WO2014065150A1

WO2014065150A1 - Chemical volatilization body

Info

Publication number: WO2014065150A1
Application number: PCT/JP2013/077915
Authority: WO
Inventors: 鹿島　誠一; 智宏柿木; 由美川尻; 中山　幸治; 増夫松元
Original assignee: 大日本除蟲菊株式会社
Priority date: 2012-10-22
Filing date: 2013-10-15
Publication date: 2014-05-01
Also published as: JP2018011601A; AU2013335918B2; CN104735978B; KR102036951B1; JP6408091B2; TW201422156A; JP2017209111A; CN104735978A; JP6199877B2; AU2013335918A1; JPWO2014065150A1; TWI555470B; KR20150070368A; HK1211791A1; JP6529554B2

Abstract

Provided is a chemical volatilization body which maintains volatilization performance even if rained upon. A chemical volatilization body comprising a structural body provided with a mesh comprising a fibrous material including a normal-temperature-volatile pyrethroid insecticide component, is characterized in that: the fibrous material comprises resin filaments; and the water retention ratio, i.e. the amount of water capable of being retained by the structural body relative to the weight of the structural body, is in the range 0.005 to 0.5 inclusive.

Description

Drug volatilizer

The present invention relates to a chemical volatilizer for controlling and repelling flying insect pests such as mosquitoes and flyfish, and more particularly, a chemical volatilization composed of a fibrous material and comprising a mesh containing a room temperature volatile pyrethroid insect repellent component. It is about the body.

DESCRIPTION OF RELATED ART Conventionally, the insect repellent which exterminates and repels a pest by volatilizing a room temperature volatilizing insect repellent in the air is known.
For example, Patent Document 1 below discloses a chemical volatilization body using a plurality of net-like materials made of twisted yarns impregnated with an insect repellent component.
Patent Document 2 below discloses a molded article for controlling pests in which a plurality of grooves are formed on the surface of the resin molded article at intervals of 300 μm or less to prevent sticking of the pest controlling active ingredient.

Japanese Patent Laid-Open No. 2001-200299 JP 2009-19015 A

By the way, these insect repellents are often used suspended from windows or entrances. In this case, the insect repellents may be disturbed or unsightly. For this, a method of reducing the presence of the insect repellent by reducing the overall size of the insect repellent or reducing the thickness can be considered.

However, the chemical volatilizer described in Patent Document 1 basically comprises a flat mesh made of a resin that is non-adsorptive to insect repellent components such as polyethylene terephthalate (PET). Although the yarn is impregnated, it is only attached or impregnated near the surface of the yarn. Therefore, when the twisted yarn is cut into a cross section, depending on the shape of the cross section, the insect repellent component may be located at the center of the cross section and have a distance to the outer periphery, but the volatilization rate of the insect repellent component is extremely high. fast. For this reason, even if a relatively high insect repellent effect can be exhibited in the initial stage of use, it has not been able to sufficiently cope with a long-term use of up to 100 days or more. In addition, since the insect repellent component is located near the surface of the twisted yarn, there is a problem that when used outdoors, it is easily affected by rain and the loss of the insect repellent component cannot be avoided.

On the other hand, since the pest control molded article described in Patent Document 2 is carried in a state where the pest control active ingredient is kneaded in the resin carrier, the pest control active ingredient is compared with the chemical volatilization product described in Patent Document 1. It has the feature that it can be stabilized by suppressing the volatilization rate of the. However, when the volatilization rate is raining, volatilization of the pest control active ingredient may be inhibited by water, and the control effect may be reduced.

In view of the above-described conventional problems, the present inventors have prepared a chemical volatilization body in which a resin filament obtained by kneading and molding a room temperature volatile pyrethroid insect repellent component into a resin carrier, or a resin filament previously twisted. In the chemical volatilization body which impregnated the three-dimensional structure which comprised the mesh together with the room temperature volatility pyrethroid type insect repellent component, it examined earnestly about the case where it rained. That is, an object of the present invention is to provide a chemical volatilization body that retains the volatilization performance even when rain is applied to the chemical volatilization body.

The present invention has been found that the following constitution has an excellent effect for achieving the above-mentioned object.
(1) In the chemical volatilization body consisting of a structure having a mesh composed of a fibrous material containing a room temperature volatile pyrethroid insect repellent component, the fibrous material is composed of a resin filament, and the structure with respect to the weight of the structure A chemical volatilization body characterized by having a water retention ratio, which is an amount that the body can retain water, of 0.005 or more and 0.5 or less.
(2) The drug volatilizer according to (1), wherein the mesh size of the mesh portion of the structure is 10 mm ² or more and 200 mm ² or less.
(3) The drug volatilizer according to (1) or (2), wherein the resin filament is formed by kneading the room temperature volatile pyrethroid insect repellent component into a resin carrier, and then molding the resin filament.

Since the chemical volatilization body of the present invention is an amount that the structure can retain water relative to the weight of the structure, that is, the water retention ratio is within a predetermined range, when installed outdoors, a room temperature volatile pyrethroid insect repellent due to rain adhesion Control of volatilization of components can be improved.

It is a perspective view which shows the example of a planar net. (A) is a perspective view showing an example of a three-dimensional structure, (b) is a front view of (a), and (c) is a cc cross-sectional view of (b).

The chemical volatilization body of the present invention is a chemical volatilization body composed of a structure having a planar or three-dimensional mesh composed of a fibrous material containing a room temperature volatile pyrethroid insect repellent component.

[Room-temperature volatile pyrethroid insect repellent]
As said normal temperature volatile pyrethroid type insect repellent component, it has the property to volatilize in the air at normal temperature, and the vapor pressure in 25 degreeC is about 0.001 Pa or more and 0.1 Pa or less. Specific examples include at least one of metofluthrin, profluthrin, transfluthrin, and empentrin from the viewpoints of volatilization performance and safety. These insect repellent components have various optical isomers or geometric isomers, and any isomer can be used alone or in a mixture.

[Fibrous material]
The said fibrous material says what was comprised by the fiber form, and the thing etc. which twisted the long fiber (filament) itself, the long fiber or the short fiber, and were made into the fiber form etc. are mention | raise | lifted. In general, the water retention ratio tends to increase by using twisted fibrous materials, but if the value is within a predetermined range, the effect of the present invention can be obtained. In this invention, it is preferable to use long fibers (filaments), and particularly when using resin-made long fibers (resin filaments) obtained by molding using a resin composition containing a resin carrier described later as a material, Durability is high and preferable.

In the present invention, the resin filament contains the room temperature volatile pyrethroid insect repellent component. As a method for containing this room temperature volatile pyrethroid insect repellent component, the resin carrier described below is kneaded with this room temperature volatile pyrethroid insect repellent component to prepare a resin composition described later, and then molded to obtain a resin filament, First, a resin composition described later is molded to obtain a resin filament, and then the resin filament is twisted to form a mesh and impregnated with the room temperature volatile pyrethroid insect repellent component.

As a method for molding the resin composition described later, a resin filament is obtained by extrusion molding or injection molding of the resin composition described later, and then a mesh is formed, or the resin composition is directly formed by injection molding or the like. And a method of forming a mesh having

[Resin composition]
The resin composition is obtained by kneading a resin carrier with a fine powder carrier and another resin carrier as necessary. In addition, it is preferable on efficiency that this resin composition is once molded into pellets and then subjected to the above molding.

[Resin carrier]
The resin carrier is somewhat different depending on whether a room temperature volatile pyrethroid insect repellent component is kneaded or impregnated. That is, in the case of the former, it is not particularly limited as long as the insect repellent component mixed in the inside of the carrier can gradually bleed and volatilize on the surface. For example, a polyolefin such as a polyethylene resin or a polypropylene resin And resins formed by polymerizing monomers such as carboxylic acid esters. Here, the monomer such as carboxylic acid ester is effective for controlling volatilization of the insect repellent component from the surface of the resin carrier. For example, methyl acrylate, ethyl acrylate, methyl methacrylate, methacrylic acid Examples include ethyl and vinyl acetate.

In addition, since the blending ratio of these carboxylic acid ester monomers with respect to the polyolefin-based resin generally tends to slow the bleed speed of the insect repellent ingredient as the carboxylic acid ester monomer blending ratio increases, the insect repellent component to be used Depending on the type, content, purpose of use, etc., it may be appropriately adjusted in the range of 1 to 30% by mass relative to the polyolefin resin.

The resin carrier may be a polymer blend in which a polyolefin copolymer containing a large amount of a carboxylic acid ester monomer and a homopolymer of an olefin are mixed in an adjusted ratio. Furthermore, other polymer compounds such as a styrene-based thermoplastic elastomer can be contained as necessary.

In the present invention, an ethylene-vinyl acetate copolymer is preferable from the viewpoint of performance and usability, and the number ratio of ethylene units to vinyl acetate units in the copolymer is 90:10 to 70:30. preferable. This is because if the amount of vinyl acetate units is too small, the physical properties hardly change from those of polyethylene, and the bleed adjusting effect required in the present invention can hardly be expected. On the other hand, when there are too many vinyl acetate units, it becomes difficult to mold into resin pellets.

The melt mass flow rate (MFR) of the ethylene-vinyl acetate copolymer is preferably 5 g / 10 min or more and 50 g / 10 min or less. If the MFR is too small, the effect as a bleed adjusting agent cannot be expected, and if the MFR is too large, the influence on the physical properties of the resin pellets cannot be ignored.

On the other hand, in a chemical volatilizer of the type impregnated with a room temperature volatile pyrethroid insect repellent component, as a resin carrier, a resin non-adsorptive to an insect repellent component such as polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) is usually used. Generally used for the subject.
An insect repellent component is carried on the surface of a resin carrier comprising a flat or three-dimensional mesh and is used for volatilization. The resin such as polyolefin resin, styrene thermoplastic elastomer, or rayon described above is blended into such resin. The resin carrier can be modified to adjust the volatility of the insect repellent component.
Hereinafter, the chemical volatilization type of the type into which the room temperature volatile pyrethroid insect repellent component is kneaded will be described in detail.

[Fine powder carrier]
The fine powder carrier used in the present invention is a component that can be added to carry a room temperature volatile pyrethroid insect repellent component in a resin pellet. Examples thereof include microcrystalline silica called so-called white carbon, fine powdered silicic acid, diatomaceous earth, zeolites, viscous minerals, wood powder, and the like.

The size of the fine powder carrier is preferably a number average particle size of 1 μm or more and 30 μm or less, and more preferably 5 μm or more and 20 μm or less. When the number average particle diameter exceeds 30 μm, the surface area is insufficient even if the content is in the above-mentioned range, so that it is difficult to carry an insect repellent component as a carrier, and the resulting resin pellets are easily sticky. On the other hand, fine particles of less than 1 μm are not practical because they are difficult in practice and the physical properties greatly change.

The fine powder carrier containing microcrystalline silica such as white carbon does not react with the insect repellent component, and fine powder having a large surface area can be used. These fine powder carriers carry an insect repellent component to suppress stickiness, and as a result, the resin composition obtained by kneading together with the resin component is less sticky as a whole and can be suitably used as a master batch.

[Other resin carriers]
Furthermore, in order to adjust the weight and physical properties of the resin composition, other resin carriers may be kneaded in addition to the resin carrier such as the ethylene-vinyl acetate copolymer. As other resin carriers, a polyolefin resin or a styrene resin may be contained. Examples of the polyolefin resin include polyethylene (PE) and polypropylene (PP). Polyethylene is preferred because of its affinity with ethylene-vinyl acetate copolymer and ethylene-methyl methacrylate copolymer. In particular, low density polyethylene, specifically, branched low density polyethylene (LDPE) and chain low density polyethylene (LLDPE) are preferable.

[Combination ratio]
The compounding amount of the resin carrier is preferably 10% by mass or more, and more preferably 20% by mass or more with respect to the entire resin composition. If it is less than 10 mass%, the effect of suppressing excessive bleed will be insufficient. On the other hand, the upper limit is preferably 90% by mass or less, and more preferably 60% by mass or less. If the amount is too large, the resin composition pellets are used as a master batch, and the resin molded product obtained by kneading with the other resin carrier too suppresses bleeding and is the original purpose of the room temperature volatile pyrethroid. This is because the insect repellent effect due to the volatilization of the system insect repellent component may be excessively reduced. According to the present invention, bleed of the resin pellets obtained in an appropriate range can be achieved by kneading with 10% by mass or more and 90% by mass or less of ethylene-vinyl acetate copolymer and / or ethylene-methyl methacrylate copolymer. It becomes possible to adjust.

The content of the fine powder carrier is preferably 30% by mass or less, and more preferably 25% by mass or less, with respect to the entire resin composition. When it exceeds 30 mass%, it becomes difficult to maintain the shape as a pellet when the resin composition is pelletized due to the blending ratio with the resin carrier. Moreover, since it will also be contained in the molded article using the said resin composition, when too much, the possibility of affecting the physical property of a chemical volatilization body cannot be avoided.
Further, the lower limit value of the content of the fine powder carrier with respect to the entire resin composition is not particularly limited, but is set to 10% by mass or more in the case where it is necessary to suppress excessive bleeding. It is preferable to do this. If the amount is less than the lower limit, the suppressing effect may be insufficient.

[Production of resin composition and pellets]
The resin composition is obtained by heating the resin carrier and kneading the room temperature volatile pyrethroid insect repellent component and, if necessary, a fine powder carrier or other heated resin carrier. And a pellet can be obtained by pelletizing this and cooling.

The heating temperature depends on the type of resin used for the resin carrier and the type of resin used for other resin carriers, but is usually about 100 to 140 ° C. For example, an ethylene-vinyl acetate copolymer described later (manufactured by Tosoh Corporation: Ultrasen 710) has a melting point of 70 ° C. and can be sufficiently kneaded. If the heating temperature exceeds 140 ° C. and the heating temperature is too high, the room temperature volatile pyrethroid insect repellent component may be thermally decomposed or transpiration loss, which is not preferable.

Based on the above, as a typical composition of the resin composition, 10 mass% or more and 60 mass% or less of room temperature volatile pyrethroid insect repellent component, 30 mass% or less of fine powder carrier, 10 mass% or more and 60 mass% or less. Examples thereof include combinations containing the following resin carriers such as ethylene-vinyl acetate copolymer.

[Mixing time of other resin carriers]
By the way, as described above, the other resin carrier may be included in the production stage of the resin composition pellets, and the resin composition pellets are molded without the other resin carriers. Then, the drug volatilization body may be obtained by diluting the pellet with the other resin carrier, kneading and molding.

In this case, the dilution ratio is preferably 1.5 times or more and the upper limit is preferably about 5 times. If the ratio is less than 1.5 times, there is no merit in the process of dilution. On the other hand, if the ratio exceeds 5 times, the content of the insect repellent component is naturally reduced.

[Drug volatilizer]
The pellet made of the resin composition is molded into a chemical volatilization body. Further, as described above, when the other resin carrier is not contained in the insect repellent component-containing resin pellets, the insect repellent component-containing resin pellets are diluted with the other resin carriers, kneaded and molded. It is good also as a chemical volatilization body.

This chemical volatilization body is a structure having a shape that is preferably formed into a three-dimensional mesh by combining resin filaments. As this molding method, first, the pellets are molded by extrusion molding, injection molding or the like to obtain resin filaments, and then a mesh is formed, or the insect repellent component-containing resin pellets are directly or directly molded by injection molding or the like. And a method of forming a mesh by crossing the resin filaments.

Examples of the mesh structure include a planar net 1 as shown in FIG. 1 and a three-dimensional structure 2 as shown in FIGS. 2 (a) to 2 (c). In addition, as a shape of the chemical volatilization body which has the said mesh structure, it is not limited to these examples.

The planar net shown in FIG. 1 is obtained by intersecting the filaments in a lattice shape to form a planar lattice structure.

Also, the three-dimensional structure 2 shown in FIGS. 2 (a) to 2 (c) has a rectangular wave-like body 21 filament shown in FIG. It is intended to cross. Moreover, in the said three-dimensional structure 2, at least two top parts contained in one top part containing surface are reinforced with the reinforcing material 22 which consists of a linear rod-shaped body. The top portion-containing surface is a surface constituting the three-dimensional structure and a surface on which the top portion is disposed.

Such a three-dimensional structure 2 can increase the surface area of the filament existing in a certain volume as compared with the planar net 1. Furthermore, when the reinforcing material 22 is used, the surface area of the filament can be increased, and the strength of the three-dimensional structure can be improved.
In addition, a peripheral part is suitably determined by relationship with the intensity | strength of a solid structure, a shape, an external container, etc.

[Water retention ratio]
The water retention ratio of the structure, that is, the amount that the structure can retain water with respect to the weight of the structure (amount that the structure can retain water (parts by weight) / weight of the structure (parts by weight)) is 0. 005 or more is good and 0.01 or more is preferable. If it is smaller than 0.005, there may be a problem in manufacturing such as mesh molding. On the other hand, the upper limit of the water retention ratio is preferably 0.5, and preferably 0.4. When it is larger than 0.5, rainwater may remarkably suppress the volatilization of the room temperature volatile insect repellent component, resulting in a problem that the expected insect repellent effect cannot be obtained. The amount that the structure can hold water means the amount of water that physically adheres to the dents and gaps of the structure.

[Size of mesh]
The size of the mesh is the size of the mesh portion of the structure, that is, the mesh portion of the structure, and the surface area (one minimum mesh) formed by one mesh (minimum mesh) surrounded by the resin filaments ( area enclosed by the center line of the peripheral resin filaments) is, 10 mm ² or more is good, 20 mm ² or more. If it is narrower than 10 mm ^2, there is a high possibility that the attached water will block the mesh due to tension, and as a result of blocking the flow of air through the mesh, there may be a problem that volatilization of the insect repellent component is suppressed. The upper limit of the surface area, 200 mm ² selfishness, 150 mm ² is preferred. When the width is larger than 200 mm ² , the mesh strength is weak and easily deformed, which makes it difficult to handle and may cause a problem that the surface area of the structure containing the insect repellent component is insufficient.

[Flying insect pest repellent composition]
By the way, in addition to the room temperature volatile pyrethroid insect repellent component, in addition to the room temperature volatility pyrethroid insect repellent component, the chemical volatilization body of the present invention, in particular, for the purpose of imparting a fragrance and reinforcing the insect repellent effect at the initial stage of use. In addition, a flying insect repellent fragrance composition can be contained.

The above-mentioned flying pest repellent fragrance composition is a composition containing a flying pest repellent fragrance, and preferably a repellent effect sustained ingredient.

The flying pest repellent fragrance is one or more fragrance components selected from acetate ester compounds represented by the following general formula (I) and / or allyl ester compounds represented by the general formula (II): Examples thereof include a component containing (a) and one or more perfume components (b) selected from monoterpene alcohols or aromatic alcohols having 10 carbon atoms.
CH ₃ —COO—R ₁ (I)
(Wherein R ₁ represents an alcohol residue having 6 to 12 carbon atoms.)
R ₂ —CH ₂ —COO—CH ₂ —CH═CH ₂ (II)
(Wherein R ₂ represents an alkyl group having 4 to 7 carbon atoms, an alkoxy group, a cycloalkyl group, a cycloalkoxy group, or a phenoxy group.)

Specific examples of the acetate compound represented by the general formula (I) include p-tert-butylcyclohexyl acetate, o-tert-butylcyclohexyl acetate, p-tert-pentylcyclohexyl acetate, tricyclodecenyl acetate, Benzyl acetate, phenylethyl acetate, styryl acetate, anisyl acetate, cinnamyl acetate, terpinyl acetate, dihydroterpinyl acetate, linalyl acetate, ethyl linalyl acetate, citronellyl acetate, geranyl acetate, neryl acetate, bornyl acetate And isobornyl acetate.

Specific examples of the allyl ester compound represented by the general formula (II) include allyl hexanoate, allyl heptanoate, allyl octanoate, allyl isobutyloxy acetate, allyl n-amyloxy acetate, allyl cyclohexyl acetate. And allyl cyclohexyl propionate, allyl cyclohexyl oxyacetate, allyl phenoxy acetate and the like.

Further, specific examples of the component (b) include terpineol, geraniol, dihydromyrcenol, borneol, menthol, citronellol, nerol, linalool, ethyl linalool, thymol, eugenol, and p-menthane-3,8-diol. can give.

The blending ratio of (a) to (b) is preferably 0.1 to 1.0 times. Within this range, a high repellent effect against flying insects was confirmed.

As the flying insect repellent fragrance, other fragrance ingredients such as monoterpene hydrocarbons such as limonene, monoterpene ketones such as menthone, carvone, pregon, camphor, damascon, citral, citronellal, neral, perilla Monoterpene-based aldehydes such as aldehydes, ester compounds such as cinnamyl formate and geranyl formate, phenylethyl alcohol, diphenyl oxide, indole aroma, or various essential oils containing the perfume ingredients such as jasmine oil, neroli oil, Peppermint oil, bergamot oil, orange oil, geranium oil, petitgren oil, lemon oil, citronella oil, lemongrass oil, cinnamon oil, eucalyptus oil, lemon eucalyptus oil, thyme oil and the like may be added as appropriate.

As the repellent effect sustained component, it is preferable to use one or more of glycol and / or glycol ether having a vapor pressure at 20 ° C. of 0.2 to 20 Pa. Conventionally, glycols and / or glycol ethers are listed as solvents in the same manner as ethanol, isopropanol, kerosene and the like, and no effect on flying pests is mentioned. Alternatively, glycol ether not only as a solvent, but also has a long-lasting effect on flying insect pest repellents, and if an aromatic flying insect repellent is used, the initial fragrance can be sustained. This is what we have learned.

Specific representative examples of the repellent effect sustained component (including vapor pressure at 20 ° C.) include propylene glycol (10.7 Pa), dipropylene glycol (1.3 Pa), tripropylene glycol (0.67 Pa), diethylene glycol ( 3 Pa), triethylene glycol (1 Pa), 1,3-butylene glycol, hexylene glycol (6.7 Pa), benzyl glycol (2.7 Pa), diethylene glycol monobutyl ether (3 Pa), dipropylene glycol monobutyl ether, and tripropylene Examples thereof include glycol monomethyl ether, and dipropylene glycol is particularly preferable. *

The blending ratio of the repellent effect sustaining component to the flying insect repellent is preferably 0.2 to 10 times. In this range, it was confirmed that the repellent effect could be sufficiently maintained against the flying insect repellent.

By the way, when blending the flying insect repellent composition, the blending ratio of the composition to the room temperature volatile pyrethroid insect repellent component is suitably about 0.2 to 2 times. If the amount of the fragrance composition is small, the purpose of imparting the fragrance cannot be achieved. On the other hand, if the amount is too large, the fragrance is too strong or the volatilization of the insect repellent component may be affected.

In the case of using the flying insect repellent fragrance composition, when preparing the insect repellent component-containing resin pellet, the flying insect repellent fragrance composition may be contained, but the insect repellent component-containing resin pellet and the flying insect repellent fragrance It is preferable to knead both pellets after preparing each component-containing pellet. This is because the heating temperature at the time of manufacture of the flying insect pest repellent component-containing pellets is 90 to 130 ° C., which is lower than 110 to 140 ° C. in the case of the insect repellent component-containing resin pellets. This is because it is advantageous for reducing the loss for a high fragrance composition.

[Content of room temperature volatile pyrethroid insect repellent]
The content of the room temperature volatile pyrethroid insect repellent component carried on the resin carrier of the drug volatilization body is not particularly limited because it varies depending on the type of insect repellent component used, the use environment, the use conditions, and the like. . However, in order to secure the amount of the insect repellent component necessary for the insect repellent effect and to facilitate molding after kneading the insect repellent component, it further prevents the insect repellent component from excessively bleeding on the surface of the resin carrier and causing stickiness. Therefore, the content is preferably in the range of 0.5 to 20% by mass.

When the content of the insect repellent component is less than 0.5% by mass, it becomes difficult to secure the amount of the insect repellent component necessary for exhibiting the insect repellent effect, while when the content of the insect repellent component exceeds 20% by mass. Is difficult to mold after kneading the insect repellent component, and moreover, the insect repellent component is excessively bleed on the surface of the resin carrier and is likely to cause stickiness.

Here, if the content of the room temperature volatile pyrethroid insect repellent component is exemplified, an amount of about 30 to 2000 mg can be raised corresponding to a use period of about 30 to 365 days.

That is, in setting the content, although it varies depending on the type of insect repellent component used, for example, when using metfurthrin alone, the minimum volatilization amount necessary for manifesting the insect repellent effect is 0.03 mg / hr or more Since profluthrin alone is 0.03 mg / hr or more and transfluthrin alone is 0.06 mg / hr or more, the content in the 30th to 365th days is 30 to 1000 mg for metofluthrin and 30 for proflothrin. It can be set in the range of ~ 1000 mg and in the case of transfluthrin in the range of 60 to 2000 mg.

[Other additives]
As described above, the chemical volatilization body of the present invention can contain the above-mentioned flying insect repellent composition for the purpose of imparting a scent and reinforcing the insect-repellent effect particularly in the initial stage of use. A long-lasting fragrance component that is in the range of 250 to 400 ° C. and can maintain the fragrance for a longer period of time may be blended.
In this case, the period when the insecticidal effect is obtained by the room temperature volatile pyrethroid insect repellent and the period when the aroma effect is obtained by the persistent perfume ingredient can be linked, and the display function of the insect repellent effect can be realized by sensing the aroma. It is. Examples of such persistent perfume ingredients include galaxolide, musk ketone, hexyl cinnamic aldehyde, ethylene brushate, methyl atrate, hexyl salicylate, tricyclodecenyl acetate, orange crystal, ambroxan, cachemelan, caron, helio Tropine, indole aroma, indole, methyl cedryl ketone, methyl β-naphthyl ketone, methyl dihydrojasmonate, rosephenone, and 7-acetyl-1,2,3,4,5,6,7,8-octahydro- 1,1,6,7-tetramethylnaphthalene and the like.

Furthermore, synergists, repellents, antibacterial agents, antifungal agents, and other functional components can be used at the same time. For example, as the synergist, isobornyl thiocyanoacetate (trade name: IBTA) N-octylbicycloheptenecarboximide (trade name: sinepiline 222), N- (2-ethylhexyl) -1-isopropyl-4-methylbicyclo [2,2,2] oct-5-ene-2,3- And dicarboximide (trade name: Sinepirine 500).

Examples of the repellent include N, N-diethyl-m-toluamide (trade name: Diet), dimethyl phthalate, dibutyl phthalate, 2-ethyl-1,3-hexanediol, 1,4,4a, 5a, 6, 9,9a, 9b-octahydrodibenzofuran-4a-carbaldehyde and the like.

Examples of the antibacterial agent include hinokitiol, tetrahydrolinalool, eugenol, citronellal, allyl isothiocyanate and the like.

Examples of the antifungal agent include isopropylmethylphenol and orthophenylphenol.

Examples of the other functional components include stress-reducing components containing green leaf alcohol and green leaf aldehyde called “green fragrance”.

In addition, colorants (color pigments), antistatic agents, etc. may be added as appropriate. Adding color or attaching a time indicator to make the end of use more visible increases the commercial value. Can do.

The room temperature volatile pyrethroid insect repellent component used in the present invention has sufficient stability, but in order to further improve the stability, it is also possible to add a stabilizer such as an antioxidant, for example, 2,2'-methylenebis (4-ethyl-6-t-butylphenol), 4,4'-methylenebis (2-methyl-6-t-butylphenol), BHT, BHA, 3,5-di-t-butyl- 4-hydroxyanisole, mercaptobenzimidazole, etc. can be used.

In addition, by using ultraviolet absorbers such as paraaminobenzoic acids, cinnamic acids, salicylic acids, benzophenones and benzotriazoles as ultraviolet absorption inhibitors, the light resistance during storage and use can be further improved.

[Storage container]
In this invention, a chemical volatilization body is accommodated and used for a storage container. The plastic container for storing the chemical volatilization body is not particularly limited in shape and size as long as it can stably volatilize the room temperature volatile pyrethroid insect repellent component, but from the point of volatilization efficiency, The ratio (opening ratio) in the container is preferably in the range of 10 to 50% with respect to the total surface area of the container.

In addition, as long as the area of an opening part is the said range, an opening part may open to a side surface, an upper surface, and a lower surface as well as a thing in the front and back surface of a container. In particular, it is preferable to provide an opening on the side surface because the air flow in the storage container is efficient. Further, the shape of the opening is not particularly limited.

The shape of the plastic container is not particularly limited, and if the resin carrier is cylindrical, the container may be cylindrical corresponding to this, for example, when applied to an air purifier mounting. Can be used by simply simplifying the container and holding the resin carrier.

Examples of the structure of the plastic container include a bent plastic member in the form of a flat sheet and an integrally molded product of plastic.

When the flat sheet-shaped plastic member is folded, the container is assembled so that the folded surfaces of the respective members overlap with each other using the two folded members as a set.

Furthermore, a tongue portion with a notch can be provided at the end of the bent surface of the bent member, and the hook portion can be extended so that it can be folded up. In this case, a storage window for folding the hook portion may be provided above the back surface. Thereby, the usage according to various usage methods is attained.

That is, when the tip portion of the hook portion shown here is locked to, for example, the upper surface portion of the container, when the container is used outdoors, the container is blown away by wind or when the container is suspended indoors. There is no problem of accidental dropping, and you can expect a certain effect at the place you want to use.

Next, the plastic integrally molded product may be any molding method as long as it is molded by normal injection molding or vacuum molding, but the upper surface and the lower surface, the front surface and the rear surface may be integrated using a hinge. If integrated by fitting, the manufacturing process can be further simplified. Further, in this case, if the hook portion is provided on the upper surface portion of the container so that it can be raised, it can be used more effectively.

That is, in the same manner as described above, when the tip portion of the hook portion shown here is configured to be able to be locked to a part of the container, for example, an opening or a recess provided on the upper surface, when used outdoors, When the container is blown away by wind or hung indoors, there is no problem of accidental dropping during use, and a certain effect can be expected in a place where it is desired to use.

In addition, which part of the container is to be locked is a matter to be appropriately selected during manufacturing, but if the container is locked on the same surface as the surface on which the hook portion is provided, the container can be removed from the installation position during use. Since it can prevent moving, it is preferable.

Various plastic materials such as polyethylene terephthalate, polyethylene, polypropylene, polybutylene terephthalate, nylon, polyamide, etc. can be used as the plastic material used for these flat sheet-shaped plastic members and plastic integrally molded products. In view of the properties, it is preferable to use polyethylene terephthalate (PET) or polybutylene terephthalate (PBT).

Various thicknesses of these plastics can be used, but those having a thickness of 0.05 to 2 mm may be used from the viewpoint of the shape of the resin carrier, its volatilization performance, economy, etc. preferable.

[Storage bag]
The chemical volatilization body of the present invention is generally marketed after being stored in a storage container and then stored in a drug-impermeable film bag, and used when opened. Of course, only the drug volatilizer may be stored in a drug-impermeable film bag and marketed, and the drug volatilizer removed from the bag during use may be loaded into the storage container. Here, examples of the material of the drug-impermeable film bag include polyester (PET, PBT, etc.), polyamide, polyacetal, polyacrylonitrile, and the like, and the thickness thereof is determined within a range that does not impair flexibility. In order to impart heat sealability, the inner surface of these drug-impermeable films can be laminated with polyethylene, polypropylene film or the like.

[Usage]
The chemical volatilized body prepared by the present invention has a living room, a Japanese-style room, a room such as an entrance, a warehouse, a restaurant, a factory, a work shop, and its doorway for a predetermined period according to its design specifications from just after use to about 365 days. , Livestock houses such as poultry houses and pig houses, pet sheds such as kennels and rabbit huts and their surroundings, inside septic tanks and manholes, inside tents and entrances of camping, barbecue, fishing, gardening and other outdoor activities Thus, it exhibits an excellent insecticidal effect against mosquitoes such as mosquitoes, chikaeka, and mosquitoes, flyfish, chironomids, flies, butterflies, moths and the like. In addition, it is possible to effectively prevent the entry of these pests from the outside to the inside if the hook part is hooked on a curtain rail or the like, or is hung on a clothes rack in a place such as a window or a veranda that separates the room from the outside. Can also be very practical.

Furthermore, the chemical volatilization body can be formed in a cylindrical shape for attaching a lead for a pet dog, or the container can be appropriately simplified and used for attaching an air purifier or the like.

[Characteristics of chemical volatilizer]
The chemical volatilization body of this invention can be stably manufactured on quality by having the said structure.

Next, the chemical volatilization body of this invention is demonstrated using an Example. In addition, the Example described below is only an example which actualized this invention, and does not limit the technical scope of this invention.
First, the used medicine and the performance evaluation method will be described.

<Drugs used>
・ Metfurthrin (Sumitomo Chemical Co., Ltd .: Eminence)
・ Transfluthrin (Sumitomo Chemical Co., Ltd .: Biothrin)
・ Profluthrin (manufactured by Sumitomo Chemical Co., Ltd .: Fair Retail)
Microcrystalline silica (EVONIK: Carplex # 80, white carbon, average particle size: 15 μm, hereinafter referred to as “silica”)
Ethylene-vinyl acetate copolymer (manufactured by Tosoh Corporation: Ultrasen 710, ethylene: vinyl acetate unit ratio = 72: 28, hereinafter referred to as “EVA”)
Low-density polyethylene (manufactured by Asahi Kasei Corporation: Suntech LDM6520, hereinafter referred to as “LDPE-A”)
Low density polyethylene (Nippon Polyethylene Co., Ltd .: Novatec LDLJ802, hereinafter referred to as “LDPE-B”)
Polyethylene terephthalate (manufactured by Bell Polyester Products: Bellpet IP121B, hereinafter referred to as “PET”)

<Measurement of water retention ratio>
The obtained chemical volatilization body was immersed in water for 3 minutes, then slowly pulled up, and the water retention ratio was calculated by the following formula.
Water retention ratio = (weight of water attached to the chemical volatilization body) / (weight of chemical volatilization body)

<Measurement of volatilization before and after water retention ratio test>
The obtained chemical volatilization body was volatilized for 1 day in a room at 25 ° C. under a wind speed of 1 m / sec. The amount of the active ingredient contained in the chemical volatilization body was measured by gas chromatography, and the volatilization amount was calculated. Further, immediately after the above water retention ratio measurement test, it was volatilized for 2 days under the same conditions, and the chemical volatilization amount for 2 days was calculated and converted per day. The relationship with the water retention ratio was investigated by comparing the chemical volatilization amount before and after the water retention ratio test.

(Examples 1 to 5, 7 to 9, Comparative Example 1)
<Production method of resin pellet>
10 parts by weight of a room temperature volatile pyrethroid insect repellent component shown in Table 1 was heated to 50 ° C. and supported on 6 parts by weight of silica, and then 40 parts by weight of EVA and 44 parts by weight of LDPE-A were Made by Technobel: Kneaded and extruded at 120 to 140 ° C. using a twin screw extruder to produce a resin pellet containing a room temperature volatile pyrethroid insect repellent component having a diameter of 3 mm and a length of 5 mm.

<Manufacture of molded body>
100 parts by weight of the above-mentioned room temperature volatile pyrethroid insecticide-containing resin pellets and 300 parts by weight of LDPE-B (including 10 parts by weight of colorant pellets) are kneaded at 120 to 140 ° C. and then charged into an injection or extrusion molding machine. A chemical volatilization body consisting of the planar net shown in Examples 7 to 9 and the three-dimensional structure shown in FIG. 2 (Examples 1 to 5 and Comparative Example 1) was obtained.
The weight, size, and minimum mesh area of the chemical volatilizer are as shown in Table 1.
Based on said method, the volatilization amount before and behind the water retention ratio test was measured using the obtained chemical volatilization body. The results are shown in Table 1.

(Example 6, Comparative Examples 2 and 3)
A plain structure was knitted on both sides using a PET processed yarn as a drug-impregnated body, and the both sides were joined by a twisted filament to produce a three-dimensional structure (knitted fabric) having the size shown in Table 1.
The weight, size, and minimum mesh area of the three-dimensional structure are as shown in Table 1.
A chemical solution obtained by dissolving the volatile pyrethroid insect repellent components in the amount shown in Table 1 in 0.25 g of acetone was held in the three-dimensional structure. Based on said method, the volatilization amount before and behind the water retention ratio test was measured using the obtained chemical volatilization body. The results are shown in Table 1.

As a result of the test, the examples of the present invention in which the water retention ratio is in the range of 0.005 or more and 0.5 or less show a small reduction in the amount of insecticidal component volatilization immediately after the water retention ratio test, and to the insecticidal component volatility due to the attachment of rainwater The effect of was slight. As can be seen from the results of Example 4 and Example 6, the water retention ratio tended to be high in the case of a three-dimensional structure having a small mesh area or a twisted filament.
On the other hand, in Comparative Example 1 to Comparative Example 3 in which the water retention ratio exceeded 0.5, the volatilization amount immediately after the water retention ratio test was remarkably suppressed, and there was a concern about a decrease in the insect repellent effect.

The present invention can be used in the field of pest control using a chemical volatilizer.

DESCRIPTION OF SYMBOLS 1 Planar net 2 Three-dimensional structure 21 Rectangular wave body 21a 1st top part 21b 2nd top part 22 Reinforcement material

Claims

In the drug volatilization body consisting of a structure having a mesh composed of a fibrous material containing a room temperature volatile pyrethroid insect repellent component,
The fibrous material is made of a resin filament,
The chemical volatilization body, wherein a water retention ratio, which is an amount that the structure can retain water with respect to a weight of the structure, is 0.005 or more and 0.5 or less.
The drug volatilization body according to claim 1, wherein the mesh size of the mesh portion of the structure is 10 mm 2 or more and 200 mm 2 or less.
3. The drug volatilizer according to claim 1 or 2, wherein the resin filament is formed by kneading the room temperature volatile pyrethroid insect repellent component into a resin carrier and then molding the resin filament.