JPH0244442B2 - - Google Patents

Description

[Detailed description of the invention]

[Field of Industrial Application] The present invention relates to a cockroach repellent that is effective in controlling cockroaches for a long period of time, and that cockroaches are more sensitive to each stage and take repellent actions compared to conventional repellents. It is. [Prior Art and Problems to be Solved] Cockroaches are insects that belong to the order Apiptera, along with termites, and are said to be the oldest insects that appeared on earth from the Carboniferous period. They are particularly disliked by people as sanitary pests because they feed on corpses and crawl around at night, transmitting infectious diseases. For this reason, there is a need for effective agents to control cockroaches.
It is extremely difficult to develop a cockroach repellent that is effective against vigorous cockroaches and is harmless to humans and animals, and there are currently no satisfactory examples of practical use. By the way, if we look at cockroach repellent technologies that have been proposed so far, the first one is fenitrothion [0,0-dimethyl-0-(3-methyl-4-
There is a proposal to use nitrophenyl thiophosphate] as a cockroach repellent. However, fenitrothion is extremely fast-acting, has strong cockroach-killing power, and has low toxicity to humans and animals, making it ideal as a fast-acting insecticide. Therefore, the problem was that it could not be expected to have long-term efficacy as a repellent. However, recently, R-NH-CH ₂ -CH ₂ -OH (R
It has been found that amino alcohols (such as N-methylaminoethanol and N-ethylaminoethanol) represented by an alkyl group having 1 to 4 carbon atoms exhibit a cockroach repellent reaction, and this is used as a cockroach repellent. Proposals began to be made to use it as a tool (see Japanese Patent Application Laid-open No. 40727/1983). However, this aminoalcohol-based cockroach repellent also has the disadvantage that transpiration is active and its effectiveness cannot be maintained for a long period of time. The impetus for the present invention was the characteristics of fenitrothion, which has a sensitive reaction to cockroaches and is highly lethal, and the characteristics of an aminoalcohol-based cockroach repellent, which is not effective enough to kill cockroaches but exhibits a unique repellency to cockroaches. If you combine them properly, you can remove cockroaches from areas that harm hygiene (for example, kitchens, dining rooms, parlors, etc.)
It is hoped that an ideal cockroach repellent that will not kill people no matter where they are exposed to, and will not cause them to infest places that people dislike, is the result of repeated experiments with various formulations and reactions to cockroaches. [Means for Solving the Problem] The method first adopted by the present inventor is the above-mentioned fenitrothion [0,0-dimethyl-0-(3-methyl-4-nitrophenyl)thiophosphate]
and N-methylaminoethanol or N-ethylaminoethanol. However, the drug thus obtained had a weak effect in repelling cockroaches, and had poor stability in terms of duration of efficacy, so that it could not be put to practical use as a cockroach repellent at all. However, by chance, I happened to find a pyrethroid insecticide [3-phenoxybenzyl-
dl-cis/trans-3(2,2-dichlorovinyl)-2,2-dimethyl-1-cyclopropanecarboxylate] has only a quick effect on cockroaches, and is effective in repelling cockroaches for a long period of time. It has been found to be an effective cockroach repellent. Moreover, the cockroach repellent thus obtained has good compatibility with synthetic resins, and when mixed into a synthetic resin liquid, it becomes a very logical cockroach repellent paint or cockroach repellent adhesive.
It has also been found that if this is mixed into a synthetic resin and molded into, for example, floor sheets or other building materials, construction products that exhibit a long-term cockroach-repelling effect can be obtained. Hereinafter, the effects of the present invention will be explained based on Examples.
Explain in detail. [Example] (a) 3-phenoxybenzyl-dl-cis/trans-3(2,2-dichlorovinyl)-2,2-
Dimethyl-1-cyclopropanecarboxylate [Sumitomo Chemical Co., Ltd. trade name: Exmin] (b) 0,0-dimethyl-0-(3-methyl-4-
(Nitrophenyl) thiophosphate; [Sumitomo Chemical Co., Ltd., trade name: Sumithion] (c) N-methylaminoethanol [Nippon Nyukazai Co., Ltd.] Each of the above agents (a), (b) and (c) was added by weight. Ratio 1:1:
A cockroach repellent was prepared by mixing these agents at a ratio of 1:1, and these agents (a), (b), and (c) dissolved very well. When the thus obtained cockroach repellent was mixed into an aminoalkyd resin liquid, it became an adhesive with good adhesion to wood and the like. Next, the mixture was mixed with a filler into the vinyl chloride resin obtained as described above and molded, resulting in a vinyl chloride sheet that could be used as a floor sheet. [Example] (a) 3-phenoxybenzyl-dl-cis/trans-3(2,2-dichlorovinyl)-2,2-
Dimethyl-1-cyclopropanecarboxylate [Sumitomo Chemical Co., Ltd. trade name: Exmin] (b) 0,0-dimethyl-0-(3-methyl-4-
(nitrophenyl) thiophosphate; [Sumitomo Chemical Co., Ltd., trade name: Sumithion] (d) N-ethylaminoethanol [manufactured by Nippon Nyukazai Co., Ltd.] Each of the above agents (a), (b) and (d) was added by weight. Ratio 1:1:
A cockroach repellent was prepared by mixing them at a ratio of 0.5, and these agents (a), (b), and (d) also dissolved very well. When the cockroach repellent thus obtained was mixed into an aminoalkyd resin liquid, it became an adhesive with good adhesion to wood, etc., and when mixed with a filler and molded into vinyl chloride resin, it was used as a floor sheet. A suitable vinyl chloride sheet was obtained, which showed very good compatibility with synthetic resins as in the above examples. [Experimental example] In order to verify the efficacy of the cockroach repellent of the present invention,
The following experiment was conducted. (Experimental drugs) Drugs prepared according to Examples Drugs prepared according to Examples Mixed drugs of Exmin and Sumithion (mixed weight ratio = 1:1) Mixed drugs of Exmin and N-methylaminoethanol (mixed weight ratio = 1: 1) Mixed drug of sumithion and N-methylaminomethanol (mixed weight ratio = 1:1) (Preparation of test specimen) A drug solution prepared by adjusting the weight of a filter paper in advance to a predetermined concentration with toluene. After quickly measuring the weight, the solvent was evaporated and the amount of the active ingredient of the drug was calculated. Incidentally, five test specimens were prepared for each agent, and the amount of the active ingredient was taken as the average value. As a result, 430 mg/m ² for ^the above experimental drug, 390 mg/m ² for the experimental drug, and 600 mg/m ² for the experimental drug; For drugs, it was 400mg/ ^m2 . (Experimental method) An untreated test specimen (blank) containing no drug or two test specimens containing the above-mentioned drugs were placed symmetrically in a large shear dish, and eight German cockroaches were released into the center. observed and evaluated cockroaches' reactions by placing granular baits that cockroaches prefer. In this experiment, the walking state of the cockroaches and the variation in food were standardized over a 24-hour period, and evaluation values were given as shown in the following table.

【table】

[Table] When the test specimens ~ were evaluated according to the above evaluation criteria, the following results were obtained. In addition,
Just to be sure, a cockroach repellent cannot be said to have product value unless it receives an average rating of "2" or higher. Evaluation results Test specimen Average evaluation value 3.5 Test specimen 〃 3.6 Test specimen 〃 1.7 Test specimen 〃 1.0 Test specimen 〃 1.2 In addition, the temperature of the test specimen ~ was evaluated for 3 months (from July 1, 1980 to September 30 of the same year) When we left it in a room at 40°C and used it to evaluate the reaction of cockroaches in the same way as above, we got the following results. Evaluation results Test specimen Average evaluation value 3.0 Test specimen 〃 3.2 Test specimen 〃 0.5 Test specimen 〃 0 Test specimen 〃 0 From the above experimental results, the cockroach repellent according to the present invention has excellent cockroach control power and has a long-lasting effect. It also turned out to be rich.

Claims (1)

[Claims] 1 R—NH—CH ₂ —CH ₂ —OH (R has 1 to 1 carbon atoms
4 alkyl group); and 0,0-dimethyl-0-(3-methyl-4-
A cockroach repellent comprising: (nitrophenyl) thiophosphate; and 3-phenoxybenzyl-dl-cis/trans-3(2,2-dichlorovinyl)-2,2-dimethyl-1-cyclopropanecarboxylate. agent.