JP3745432B2 - Pest repellent - Google Patents

Pest repellent Download PDF

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Publication number
JP3745432B2
JP3745432B2 JP01576196A JP1576196A JP3745432B2 JP 3745432 B2 JP3745432 B2 JP 3745432B2 JP 01576196 A JP01576196 A JP 01576196A JP 1576196 A JP1576196 A JP 1576196A JP 3745432 B2 JP3745432 B2 JP 3745432B2
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Japan
Prior art keywords
repellent
cockroaches
heat
sample
phenoxybenzyl
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JP01576196A
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Japanese (ja)
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JPH09208410A (en
Inventor
冨岡  敏一
西野  敦
豊 弘中
勇 新田
達栄 伊藤
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Earth Corp
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Earth Chemical Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、ゴキブリなどの不快・衛生害虫忌避を目的とする忌避剤に関するものである。
【0002】
【従来の技術】
家庭内、特に台所で使用する機器は、ゴキブリを始めとする不快害虫あるいは衛生害虫の侵入により大きな被害を被る場合がある。ゴキブリは、餌により誘引されるばかりでなく、熱にも誘引される。代表的なチャバネゴキブリの集合至適温度は27±5℃である。台所にある調理用をはじめとする電化製品は、内部に食品くずが残るなどゴキブリの誘引物質があり、さらに内部に発熱部を有するかあるいは保温・蓄熱機能を有するため、不快害虫の誘引至適温度となっている。特に、これら家電製品の底部と床面には1cm前後の間隙が設けられ、物の陰に隠れようという性質を有するゴキブリの生息環境を作っている。また、機器は完全密閉にしようとしても、放熱部や開閉部などがあるから、完全な密閉構造を取りにくい。
そこで、ゴキブリを始めとする不快害虫あるいは衛生害虫の機器への侵入を防止するため、各種の忌避剤が提案されている。
【0003】
【発明が解決しようとする課題】
しかし、熱による誘引に対して十分な忌避効果があり、しかも機器の発熱部付近に設置しても長期間忌避効果を発揮する忌避剤は得られていない。また、殺虫作用の強い薬剤であると、機器内に侵入した害虫が死骸として残存し、不衛生である。
そこで、熱による誘引に対して忌避効果があり、かつ薬剤に短時間触れても殺虫作用の少ない薬剤が要望されていた。
本発明は、そのような要望に応える害虫忌避剤を提供することを目的とする。
【0004】
【課題を解決するための手段】
本発明の家電機器内部の害虫忌避剤は、α−シアノ−3−フェノキシベンジルクリサンテマート、2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジル、o−フェニルフェノール、およびp−t−オクチルフェノールを有効成分とする。
これら有効成分の混合割合は、α−シアノ−3−フェノキシベンジルクリサンテマートが1〜50重量%、2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジルが1〜80重量%、o−フェニルフェノールが1〜70重量%、p−t−オクチルフェノールが1〜70重量%の範囲が適当である。
【0005】
本発明の忌避剤に用いるα−シアノ−3−フェノキシベンジルクリサンテマートおよび2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジルは、ゴキブリに対しては接触により忌避効果を発揮する。室温では揮散性が殆どないから持続期間が長い。o−フェニルフェノールは、室温では揮散性を有し、接触による忌避および揮散した気体の嗅覚刺激による忌避の双方に効果を有する。また、p−t−オクチルフェノールは、室温では幾分の揮散性を有し、接触による忌避および揮散した気体の嗅覚刺激による忌避の双方に効果を有する。
【0006】
本発明の忌避剤は、上記有効成分の組み合わせにより、ゴキブリに対して接触忌避および揮散した気体の嗅覚刺激による忌避の双方に効果を有するばかりでなく、熱誘引に対する忌避効果をも有し、しかも機器の発熱部付近に設置しても長期間忌避効果を発揮する。また、ゴキブリに対して毒性が比較的低いので、死亡させるに至らず、機器内に死骸を残すことなく不潔感を生じさせない。さらに、蒸気圧が比較的低いので、異臭感を与えず、生活空間に設置する家電機器への適用が可能である
【0007】
【発明の実施の形態】
本発明の忌避剤の上記有効成分は、室温において、組み合わせにより固体から液体までの状態であり、これらの混合物をそのままゴキブリ忌避の要求される区域等に適用することができるが、通常好ましくは適当な担体、その他の配合剤を用いて適用区域、適用方法等に適した各種の形態、例えば液剤、固剤等に調製して利用される。液剤の形態に調製するに当たり用いられる担体としては、例えばメチルアルコール、エチルアルコール等のアルコール類、アセトン等のケトン類、ケロシン、パラフィン、石油ベンジン等の脂肪族炭化水素類、ベンゼン、トルエン等の芳香族炭化水素類等を例示できる。また、固剤の形態に調製するに当たり用いられる担体としては、例えばケイ酸、カオリン、活性炭、ベントナイト、珪藻土、タルク、クレー、炭酸カルシウム、陶磁器粉等の鉱物質粉末や、木粉、大豆粉、小麦粉、でん粉等の植物質粉末やシクロデキストリン等の包接化合物等を例示できる。
ただし、上記の有効成分の量は、忌避剤を適用する部位または基材の面積100cm2当たりα−シアノ−3−フェノキシベンジルクリサンテマートを0.5〜15mg、2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジルを0.5〜30mg、o−フェニルフェノールを1〜10mg、p−t−オクチルフェノールを2〜20mgとすることにより、優れた忌避効果が得られる。なかでも、α−シアノ−3−フェノキシベンジルクリサンテマートを2〜10mg、2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジルを5〜20mg、o−フェニルフェノールを2〜15mg、p−t−オクチルフェノールを4〜20mgとなるように混合したもので最も優れた忌避性能が得られた。
【0008】
【実施例】
以下、本発明の実施例について説明する。
《実施例1》
α−シアノ−3−フェノキシベンジルクリサンテマート、2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジル、o−フェニルフェノール、およびp−t−オクチルフェノールの混合比率を変えて、大きさ10×10cmのNo.2の濾紙に塗工し、忌避剤試料とした。そして、チャバネゴキブリに対する接触忌避性および熱誘引忌避性等について評価した。
【0009】
まず、接触忌避性については、法面に逃亡防止処理を施した大きさ100×100cmの箱内に、忌避剤で処理をしていない濾紙(A)、上記の忌避剤試料(B)、および上記の忌避剤試料の上にこれを覆う大きさのポリエステル製メッシュを積層したもの(C)をそれぞれ離して設置し、それらの上に餌として約6gの角砂糖をのせ、ゴキブリ雌雄各100匹ずつを放し、2日後の餌の減少量を調べた。そして、減少量の比較に基づき以下の基準で接触忌避性を表した。
【0010】
[接触忌避性の評価基準]
◎:試料AおよびCにおける減少量がほぼ同じで、Aの減少量とBの減少量の比A/Bが15以上、○:同じくA/Bが3以上15未満、×:同じくA/Bが3未満、または試料BおよびCにおける減少量がほぼ同じ。
【0011】
持続性については、上記の忌避剤試料(B)の初期効果を確認した後、これを40℃の雰囲気に2カ月間放置した。この試料をB’とし、忌避剤で処理をしていない濾紙(A)とともに前記と同様の箱内に設置し、同様の試験をした。
【0012】
[持続性の評価基準]
◎:試料Aの減少量とB’の減少量の比A/B’が15以上、○:同じくA/B’が3以上15未満、×:同じくA/Bが3未満。
【0013】
熱誘引忌避性については、大きさ50×50cmの箱内に、右半分中央には上記の忌避剤試料(B)を配置し、その中央に27±5℃に制御されたヒーターをのせる。一方、箱の左半分中央には忌避剤で処理をしていない濾紙(A)を配置し、その中央に27±5℃に制御されたヒーターをのせる。この箱内にチャバネゴキブリ雌雄各100匹ずつを放し、試料AまたはBに侵入するゴキブリの個体数を24時間のビデオテープレコーダーの記録から計数した。
【0014】
[熱誘引忌避性の評価基準]
◎:試料Aへ侵入した個体数と試料Bへ侵入した個体数の比A/Bが50以上、○:同じくA/Bが5以上50未満、×:同じくA/Bが5未満。
【0015】
生存率については、忌避剤試料(B)のみを設置した箱を用いた上記と同様の接触忌避試験によるゴキブリの死亡した個体数の割合で表した。
これらの結果を表1に示す。
【0016】
【表1】

Figure 0003745432
【0017】
《実施例2》
表2に本発明の忌避剤の幾つかの好ましい処方例を示す。
【0018】
【表2】
Figure 0003745432
【0019】
【発明の効果】
以上のように本発明の忌避剤は、ゴキブリに対して有効な忌避効果を発揮するとともに、熱誘引に対しても忌避効果を有し、しかも機器の発熱部付近に設置しても長期間忌避効果を発揮する。従って、特に家電機器にゴキブリ忌避機能を付与するのに有効である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a repellent aimed at repelling unpleasant / hygienic pests such as cockroaches.
[0002]
[Prior art]
Devices used in the home, particularly in the kitchen, may be greatly damaged by the invasion of unpleasant or sanitary pests such as cockroaches. Cockroaches are attracted not only by food but also by heat. The typical temperature of typical German cockroaches is 27 ± 5 ° C. Electrical appliances such as those used for cooking in the kitchen have cockroach attractants such as food waste left inside, and also have a heat generating part inside or have a heat retaining and heat storage function, so it is suitable for attracting unpleasant pests It is temperature. In particular, a gap of about 1 cm is provided between the bottom and the floor of these home appliances, creating a habitat for cockroaches that have the property of being hidden behind objects. In addition, even if the device is to be completely sealed, it is difficult to obtain a completely sealed structure because there are a heat radiating portion and an opening / closing portion.
Therefore, various repellents have been proposed in order to prevent the entry of unpleasant pests such as cockroaches or sanitary pests into the equipment.
[0003]
[Problems to be solved by the invention]
However, a repellent that has a sufficient repellent effect against the attraction by heat and that exhibits a long-term repellent effect even when installed near the heat generating part of the device has not been obtained. In addition, if the drug has a strong insecticidal action, pests that have entered the device remain as dead bodies and are unsanitary.
Accordingly, there has been a demand for a drug that has a repellent effect on the attraction by heat and has a small insecticidal action even when it is touched for a short time.
An object of this invention is to provide the insect repellent which responds to such a request.
[0004]
[Means for Solving the Problems]
The pest repellent inside the home electric appliance of the present invention includes α-cyano-3-phenoxybenzylchrysanthemate, 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl, o-phenylphenol, and p -T-octylphenol as an active ingredient.
The mixing ratio of these active ingredients is 1 to 50% by weight of α-cyano-3-phenoxybenzyl chrysanthemate, 1 to 80% by weight of 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl. A range of 1 to 70% by weight of o-phenylphenol and 1 to 70% by weight of pt-octylphenol is suitable.
[0005]
Α-Cyano-3-phenoxybenzylchrysantemate and 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl used in the repellent of the present invention exert a repellent effect upon contact with cockroaches To do. Long duration because there is little volatility at room temperature. o-Phenylphenol has volatility at room temperature and is effective in both repelling by contact and repelling by olfactory stimulation of the vaporized gas. In addition, pt-octylphenol has some volatility at room temperature, and is effective in both repelling by contact and repelling by olfactory stimulation of vaporized gas.
[0006]
The repellent of the present invention is effective not only for contact repellent to cockroaches and repellent by olfactory stimulation of vaporized gas by the combination of the above active ingredients, but also has a repellent effect on heat attraction, Even if it is installed near the heat generating part of the device, it exhibits repellent effect for a long time. In addition, since it is relatively low in toxicity to cockroaches, it does not lead to death and does not leave a dead body in the device and does not create a filthy sensation. Furthermore, since the vapor pressure is relatively low, it can be applied to home appliances installed in a living space without giving off a strange odor.
DETAILED DESCRIPTION OF THE INVENTION
The active ingredient of the repellent of the present invention is in a state of solid to liquid depending on the combination at room temperature, and a mixture of these can be applied as it is to an area where cockroach repellent is required. Various carriers and other compounding agents are used to prepare various forms suitable for application areas, application methods, etc., for example, liquids, solids and the like. Examples of the carrier used in preparing the liquid form include alcohols such as methyl alcohol and ethyl alcohol, ketones such as acetone, aliphatic hydrocarbons such as kerosene, paraffin, and petroleum benzine, and aromatics such as benzene and toluene. Group hydrocarbons and the like. In addition, as a carrier used for preparing in the form of solid agent, for example, mineral powder such as silicic acid, kaolin, activated carbon, bentonite, diatomaceous earth, talc, clay, calcium carbonate, ceramic powder, wood powder, soybean powder, Examples include vegetable powders such as wheat flour and starch, and inclusion compounds such as cyclodextrin.
However, the amount of the active ingredient is 0.5 to 15 mg of α-cyano-3-phenoxybenzylchrysanthemate per 100 cm 2 of the site to which the repellent is applied or the area of the substrate, and 2- (4-ethoxyphenyl) An excellent repellent effect can be obtained by adjusting 0.5 to 30 mg of 2-methylpropyl-3-phenoxybenzyl, 1 to 10 mg of o-phenylphenol, and 2 to 20 mg of pt-octylphenol. Among them, 2 to 10 mg of α-cyano-3-phenoxybenzylchrysanthemate, 5 to 20 mg of 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl, and 2 to 15 mg of o-phenylphenol The best repellent performance was obtained by mixing 4 to 20 mg of pt-octylphenol.
[0008]
【Example】
Examples of the present invention will be described below.
Example 1
By changing the mixing ratio of α-cyano-3-phenoxybenzylchrysanthemate, 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl, o-phenylphenol, and pt-octylphenol, No. 10 × 10 cm It applied to the filter paper of No. 2, and made a repellent sample. Then, contact repellency and heat induction repellency against German cockroaches were evaluated.
[0009]
First, for contact repellency, a filter paper (A) that has not been treated with a repellent, a repellent sample (B) as described above, in a 100 × 100 cm box having a slope that has undergone escape prevention treatment, and Laminated polyester meshes (C) that are large enough to cover the above repellent sample are placed separately, and about 6 g of sugar cubes are placed on them as a bait, and 100 cockroach males and females each. The amount of food decrease after 2 days was examined. The contact repellency was expressed by the following criteria based on the comparison of the reduction amount.
[0010]
[Evaluation criteria for contact repellency]
A: The amount of decrease in Samples A and C is substantially the same, the ratio A / B of the amount of A decreased to the amount of B decreased is 15 or more, ○: A / B is 3 or more and less than 15, X: Also A / B Is less than 3, or the decrease in samples B and C is approximately the same.
[0011]
Regarding durability, after confirming the initial effect of the repellent sample (B), it was left in an atmosphere of 40 ° C. for 2 months. This sample was designated as B ′, and was placed in the same box as above together with the filter paper (A) not treated with the repellent, and the same test was performed.
[0012]
[Evaluation criteria for sustainability]
A: Ratio A / B ′ of the decrease amount of sample A to the decrease amount of B ′ is 15 or more, ○: A / B ′ is also 3 or more and less than 15, and X: A / B is also less than 3.
[0013]
For heat-induced repellent, the above repellent sample (B) is placed in the center of the right half in a 50 × 50 cm size box, and a heater controlled at 27 ± 5 ° C. is placed in the center. On the other hand, filter paper (A) not treated with repellent is placed in the center of the left half of the box, and a heater controlled at 27 ± 5 ° C. is placed in the center. 100 male and female cockroaches were released into the box, and the number of cockroaches invading Sample A or B was counted from a 24-hour video tape recorder record.
[0014]
[Evaluation criteria for heat repellent repellency]
A: Ratio of the number of individuals invading sample A to the number of individuals invading sample B A / B is 50 or more, ◯: A / B is 5 or more and less than 50, ×: A / B is also less than 5.
[0015]
The survival rate was expressed as a ratio of the number of dead cockroaches in the contact repellent test similar to the above using a box in which only the repellent sample (B) was installed.
These results are shown in Table 1.
[0016]
[Table 1]
Figure 0003745432
[0017]
Example 2
Table 2 shows some preferred formulation examples of the repellent of the present invention.
[0018]
[Table 2]
Figure 0003745432
[0019]
【The invention's effect】
As described above, the repellent of the present invention exerts an effective repellent effect on cockroaches, has a repellent effect on heat attraction, and is repelled for a long time even when installed near the heat generating part of the device. Demonstrate the effect. Therefore, it is particularly effective for imparting a cockroach repelling function to home appliances.

Claims (2)

α−シアノ−3−フェノキシベンジルクリサンテマート、2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジル、o−フェニルフェノール、およびp−t−オクチルフェノールを有効成分とする家電機器内部の害虫忌避剤。 Household appliances containing α-cyano-3-phenoxybenzylchrysanthemate, 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl, o-phenylphenol, and pt-octylphenol as active ingredients of pest repellents. 1〜50重量%のα−シアノ−3−フェノキシベンジルクリサンテマート、1〜80重量%の2−(4−エトキシフェニル)−2−メチルプロピルー3−フェノキシベンジル、1〜70重量%のo−フェニルフェノール、および1〜70重量%のp−t−オクチルフェノールからなる家電機器内部の害虫忌避剤。1-50 wt% α-cyano-3-phenoxybenzylchrysanthemate, 1-80 wt% 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl, 1-70 wt% o -A pest repellent inside a home appliance comprising phenylphenol and 1-70 wt% pt-octylphenol.
JP01576196A 1996-01-31 1996-01-31 Pest repellent Expired - Fee Related JP3745432B2 (en)

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