JPS5978105A - Repellent for noxious insect - Google Patents

Abstract

PURPOSE:A repellent for noxious insects wildly useful in kitchen of house, cookroom of hotel, etc., furniture for storage, etc., having strong repelling action on cockroaches, ants, acarids, etc., containing an alkylphenol as an active ingredient. CONSTITUTION:A repellent containing an alkylphenol shown by the formula (R<1> is 2-5C alkyl; R<2> and R<3> are H, or 2-5C alkyl) as an active ingredient. P-Ethylphenol, o-isopropyl, p-t-butylphenol, m-sec-butylphenol, p-t-amylphenol, etc. may be cited as the concrete example of the compound shown by the formula. The amount of the compound used is 0.5-1,000mg, preferably 3-500mg calculated as the active ingredient compound per 100cm<2>. In a method for use, it is processed into a various kinds of shapes such as spray, dust, granule, etc. according to a conventional procedure and used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to pest repellents. Conventionally, as a pest repellent, N,N-diethyl-m-)ylamide (hereinafter, DBF
It's called T. ) are generally widely used, but their medicinal efficacy is still unsatisfactory.

The present invention provides a compound that exhibits a repellent effect equivalent to or superior to DEBT.

The alkylphenol which is the active ingredient of the pest repellent of the present invention has the following general formula CI) 1 (wherein, R'' represents an alkyl group having a carbon atom number of -~S, and R2 and R1 are hydrogen and a carbon atom number λ~ represents an alkyl group of j).

Specific examples include mono-, di-, and tri-substituted ethyl, propyl, butyl, and amyl groups, among which p-
Preferred are alkylphenols having a monoalkyl substituent having a carbon number of G to S at the position or m-position. Specifically, p
-ethylphenol, O-isopropylphenol, m
-isopropylphenol, p-isopropylphenol, pt-butylphenol, m-8ec-butylphenol, pt-amylphenol, λ, dimethyl-At-butylphenol and the like are preferred.

The amount of these compounds used is 1 as the active ingredient compound.
00-O1S~/θooη preferably 3~soo■
It is.

It is effective against pests such as cockroaches, black ants, mosquitoes, mites, flies, burrs, and weevils, and shows particularly strong repellency against cockroaches, black ants, and mites.

The pest repellent of the present invention has a wide range of uses, including not only in general household kitchens and dining rooms, but also in the kitchens of hotels, restaurants, hospitals, etc., and in storage furniture.

These compounds can be prepared in various forms such as liquid preparations, etc. according to conventional methods.
It can be used in the form of powder, granules, etc.

Examples of carriers in the case of liquid preparations include water, alcohols such as ethyl alcohol and methyl alcohol, ketones such as acetone and methyl ethyl ketone, tetrahydrofuran,
Examples of carriers for powders and granules include ethers such as dioxane, hexane, kerosene, hydrocarbons such as benzene, and toluene. Examples of carriers for powders and granules include silicic acid, kaolin, diatomaceous earth, talc, and starch. can be mentioned.

Furthermore, the compound of the present invention may be diluted in an appropriate solvent and impregnated into and applied to wood, plastics, fibers, and waxes. Furthermore, known insecticides, fungicides, fungicides, etc. can also be combined.

The present invention will be explained in more detail below using Examples.

Example 11 Comparative Example 1 (Repellent effect on ants) Acetone solutions of various concentrations of each compound listed in Table 1 were prepared, and 2tn1. After applying it evenly and air-drying it, it was fixed to a glass plate with double-sided adhesive tape. Another sheet of P paper of the same size was prepared and fixed to the same glass plate with its long sides touching the first P paper without any treatment.

Polyvinyl chloride cup (lO~/3Cm, w,,t
After applying liquid paraffin to the inner wall by penetrating the bottom surface (/θcrnu) of The untreated filter paper and the treated filter paper were placed face down so that their areas were equal.

Ten ants were released into the cup, and the positions of the ants were investigated after a certain period of time. The results are shown in Table 7.

In addition, in this experiment, the concentration/% was 0~/yootr
This corresponds to the amount of repellent used.

Table - / /Untreated side U-treated side 3 cup inner wall field Repellent effect (Compound group Structural formula Concentration center 10 minutes Ko03θ
OOOOH/? 10 10 10/
Medium 7% Ko 1000”zHs
3 θ 00 θOH/
7 9 g A co hi I λ, 2 l / 0
3101 da OH/ A g g 93
~I Ko, 2//
θ3.2//1 0H/ 9 10 10 /θda
9 1210003 0 θ
OO ♀J / g b A
Example 5, Comparative Example λ In the same manner as in Example, a study was conducted at an even lower concentration of 0.23% (equivalent to 3 nq//00611 as a repellent), and the results shown in Table 1 were obtained. .

Example 3, Comparative Example 3 (Repellent effect on cockroaches) Acetone solutions of the compounds listed in Table 3 (active ingredients/%
) on a square (/2×/, 2crn) P paper (KoQ IIIg//kukud as a repellent).

After air drying, place a wooden shelter on top of this paper [7,A
rX10X/(height) cm]. Place a transparent box made of polyvinyl chloride over the above P paper/shelter, and place the short sides of the box in the
The building was raised using square wooden timbers to allow cockroaches to enter and exit.

Experiments were conducted in containers (yoxso x 3ocrn). The interior sides of the container were coated with butter to prevent cockroaches from escaping. In addition, solid food for mice and water were provided as food.

Place 20 adult cockroaches (10 males, 10 females) inside the container, and after a certain number of days, place them in a shelter.
The number of cockroaches inside and outside was investigated to determine the repellent effect. At the time of the investigation, cockroaches were either hiding inside the shelter or outside the box containing the shelter.

11-Table 3 12-Example 11 Comparative Example The raw material of the compound shown in Table DA was placed on a rectangular plywood board (30 x 23 cm) with bqomg (
After treating with /g/- equivalent as a repellent, apply it evenly with a cloth.

In Example 3, the method of treating P paper with an acetone solution of repellent was changed to the method of treating plywood with wax containing repellent as described above, and the number of adult cockroaches was reduced to 30 (male/!). The repellent effect was determined using the same experimental method as in Example 3, except that the sample size was r1 female/S).

Table 1 Examples, Comparative Example S (Repellent effect on Condominium mites) 0.0% of the compounds shown in Table 5. ! Apply r% acetone solution to black paper (left (
The medium used is dry yeast Epios manufactured by Asahi Beer Co., Ltd.)
Add about zy. On top of this, put cardboard paper (A
A crn), the above-mentioned repellent-treated black paper, and untreated black paper (3X 3 tM) are gently stacked one on top of the other in this order. After 2'1 hour, the number of mites on the untreated paper was investigated to determine the repellent effect. The experiment was repeated several times.

Table-5 Sender: Mitsubishi Chemical Industries, Ltd. Ri□′Boshoku Kotoku Co., Ltd. Proxy Physician's dialect W for Mibo Hasegawa - 7 others 15-

Claims (1)

[Scope of Claims] (In the formula, R1 represents an alkyl group having 2 to S carbon atoms, and R8 and R1 represent hydrogen or an alkyl group having 2 to S carbon atoms.) Pest repellent.