JPS5839603A - Repellent for wool vermin - Google Patents

Abstract

PURPOSE:To provide a wool vermin repellent having excellent mothproofing effect, long durability of the effect, and high safety, at a low cost, by using a 10-11C fatty acid linear ester having a specific boiling point range such as n-actyl acetate, as an active component. CONSTITUTION:The objective wool vermin repellent can be obtained by using a 10-11C fatty acid linear ester having a boiling point of 200-230 deg.C under normal pressure (e.g. n-amyl valerate, n-decyl formate, n-nonyl acetate, etc.) as an active component. The repellent has ingestion-inhibiting activity, repelling activity and insecticidal activity to wool vermin such as clothes moth, KOIGA (Tineola bisselliela), varied carpet beetle, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a repellent for wool pests, and more specifically, it is a repellent for wool pests such as burr, 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 anti-feeding, repellent, and insecticidal activities.

Conventionally, naphthalene, camphor, baladichlorobenzene, and the like have been used as insect repellents for clothing, and among them, baladichlorobenzene is the most widely used because it has a strong insecticidal effect and is inexpensive.

However, as Balajichlorobenzene is a type of organic chlorine drug and may accumulate in living organisms and cause harm, its use is becoming regulated.
The use of organic chlorine agents aldrin and deldrin, which are used as insect repellents 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 Baladichlorobenzene. For example, an insect repellent for wool containing as an active ingredient a combination of triisopropyl-e-)lioxane or tri-tertiary-s-)lioxane and naol, anethole, menthol, cinnamaldehyde, thymol, eugenol, or a derivative thereof. (Japanese Patent Application Laid-open No. 50-24436), an insect repellent containing a cyclic compound having 10 carbon atoms and an ether bond as an active ingredient (Japanese Patent Application Laid-Open No. 110823/1982), adamantane, sublimable hydrocarbon, and sublimation Sublimation insect repellent (% 1975-12193
6), an insect repellent containing a combination of naphthalene and thymol as active ingredients (Japanese Unexamined Patent Publication No. 109938/1982)
, an insect repellent for clothing containing a combination of naphthalene and 2-isopropyl-5-methylphenol as an active ingredient (JP-A-54-32620), an insect repellent for clothing containing acetoxime as a main ingredient (JP-A-54-1988) -101425 Publication),
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-position (Japanese Unexamined Patent Publication No. 110321/1989), an aromatic compound containing -carvone as an active ingredient. Sexual insect repellent (Japanese Unexamined Patent Publication No. 19229/1983)
etc. have been proposed.

However, all of these insect repellents have disadvantages, such as being more expensive than Balajichlorobenzene, having significantly lower insect repellent effects, being highly volatile and having poor sustainability, and changing significantly over time. death,
This cannot be said to be fully satisfactory in practical terms.

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

That is, the present invention contains as an active ingredient at least one fatty acid chain ester l having a total carbon number of 10 or 11 and a boiling point in the range of 200 to 230°C under normal pressure. The present invention provides a wool pest repellent characterized by the following.

The fatty acid chain ester used in the repellent of the present invention has a total number of carbon atoms of 10 or 11 and a boiling point of 200 at normal pressure.
It is necessary that the temperature is in the range of ~2-30°C. boiling point is 2
Esters at temperatures below 00° C. are highly volatile and have poor lasting insect repellent effects, requiring constant replenishment of chemicals, which is impractical. Furthermore, if the temperature of the ester exceeds 230°C, its vapor pressure will be too low and the expected insect repellent effect will not be obtained.

This fatty acid chain ester is prepared by selecting a carboxylic acid and an alcohol from aliphatic monocarboxylic acids having 1 to 10 carbon atoms and aliphatic monohydric alcohols having 1 to 10 carbon atoms, respectively, and reducing the total number of carbon atoms to 10 or 11. It can be obtained by combining a carboxylic acid and an alcohol and esterifying them according to a conventional method.

As the aliphatic monocarboxylic acid having 1 to 10 carbon atoms, linear or side chain saturated fatty acids and unsaturated fatty acids are used, and preferred fatty acids include formic acid, acetic acid, valeric acid, isovaleric acid, and enanthoic acid. , saturated fatty acids such as caprylic acid, pelargonic acid and capric acid, and unsaturated fatty acids such as tiglic acid and angelic acid.

In addition, as an aliphatic alcohol having 1 to 10 carbon atoms,
Straight-chain or side-chain saturated alcohols and unsaturated alcohols are used, and preferred alcohols include methyl alcohol, ethyl alcohol, n-butyl alcohol, and n-butyl alcohol.
- Saturated alcohols such as amyl alcohol, isoamyl alcohol, n-hexyl alcohol, n-octyl alcohol, n-nonyl alcohol and n-decyl alcohol, and unsaturated alcohols such as allyl alcohol.

The fatty acid chain ester used in the present invention is acetic acid n
-octyl, n-amyl valerate, isoamyl tiglate, isoamyl angelica silkworm, allyl enanthate, ethyl caprylate, methyl pelargonate, n-decyl formate,
These include n-nonyl acetate, n-hexyl isovalerate, n-butyl enanthate, allyl caprylate, ethyl pelargonate, and methyl caprate.

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 can be added as desired.

The repellent of the present invention may be used as is by being sealed in a suitable container, or may be supported on a support such as silica gel, talc, 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 insects.
It is effective in exterminating woolly pests such as the Japanese bush beetle and the common Japanese bush beetle.

Next, the present invention will be explained in more detail with reference to examples.OExample: 50 μm of a fatty acid chain ester having a boiling point of 200 to 230°C and a total number of carbon atoms of 10 or 11 is placed in the bottom of a 500-volume bottle, and the 5 cIn. Upper 30 days old, average weight 30-35
■／10 burr larvae and wool standard test cloth (2c
ynX2 vice, 40~45■) was fixed in the basket
Next, the bottle was sealed and left in a constant temperature and humidity chamber at 30° C. and humidity of 65° C. 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.

Note that the values in the table are average values obtained by conducting the test 5 to 9 times. Moreover, the feeding damage rate is expressed as a percentage of the amount of feeding damage on the fabric tested as a blank test without using any chemicals. The mortality rate is the value after being left for 7 days and after being left in a natural state for 1 day.

Comparative Examples Examples with a boiling point of 200 to 230°C, total carbon number of 10 classes (1), total carbon number of 11.12 terpene esters (total), total carbon number of 12 fatty acid chain esters (I[) and total carbon number The test was conducted in exactly the same manner as in the example except that aromatic esters numbered 9 to 11 were used. The results are shown in Table 2 along with the boiling point of the ester. In addition, the feeding damage rate,
The mortality rate was determined by the same method as in the examples.

Claims (1)

[Scope of Claims] 1. A wool pest comprising as an active ingredient at least one fatty acid chain ester having a total carbon number of 10 or 11 and a boiling point in the range of 200 to 230°C under normal pressure. repellent. 2. The method according to claim 1, wherein the fatty acid chain ester is n-octyl acetate, n-amyl valerate, isoamyl tiglate, isoamyl angelate, allyl enanthate, ethyl caprylate, and methyl pelargonate. 3 Fatty acid chain ester is n-decyl formate, n-acetate
2. The method according to claim 1, wherein the organic acids are nonyl, n-hexyl isovalerate, n-butyl enanthate, allyl caprylate, ethyl pelargonate and methyl caprate.