TWI555470B - Volatile chemical carrier - Google Patents

Description

Drug volatiles

The present invention relates to a medicament volatile body for repelling and repelling flying insects such as mosquitoes, blackfly, etc. More specifically, the present invention relates to a composition comprising a fibrous substance and containing a normal temperature volatile pyrethroid. (pyrethroid) is a volatile agent for the screen of the insect-repellent component.

Insecticides which are repelled or repelled by pests by volatilizing a normal temperature volatile insect repellent into the air have been known.

For example, Patent Document 1 listed below discloses a drug volatile material obtained by impregnating a mesh made of silk with an insect repellent component using a plurality of tablets.

Further, Patent Document 2 listed below discloses a molded article for pest control which forms a plurality of grooves on the surface of the resin molded body at intervals of 300 μm or less to prevent the pest controlling the active ingredient from becoming sticky.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-200239

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2009-19015

Moreover, most of these insect-proof tools are used by hanging on a window or a porch. In this case, there is a case where the insect-proof tool is inconvenienced or feels uncomfortable. In response to this situation, the industry is considering a method of reducing the presence of the insect repellent tool by making the overall size of the insect repellent tool small or thinning the thickness.

However, the drug volatiles described in Patent Document 1 basically constitute a flat-shaped screen comprising a resin which is non-adsorptive to insect-repellent components such as polyethylene terephthalate (PET), although The insect repellent component is impregnated into the silk, but only in a state of being attached or impregnated near the surface of the filament. Therefore, when the filature is cut in a cross section, depending on the shape of the cross section, although the insect repellent component is located at the center of the cross section and at a distance from the outer peripheral portion, the insecticide component volatilizes extremely rapidly. . Therefore, even if it can exert a relatively high insect repellent effect at the initial stage of use, it cannot cope with long-term use that is more than 100 days. Further, since the insect repellent component is located near the surface of the silk, it is also susceptible to rain when it is used outdoors, and the problem of the outflow loss of the insecticide component cannot be avoided.

On the other hand, the molded article for pest control described in Patent Document 2 is characterized in that the pest control active ingredient is supported in a state of being kneaded to a resin carrier, and thus the drug volatile body described in Patent Document 1 is used. In comparison, the pest can be inhibited from controlling the volatilization rate of the active ingredient to stabilize it. However, when the volatilization rate is in the case of rain, there is a case where the insects are prevented from volatilizing by the water, and the control effect is lowered.

In view of the above-mentioned problems, the inventors of the present invention conducted intensive studies on the case where the volatile matter of the following agent was subjected to rain, and the above-mentioned chemical volatilization system mixed the normal temperature volatile pyrethroid insect-repellent component into the resin carrier. The resin filament obtained by the molding is formed into a wire mesh, or the three-dimensional structure obtained by preliminarily combining the resin filaments to form a wire mesh is impregnated with a normal temperature volatile pyrethroid insect-repellent component. By. That is, an object of the present invention is to provide a drug volatile body which retains volatile energy even when the drug volatiles are exposed to rain.

The inventors of the present invention have found that the following constitution of the present invention achieves the above object, and therefore exhibits an excellent effect.

(1) A drug volatile body comprising a structure having a mesh, the mesh comprising a fibrous substance containing a room temperature volatile pyrethroid insect-repellent component, and the drug volatile body is characterized by: The fibrous material includes a resin filament, and the water retaining ratio of the structure which is water-retaining with respect to the weight of the structure is 0.005 or more and 0.5 or less.

(2) The volatile matter of the above (1), wherein the mesh portion of the structure has a mesh size of 10 mm ² or more and 200 mm ² or less.

(3) The volatile matter of the above-mentioned (1) or (2), wherein the resin filament is obtained by kneading the above-mentioned room temperature volatile pyrethroid insect-repellent component into a resin carrier.

In the drug volatile material of the present invention, the water retaining ratio of the structure with respect to the weight of the structure, that is, the water retention ratio is set within a specific range, so that the adhesion of the rain can be improved when it is installed outdoors. Inhibition of volatilization of pyrethroid-based insect-repellent components.

1‧‧‧ planar network

2‧‧‧Three-dimensional structure

21‧‧‧Rectangular wavy body

21a‧‧‧1st top

21b‧‧‧2nd top

22‧‧‧ reinforcing materials

Fig. 1 is a perspective view showing an example of a planar net.

Fig. 2(a) is a perspective view showing an example of a three-dimensional structure, Fig. 2(b) is a front view of Fig. 2(a), and Fig. 2(c) is a cross-sectional view taken along line c-c of Fig. 2(b).

The agent volatilization system of the present invention comprises a structure having a planar or three-dimensional mesh, and the structure of the planar or three-dimensional mesh comprises a fibrous material containing a room temperature volatile pyrethroid insect-repellent component.

[Normal temperature volatile pyrethroid insect-resistant ingredients]

The room temperature volatile pyrethroid insect-repellent component preferably has a property of volatilizing into air at a normal temperature, and the vapor pressure at 25 ° C is about 0.001 Pa or more and 0.1 Pa or less. Specifically, in terms of volatility and safety, metofluthrin, profluthrin, transfluthrin, and dextromethrin (empenthrin) may be mentioned. At least one of them. Further, regarding the insect-repellent components, various optical isomers or geometric isomers may be present, and any of the isomers may be used singly or in combination.

[fibrous]

The fibrous material is a fiber-like one, and examples thereof include a long fiber (filament) itself, or a long fiber or a short fiber, and are made into a fiber. In general, there is a tendency that the water retention ratio is increased by using a twisted fibrous material, but the effect of the present invention can be exerted as long as the value is within a specific range. In the present invention, it is preferred to use a long fiber (filament), and in particular, a resin-made long fiber (resin filament) obtained by molding a resin composition containing a resin carrier described later as a material, the durability is improved, and it is preferable. .

In the present invention, the above-mentioned resin filaments contain the above-mentioned room temperature volatile pyrethroid insect-repellent component. As a method of containing the room temperature volatile pyrethroid insect-repellent component, the room temperature volatile pyrethroid insect-repellent component is kneaded in a resin carrier described below, and the following resin composition is prepared, and then a method of forming a resin filament by molding; or first forming a resin filament to obtain a resin filament, and then kneading the resin filament to form a screen, and then impregnating the above-mentioned room temperature volatile pyrethroid Methods of insect components, etc.

The method of forming the resin composition described below may be a method in which a resin composition is subjected to extrusion molding or injection molding to obtain a resin filament, and then a screen is formed; or the following resin is formed by injection molding or the like. A method in which a composition directly forms a screen having a resin filament, and the like.

[Resin composition]

The resin composition is obtained by mixing a fine powder carrier and other resin carriers as needed in a resin carrier. Further, in terms of efficiency, the resin composition is preferably formed into a pellet after being temporarily formed into pellets.

[Resin carrier]

The resin carrier is classified into different types according to whether the room temperature volatile pyrethroid insect-repellent component is kneaded or impregnated. In other words, in the case of the former, the insect-repellent component which is incorporated into the carrier can be slowly exuded to the surface and volatilized, and is not particularly limited. For example, a polyolefin resin such as a polyethylene resin or a polypropylene resin may be mentioned. Or a monomer such as a carboxylic acid ester is polymerized and formed. Here, the monomer such as a carboxylate is effective in controlling the volatilization of the above-mentioned insect-repellent component from the surface of the resin carrier, and examples thereof include methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, and acetic acid. Vinyl ester and the like.

In addition, as for the blending ratio of the carboxylate monomers to the polyolefin resin, the higher the blending ratio of the carboxylate monomer, the lower the bleeding rate of the insecticidal component is. The type, content, or purpose of use of the insect-repellent component may be appropriately adjusted within a range of from 1 to 30% by mass based on the polyolefin resin.

In addition, the resin carrier may be a polymer blend obtained by mixing a polyolefin-based copolymer containing a large amount of a carboxylate monomer and a homopolymer of an olefin in a predetermined ratio, and may further contain a polymer blend. Other polymer compounds such as styrene-based thermoplastic elastomers.

In the present invention, in terms of performance or usability, etc., an ethylene-vinyl acetate copolymer is preferred, and the amount of the ethylene unit and the vinyl acetate unit is preferably from 90:10 to 70:30. The reason for this is that if the vinyl acetate unit is too small, the physical properties are hardly changed as compared with the polyethylene, and the bleeding adjustment effect necessary in the present invention can hardly be expected. On the other hand, if the vinyl acetate unit is too large, it is difficult to form into a resin pellet.

Further, the melt flow rate (MFR, Melt Flow Rate) 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, it cannot When the MFR is too large, the effect on the physical properties of the resin particles cannot be ignored.

On the other hand, in a volatile agent of a type impregnated with a pyromorphic insect-repellent component at room temperature, as a resin carrier, polyethylene terephthalate (PET) or poly-p-phenylene is generally used. A resin which is non-adsorptive to the insect-repellent component, such as PBT (Polybutylece Terephthalate), is used as a main component.

The surface of the resin carrier constituting the planar or three-dimensional mesh is loaded with an insect-repellent component for volatilization, and the polyolefin-based resin, the styrene-based thermoplastic elastomer, or a resin such as ruthenium may be blended in the resin. The resin carrier is modified to adjust the volatility of the insect-repellent component.

Hereinafter, the drug volatiles of the type mixed with the room temperature volatile pyrethroid insect-repellent component will be described in detail.

[micro powder carrier]

The fine powder carrier used in the present invention is a component which can be added to the resin particles in order to carry a normal temperature volatile pyrethroid insect-repellent component. For example, microcrystalline cerium oxide or micro powder ceric acid, diatomaceous earth, zeolite, viscous mineral, wood powder, etc., which are called so-called white carbon, are mentioned.

The size of the fine powder carrier is preferably a number average particle diameter of 1 μm or more and 30 μm or less, more preferably 5 μm or more and 20 μm or less. When the number average particle diameter exceeds 30 μm, even if the content is in the above range, the surface area is insufficient. Therefore, it is difficult to carry the insect-repellent component as a carrier, and the obtained resin particles are likely to be sticky. On the other hand, in reality, it is difficult to obtain fine particles of less than 1 μm, and the physical properties are largely changed, which is not preferable.

As the fine powder carrier containing white carbon-like microcrystalline cerium oxide or the like, a fine powder which does not react with the insect-repellent component and has a large surface area can be used. These fine powder carriers carry the insect-repellent component and suppress the stickiness. As a result, the resin composition obtained by kneading together with the resin component is generally less likely to be sticky, and can be preferably used as a master batch.

[Other resin carriers]

Further, in order to adjust the weight of the resin composition or to adjust the physical properties, other resin carriers may be kneaded in addition to the resin carrier such as the ethylene-vinyl acetate copolymer. As another resin carrier, a polyolefin resin or a styrene resin may be contained. Examples of the polyolefin-based resin include polyethylene (PE, Polyethylene), polypropylene (PP, Poly Propylene), and the like, and affinity with an ethylene-vinyl acetate copolymer or an ethylene-methyl methacrylate copolymer. In particular, it is preferably polyethylene, and in terms of formability, it is particularly preferably low-density polyethylene. Specifically, it is preferably low density polyethylene (LDPE, low density polyethylene) and chain low density polyethylene. (LLDPE, Linear Low Density Polyethylene).

[mixing ratio]

The amount of the resin carrier to be added is preferably 10% by mass or more, and more preferably 20% by mass or more based on the total amount of the resin composition. If it is less than 10% by mass, the effect of suppressing excessive bleeding is insufficient. On the other hand, the upper limit is preferably 90% by mass or less, and more preferably 60% by mass or less. The reason for this is that if the particles of the resin composition are used as a masterbatch and the resin molded article obtained by kneading with the other resin carrier is excessively inhibited, excessive bleeding is suppressed, and the original purpose is excessively lowered to volatilize at normal temperature. The insecticidal effect obtained by volatilization of the pyrethroid-based insect-repellent component. According to the present invention, the obtained resin particles can be adjusted within a moderate range by kneading with 10% by mass or more and 90% by mass or less of the ethylene-vinyl acetate copolymer and/or the ethylene-methyl methacrylate copolymer. Exudation.

The content of the fine powder carrier is preferably 30% by mass or less, and more preferably 25% by mass or less based on the total of the resin composition. When the content is more than 30% by mass, it is difficult to maintain the shape of the particles when the resin composition is granulated in terms of the ratio of the resin composition to the resin carrier. Moreover, since the fine powder carrier is also contained in the molded article using the resin composition, if it is too large, the influence on the physical properties of the drug volatile body cannot be avoided.

In addition, the lower limit of the content of the fine powder carrier relative to the total amount of the resin composition is not particularly limited, and when it is necessary to suppress excessive bleeding, it is preferably set to 10% by mass or more. If it is less than the lower limit, the suppression effect may be insufficient.

[Manufacture of Resin Composition and Particles]

The above resin composition can be obtained by heating the above resin carrier, and kneading the above-mentioned room temperature volatile pyrethroid insect-repellent component, optionally a fine powder carrier or a heated other resin carrier. Then, the particles can be obtained by granulating and cooling.

The heating temperature depends on the type of the resin of the resin carrier to be used or the type of the resin of the other resin carrier, and is usually suitably about 100 to 140 °C. For example, the following ethylene-vinyl acetate copolymer (manufactured by Tosoh Co., Ltd., Ultrasne 710) has a melting point of 70 ° C and can be sufficiently kneaded. If the heating temperature is excessively increased to more than 140 ° C, there is a problem that the pyrolysis or evaporation loss of the above-mentioned room temperature volatile pyrethroid insect-repellent component is unsatisfactory.

In the above-mentioned case, a typical composition of the resin composition is 10% by mass or more and 60% by mass or less of the normal temperature volatile pyrethroid insect-repellent component and 30% by mass or less of the fine powder carrier. And a combination of a resin carrier such as an ethylene-vinyl acetate copolymer of 10% by mass or more and 60% by mass or less.

[mixing period of other resin carriers]

Further, as described above, the other resin carrier may be contained in the production stage of the pellet of the resin composition, or the pellet of the resin composition may be formed without other resin carrier, and then the other The resin carrier is diluted with the particles, kneaded and molded, whereby the above-mentioned drug volatiles are obtained.

The dilution ratio at this time is preferably 1.5 times or more and the upper limit is about 5 times. If it is less than 1.5 times, the advantages in the dilution step are lost. On the other hand, if it exceeds 5 times, it will of course There is a problem that the content of the insect-repellent component has to be lowered.

[agent volatiles]

The particles containing the above resin composition are shaped to form a drug volatile body. Further, as described above, when the resin-containing component-containing resin particles do not contain the other resin carrier, the resin-containing resin particles may be diluted with the other resin carrier, and kneaded and molded. Form the drug volatiles.

The drug volatile material is a structure having a shape in which a resin filament is combined and is preferably configured as a three-dimensional mesh. The molding method may be a method in which the pellets are first formed by extrusion molding or injection molding to obtain a resin filament, and then a screen is formed; or the resin particles containing the insect-repellent component are formed by injection molding or the like. A method of directly forming a plurality of resin filaments to form a screen.

As an example of the above-mentioned screen structure, a planar net 1 as shown in Fig. 1 or a three-dimensional structure 2 as shown in Figs. 2(a) to 2(c) can be cited. Further, the shape of the drug volatile body having the above-described mesh structure is not limited to these examples.

The planar mesh shown in Fig. 1 is such that the filaments are formed in a lattice shape to form a planar lattice structure.

Further, the three-dimensional structure 2 shown in Figs. 2(a) to (c) is a pair of filaments of a rectangular corrugated body 21 shown in Fig. 2(c), and two corrugated bodies 21 are formed at the top. Basically a right angle cross. Further, in the above-described three-dimensional structure 2, at least two top portions included in the top surface are reinforced by a reinforcing material 22 including a linear rod-shaped body. The top surface includes the surface on which the three-dimensional structure is formed, and the surface on which the top portion is disposed.

Such a three-dimensional structure 2 can increase the surface area of the filaments present in a certain volume as compared with the planar web 1. Further, when the reinforcing material 22 is used, the surface area of the filament can be further increased, and the strength of the three-dimensional structure can be improved.

Further, the peripheral portion is appropriately determined depending on the relationship between the strength and shape of the three-dimensional structure and the external container.

[water retention ratio]

The water retention ratio of the structure, that is, the amount of water retained by the structure relative to the weight of the structure (the amount of water retained by the structure (parts by weight) / the weight of the structure (parts by weight) is preferably 0.005 or more. Good is 0.01 or more. If it is less than 0.005, there is a case where inconvenience in manufacturing such as wire mesh molding occurs. On the other hand, the upper limit of the water retention ratio is preferably 0.5, preferably 0.4. When it is more than 0.5, there is a problem that rainwater is significantly suppressed from volatilization of the normal temperature volatile insect repellent component, and the desired insect repellent effect cannot be obtained. Furthermore, the amount by which the structure can retain water refers to the amount of water physically attached to the depression or gap of the structure.

[The size of the screen]

The size of the screen is the size of the mesh of the screen portion of the structure, that is, the screen portion of the structure, and the surface area of a mesh (minimum mesh) surrounded by the resin filaments (by the surrounding The area surrounded by the center line of the resin filaments is preferably 10 mm ² or more, preferably 20 mm ² or more. If it is less than 10 mm ² , there is a case where the adhered water is likely to block the mesh due to the tension, and the flow of the air passing through the mesh is blocked, and as a result, the volatilization of the insect-repellent component is suppressed. On the other hand, the upper limit of the surface area is preferably 200 mm ² , preferably 150 mm ² . If it is more than 200 mm ² , there is a case where the screen is weak and easily deformed, so that it is difficult to handle, and the surface area of the structure containing the insect-repellent component is insufficient.

[flying pest repellent spice composition]

Further, in the volatile matter of the present invention, in addition to the above-mentioned normal temperature volatile pyrethroid insect-repellent component, in particular, in order to impart aroma and reinforcing insect-repellent effects in the initial stage of use, in addition to the normal temperature volatile pseudo-worm In addition to the pyrethroid-based insect-repellent component, a flying pest repellent fragrance composition may be contained.

The flying pest repellent composition is a composition containing a flying pest repellent, and preferably a repellent continuous component.

Examples of the flying pest repellent include a component containing a fragrance component selected from the group consisting of an acetate compound represented by the following formula (I) and/or an allyl ester compound represented by the formula (II). One or two or more kinds of perfume ingredients (a); and one or two or more kinds of perfume ingredients (b) selected from monodecene-based alcohols or aromatic alcohols having a carbon number of 10.

CH ₃ -COO-R ₁ (I)

(wherein R ₁ represents an alcohol residue having a carbon number of 6 to 12)

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 cycloalkyloxy group, or a phenoxy group)

Specific examples of the acetate compound represented by the above formula (I) include acetic acid p-tert-butylcyclohexyl ester, o-tert-butylcyclohexyl acetate, and p-tert-butylcyclohexyl acetate. , tricyclodecenyl acetate, benzyl acetate, phenylethyl acetate, sulphate acetate, anisole acetate, cinnamyl acetate, terpineol acetate, terpineol acetate, agaric acid acetate, ethyl acetate Agarwood ester, citronellyl acetate, geranyl acetate, neryl acetate, acetic acid Ester, and acetic acid Ester and the like.

Further, specific examples of the allyl ester compound represented by the formula (II) include allyl hexanoate, allyl heptate, allyl octylate, allyl isobutoxyacetate, and n-pentane. Allyloxyacetate, allyl cyclohexylacetate, allyl cyclohexylpropionate, allyl cyclohexyloxyacetate, allyl phenoxyacetate, and the like.

Further, specific examples of the component (b) include terpineol, vanillyl alcohol, and dihydromyrcenol. Alcohol, menthol, citronellol, nerol, linalool, ethyl linalool, thymol, eugenol, and p-menthane-3,8-diol, and the like.

The ratio of the above (a) to the above (b) is preferably 0.1 to 1.0 times. It has been confirmed that if it is in this range, it has a higher repellent effect on flying pests.

Further, as the flying pest repellent, a flavor component other than the above may be appropriately added, for example, a monoterpene hydrocarbon such as limonene, menthone, fragrant ketone, and pura. Monoterpene ketones such as ketone, camphor, and thioglycol, monoterpene aldehydes such as citral, citronellal, neral, and threoxal, ester compounds such as cinnamyl formate and geranyl formate, benzene Ethyl ethyl alcohol, diphenyl oxide, indole aroma, or various essential oils containing the above-mentioned flavoring ingredients, such as jasmine oil, neroli oil, peppermint oil, citrus oil, citrus oil, Geranium oil, bitter orange leaf oil, lemon oil, citronella oil, lemon grass oil, cinnamon oil, eucalyptus oil, lemon eucalyptus oil, thyme oil, and the like.

As the continuation component of the repellent effect, one or two or more kinds of diols and/or glycol ethers having a vapor pressure at 20 ° C of 0.2 to 20 Pa are preferably used. Previously, glycols and/or glycol ethers have been listed as solvents in the same manner as ethanol, isopropanol or kerosene, and there is no mention of the effect on flying pests, but the inventors have found that the diol And/or the glycol ether not only acts as a solvent, but also exerts a persistent effect on the repellent effect of the flying pest repellent, and the initial fragrance can be continued when the aromatic flying insects are used to avoid the fragrance.

Specific examples of the above-mentioned repellent effect continuation component (including the vapor pressure at 20 ° C) include propylene glycol (10.7 Pa), dipropylene glycol (1.3 Pa), tripropylene glycol (0.67 Pa), and diethylene glycol ( 3Pa), triethylene glycol (1Pa), 1,3-butanediol, hexanediol (6.7Pa), benzyl glycol (2.7Pa), diethylene glycol monobutyl ether (3Pa), dipropylene glycol monobutyl Ether, and tripropylene glycol monomethyl ether, particularly preferably dipropylene glycol.

The ratio of the above-mentioned repellent effect-sustaining component to the above-mentioned flying pest repellent is preferably 0.2 to 10 times. It has been confirmed that, if it is within this range, the flying pests can be repelled with the fragrance so that the repellent effect is sufficiently continued.

Furthermore, when the above-mentioned flying pest repellent fragrance composition is formulated, the ratio of the above-mentioned normal temperature volatile pyrethroid insect repellent component is suitably about 0.2 to 2 times. When the blending amount of the flavor composition is small, the purpose of imparting the flavor cannot be achieved. On the other hand, if the amount is too large, the flavor is too rich or the waxiness of the insect-repellent component is affected, which is not preferable.

In the case of using the above-mentioned flying pest repellent fragrance composition, when preparing the above-mentioned insecticidal component-containing resin particles, it may also contain a flying pest repellent fragrance composition, preferably preparing the above-mentioned insecticidal component-containing resin particles and containing After flying the pests to avoid the particles of the spice ingredients, the two particles are mixed. The reason is that the heating temperature of the particles containing the flying pests and the perfume ingredients is 90-130 ° C, which is lower than the case of the resin particles containing the insect-repellent components, 110 to 140 ° C, respectively, in the case of preparing the particles, the volatilization Higher flavor perfume compositions are advantageous in terms of reducing losses.

[Content of volatile pyrethroid insecticides at room temperature]

The content of the above-mentioned room temperature volatile pyrethroid insect-repellent component carried by the resin carrier of the above-mentioned drug volatiles varies depending on the type of the insect-repellent component to be used, the use environment, the use conditions, etc., and therefore there is no particular limited. However, in order to secure the amount of the insect-repellent component necessary for the insect-repellent effect, it is easy to form the insect-repellent component, and further, in order to prevent the insect-repellent component from excessively oozing out to the surface of the resin carrier to cause stickiness, it is preferable to set It is 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 is difficult to ensure the amount of the insect-repellent component necessary for the insect-repellent effect, and on the other hand, when the content of the insect-repellent component exceeds 20% by mass, the insect-proofing agent is mixed. The formation after the component is difficult to carry out, and the insect-repellent component is excessively oozing out to the surface of the resin carrier to easily cause stickiness.

Here, the content of the above-mentioned room temperature volatile pyrethroid insect-repellent component is exemplified, and the amount of use is about 30 to 2,000 mg in accordance with the use period of about 30 to 365 days.

In other words, when the content is set, it differs depending on the type of the insect-repellent component to be used. For example, in the case of using Metein alone, the minimum volatile amount necessary to exhibit an insect-repellent effect is 0.03 mg/hr or more, and it is used alone. In the case of trifluthrin, it is 0.03 mg/hr or more, and in the case of using tetrafluthrin alone, it is 0.06 mg/hr or more. Therefore, regarding the content of 30 days to 365 days, the case of Metlin is 30~ In the range of 1000 mg, in the range of 30-1000 mg in the case of fenfluthrin, in the range of 60-2000 mg in the case of tetrafluthrin Just set it inside.

[Other additives]

As described above, the drug volatiles of the present invention may contain the above-mentioned flying pest repellent composition in particular, in order to impart a flavor and a reinforcing insect repellent effect at the initial stage of use, and may also have a boiling point in the range of 250 to 400 ° C, It also allows the aromatic ingredients to last for a longer period of time.

In this case, the period during which the insecticidal effect is obtained by the room temperature volatile pyrethroid insect-repellent component can be linked to the period during which the aromatic effect is obtained by the persistent flavor component, thereby realizing the prevention according to the perceived aroma. The function of the insect effect. Examples of the persistent flavoring component include galaxolide, musk ketone, hexyl cinnamaldehyde, ethyl benzoate, methyl atrarate, hexyl salicylate, tricyclodecene acetate. Ester, orange crystal, ambroxan, cashmeran, watermelon ketone (Calone), geranyl aldehyde, quinone spice, hydrazine, methyl cedarone, methyl beta-naphthalene Ketone, methyl dihydrojasmonate, rose benzophenone, and 7-ethenyl-1,2,3,4,5,6,7,8-octahydro-1,1,6,7-tetramethyl Keina et al.

Further, a synergist, a repellent, an antibacterial agent, an antifungal agent, and other functional components may be used at the same time. For example, as the synergist, thiocyanoacetic acid may be mentioned. Ester (trade name: IBTA), N-octylbicycloheptene carboxy quinone imine (trade name: Synepirin 222), N-(2-ethylhexyl)-1-isopropyl-4-methyl bicyclo [2,2,2]oct-5-ene-2,3-dicarboxy quinone imine (trade name: Synepirin 500) and the like.

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

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

Examples of the antifungal agent include isopropylmethylphenol and o-phenylphenol.

Examples of the other functional component include a reduced-pressure component such as green leaf alcohol or green aldehyde which is called "green scent".

Further, a coloring agent (coloring pigment), an antistatic agent, and the like can be appropriately blended, and when a color or a time indicator is attached and the end time of use can be visually recognized, the value of the product can be further improved.

The room temperature volatile pyrethroid insect-repellent component used in the present invention has sufficient stability, but in order to further improve the stability, a stabilizer such as an antioxidant may be added, for example, 2, 2'-Asia may be used. Methyl bis(4-ethyl-6-tert-butylphenol), 4,4'-methylenebis(2-methyl-6-tert-butylphenol), BHT (Butylated Hydroxytoluene, dibutyl) Hydroxytoluene), BHA (Butylated Hydroxyanisole, dibutylhydroxyanisole), 3,5-di-tert-butyl-4-hydroxyanisole, mercaptobenzimidazole, and the like.

Further, by using an ultraviolet absorber such as an aminobenzoic acid, a cinnamic acid, a salicylic acid, a benzophenone or a benzotriazole as an ultraviolet absorption inhibitor, it is possible to further improve light resistance during storage and use. Sex.

[storage container]

In the present invention, the drug volatilization system is stored in a storage container and used. The plastic container containing the volatile matter of the drug is not particularly limited as long as it is a volatile pyrethroid-based insect-repellent component which can stably volatilize at room temperature, and is preferably a volatilization efficiency. The ratio (opening ratio) of the opening in the container is in the range of 10 to 50% with respect to the total surface area of the container.

Further, when the area of the opening is in the above range, the opening may be located not only on the front surface or the back surface of the container but also on the side surface, the upper surface, and the lower surface. However, if an opening is provided in the side surface, the flow of the air in the storage container becomes effective and preferable. 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 has a cylindrical shape, the container can be set to have a cylindrical shape, for example, for air purification. In the case where the machine is installed, the container can be appropriately simplified to hold the resin carrier only.

Examples of the structure of the plastic container include a plastic member in which a flat plate shape is bent, or a molded article of a plastic body.

In the case where the flat plate-shaped plastic member is bent as described above, the container is used by using the two bent members as a group, and the curved surfaces of the members are assembled so as to overlap each other.

Further, a tongue portion formed by cutting the slit may be provided at an end portion of the curved surface of the bent member, and the hook portion may be extended to be folded back. Further, in this case, a storage window for folding the hook portion may be provided above the back surface. Thereby, the manner of use corresponding to various methods of use can be realized.

That is, when the front end portion of the hook portion shown here is locked to the upper surface portion of the container, for example, when the container is used for outdoor use, the container is scraped off by wind or the like, or when it is hung in the house. When problems such as falling accidentally disappear, you can expect the effect in the place you want to use.

In the above-mentioned plastic molded article, the molding method is not limited as long as it is molded by ordinary injection molding or vacuum molding, and the upper surface and the lower surface, the front surface and the back surface are integrally formed by using a hinge, or By integrating into a single body, the manufacturing steps can be further simplified. Further, in this case, if the hook portion is provided in an upright manner on the upper surface portion of the container, it can be used more effectively.

That is, similarly to the above, if the front end portion of the hook portion shown here is locked to a part of the container at the time of use, for example, an opening portion or a concave portion provided in the upper surface, it is set outdoors. In the case of use, when the container is scraped off by the wind or the like, or when it is suspended in the house, the problem such as accidental dropping during use disappears, and the desired effect can be expected in the place to be used.

Moreover, which part of the container is locked in the case of proper selection at the time of manufacture, but if The locking on the same surface as the surface on which the hook portion is provided prevents the container from moving away from the installation position during use, which is preferable.

As the material of the plastic used in the molding of the flat plate-shaped plastic member or plastic, polyethylene terephthalate, polyethylene, polypropylene, polybutylene terephthalate, nylon can be used. For various plastic materials such as polyamine, polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) is preferably used in consideration of strength or its properties.

Further, the thickness of the plastics can be various, and it is preferable to use 0.05 to 2 mm in terms of the shape of the resin carrier, the relationship with the volatility thereof, and the economy.

[storage bag]

The drug volatilization system of the present invention is usually stored in a container and stored in a non-permeable film bag, and is commercially available, and is opened at the time of use. Needless to say, the drug volatiles may be commercially available only in a non-permeable membrane bag, and the drug volatiles taken out of the bag may be loaded into the container during use. Here, examples of the material of the drug-impermeable film bag include polyester (PET, PBT, etc.), polyamine, polyacetal, and polyacrylonitrile, and the thickness thereof is such that the thickness is not impaired. Determine within the scope. Further, in order to impart heat sealability, the inner surfaces of the non-permeable films may be laminated with a polyethylene or a polypropylene film.

[use]

The volatiles of the medicament prepared by the present invention are in a living room or a Japanese-style room, a porch, a warehouse, a restaurant, a factory or a workshop in a specific period corresponding to the design specifications from about 365 days after use. Inside or its entrances and exits, barns, pig pens and other barns, kennels, rabbits and other pet houses or their surroundings, septic tanks or manholes, camping tents or their entrances and exits, barbecue, fishing, Mosquitoes, cockroaches, cockroaches, flies, Psychodidae, etc., such as housewife, underground mosquitoes (Culex pipiens molestus), Aedes albopictus (Aedes albopictus), etc. Aphids (moth) and the like exert excellent insect control effects. In addition, if it is used to separate the indoor and outdoor windows or balconies, for example, by hooking the hooks to the curtain rails or hanging on the clothes rail, it is also possible to effectively prevent the pests from going outdoors. Intrusion is extremely practical.

Further, the drug volatiles may be formed into a cylindrical shape and used for traction wearing of a pet dog, or the container may be appropriately simplified for use in installation of an air cleaner or the like.

[Characteristics of drug volatiles]

The drug volatiles of the present invention have the above-described configuration and can be stably produced in terms of quality.

[Examples]

Next, the drug volatiles of the present invention will be described using examples. Further, the embodiments described below are merely examples of the present invention, and do not limit the technical scope of the present invention.

First, the method of evaluating the drug used and the performance will be described.

<Use of medicine>

. Metlin (manufactured by Sumitomo Chemical Co., Ltd., Eminence)

. Tefluthrin (manufactured by Sumitomo Chemical Co., Ltd., Biothrin)

. Trifluthrin (manufactured by Sumitomo Chemical Co., Ltd., Fairytale)

. Microcrystalline cerium oxide (manufactured by EVONIK, Carplex #80, white carbon, average particle diameter: 15 μm, hereinafter referred to as "cerium oxide")

. Ethylene-vinyl acetate copolymer (manufactured by Tosoh Co., Ltd., Ultracene 710, ethylene: vinyl acetate unit ratio = 72:28, hereinafter referred to as "EVA")

. Low-density polyethylene (manufactured by Asahi Kasei Co., Ltd., Suntec LDM6520, hereinafter referred to as "LDPE-A")

. Low-density polyethylene (manufactured by Nippon Polyethylene Co., Ltd., Novatec LDLJ802, hereinafter referred to as "LDPE-B")

. Polyethylene terephthalate (Bell Polyester Products, Inc.) Made, Bell pet IP121B, hereinafter referred to as "PET")

<Measurement of water retention ratio>

The obtained drug volatiles were immersed in water for 3 minutes, and then slowly lifted up, and the water retention ratio was calculated by the following formula.

Water retention ratio = (weight of water attached to the volatiles of the drug) / (weight of the drug volatiles)

<Measurement of Volatile Amount before and after Water-Saving Ratio Test>

The obtained drug volatiles were volatilized in a room at 25 ° C for 1 day under a wind speed of 1 m/sec, and the amount of the active ingredient contained in the volatiles of the drug was measured by gas chromatography to calculate the amount of volatilization. Further, immediately after the water retention ratio measurement test, the mixture was volatilized under the same conditions for 2 days, and the amount of the drug volatilization for 2 days was calculated and converted into the amount of the drug volatilization per day. The correlation between the water retention ratio and the water retention ratio was investigated by comparing the water retention ratio before and after the test.

(Examples 1 to 5, 7 to 9, and Comparative Example 1) <Method for Producing Resin Particles>

10 parts by weight of the room temperature volatile pyrethroid insect-repellent component described in Table 1 was heated to 50 ° C and supported on 6 parts by weight of cerium oxide, and 40 parts by weight of EVA and LDPE- were added thereto. A 44 parts by weight is kneaded and extruded at 120 to 140 ° C using a biaxial extrusion molding machine manufactured by Technovel Co., Ltd. to produce a normal temperature volatile pyrethroid insect-repellent component having a diameter of 3 mm and a length of 5 mm. Resin particles.

<Manufacture of a molded body>

100 parts by weight of the resin particles containing the normal temperature volatile pyrethroid insect-repellent component and 300 parts by weight of LDPE-B (including 10 parts by weight of the colorant particles) are kneaded at 120 to 140 ° C, and then put into injection molding. In the machine or the extrusion molding machine, a drug volatile body including the planar network (Examples 7 to 9) shown in Fig. 1 and the three-dimensional structure (Examples 1 to 5 and Comparative Example 1) shown in Fig. 2 was obtained.

Furthermore, the weight, size, and area of the smallest mesh of the drug volatiles are shown in Table 1.

Using the obtained drug volatiles, the water retention ratio and the water retention ratio before and after the test were measured according to the above method. The results are shown in Table 1.

(Example 6, Comparative Example 2, 3)

A PET-processed yarn was used as a chemical impregnated body, and a planar structure was formed on both sides, and the two surfaces were joined by twisted filaments to prepare a three-dimensional structure (woven fabric) having a size shown in Table 1.

Furthermore, the weight, size, and area of the smallest mesh of the three-dimensional structure are as shown in Table 1.

A chemical solution obtained by dissolving the amount of the room temperature volatile pyrethroid insect-repellent component described in Table 1 in 0.25 g of acetone was held in the above-described three-dimensional structure. Using the obtained drug volatiles, the water retention ratio and the water retention ratio before and after the test were measured according to the above method. The results are shown in Table 1.

As a result of the test, in the embodiment of the present invention in which the water retention ratio is in the range of 0.005 or more and 0.5 or less, the degree of reduction of the volatile component of the insect-repellent component is small even after the water retention ratio test, and the adhesion of the rainwater to the insect-repellent component is volatilized. The impact of sex is small. Further, from the results of Example 4 or Example 6, it is understood that the tendency of the water retention ratio is increased in the case of a three-dimensional structure having a small mesh area or in the case of using 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 amount of volatilization immediately after the water retention ratio test was significantly suppressed, and the insecticidal effect was lowered.

[Industrial availability]

The invention is of course applicable to the field of pest control using pharmaceutical volatiles.

1‧‧‧ planar network

Claims (2)

A drug volatile body comprising a structure having a mesh, the mesh comprising a fibrous substance containing a room temperature volatile pyrethroid insect-repellent component, and the above-mentioned drug volatile body is characterized by: the fibrous form The material includes a resin filament, and the water retention ratio of the structure of the structure relative to the weight of the structure is 0.005 or more and 0.5 or less, and the mesh size of the mesh portion of the structure is 10 mm ² or more and 200 mm ² or less. . The drug volatiles according to claim 1, wherein the resin filaments are formed by kneading the above-mentioned room temperature volatile pyrethroid insect-repellent component into a resin carrier.