JP4688300B2 - Pest attractant poison bait - Google Patents
Pest attractant poison bait Download PDFInfo
- Publication number
- JP4688300B2 JP4688300B2 JP2001011731A JP2001011731A JP4688300B2 JP 4688300 B2 JP4688300 B2 JP 4688300B2 JP 2001011731 A JP2001011731 A JP 2001011731A JP 2001011731 A JP2001011731 A JP 2001011731A JP 4688300 B2 JP4688300 B2 JP 4688300B2
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- JP
- Japan
- Prior art keywords
- pest
- attracting
- bait
- poison bait
- fipronil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Agricultural Chemicals And Associated Chemicals (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、害虫誘引性毒餌剤に関する。
【0002】
【従来の技術】
5−アミノ−1−[2,6−ジクロロ−4−(トリフルオロメチル)フェニル]−4−[(トリフルオロメチル)スルフィニル]−1H−ピラゾール−3−カルボニトリル(一般名:フィプロニル)は、常温で固体のフェニルピラゾール系殺虫有効成分であって、その物性としては、水に難溶であり、エタノール、アセトン、トルエン、キシレンなどの溶剤には易溶である。
【0003】
上記フェニルピラゾール系の殺虫有効成分で駆除対象となる害虫としては、ウンカ、メイガ、ゾウムシなどの農業害虫、ゴキブリ、シロアリ、クロアリ、ハエなどの住環境害虫などが挙げられる。
【0004】
また、フィプロニルは、劇物に指定されているものであるから、製剤の工程で空気中に微粉末が飛散しないように、いわゆる「粉立たないように」取り扱う必要があり、溶剤に溶解して均一に混合して製剤することが適当である。
【0005】
【発明が解決しようとする課題】
しかし、フィプロニルで誘引毒餌剤を製剤する場合において、餌の誘引性を阻害せず、製剤中に殺虫成分が均一分散する溶剤が発見されていなかった。
【0006】
すなわち、製剤に用いられる周知の溶剤の具体例として、トルエンや溶剤灯油は害虫への忌避性があり、揮発性のアセトンやエタノールはこれらの溶剤が揮発した後にフィプロニルが再結晶化して、製剤中で不均一になるという問題点がある。
【0007】
また、毒餌剤としての誘引性能を損なうことの無いコーン油等の植物油を溶剤とした場合は、このもののフィプロニルに対する溶解度が低いので、製剤中の溶解液量が多くなり、製剤の形態に制限が生じるという問題点がある。
【0008】
そこで、この発明の課題は、上記した問題点を解決して、フィプロニルで誘引毒餌剤を製剤する場合に、その溶剤が誘引成分である餌(賦形剤を兼ねる場合がある。)の誘引性能を損なわず、しかも充分に殺虫性を発揮する害虫誘引毒餌剤とすることである。
【0009】
【課題を解決するための手段】
上記の課題を解決するために、この発明では、害虫の餌を誘引成分とし、5−アミノ−1−[2,6−ジクロロ−4−(トリフルオロメチル)フェニル]−4−[(トリフルオロメチル)スルフィニル]−1H−ピラゾール−3−カルボニトリル(一般名:フィプロニル)を殺虫有効成分とし、この殺虫有効成分をポリエチレングリコールに溶解してなる害虫誘引性毒餌剤としたのである。
【0010】
上記した成分で構成されるこの発明の害虫誘引性毒餌剤は、ポリエチレングリコールに、駆除対象害虫であるゴキブリ類、アリ類、ハエ類などの住環境害虫ならびにウンカ、メイガ、ゾウムシなどの農業害虫からの忌避作用がなく、またフィプロニルの有効濃度が比較的低いので、溶解度の点でも問題がなく、種々の剤形に製剤できるものになる。
【0011】
また、ポリエチレングリコールとフィプロニルが均一分散し、混ざり合った状態において、害虫忌避作用がなく、害虫の餌の誘引性が損なわれず、殺虫成分による殺虫効果が添加効率よく奏されるものになる。
【0012】
【発明の実施の形態】
この発明の害虫誘引性毒餌剤を用いる駆除対象害虫は、ウンカ、メイガ、ゾウムシなどの農業害虫、ゴキブリ、シロアリ、クロアリ、ハエなどの住環境害虫などが挙げられる。
【0013】
製剤中の誘引成分となる上記の害虫の餌は、駆除対象害虫が可食性の物質であればよく、いわゆる誘引剤、賦形剤または結合剤といった機能性の面から分類または呼称される周知の物質を含んでいてもよい。
【0014】
すなわち、この発明に係る害虫の餌は、例えば砂糖などの糖類、トウモロコシ、小麦、大麦などの穀物および穀物粉、澱粉、セルロースなどの植物質、フィッシュミール、鰹節、骨粉、乾燥肉粉、その他の駆除対象の害虫に可食性の認められる周知の有機物質である。
【0015】
また、この発明で用いる5−アミノ−1−[2,6−ジクロロ−4−(トリフルオロメチル)フェニル]−4−[(トリフルオロメチル)スルフィニル]−1H−ピラゾール−3−カルボニトリル(一般名:フィプロニル)は、市販されている入手可能な農薬であり、CAS No.は、120068−37−3である。
【0016】
このようなフィプロニルは、害虫に対する殺虫活性が高く、前記した駆除対象害虫に対する通常の使用濃度は、1〜500ppm程度であって、この濃度は有機リンやカーバメート系殺虫有効成分に比べて低濃度であるから、製剤中に少量を均一に混合すれば容易に所要有効濃度に調整できるものである。
【0017】
ポリエチレングリコールは、重合条件によって分子量200〜10000以上のものがあり、分子量100〜400では液体、400〜600では半固体、600〜1000では白色軟質ワックス状、3000〜では乳白色ロウ状固体を呈する。しかし、いずれもエーテル基の親水性のために水溶性であり、芳香族炭化水素を多く含む有機溶剤に可溶であるが脂肪族炭化水素には不溶である。
【0018】
このようなポリエチレングリコールにフィプロニルを溶解して製剤を行なうには、目的とする製剤形態に応じてポリエチレングリコールの性状(分子量)を選択し、1〜500ppm程度の有効成分となるように攪拌器などで混合(または混練)する。
【0019】
【実施例および比較例】
〔実施例1、比較例1、2、3〕
表1に示す組成(重量部)となるように、フィプロニルと、溶剤を混合して溶解し、さらに砂糖、澱粉およびカルボキシセルロースナトリウム(以下、CMC−Naと略記する。)を添加して均一に混合し、最後に水7重量部を添加して混練し、固形で粒状(3g/粒)の誘引性毒餌剤を得た。
【0020】
なお、比較例2では、水7重量部を添加して混練した後にエタノールを揮発させ、固形で粒状(3g/粒)の誘引性毒餌剤を得た。
【0021】
また、比較例3は、水7重量部を添加して混練したところ、軟らかく固形でなくなり、ゲル剤としての使用できる可能性を調べたが、「垂れ」が生じて使用に耐えるものが得られなかった。
【0022】
【表1】
【0023】
得られた誘引性毒餌剤(実施例1、比較例1,2)に対する殺虫試験を以下の方法にて実施し、その結果を表2中に示した。
【0024】
[殺虫試験]
チャバネゴキブリ50匹を放った試験容器の中央に粒状(3g/粒)の誘引性毒餌剤を設置し、さらに砂糖40重量部、澱粉58重量部、CMC−Na2重量部、水7重量部を混練し、実施例と同様にして製剤した無毒の誘引性粒剤、および水を入れた開放容器を並置し、誘引性毒餌剤と無毒の誘引性粒剤をゴキブリが選択して摂食行動できるように設定し、所定の経過時間(3時間、5時間、7時間、24時間)後の致死虫数を計数した。
【0025】
【表2】
【0026】
表2の結果からも明らかなように、比較例1は、試験時間が24時間経過した後も致死率が13%と低く、誘引性が不良であると考えられた。また、比較例2も比較例1よりは致死率は高いが、24時間経過した後も致死率が62%であり誘引性は不充分であると考えられた。
【0027】
一方、全ての条件を満足する実施例1は、5時間後に既に致死率が77%であり、24時間経過した後では致死率が100%という優れた誘引性のあることが確認された。
【0028】
【発明の効果】
この発明は、以上説明したように、害虫の餌を誘引成分とし、所定の農薬であるフィプロニルをポリエチレングリコールに溶解した害虫誘引性毒餌剤としたので、製剤する場合に、殺虫成分の溶剤が誘引成分である餌(賦形剤を兼ねる場合がある。)の誘引性能を損なわず、しかも充分に殺虫性を発揮する害虫誘引毒餌剤になるという利点がある。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pest attracting poison bait.
[0002]
[Prior art]
5-amino-1- [2,6-dichloro-4- (trifluoromethyl) phenyl] -4-[(trifluoromethyl) sulfinyl] -1H-pyrazole-3-carbonitrile (generic name: fipronil) is It is a phenylpyrazole insecticidal active ingredient that is solid at room temperature, and its physical properties are hardly soluble in water and easily soluble in solvents such as ethanol, acetone, toluene, and xylene.
[0003]
Examples of the pests to be controlled with the above-mentioned phenylpyrazole-based insecticidal active ingredients include agricultural pests such as planthoppers, moths, and weevil, and living environment pests such as cockroaches, termites, black ants, and flies.
[0004]
In addition, since fipronil is designated as a deleterious substance, it must be handled in a so-called “do not form” state so that fine powder does not scatter in the air during the preparation process. It is appropriate to mix the preparations uniformly.
[0005]
[Problems to be solved by the invention]
However, when formulating attractant baits with fipronil, no solvent has been found that does not inhibit the attractiveness of the bait and in which the insecticidal components are uniformly dispersed in the formulation.
[0006]
That is, as specific examples of well-known solvents used in formulations, toluene and solvent kerosene are repellent to pests, and volatile acetone and ethanol are recrystallized after fipronil is volatilized after these solvents are volatilized. There is a problem of non-uniformity.
[0007]
In addition, when vegetable oil such as corn oil that does not impair the attracting performance as a poison bait is used as a solvent, the solubility of this in fipronil is low, so the amount of solution in the preparation increases and the form of the preparation is limited. There is a problem that it occurs.
[0008]
Then, the subject of this invention solves the above-mentioned problem, and when the attraction poison bait is formulated with fipronil, the attraction performance of the bait whose solvent is the attraction component (which may also serve as an excipient). It is to make a pest-attracting bait that does not impair the insecticide and exhibits sufficient insecticidal properties.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, pest bait is used as an attracting component, and 5-amino-1- [2,6-dichloro-4- (trifluoromethyl) phenyl] -4-[(trifluoro) Methyl) sulfinyl] -1H-pyrazole-3-carbonitrile (generic name: fipronil) was used as an insecticidal active ingredient, and this insecticidal active ingredient was dissolved in polyethylene glycol as a pest attracting poison bait.
[0010]
The insect pest attracting poison bait of the present invention composed of the above-mentioned components includes polyethylene glycol, pests to be controlled such as cockroaches, ants, and fly insects, and agricultural pests such as planthopper, moth, and weevil. Since the effective concentration of fipronil is relatively low, there is no problem in terms of solubility, and it can be formulated into various dosage forms.
[0011]
Moreover, in the state where polyethylene glycol and fipronil are uniformly dispersed and mixed, there is no pest repellent action, the attractiveness of the pest food is not impaired, and the insecticidal effect by the insecticidal component is efficiently exhibited.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Examples of pests to be controlled using the pest-attracting poison bait of the present invention include agricultural pests such as planthoppers, moths, and weevil, and living environment pests such as cockroaches, termites, black ants, and flies.
[0013]
The above-mentioned pest bait serving as an attracting component in the preparation may be any edible substance as long as the target pest is an edible substance, and is a well-known type classified or referred to in terms of functionality such as so-called attractant, excipient or binder. It may contain a substance.
[0014]
That is, pest foods according to the present invention include, for example, sugars such as sugar, cereals such as corn, wheat, barley, and grain flour, starch, cellulose and other plant matter, fish meal, bonito, bone meal, dried meat meal, and other exterminations. It is a well-known organic substance that is edible for the target pests.
[0015]
Further, 5-amino-1- [2,6-dichloro-4- (trifluoromethyl) phenyl] -4-[(trifluoromethyl) sulfinyl] -1H-pyrazole-3-carbonitrile (general) used in the present invention Name: fipronil) is a commercially available pesticide and CAS No. is 120068-37-3.
[0016]
Such fipronil, high insecticidal activity against pests, normal use concentration for combating target pests mentioned above is an approximately 1 to 500 p pm, this concentration lower than the organic phosphorus and carbamate insecticides active ingredient Since it is a concentration, it can be easily adjusted to the required effective concentration by mixing a small amount uniformly in the preparation.
[0017]
Polyethylene glycol has a molecular weight of 200 to 10000 or more depending on the polymerization conditions, and is a liquid with a molecular weight of 100 to 400, a semi-solid with 400 to 600, a white soft wax with 600 to 1000, and a milky white waxy solid with 3000. However, all of them are water-soluble due to the hydrophilicity of the ether group, and are soluble in organic solvents containing a large amount of aromatic hydrocarbons but insoluble in aliphatic hydrocarbons.
[0018]
Thus do formulated by dissolving the fipronil in a polyethylene glycol, and select the properties of polyethylene glycol (molecular weight) of the dosage form of the composition of interest, stirring so that 1 to 500 p pm approximately of active ingredient Mix (or knead) in a container.
[0019]
Examples and Comparative Examples
[Example 1, Comparative Examples 1, 2, 3]
Fipronil and a solvent are mixed and dissolved so that the composition (parts by weight) shown in Table 1 is obtained, and sugar, starch, and sodium carboxycellulose (hereinafter abbreviated as CMC-Na) are added uniformly. Finally, 7 parts by weight of water was added and kneaded to obtain a solid and granular (3 g / grain) attracting poison bait.
[0020]
In Comparative Example 2, 7 parts by weight of water was added and kneaded, and then ethanol was volatilized to obtain an attractive poisonous bait that was solid and granular (3 g / grain).
[0021]
In Comparative Example 3, when 7 parts by weight of water was added and kneaded, it was soft and not solid, and the possibility of being used as a gel was investigated. There wasn't.
[0022]
[Table 1]
[0023]
The insecticidal test for the obtained attractive poison bait (Example 1, Comparative Examples 1 and 2) was carried out by the following method, and the results are shown in Table 2.
[0024]
[Insecticide test]
A granular (3 g / grain) attracting poison bait is placed in the center of a test vessel that released 50 German cockroaches, and 40 parts by weight of sugar, 58 parts by weight of starch, 2 parts by weight of CMC-Na, and 7 parts by weight of water are kneaded. The nontoxic attractant granules formulated in the same manner as in the examples and an open container containing water are juxtaposed so that cockroaches can select and feed the attracting poison baits and nontoxic attracting granules. The number of dead insects after a predetermined elapsed time (3 hours, 5 hours, 7 hours, 24 hours) was counted.
[0025]
[Table 2]
[0026]
As is clear from the results in Table 2, it was considered that Comparative Example 1 had a low lethality of 13% even after the lapse of 24 hours, and the attractiveness was poor. Moreover, although the mortality rate of Comparative Example 2 was higher than that of Comparative Example 1, the mortality rate was 62% even after 24 hours, and the attractiveness was considered to be insufficient.
[0027]
On the other hand, it was confirmed that Example 1, which satisfies all the conditions, had an excellent attractiveness with a lethality of 77% after 5 hours and a fatality of 100% after 24 hours.
[0028]
【The invention's effect】
As described above, the present invention uses a pest bait as an attracting ingredient, and a pest-attracting poison bait prepared by dissolving fipronil, which is a predetermined agricultural chemical, in polyethylene glycol. There is an advantage that it becomes a pest-attracting bait that does not impair the attracting performance of the ingredient bait (which may also serve as an excipient) and that exhibits sufficient insecticidal properties.
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JP2001011731A JP4688300B2 (en) | 2001-01-19 | 2001-01-19 | Pest attractant poison bait |
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JP2001011731A JP4688300B2 (en) | 2001-01-19 | 2001-01-19 | Pest attractant poison bait |
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JP4688300B2 true JP4688300B2 (en) | 2011-05-25 |
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1315384C (en) * | 2005-05-16 | 2007-05-16 | 广东省昆虫研究所 | Chemical and method for killing red ant |
CN1317950C (en) * | 2005-11-01 | 2007-05-30 | 黄求应 | Environmental protection type attractant for killing termites |
WO2010127019A1 (en) * | 2009-04-28 | 2010-11-04 | Basf Corporation | Pesticide compositions and applicators |
CN102499271A (en) * | 2011-11-10 | 2012-06-20 | 北海市白蚁防治所 | Traditional Chinese-western medicine composition for killing termites |
CN103070203B (en) * | 2013-01-05 | 2015-02-04 | 南宁市房产管理局白蚁防治所 | Bait formulation for microtermes dimorphes Tsai et Chen |
WO2016159214A1 (en) * | 2015-04-01 | 2016-10-06 | 協友アグリ株式会社 | Combination of harmful-arthropod attracting compound and harmful-arthropod repelling compound |
JP2018002596A (en) * | 2016-06-27 | 2018-01-11 | 住化エンバイロメンタルサイエンス株式会社 | Bait agent and attracting insecticidal method |
CN109497096A (en) * | 2018-11-29 | 2019-03-22 | 淳安县蚕桑管理总站 | A kind of application method of diaphania insecticide |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09202703A (en) * | 1995-11-20 | 1997-08-05 | Yuukou Yakuhin Kogyo Kk | Insect pest exterminating agent and insect pest exterminating apparatus |
JP2000189031A (en) * | 1998-12-25 | 2000-07-11 | Yuukou Yakuhin Kogyo Kk | Agent for controlling termite |
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2001
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09202703A (en) * | 1995-11-20 | 1997-08-05 | Yuukou Yakuhin Kogyo Kk | Insect pest exterminating agent and insect pest exterminating apparatus |
JP2000189031A (en) * | 1998-12-25 | 2000-07-11 | Yuukou Yakuhin Kogyo Kk | Agent for controlling termite |
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