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JPS6311327B2 - - Google Patents
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JPS6311327B2 - - Google Patents

Info

Publication number
JPS6311327B2
JPS6311327B2 JP3809586A JP3809586A JPS6311327B2 JP S6311327 B2 JPS6311327 B2 JP S6311327B2 JP 3809586 A JP3809586 A JP 3809586A JP 3809586 A JP3809586 A JP 3809586A JP S6311327 B2 JPS6311327 B2 JP S6311327B2
Authority
JP
Japan
Prior art keywords
naphthalene
itaconic acid
insect repellent
present
insect
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
JP3809586A
Other languages
Japanese (ja)
Other versions
JPS62195305A (en
Inventor
Teiichi Aikawa
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP3809586A priority Critical patent/JPS62195305A/en
Publication of JPS62195305A publication Critical patent/JPS62195305A/en
Publication of JPS6311327B2 publication Critical patent/JPS6311327B2/ja
Granted legal-status Critical Current

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  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

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

A 産業上の利用分野 本発明は、繊維害虫に対する防虫剤に関するも
のである。さらに詳しく言えば、本発明は、比較
的高い温度においてもべとつかず、かつプラスチ
ツクや金属、塗料などに対して悪影響を与えず、
また人体に対する毒性が低く、しかも優れた防虫
力を有し、その作用の持続性が良好な防虫剤に関
するものである。 B 従来の技術 従来、羊毛、絹などの繊維の害虫防除剤とし
て、ナフタリン、シヨウノウ、パラジクロロベン
ゼンなどが通常用いられており、これらの中でナ
フタリンは、特に長期保存用の防虫剤として適し
ている。 しかしながら、ナフタリンは、イガ、ヒメカツ
オブシムシなどの繊維害虫に対する食害抑制作用
が低くて、これらの害虫の食害を受けやすいとい
う欠点を有しているため、それを補うために、ナ
フタリンの防虫効力の増強を目的とした共力剤が
種々提案されている。(特開昭53―109938号公報、
特開昭54―101425号公報、特公昭59―25761号公
報、特公昭59―43445号公報)。しかし、これらの
ナフタリンと共力剤との組合わせから成る結晶性
防虫剤は、例えば製品保管中などで、40〜50℃程
度の温度環境下に長時間おくと液化したり、ある
いは直接ポリスチレンなどのプラスチツク製品や
金属箔などに接触すると、これらを変質、変型、
変色させるなどの欠点を有している。 C 発明が解決しようとする問題点 本発明の目的は、これら従来のナフタリンに対
する共力剤がもつ欠点を克服し、比較的高い温度
においても液化することがなく、かつプラスチツ
クや金属、塗料などに対して悪影響を与えずまた
人体に対しても毒性が低くて安全に使用できる防
虫剤を提供することにある。 D 問題点を解決するための手段 本発明者は、ナフタリンと併用するための、共
力剤について種々研究を重ねた結果、ナフタリン
とイタコン酸(メチレンコハク酸)との組合わせ
が前記目的に適合しうることを見いだし、この知
見に基づいて本発明を完成するに至つた。 すなわち、本発明は、ナフタリンとイタコン酸
との組合わせを有効成分とする防虫剤を提供する
ものである。 本発明の防虫剤に用いられるイタコン酸は、融
点167〜168℃の白色結晶で、液内発酵法により工
業的に製造されている。イタコン酸の急性経口毒
性のLD50値は4000mg/Kgであり、皮膚刺激性も
なく、安全性の高い化合物である。 しかし、該イタコン酸は、今まで生物活性物質
としては全く知られていないもので、本発明は、
このように生物活性物質として全く評価されてい
ないイタコン酸をナフタリンに配合すると、ナフ
タリンの防虫効力を顕著に増加させる共力剤とし
て共力防虫効果を発揮することを見いだしたこと
に基づくものである。 ナフタリンに対するイタコン酸の最適混合割合
は、使用する容器の密閉性、大きさ、材質などに
よつて左右されるが、通常ナフタリンに対して1
〜30重量%の範囲で選ばれる。イタコン酸の蒸気
圧はナフタリンに比べて低いので、両者の組成比
は時間とともにイタコン酸の含有率が増加する傾
向があるため、イタコン酸の初期混合割合が多す
ぎると、ナフタリンが完全に蒸散したのちにイタ
コン酸が残留するので好ましくなく、また少なす
ぎると共力防虫効果が有効に発揮されない。した
がつてイタコン酸のナフタリンに対する混合割合
は、前記範囲が好ましい。 E 発明の効果 本発明の防虫剤は、ナフタリンに共力剤として
イタコン酸を組合わせたものであつて、優れた防
虫力を有し、かつその効果の持続性に優れる上
に、人体に対する毒性が低くて安全であり、さら
に従来のものと異なり、40〜50℃の比較的高温の
環境下に長期間放置しても全く液化することがな
く、その上ポリスチレンなどのプラスチツク製品
と直接接触させてもこれを変質や変型させること
がなく、また金属箔や塗料などの色調変化を起こ
すこともないなど、極めて実用的な防虫剤であ
る。 F 実施例 次に実施例により本発明をさらに詳細に説明す
る。 実施例 1 イタコン酸の粉末とナフタリンの粉末とをよく
混合して、イタコン酸の混合率が4%と20%の防
虫剤を調製した。この防虫剤各1gを採つて1
の広口ガラスびんの底におき、その上方にイガ幼
虫10頭と羊毛標準布を入れたカゴをつるす。次に
広口びんを密閉し、これを温度30℃、湿度65%の
恒温恒湿庫内に5日間放置したのち、羊毛布を取
り出して食害量を測定した。 また比較のため、ナフタリン単独のもの及びイ
タコン酸単独のものについても同様に測定した。
試験は3回繰り返して行い、食害量の平均値を求
めた。その結果を次表に示す。
A. Industrial Application Field The present invention relates to an insect repellent against textile pests. More specifically, the present invention does not become sticky even at relatively high temperatures and does not have a negative effect on plastics, metals, paints, etc.
The present invention also relates to an insect repellent that has low toxicity to the human body, has excellent insect repellent power, and has a long-lasting effect. B. Conventional technology Conventionally, naphthalene, corn, paradichlorobenzene, etc. have been commonly used as insect repellents for fibers such as wool and silk, and among these, naphthalene is particularly suitable as an insect repellent for long-term storage. . However, naphthalene has the disadvantage that it has a low effect of suppressing feeding damage to textile pests such as burs and burrs, and is susceptible to feeding damage by these pests. Various synergists have been proposed for this purpose. (Unexamined Japanese Patent Publication No. 109938/1983,
JP-A-54-101425, JP-A-59-25761, JP-A-59-43445). However, these crystalline insect repellents made of a combination of naphthalene and a synergist may liquefy if left in a temperature environment of around 40 to 50 degrees Celsius for a long period of time, for example during product storage, or may be directly exposed to polystyrene, etc. If it comes into contact with plastic products or metal foil, it may cause deterioration, deformation, or
It has disadvantages such as discoloration. C Problems to be Solved by the Invention The purpose of the present invention is to overcome the drawbacks of these conventional synergists for naphthalene, to avoid liquefaction even at relatively high temperatures, and to be suitable for plastics, metals, paints, etc. To provide an insect repellent that has no adverse effect on insects, has low toxicity to the human body, and can be used safely. D Means for Solving the Problems As a result of various studies on synergists for use in combination with naphthalene, the present inventor found that the combination of naphthalene and itaconic acid (methylene succinic acid) is suitable for the above purpose. The present invention was completed based on this finding. That is, the present invention provides an insect repellent containing a combination of naphthalene and itaconic acid as active ingredients. Itaconic acid used in the insect repellent of the present invention is a white crystal with a melting point of 167 to 168°C, and is industrially produced by a submerged fermentation method. The LD50 value for acute oral toxicity of itaconic acid is 4000 mg/Kg, and it is a highly safe compound with no skin irritation. However, itaconic acid has not been known as a biologically active substance until now, and the present invention
This is based on the discovery that when itaconic acid, which has not been evaluated at all as a biologically active substance, is added to naphthalene, it exerts a synergistic insect repellent effect as a synergist that significantly increases the insect repellent efficacy of naphthalene. . The optimal mixing ratio of itaconic acid to naphthalene depends on the sealability, size, material, etc. of the container used, but it is usually 1% to naphthalene.
~30% by weight. Since the vapor pressure of itaconic acid is lower than that of naphthalene, the content of itaconic acid tends to increase over time. Itaconic acid remains undesirably afterwards, and if it is too small, the synergistic insect repellent effect will not be effectively exhibited. Therefore, the mixing ratio of itaconic acid to naphthalene is preferably within the above range. E Effects of the Invention The insect repellent of the present invention is a combination of naphthalene and itaconic acid as a synergist, and has excellent insect repellent power and long-lasting effect, as well as toxicity to the human body. Furthermore, unlike conventional products, it does not liquefy at all even if it is left in a relatively high temperature environment of 40 to 50 degrees Celsius for a long time, and it does not come in direct contact with plastic products such as polystyrene. It is an extremely practical insect repellent, as it does not alter or deform the metal foil or paint, nor does it change the color tone of metal foil or paint. F. Examples Next, the present invention will be explained in more detail with reference to Examples. Example 1 Itaconic acid powder and naphthalene powder were thoroughly mixed to prepare insect repellents containing itaconic acid at a mixing ratio of 4% and 20%. Take 1g of each of these insect repellents.
Place the bottle at the bottom of a wide-mouthed glass bottle, and hang a basket containing 10 burr larvae and a standard wool cloth above it. Next, the wide-mouth bottle was sealed and left in a constant temperature and humidity chamber at 30°C and 65% humidity for 5 days, after which the wool was removed and the amount of feeding damage was measured. For comparison, naphthalene alone and itaconic acid alone were also measured in the same manner.
The test was repeated three times, and the average value of the amount of feeding damage was determined. The results are shown in the table below.

【表】 実施例 2 イタコン酸の粉末1gとナフタリン10gとをよ
く混合して防虫剤を調製した。この防虫剤1gを
採つて1の広口ガラスびんの底におき、その上
方にイガ幼虫10頭を入れたカゴをつるす。次に広
口びんを密閉し、これを温度30℃の恒温庫内に7
日間放置後、カゴを取り出し虫の死亡頭数を数え
た。また、比較のためにナフタリン単独のもの及
びイタコン酸単独のものについても同様に試験し
た。試験は3回繰り返して行い、その平均値を第
2表に示した。
[Table] Example 2 An insect repellent was prepared by thoroughly mixing 1 g of itaconic acid powder and 10 g of naphthalene. Take 1 g of this insect repellent and place it at the bottom of a wide-mouthed glass bottle, and hang a basket containing 10 burr larvae above it. Next, seal the wide-mouth bottle and place it in a constant temperature refrigerator at a temperature of 30℃ for 7 days.
After leaving it for a day, the basket was removed and the number of dead insects was counted. For comparison, naphthalene alone and itaconic acid alone were also tested in the same manner. The test was repeated three times and the average values are shown in Table 2.

【表】【table】

Claims (1)

【特許請求の範囲】 1 ナフタリンとイタコン酸との組合わせを有効
成分とする防虫剤。 2 ナフタリンとイタコン酸との割合が、重量比
で100:1ないし100:30の範囲にある特許請求の
範囲第1項記載の防虫剤。
[Claims] 1. An insect repellent containing a combination of naphthalene and itaconic acid as active ingredients. 2. The insect repellent according to claim 1, wherein the ratio of naphthalene to itaconic acid is in the range of 100:1 to 100:30 by weight.
JP3809586A 1986-02-21 1986-02-21 Moth-proofing agent Granted JPS62195305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3809586A JPS62195305A (en) 1986-02-21 1986-02-21 Moth-proofing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3809586A JPS62195305A (en) 1986-02-21 1986-02-21 Moth-proofing agent

Publications (2)

Publication Number Publication Date
JPS62195305A JPS62195305A (en) 1987-08-28
JPS6311327B2 true JPS6311327B2 (en) 1988-03-14

Family

ID=12515913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3809586A Granted JPS62195305A (en) 1986-02-21 1986-02-21 Moth-proofing agent

Country Status (1)

Country Link
JP (1) JPS62195305A (en)

Also Published As

Publication number Publication date
JPS62195305A (en) 1987-08-28

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term