressure gauge

87 pressure stabilizing bottle

88 hydraulic jet pump

101 DC power supply

103 frequency identifier

105 frequency divider

107 pulse generator

109 Light Emitting Diode (LED)

111 brightness regulator

113 drive motor

115 silicon controlled rectifier

117 zero crossing controller

119 mode controller

Best mode for carrying out the invention

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.Example 1

Using a test apparatus 1 shown in fig. 1 and composed of an acrylic resin cylinder 4, 20 adult (female) northern house mosquitoes (ァカィェカ) were placed between insect-proofing nets 2 and 2, a blower 3 was installed at the bottom of the test apparatus 1, a chemical holding material 5 (honeycomb shape) impregnated with a chemical was placed on the upper part of the blower 3 (lower part of the cylinder 4), air was blown from below the cylinder 4, and gas was blown into the holding material 5, and the pest control components were released from the chemical using the pest control apparatus 1 of the present invention to examine the insecticidal effect.

The investigation method is that the number of stunned northern indoor mosquitoes is counted every 30 seconds, and after observing for 30 minutes and 30 seconds, the stunned mosquitoes are transferred into a clean plastic cup (capacity about 500ml), and absorbent cotton containing 1% granulated sugar water is put as a feed, covered with a lid, and placed under a constant temperature condition of about 25 ℃ for 24 hours, and then the lethal effect is observed. The results are shown in table 2 below.

TABLE 2 insecticidal test resultsTest insects: northern indoor mosquito imago (female) test conditions:

temperature: 26-30 DEG C

Support material (honeycomb): 70X 15mm

The dosage is as follows: 500mg of the honeycomb shaped agent-holding material used herein was prepared as follows. Firstly, 80g/m²The bleached kraft paper sheet (corrugated groove height: about 2mm) was laminated to prepare a honeycomb (impregnated body) of 70X 15mm, and then the honeycomb was impregnated with 3ml of an acetone solution containing about 500mg of the agent, and after the acetone was volatilized, it was set in an apparatus for controlling pests.

The pest control ingredients used in the tests were: テラレスリン, ェンペントリン, プラレトリン, フラメトリン, ェスバィォ - ル and pyrethrum.

The vapor pressure values at 30 ℃ on the cox plots of the pest control ingredients used in the tests are shown in table 3.

TABLE 3

Vapor pressure value (mmHg) of the agent at 30 ℃

ェンペントリン 1.5×10^-3

テラレスリン 6.6×10^-4

フラレトリン 1.3×10^-4

フラメトリン 4.5×10^-4

ェスバィォ - ル 1.2.2X 10^-4

1.7X 10 of deinsectization chrysanthemum^-4 Test results

As can be seen from Table 2, the vapor pressures at 30 ℃ of the pest control ingredients used in the tests were each small, only 1X 10^-3～1×10^-6mmHg, it was judged that a lethal activity of 100 to 80 (%) was obtained by passing an air stream through the holding material without heating according to the method of the present invention, and the method showed an extremely excellent pest extermination effect.Example 2

In a volume of 24cm³The spatial area of (a) was tested for insecticidal efficacy against a northern indoor mosquito using the apparatus for measuring concentration of volatile matter in air shown in fig. 6.

The fan-type pest control device of the structure shown in fig. 2 is installed at a designated position. The device was a 70X 15mm honeycomb impregnated with 4.5g ェンペントリン. In addition, a commercially available liquid type electronic mosquito repellent (use プラレトリン) was used for comparison.

20-25 female mosquitoes and adults in the north for test are placed into a cage, and 1 cage is arranged at two positions 150cm away from the ground and 75cm away from the ground in a room. Each insect killer was used for 2 hours. The cage was placed in a room and the number of stunned mosquitoes was counted every 10 minutes from the start of the test. After the test was completed, the insects to be tested were collected in a plastic cup, and the number of deaths after 24 hours was calculated. The test results are shown in table 4.

In average KT₅₀The values are compared, in terms of a faint effect,

fan type pest control device (using プラレトリン) as liquid type electronic mosquito repellant

Compared with the lethality after 24 hours, the lethal effect is as follows:

fan type pest control device > liquid type electronic mosquito repellant (use プラレトリン)

TABLE 4

	KT50(minute)			Mortality after 24 hours (%)
							Sample (I)	Height from ground			Height from ground
	150cm	75cm	Average	150cm	75cm	Average
							Fan type pest control device	69	60	64	51	59	55
Liquid electronic mosquito-expelling device	102	82	92	11	15	13

Example 3

At 24cm³The spatial region of (a) was tested under the following conditions, and the lodging rate and mortality rate (%) of each cockroach were compared after 24 hours.

The pest control device of the present invention was installed in the center of the floor surface of the above-mentioned space area, and 2 cups containing 20 cockroaches were placed at diagonal positions of the same floor surface, and the pest control ingredients listed in table 5 were continuously exposed for 24 hours to be released to the outside. In this case, two kinds of cockroaches, german cockroach (sensitive) and nicotinic acid cockroach (sensitive), were used as cockroaches.

A honeycomb (FIG. 3) having a size of 70X 15mm was impregnated with each of 0.1g of the pest control component, and then placed in a pest control device.

The measurement results are shown in Table 5.

TABLE 5

		Pest control ingredient
						ベンフルスリン		ェンペントリン
		Sensitivity to German cockroach	Sensitivity to smoky cockroach	Sensitivity to German cockroach	Sensitivity to smoky cockroach
						Halation rate (%)	1hr	0	0	0	0
2hr	0	0	0	0
					4hr		0	5.0	0	0
24hr	87.5	6.3	90.0	65.0
					Mortality rate		48hr	97.5	7.5	90.0	75.0

Example 4(formulation for impregnation of Honeycomb) No.1

ェンペントリン 4.0g

0.05g of N-benzoylvaline

0.50g ethanol

ィルガノックス 1010(チバガィギ one) 0.1g

Tetrakis [ methylene 3- (3, 5-di-tert-butyl)

-4-hydroxyphenyl) propionate ]

The combined solution was immersed in a 66X 15mm honeycomb carrier. No.2

ェンペントリン 1.0g

2, 2' -methylenebis (4-methyl)

-6-tert-butylphenol) 0.15g

Synergistic Ether 1.5g

The combined solution was immersed in a 50X 15mm honeycomb carrier.

No.3

ベンフルスリン 0.5g

Bisphenol A0.02 g

Isostearic palmitate 0.05g

The combined solution was immersed in a 35X 10mm honeycomb carrier. No.4

ベンフルスリン 2.0g

N-hexanoyl- ε -aminocaproic acid 0.03g

Isopropyl myristate 0.15g

The combined solution was immersed in a honeycomb carrier of 70X 35X 15 mm. No.5

1.5g of pyrethrum propenyl

S-421 1.5g

0.2g of 2, 6-di-tert-butylhydroxytoluene

The combined droplets were dropped into a 50X 20mm honeycomb carrier. No.6

1.3g of chrysanthemum indicum

4, 4' -Butylene-bis (3-methyl)

-6-tert-butylphenol) 0.01g

The combined droplets were dropped into a 50X 20mm honeycomb carrier. No.7

プラレトリン 0.5g

2-hydroxy-4-n-octyl benzophenone 0.2g

Dropping the combined liquid drop into a honeycomb carrier of 30X 20mmExample 5(solution formulation) No.8

ェンペントリン 5.0g

0.6g of 2, 6-di-tert-butylhydroxytoluene

Perfume 0.1g

Kerosene 35ml No.9

ベンフルスリン 0.6g

0.1g of 2, 6-di-tert-butylhydroxytoluene

Perfume 0.1g

Isopropyl myristate 8ml

Kerosene 32ml No.10

プラレトリン 1.3g

0.1g of 2, 6-di-tert-butylhydroxytoluene

Perfume 0.1g

Kerosene 40ml

Example 6

(Water-based formulation) No.11

ベンフルスリン 0.6g

Butyl carbitol 25ml

25ml of water

Butylhydroxytoluene 0.20g No.12

ェンペントリン 2.0g

Butyl carbitol 25ml

Propylene glycol 17ml

8ml of water

Butylhydroxytoluene 0.20g

Possibility of industrial utilization

At present, methods and devices for controlling pests using effective pest control agents are to volatilize and diffuse the effective components of the agents under heating. However, with the method and apparatus for controlling pests used under heating, there is a risk of temperature rise and burning of the used appliances and their surroundings.

On the other hand, in a method for controlling pests using a chemical such as DDVP which can exert an effect under non-heating conditions, there is a problem in the safety of the chemical.

As a result of systematic studies on the temperature-vapor pressure relationship of pest control components in agents which are safe and have an effective pest control effect and which can release pest control components at a concentration sufficient for exterminating pests by blowing air only in a non-heated state, the present inventors have conducted systematic studies using a cox plot, and have found that the vapor pressure at 30 ℃ is preferably higher than 1X 10^-7mmHg is a pest control agent which is hardly volatile at normal temperature and has a boiling point of at least 120 ℃/1mmHg, that is, a pest control agent which is safe and has an effective pest control effect, and can obtain a very excellent pest control effect by blowing air only in a non-heated state.

Therefore, according to the present invention, it is highly possible to develop a pest control method and a pest control device which are simple and highly safe.

Claims (7)

1. A method for controlling pests, characterized in that a formulation in which a pest control ingredient is at least one selected from the group consisting of those having a vapor pressure of 1 x 10 at 30 ℃ is held in a carrier^-7mmHg to 1.5X 10^-3mmHg compound to make a material to hold the formulation; arranging the agent-retaining material so that an air flow generated by a fan is imparted to and flows into the agent-retaining material; and releasing the pesticidal component from the holding material to the air under non-heating conditions to control pests.

2. A method for controlling pests, characterized in that a formulation in which a pest control ingredient is at least one selected from the group consisting of those having a vapor pressure of 1 x 10 at 30 ℃ is held in a carrier^-7mmHg to 1.5X 10^-3mmHg of a compound selected from the group consisting of 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, d-methyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, and mixtures thereof, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate, (+) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate, and/or isomers and/or analogs thereof, the preparation-retaining material being configured such that a gas stream generated by one fan is imparted to and flows into the preparation-retaining material; and releasing the pesticidal component from the holding material to the air under non-heating conditions to control pests.

3. A pest control device, comprising a body having a vent connected to a vent; the device also includes a formulation-retaining material disposed at one or more locations within the aeration device, the formulation-retaining material comprising a formulation retained in a carrier, wherein the formulation-retaining material contains at least one pesticidal component selected from at least one pesticidal component having a vapor pressure at 30 ℃ of 1 x 10^-7mmHg to 1.5X 10^-3Compounds of mmHg; the air flow generated at the vent is applied to and flows into the agent retaining material provided in the venting device, so that the pesticidal component is released in a non-heated condition.

4. A pest control device, comprising a body having a vent connected to a vent; theThe device also comprises a formulation-retaining material disposed at one or more locations within the venting device, the formulation-retaining material comprising a formulation retained in a carrier, wherein the formulation-retaining material contains at least one pesticidal component selected from at least one having a vapor pressure at 30 ℃ of 1 x 10^-7mmHg to 1.5X 10^-3A compound of mmHg which is 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate, d-methyl-3-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, m, (+) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate, and/or isomers thereof and/or analogs thereof; the airflow generated at the vent is applied to and flows into the agent-retaining material to release the pesticidal component without heating.

5. The pest control agent used in the pest control method according to claim 1 or 2 or the device for controlling pests according to claim 3 or 4, characterized by containing at least one pesticidal component, wherein the at least one pesticidal component is at least one selected from the group consisting of those having a vapor pressure of 1 x 10 at 30 ℃^-7mmHg to 1.5X 10^-3A compound of mmHg which is 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate (+) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyldl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate, and/or isomers and/or analogs thereof.

6. A carrier for constituting a preparation-holding material which does not block the flow of gas in the gas passage when the preparation-holding material is disposed in the gas passage of the pest control device as claimed in claim 3, wherein the preparation-holding material is constituted of a preparation held in a carrier, and the preparation contains at least one pesticidal component which is at least one selected from the group consisting of those having a vapor pressure of 1 x 10 at 30 ℃^-7mmHg to 1.5X 10^-3Compounds of mmHg.

7. A carrier for constituting a preparation-holding material, characterized in that said preparation-holding material holds at least one pesticidal component selected from the group consisting of at least one pesticidal component having a vapor pressure of 1 x 10 at 30 ℃ in its carrier^-7mmHg to 1.5X 10^-3A compound of mmHg, said compound being: 1-ethynyl-2-methyl-2-pentenyl dl-cis/trans-3- (2, 2-dimethylvinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, d-trans-2, 3, 5, 6-tetrafluorobenzyl-3- (2, 2-dichlorovinyl) -2, 2-dimethyl-1-cyclopropanecarboxylate, (5-benzyl-3-furyl) methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl-d-cis/trans-chrysanthemate, di-methyl-2-methyl-d-methyl-1-methyl-chrysanthemate, di-methyl-2-methyl-d-methyl-ethyl-chrysanthemate, di-methyl-ethyl-1-cyclopropanecarboxylate, di-methyl-3-, (+) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (+) -cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2, 2, 3, 3-tetramethylcyclopropanecarboxylate, and/or isomers thereof and/or analogs thereof; the holding material does not block the flow of gas to the vent.