JP4885371B2

JP4885371B2 - How to smoke smoke insecticides

Info

Publication number: JP4885371B2
Application number: JP2001147146A
Authority: JP
Inventors: 一輝小椋; 幸治中山; 純郎勝田
Original assignee: Dainihon Jochugiku Co Ltd
Current assignee: Dainihon Jochugiku Co Ltd
Priority date: 2001-05-17
Filing date: 2001-05-17
Publication date: 2012-02-29
Anticipated expiration: 2021-05-17
Also published as: JP2002338407A

Description

【０００１】
【産業上の利用分野】
本発明は、改良された燻煙殺虫剤の燻煙方法に関するものである。
【０００２】
【従来の技術】
室内に生息するゴキブリ、ナンキンムシ、シラミ、イエダニ、屋内塵性ダニ類などの害虫、ダニ類の駆除や防除のために燻煙剤が使用されてきた。燻煙剤は短時間高濃度空間処理剤に該当し、手間をかけずに広い空間を処理できる長所がある反面、効力、人体に対する安全性、火災に対する安全性など十分な配慮が要求される。現在市販されている燻煙剤には二つのタイプがあり、一つは可燃物と酸素遊離物質、例えば硝酸塩、クロム酸塩、過塩素酸塩などを含むもので、点火した位置から適宜の速度で燃焼し、その燃焼部にある揮散されるべき物質が空中に揮散するものである。他方は、殺虫成分と有機発泡剤、更に必要に応じて増量剤（有機物または無機物）を加えて調製したものであり、有機発泡剤の熱分解の際発生するガスの力を利用して殺虫成分を揮散させるものである。
一方、燻煙剤の内容物と関連して燻煙を開始させる発熱手段も多様化しており、従来のマッチによる点火方式の外、酸化カルシウムに水を加えて発熱させる方法も実用化されているが、燻煙が開始するまでに１分以上時間がかかるという問題を有している。
【０００３】
本発明者らは先に、特開平１１−９２３１２号公報において、ピレスロイド系殺虫成分およびカーバメート系殺虫成分から選ばれた１種又は２種を２〜１５重量％と、有機発泡剤としてのアゾジカルボンアミドを７０〜９７重量％と、酸化亜鉛及び炭酸亜鉛から選ばれた１種又は２種を１〜１５重量％含有する燻煙剤組成物を、緩燃焼性材料からなる点火具を接触させた時その接触させた部分に噴孔が形成される合成樹脂製フィルム袋に封入した燻煙殺虫剤、及びこれを用いた燻煙方法を開示した。
また、特開２０００−３２７５０３号公報では、上記緩燃焼性材料からなる点火具の替わりに、火薬類に属さない棒状発熱剤を発熱剤収納管に入れ、棒状発熱剤の先端部にマッチ頭薬等の発火薬を付着させた燻煙剤用点火具を提示し、着火性の改良を行った。
【０００４】
これらの燻煙殺虫剤、及び燻煙方法は、酸化亜鉛及び炭酸亜鉛がアゾジカルボンアミドの分解温度を下げ、簡便かつ効率よく殺虫成分を燻煙せしめるシステムを提供するものであったが、例えば、特開２０００−３２７５０３号公報の方法では、点火具の発熱エネルギーが不足して着火の不都合を招いたり、殺虫成分の揮散率が条件によっては７０％に至らない場合もあり、改良の余地が残されていた。
【０００５】
【発明が解決しようとする課題】
本発明は、簡便かつ燻煙の開始が確実で、しかも燻煙開始までの時間を使用者にとって最も適当な１０〜３０秒とし、更に殺虫成分の揮散率が常に７０％以上になるような燻煙殺虫剤の燻煙方法を提供することを目的とする。
【０００６】
【課題を解決するための手段、ならびに発明の実施の形態】
上記課題を解決するため、本発明者らは鋭意研究を重ねた結果、粉状の殺虫剤組成物が合成樹脂製フィルム袋に封入された燻煙殺虫剤袋を用い、加水発熱物質に給水して燻煙を開始せしめることにより、目的の燻煙システムを達成できることを知見し、本発明を完成した。
【０００７】
すなわち請求項１の発明は、合成樹脂製フィルム袋に、殺虫成分を４．８〜１５．２重量％と、有機発泡剤のアゾジカルボンアミドを８１．６〜９０．４重量％と、酸化亜鉛を２．０〜４．８重量％含有する粉状の殺虫剤組成物が封入された燻煙殺虫剤袋を、筒体の上部に該燻煙殺虫剤袋の収納のための凹部が形成されかつ筒体の内部空間が実質閉鎖されている燻煙筒体の前記凹部に収納し、次いで該燻煙筒体の内部空間に充填された加水発熱物質に給水することにより、燻煙を給水後１０〜３０秒以内に開始せしめ、しかも該燻煙を殺虫成分の揮散率が７０％以上の高水準に達するものとした燻煙殺虫剤の燻煙方法に係るものである。
【０００８】
本発明で用いる殺虫成分としては、ピレスロイド系殺虫成分、カーバメート系殺虫成分、有機リン系殺虫成分、あるいは、フルフェノクスロン、エトキサゾールやピリプロキシフェンで代表される昆虫成長阻害剤等があげられるが、好ましくはピレスロイド系殺虫成分及びカーバメート系殺虫成分から選ばれた１種又は２種が用いられる。ピレスロイド系殺虫成分としては、フェノトリン、ぺルメトリン、シフェノトリン、シペルメトリン、アレスリン、プラレトリン、フラメトリン、レスメトリン、エトフェンプロックス等があげられ、害虫に対して速効性でかつ人畜に対して安全性が高いので、家屋内に生息するゴキブリ、ナンキンムシ、シラミ、イエダニ、屋内塵性ダニ類の駆除または防除に好適である。なお、化学構造中に不斉炭素あるいは二重結合等を含みこれに基づく光学異性体や幾何異性体等が存在する場合は、これらの各々または任意の混合物も本発明に含まれることはもちろんである。特に好ましい化合物は、より残効性が期待されるフェノトリン、ぺルメトリン、シフェノトリン、シペルメトリンである。また、カーバメート系殺虫剤としては、メトキサジアゾン等があげられ、例えばピレスロイド抵抗性ゴキブリの駆除を目的とする場合は、この化合物を配合するのが好ましい。
【０００９】
前記殺虫成分は、殺虫剤組成物中に４．８〜１５．２重量％配合される。４．８重量％未満では所望の効果が得られないし、一方１５．２重量％を超えると有機発泡剤の噴出力に影響を及ぼすので好ましくない。
【００１０】
本発明では、前記殺虫成分のほかに、他のタイプの殺ダニ剤、カビ類、菌類などを対象とした防カビ剤、抗菌剤や殺菌剤、あるいはピレスロイド系殺虫剤の共力剤などを配合してもよい。殺ダニ剤としては、サリチル酸フェニル、３−ヨード−２−プロピニルブチルカーバメート等があり、一方、防カビ剤、抗菌剤や殺菌剤としては、２−メルカプトベンゾチアゾール、２−（４−チアゾリル）ベンツイミダゾール、トリホリン、３−メチル−４−イソプロピルフェノール、ｏ−フェニルフェノール等を例示できるが、これらに限定されるものではない。
【００１１】
有機発泡剤としては、アゾジカルボンアミドが使用され、殺虫剤組成物中に８１．６〜９０．４重量％配合される。熱分解により主として窒素ガスを発生するアゾジカルボンアミドは、ガス量が多く優れた発泡性能を示す一方、発泡剤固有の臭いが少ないので好ましい有機発泡剤である。８１．６重量％未満では発泡剤の噴出力が不足し、殺虫成分が十分拡散しない。一方、９０．４重量％を超えると他の成分、例えば殺虫成分が少なくなり所望の殺虫効果が得られない等の問題がある。
【００１２】
本発明で用いる殺虫剤組成物には、アゾジカルボンアミドの分解温度を下げ、燻煙効率を高めるために、補助剤として、酸化亜鉛が、全体量あたり２．０〜４．８重量％配合される。２．０重量％未満では補助剤としての効果が得られず、一方、４．８重量％を超えると、噴出力が強まるものの燻煙後の補助剤沈降による汚染が目立つようになり好ましくない。なお、燻煙性能に支障をきたさない限りにおいて、ステアリン酸亜鉛、オクチン酸亜鉛、ステアリン酸カルシウム、尿素、メラミン、グアニジン等の発泡補助剤を更に適宜添加してもよい。
【００１３】
前記殺虫剤組成物は、必要ならば更に安定剤、香料、賦形剤等を添加して、粉状に調製され、合成樹脂製フィルム袋に封入される。例えば、顆粒状や円柱状であると製造コストがかさむだけでなく、燻煙開始までの時間が遅れるので好ましくない。また、粉状であっても合成樹脂製フィルム袋に封入されていないと、燻煙開始までの時間が早くなりすぎたり、また内容物が容器外に飛散して汚染の原因となる。
かかる燻煙殺虫剤袋への内容物の封入量は、容器の大きさや処理する部屋の広さ等を考慮して決定される。
【００１４】
前記合成樹脂製フィルム袋の材質としては、ポリエチレン、ポリプロピレン、ナイロン、ポリエステル等が一般的に使用できるが、噴煙を効率よく持続せしめるべく検討した結果、厚さは２０〜５０ミクロン程度がよく、またポリエチレンと他の合成樹脂製フィルムとをラミネートしたもの、例えばポリエチレンラミネートセロハン、ポリエチレンラミネートポリプロピレン等が特に有効であった。
【００１５】
本発明の燻煙殺虫剤の燻煙方法は、上記構成に加え、発熱手段として、加水発熱物質に給水して燻煙を開始せしめる方法を組み合わせたことに特徴を有する。すなわち、例えば、火薬類に属さない棒状発熱剤の先端部にマッチ頭薬等の発火薬を付着させた燻煙剤用点火具に替えて、発熱エネルギーの大きい加水反応加熱、好ましくは酸化カルシウムを用いた反応を利用することによって、簡便かつ燻煙の開始が確実で、しかも燻煙開始までの時間を使用者にとって最も適当な１０〜３０秒とし、更に殺虫成分の揮散率を常に７０％以上にすることが可能となったものである。
【００１６】
燻煙殺虫剤袋は、燻煙筒体の上部に形成された凹部に収納される。該燻煙筒体の内部空間には加水発熱物質が充填されており、給水によって燻煙筒体の凹部を加熱し、更に燻煙殺虫剤袋を間接加熱して燻煙を開始せしめる。加水発熱物質は、燻煙筒体の凹部の周面や底面を全て取り巻くように充填してもよいし、燻煙性能に支障がない限り、製造性や経済性を考慮して底面部分のみに充填しても構わないが、当然のことながら前者の方式の方がより効率的な燻煙性能を提供する。
なお、燻煙筒体の凹部は、燻煙筒体を加工しそのまま１パーツで構成してもよいし、あるいは別途成形したものを装着して二重構造とすることもできる。燻煙筒体の材質としては、強固性と気密性が要求されるので、金属アルミニウム缶や二重プラスチック缶等が適している。
【００１７】
請求項２の発明は、請求項１の構成において、加水発熱物質として、酸化カルシウムを用いたものである。
【００１８】
かかる燻煙殺虫剤の燻煙方法によれば、処理が簡便かつ燻煙の開始が確実で、しかも燻煙開始までの時間を使用者にとって最も適当な１０〜３０秒とし、更に殺虫成分の揮散率を常に７０％以上とする燻煙システムが提供される。そして、家屋内に生息するゴキブリ、ナンキンムシ、シラミ、イエダニ、屋内塵性ダニ類に対してすぐれた駆除あるいは防除効果を奏するものである。
【００１９】
【実施例】
つぎに具体的実施例ならびに試験例に基づいて、本発明の燻煙殺虫剤の燻煙方法を更に詳細に説明する。また、図１は、本発明の一実施形態の参考断面図を示す。
【００２０】
実施例１．
フェノトリン１．０ｇ（全体量に対して８．３重量％）、メトキサジアゾン０．８ｇ（全体量に対して６．７重量％）、アゾジカルボンアミド９．８４ｇ（全体量に対して８２重量％）、及び酸化亜鉛０．３６ｇ（全体量に対して３．０重量％）を混合してなる粉状の殺虫剤組成物１２ｇを、ポリエチレンラミネートセロハンフィルム袋に封入して本発明で用いる燻煙殺虫剤袋（１）を調製した。これを、金属アルミニウム製の燻煙筒体（２：直径５．５ｃｍ、高さ８ｃｍ）の上部に形成された凹部（３：直径４ｃｍ、高さ５ｃｍ）に収納し、一方、燻煙筒体（２）の内部空間には、凹部（３）の周面や底面を全て取り巻くように、加水発熱物質である酸化カルシウム（４）を充填した。燻煙筒体（２）の底面には給水孔（５）が数個設けられており、使用前に酸化カルシウム（４）が吸湿して劣化するのを防止するため、これらの構成部材をアルミニウム製袋で密封した（図示せず）。
使用に際しては、まず閉め切った６畳の部屋の中央に所定量の水（６）を満たした外缶（７）を置いた。前記アルミニウム製袋を破袋して、燻煙殺虫剤袋（１）を含む燻煙筒体（２）を取り出し、外缶（７）に設置したところ、２０秒後に燻煙が確実に開始し、燻煙は約４分間継続した。その後の調査で、フェノトリン及びメトキサジアゾンの揮散率がそれぞれ、８０％、７７％であり、ゴキブリや屋内塵性ダニに対して高い防除効果を示すことが認められた。
【００２１】
実施例２．
ペルメトリン２．４ｇ（全体量に対して１０重量％）、３−ヨード−２−プロピニルブチルカーバメート１．２ｇ（全体量に対して５．０重量％）、アゾジカルボンアミド１９．４２ｇ（全体量に対して８０．９重量％）、炭酸亜鉛０．９６ｇ（全体量に対して４．０重量％）、及び香料０．０２ｇ（全体量に対して０．１重量％）を混合してなる粉状の殺虫剤組成物２４ｇを、ポリエチレン製フィルム袋に封入して本発明で用いる燻煙殺虫剤袋（１）を調製した。これを、実施例１と同様に、燻煙筒体（２）の凹部（３）に収納した。但し、酸化カルシウム（４）は凹部（３）の底面のみ加熱するように充填した。
閉め切った１５畳の部屋で実施例１と同様に燻煙処理を行ったところ、２６秒後に燻煙が開始し、燻煙は約６分間継続した。噴煙は部屋全体に拡散し、ペルメトリン及び３−ヨード−２−プロピニルブチルカーバメートの揮散率は、それぞれ、７３％、７４％であった。また、処理前後のゴキブリ、屋内塵性ダニ、及びカビ類の密度の推移を調べた結果、処理後においていずれの密度も著しく減少していることが認められた。
【００２２】
試験例１．
実施例１に準じて表１に示す合成樹脂製フィルム袋入りの各種燻煙殺虫剤袋（１２ｇ）を調製した。これを、実施例１に準じた燻煙筒体（直径５ｃｍ、高さ８ｃｍ）に収納し、種々の発熱手段を用いて下記の燻煙試験を行った。試験結果も併せて表１に示す。
▲１▼燻煙の開始時間；発熱手段が加水反応加熱の場合は給水後、また棒状発熱剤の先端部にマッチ頭薬等の発火薬を付着させた燻煙剤用点火具の場合は着火後、燻煙開始までの時間を測定した。
▲２▼殺虫成分の揮散率；噴煙を捕集し、これに含まれる殺虫成分量を分析して燻煙前初期量に対する揮散率を求めた。なお、表１中、「ａ」、「ｂ」とあるのは殺虫成分の項に示された殺虫成分の揮散率である。
▲３▼殺虫効力；空間の４隅に、ピレスロイド感受性チャバネゴキブリ、及びピレスロイド抵抗性チャバネゴキブリをそれぞれ１０匹ずつ含むシリンダーを置き、燻煙４８時間後に死虫率を調べた。なお、表１中、「感」は感受性ゴキブリを、そして「抵」は抵抗性ゴキブリを示す。
▲４▼総合判定；上記試験項目、ならびに燻煙時の状況、処理後の汚染状況等を斟酌して評価した。良好な場合を○、不良の場合を×で示し、特別な所見がある場合それを加えた。
【００２３】
【表１】

【００２４】
試験の結果、本発明の燻煙殺虫剤の燻煙方法によれば、処理が簡便かつ燻煙の開始が確実で、しかも燻煙開始までの時間が使用者にとって最も適当な１０〜３０秒であった。また、殺虫成分の揮散率、殺虫効力、使用性のいずれもすぐれ、極めて実用性の高いことが明らかとなった。
これに対し、比較例１〜４のように、殺虫剤組成物を円柱状（直径５ｍｍ、長さ１０ｍｍ）に成形した場合、酸化亜鉛の配合の有無や、フィルム袋への封入の有無にかかわらず、燻煙開始までの時間が遅れ、殺虫成分の揮散率も低下傾向にあった。また、粉状の殺虫剤組成物をフィルム袋に封入せずに加水反応加熱すると（比較例５）、燻煙の開始が早くなりすぎ、また内容物が容器外に飛散して汚染を生じるという問題があった。更に、粉状の殺虫剤組成物をフィルム袋に封入しても酸化亜鉛を所定量配合しない場合（比較例６〜７）、実施例に比べて燻煙開始までの時間が遅れ、殺虫成分の揮散率が幾分低かった。また、発熱手段として、棒状発熱剤の先端部にマッチ頭薬等の発火薬を付着させた燻煙剤用点火具を用いた場合（比較例８）、発熱エネルギーが低く、揮散率や着火の確実性の点で改良の余地があった。
以上の試験結果から、酸化亜鉛を含む粉状の殺虫剤組成物がフィルム袋に封入された燻煙殺虫剤袋を、加水反応加熱と組み合わせる本発明の燻煙方法が最もすぐれた燻煙システムを提供することが明らかである。
【００２５】
【発明の効果】
本発明の燻煙殺虫剤の燻煙方法によれば、簡便かつ燻煙の開始が確実で、しかも燻煙開始までの時間を使用者にとって最も適当な１０〜３０秒とし、更に殺虫成分の揮散率を常に７０％以上とする燻煙システムが提供される。そして、家屋内に生息するゴキブリ、ナンキンムシ、シラミ、イエダニ、屋内塵性ダニ類に対してすぐれた駆除あるいは防除効果を示し、極めて実用的である。
【図面の簡単な説明】
【図１】本発明の一実施形態の参考断面図を示す。
【符号の説明】
１．燻煙殺虫剤袋
２．燻煙筒体
３．凹部
４．加水発熱物質（酸化カルシウム）
５．給水孔
６．水
７．外缶[0001]
[Industrial application fields]
The present invention relates to an improved method for smoking a smoke insecticide.
[0002]
[Prior art]
Smoke agents have been used to control and control pests and mites, such as cockroaches, bedbugs, lice, house dust mites, and indoor dust mites that live indoors. Smoke is a high-concentration space treatment agent for a short period of time, and has the advantage of being able to treat a wide space without much effort, but requires sufficient consideration such as efficacy, safety for the human body, and fire safety. There are two types of smoke agents currently on the market, one containing combustibles and oxygen-releasing substances such as nitrates, chromates, perchlorates, etc. The substance to be volatilized in the burning part volatilizes in the air. The other is prepared by adding an insecticidal component and an organic foaming agent and, if necessary, an extender (organic or inorganic), and uses the power of the gas generated during the thermal decomposition of the organic foaming agent. Is volatilized.
On the other hand, the heat generating means for starting soot is diversified in relation to the contents of the soot agent, and in addition to the conventional ignition method by match, a method of generating heat by adding water to calcium oxide has been put into practical use. However, it has a problem that it takes more than 1 minute before smoke starts.
[0003]
The present inventors previously described in JP-A-11-92312, 2 to 15% by weight of one or two selected from pyrethroid insecticide components and carbamate insecticide components, and azodicarboxylic as an organic foaming agent. A smoke composition comprising 70 to 97% by weight of amide and 1 to 15% by weight of one or two selected from zinc oxide and zinc carbonate was brought into contact with an igniter made of a slowly combustible material. A smoke smoke insecticide enclosed in a synthetic resin film bag in which a nozzle hole is formed at the contacted portion, and a smoke method using the same are disclosed.
Further, in Japanese Patent Laid-Open No. 2000-327503, a rod-shaped exothermic material that does not belong to explosives is placed in a heat-generating agent storage tube instead of the above-mentioned igniter made of a slow-combustible material, The ignition device for smoke smoke agent to which such a pyrotechnic agent was attached was presented and the ignitability was improved.
[0004]
These smoke smoke insecticides and smoke smoke methods provide a system in which zinc oxide and zinc carbonate lower the decomposition temperature of azodicarbonamide and allow smoke components to be smoked easily and efficiently. In the method disclosed in Japanese Patent Laid-Open No. 2000-327503, there is a case where the exothermic energy of the igniter is insufficient, causing inconvenience of ignition, and the volatilization rate of the insecticidal component may not reach 70% depending on conditions, leaving room for improvement. It had been.
[0005]
[Problems to be solved by the invention]
The present invention is simple and reliable in the start of soot, and the time until the start of soot is 10 to 30 seconds, which is most appropriate for the user, and the volatilization rate of the insecticidal component is always 70% or more. An object is to provide a method for smoking smoke insecticides.
[0006]
Means for Solving the Problem, and Embodiment of the Invention
In order to solve the above-mentioned problems, the present inventors have conducted intensive research, and as a result, used a smoke insecticide bag in which a powdery insecticide composition is enclosed in a synthetic resin film bag, and watered the hydropyrogenic substance. Thus, the inventors have found that the intended smoke system can be achieved by initiating smoke, and the present invention has been completed.
[0007]
That first aspect of the present invention, the synthetic resin film bag, and 4.8 to 15.2% by weight of insecticidal components, and azodicarbonamide organic blowing agents from 81.6 to 90.4 wt%, oxide nitrous A smoke insecticide bag containing a powdery insecticide composition containing 2.0 to 4.8 % by weight of lead is formed, and a recess is formed in the upper part of the cylinder for storing the smoke insecticide bag. The soot is stored in the recess of the soot cylinder which is substantially closed, and then is supplied to the hydrothermal substance filled in the soot cylinder after the soot is supplied. The present invention relates to a method for smoking a pesticide that starts within ˜30 seconds, and that makes the smoke reach a high level of 70% or more.
[0008]
Examples of the insecticidal component used in the present invention include pyrethroid insecticidal components, carbamate insecticidal components, organophosphorus insecticidal components, or insect growth inhibitors represented by flufenoxuron, etoxazole and pyriproxyfen, etc. Preferably, one or two selected from pyrethroid insecticide components and carbamate insecticide components are used. Examples of pyrethroid insecticides include phenothrin, permethrin, ciphenothrin, cypermethrin, allethrin, praretrin, framethrin, resmethrin, etofenprox, etc., which are fast-acting against pests and highly safe for human animals. Therefore, it is suitable for controlling or controlling cockroaches, bedbugs, lice, house dust mites, and indoor dust mites living in the house. In the case where an optical isomer or a geometric isomer based on an asymmetric carbon or a double bond is included in the chemical structure, it goes without saying that each or any mixture thereof is also included in the present invention. is there. Particularly preferred compounds are phenothrin, permethrin, cyphenothrin, and cypermethrin, which are expected to have more residual effect. Further, examples of the carbamate insecticide include methoxadiazone and the like. For example, in the case of controlling a pyrethroid resistant cockroach, it is preferable to add this compound.
[0009]
The insecticidal component is blended in an amount of 4.8 to 15.2 % by weight in the insecticide composition. If it is less than 4.8 wt% do not obtain the desired effect, whereas undesirable influence on the ejection force of more than 15.2% by weight organic blowing agent.
[0010]
In the present invention, in addition to the insecticidal component, other types of acaricides, molds, fungicides for fungi, etc., antibacterial agents and fungicides, or synergists for pyrethroid insecticides, etc. May be. Examples of acaricides include phenyl salicylate and 3-iodo-2-propynyl butyl carbamate. On the other hand, anti-fungal agents, antibacterial agents and fungicides include 2-mercaptobenzothiazole and 2- (4-thiazolyl) benz. Examples thereof include, but are not limited to, imidazole, triphorin, 3-methyl-4-isopropylphenol, o-phenylphenol, and the like.
[0011]
As the organic foaming agent, azodicarbonamide is used, and 81.6 to 90.4 % by weight is blended in the insecticide composition. Azodicarbonamide, which mainly generates nitrogen gas by pyrolysis, is a preferred organic foaming agent because it has a large amount of gas and exhibits excellent foaming performance, while it has a small odor inherent to the foaming agent. If it is less than 81.6 % by weight, the blowing power of the foaming agent is insufficient, and the insecticidal component does not diffuse sufficiently. On the other hand, when it exceeds 90.4 % by weight, there are problems that other components, for example, insecticidal components are reduced and a desired insecticidal effect cannot be obtained.
[0012]
Insecticide composition used in the present invention lowers the decomposition temperature of azodicarbonamide, in order to increase the smoke efficiency, as auxiliary agents, oxidizing zinc is the total amount per 2.0 to 4.8 wt% blending Is done. If the amount is less than 2.0 % by weight, the effect as an auxiliary agent cannot be obtained. On the other hand, if the amount exceeds 4.8 % by weight, although the jet power is increased, the contamination due to the auxiliary agent settling after the smoke becomes noticeable. In addition, as long as the smoke performance is not hindered, a foaming aid such as zinc stearate, zinc octinate, calcium stearate, urea, melamine, and guanidine may be added as appropriate.
[0013]
If necessary, the insecticide composition is further added with stabilizers, fragrances, excipients and the like, prepared in powder form, and enclosed in a synthetic resin film bag. For example, a granule or columnar shape is not preferable because it not only increases the manufacturing cost but also delays the time until the start of smoke. Further, even if it is powdery, if it is not enclosed in a synthetic resin film bag, the time until the start of soot will be too early, or the contents will be scattered outside the container, causing contamination.
The amount of the contents contained in the soot and pesticide bag is determined in consideration of the size of the container and the size of the room to be processed.
[0014]
As the material of the synthetic resin film bag, polyethylene, polypropylene, nylon, polyester, etc. can be generally used, but as a result of studying to sustain the fumes efficiently, the thickness should be about 20 to 50 microns, Those obtained by laminating polyethylene and other synthetic resin films, such as polyethylene laminated cellophane, polyethylene laminated polypropylene, etc., were particularly effective.
[0015]
The smoke smoke insecticide method of the present invention is characterized in that, in addition to the above-described structure, a method of supplying smoke to a hydrothermal substance and starting smoke is combined as a heat generating means. That is, for example, instead of a smoke agent igniter in which a pyrotechnic agent such as a match head is attached to the tip of a rod-like exothermic agent that does not belong to explosives, hydrothermal reaction heating with high exothermic energy, preferably calcium oxide is used. By using the reaction used, the start of soot is easy and reliable, and the time until the start of soot is 10 to 30 seconds, which is most appropriate for the user, and the volatilization rate of the insecticidal component is always 70% or more. It is possible to make it.
[0016]
The smoke smoke insecticide bag is accommodated in a recess formed in the upper part of the smoke smoke cylinder. The interior space of the soot tube body is filled with a hydrothermal exothermic substance, and the recess of the soot tube body is heated by water supply, and the soot insecticide bag is indirectly heated to start soot. The hydropyrogenic material may be filled so as to surround all of the peripheral surface and bottom surface of the recess of the soot cylinder, and as long as there is no hindrance to the soot performance, only the bottom surface is filled in consideration of manufacturability and economy. Of course, the former method naturally provides more efficient smoke performance.
The concave portion of the soot cylinder may be formed as a single part by processing the soot cylinder, or may be formed as a double structure by attaching a separately molded one. As the material of the smoke cylinder, it is required to be strong and airtight, so a metal aluminum can, a double plastic can and the like are suitable.
[0017]
According to a second aspect of the present invention, in the configuration of the first aspect, calcium oxide is used as the hydrothermal substance.
[0018]
According to such a method for smoking a pesticide, the treatment is simple and the start of smoking is sure and the time until the start of smoking is 10 to 30 seconds, which is most appropriate for the user, and further, the volatilization of the insecticide component A soot system with a rate always above 70% is provided. In addition, it exhibits excellent control or control effects on cockroaches, bedbugs, lice, house dust mites, and house dust mites living in the house.
[0019]
【Example】
Next, the method for smoking the smoke insecticide of the present invention will be described in more detail based on specific examples and test examples. FIG. 1 shows a reference cross-sectional view of one embodiment of the present invention.
[0020]
Example 1.
1.0 g of phenothrin (8.3 wt% based on the total amount), 0.8 g of methoxadiazone (6.7 wt% based on the total amount), 9.84 g of azodicarbonamide (82 wt% based on the total amount) And 12 g of a powdery insecticide composition obtained by mixing 0.36 g of zinc oxide (3.0% by weight with respect to the total amount) in a polyethylene laminated cellophane film bag and used in the present invention A drug bag (1) was prepared. This is housed in a recess (3: diameter 4 cm, height 5 cm) formed in the upper part of a metal aluminum smoke cylinder (2: diameter 5.5 cm, height 8 cm). ) Was filled with calcium oxide (4), which is a hydrothermal exothermic substance, so as to surround the entire peripheral surface and bottom surface of the recess (3). There are several water supply holes (5) on the bottom surface of the smoke cylinder (2), and these components are made of aluminum in order to prevent the calcium oxide (4) from absorbing and deteriorating before use. Sealed with a bag (not shown).
In use, an outer can (7) filled with a predetermined amount of water (6) was first placed in the center of a closed 6 tatami room. After breaking the aluminum bag, taking out the soot cylinder (2) including the soot insecticide bag (1) and placing it in the outer can (7), soot smoke surely started after 20 seconds, Smoke continued for about 4 minutes. Subsequent investigation showed that the volatilization rates of phenothrin and methoxadiazone were 80% and 77%, respectively, indicating a high control effect against cockroaches and indoor dust mites.
[0021]
Example 2
2.4 g of permethrin (10% by weight with respect to the total amount), 1.2 g of 3-iodo-2-propynylbutylcarbamate (5.0% by weight with respect to the total amount), 19.42 g of azodicarbonamide (in total amount) 80.9 wt%), 0.96 g of zinc carbonate (4.0 wt% with respect to the total amount), and 0.02 g of fragrance (0.1 wt% with respect to the total amount) 24 g of the insecticide composition in the form of a powder was enclosed in a polyethylene film bag to prepare a smoke insecticide bag (1) used in the present invention. This was housed in the recess (3) of the smoke cylinder (2) in the same manner as in Example 1. However, calcium oxide (4) was filled so as to heat only the bottom surface of the recess (3).
Smoke treatment was performed in the closed 15 tatami room in the same manner as in Example 1. After 26 seconds, soot started and smoke continued for about 6 minutes. The plume diffused throughout the room, and the volatilization rates of permethrin and 3-iodo-2-propynylbutylcarbamate were 73% and 74%, respectively. Moreover, as a result of examining the transition of the density of cockroaches, indoor dust mites, and molds before and after the treatment, it was found that the density was significantly reduced after the treatment.
[0022]
Test Example 1
According to Example 1, various types of smoke insecticide bags (12 g) containing synthetic resin film bags shown in Table 1 were prepared. This was stored in a smoke cylinder (diameter 5 cm, height 8 cm) according to Example 1, and the following smoke test was performed using various heat generating means. The test results are also shown in Table 1.
(1) Smoke start time: after water supply when the heating means is hydrolytic reaction heating, and when it is a smoke agent igniter with a pyrotechnic agent such as a match powder attached to the tip of the rod-shaped exothermic agent Thereafter, the time until the start of smoking was measured.
{Circle around (2)} Volatilization rate of insecticidal components: Volcanic smoke was collected and the amount of insecticidal components contained therein was analyzed to determine the volatilization rate relative to the initial amount before smoke. In Table 1, “a” and “b” indicate the volatilization rate of the insecticidal component shown in the section of the insecticidal component.
(3) Insecticidal efficacy: Cylinders containing 10 each of pyrethroid-sensitive German cockroaches and four pyrethroid-resistant German cockroaches were placed at the four corners of the space, and the mortality was examined 48 hours after smoking. In Table 1, “feel” indicates sensitive cockroaches, and “resistance” indicates resistant cockroaches.
(4) Comprehensive judgment: Evaluation was made taking into account the above test items, the situation at the time of smoking, the pollution situation after treatment, and the like. The case where it is good is indicated by ○, the case where it is bad is indicated by ×, and when there is a special finding, it is added.
[0023]
[Table 1]

[0024]
As a result of the test, according to the soot insecticide soot method of the present invention, the treatment is simple, the start of soot is sure, and the time until the start of soot is 10 to 30 seconds, which is most appropriate for the user. there were. In addition, the volatilization rate, insecticidal efficacy, and usability of the insecticidal component were all excellent, and it was revealed that it was extremely practical.
On the other hand, as in Comparative Examples 1 to 4, when the insecticide composition was molded into a cylindrical shape (diameter 5 mm, length 10 mm), whether or not zinc oxide was blended and whether or not it was enclosed in a film bag. In addition, the time until the start of smoking was delayed, and the volatilization rate of the insecticidal component tended to decrease. In addition, if the powdered insecticide composition is heated by a hydrolytic reaction without being enclosed in a film bag (Comparative Example 5), the start of soot is too early, and the contents are scattered outside the container to cause contamination. There was a problem. Furthermore, when a predetermined amount of zinc oxide is not blended even if the powdered insecticide composition is sealed in a film bag (Comparative Examples 6 to 7), the time until the start of soot is delayed compared to the Examples, The volatilization rate was somewhat low. In addition, when a smoke agent igniter in which a pyrophoric agent such as a match powder is attached to the tip of the rod-shaped exothermic agent as a heating means (Comparative Example 8), the exothermic energy is low, and the volatilization rate or ignition There was room for improvement in terms of certainty.
From the above test results, the soot system in which the soot method of the present invention combining the soot pesticide bag in which the powdered insecticide composition containing zinc oxide is enclosed in the film bag with the hydrolytic heating is the best. It is clear to provide.
[0025]
【Effect of the invention】
According to the smoking method of the smoking insecticide of the present invention, the start of smoking is simple and reliable, and the time until the start of smoking is set to 10 to 30 seconds, which is most suitable for the user, and further the volatilization of the insecticidal component. A soot system with a rate always above 70% is provided. It exhibits excellent control or control effects on cockroaches, bedbugs, lice, house dust mites, and house dust mites living in the house, and is extremely practical.
[Brief description of the drawings]
FIG. 1 shows a reference cross-sectional view of an embodiment of the present invention.
[Explanation of symbols]
1. Smoke insecticide bag 2.燻 smoke cylinder 3. Recess 4. Hydropyrogenic substance (calcium oxide)
5. Water supply hole 6. Water 7 Outer can

Claims

The synthetic resin film bag, and 4.8 to 15.2% by weight of insecticidal components, and azodicarbonamide organic blowing agents from 81.6 to 90.4 wt%, the oxide zinc from 2.0 to 4. A smoke insecticide bag containing 8 % by weight of a powdered insecticide composition is formed, and a recess for storing the smoke insecticide bag is formed at the top of the cylinder, and the internal space of the cylinder is The soot smoke is started within 10 to 30 seconds after the water supply by storing in the recess of the smoke smoke cylinder which is substantially closed, and then supplying water to the hydrothermal exothermic material filled in the internal space of the smoke smoke cylinder, Moreover, the smoke smoke insecticide smoke method is characterized in that the smoke emission rate of the insecticide component reaches a high level of 70% or more.

The method of smoking a smoke insecticide according to claim 1, wherein the hydropyrogenic substance is calcium oxide.