JPS6317804A - Insecticide - Google Patents

Abstract

PURPOSE:An insecticide that contains, as an active ingredient, 6,6-dimethyl-2- methylenebicyclo[3,1,1]heptane, which can manifest excellent insecticidal activity even with a reduced amount and sustain it for a long period of time. CONSTITUTION:The objective insecticidal agent contains, as an active ingredient, beta-pinene, namely 6,6-dimethyl-2-methylene-bicyclo[3,1,1]heptane, which boils at 164-166 deg.C (d-isomer), 162-163 deg.C (l-isomer), or 165-166 deg.C (dl-isomer) and is included in a naturally occurring essential oil of high safety. Since it is liquid at room temperature, a suitable carrier such as cardboard, woven cloth or a porous material is impregnated with beta-pinene or a gelling agent is used to solidify the pinene for application. Either beta-pinene, itself or a combination thereof with other insecticides can be used.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a novel insect repellent.

[Conventional technology]

There are many insect repellents and insecticides that have been used in the past, but unlike general agricultural and horticultural insecticides, there are not many insect repellents for clothing that are used in clothing storage furniture and containers in the home.

This is because it has low toxicity to humans and livestock, does not contaminate or damage clothing, etc., and is effective against specific soil types such as burrs.

Therefore, insect repellents that have been used for a long time, such as naphthalene, camphor, and para-dichlorobenzene, are still used in considerable quantities because of their good properties.

[Problem that the invention seeks to solve]

However, these insect repellents have low efficacy and are dispersed in a relatively short period of time, so they cannot maintain their effectiveness over a long period of time, require frequent replenishment, and therefore require a large amount of use.

It has been desired to develop a new insect repellent that is safe and effective for a long period of time with a relatively small amount.

[Means for solving problems]

As a result of various studies on compounds related to or peripheral to compounds used as insect repellents, the present inventor found that 6,6
-Dimethyl-2-methylenebicyclo[3,1゜1]heptane (hereinafter referred to as β-pinene) has a vaporizing property, and the book discovered that the vaporized gas has excellent insecticidal properties. The invention has been achieved.

β-pinene has a boiling point of 164-166℃ (d integral), 162
It is an extremely safe terpene contained in essential oils that are naturally obtained as a liquid at a temperature of ~163" CCU) and 165-166°C (dQ inclusive).

A small amount of (-)-β-pinene was placed in an IQ beaker, several burr larvae were added, the lid was covered, and the mixture was left for several days.
- Most of it was killed by the vapors escaping from the pinene.

Since β-pinene is liquid at room temperature, it is used by impregnating it into a suitable holding agent, such as cardboard, woven cloth, or porous material, or by solidifying it with a gelling agent. This is true even for β-pinene alone.
It can also be applied in combination with other insect repellents.

〔Example〕

A piece of cardboard impregnated with 1 g of the drug was placed at the bottom of a glass container with an internal volume IQ, and 10 bur larvae were placed along with the wool.
Place the head in a 0.122 glass container and heat at 20°C (75%
R, H) was left in a constant temperature and humidity bath for one week.

The test results were taken as the average of the amount of feeding damage and the number of deaths for the five tested specimens.

The test results are shown in Table 1.

Table 1 [Effects of the Invention] The β-pinene of the present invention is a strong insect repellent and has excellent insect repellent properties even in small amounts, and its effect persists for a long period of time.

Since it has properties as an insect repellent for lichens, it is expected to be an excellent insect repellent to replace conventional insect repellents.

Patent applicant Esthe Kagaku Co., Ltd. Procedural amendment (method) 1. Indication of the case 1985 Patent Application No. 7 161525 2. Title of the invention fI7 +. Relationship between the patent applicant and the applicant 1. Address: 1-4-10 Shimoai, Shinjuku-ku, Tokyo 4 Date of amendment order: September 30, 1985 (shipment date) 5. Application and specification to be amended (type engraving) 6 , The details of the amendment are as shown in the attached sheet (no changes in content).

Claims (1)

[Claims] 6,6-dimethyl-2-methylenebicyclo[3.1.1
] An insect repellent containing heptane as an active ingredient.