JPS6059881B2 - Wool pest repellent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a repellent for wool pests, and more specifically, it has an anti-feeding effect and a repellent effect on wool pests such as bur moth, carp moth, Japanese carp beetle, and Japanese carp beetle. The present invention relates to a repellent containing an aliphatic chain ester as an active ingredient, which has activities such as insecticidal and insecticidal activities.

Conventionally, naphthalene, sagebrush, paradichlorobenzene, and the like have been used as insect repellents for clothing, and among them, paradichlorobenzene is the most widely used because it has a strong insecticidal effect and is inexpensive. However, paradichlorobenzene is a type of organic chlorine drug and has the potential to accumulate in living organisms and cause harm.
There is a trend toward regulation of their use, and the use of organic chlorine agents aldrin and deldrin, which are insect repellent treatment agents for textile processing, is already prohibited. Therefore, in recent years, many compounds or combinations thereof have been proposed as insect repellents or repellents to replace paradichlorobenzene.

For example, insect repellents for wool containing as active ingredients a combination of triisopropyl-s-trioxane or tri-Ξ-butyl-s-trioxane and realol, anethole, menthol, cinnamaldehyde, thymol, eugenol, or derivatives thereof (Unexamined Japanese Patent Publication No. Publication No. 50-24436),
An insect repellent containing as an active ingredient a cyclic compound having an ether bond and having m carbon atoms (Japanese Patent Application Laid-open No. 110823/1982);
A sublimable insect repellent containing adamantane, a sublimable hydrocarbon, and a sublimable or volatile polar compound (Japanese Unexamined Patent Publication No. 121936/1983), an insect repellent containing a combination of naphthalene and thymol as active ingredients. Agent (Unexamined Japanese Patent Publication No. 53-1
No. 09938), an insect repellent for clothing containing a combination of naphthalene and 2-isopropyl-5-methylphenol as an active ingredient (Japanese Unexamined Patent Publication No. 3262/1983), an insect repellent for clothing containing acetoxime as a main component ( JP-A-54-101
No. 425), an insect repellent containing as an active ingredient an aromatic compound having a substituent such as a carbon chain having a branch at the α-1 position (Japanese Patent Application Laid-open No. 110321/1983), which is effective against 1-carvone. Aromatic insect repellent as an ingredient (JP-A-55-1
No. 924), etc. have been proposed. However, all of these insect repellents have disadvantages, such as being more expensive than paradichlorobenzene, having significantly lower insect repellent effects, being highly volatile and having poor persistence, and changing significantly over time. However, it cannot be said to be fully satisfactory in practical terms.

In view of these circumstances, the present inventors have conducted extensive research to develop a practical insect repellent that is inexpensive, has excellent insect repellent effects, has long-lasting effects, and is highly safe. The inventors have discovered that the objective can be achieved by using a certain type of fatty acid chain ester having 10 or 11 carbon atoms as an active ingredient, and based on this knowledge, they have completed the present invention.

That is, the present invention provides n-decyl formate, n-octyl acetate, n-nonyl acetate, n-amyl valerate, isoamyl tiglate, isoamyl angelate, allyl nandoate, ethyl hydroxyfurylate, allyl hydroxyfuryrate, The present invention provides a repellent for wool pests containing as an active ingredient at least one fatty acid ester selected from methyl pelargonate and methyl purinate.

In general, repellents with a boiling point of less than 200°C under normal pressure are highly volatile and have a poor long-lasting insect repellent effect, requiring constant replenishment, while those with a boiling point of over 230°C have a low vapor pressure. Although the above fatty acid ester used in the present invention has a boiling point in the range of 200 to 230°C, it is suitable.

In the repellent of the present invention, the above esters may be used alone or in combination of two or more.

Furthermore, additives such as fragrances may be added as desired. The repellent of the present invention may be used as it is by being sealed in a suitable container, or may be used by silica gel, talc, etc.
It can also be used by supporting it on a support such as cloth or paper.

The repellent of the present invention is inexpensive, has an excellent insect repellent effect, has a long-lasting effect, and is a highly safe and practical repellent for wool insects.・Effective in exterminating wool pests such as the woolly beetle.

Next, the present invention will be explained in more detail with reference to Examples.

Example 50 ml of the fatty acid esters shown in the compound column of Table 1 was placed at the bottom of a bottle with a capacity of 500 TrLt, and 3
0 days old, average weight 30-35m9/10 burr larvae 1
0 head and wool standard test cloth (2d x 2cm 140-45m9
) was fixed.

Next, the bottle was sealed and left in a constant temperature and humidity room at 30°C and 65% humidity for 7 days, after which the wool was removed, the amount of feeding damage was measured, and the number of dead insects was counted. The surviving insects were left in their natural state for another day, and the number of dead insects was counted again to determine the mortality rate. The results are shown in Table 1 along with the boiling point of the ester. In addition,
The values in the table are average values obtained by conducting the test 5 to 9 times. In addition, the feeding damage rate is expressed as a percentage of the amount of feeding damage on the fabric tested using the chemical as a blank test. The mortality rate is the value after being left for 7 days and then left for 1 day in a natural state. Fatty acid chain esters with a total carbon number of 10 (1), terpene esters with a total carbon number of 11 or 12 (■), fatty acid chain esters with a total carbon number of 12 (■) at a temperature of 200°C or less
The test was conducted in exactly the same manner as in the example except that aromatic esters having a total of 9 to 11 carbon atoms (■) were used.
The results are shown in Table 2 along with the boiling point of the ester. Note that the feeding damage rate and mortality rate were determined by the same method as in the examples.

Claims (1)

[Claims] 1 n-decyl formate, n-octyl acetate, n-nonyl acetate, n-amyl valerate, isoamyl tiglate, isoamyl angelate, allyl enanthate, ethyl caprylate, allyl caprylate, methyl pelargonate, and methyl caprate. A wool pest repellent containing at least one selected fatty acid ester as an active ingredient.