JP2005095107A - Heat-transpiring device - Google Patents

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JP2005095107A
JP2005095107A JP2003335644A JP2003335644A JP2005095107A JP 2005095107 A JP2005095107 A JP 2005095107A JP 2003335644 A JP2003335644 A JP 2003335644A JP 2003335644 A JP2003335644 A JP 2003335644A JP 2005095107 A JP2005095107 A JP 2005095107A
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chemical solution
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Hirofumi Shimokata
宏文 下方
Hiroshi Asai
洋 浅井
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Dainihon Jochugiku Co Ltd
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Dainihon Jochugiku Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat-transpiring device exhibiting an excellent transpiring performance and insecticidal effectiveness and scarcely causing bend of a liquid-absorbing wick even when applied to a chemical containing a new fluorine-substituted benzyl alcohol ester compound. <P>SOLUTION: The heat-transpiring device is equipped with a chemical vessel in which a chemical liquid containing one or more kinds of compounds selected from fluorine-substituted benzyl alcohol ester compounds represented by general formula (I) (wherein X and Y are the same or different and they are each a hydrogen atom, a methyl group, a halogen atom or a trifluoromethyl group; Z is a hydrogen atom, a methyl group or a methoxymethyl group) as an insecticidal component, a liquid-absorbing wig for absorbing the chemical and a heating element for heating the liquid-absorbing wig and transpiring the chemical. In the device, the height of an inner wall of a hollow cylindrical heat-release cylindrical body constituting the heating element is kept to 8-12 mm and the temperature of a surface part is kept to 120-150°C and the volume of a hollow cylindrical part above the top of a heat-receiving part of the liquid-absorbing wig located opposite to the inner wall of the heat-release cylindrical body is constituted to become 300 mm<SP>3</SP>to 800 mm<SP>3</SP>. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、薬液を吸液芯を用いて加熱蒸散させる加熱蒸散装置の改良に関するものである。 The present invention relates to an improvement of a heating and transpiration device that heats and transcribes a chemical solution using a liquid absorbent core.

従来より、蚊成虫の駆除を目的として薬剤を加熱蒸散させる方式としては、いわゆる蚊取り線香や電気蚊取りマットのほか、液体式電気蚊取り(リキッド)が使用されている。この方式は、一回毎にマットを交換する必要がないことや、一旦セットすれば長期間効果が持続するなどの利点を有し、特にマンションなどの密閉性の高い家屋で需要が大きい。リキッドは、製剤化に用いる溶剤が有機溶剤か水であるかによって油性リキッドもしくは水性リキッドに区別されているが、近年、火気に対する安全性や環境に対する配慮から水性リキッドが増えつつある。そして、その殺虫成分としては、電気蚊取りマットと同様、長年にわたりフラメトリン、アレスリン及びプラレトリンが主流を占めてきた。
最近、新しいピレスロイド系殺虫成分としてトランスフルトリンやメトフルトリンが導入され、リキッドへの適用も検討されている。しかしながら、トランスフルトリンやメトフルトリンは、従来のフラメトリン、アレスリン及びプラレトリンに比べて蒸気圧が高く、また物性も非常に異なるため、そのままの薬液処方や吸液芯の仕様を従来のリキッド用加熱蒸散装置に適用しても、初期の殺虫成分蒸散量が過大となり殺虫効力の持続性が不足するという問題が存する。これを解決する手段としては、1)“薬液処方の改良”、2)“吸液芯仕様の変更”、3)“発熱体温度の低温下”が考えられるが、従来器具が既に市場に行き渡っているので、3)“発熱体温度の低温下”は採用できない。
Conventionally, liquid electric mosquito traps (liquids) have been used as methods for heating and evaporating drugs for the purpose of combating adult mosquitoes, in addition to so-called mosquito coils and electric mosquito traps. This method has the advantage that it is not necessary to change the mat every time, and once set, the effect is maintained for a long period of time, and there is a great demand especially in houses with high sealing properties such as apartments. Liquids are classified into oily liquids or aqueous liquids depending on whether the solvent used for formulation is an organic solvent or water, but in recent years, aqueous liquids are increasing due to safety against fire and environmental considerations. As insecticidal components, flamethrin, allethrin and praretrin have been the mainstream for many years, like electric mosquito mats.
Recently, transfluthrin and metfurthrin have been introduced as new pyrethroid insecticides, and their application to liquids is also being studied. However, transfluthrin and methfluthrin have higher vapor pressures and very different physical properties compared to conventional flamethrin, allethrin, and praretrin. Even if it is applied to the above, there is a problem that the initial amount of transpiration of the insecticidal component becomes excessive and the sustainability of the insecticidal efficacy is insufficient. As means to solve this, 1) “Improvement of chemical formulation”, 2) “Change of liquid core specification”, 3) “Low temperature of heating element” can be considered, but conventional devices have already spread to the market. 3) “Low temperature of heating element” cannot be adopted.

上記1)“薬液処方の改良”の一環として、高沸点溶剤を配合する提案がある。例えば、特開2003−81720号公報には、メトフルトリンとチオテック(パラフィンとナフテン系炭化水素の略6:4混合物)から調製された加熱蒸散用害虫防除液が記載されているが、この方法は当然のことながら、水性リキッドには適用できず、油性リキッドに限定される。
一方、2)“吸液芯仕様の変更”の観点では、例えば、実用新案登録公報第2554711号に、放熱筒体内壁に対向する吸液芯の受熱部の長さを放熱筒体内壁の高さの0.3〜0.8倍とすることによって、殺虫成分蒸散量を低くできうることが開示されている。しかしながら、該公報に記載の技術は、明細書で説明されているようにd−T80−フラメトリンとd,d−T80−プラレトリンに特定されるものであり、本発明で用いられる殺虫成分、即ち一般式(I)で表されるフッ素置換ベンジルアルコールエステル化合物とは上述のとおり物性が異なり、そのまま適用できない。更に、従来の粘結型吸液芯についていえば、その上面が放熱筒体の上面と同等もしくは若干高めに位置するように設計し、吸液芯の粗密により蒸散量を調整しているのが一般的である。このため、薬液容器のキャップを取り外す際や薬液容器を発熱体に装着する際に、吸液芯がキャップや放熱筒体に触れて折れやすいという問題点を残している。
特開2003−81720号公報 実用新案登録公報第2554711号
As part of the above 1) “Improvement of chemical formulation”, there is a proposal to incorporate a high boiling point solvent. For example, Japanese Patent Application Laid-Open No. 2003-81720 describes a heat transpiration pest control solution prepared from metfurthrin and thiotech (approximately 6: 4 mixture of paraffin and naphthenic hydrocarbon). However, it is not applicable to aqueous liquids and is limited to oily liquids.
On the other hand, 2) From the viewpoint of “change of liquid absorption core specification”, for example, in Utility Model Registration Publication No. 2554711, the length of the heat receiving portion of the liquid absorption core facing the wall of the heat radiating cylinder is increased. It is disclosed that the amount of transpiration of insecticidal components can be reduced by setting the amount to 0.3 to 0.8 times the thickness. However, as described in the specification, the technique described in the publication is specific to d-T80-flamethrin and d, d-T80-praretrin, and is used as an insecticidal component used in the present invention. It differs from the fluorine-substituted benzyl alcohol ester compound represented by the formula (I) as described above and cannot be applied as it is. Furthermore, with regard to the conventional caking type absorbent core, the upper surface thereof is designed to be located at or slightly higher than the upper surface of the heat radiating cylinder, and the amount of transpiration is adjusted by the density of the absorbent core. It is common. For this reason, when removing the cap of a chemical | medical solution container, or when mounting | wearing a chemical | medical solution container with a heat generating body, the problem that a liquid absorption core touches a cap and a thermal radiation cylinder and it is easy to be broken remains.
JP 2003-81720 A Utility Model Registration Gazette No. 2554711

本発明は、薬液処方や発熱体温度を変更することなく、吸液芯の仕様や発熱体との位置関係を特定することによって、一般式(I)で表されるフッ素置換ベンジルアルコールエステル化合物を含む薬液に適用しても優れた蒸散性能と殺虫効力を奏し、しかも吸液芯が折れにくい構成の加熱蒸散装置を提供することを目的とする。 The present invention provides a fluorine-substituted benzyl alcohol ester compound represented by the general formula (I) by specifying the liquid absorption core and the positional relationship with the heating element without changing the chemical formulation and the heating element temperature. It is an object of the present invention to provide a heat transpiration device having a structure that exhibits excellent transpiration performance and insecticidal efficacy even when applied to a chemical solution, and that is difficult to break the liquid absorption core.

本発明は、上記課題を解決するため、次のような構成を採用する。
(1)殺虫成分として、一般式(I)

Figure 2005095107

(式中、X及びYは同一又は相異なって水素原子、メチル基、ハロゲン原子又はトリフルオロメチル基を表し、Zは水素原子、メチル基又はメトキシメチル基を表す)で表されるフッ素置換ベンジルアルコールエステル化合物から選ばれた1種又は2種を含む薬液が収容された薬液容器、該薬液を吸液する吸液芯、及び該吸液芯を加熱して薬液を蒸散させる発熱体を備え、前記発熱体を構成する中空筒状の放熱筒体内壁の高さを8〜12mm、かつ表面部の温度を120〜150℃とし、しかもこの放熱筒体内壁に対向して位置する前記吸液芯の受熱部先端上方の中空筒状部分の体積が300mm3〜800mm3になるようにした加熱蒸散装置。
(2)薬液が、殺虫成分を0.2〜2.0重量%、100〜180℃の加熱温度で蒸散する界面活性剤を10〜80重量%、及び水を18〜88重量%含有する水性薬液である(1)に記載の加熱蒸散装置。
(3)薬液が、殺虫成分を0.2〜2.0重量%、及び沸点温度(95重量%留出温度)範囲が240〜300℃の灯油を97重量%以上含有する油性薬液である(1)に記載の加熱蒸散装置。
(4)吸液芯の受熱部と、発熱体の放熱筒体内壁との間隙が、1.2〜1.7mmである(1)ないし(3)のいずれかに記載の加熱蒸散装置。 In order to solve the above problems, the present invention employs the following configuration.
(1) General formula (I) as an insecticidal component
Figure 2005095107

(Wherein X and Y are the same or different and represent a hydrogen atom, a methyl group, a halogen atom or a trifluoromethyl group, and Z represents a hydrogen atom, a methyl group or a methoxymethyl group) A chemical solution container containing a chemical solution containing one or two kinds selected from alcohol ester compounds, a liquid absorbent core for absorbing the chemical solution, and a heating element for heating the liquid absorbent core to evaporate the chemical solution, The liquid-absorbing core is positioned so as to have a height of 8 to 12 mm and a surface temperature of 120 to 150 ° C., and facing the wall of the heat radiating cylinder. heating transpiration apparatus volume of the hollow cylindrical portion of the heat receiving tip above was set to 300mm 3 ~800mm 3 of.
(2) An aqueous solution containing 0.2 to 2.0% by weight of an insecticidal component, 10 to 80% by weight of a surfactant that evaporates at a heating temperature of 100 to 180 ° C., and 18 to 88% by weight of water. The heat evaporation apparatus according to (1), which is a chemical solution.
(3) The chemical solution is an oily chemical solution containing 0.2 to 2.0% by weight of the insecticidal component and 97% by weight or more of kerosene having a boiling point temperature (95% by weight distillation temperature) range of 240 to 300 ° C. ( The heating transpiration apparatus as described in 1).
(4) The heating and transpiration apparatus according to any one of (1) to (3), wherein a gap between the heat receiving portion of the liquid absorption core and the heat radiating cylinder wall of the heating element is 1.2 to 1.7 mm.

本発明の加熱蒸散装置は、殺虫成分として、従来のピレスロイド化合物に比べて蒸気圧が高くしかも高活性な一般式(I)で表されるフッ素置換ベンジルアルコールエステル化合物を使用し、優れた蒸散性能と殺虫効力を奏するとともに、吸液芯が折れにくい構成を提供するので、その実用性は極めて高い。 The heat transpiration apparatus of the present invention uses a fluorine-substituted benzyl alcohol ester compound represented by the general formula (I) having a higher vapor pressure and higher activity than the conventional pyrethroid compound as an insecticidal component, and has excellent transpiration performance. In addition to providing an insecticidal effect and providing a structure in which the liquid absorbent core is not easily broken, its practicality is extremely high.

本発明で用いられる殺虫成分は、一般式(I)

Figure 2005095107

(式中、X及びYは同一又は相異なって水素原子、メチル基、ハロゲン原子又はトリフルオロメチル基を表し、Zは水素原子、メチル基又はメトキシメチル基を表す)で表されるフッ素置換ベンジルアルコールエステル化合物から選ばれた1種又は2種であり、従来のフラメトリン、アレスリン及びプラレトリンに比べて蒸気圧が高く、蚊、ハエ、ゴキブリなどの害虫に対する基礎殺虫効力も優れている。
いずれの殺虫成分にも、酸成分の不斉炭素に基づく光学異性体や幾何異性体が存在するが、それらの各々や任意の混合物も本発明に包含されることはもちろんである。 The insecticidal component used in the present invention has the general formula (I)
Figure 2005095107

(Wherein X and Y are the same or different and represent a hydrogen atom, a methyl group, a halogen atom or a trifluoromethyl group, and Z represents a hydrogen atom, a methyl group or a methoxymethyl group) It is one or two selected from alcohol ester compounds, has a higher vapor pressure than conventional framethrin, allethrin and praretrin, and is excellent in basic insecticidal efficacy against pests such as mosquitoes, flies and cockroaches.
Any of the insecticidal components includes optical isomers and geometric isomers based on the asymmetric carbon of the acid component, and it goes without saying that each or any mixture thereof is also included in the present invention.

一般式(I)で表される化合物の具体例としては、2,3,5,6−テトラフルオロベンジル−クリサンテマート(以後、化合物Aと称す)、2,3,5,6−テトラフルオロベンジル−2,2−ジメチル−3−(1−プロペニル)シクロプロパンカルボキシレート(以後、化合物Bと称す)、2,3,5,6−テトラフルオロベンジル−2,2−ジメチル−3−(2,2−ジクロロビニル)シクロプロパンカルボキシレート(トランスフルトリン:以後、化合物Cと称す)、4−メチル−2,3,5,6−テトラフルオロベンジル−クリサンテマート(以後、化合物Dと称す)、4−メチル−2,3,5,6−テトラフルオロベンジル−2,2−ジメチル−3−(1−プロペニル)シクロプロパンカルボキシレート(以後、化合物Eと称す)、4−メチル−2,3,5,6−テトラフルオロベンジル−2,2−ジメチル−3−(2,2−ジフルオロビニル)シクロプロパンカルボキシレート(以後、化合物Fと称す)、4−メトキシメチル−2,3,5,6−テトラフルオロベンジル−クリサンテマート(以後、化合物Gと称す)、4−メトキシメチル−2,3,5,6−テトラフルオロベンジル−2,2−ジメチル−3−(1−プロペニル)シクロプロパンカルボキシレート(メトフルトリン:以後、化合物Hと称す)、及び4−メトキシメチル−2,3,5,6−テトラフルオロベンジル−2,2−ジメチル−3−(2−クロロ−2−トリフルオロメチルビニル)シクロプロパンカルボキシレート(以後、化合物Iと称す)をあげることができる。 Specific examples of the compound represented by the general formula (I) include 2,3,5,6-tetrafluorobenzyl-chrysanthemate (hereinafter referred to as Compound A), 2,3,5,6-tetrafluoro. Benzyl-2,2-dimethyl-3- (1-propenyl) cyclopropanecarboxylate (hereinafter referred to as Compound B), 2,3,5,6-tetrafluorobenzyl-2,2-dimethyl-3- (2 , 2-dichlorovinyl) cyclopropanecarboxylate (transfluthrin: hereinafter referred to as compound C), 4-methyl-2,3,5,6-tetrafluorobenzyl-chrysanthemate (hereinafter referred to as compound D) 4-methyl-2,3,5,6-tetrafluorobenzyl-2,2-dimethyl-3- (1-propenyl) cyclopropanecarboxylate (hereinafter referred to as Compound E) 4-methyl-2,3,5,6-tetrafluorobenzyl-2,2-dimethyl-3- (2,2-difluorovinyl) cyclopropanecarboxylate (hereinafter referred to as Compound F), 4-methoxymethyl 2,3,5,6-tetrafluorobenzyl-chrysanthemate (hereinafter referred to as Compound G), 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl-2,2-dimethyl-3- (1-propenyl) cyclopropanecarboxylate (metofluthrin: hereinafter referred to as Compound H), and 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl-2,2-dimethyl-3- (2-chloro -2-trifluoromethylvinyl) cyclopropanecarboxylate (hereinafter referred to as Compound I).

本発明では、薬液中の殺虫成分濃度は、0.2〜2.0重量%の範囲に設定される。0.2重量%未満であると当然のことながら殺虫効力が不足し、一方2.0重量%を超えると殺虫成分の蒸散性能を安定化させるのが難しくなる傾向がある。 In this invention, the insecticidal component density | concentration in a chemical | medical solution is set to the range of 0.2-2.0 weight%. If the amount is less than 0.2% by weight, the insecticidal efficacy is naturally insufficient. On the other hand, if it exceeds 2.0% by weight, it tends to be difficult to stabilize the transpiration performance of the insecticidal component.

本発明の加熱蒸散装置に供される薬液は、水性薬液であっても、油性薬液であってもよいが、引火性の問題を解消できる点で水性薬液が好ましい。
水性薬液は、殺虫成分を0.2〜2.0重量%、100〜180℃の加熱温度で蒸散する界面活性剤を10〜80重量%、好ましくは45〜70重量%、及び水を18〜88重量%、好ましくは28〜53重量%含有してなり、可溶化状を呈するものが適している。界面活性剤としては、非イオン型のものが好ましく、例えば、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレン脂肪酸エステル、多価アルコール脂肪酸部分エステル、多価アルコール部分エーテル、ポリオキシエチレンポリオキシプロピレングリコール、ヘキサンジオールやペンタンジオールなどのアルカンジオールなどをあげることができる。
特に好ましい具体例を示せば、ジエチレングリコールモノプロピルエーテル、ジエチレングリコールモノブチルエーテル、トリエチレングリコールモノプロピルエーテル、トリエチレングリコールモノブチルエーテルがあげられる。
The chemical solution used in the heat evaporation apparatus of the present invention may be an aqueous chemical solution or an oily chemical solution, but an aqueous chemical solution is preferable in that it can solve the problem of flammability.
The aqueous chemical solution is 0.2 to 2.0% by weight of the insecticidal component, 10 to 80% by weight of the surfactant that evaporates at a heating temperature of 100 to 180 ° C., preferably 45 to 70% by weight, and 18 to 18% of water. A composition containing 88% by weight, preferably 28 to 53% by weight, and exhibiting a solubilized state is suitable. The surfactant is preferably a nonionic type, for example, polyoxyalkylene alkyl ether, polyoxyethylene fatty acid ester, polyhydric alcohol fatty acid partial ester, polyhydric alcohol partial ether, polyoxyethylene polyoxypropylene glycol, hexane. Examples include alkanediols such as diols and pentanediols.
Examples of particularly preferred examples include diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, triethylene glycol monopropyl ether, and triethylene glycol monobutyl ether.

一方、油性薬液は、殺虫成分0.2〜2.0重量%を、沸点温度(95重量%留出温度)範囲が240〜300℃の灯油97重量%以上に溶解したものである。特開2003−81720号公報によれば、沸点温度(95重量%留出温度)が300℃を超えるナフテン系炭化水素を配合することによって、例えば、殺虫成分・メトフルトリンの蒸散性を抑えることが可能となる。しかしながら、本発明は、より安全性の高い灯油成分の使用を優先し、ナフテン系炭化水素を配合せずに蒸散調整をなしえる手段を目指したものである。
沸点温度(95重量%留出温度)範囲が240〜300℃の灯油としては、例えば、ノルマルパラフィンとして、日本石油化学株式会社製のソルベントH、中央化成株式会社製のデオトミゾールSならびにネオチオゾールS、日鉱石油化学株式会社製のSH−NPを、イソパラフィンとして、エクソン化学株式会社製のアイソパーV、出光石油化学株式会社製のIPソルベント−2028、シェルジャパン株式会社製のシェルゾールTMなどを例示できる。
On the other hand, the oily chemical solution is obtained by dissolving 0.2 to 2.0% by weight of the insecticidal component in 97% or more of kerosene having a boiling point temperature (95% by weight distillation temperature) range of 240 to 300 ° C. According to Japanese Patent Laid-Open No. 2003-81720, for example, by blending a naphthenic hydrocarbon having a boiling point temperature (95% by weight distillation temperature) exceeding 300 ° C., for example, it is possible to suppress the transpiration of the insecticidal component / methofurrin. It becomes. However, the present invention gives priority to the use of kerosene components with higher safety, and aims at means for adjusting transpiration without blending naphthenic hydrocarbons.
As kerosene having a boiling point temperature (95% by weight distillation temperature) range of 240 to 300 ° C., for example, normal paraffin, Nippon Petrochemical Co., Ltd. Solvent H, Chuo Kasei Co., Ltd. Deotomisole S and Neothiozol S, Nikko Examples of SH-NP manufactured by Petrochemical Co., Ltd. include Isopar V manufactured by Exxon Chemical Co., Ltd., IP Solvent-2028 manufactured by Idemitsu Petrochemical Co., Ltd., Shellsol TM manufactured by Shell Japan Co., Ltd., and the like.

また、本発明で用いる薬液は、本発明の趣旨に支障を来たさない限りにおいて、必要に応じ、フラメトリン、アレスリン、プラレトリン、エムペントリン等の他のピレスロイド剤、有機リン剤、カーバメート剤などの殺虫剤、殺菌剤、殺ダニ剤、忌避剤、消臭剤、芳香剤などを配合して多目的組成物とすることも可能である。
更に、BHT、BHA、DBHQ、t−ブチルカテコールなどのフェノール系安定剤、ベンゾフェノン系、ベンゾトリアゾール系などの紫外線吸収剤を安定化のために添加することもできる。
In addition, as long as the chemical solution used in the present invention does not hinder the gist of the present invention, insecticides such as other pyrethroids such as flamethrin, allethrin, praretrin, empentrin, organic phosphorus agents, carbamate agents, etc. An agent, bactericidal agent, acaricide, repellent, deodorant, fragrance and the like can be blended to form a multipurpose composition.
Further, phenol stabilizers such as BHT, BHA, DBHQ, and t-butylcatechol, and ultraviolet absorbers such as benzophenone and benzotriazole may be added for stabilization.

こうして調製された薬液を、ポリプロピレン、ポリエステル、ポリ塩化ビニールなどのプラスチック製薬液容器に収容し、中栓を介して吸液芯を装填した後、発熱体を備えた本発明の加熱蒸散装置に装着して薬液を加熱蒸散させる。本発明は、発熱体を構成する中空筒状の放熱筒体内壁の高さを8〜12mm、かつ表面部の温度を120〜150℃とし、しかもこの放熱筒体内壁に対向して位置する吸液芯の受熱部先端上方の中空筒状部分の体積が300mm3〜800mm3になるようにしたことに特徴を有する。
すなわち、本発明で用いる一般式(I)のフッ素置換ベンジルアルコールエステル化合物に対しては、受熱部先端上方に体積が300mm3〜800mm3の中空筒状部分を形成させることによって、殺虫成分の蒸散効率が向上、安定し、30日以上の長期間にわたり、一定の蒸散性能と殺虫効力を保持しえることを見出したものである。
d−T80−フラメトリンやd,d−T80−プラレトリンの場合、実用新案登録公報第2554711号に示されているように、蒸散性能の調整は、放熱筒体内壁の高さに対する吸液芯の受熱部の長さを特定して可能となったが、本発明では、受熱部先端上方に形成される中空筒状部分の体積が蒸散性能により大きな影響を及ぼすことが認められた。これは、一般式(I)のフッ素置換ベンジルアルコールエステル化合物の物性が、d−T80−フラメトリンやd,d−T80−プラレトリンと非常に異なるためと推測される。
The chemical solution thus prepared is stored in a plastic pharmaceutical container such as polypropylene, polyester, polyvinyl chloride, etc., and a liquid absorption core is loaded through an inner plug, and then mounted on the heating and transpiration device of the present invention equipped with a heating element. Then, the chemical is evaporated by heating. In the present invention, the height of the hollow cylindrical heat radiating cylinder wall constituting the heating element is set to 8 to 12 mm, and the surface temperature is set to 120 to 150 ° C. characterized in that the volume of the hollow cylindrical portion of the heat receiving tip above the liquid core was set to 300mm 3 ~800mm 3.
That is, for the fluorine-substituted benzyl alcohol ester compound of general formula (I) used in the present invention, by volume heat receiving tip upward to form a hollow cylindrical portion of 300mm 3 ~800mm 3, evaporation of insecticidal component It has been found that the efficiency is improved and stable, and the transpiration performance and insecticidal efficacy can be maintained over a long period of 30 days or longer.
In the case of d-T80-flamethrin and d, d-T80-praretrin, as shown in Utility Model Registration Publication No. 2554711, the adjustment of the transpiration performance is performed by the heat absorption core receiving heat with respect to the height of the heat radiating cylinder inner wall. Although it became possible by specifying the length of the part, in the present invention, it was recognized that the volume of the hollow cylindrical part formed above the tip of the heat receiving part has a great influence on the transpiration performance. This is presumably because the physical properties of the fluorine-substituted benzyl alcohol ester compound of the general formula (I) are very different from d-T80-flamethrin and d, d-T80-praretrin.

本発明で用いる吸液芯の材質、形状は何ら制限を受けるものでなく、クレー、タルク、パーライト、珪藻土等の無機質材料を糊剤で固め、あるいは更にこれを焼成した粘結型吸液芯の外、フェルト、綿、多孔質セラミックス、多孔質蒸散層からなり、好ましくはその周囲をガラス、無機繊維、プラスチック等の保持材で被覆したものなどがあげられる。そして、本発明によれば、前記粘結型吸液芯において、薬液容器のキャップ取り外しや薬液容器の発熱体への装着時に、吸液芯がキャップや放熱筒体に触れる機会が減少し、折れを防止できるというメリットが付与される。なお、吸液芯に、色素、防腐剤、4,4−メチレンビス(2−メチル−6−t−ブチルフェノール)、ステアリル−β−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート等の酸化防止剤を適宜添加してもよい。 The material and shape of the liquid absorbent core used in the present invention are not subject to any restrictions, and the caking type liquid absorbent core is obtained by solidifying an inorganic material such as clay, talc, pearlite, diatomaceous earth, etc. with a paste, or further firing this. It is composed of an outer layer, felt, cotton, porous ceramics, and a porous transpiration layer, and the periphery thereof is preferably coated with a holding material such as glass, inorganic fiber, or plastic. According to the present invention, in the caking type liquid absorbent wick, when the chemical liquid container cap is removed or the chemical liquid container is attached to the heating element, the chance that the liquid absorbent wick contacts the cap or the heat radiating cylinder is reduced and broken. The merit that can be prevented is given. In addition, a dye, an antiseptic, 4,4-methylenebis (2-methyl-6-tert-butylphenol), stearyl-β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate in the liquid absorption core You may add antioxidants, such as these, suitably.

発熱体の放熱筒体内壁については、従来の加熱蒸散装置の仕様に準じて、その高さは8〜12mm、かつ表面部の温度は120〜150℃に設定される。一般式(I)のフッ素置換ベンジルアルコールエステル化合物に適合させるため、120℃未満に設計することも可能であるが、従来のリキッドとの互換性が失われるので、この方式は採用しない。
また、放熱筒体内壁と吸液芯受熱部との間隙は、受熱部先端上方に形成される中空筒状部分の体積と密接に関連し、1.2〜1.7mmが好ましいことが認められた。
About the wall of the thermal radiation cylinder of a heat generating body, the height is set to 8-12 mm and the temperature of a surface part is set to 120-150 degreeC according to the specification of the conventional heat evaporation apparatus. In order to adapt to the fluorine-substituted benzyl alcohol ester compound of the general formula (I), it is possible to design at less than 120 ° C., but this method is not adopted because compatibility with the conventional liquid is lost.
Further, it is recognized that the gap between the heat radiating cylinder inner wall and the liquid absorption core heat receiving portion is closely related to the volume of the hollow cylindrical portion formed above the tip of the heat receiving portion and is preferably 1.2 to 1.7 mm. It was.

本発明の加熱蒸散装置は、前記構成に加え、従来の装置に準じて種々の機能や部材が付設されうる。発熱体の上部には安全上保護キャップが載置され、その中央部に開口部が形成されるが、その大きさ、形状は蒸散薬液が過度に保護キャップや器体に凝縮、付着しない限りにおいて任意である。例えば、内径10〜30mmの円筒状蒸散筒を開口部付近から垂下させることは有効であり、この場合、蒸散筒部分の耐熱性や蒸散性能の面から、蒸散筒下端と発熱体上面との距離は通常1〜5mmの範囲内が好ましい。
また、発熱体と接続する電源コード、オンオフ操作スイッチ、パイロットランプなどが適宜付設されてもよいことはもちろんである。
In addition to the above configuration, the heating and transpiration apparatus of the present invention can be provided with various functions and members in accordance with conventional apparatuses. A protective cap is placed on the top of the heating element for safety, and an opening is formed in the center of the cap, but the size and shape of the heating element are limited as long as the vaporized chemical solution does not excessively condense and adhere to the protective cap or vessel. Is optional. For example, it is effective to hang a cylindrical transpiration cylinder having an inner diameter of 10 to 30 mm from the vicinity of the opening. In this case, the distance between the lower end of the transpiration cylinder and the upper surface of the heating element in terms of heat resistance and transpiration performance of the transpiration cylinder portion. Is usually preferably in the range of 1 to 5 mm.
Of course, a power cord connected to the heating element, an on / off operation switch, a pilot lamp, and the like may be appropriately attached.

かかる本発明の加熱蒸散装置を用いて防除しえる害虫としては、各種の有害昆虫、ダニ類等をあげることができ、特に有害飛翔性昆虫、すなわち、アカイエカ、コガタアカイエカ、ネッタイイエカ、チカイエカ等のイエカ類、ネッタイシマカ、ヒトスジシマカ等のヤブカ類、ユスリカ類、イエバエ類、チョウバエ類、ノミバエ類、アブ類、ブユ類、ヌカカ類などがあげられる。 Examples of the pests that can be controlled using the heat transpiration apparatus of the present invention include various harmful insects, mites, and the like, and particularly harmful flying insects, that is, squids such as squid, moth, mosquito, and chikaeka. Aedes such as Aedes aegypti and Aedes aegypti, chironomids, house flies, butterflies, fleas, abs, flyfish, nukaka and the like.

次に、具体的実施例に基づいて、本発明の加熱蒸散装置を更に詳細に説明するが、本発明はこれに限定されるものではない。 Next, the heating and transpiration apparatus of the present invention will be described in more detail based on specific examples, but the present invention is not limited to this.

本発明の加熱蒸散装置の一実施例を図1に示す。
図中、薬液容器1は薬液2を収容し、その薬液注入口部において、吸液芯3が中栓4を介して略密栓状に保持されている。加熱蒸散装置には、リング状(あるいは一対の半環状)の発熱体5が固定され、その内側に中空筒状の放熱筒体内壁6(内径:10mm、高さ:11mm、表面温度:135℃)を構成する。また、上方には開口部7と円筒状の蒸散筒8が設けられ、発熱体5に接続して電源コード9やオンオフ操作スイッチ10が付設されている。そして、薬液容器1を加熱蒸散装置に装着すると、吸液芯3の先端受熱部が間隙をもって放熱筒体内壁6と対向し、その上方に中空筒状部11を形成する。
図示するものは、本発明の加熱蒸散装置の好適な一例であるが、これに限らず各種形状の装置を使用できることは言うまでもない。
One embodiment of the heat evaporation apparatus of the present invention is shown in FIG.
In the figure, a chemical solution container 1 contains a chemical solution 2, and a liquid absorption core 3 is held in a substantially sealed shape via an inner plug 4 at the chemical solution inlet. A ring-shaped (or a pair of semi-annular) heating element 5 is fixed to the heating transpiration device, and a hollow cylindrical heat radiating cylinder inner wall 6 (inner diameter: 10 mm, height: 11 mm, surface temperature: 135 ° C.) ). In addition, an opening 7 and a cylindrical evaporation cylinder 8 are provided above, and a power cord 9 and an on / off operation switch 10 are attached to the heating element 5. When the chemical container 1 is attached to the heating and transpiration device, the tip heat receiving portion of the liquid absorbing core 3 faces the heat radiating cylinder inner wall 6 with a gap, and the hollow cylindrical portion 11 is formed above the heat receiving portion.
What is shown is a preferred example of the heating and transpiration device of the present invention, but it is needless to say that the present invention is not limited to this, and devices of various shapes can be used.

化合物Hを0.5重量%、ジエチレングリコールモノブチルエーテルを70重量%、安定剤としてのBHTを0.2重量%、及び精製水を含有する60日用の水性薬液(2)45mLを内容積50mLのプラスチック製薬液容器1に収容し、中栓4を介して吸液芯3を装填した。なお、吸液芯3としては、タルク粉43重量部、生コークス粉30重量部、木粉6重量部、クレー19重量部、澱粉2重量部からなる粉体に水を加え混練、加圧押出し、風乾後、1000℃で焼成したもの(直径7mm、長さ64mmの丸棒)を用いた。
薬液容器1を加熱蒸散装置に取り付けるにあたり、吸液芯3は物理的に折れる心配がなく、吸液芯3と放熱筒体内壁6の間隙は1.5mmで、中空筒状部11の体積は470mm3であった。
この加熱蒸散装置を6畳の部屋の中央に置き通電使用したところ、60日間(約700時間)にわたり安定した蒸散性能を示し、蚊に刺されることはなかった。
Compound H for 0.5 days containing 0.5% by weight of Compound H, 70% by weight of diethylene glycol monobutyl ether, 0.2% by weight of BHT as a stabilizer, and purified water (2) 45 mL It was accommodated in a plastic pharmaceutical liquid container 1 and a liquid absorbent core 3 was loaded through an inner plug 4. As the liquid absorbent core 3, water is added to a powder comprising 43 parts by weight of talc powder, 30 parts by weight of raw coke powder, 6 parts by weight of wood powder, 19 parts by weight of clay, and 2 parts by weight of starch, and the mixture is kneaded and pressure-extruded. Then, air-dried and fired at 1000 ° C. (round bar with a diameter of 7 mm and a length of 64 mm) was used.
When the chemical container 1 is attached to the heating transpiration device, the liquid absorption core 3 is not physically broken, the gap between the liquid absorption core 3 and the heat radiating cylinder inner wall 6 is 1.5 mm, and the volume of the hollow cylindrical portion 11 is It was 470 mm 3 .
When this heating transpiration device was placed in the center of a 6 tatami room and energized, it showed stable transpiration performance for 60 days (about 700 hours) and was not bitten by mosquitoes.

実施例1に準じて表1に示す60日用の各種加熱蒸散装置を調製した。なお、表中、下記の略号を用いた。
・界面活性剤:Aa;ジエチレングリコールモノブチルエーテル
Ab;トリエチレングリコールモノプロピルエーテル
Ac;グリセロールジアセテート(ジアセチン)
・ノルマルパラフィン:Ba;デオトミゾールS(中央化成株式会社製)、
Bb;ソルベントH(日本石油化学株式会社製)
・イソパラフィン:Ca;アイソパーV(エクソン化学株式会社製)、
Cb;IPソルベント−2028(出光石油化学株式会社製)、
・ナフテン系炭化水素:
Da;日石ナフテゾールH(日本石油化学株式会社製)、
・吸液芯 : [I];タルク粉43重量部、生コークス粉30重量部、木粉6重量部、クレー19重量部、澱粉2重量部からなる粉体に水を加え混練、加圧押出し、風乾後、1000℃で焼成したもの(直径7mmの丸棒)
[II];パーライト60重量部及び木粉20重量部に澱粉20重量部と水を加え練合後、押出し成形乾燥したもの(形状は[I]に同じ)。
According to Example 1, various heating transpiration devices for 60 days shown in Table 1 were prepared. In the table, the following abbreviations were used.
Surfactant: Aa; diethylene glycol monobutyl ether
Ab; triethylene glycol monopropyl ether
Ac; glycerol diacetate (diacetin)
Normal paraffin: Ba; Deotomisole S (manufactured by Chuo Kasei Co., Ltd.),
Bb: Solvent H (Nippon Petrochemical Co., Ltd.)
Isoparaffin: Ca; Isopar V (manufactured by Exxon Chemical Co., Ltd.),
Cb: IP solvent-2028 (manufactured by Idemitsu Petrochemical Co., Ltd.)
・ Naphthenic hydrocarbons:
Da: Nisseki Naphthezol H (manufactured by Nippon Petrochemical Co., Ltd.),
Liquid absorption core: [I]; water is added to a powder composed of 43 parts by weight of talc powder, 30 parts by weight of raw coke powder, 6 parts by weight of wood powder, 19 parts by weight of clay, and 2 parts by weight of starch, and kneaded and pressure-extruded. Baked at 1000 ° C after air drying (round bar with a diameter of 7 mm)
[II]: 60 parts by weight of pearlite and 20 parts by weight of wood flour, 20 parts by weight of starch and water, kneaded, extruded and dried (the shape is the same as [I]).

Figure 2005095107
Figure 2005095107

表1の各種加熱蒸散装置を用いて以下の試験を実施した。その結果を表2に示す。
(1)蒸散性能:使用開始直後、使用300時間後及び使用700時間後に、シリカゲル充填剤カラムで空気をトラップし、アセトンで殺虫成分を抽出後、ガスクロマトグラフィで分析した。結果を1時間あたりの殺虫成分の蒸散量(mg/h)で示した。
(2)殺虫効力:使用開始直後、使用300時間後及び使用700時間後に、連続通気法により蚊成虫に対するノックダウン効果を調べた。d,d−T80−プラレトリンを1.72重量%含有する市販の油性リキッド(60日用)の使用開始直後の殺虫効力を1.00として相対有効比で示した。
[連続通気法]
内径20cm、高さ43cmのプラスチック製円筒を2段に重ね、その上に16メツシュの金網で上下に仕切った内径及び高さが共に20cmの円筒(供試蚊を入れる場所)を載せ、更に内径20cm、高さ20cmの円筒を載せる。この4段重ねの円筒を台に載せ、台の中央に加熱蒸散器を置いて薬液を揮散させる。上から2段目の円筒に供試蚊約20匹を放ち、時間の経過に伴う該供試蚊の仰転数を観察する。暴露20分後に全供試蚊を清潔なポリエチレン容器に移し、3%砂糖水を与え、保存24時間後に死虫率を調べる。
The following tests were carried out using the various heat transpiration devices shown in Table 1. The results are shown in Table 2.
(1) Transpiration performance: Immediately after the start of use, after 300 hours of use and after 700 hours of use, air was trapped with a silica gel packing column, and insecticidal components were extracted with acetone, and then analyzed by gas chromatography. The results are shown as the amount of transpiration of the insecticidal component per hour (mg / h).
(2) Insecticidal efficacy: Immediately after the start of use, 300 hours after use and 700 hours after use, the knockdown effect on adult mosquitoes was examined by a continuous ventilation method. The insecticidal efficacy immediately after the start of use of a commercially available oily liquid (for 60 days) containing 1.72% by weight of d, d-T80-praretrin was shown as a relative effective ratio as 1.00.
[Continuous ventilation method]
A plastic cylinder with an inner diameter of 20 cm and a height of 43 cm is stacked in two stages, and a cylinder (place for placing the test mosquito) with an inner diameter and height of 20 cm, both of which are divided vertically by a 16 mesh wire mesh, is placed on the cylinder. A cylinder with a height of 20 cm and a height of 20 cm is placed. This four-stage cylinder is placed on a table, and a heating evaporator is placed in the center of the table to evaporate the chemical solution. About 20 test mosquitoes are released into the second-stage cylinder from the top, and the number of the test mosquitoes over time is observed. 20 minutes after exposure, all test mosquitoes are transferred to a clean polyethylene container, given 3% sugar water, and examined for mortality 24 hours after storage.

Figure 2005095107
Figure 2005095107

試験の結果、本発明の加熱蒸散装置は、およそ60日間の長期にわたり安定した蒸散性能と優れた殺虫効力を示し、吸液芯の折れに対する危惧を格段に低減させた。なお、本発明2や本発明6のように、吸液芯と放熱筒体内壁の間隙が1.7mmを超えると蒸散の安定性が若干劣る傾向が認められるので、1.2〜1.7mmの範囲に設計するのが好ましい。
これに対し、比較例1の如く、中空筒状部分の体積が300mm3より小さいと初期の殺虫成分蒸散量が過大となって殺虫効力が持続せず、一方800mm3を超えた場合(比較例2)、殺虫成分を蒸散させるエネルギーが不足した。放熱筒体内壁の表面温度につき評価した場合(比較例3及び4)も同様で、120〜150℃の温度範囲をはずれると不適であった。
更に、本発明5及び6と比較例1の対比から、本発明で用いる一般式(I)のフッ素置換ベンジルアルコールエステル化合物においては、「中空筒状部分の体積」が蒸散性能を大きく左右し、一方、比較例5及び6の対比から、d−T80−フラメトリンについては「吸液芯受熱部の高さの放熱筒体内壁の高さに対する倍率」が「中空筒状部分の体積」よりも重要なファクターであることが認められた。従って、本発明は、実用新案登録公報第2554711号に記載の知見から容易に導き得ないものである。
なお、比較例7のように、薬液組成を変更して対応することも可能であるが、高沸点溶剤を配合する必要があること、また吸液芯の折れの問題が未解決であることから、本発明の目的に合致しない。
As a result of the test, the heat transpiration apparatus of the present invention showed stable transpiration performance and excellent insecticidal efficacy for a long period of about 60 days, and greatly reduced the fear of breakage of the absorbent core. In addition, since the tendency of the stability of transpiration is slightly inferior when the gap between the liquid absorption core and the wall of the heat radiating cylinder exceeds 1.7 mm as in the present invention 2 or the present invention 6, it is recognized that the stability of transpiration is slightly inferior. It is preferable to design in the range.
On the other hand, as in Comparative Example 1, when the volume of the hollow cylindrical portion is smaller than 300 mm 3 , the initial insecticidal component transpiration amount is excessive, and the insecticidal efficacy is not maintained, whereas when it exceeds 800 mm 3 (Comparative Example) 2) Insufficient energy to evaporate the insecticidal component. When the surface temperature of the wall of the heat radiating cylinder was evaluated (Comparative Examples 3 and 4), it was not suitable if the temperature range of 120 to 150 ° C. was deviated.
Further, from the comparison between the present invention 5 and 6 and Comparative Example 1, in the fluorine-substituted benzyl alcohol ester compound of the general formula (I) used in the present invention, the “volume of the hollow cylindrical portion” greatly affects the transpiration performance, On the other hand, in comparison with Comparative Examples 5 and 6, for d-T80-flamethrin, the “magnification ratio of the height of the liquid-absorbent core heat-receiving part to the height of the heat-dissipating cylinder wall” is more important than “volume of the hollow cylindrical part”. It was recognized that this was a significant factor. Therefore, the present invention cannot be easily derived from the knowledge described in Utility Model Registration Publication No. 2554711.
Although it is possible to change the chemical composition as in Comparative Example 7, it is necessary to add a high boiling point solvent, and the problem of breakage of the liquid absorbent core is unsolved. Does not meet the object of the present invention.

本発明の加熱蒸散装置は、新しい殺虫成分を活用し、優れた蒸散性能と殺虫効力を奏するとともに、吸液芯が折れにくい構成の加熱蒸散装置を提供するので、産業上の有用性は極めて高い。 The heat transpiration device of the present invention utilizes a new insecticidal component, provides an excellent transpiration performance and insecticidal effect, and provides a heat transpiration device having a structure in which the liquid absorption core is not easily broken, so that the industrial utility is extremely high. .

本発明の加熱蒸散装置の一実施例を示す。An example of the heat evaporation apparatus of the present invention is shown.

符号の説明Explanation of symbols

1.薬液容器
2.薬液
3.吸液芯
4.中栓
5.発熱体
6.放熱筒体内壁
7.開口部
8.蒸散筒
9.電源コード
10.オンオフ操作スイッチ
11.中空筒状部
1. Chemical solution container 2. Chemical solution Liquid absorption core 4. Inner plug 5. 5. Heating element 6. Wall of heat radiating cylinder Opening 8. Transpiration cylinder9. Power cord 10. 10. ON / OFF operation switch Hollow cylindrical part

Claims (4)

殺虫成分として、一般式(I)
Figure 2005095107
(式中、X及びYは同一又は相異なって水素原子、メチル基、ハロゲン原子又はトリフルオロメチル基を表し、Zは水素原子、メチル基又はメトキシメチル基を表す)で表されるフッ素置換ベンジルアルコールエステル化合物から選ばれた1種又は2種を含む薬液が収容された薬液容器、該薬液を吸液する吸液芯、及び該吸液芯を加熱して薬液を蒸散させる発熱体を備え、前記発熱体を構成する中空筒状の放熱筒体内壁の高さを8〜12mm、かつ表面部の温度を120〜150℃とし、しかもこの放熱筒体内壁に対向して位置する前記吸液芯の受熱部先端上方の中空筒状部分の体積が300mm3〜800mm3になるようにしたことを特徴とする加熱蒸散装置。
As an insecticidal component, the general formula (I)
Figure 2005095107
(Wherein X and Y are the same or different and represent a hydrogen atom, a methyl group, a halogen atom or a trifluoromethyl group, and Z represents a hydrogen atom, a methyl group or a methoxymethyl group) A chemical solution container containing a chemical solution containing one or two kinds selected from alcohol ester compounds, a liquid absorbent core for absorbing the chemical solution, and a heating element for heating the liquid absorbent core to evaporate the chemical solution, The liquid-absorbing core is positioned so as to have a height of 8 to 12 mm and a surface temperature of 120 to 150 ° C., and facing the wall of the heat radiating cylinder. heating transpiration apparatus volume of the hollow cylindrical portion of the heat receiving tip upper is characterized in that was set to 300mm 3 ~800mm 3.
薬液が、殺虫成分を0.2〜2.0重量%、100〜180℃の加熱温度で蒸散する界面活性剤を10〜80重量%、及び水を18〜88重量%含有する水性薬液であることを特徴とする請求項1に記載の加熱蒸散装置。 The chemical solution is an aqueous chemical solution containing 0.2 to 2.0% by weight of the insecticidal component, 10 to 80% by weight of a surfactant that evaporates at a heating temperature of 100 to 180 ° C., and 18 to 88% by weight of water. The heating and transpiration device according to claim 1. 薬液が、殺虫成分を0.2〜2.0重量%、及び沸点温度(95重量%留出温度)範囲が240〜300℃の灯油を97重量%以上含有する油性薬液であることを特徴とする請求項1に記載の加熱蒸散装置。 The chemical solution is an oily chemical solution containing 0.2 to 2.0% by weight of an insecticidal component and 97% by weight or more of kerosene having a boiling point temperature (95% by weight distillation temperature) range of 240 to 300 ° C. The heating transpiration apparatus according to claim 1. 吸液芯の受熱部と、発熱体の放熱筒体内壁との間隙が、1.2〜1.7mmであることを特徴とする請求項1ないし3のいずれかに記載の加熱蒸散装置。 The heating and transpiration apparatus according to any one of claims 1 to 3, wherein a gap between the heat receiving portion of the liquid absorption core and a wall of the heat radiating cylinder of the heating element is 1.2 to 1.7 mm.
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