JPH09227303A - Sustained releasing insecticide - Google Patents
Sustained releasing insecticideInfo
- Publication number
- JPH09227303A JPH09227303A JP3483096A JP3483096A JPH09227303A JP H09227303 A JPH09227303 A JP H09227303A JP 3483096 A JP3483096 A JP 3483096A JP 3483096 A JP3483096 A JP 3483096A JP H09227303 A JPH09227303 A JP H09227303A
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- Japan
- Prior art keywords
- insecticide
- silicon oxide
- oxide powder
- compound
- sustained
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、植物を対象とした
土壌潅注用の殺虫剤に関し、具体的には殺虫剤を含む液
滴を超微粒子粉末で被覆した構造をもつ徐放性殺虫剤に
関するものである。TECHNICAL FIELD The present invention relates to an insecticide for soil irrigation of plants, and more specifically to a sustained release insecticide having a structure in which droplets containing the insecticide are coated with ultrafine powder. It is a thing.
【０００２】[0002]
【従来の技術】従来、植物用の殺虫剤としては、各種の
葉散布用の液状殺虫剤、または土壌散布、潅注用の殺虫
剤（固形、液状）が広く知られている。Conventionally, as insecticides for plants, liquid insecticides for spraying various leaves, or insecticides (solid or liquid) for spraying soil or irrigation are widely known.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上述せる従来
の技術では、例えば、葉散布用の液状殺虫剤の場合、幼
虫が孵化したときは、まだ殻をかぶつていないので、薬
がよく効くが、堅い殻をかぶつている成虫では、薬をか
けても殻が邪魔して、なかなか効果が出ない。また幼虫
の発生期もまちまちで、散布後の多量降雨による散布薬
の流出等のため、何回にも分けて散布しないと効果がな
いため、非常に労力を要する。土壌散布、潅注の場合、
散布等の直後に多量の降雨があると、折角散布した殺虫
剤が流出して、損失を受ける。また固形の殺虫剤の場
合、降雨、潅水により固形物を溶解して、これが植物に
吸収されて初めて薬効が生じるので、降雨量、潅水量が
時期的に適量でないと、薬効が一定せず、例えば飛来し
てくる害虫の場合には、常に相当な観察をもつて対応せ
ねばならず大変である。However, in the conventional technique described above, for example, in the case of a liquid insecticide for spraying leaves, when the larvae hatch, the drug is effective because the shell does not cover the shell. However, in adults with hard shells, the shells interfere with the application of the drug, and the effect is difficult to achieve. In addition, the larvae are in various stages of development, and because of the spraying of the spraying agent due to heavy rainfall after spraying, it will be ineffective unless it is sprayed several times, which is extremely laborious. For soil application and irrigation,
If there is a large amount of rainfall immediately after spraying, the sprayed insecticide will flow out, resulting in loss. In the case of solid insecticides, the solid substance is dissolved by rainfall and irrigation, and the medicinal effect occurs only when it is absorbed by plants, so if the rainfall amount and the irrigation amount are not appropriate in time, the medicinal effect will not be constant. For example, in the case of a pest that comes in, it is difficult to deal with it by always observing a considerable amount.
【０００４】本発明の目的は、殺虫剤散布の時期につい
て、あまり心配することなく、必要な量を一定時期に散
布して置くことにより、多量の降雨に曝されたとしても
殺虫剤の流出が少なく、有効な時効性を保ち、時間経過
と共に、ほぼ一定の殺虫効果をもたらす徐放性殺虫剤を
提供することを目的とする。The object of the present invention is not to worry much about the timing of spraying the insecticide, and by spraying the necessary amount at a certain time, the insecticide can be discharged even if it is exposed to a large amount of rainfall. It is an object of the present invention to provide a sustained-release insecticide which is small in amount, retains effective aging properties, and provides an almost constant insecticidal effect over time.
【０００５】[0005]
【課題を解決するための手段】本発明者等は、上記目的
を満足せしめる徐放性殺虫剤を開発すべく研究を進めた
結果、疎水性超微粒子酸化ケイ素粉末によって、殺虫剤
を含有する液滴を被覆するという全く新規な着想によっ
て、上記目的を達成出来るとの知見を得たのである。疎
水性超微粒子酸化ケイ素粉末は、水分と混合すると、水
滴を被覆して粉雪状になることが知られており、この粉
末を有用成分である殺虫剤を含む液滴の被覆に利用する
ことにより、その成分に徐放性を付与し、持効性を得る
ことが出来るとの知見を得たのである。Means for Solving the Problems The inventors of the present invention have conducted research to develop a sustained-release insecticide satisfying the above-mentioned object. As a result, a liquid solution containing an insecticide is obtained by using hydrophobic ultrafine silicon oxide powder. We have found that the above object can be achieved by a completely new idea of coating drops. It is known that hydrophobic ultrafine silicon oxide powder, when mixed with water, coats water droplets to form snow powder. By using this powder for coating droplets containing a useful ingredient, an insecticide, It has been found that the sustained-release property can be imparted to the component and the sustained-release effect can be obtained.
【０００６】本発明は、上述の知見のに基づいてなされ
たものであって、（１）殺虫剤を含有する液滴を疎水性
超微粒子酸化ケイ素粉末で被覆してなる徐放性殺虫剤、
（２）前記疎水性超微粒子酸化ケイ素粉末が０．００７
〜０．０５μｍの平均粒子径を有する（１）記載の徐放
性殺虫剤、（３）前記疎水性超微粒子酸化ケイ素粉末が
ハロゲン化ケイ素の気相酸化により得られた超微粒子酸
化ケイ素粉末に、有機ケイ素化合物、有機フッ素化合物
または、有機チタン化合物のうちのいずれか１種を被覆
した粉末である（１）または（２）記載の徐放性殺虫
剤、（４）上記（３）記載の有機ケイ素化合物が、シラ
ンカップリング剤またはシリコ−ンオイルであり、有機
フッ素化合物が、有機フッ素基を有するシランカップリ
ング剤であり、有機チタン化合物が、チタン系カップリ
ング剤である（３）記載の徐放性殺虫剤、に特徴を有す
るものである。The present invention has been made on the basis of the above findings, and (1) a sustained-release insecticide obtained by coating droplets containing an insecticide with a hydrophobic ultrafine silicon oxide powder,
(2) 0.007 of the hydrophobic ultrafine silicon oxide powder
(1) The sustained-release insecticide according to (1), which has an average particle diameter of 0.05 μm to (3), wherein the hydrophobic ultrafine silicon oxide powder is an ultrafine silicon oxide powder obtained by vapor phase oxidation of silicon halide. The sustained-release insecticide according to (1) or (2), which is a powder coated with any one of an organosilicon compound, an organofluorine compound, and an organotitanium compound, (4) according to (3) above. The organosilicon compound is a silane coupling agent or silicone oil, the organofluorine compound is a silane coupling agent having an organofluorine group, and the organotitanium compound is a titanium coupling agent (3). It is characterized by a sustained-release insecticide.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態につい
て、具体的に説明する。本発明は、殺虫剤を含有した液
滴の表面を、微粉末シリカの表面に疎水処理を施して成
る疎水性超微粉末で被覆した構造をしており、内部の殺
虫剤を含有した液体は、その外側の疎水性超微粉末間に
存在する小さな隙間を通して、徐々に外部に放出され
る。このため、内部の殺虫剤を含んだ液体は、すぐに放
出されて無くなるようなことがなく、長時間に亘って、
殺虫効果が保たれる。また、該微粉末シリカには、疎水
処理が施されているため、内部には液体が存在するにも
関わらず、全体として、疎水性の性質も有しており、粉
雪のような感じとなり、本来液体の殺虫剤でありなが
ら、従来にはなかったさらさらした流動性ある性状を有
するものとなる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below. The present invention has a structure in which the surface of droplets containing an insecticide is coated with a hydrophobic ultrafine powder obtained by subjecting the surface of fine powder silica to a hydrophobic treatment, and the liquid containing the insecticide inside is , Is gradually released to the outside through the small gaps existing between the hydrophobic ultrafine powders on the outside. Therefore, the liquid containing the insecticide inside is not released immediately and disappears, and for a long time,
The insecticidal effect is maintained. Further, since the fine powder silica has been subjected to a hydrophobic treatment, it has a hydrophobic property as a whole, despite the presence of a liquid inside, and has a feeling like powder snow, Although it is essentially a liquid insecticide, it has a free-flowing, fluid property that was not available in the past.
【０００８】本発明で、液滴の被覆に用いる疎水性超微
粒子酸化ケイ素粉末は、気相法コロイドシリカあるいは
ヒュームドシリカとして知られるハロゲン化ケイ素
（例、四塩化ケイ素）の気相酸化により得られる超微粒
子酸化ケイ素粉末に、疎水化処理を施したものである。
この粉末の平均一次粒子径は０．００７〜０．０５μｍ
の範囲が好ましく、これは平均一次粒子径が０．００７
μｍ未満では、粉末の扱いが難しく、０．０５μｍを越
えると液滴を均一に被覆することが次第に難しくなるた
めである。In the present invention, the hydrophobic ultrafine silicon oxide powder used for coating the droplets is obtained by vapor-phase oxidation of silicon halide (eg, silicon tetrachloride) known as vapor-phase colloidal silica or fumed silica. The obtained ultrafine silicon oxide powder is subjected to a hydrophobic treatment.
The average primary particle size of this powder is 0.007 to 0.05 μm.
Is preferred, which has an average primary particle size of 0.007.
This is because if it is less than μm, it is difficult to handle the powder, and if it exceeds 0.05 μm, it becomes gradually difficult to uniformly coat the droplets.
【０００９】気相法で得た超微粒子酸化ケイ素粉末の疎
水化処理は、この粉末に、例えば有機ケイ素化合物を被
覆することにより行うことが出来る。疎水化処理に使用
できる有機ケイ素化合物としては、シランカップリング
剤（ジメチルジクロロシラン、ヘキサメチルジシラザ
ン、ヘキシルトリメトキシシラン等）およびシリコーン
オイル（ジメチルシリコーン等）が掲げられる。こらは
いずれも室温で液状であり、希釈せずに疎水化処理に使
用できるが、室温で個体の有機ケイ素化合物の場合に
は、適当な揮発性溶媒に溶解して使用しても良い。疎水
化剤としては、有機ケイ素化合物以外に有機フッ素化合
物、有機チタン化合物も使用できる。有機フッ素化合物
としては、有機フッ素基を有するシランカップリング剤
（ＭＦ−１６０、パ−フルオロヘキシルエチルトリメト
キシシラン等）が、また有機チタン素化合物としては、
チタンカップリング剤（チタンイソプロポキシド等）が
掲げられる。The ultrafine silicon oxide powder obtained by the vapor phase method can be hydrophobized by coating the powder with, for example, an organic silicon compound. Examples of the organosilicon compound that can be used for the hydrophobic treatment include silane coupling agents (dimethyldichlorosilane, hexamethyldisilazane, hexyltrimethoxysilane, etc.) and silicone oils (dimethylsilicone, etc.). All of these are liquid at room temperature and can be used for the hydrophobizing treatment without dilution, but in the case of solid organosilicon compounds at room temperature, they may be dissolved in a suitable volatile solvent before use. As the hydrophobizing agent, an organic fluorine compound or an organic titanium compound may be used in addition to the organic silicon compound. As the organic fluorine compound, a silane coupling agent having an organic fluorine group (MF-160, perfluorohexylethyltrimethoxysilane, etc.), and as the organic titanium compound,
Titanium coupling agents (titanium isopropoxide etc.) are listed.
【００１０】疎水化処理は、超微粒子酸化ケイ素粉末を
撹拌等の適宜手段により流動状態にし（超微粒子である
ため、撹拌で容易に流動状態になる）、これに例えば有
機ケイ素化合物の液体または溶液を噴霧または滴下する
ことにより実施できる。疎水化剤の被覆量は、超微粒子
酸化ケイ素粉末の重量に対して５〜３０重量％の範囲内
が好ましい。噴霧または滴下終了後、流動状態を保持し
ながら、酸化ケイ素粉末を加熱して疎水化剤を粉末表面
に結合させる。この加熱は、例えば１００〜３００℃で
１〜３時間程度行うことが出来る。In the hydrophobizing treatment, ultrafine silicon oxide powder is made into a fluid state by an appropriate means such as stirring (because it is ultrafine particles, it is easily fluidized by stirring). Can be carried out by spraying or dropping. The coating amount of the hydrophobizing agent is preferably within the range of 5 to 30% by weight based on the weight of the ultrafine silicon oxide powder. After the spraying or the dropping, the silicon oxide powder is heated while maintaining the fluidized state, so that the hydrophobizing agent is bonded to the powder surface. This heating can be performed, for example, at 100 to 300 ° C. for about 1 to 3 hours.
【００１１】なお、使用せる超微粒子酸化ケイ素粉末お
よび疎水性超微粒子酸化ケイ素粉末は、いずれも日本ア
エロジル社製である。（疎水性超微粒子酸化ケイ素粉末
の例は、商品名R９７２等）。The ultrafine silicon oxide powder and the hydrophobic ultrafine silicon oxide powder that can be used are both manufactured by Nippon Aerosil Co., Ltd. (An example of hydrophobic ultrafine silicon oxide powder is trade name R972).
【００１２】本発明によれば、この疎水性超微粒子酸化
ケイ素粉末を利用して、殺虫剤を含有する液滴を被覆す
る。この被覆は、疎水性超微粒子酸化ケイ素粉末を強撹
拌して浮遊流動状態にし、そこに殺虫剤の溶液を少しず
つ注入しいくことにより実施できる。それにより、殺虫
剤の溶液が分散されて液滴の表面が疎水性超微粒子酸化
ケイ素粉末で覆われる。その結果、表面が、疎水性にな
り、液滴どうしの凝集、固着が妨げられ、流動性のある
粉雪状の微粉末が生成する。液滴の粒径は、液の粘度、
注入速度、撹拌速度等により制御することが出来る。こ
の時の撹拌速度は、上述した疎水化処理時の撹拌速度と
同程度ないしそれより高くすることが出来るAccording to the present invention, the hydrophobic ultrafine silicon oxide powder is used to coat a droplet containing an insecticide. This coating can be carried out by vigorously stirring the hydrophobic ultrafine silicon oxide powder into a floating fluid state, and then slowly injecting a solution of the insecticide therein. Thereby, the solution of the insecticide is dispersed and the surface of the droplet is covered with the hydrophobic ultrafine silicon oxide powder. As a result, the surface becomes hydrophobic, aggregation and sticking of the liquid droplets are hindered, and powdery snow-like fine powder is generated. The particle size of the droplet is the viscosity of the liquid,
It can be controlled by the injection speed, stirring speed, and the like. The stirring speed at this time can be the same as or higher than the stirring speed at the time of the hydrophobic treatment described above.
【００１３】殺虫剤の溶液を形成するのに用いる溶媒と
しては、通常水が利用される。殺虫剤の溶液の濃度は特
に限定されないが、殺虫効果が失われるほど低濃度とし
たり、或いは上記手段で容易に液滴化できないほど粘度
が高くなるような高濃度の水溶液は好ましくない。殺虫
剤の溶液の粘度は３０ｃＳｔ以下とすることが好まし
い。Water is usually utilized as the solvent used to form the pesticide solution. The concentration of the pesticide solution is not particularly limited, but a high-concentration aqueous solution that is so low that the pesticidal effect is lost or that has a high viscosity that cannot be easily formed into droplets by the above means is not preferable. The viscosity of the pesticide solution is preferably 30 cSt or less.
【００１４】殺虫剤の溶液と被覆材料の疎水性超微粒子
酸化ケイ素粉末との割合は、液滴が完全に被覆されて、
流動性に優れた微粉末が得られる限り、特に制限されな
い。しかし、通常は殺虫剤の溶液５０〜９０重量％、酸
化ケイ素粉末が残り１０〜５０重量％の割合が適当であ
る。The ratio of the pesticide solution to the coating material of the hydrophobic ultrafine silicon oxide powder is such that the droplets are completely covered,
There is no particular limitation as long as a fine powder having excellent fluidity can be obtained. However, a ratio of 50 to 90% by weight of the solution of the insecticide and 10 to 50% by weight of the silicon oxide powder is usually suitable.
【００１５】使用する殺虫剤は、水を使用して、適当な
濃度の溶液を形成できるものであれば、その種類を問わ
ない。例えば、必要に応じて市販の殺虫剤料が使用可能
である。The insecticide used may be of any type as long as it can form a solution having an appropriate concentration using water. For example, a commercially available insecticide material can be used if necessary.
【００１６】殺虫剤の強さと持続性は、殺虫剤の種類と
溶液の濃度、酸化ケイ素粉末と殺虫剤の溶液の割合など
を変化させることにより制御することが出来る。The strength and durability of the insecticide can be controlled by changing the kind of the insecticide, the concentration of the solution, the ratio of the silicon oxide powder to the solution of the insecticide, and the like.
【００１７】[0017]
【実施例】以下、本発明の実施例について、具体的に説
明する。 ［実施例１］超微粒子酸化ケイ素粉末としては、四塩化
ケイ素の気相酸化により形成された平均一次粒子径０．
００７〜０．０５μｍの表１に示す粉末を使用し、同じ
く表１に示す割合（上記粉末に対する重量％）の有機ケ
イ素化合物、有機フッ素化合物または、有機チタン化合
物のうちのいずれか１種からなる疎水化剤を用いて、次
のように疎水化処理した。まず、超微粒子酸化ケイ素粉
末をブレンダーで撹拌（１００００ｒｐｍ）して流動状
態に保持し、これに所定量の疎水化剤を噴霧した。噴霧
後、この混合物を窒素気流中３００ｒｐｍで撹拌しなが
ら、表１に示す温度まで昇温させ、さらにこの温度で２
時間撹拌を続けて、疎水化処理を作製し、表１示す疎水
性超微粒子酸化ケイ素粉末ａ〜ｇ（以下、粉末ａ〜ｇと
いう）を作製した。EXAMPLES Examples of the present invention will be specifically described below. [Example 1] As the ultrafine silicon oxide powder, an average primary particle diameter of 0.
The powder shown in Table 1 having a size of 007 to 0.05 μm is used, and is made of any one of the organosilicon compound, the organofluorine compound, and the organotitanium compound in the proportion (% by weight based on the powder) shown in Table 1. Hydrophobization treatment was performed as follows using a hydrophobizing agent. First, the ultrafine silicon oxide powder was stirred with a blender (10000 rpm) to hold it in a fluidized state, and a predetermined amount of a hydrophobizing agent was sprayed onto it. After spraying, the mixture was heated to the temperature shown in Table 1 while stirring at 300 rpm in a nitrogen stream, and further heated at this temperature for 2 minutes.
Stirring was continued for hydrophobization treatment to prepare hydrophobic ultrafine silicon oxide powders a to g (hereinafter referred to as powders a to g) shown in Table 1.
【００１８】[0018]
【表１】 [Table 1]
【００１９】表１に示す粉末ａ〜ｇの中から選ばれた粉
末をブレンダーで高速撹拌（１００００ｒｐｍ）して浮
遊状態にし、これに表２に示す殺虫剤水溶液を徐々に注
ぎ込み、注入終了後も高速撹拌を１分間続けることによ
り、水滴が疎水性超微粒子酸化ケイ素粉末で被覆された
本発明徐放性殺虫剤１〜１０（以下、本発明殺虫剤１〜
１０という）を作製した。Powders selected from powders a to g shown in Table 1 were stirred at high speed (10000 rpm) with a blender to be in a floating state, and the pesticide aqueous solution shown in Table 2 was gradually poured into the powder, and even after the injection was completed. The sustained-release insecticides 1 to 10 of the present invention in which water droplets are coated with hydrophobic ultrafine silicon oxide powder by continuing high-speed stirring for 1 minute (hereinafter, the insecticides 1 to 1 of the present invention will be described.
10) was produced.
【００２０】[0020]
【表２】 [Table 2]
【００２１】また、比較のために、表２に示した濃度の
殺虫剤を含有した水溶液を比較殺虫水溶液剤１〜２（以
下、比較殺虫剤１〜２という）として作製した。For comparison, aqueous solutions containing the insecticides at the concentrations shown in Table 2 were prepared as comparative insecticide aqueous solution agents 1-2 (hereinafter referred to as comparative insecticides 1-2).
【００２２】次いで、同一環境下で育成し、同程度の植
生を見せている鉢物のサツキ１２鉢を用意し、この中の
１０鉢について、本発明殺虫剤１〜１０をそれぞれ、１
ｍ2当たり２００ｃｃ相当の量を土壌散布した。また、
同様に残２鉢に比較殺虫剤１〜２をそれぞれ上述と同様
の量を、葉上より散布した。散布後、引き続きそれぞれ
の鉢に５ｌ／日の水を３日間散水した。Next, 12 pots of Sasaki, which were grown in the same environment and showed the same level of vegetation, were prepared. 10 of these pots were treated with the insecticides 1 to 10 of the present invention, respectively.
An amount of 200 cc per m 2 was applied to the soil. Also,
Similarly, the comparative insecticides 1 and 2 were sprayed on the remaining 2 pots from the leaves in the same amounts as described above. After spraying, 5 l / day of water was continuously sprayed on each pot for 3 days.
【００２３】その後、上述の鉢物を観察し続けたが、本
発明殺虫剤１〜１０を土壌散布したものは、いずれも害
虫による被害は認められなかつたが、比較殺虫剤１〜２
を葉上散布したものは、ミノムシ類の被害を受け植物体
（主に葉）の約１／３が食い荒らされていた。After that, the above-mentioned pots were continuously observed, and none of the insecticides 1-10 of the present invention sprayed with soil showed any damage by the pests, but the comparative insecticides 1-2.
In the case of spraying on the leaves, about 1/3 of the plants (mainly leaves) were eaten and damaged by the beetles.
【００２４】［実施例２］実施例１と同様に、表１に示
す粉末ａ〜ｇを用い、実施例１と同様にして表３に示す
殺虫剤を含有する水溶液を用い、疎水性超微粒子酸化ケ
イ素粉末で被覆された本発明徐放性殺虫剤１１〜２０
（以下、本発明殺虫剤１１〜２０という）を得た。Example 2 As in Example 1, the powders a to g shown in Table 1 were used, and the aqueous solution containing the insecticide shown in Table 3 was used in the same manner as in Example 1 to prepare hydrophobic ultrafine particles. The sustained-release insecticides 11 to 20 of the present invention coated with silicon oxide powder
(Hereinafter, referred to as insecticides 11 to 20 of the present invention).
【００２５】[0025]
【表３】 [Table 3]
【００２６】また、比較のため表３に示した濃度の殺虫
剤を含有した水溶液を、比較殺虫水溶液剤３〜４（以
下、比較殺虫剤３〜４という）として作製した。For comparison, aqueous solutions containing the insecticides at the concentrations shown in Table 3 were prepared as comparative insecticide aqueous solution agents 3 to 4 (hereinafter referred to as comparative insecticides 3 to 4).
【００２７】次いで、ダリヤを等間隔に植え、同程度の
植生を見せている区域を、１２区画に分け、この中の１
０区画に、本発明殺虫剤１１〜２０をそれぞれ、１ｍ2
当たり２００ｃｃ相当の量土壌散布した。また、同様に
残２区画に、比較殺虫剤３〜４をそれぞれ、上述と同様
の量を土壌より散布した。散布後、引き続き各区画に３
ｌ／日の水を３日間散水した。Next, dahlia were planted at equal intervals, and the area showing the same level of vegetation was divided into 12 sections.
Insecticides 11 to 20 of the present invention were added to 0 compartment for each 1 m 2
An amount of 200 cc per soil was sprayed. Similarly, the same amount as the above was sprayed from the soil to the remaining 2 sections, respectively, with the comparative insecticides 3 to 4. After spraying, continue to 3 in each section
1 / day of water was sprinkled for 3 days.
【００２８】その後、上述の各区画を観察し続けたが、
本発明殺虫剤１１〜２０を土壌散布したダリヤは、いず
れも害虫による被害は認められなかつたが、比較殺虫剤
３〜４を散布した ダリヤは、コガネムシの幼虫により
根をかじられ枯死してしまつた。After that, while continuing to observe the above-mentioned sections,
None of the dahlia sprayed with the insecticides 11 to 20 of the present invention was damaged by the pests, but the dahlia sprayed with the comparative insecticides 3 to 4 was rooted by the scarab beetle larvae and died. Ivy.
【００２９】[0029]
【発明の効果】上述の結果から明らかな様に、本発明殺
虫剤１〜２０は、殺虫剤を含有する液滴が、疎水性超微
粒子酸化ケイ素粉末で被覆されていることにより、内蔵
せる殺虫剤を云々に放出するという徐放性が付与される
ため、比較殺虫剤１〜４に較べ、優れた徐放性を示し、
殺虫剤の有効持続性が得られる。本発明殺虫剤は、疎水
性超微粒子酸化ケイ素粉末を撹拌して浮遊流動化させ、
そこに殺虫剤を含有する水溶液を注入するという簡単な
手段で製造でき、それにより各種の殺虫剤に徐放性を低
コストで付与することが出来る。また本発明殺虫剤は、
粉雪状を呈し、流動性に優れているため、取り扱いが容
易いであり、関連分野において、大いに貢献するもので
ある。As is clear from the above results, the insecticides 1 to 20 of the present invention have a structure in which the droplets containing the insecticide are coated with the hydrophobic ultrafine silicon oxide powder so that the insecticide can be incorporated therein. Since the sustained release property of releasing the agent is given, it shows superior sustained release property as compared with the comparative insecticides 1 to 4,
Effective persistence of insecticide is obtained. The insecticide of the present invention is a suspension fluidized by stirring hydrophobic ultrafine particle silicon oxide powder,
It can be produced by a simple means of injecting an aqueous solution containing an insecticide therein, whereby various insecticides can be given sustained release at low cost. Further, the insecticide of the present invention,
It has the shape of powder snow and has excellent fluidity, so it is easy to handle and contributes greatly to related fields.
Claims (4)
子酸化ケイ素粉末で被覆してなることを特徴とする徐放
性殺虫剤。1. A sustained-release insecticide, characterized in that droplets containing the insecticide are coated with hydrophobic ultrafine silicon oxide powder.
０．００７〜０．０５μｍの平均一次粒子径であること
を特徴とする請求項１記載の徐放性殺虫剤。2. The hydrophobic ultrafine silicon oxide powder,
The sustained-release insecticide according to claim 1, which has an average primary particle size of 0.007 to 0.05 μm.
ハロゲン化ケイ素の気相酸化により得た超微粒子酸化ケ
イ素粉末に有機ケイ素化合物、有機フッ素化合物また
は、有機チタン化合物のうちのいずれか１種を被覆した
粉末であることを特徴とする請求項１または２記載の徐
放性殺虫剤。3. The hydrophobic ultrafine silicon oxide powder,
2. An ultrafine silicon oxide powder obtained by vapor-phase oxidation of silicon halide, which is a powder obtained by coating any one of an organosilicon compound, an organofluorine compound, and an organotitanium compound. 2. The sustained-release insecticide according to 2.
が、シランカップリング剤またはシリコ−ンオイルであ
り、有機フッ素化合物が、有機フッ素基を有するシラン
カップリング剤であり、有機チタン化合物が、チタン系
カップリング剤であることを特徴とする請求項３記載の
徐放性殺虫剤。4. The organosilicon compound according to claim 3 is a silane coupling agent or silicone oil, the organofluorine compound is a silane coupling agent having an organofluorine group, and the organotitanium compound is titanium. The sustained-release insecticide according to claim 3, which is a system coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3483096A JPH09227303A (en) | 1996-02-22 | 1996-02-22 | Sustained releasing insecticide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3483096A JPH09227303A (en) | 1996-02-22 | 1996-02-22 | Sustained releasing insecticide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09227303A true JPH09227303A (en) | 1997-09-02 |
Family
ID=12425126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3483096A Withdrawn JPH09227303A (en) | 1996-02-22 | 1996-02-22 | Sustained releasing insecticide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09227303A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003531156A (en) * | 2000-04-27 | 2003-10-21 | ソレックス リミテッド | Biocidal composition comprising foamed gel containing hydrophobic silica |
-
1996
- 1996-02-22 JP JP3483096A patent/JPH09227303A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003531156A (en) * | 2000-04-27 | 2003-10-21 | ソレックス リミテッド | Biocidal composition comprising foamed gel containing hydrophobic silica |
| JP4870312B2 (en) * | 2000-04-27 | 2012-02-08 | ビーエイエスエフ ピーエルシー | Biocidal composition comprising a cellular gel containing hydrophobic silica |
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Legal Events
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