JPH09208409A - Pest repellent - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a drug having an effect of repelling attraction by heat and having a small insecticidal action even when the drug is touched for a short time. SOLUTION: An insect pest repellent containing α-cyano-3-phenoxybenzyl chrysanthemate, 1-ethynyl-2-methyl-2-pentenyl chrysanthemate, o-phenylphenol, and pt-octylphenol as active ingredients. . 100 cm ² per the entry pathway, alpha-cyano -
0.5 to 1 of 3-phenoxybenzyl chrysanthemate
5 mg, 1-ethynyl-2-methyl-2-pentenyl chrysanthemate 2-30 mg, o-phenylphenol 1-10 mg, pt-octylphenol 2-2.
It is preferred to apply a mixture which results in 20 mg.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pest repellent for the purpose of repelling unpleasant and hygienic pests such as cockroaches.

[0002]

2. Description of the Related Art Devices used at home, particularly in kitchens, may be greatly damaged by invasion of unpleasant insects such as cockroaches or sanitary insects. Cockroaches are not only attracted by food, but also by heat. The typical optimum temperature for the assembly of German cockroaches is 27 ± 5 ° C. Electric appliances such as those for cooking in the kitchen have an attractant for cockroaches such as food scraps left inside, and also have a heat generating part inside or have a heat retaining / storing function, which is optimal for attracting unpleasant pests. It's temperature. In particular, a gap of about 1 cm is provided between the bottom and the floor of these home appliances to create a habitat for cockroaches that has the property of hiding behind objects. In addition, even if the device is to be completely sealed, it is difficult to take a completely sealed structure because of the heat radiation part and the opening / closing part. Therefore, various repellents have been proposed in order to prevent invasion of unpleasant insects such as cockroaches or sanitary insects into the equipment.

[0003]

However, no repellent which has a sufficient repellent effect against attraction by heat and has a long-term repellent effect even when it is installed near the heat-generating part of the device has not been obtained. In addition, if the drug has a strong insecticidal action, the harmful insects that have entered the device remain as carcasses, which is unsanitary.
Therefore, there has been a demand for a drug that has a repellent effect against attraction by heat and has a small insecticidal action even if the drug is touched for a short time. The object of the present invention is to provide a pest repellent that meets such a demand.

[0004]

The insect pest repellent of the present invention comprises:
α-Cyano-3-phenoxybenzyl chrysanthemate, 1-ethynyl-2-methyl-2-pentenyl chrysanthemate, o-phenylphenol, and p-t-
Octylphenol is the active ingredient. The mixing ratio of these active ingredients is 1 to 50% by weight of α-cyano-3-phenoxybenzyl chrysanthemate, and 1-ethynyl-2-.
Methyl-2-pentenyl chrysanthemate 1 to 80% by weight, o-phenylphenol 1 to 70% by weight, p-
A range of 1-70% by weight of t-octylphenol is suitable.

Α-Cyano-3-used in the repellent of the present invention
Phenoxybenzyl chrysanthemate exerts a repellent effect upon contact with cockroaches. It has a long duration because it has almost no volatility at room temperature. 1-ethynyl-2-methyl-2-pentenyl chrysanthemate and pt-
Octylphenol has some volatility at room temperature,
It is effective both in repelling by contact and repelling by olfactory stimulation of vaporized gas. Further, o-phenylphenol has a volatility at room temperature, and has an effect of both repelling by contact and repelling a vaporized gas by olfactory stimulation.

The repellent of the present invention has not only an effect of contact repelling cockroaches and repelling a volatilized gas by olfactory stimulation, but also a repellent effect of heat attraction by the combination of the above active ingredients. Moreover, even if it is installed near the heat-generating part of the device, it has a long-term repellent effect.
In addition, since it is relatively low in toxicity to cockroaches, it does not cause death and leaves no carcass in the device and does not cause filthiness. Furthermore, since the vapor pressure is relatively low, it does not give a strange odor and can be applied to home appliances installed in living spaces.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The above-mentioned active ingredients of the repellent of the present invention are in a state of solid to liquid depending on the combination at room temperature, and it is possible to apply the mixture as it is to an area or the like where cockroach repulsion is required. However, it is usually preferably prepared by using a suitable carrier or other compounding agent in various forms suitable for the application area, application method and the like, for example, a liquid formulation, a solid formulation and the like. Examples of the carrier used for preparing the liquid form include methyl alcohol,
Examples thereof include alcohols such as ethyl alcohol, ketones such as acetone, aliphatic hydrocarbons such as kerosene, paraffin and petroleum benzine, and aromatic hydrocarbons such as benzene and toluene. Further, as a carrier used in preparing a solid formulation, for example, silicic acid, kaolin, activated carbon, bentonite, diatomaceous earth, talc, clay, calcium carbonate, mineral powder such as ceramic powder, wood flour, soybean flour,
Examples thereof include plant powders such as wheat flour and starch, inclusion compounds such as cyclodextrin, and the like. However, the amount of the above active ingredient is 0.5 to 15 mg of α-cyano-3-phenoxybenzyl chrysanthemate per 100 cm ² , and 1-
2-30 mg of ethynyl-2-methyl-2-pentenyl chrysanthemate, 1-10 of o-phenylphenol
An excellent repellent effect can be obtained by adjusting the amount of mg and pt-octylphenol to 2 to 20 mg. Above all,
2 to 10 mg of α-cyano-3-phenoxybenzyl chrysanthemate, 7 to 20 mg of 1-ethynyl-2-methyl-2-pentenyl chrysanthemate, 2 to 8 mg of o-phenylphenol, and pt-octylphenol. The most excellent repellent performance was obtained with the mixture of 4 to 15 mg.

[0008]

Embodiments of the present invention will be described below. Example 1 By changing the mixing ratio of α-cyano-3-phenoxybenzyl chrysanthemate, 1-ethynyl-2-methyl-2-pentenyl chrysanthemate, o-phenylphenol, and p-t-octylphenol, No. 10 x 10 cm in size It was applied to the filter paper of No. 2 and used as a repellent sample. Then, contact repellency and heat attraction repellency against German cockroaches were evaluated.

First, regarding contact repellency, in a box of 100 × 100 cm in size, the slope of which has been subjected to escape prevention treatment,
Separate the filter paper (A) not treated with repellent, the repellent sample (B), and the repellent sample with a polyester mesh of a size covering the repellent sample (C), separated from each other. Place about 6g of sugar cubes as bait on them and release 100 cockroaches each
The amount of food reduced after the day was examined. Then, the contact repellency was expressed based on the following criteria based on the comparison of the reduction amounts.

[Evaluation Criteria for Contact Repellency] ⊚: The reduction amounts of Samples A and C are almost the same, and the ratio A / B of the reduction amount of A and the reduction amount of B is 15 or more. 3 or more and less than 15, x: Similarly, A / B is less than 3,
Alternatively, the reduction amounts in Samples B and C are almost the same.

Regarding the sustainability, after confirming the initial effect of the repellent sample (B), it was left in an atmosphere of 40 ° C. for 2 months. This sample was designated as B ', and placed in the same box as above with the filter paper (A) not treated with a repellent, and the same test was conducted.

[Evaluation Criteria for Sustainability] ⊚: The ratio A / B ′ of the amount of decrease of sample A and the amount of decrease of B ′ is 15
Above, ◯: A / B 'is 3 or more and less than 15 similarly, ×: A / B is also less than 3

Regarding the heat attracting and repelling property, the size is 50 × 5.
The repellent sample (B) is placed in the center of the right half in a 0 cm box, and a heater controlled at 27 ± 5 ° C. is placed in the center. On the other hand, filter paper (A) not treated with repellent is placed in the center of the left half of the box, and 27 ±
Place a heater controlled at 5 ° C. 100 male and female German cockroaches were released in this box, and sample A or B
The number of cockroaches invading the worm was counted from a 24-hour videotape recorder recording.

[Evaluation Criteria for Heat-Attractive Repellent Property] ◎: Ratio A / B of the number of individuals invading sample A and the number of individuals invading sample B is 50 or more, ◯: A / B is also 5 or more 50
Less than, x: Similarly, A / B is less than 5.

The survival rate was expressed as the ratio of the number of dead cockroaches in the same contact repellent test as described above using a box containing only the repellent sample (B). Table 1 shows the results.

[0016]

[Table 1]

Example 2 Table 2 shows some preferred prescription examples of the repellent of the present invention.

[0018]

[Table 2]

[0019]

INDUSTRIAL APPLICABILITY As described above, the repellent of the present invention has an effective repellent effect against cockroaches and also has a repellent effect against heat attraction, and is installed near the heat-generating part of the device. However, it has a long-term repellent effect. Therefore, it is particularly effective in providing a home appliance with a cockroach repellent function.

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical indication location A01N 31:08) (72) Inventor Yutaka Hironaka 20 Genrokubashi-cho, Ako-shi Accorderia Genroku 201 (72) Inventor Yuta Nitta 1269-11 Shioya, Ako-shi (72) Inventor Tatsuei Ito 10-20 Motomizuo-cho, Ako-shi

Claims (2)

[Claims] 1. A pest repellent containing α-cyano-3-phenoxybenzyl chrysanthemate, 1-ethynyl-2-methyl-2-pentenyl chrysanthemate, o-phenylphenol, and p-t-octylphenol as active ingredients. Agent. 2. 1 to 50% by weight of α-cyano-3-phenoxybenzyl chrysanthemate, 1 to 80% by weight of 1.
A pest repellent consisting of ethynyl-2-methyl-2-pentenyl chrysanthemate, 1-70% by weight o-phenylphenol, and 1-70% by weight pt-octylphenol.