JP2003144033A - Rotary fan type agent diffusing fan useufl for diffusion of pest control agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agent diffusing fan which can volatilizes an pest control agent more sufficiently excellently than the conventional method with which an pest control agent is volatilized by blowing air of a blower against a carrier holding the pest control agent. SOLUTION: This rotary fan type agent diffusing fan comprises a circular blade part which has a great number of blades and in which spaces between the blades are opened and opening parts are formed and a drive mounting part. The blade part holds the pest control agent and the drive mounting part is rotated by a motor. Preferably the blades hold the pest control agent on their surfaces or insides and a bag or a container storing the insect pest exterminator is arranged in the inner peripheral side or outer peripheral side of the blade part.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention has a high volatilization efficiency,
The present invention relates to a method for diffusing a volatile drug capable of increasing a volatile amount and a drug diffusion material used for the method.

[0002]

2. Description of the Related Art Conventionally, in diffusing a volatile drug to a predetermined place, usually, the volatile drug or a carrier holding the volatile drug is installed at a predetermined place, and the volatile drug is simply volatilized by diffusion. However, since it takes time, if you want to diffuse quickly, either heat the carrier that holds the volatile drug, or blow air with a blower and apply it to the carrier that holds the volatile drug. A method of forcibly volatilizing the drug is known.

[0003]

When the drug held on the carrier is forcibly volatilized by the blower, it may be because the blown air does not contact the carrier holding the volatile drug sufficiently. Since the wind is weak, the wind force is small even when it comes into contact, and the force that promotes the volatilization of the drug from the carrier is small. Therefore, satisfactory diffusion of the drug was not performed.

The present invention provides a method capable of sufficiently volatilizing a volatile drug as compared with the case where the volatile drug is forcibly volatilized by blowing with such a blower, and a drug diffusion material carrying the drug therefor. The purpose is to do.

[0005]

Means for Solving the Problems The present invention has been made by finding that when a drug diffusion fan holding a volatile drug is driven, the volatile amount thereof is significantly increased. The above objective was achieved. (1) having a large number of blades, a circular blade portion having an opening between the blades to form an opening, and a drive mounting portion, the blade portion holds a pest control agent,
A rotary fan type drug diffusion fan characterized in that the drive mounting portion is rotated by a motor.

(2) The blade (1) is characterized in that the blade holds a pesticide on its surface or inside.
The described rotary fan type drug diffusion fan. (3) The rotary fan type drug diffusion fan according to (1) above, wherein a bag or container containing a pest control agent is provided on the inner peripheral side or the outer peripheral side of the blade portion. Examples of volatile agents used in the present invention include pest control agents (insecticides, acaricides), bactericides, repellents, aromatics (perfumes, herbs, etc.), pharmaceuticals (menthol, eucalyptus oil, etc., trachea, case) Various drugs used for the purpose such as inhalation drug) can be used. Typical agents include the following.

(I) Insecticides and acaricides (1) Pyrethroid drugs dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis / trans-chrysanthemate (generic name arethrin : Trade name Pinamine) -dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-cis / trans-chrysanthemate (Product name Pinamine Forte: Sumitomo Chemical Co., Ltd., hereinafter "Pina" Minforte ")

Dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate (trade name Bio-arethrin: manufactured by Yuclaf) d-3-allyl-2-methyl- 4-oxo-2-cyclopentenyl d-trans-chrysanthate (trade name: Exulin: manufactured by Sumitomo Chemical Co., Ltd.) (1,3,4,5,6,7-hexahydro-1,3-)
Dioxo-2-indolyl) methyl dl-cis / trans-chrysanthemate (generic name phthalthrin: trade name neopinamine, hereinafter referred to as "neopinamine")

(1,3,4,5,6,7-hexahydro-1,3-dioxo-2-indolyl) methyl d-
Cis / trans-chrysanthate (trade name: neopinamine forte: manufactured by Sumitomo Chemical Co., Ltd.) (5-benzyl-3-furyl) methyl d-cis / trans-chrysanthate (generic name resmethrin, trade name Chris Ronforte: Sumitomo Chemical Co., Ltd., hereinafter referred to as "Kryslon Forte")

3-phenoxybenzyl-dl-cis /
Trans-3- (2,2-dichlorovinyl) -2,2-
Dimethyl-1-cyclopropanecarboxylate (generic name permethrin, trade name Exmine: Sumitomo Chemical Co., Ltd.) 3-phenoxybenzyl-d-cis / trans-chrysanthemate (generic name phenothrin: trade name Smithlin: Sumitomo Chemical Co., Ltd. Ltd., hereinafter referred to as "Smithrin")-α-cyano-3-phenoxybenzyl 2- (4-chlorophenyl) -3-methylbutyrate (generic name fenvalerate)

.Alpha.-Cyano-3-phenoxybenzyl
Cis / trans-2,2,3,3-tetramethylcyclopropropanecarboxylate (generic name phenpropatrine, hereinafter referred to as "phenpropatrine"). 1-ethynyl-2-methyl-2-pentenyl dl-
Cis / trans-chrysanthate (generic name empensulin, hereinafter referred to as "empensulin")-2,3,4,5,6-pentafluorobenzyl-dl
-Cis / trans 3- (2,2-dichlorovinyl)-
2,2-Dimethyl-1-cyclopropanecarboxylate (generic name fenfluthrin, hereinafter referred to as "fenfluthrin")

1-ethynyl-2-methyl-2-pentenyl dl-cis / trans-3- (2,2-dichlorovinyl) -2,2-dimethyl-1-cyclopropanecarboxylate (hereinafter referred to as "M-108C" )) 1-ethynyl-2-methyl-2-pentenyl cis /
Trans-2,2,3,3-tetramethyl-1-cyclopropanecarboxylate (hereinafter referred to as “M-108B”)

. (+)-2-Methyl-4-oxo-3-
(2-propynyl) -2-cyclopentenyl (+)-cis / trans-chrysanthemate (trade name Etok: Sumitomo Chemical Co., Ltd.) d-trans-2,3,5,6-tetrafluorobenzyl-3 -(2,2-Dichlorovinyl) -2,2-dimethyl-1-cyclopropanecarboxylate (generic name benfluthrin)

.2,3,5,6-tetrafluoro-4-
Methylbenzyl-3- (2-chloro-3,3,3-trifluoro-1-propenyl) -2,2-dimethyl-1-
Cyclopropanecarboxylate (generic name tefluthrin) ・ (±) α-cyano-3-phenoxybenzyl (+)
-Cis / trans-chrysanthemate (trade name Gokirato: Sumitomo Chemical Co., Ltd.)

(2) Organophosphorus agent-O, O-dimethyl O- (2,2-dichloro) vinyl phosphate (hereinafter referred to as "DDVP")-O, O-dimethyl O- (3-methyl-4-) Nitrophenyl) thionophosphate / O, O-diethyl O
-2-Isopropyl-4-methyl-pyrimidyl- (6)
-Thiophosphate-O, O-dimethyl S- (1,2-dicarboethoxyethyl) -dithiophosphate

(3) Carbamate type drug O-isopropoxyphenyl methyl carbamate (hereinafter referred to as "BIGON")

(4) Other agents ・ Benzylbenzoate ・ Isobonyl thiocyanoacetate (hereinafter referred to as "IBT
A))-dehydroacetic acid-piperonyl butoxide (hereinafter referred to as "P.B.")-Paraoxybenzoic acid-phenyl salicylate-S-421-Cinepyrine 222 (registered trademark) (N- (2-ethylhexyl) -bicyclo [2,2] 2,1] -hepta-5-ene-2,3-dicarboximide) N, N-diethyl-m-toluamide (hereinafter referred to as "diet") 5-methoxy-3- (0-methoxyphenyl)- 1,
3,4-oxadiazol-2 (3H) -one (generic name methoxadiazone, trade name Elemic: manufactured by Sumitomo Chemical Co., Ltd.)

(II) Bactericide Sn-butyl-S'-p-tert-butylbenzyl N-3-pyridylimide dithiocarbonate (trade name Denmart: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as "Denmart") -N- (3 ', 5'-dichlorophenyl) -1,2-dimethyl-cyclopropane-dicarboximide (trade name Sumirex: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as "Sumilex")-Perillaldehyde allyl Isothiocyanate / parachlorometaxylenol (hereinafter referred to as "PCMX")

(III) Repellent ・ N, N-diethyl m-toluamide (hereinafter referred to as "diet")-Di-n-butyl succinate (hereinafter referred to as "DNBS")-di-n-propyl isocinchomeronate (hereinafter referred to as "n""D
The classification of the above-mentioned drugs is based on their main efficacy, and some insecticides are used as acaricides, and the components of the potency enhancer described below are acaricides. The above classification is for convenience only because some of these drugs are used depending on the purpose of use.

Various additives such as antioxidants, potency enhancers, volatilization rate improvers, deodorants, and fragrances that are commonly used can be optionally added to the above insecticides and the like used in the present invention. . Potency enhancers include piperonyl butoxide, N-propylisome, cinepyrine 222
(Registered trademark), Cinepyrine 500, Reisen 384,
IBTA, S-421 and the like, volatile compounds such as phenethyl isothiocyanate and dimethyl highmix acid as a volatility improver, and lauric acid methacrylate (LM) as a deodorant.
A) etc. are citral, citronellal,
Examples include anethole and the like.

The place where the pests can be exterminated by the pest control agent is not limited at all, but it is preferable that the pests are divided as a fixed space. For example, there are houses, vinyl houses, septic tanks, etc., and the pests that live there are targeted. Affects flies, mosquitoes, cockroaches, indoor dust mites, and nuisance pests that enter the house, clothing pests such as squid, koga, and beetle in the house, and crops cultivated there in the vinyl house. Pests to be given, Nukaka, flies, mosquitoes and mites in the poultry house, and butterfly flies and mosquitoes in the septic tank are exemplified.

The shape of the drug diffusion material used in the method for diffusing a volatile drug of the present invention may be any shape as long as the volatile drug is well diffused when it is driven. Any substance that disturbs the air around the material or disturbs the boundary layer of the air to promote the diffusion of the drug may be used. Among these shapes, those having a large effect of disturbing air include those having a blade of a blower, such as a fan, and it is preferable to use these, but when using rotation as a driving means, the air is disturbed. In the sense that it has a function to operate, it may have a disk shape without a blowing effect.
Further, when vibration is used as the driving means, the shape of the diffusing material need only vibrate, so that it may be a flat plate or a sheet. Among these shapes, the fan is the most preferable because it has a blowing effect. Hereinafter, the fan will be described in detail.

The shape of the fan is not limited to a screw shape or a propeller shape, but may be a flat plate, a water turbine type, a rotary fan type or the like. A screw shape or a propeller shape is preferable when performing a large blowing action, and there is an advantage that the amount of volatilization can be increased by blowing air, but when it is not necessary to perform a blowing action, it can be rotated to generate an air flow in the surroundings. It may be a disc or the like. The shape of the fan varies depending on the method of holding the drug in the fan, but the method of holding the drug will be described later. For example, in the case where the inside of the fan is filled with a medicine inside the cavity, the shape is such that the cavity can be formed.

Also, openings can be provided in each blade forming the fan to increase the amount of air contacting the fan. For example, the drug can be efficiently evaporated by providing the blade with a large number of openings.
The openings may have various shapes such as a lattice shape and a honeycomb shape in addition to the mesh shape, and the openings are preferably provided as uniformly as possible. The shape of the blade forming the fan is determined by the shape of the fan described above, but may be a hollow shape instead of a simple plate shape. The thickness of the blade may be such that, when the material forming the blade contains a volatile chemical, it has a sufficient holding amount to give a sufficient volatile amount, but if it is too thick, the chemical Since it does not diffuse to the surface, it is wasted, so select an appropriate thickness. It is preferable that the blades constituting the fan have the same weight and the same air resistance as possible so that they can be balanced during rotation.

When the fan has a shape having a blade, the blade itself may have a detachable structure because of the method of holding a volatile chemical described later. An example of a rotary fan type which is one type of fan used in the present invention is shown in FIGS. FIG. 1 is a perspective view of a rotary fan type drug diffusion fan (diffusion material) 1 that holds a drug bag 7 in which a volatile drug is contained in a thin bag, and FIG. 2 is a plan view of the fan. 3 is a perspective view of the fan body of FIG. 1 before assembly.

The main body of the fan of FIG. 1 comprises a blade portion 2 and a drive mounting portion 3 as can be seen from FIG. 3, and the blade portion 2 has a large number of vertical blades 5, with the blades 5 being open between them. And the opening 6 is formed. Drive mounting part 3
3 has a pedestal portion 8 in the center as shown in FIG. 3 and a shaft portion 4 connected to a motor (not shown) in the lower portion. The inner diameter of the blade 2 is slightly smaller than the inner diameter of the blade 2, and the blade portion 2 is fitted and supported therein. Moreover, as shown in FIG. 1, the gap between the two is such that when a thin medicine bag 7 is additionally provided on the inner peripheral side of the blade portion 2 and the blade portion 2 is fitted on the base portion 8, the medicine bag 7 The lower end of is supported by being sandwiched between the two. The drug diffusion fan in the supported state is as shown in the plan view of FIG. 2, and the drug bag 7 is provided along the inner peripheral side of the blade 2. Therefore, it is preferable that the size of the medicine bag 7 is substantially equal to the length and height of the inner circumference of the blade portion 2. The material of the drug bag shall be such that the volatile drug inside will easily volatilize through the bag.

In the drug diffusion fan 1 shown in FIGS. 1 to 3, the blade portion 2 has a shape as shown in the drawing, for example, a shape integrally molded with a synthetic resin, but the blade portion 2 is assembled. As shown in FIG. 4, as an example, it is a rectangular shape made of a relatively flexible material and is provided with fasteners 9 and hooks 10 at both ends. The blade portion 2 is wound around the base portion 8 of the drive mounting portion 3, and the hook 9 is attached to the fastener 9.
You may make it form the circular blade part 2 by multiplying.

When the medicine diffusion fan 1 shown in FIGS. 1 and 2 is rotated by transmitting the rotation of the motor to the shaft portion 4, wind is generated by the blade 5 of the blade portion 2 and appears on the surface of the medicine bag 7. Disperses volatile chemicals well. The shape and arrangement of the blade 5 in the blade portion 2 can take various shapes in order to improve the diffusion thereof. The drug diffusion fan shown in FIGS. 1 to 4 described here is merely an example, and a sheet containing the drug may be used instead of the bag containing the drug, or the drug may be contained in a container. It may be easier to form the blade with synthetic resin containing the drug, but in order to reduce the risk of handling, it is a shape or structure that does not touch the drug-containing part directly when mounting. Is desirable.

In terms of actual use, it is sufficient to use a fairly small blower for a space such as a room of a normal house, and the rotation speed of the fan is 300 rpm or more, preferably 500 to 10,000r
It is preferable to use it at about pm. A motor, a mainspring, or the like can be used as the driving unit of the fan. Even if a fan that is driven by a small motor driven by a dry battery or the like is used for the above-mentioned space such as the living room, it is sufficiently effective.

There are various means for holding the volatile chemicals in the fan, roughly classified into (1) a method of directly holding the fan and (2) a method of indirectly holding the fan. In the method (1), (a) the fan itself is made of an oil-absorbing material (for example, resin) mixed with a volatile agent, and (b) the fan or the inner layer near the surface is made of a porous oil-absorbing material. The porous oil-absorbing material portion may be configured to be impregnated with a volatile chemical, and means for holding the volatile chemical inside the fan may be used, and (c) the fan surface contains the volatile chemical. Means for holding the fan surface, such as applying liquid, can be used.

In the method (2), (a) the fan itself having a volatile drug enclosed therein is sandwiched or stored.
(B) The surface of the fan may be supported by a piece of oil-absorbing material containing or impregnated with the volatile agent, and (c) the fan may be fixed with the volatile agent enclosed therein. it can. When the volatile chemical held in the fan as described above is completely consumed, it is necessary to replenish the volatile chemical for continuous use. ), Replace the fan itself, (b)
In the impregnation type of (c), the volatile chemical may be supplied by impregnation with a solution. In the method of (2),
In both (a) and (c), the one in which the volatile chemical is enclosed may be replaced, and in (b), the oil-absorbent material piece may be replaced.

Further, as a modification of these methods, only the blade of the fan may be made of an oil-absorbing material mixed with a volatile agent and replaced. In the method (2), the volatile drug is encapsulated in a container having a membrane part made of at least a gas permeable film or a container having permeable micropores. Is preferably used. As these containers, those whose shape is easily held on the fan surface are preferable, and examples thereof include flat ones, but other shapes may be used. The oil-absorbent material piece containing or impregnated with the volatile chemical is preferably in the shape of a plate, a sheet or the like.

As the gas permeable film for enclosing the volatile drug, ethylene vinyl acetate polymer [trade name D2021 (vinyl acetate 10 wt%), H2
020 (vinyl acetate 15 wt%), K2013
(Vinyl acetate 25 wt%), D2011 (vinyl acetate 5 wt%) (all manufactured by Sumitomo Chemical Co., Ltd.)], polydimethylsiloxane, natural rubber, polybutadiene, ethyl cellulose, polychloroprene, etc. Film is also used. The thickness of the film is such that the volatile drug encapsulated therein has a sustained-release action such that an effective amount of the volatile drug passes through the film but an excessive amount does not. However,
It must have sufficient strength to prevent volatile chemicals from leaking. The thickness is specifically ethylene-
In the case of a vinyl acetate polymer film, it is, for example, 100 μm, but it may be thinner or thicker.

Examples of the oil absorbing material include pulp,
Cloth, natural fiber (eg absorbent cotton), sponge, inorganic powder,
Porcelain, ceramics, activated carbon, glass wool, asbestos, acrylic lipophilic polymer (Kyowa Gas Chemical Co., Ltd.), acrylic highly oil-absorbent resin KX-OA 100-600 (Nippon Shokubai Co., Ltd.), polypropylene fiber (Registered trademark Teijin Orthorp, manufactured by Unicel Co., Ltd.), polypropylene fiber nonwoven fabric (registered trademark Toughness Oil Blotter, manufactured by Mitsui Petrochemical Co., Ltd.), special linear polymer (registered trademark Wosep, manufactured by Toray Co., Ltd.), etc. One of them or a combination of two or more thereof can be mentioned. It is only necessary to select and use a material suitable for the above method from the above materials.

In (a) of the above method (1), 100 parts of the volatile chemicals are contained in the oil absorbing material (for example, resin) that constitutes the fan.
It is preferable to contain in the range of ~ 500 mg / g.
In (b) and (c), a suitable usage amount is set per surface area of the fan. In (a) and (c) of the above (2) method,
Since it is a method of encapsulation, when the volatile drug is used as it is, the amount used is not particularly limited, but when the volatile drug is contained in the oil-absorbent material or is impregnated, that is, (b In the case of), the content and the like are the same as in the case of the above method (1).

Further, when the volatile chemical held in the fan is hard to vaporize at room temperature and it is desired to increase the volatile amount, a heater is placed in the air introduction passage of the blower to preheat the air contacting the fan. Alternatively, a heater may be placed near the fan to heat the surface of the fan. The heating temperature is 20 to 100 ° C from room temperature,
Alternatively, it is sufficient to raise it further.
In the case of drugs with strong volatility such as empensulin and benfluthrin, an increase of about 20 to 30 ° C is effective, but for drugs with low room temperature volatility, such an increase has no effect, so a little higher It is necessary to let

Further, in this case, the temperature of the fan can be raised in a short time and the initial volatilization amount can be increased by adding a heat conductive substance such as aluminum powder or iron powder to a part of the fan. . Further, the present invention can be applied to vibration and other methods, not rotation, to drive the diffusion material, and as the vibration, for example, a vibrator or a vibrator using an electrostrictive element, a piezo fan is used. Can be used.

[0038]

[Function] In the conventional technology in which air is blown by a blower to a carrier holding a volatile chemical to be volatilized, the mass transfer rate is determined by the wind speed, etc., and the wind speed is not so large, and the entire air volume effectively acts on the carrier. However, in the present invention, the drug is directly or indirectly held by a diffusion material, for example, a fan, etc., and since this fan can increase the rotation speed, the contact speed with air is The mass transfer rate, and thus the mass transfer rate, can be significantly increased due to the availability of fan surfaces that are significantly larger than the technology. Therefore, in the present invention, the amount of diffusion of the drug can be increased, and the drug can be diffused extremely efficiently.

Further, at that time, as described above, if the heating is performed, the diffusion amount can be made sufficiently large.

[0040]

EXAMPLES The present invention will be specifically described below with reference to examples. However, the present invention is not limited to these examples. Example 1 A motor driven by a C alkaline battery (rotation speed 210
A fan having a diameter of 2.5 cm and four blades was attached to a rotation shaft of 0 rpm). As this fan, one having the chemicals shown in Tables 1 and 2 and having the fan itself or the kind of the base material to be held by the fan was prepared.

[0041]

[Table 1]

[0042]

[Table 2]

Note) 1. "Kneading" of holding method in Tables 1 and 2
The "adhesion" means the following. The “kneading” means kneading and molding the active ingredients of the material constituting the fan by a conventional method. “Adhering” means adhering a base material holding an active ingredient to a fan. 2. "Part by weight: w / w", which represents the amount of the active pharmaceutical ingredient added
"%" Is the weight% of the active ingredient contained in the fan or the base material.
Indicates.

Example 2 As a fan of the present invention, four blades (2.5 cm in diameter) molded from a mixture of 1.4 g of polyvinyl chloride resin and 10 wt% of empensulin were used. The test was conducted. (Insecticidal activity test against insects) A cylindrical water tank made of glass with a volume of 0.012 m ³ (inner diameter 23 cm, height 28.6 c)
m), put cotton impregnated with about 50 ml of water on the bottom, test about 50 adults of Drosophila melanogaster, and install a blower having the fan of the present invention on the side surface (5 cm from the top) of the space, 2100 rp due to the motor connected to it
Allowed to rotate in m, which was rotated to spread the drug. However, the opening of the water tank is covered with a polyvinylidene chloride sheet to form a closed space.

The difference in the volatilization / diffusion of the drug in this test was evaluated by the difference in the knockdown time of adult Drosophila melanogaster adults tested in the space. Also, as a control, a fan holding a drug (same weight) was simply suspended in the center of the space. As a comparison, a polyvinyl chloride resin having the same shape as the fan of the present invention was hung near a side surface of the space by suspending a plate-shaped body formed by kneading 10 wt% of empensulin in 1.4 g of polyvinyl chloride resin. Place a fan made of the same material as the fan of the present invention, 2
It was rotated at 100 rpm, and the blown air was applied to the plate-shaped body.

The test results are shown in Table 3.

[0047]

[Table 3]

As is clear from Table 3 above, according to the present invention, since the volatile drug was directly held by the fan, the knockdown time of the sand fly was considerably shortened, and the volatile drug was volatilized into the space. It can be seen that the diffusivity is promoted.

Example 3 An ethylene-methyl methacrylate copolymer resin (hereinafter referred to as "EMMA resin") was kneaded with a plasticizer dimethyl phthalate and empensulin to form a sheet, and the sheet was cut to obtain EMMA containing empensulin. Manufacture resin plate. The initial content of empenthrin in this resin plate was 9.6175 w / w%. A blade (blade, thickness 1 mm) was attached to a member serving as the center of the fan with the four plates described above to prepare a fan (diameter 4.6 cm) as a diffusion material. The total weight of this blade portion was 1.7973 g.

This fan was rotated for 30 days by a high rotation type motor having a rotation speed of 8,500 rpm, extracted with acetone for 1 day, and the amount of empenthrin was quantified by a gas chromatography column. The total volatilization amount was 21.9 mg. there were.
Further, when this fan was rotated by a low rotation type motor having a rotation speed of 2,130 rpm, the total volatilization amount of empenthrin was about 15.9 mg. If this fan is driven by a low speed motor such as 400 to 800 rpm which is driven by a dry battery, the amount of empenthrin volatilized is smaller, and in this case, it is suitable for long-term use.

Example 4 As a fan of the present invention, a 4-blade blade (thickness: 2 mm) having a diameter of 8.0 cm was used, which was obtained by kneading 10 wt% of empensulin in 10 g of EMMA resin. (Insecticidal activity test against Culex pipiens) Volume 22.5 m ³
Place a kennel (60 × 72 × 90 cm) in a space separated by a net of (3 × 3 × 2.5 m), put a medium-sized mongrel dog in the kennel, and enter a wire net into which the Culex pipiens can enter. I installed it. Then, the blower having the fan of the present invention obtained in Example 4 was mounted downward on the top of the kennel, and the fan was rotated at about 2,000 pm to continuously diffuse the drug. Female test worms in the space were allowed to stand from 17:00 to 9:00 the next day, and then all test worms were collected to determine the number of blood-sucking solids, which were measured after 0, 5, 11, and 15 days. The results are shown in Table 4. In addition, as a control, a fan of the same type made of polyvinyl chloride resin that has not been treated with a chemical agent is used at about 2000 rpm.
I rotated it.

[0052]

[Table 4]

Example 5 A cotton cloth of 10 × 10 cm was placed on the center of the bottom surface in a closet having a volume of about 0.15 m ³ (50 × 55 × 55 cm), and 10 larvae of the third moth, 10 larvae, were released in the upper part. N on the top
o. 2 filter paper (made by Advantech Toyosha) about 1 in total
It was impregnated with an acetone solution containing 6.5 mg of empenthrin, and a fan with a fan (diameter 9 cm) attached to 8 blades was installed downward, and a motor connected to it could rotate it at about 2000 rpm. The drug was diffused by rotating and the number of astonishments and lethality were measured after 44 hours at room temperature. As a control, the total amount is about 49.
No. 0 impregnated with 0 mg of empensulin. Two filter papers were installed at the same position as the blower, and the same measurement was performed. The results are shown in Table 5.

[0054]

[Table 5]

Example 6 Test films of the types shown in Tables 6 and 7 (4 × 10c
m) was folded in two, and about 1.0 to 2.0 g of a volatile drug and 0.08 to 0.4 g of an oil-absorbing material (both shown in Table 6 and Table 7) were placed between the two and surrounded. To produce volatile drug encapsulants, and these encapsulants are attached to a motor and have an inner diameter of 3.3c in the shape shown in FIG.
m, outer diameter 4.7 cm, height 2.2 cm, and weight 5.
It was mounted in a cylindrical shape along the inside of the fan of 3 g to obtain the drug diffusion material of the present invention shown in Tables 6 and 7. The film "D2021" and the like in the table are the above-mentioned ethylene vinyl acetate polymers.

[0056]

[Table 6]

[0057]

[Table 7]

Test Example 1 Sample No. 3 of the above Example 6 1 to 10 were used, the above samples were driven by the motors shown in Tables 6 and 7, and the weight of the volatile drug inclusion body was measured over time, and the weight reduction amount was defined as the amount of empensulin volatilization. . The obtained measurement results are shown in FIGS. The motor used is driven by a single dry battery. In each figure, “F” indicates a decrease in motor output due to a decrease in voltage of the single dry battery, and “S” indicates exhaustion of the dry battery. When the motor is stopped, the symbol C indicates when the dry battery is replaced.

5 to 7, the vertical axis represents the weight of the enclosure and the horizontal axis represents the number of driving days. In FIG. 5, “●” indicates the sample No.
1, "○" is the sample No. 2 shows the change in the weight of the inclusion body,
In FIG. 6, “●” indicates the sample No. 3, "○" is sample N
o. 10 shows changes in the weight of the inclusion body of No. 10, and in FIG. 5, "●" is the sample No. 6,
“○” indicates the sample No. 7, "■" is the sample No. 8 and “Δ” are sample No. 9 shows the change in the weight of the inclusion body of No. 9.

Test Example 2 [Efficacy test against mosquitoes (Squid mosquitoes and Aedes albopictus) in outdoor kennels] Ventilated glass greenhouse (length 3.5)
m, width 2.5 m, height 3 m), place a wooden gauge containing a medium-sized mongrel dog, release the test insects (Squid mosquito, Aedes albopictus) in a glass greenhouse, and use a test fan containing Empensulin. About 2 to 3 hours before releasing the test insect, it was installed on the ceiling of the doghouse. However, the crossbreed dogs were kept in a closed kennel, and the entrance to the kennel was covered with wire mesh so that mosquitoes could pass through freely.

In the case of Culex pipiens, it was released at 5 to 6 pm in the evening, and at 9 o'clock the next morning, all solids were collected and the blood absorption rate was examined. Also,
In the case of Aedes albopictus, a daytime test was performed, and 4 hours after the animals were released, all solids were collected and the blood feeding rate was examined. The measurement results are shown in Table 8. From this Table 8, it is clear that the method of the present invention has a very high control effect.

[0062]

[Table 8]

[0063]

INDUSTRIAL APPLICABILITY According to the present invention, a volatile chemical is directly and / or indirectly held by a diffusing material to be driven,
The diffusion amount of the volatile drug can be significantly increased.
Therefore, it can be efficiently used in a wider atmosphere. In addition, since the diffusion efficiency is good, it can be performed using a smaller blower than the conventional method of blowing the air of the blower to the carrier carrying the volatile drug, for example, a dry battery for a normal living room. It is also sufficient to use a blower driven by a motor whose power source is.

Further, when it is desired to increase the diffusion amount of the volatile drug, it is possible to preheat the air introduced into the driving means by the heating means and / or heat the diffusion material itself. The amount of volatilization at that time is considerably larger than when the conventional carrier is simply heated. Further, when a diffusion material to be driven there, for example, a base material containing a volatile drug on the surface of a fan or a volatile drug inclusion body is supported, these base materials or the like are replaced, or if it is replenished with the drug, it is continuously used. When the fan itself or its blades or other material containing a volatile agent, such as synthetic resin, is used,
It is highly practical because it can be used continuously by replacing the fan itself or part of it.

[Brief description of drawings]

FIG. 1 is a perspective view of a rotary fan type drug diffusion fan that is one embodiment of the drug diffusion material of the present invention.

FIG. 2 shows a plan view of the drug diffusion fan of FIG.

3 is a perspective view of each element of the drug diffusion fan of FIG. 1 before assembly.

4 is a perspective view of a prefabricated blade unit used in the drug diffusion fan of FIG. 1. FIG.

FIG. 5 is a graph showing the change in the weight of the inclusion body with time when the drug diffusion material of Example 6 of the present invention was tested.

FIG. 6 is a graph showing the change in the weight of the inclusion body over time when another drug diffusion material according to Example 6 of the present invention was tested.

FIG. 7 is a graph showing the change in the weight of the inclusion body with time when another material for drug diffusion of Example 6 of the present invention was tested.

[Explanation of symbols]

1 Drug diffusion fan 2 blade part 3 Drive mounting part 4 shafts 5 blades 6 openings 7 drug bags 8 units 9 fasteners 10 hooks

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01N 57/12 A01N 53/00 502C 506Z F term (reference) 2B121 AA11 CA02 CA16 CA43 CA44 CA67 CC02 EA01 FA20 4H011 AC01 BB03 BB06 BB15 CC03 DA07 DA13 DD05

Claims (3)

[Claims] 1. A circular blade portion having a large number of blades, each blade being open between the blades to form an opening, and a drive mounting portion, wherein the blade portion holds a pest control agent. The rotary fan type drug diffusion fan is characterized in that the drive mounting portion is rotated by a motor. 2. The rotary fan type drug diffusion fan according to claim 1, wherein the blade holds a pesticide on the surface or inside thereof. 3. The rotary fan type drug diffusion fan according to claim 1, wherein a bag or a container containing a pest control agent is provided on an inner peripheral side or an outer peripheral side of the blade portion.