【発明の詳細な説明】[Detailed description of the invention]
本発明は防虫剤組成物に関す。
揮散性防虫剤の有効成分を長期間保持するため
には防虫効果を発揮し得る有効最少量の揮散状態
を維持させることが好ましい。このために従来か
ら採用されて来た方法は、不揮発性若しくは揮発
性の担体に防虫剤を担持させる方法が知られてい
る。また揮散性防虫剤の揮散を抑制する方法とし
てゲル化剤によりゼリー状とする方法、樹脂性物
質に混練して担持させる方法、他の昇華性物質を
併用する方法、セロフアンや和紙等にて包装する
方法等が実用化されている。しかし乍らこの様な
方法では充分に満足のいく効果を期待出来ない。
揮散性防虫剤を非親水性物質である動植物系物質
たとえばロウ、ステアリン酸、ラウリン酸、石油
系物質たとえば固形パラフイン等と共存させた場
合、揮散性防虫剤の保留効果を得ることが出来
る。この場合でも長期間の恒常的揮散特性を得る
ことは極めて困難であり、一般的には初期の揮散
量が多く時間の経過と共に揮散量の減少をきた
す。
本発明者は上記難点に注目し、長期間恒常的に
安定した揮散特性を発揮し得る防虫剤組成物を開
発すべく研究を続けて来た結果、揮散性防虫剤と
アルコール類とを併用するときは所期の目的を達
成出来ることを見出し、茲に本発明を完成するに
至つた。即ち本発明は樟脳、イソサフロールおよ
びＮ，Ｎ−ジエチルトルアミドから選ばれた防虫
剤とポリエチレングリコール又はポリプロピレン
グリコールとを重量比95対５乃至40対60にて配合
して成る防虫剤組成物に係るものである。
本発明に於いて使用される揮散性防虫剤として
は、樟脳、イソサフロールおよびＮ，Ｎ−ジエチ
ルトルアミドが挙げられ、ポリエチレングリコー
ル又はポリプロピレングリコールとを併用する。
又、その使用割合を、重量比95対５乃至40対60の
範囲とする。
本発明組成物は樟脳、イソサフロールおよび
Ｎ，Ｎ−ジエチルトルアミドから選ばれた防虫剤
とポリエチレングリコール又はポリプロピレング
リコールとを所定の割合で含有する限り各種の形
態を採り得られ、たとえば溶液、乳化液、半固
体、固体等各種の形態に必要に応じて各種助剤や
溶媒を併用して調製される。
以下に実施例及び比較例を示して本発明の特徴
とする所をより明瞭となす。
実施例 １
直径50mmのガラス製円筒容器に、樟脳９重量部
及びポリエチレングリコール（分子量4000）１重
量部の割合で10ｇを採り、加熱溶解後冷却し、25
℃に温度制御された大気中に放置し経日的に揮散
量を測定した。結果を第１表に示す。
実施例 ２
直径50mmのガラス製円筒容器に、樟脳９重量部
及びポリエチレングリコール（分子量600）１重
量部の割合で10ｇを採り、加熱溶解後冷却し、25
℃に温度制御された大気中に放置し経日的に揮散
量を測定した。結果を第１表に示す。
比較例 １
直径50mmのガラス製円筒容器に、樟脳９ｇを採
り、加熱溶解後冷却し、25℃に温度制御された大
気中に放置し経日的に揮散量を測定した。結果を
第１表に示す。
比較例 ２
直径50mmのガラス製円筒容器に、樟脳９重量部
及びパラフインワツクス（融点155〓）１重量部
の割合で10ｇを採り、加熱溶解後冷却し、25℃に
温度制御された大気中に放置し経日的に揮散量を
測定した。結果を第１表に示す。
The present invention relates to insect repellent compositions. In order to retain the active ingredients of a volatile insect repellent for a long period of time, it is preferable to maintain the minimum amount of volatile insect repellent that can exert an insect repellent effect. As a conventional method for this purpose, a method is known in which an insect repellent is supported on a nonvolatile or volatile carrier. In addition, methods for suppressing the volatilization of volatile insect repellents include making them into a jelly using a gelling agent, kneading them into a resinous substance and supporting them, using other sublimable substances in combination, and packaging them in cellophane, Japanese paper, etc. Methods to do so have been put into practical use. However, it is not possible to expect a fully satisfactory effect with such a method.
When a volatile insect repellent is allowed to coexist with a non-hydrophilic animal or plant material, such as wax, stearic acid, lauric acid, or a petroleum-based substance, such as solid paraffin, the retention effect of the volatile insect repellent can be obtained. Even in this case, it is extremely difficult to obtain constant volatilization characteristics over a long period of time, and generally the initial volatilization amount is large and the volatilization amount decreases over time. The present inventor has focused on the above-mentioned difficulties and has continued research to develop an insect repellent composition that can consistently exhibit stable volatilization properties over a long period of time. At that time, they discovered that the intended purpose could be achieved, and finally completed the present invention. That is, the present invention provides an insect repellent composition comprising an insect repellent selected from camphor, isosafrole, and N,N-diethyltoluamide and polyethylene glycol or polypropylene glycol in a weight ratio of 95:5 to 40:60. This is related. Volatile insect repellents used in the present invention include camphor, isosafrole and N,N-diethyltoluamide, which are used in combination with polyethylene glycol or polypropylene glycol.
Further, the proportion used is in the range of 95:5 to 40:60 by weight. The composition of the present invention can take various forms as long as it contains an insect repellent selected from camphor, isosafrole, and N,N-diethyltoluamide and polyethylene glycol or polypropylene glycol in a predetermined ratio, such as a solution, an emulsion, etc. It is prepared in various forms such as liquid, semi-solid, and solid by using various auxiliaries and solvents as necessary. Examples and comparative examples are shown below to make the features of the present invention more clear. Example 1 10 g of 9 parts by weight of camphor and 1 part by weight of polyethylene glycol (molecular weight 4000) was placed in a glass cylindrical container with a diameter of 50 mm, heated and dissolved, and then cooled.
The sample was left in an atmosphere whose temperature was controlled at ℃, and the amount of volatilization was measured over time. The results are shown in Table 1. Example 2 10 g of 9 parts by weight of camphor and 1 part by weight of polyethylene glycol (molecular weight 600) was placed in a glass cylindrical container with a diameter of 50 mm, heated and dissolved, and then cooled to give 25
The sample was left in an atmosphere whose temperature was controlled at ℃, and the amount of volatilization was measured over time. The results are shown in Table 1. Comparative Example 1 9 g of camphor was placed in a glass cylindrical container with a diameter of 50 mm, heated and dissolved, cooled, and left in the atmosphere at a temperature controlled at 25° C., and the amount of volatilization was measured over time. The results are shown in Table 1. Comparative Example 2 10g of 9 parts by weight of camphor and 1 part by weight of paraffin wax (melting point 155〓) were placed in a glass cylindrical container with a diameter of 50 mm, heated and dissolved, cooled, and placed in the air at a temperature controlled at 25°C. The amount of volatilization was measured over time. The results are shown in Table 1.
【表】
実施例 ３
直径50mmのガラス製円筒容器に、イソサフロー
ル９重量部及びポリエチレングリコール（分子量
200）１重量部の割合で10ｇを採り、混合よく撹
拌し、25℃に温度制御された大気中に放置し経日
的に揮散量を測定した。結果を第２表に示す。
実施例 ４
直径50mmのガラス製円筒容器に、イソサフロー
ル９重量部及びポリエチレングリコール（分子量
4000）１重量部の割合で10ｇを採り、加熱溶解後
冷却し、25℃に温度制御された大気中に放置し経
日的に揮散量を測定した。結果を第２表に示す。
比較例 ３
直径50mmのガラス製円筒容器に、イソサフロー
ル９ｇを採り、25℃に温度制御された大気中に放
置し経日的に揮散量を測定した。結果を第２表に
示す。
比較例 ４
直径50mmのガラス製円筒容器にイソサフロール
９重量部及びパラフインワツクス（融点155〓）
１重量部の割合で10ｇを採り、加熱溶解後冷却
し、25℃に温度制御された大気中に放置し経日的
に揮散量を測定した。結果を第２表に示す。[Table] Example 3 In a glass cylindrical container with a diameter of 50 mm, 9 parts by weight of isosafrole and polyethylene glycol (molecular weight
200) 10 g of 1 part by weight was taken, mixed thoroughly, and left in the atmosphere at a temperature controlled at 25° C., and the amount of volatilization was measured over time. The results are shown in Table 2. Example 4 In a glass cylindrical container with a diameter of 50 mm, 9 parts by weight of isosafrole and polyethylene glycol (molecular weight
4000) was taken at a ratio of 1 part by weight, and after heating and dissolving, it was cooled and left in the atmosphere at a temperature controlled at 25°C, and the amount of volatilization was measured over time. The results are shown in Table 2. Comparative Example 3 9 g of isosafrole was placed in a glass cylindrical container with a diameter of 50 mm, and the container was left in the atmosphere at a temperature of 25° C., and the amount of volatilization was measured over time. The results are shown in Table 2. Comparative Example 4 9 parts by weight of isosafrole and paraffin wax (melting point 155〓) in a glass cylindrical container with a diameter of 50 mm
10 g of the solution was taken at a ratio of 1 part by weight, heated and dissolved, cooled, and left in the atmosphere at a temperature controlled at 25° C., and the amount of volatilization was measured over time. The results are shown in Table 2.
【表】
実施例 ５
直径50mmのガラス製円筒容器に、Ｎ，Ｎ−ジエ
チルトルアミド９重量部、界面活性剤（エマルゲ
ン404）３重量部及びポリエチレングリコール
（分子量200）３重量部の割合で15ｇを採り、これ
をよく混合撹拌しつつ水15ｇを加え、全量30ｇの
乳化液とした。これを35℃、73％RHに温湿度制
御された雰囲気中に放置し、経日的に揮散量を測
定した。結果を第３表に示す。
実施例 ６
直径50mmのガラス製円筒容器に、Ｎ，Ｎ−ジエ
チルトルアミド９重量部、界面活性剤（エマルゲ
ン404）３重量部及びポリプロピレングリコール
（分子量700）３重量部の割合で15ｇを採り、これ
をよく混合撹拌しつつ水15ｇを加え、全量を30ｇ
の乳化液とした。これを35℃、73％RHに温湿度
制御された雰囲気中に放置し、経日的に揮散量を
測定した。結果を第３表に示す。
比較例 ５
直径50mmのガラス製円筒容器に、Ｎ，Ｎ−ジエ
チルトルアミド９ｇを採り、これを35℃、73％
RHに温湿度制御された雰囲気中に放置し、経日
的に揮散量を測定した。結果を第３表に示す。
比較例 ６
直径50mmのガラス製円筒容器に、Ｎ，Ｎ−ジエ
チルトルアミド９重量部、界面活性剤（エマルゲ
ン404）３重量部及び流動パラフイン３重量部の
割合で15ｇを採り、これをよく混合撹拌しつつ水
15ｇを加え、全量30ｇの乳化液とした。これを35
℃、73％RHに温湿度制御された雰囲気中に放置
し、経日的に揮散量を測定した。結果を第３表に
示す。[Table] Example 5 15 g of 9 parts by weight of N,N-diethyltoluamide, 3 parts by weight of surfactant (Emulgen 404) and 3 parts by weight of polyethylene glycol (molecular weight 200) were placed in a glass cylindrical container with a diameter of 50 mm. 15 g of water was added thereto while thoroughly mixing and stirring to make an emulsion with a total amount of 30 g. This was left in an atmosphere with temperature and humidity controlled at 35°C and 73% RH, and the amount of volatilization was measured over time. The results are shown in Table 3. Example 6 In a glass cylindrical container with a diameter of 50 mm, 15 g of N,N-diethyltoluamide, 3 parts by weight of a surfactant (Emulgen 404), and 3 parts by weight of polypropylene glycol (molecular weight 700) were taken, Mix this well and add 15g of water, making the total amount 30g.
It was made into an emulsion. This was left in an atmosphere with temperature and humidity controlled at 35°C and 73% RH, and the amount of volatilization was measured over time. The results are shown in Table 3. Comparative Example 5 9 g of N,N-diethyltoluamide was placed in a glass cylindrical container with a diameter of 50 mm, and this was heated to 73% at 35°C.
It was left in an atmosphere with temperature and humidity controlled to RH, and the amount of volatilization was measured over time. The results are shown in Table 3. Comparative Example 6 In a glass cylindrical container with a diameter of 50 mm, 15 g of 9 parts by weight of N,N-diethyltoluamide, 3 parts by weight of a surfactant (Emulgen 404), and 3 parts by weight of liquid paraffin were placed and mixed well. water while stirring
15g was added to make an emulsion with a total amount of 30g. This is 35
It was left in an atmosphere with temperature and humidity controlled at 73% RH and the amount of volatilization was measured over time. The results are shown in Table 3.
【表】【table】