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JPH0441B2 - - Google Patents
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JPH0441B2 - - Google Patents

Info

Publication number
JPH0441B2
JPH0441B2 JP3783786A JP3783786A JPH0441B2 JP H0441 B2 JPH0441 B2 JP H0441B2 JP 3783786 A JP3783786 A JP 3783786A JP 3783786 A JP3783786 A JP 3783786A JP H0441 B2 JPH0441 B2 JP H0441B2
Authority
JP
Japan
Prior art keywords
foaming
emulsion
agent
soluble
present
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
Application number
JP3783786A
Other languages
Japanese (ja)
Other versions
JPS62195313A (en
Inventor
Tooru Hatsutori
Mamoru Yoneda
Isao Yasui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Nohyaku Co Ltd
Original Assignee
Nihon Nohyaku Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon Nohyaku Co Ltd filed Critical Nihon Nohyaku Co Ltd
Priority to JP3783786A priority Critical patent/JPS62195313A/en
Publication of JPS62195313A publication Critical patent/JPS62195313A/en
Publication of JPH0441B2 publication Critical patent/JPH0441B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は白蟻防除分野で起泡剤と併用して発泡
散布するに適した乳剤組成物に関する。 〔従来技術〕 従来、白蟻防除の分野では、白蟻の生態から床
下処理を行なつているが、床下という狭い空間内
での防除作業は効率が悪いばかりでなく、作業従
事者の健康管理上からも好ましくないため、薬剤
を泡状にして適用する発泡施工方法が主流となり
つつある。発泡施工方法に用いられる薬剤は、主
としてクロルデンを有効成分として、水溶性の溶
剤を用いた発泡性乳剤の形で製剤されている。 〔発明が解決しようとする問題点〕 近時、クロルデンは土壌残留性、魚体蓄積性の
点で問題となつており、これに代わる化合物を有
効成分として含有する発泡性製剤が強く望まれて
いるものである。発泡性製剤においては、油溶性
溶剤を用いると発泡性能が低下するので水溶性溶
剤が用いられている。しかしながら、白蟻防除剤
として有効はO−3,5,6−トリクロロ−2−
ピリジルO,O−ジエチルホスホロチオエート
(以下クロルピリホスという)は、結晶で低温時
での溶解性が低いため、クロルデンと同じ製剤で
は貯蔵中に結晶が析出してくる。通常、白蟻防除
業者は、作業の前日に薬剤を調整しておくことが
多いことや、その日の作業で残つた薬液は不足分
をおぎなつて翌日使用することも多いことから、
結晶性の原体で乳化が悪く散布液調製後数時間で
結晶が析出してしまう様な製剤では、多量の薬液
が無駄になつたり、発泡施工に用いるポンプが詰
つたりして問題である。 〔問題点を解決するための手段〕 本発明者らは上記問題点を解決すべく鋭意検討
を行なつた結果、水溶性のメトキシポリエチレン
グリコールの如きアルコキシポリエチレングリコ
ールに対して油溶性のメチルナフタレンを5〜50
重量%配合してなる溶剤を用いることにより結晶
の析出が抑制されることをみいだし本発明を完成
した。 白蟻防除のための発泡施工に用いる乳剤は、通
常白蟻防除用に用いられる乳剤に必要な条件の乳
化、乳化安定性以外に泡安定性、発泡性能をも満
足させる様な製剤でなければならない。白蟻発泡
施工用乳剤には、メチルセロソルブ、ブチルセロ
ソルブ、メチルカルビトール、ブチルカルビトー
ル、ポリオキシエチレングリコール等の水溶性溶
剤も用いられることが知られているが、これらの
溶剤を使用した製剤ではクロルピリホスの結晶の
析出は抑制されるが、所望の発泡性能を確保する
のに難点があり、これらの使用又、クロルピリホ
スの結晶析出抑制のために、メチルナフタレンに
代えてシクロヘキサノン、トリエン、キシレン等
の油溶性の溶剤を使用した場合、クロルピリホス
の結晶析出は抑制されるが、製剤の発泡性能が悪
化するため使用に難点が残る。 本発明においてクロルピリホスの結晶析出抑制
のために添加するメチルナフタレンの場合は、ア
ルコキシポリエチレングリコールに対して5〜50
重量%が好ましく、5重量%以下では結晶が析出
するため、又50重量%以上では発泡性能が悪くな
るため使用できない。 本発明薬剤には、乳化剤としての界面活性剤及
び泡安定剤を添加することができ、この場合一般
に製剤に対してそれぞれ3〜10重量%及び1〜3
重量%添加される。 本発明薬剤には白蟻防除剤と併用して用いられ
る木材防腐剤を添加してもよい。 更に本発明薬剤には、発泡散布に適した諸性質
(例えば乳化性、乳化安定性、泡安定性、発泡性
等)を著しく悪化させない範囲で、他の補助剤
(例えば溶媒、起泡剤)を混合することも可能で
ある。 本発明薬剤は使用に際しては所定の濃度に希釈
して、(起泡剤を添加していない場合は別途に起
泡剤を添加した後)、市販の発泡散布器具(例え
ば「トルトル〕なる商標名で市販されている散布
器具)を使用して散布すればよい。 〔実施例及び試験例〕 次に本発明の若干の実施例、試験例を示すが、
これらに限定されるものではない。 実施例 1 クロルピリホス 20% 乳化剤(東邦化学 ソルポール3637) 5% メチルナフタレン 4% メトキシポリエチレングリコール 70% ラウリルアルコール(泡安定剤として) 1% をよく混合して乳剤とする。 同様にして表1に示した実施例2、比較例1〜
9の乳剤を調製した。
[Industrial Application Field] The present invention relates to an emulsion composition suitable for use in combination with a foaming agent for foaming and dispersion in the field of termite control. [Prior art] Conventionally, in the field of termite control, under-floor treatment has been carried out based on the ecology of termites, but control work in the narrow space under the floor is not only inefficient, but also poses health problems for workers. Since this is also undesirable, foaming methods in which the chemical is applied in the form of foam are becoming mainstream. The drug used in the foaming method is formulated in the form of a foamable emulsion containing mainly chlordane as an active ingredient and using a water-soluble solvent. [Problems to be solved by the invention] In recent years, chlordane has become a problem in terms of persistence in soil and accumulation in fish bodies, and there is a strong desire for an effervescent preparation containing an alternative compound as an active ingredient. It is something. In foamable preparations, water-soluble solvents are used because foaming performance deteriorates when oil-soluble solvents are used. However, O-3,5,6-trichloro-2-
Pyridyl O,O-diethyl phosphorothioate (hereinafter referred to as chlorpyrifos) is crystalline and has low solubility at low temperatures, so in the same formulation as chlordane, crystals precipitate during storage. Normally, termite control companies often prepare chemicals the day before work, and the chemicals left over from that day's work are often used the next day to make up for the shortage.
For formulations that are crystalline and have poor emulsification and crystals precipitate within a few hours after preparing the spray solution, there are problems such as a large amount of chemical solution being wasted and the pump used for foaming construction clogging. . [Means for Solving the Problems] The present inventors have conducted intensive studies to solve the above problems, and as a result, we have developed an oil-soluble methylnaphthalene solution for alkoxypolyethylene glycols such as water-soluble methoxypolyethylene glycols. 5~50
The present invention was completed based on the discovery that the precipitation of crystals can be suppressed by using a solvent containing a mixture of % by weight. The emulsion used in foaming construction for termite control must be a formulation that satisfies not only the emulsification and emulsion stability conditions required for emulsions normally used for termite control, but also foam stability and foaming performance. It is known that water-soluble solvents such as methyl cellosolve, butyl cellosolve, methyl carbitol, butyl carbitol, and polyoxyethylene glycol are also used in termite foaming emulsions, but in formulations using these solvents, chlorpyrifos Although the precipitation of crystals of chlorpyrifos is suppressed, there are difficulties in securing the desired foaming performance. When a soluble solvent is used, crystal precipitation of chlorpyrifos is suppressed, but the foaming performance of the formulation deteriorates, so there remains a difficulty in its use. In the case of methylnaphthalene added to suppress crystal precipitation of chlorpyrifos in the present invention, 5 to 50%
It is preferably 5% by weight or less, since crystals will precipitate, and if it is more than 50% by weight, the foaming performance will deteriorate, so it cannot be used. A surfactant as an emulsifier and a foam stabilizer can be added to the drug of the present invention, and in this case, generally 3 to 10% by weight and 1 to 3% by weight of the formulation, respectively.
% by weight is added. A wood preservative used in combination with a termite control agent may be added to the agent of the present invention. Furthermore, the drug of the present invention may contain other auxiliary agents (e.g., solvents, foaming agents) to the extent that the properties suitable for foam dispersion (e.g., emulsifying properties, emulsion stability, foam stability, foaming properties, etc.) are not significantly deteriorated. It is also possible to mix. Before use, the agent of the present invention is diluted to a predetermined concentration (if no foaming agent is added, then a foaming agent is added separately), and then the agent is prepared using a commercially available foam dispersion device (for example, the trademark name "Tortle"). It may be sprayed using a commercially available spraying device). [Examples and Test Examples] Next, some Examples and Test Examples of the present invention will be shown.
It is not limited to these. Example 1 20% chlorpyrifos, 5% emulsifier (Solpol 3637, Toho Chemical), 4% methylnaphthalene, 70% methoxypolyethylene glycol, and 1% lauryl alcohol (as a foam stabilizer) were thoroughly mixed to form an emulsion. Similarly, Example 2 and Comparative Examples 1 to 1 shown in Table 1
No. 9 emulsions were prepared.

【表】 試験例 乳化及び乳化安定性試験 前記で調製した乳剤を、水で20倍に希釈し、乳
化直後及び24時間後の乳化状態(結晶の析出の有
無等)を観察した。 発泡性試験 前記で調製した乳剤を水で20倍に希釈し、起泡
剤としてドルフオーム3%を添加した薬液をトル
トル型ヘツド(出願人が製造販売)を用いて発
泡させ、発泡性を肉眼観察により起泡剤ドルフオ
ームのみで発泡させた場合と比較して、同等程度
の場合を○、かなり劣る場合を△、発泡しない場
合を×として評価した。 結果を表2に示す。
[Table] Test Example Emulsification and Emulsion Stability Test The emulsion prepared above was diluted 20 times with water, and the emulsion state (presence or absence of crystal precipitation, etc.) was observed immediately after emulsification and 24 hours later. Foaming property test The emulsion prepared above was diluted 20 times with water, and the chemical solution to which 3% Dolphohm was added as a foaming agent was foamed using a tortle type head (manufactured and sold by the applicant), and the foaming property was observed with the naked eye. Compared to the case of foaming using only the foaming agent Dolph Ohm, the results were evaluated as ◯ if the foaming was the same, △ if it was considerably inferior, and × if there was no foaming. The results are shown in Table 2.

〔発明の効果〕〔Effect of the invention〕

結晶性のクロルピリホス乳剤の調製に際して、
水溶性のアルコキシポリエチレングリコールに対
して油溶性のメチルナフタレンを配合することに
より、結晶の析出が抑制できるので、本発明薬剤
は白蟻防除用の発泡性製剤として有用なものであ
る。
In preparing crystalline chlorpyrifos emulsion,
By blending oil-soluble methylnaphthalene with water-soluble alkoxypolyethylene glycol, precipitation of crystals can be suppressed, so the agent of the present invention is useful as a foamable preparation for controlling termites.

Claims (1)

【特許請求の範囲】[Claims] 1 アルコキシポリエチレングリコールに対して
メチルナフタレン5〜50重量%配合してなる溶媒
を用いたことを特徴とするO−3,5,6−トリ
クロロ−2−ピリジルO,O−ジエチルホスホロ
チオエート乳剤組成物。
1. An O-3,5,6-trichloro-2-pyridyl O,O-diethylphosphorothioate emulsion composition, characterized in that it uses a solvent containing 5 to 50% by weight of methylnaphthalene based on alkoxypolyethylene glycol.
JP3783786A 1986-02-22 1986-02-22 Foamable emulsion composition Granted JPS62195313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3783786A JPS62195313A (en) 1986-02-22 1986-02-22 Foamable emulsion composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3783786A JPS62195313A (en) 1986-02-22 1986-02-22 Foamable emulsion composition

Publications (2)

Publication Number Publication Date
JPS62195313A JPS62195313A (en) 1987-08-28
JPH0441B2 true JPH0441B2 (en) 1992-01-06

Family

ID=12508641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3783786A Granted JPS62195313A (en) 1986-02-22 1986-02-22 Foamable emulsion composition

Country Status (1)

Country Link
JP (1) JPS62195313A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4498484B2 (en) * 1998-12-17 2010-07-07 新日本石油株式会社 Emulsion composition and method of using the composition

Also Published As

Publication number Publication date
JPS62195313A (en) 1987-08-28

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