JP2020520355A - 農薬配合物中の溶媒としてのラクトン - Google Patents
農薬配合物中の溶媒としてのラクトン Download PDFInfo
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Abstract
Description
(i)農薬有効成分をラクトン誘導体(ラクトン誘導体は6個の炭素原子を有している)の中に溶解させる工程;及び
(ii)(i)の溶液を、水、又は(i)で採用されたラクトン誘導体とは非混和性の他の水性溶媒と組み合わせる工程。
1.1 水性溶解度
ガンマ−カプロラクトンの水溶解度は、HPLCクロマトグラフィーを用いて測定した。ラクトンのいくつかのサンプルを、室温で、等容積の水と平衡に達しさせた。それらのサンプルを2週間放置してから、HPLCにより分析した。繰り返し測定の結果を下の表1に示すが、ガンマ−カプロラクトンの水溶解度が、ほぼ11%(w/w)であることは一目瞭然である。
ガンマ−カプロラクトンのサンプルを、オクタノールで飽和させたクロマトグラフィーカラムを使用して調べた。カラム上での保持時間から、温度25℃、pH6.98でのオクタノール水分配係数(logP octanol)が、0.34であることが示された。
アゾキシストロビンを、一連の有機液体(それらの内のいくつかは、農薬のための溶媒として公知である)の中に室温で溶解させ、平衡に達しさせた。所定量の水を加え、それぞれの混合物を振盪した。水の容積は、有機液体/溶媒の容積の20倍であった。静置した後、それらのサンプルが次のいずれであるかを評価した:(i)二層に分離し、殺生物剤の結晶化の形跡なし、又は(ii)単一層とみなされ、殺生物剤が結晶として沈降。
2種の溶媒、Dowanol(商標)TPM(トリプロピレングリコールメチルエーテル、The Dow Chemical Company)及びヘキシレングリコールは、それらのlogP octanol値の点でγ−カプロラクトンに類似しており、また、20℃で水と完全に混和性である。この実施例においては、数種の微生物有効農薬成分(マンジプロパミド、フルジオキソニル、ピノキサデン、及びジフェノコナゾール)を、これら3種の溶媒のそれぞれの中に溶解させて、5%(w/w)溶液を得た。次いで、それぞれの溶液を水中に希釈して、20:1混合物を形成させた。観察結果を下の表3に示す。
下の表4に列記したそれぞれの農薬有効成分の少量を、溶媒としてのガンマ−カプロラクトンに添加し、溶解させた。次いで、界面活性剤のSoprophor(商標)3D33(トリスチリルフェノールエトキシレートのリン酸エステル、SOLVAY)を添加して5%(w/w)とした。得られたサンプルを水に希釈すると、すべてのものが、容易に乳化するのが認められた。
この実施例においては、アゾキシストロビンのEC配合物を、下の表5に記載した組成を用いて調製した。それらの成分を共に混合して、透明な溶液を形成させた。そのECは、室温で2週間安定であることを示した。
この実施例においては、2種の殺真菌性有効成分、アゾキシストロビン及びソラテノールを、ガンマ−カプロラクトン及び第二の溶媒のジメチルラクトアミドと組み合わせることによって、2種の殺真菌剤のEC配合物を調製した。それらの成分を共に混合すると、透明な溶液が形成された。少量の界面活性剤のSoprophor(商標)4D384(トリスチリルフェノールエトキシレートスルフェート、SOLVAY)を、その溶液に添加し、水の中に希釈して、そのエマルション特性を調べた。1/100の希釈では、そのエマルションは、24時間安定であった。
この実施例においては、複合ECを形成させたが、それには、3種の除草剤と除草剤セーフナーとが含まれていた。下の表6に記載の成分を共に混合して、ECを形成させた。得られたECは、水中に容易に希釈され、乳白色のエマルションが形成された。
本発明のまた別の態様は、以下のとおりであってもよい。
〔1〕農薬組成物であって、前記組成物が、乳剤(EC)又は水中エマルション(EW)であり、
(i)農薬有効成分;及び
(ii)6個の炭素原子を有するラクトン誘導体;
を含み、
前記(i)の農薬有効成分が、前記(ii)のラクトン誘導体の中に溶解されている、農薬組成物。
〔2〕界面活性剤をさらに含む、前記〔1〕に記載の農薬組成物。
〔3〕前記ラクトン誘導体が、5員のラクトン環を含む、前記〔1〕又は前記〔2〕に記載の農薬組成物。
〔4〕前記ラクトン誘導体が、ガンマ−カプロラクトン又は2−アセチル−ガンマ−ブチロラクトンである、前記〔1〕〜〔3〕のいずれか1項に記載の農薬組成物。
〔5〕前記農薬有効成分が、除草剤、セーフナー、殺虫剤、殺真菌剤、線虫駆除剤、軟体動物駆除剤、又は植物成長調節物質である、前記〔1〕〜前記〔4〕のいずれか1項に記載の農薬組成物。
〔6〕前記農薬有効成分が、除草剤、セーフナー、殺虫剤、又は殺真菌剤である、前記〔1〕〜前記〔5〕のいずれか1項に記載の農薬組成物。
〔7〕前記農薬有効成分が、20℃で、10g/L未満の水溶解度を有する、前記〔1〕〜前記〔6〕のいずれか1項に記載の農薬組成物。
〔8〕乳剤、水中エマルション、又はマイクロエマルション中における、微生物活性のある農薬有効成分のための溶媒としての、6個の炭素原子を有するラクトン誘導体の使用。
〔9〕前記ラクトン誘導体が、5員のラクトン環を含み、全部で6個の炭素原子を有する、前記〔8〕に記載の使用。
〔10〕前記ラクトン誘導体が、ガンマ−カプロラクトン又は2−アセチル−ガンマ−ブチロラクトンである、前記〔8〕又は前記〔9〕に記載の使用。
〔11〕乳剤、水中エマルション、又はマイクロエマルションである農薬組成物を作製するための方法であって、
(i)農薬有効成分をラクトン誘導体(前記ラクトン誘導体は6個の炭素原子を有している)の中に溶解させる工程;及び
(ii)前記(i)の溶液を、水、又は(i)で採用された前記ラクトン誘導体とは非混和性である他の水性溶媒と組み合わせる工程;
を含む方法。
〔12〕有害生物を防除する方法であって、前記〔1〕〜〔7〕のいずれか1項で定義された農薬組成物を、前記有害生物又は前記有害生物の生息場所に適用することを含む、方法。
〔13〕植物における真菌感染を処置又は予防するための方法であって、前記植物又は前記植物の生息場所に対して、6個の炭素原子を有するラクトン誘導体の中に溶解された殺真菌性有効成分を含む組成物を適用することを含む、方法。
〔14〕植物の中の虫を防除するための方法であって、前記植物又は前記植物の生息場所に対して、6個の炭素原子を有するラクトン誘導体の中に溶解された殺虫性有効成分を含む組成物を適用することを含む、方法。
〔15〕望ましくない植物の成長を防除するための方法であって、前記植物又は前記植物の生息場所に対して、6個の炭素原子を有するラクトン誘導体の中に溶解された除草性有効成分を含む組成物を適用することを含む、方法。
Claims (15)
- 農薬組成物であって、前記組成物が、乳剤(EC)又は水中エマルション(EW)であり、
(i)農薬有効成分;及び
(ii)6個の炭素原子を有するラクトン誘導体;
を含み、
前記(i)の農薬有効成分が、前記(ii)のラクトン誘導体の中に溶解されている、農薬組成物。 - 界面活性剤をさらに含む、請求項1に記載の農薬組成物。
- 前記ラクトン誘導体が、5員のラクトン環を含む、請求項1又は請求項2に記載の農薬組成物。
- 前記ラクトン誘導体が、ガンマ−カプロラクトン又は2−アセチル−ガンマ−ブチロラクトンである、請求項1〜3のいずれか1項に記載の農薬組成物。
- 前記農薬有効成分が、除草剤、セーフナー、殺虫剤、殺真菌剤、線虫駆除剤、軟体動物駆除剤、又は植物成長調節物質である、請求項1〜請求項4のいずれか1項に記載の農薬組成物。
- 前記農薬有効成分が、除草剤、セーフナー、殺虫剤、又は殺真菌剤である、請求項1〜請求項5のいずれか1項に記載の農薬組成物。
- 前記農薬有効成分が、20℃で、10g/L未満の水溶解度を有する、請求項1〜請求項6のいずれか1項に記載の農薬組成物。
- 乳剤、水中エマルション、又はマイクロエマルション中における、微生物活性のある農薬有効成分のための溶媒としての、6個の炭素原子を有するラクトン誘導体の使用。
- 前記ラクトン誘導体が、5員のラクトン環を含み、全部で6個の炭素原子を有する、請求項8に記載の使用。
- 前記ラクトン誘導体が、ガンマ−カプロラクトン又は2−アセチル−ガンマ−ブチロラクトンである、請求項8又は請求項9に記載の使用。
- 乳剤、水中エマルション、又はマイクロエマルションである農薬組成物を作製するための方法であって、
(i)農薬有効成分をラクトン誘導体(前記ラクトン誘導体は6個の炭素原子を有している)の中に溶解させる工程;及び
(ii)前記(i)の溶液を、水、又は(i)で採用された前記ラクトン誘導体とは非混和性である他の水性溶媒と組み合わせる工程;
を含む方法。 - 有害生物を防除する方法であって、請求項1〜7のいずれか1項で定義された農薬組成物を、前記有害生物又は前記有害生物の生息場所に適用することを含む、方法。
- 植物における真菌感染を処置又は予防するための方法であって、前記植物又は前記植物の生息場所に対して、6個の炭素原子を有するラクトン誘導体の中に溶解された殺真菌性有効成分を含む組成物を適用することを含む、方法。
- 植物の中の虫を防除するための方法であって、前記植物又は前記植物の生息場所に対して、6個の炭素原子を有するラクトン誘導体の中に溶解された殺虫性有効成分を含む組成物を適用することを含む、方法。
- 望ましくない植物の成長を防除するための方法であって、前記植物又は前記植物の生息場所に対して、6個の炭素原子を有するラクトン誘導体の中に溶解された除草性有効成分を含む組成物を適用することを含む、方法。
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AR118298A1 (es) * | 2020-05-08 | 2021-09-29 | Red Surcos Colombia Ltda | Composición de prometrina en forma de micro emulsión |
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