JP7475894B2 - Spider repellent space forming agent - Google Patents

Description

The present invention relates to a spider repellent space forming agent, and more specifically to a spider repellent space forming agent that not only repels contact with spiders, but also creates an environment that is difficult for spiders to live in by preventing the entry of insects that serve as food for spiders.

Spiders are hated for their creepy appearance, and some species can cause damage to humans through their bites, so they are often treated as unpleasant pests. Spiders are also broadly classified into two types based on their feeding habits: wandering spiders (spiders that walk around to catch prey) and web-building spiders (spiders that spin webs to catch prey). Both types of spiders feed on live insects, so they tend to live in places where there are many insects to feed on. In addition, the spider webs made by web-building spiders are sticky to the touch and look unsanitary, making them as unpleasant as the spiders themselves. For this reason, various preparations have been developed to exterminate spiders or prevent them from spinning webs (Patent Documents 1 and 2).

For example, in Patent Document 1, the applicant of the present application discloses an aerosol agent for inhibiting spider web-building, which has a high spider-controlling effect and can inhibit spider web-building for a long period of time by improving the durability of the pest control component.
Patent Document 2 discloses a composition for preventing the invasion of flying pests, which can be applied to glass windows and the like to maintain a pest control effect over a long period of time against flying pests that are attracted to light, and describes that spider webs will no longer form on glass surfaces (see paragraphs [0033] and [0037] of Patent Document 2).

JP 2010-159226 A JP 2003-176203 A

However, although the invention described in Patent Document 1 has a repellent effect that makes spiders reluctant to come into contact with the pest control ingredient sprayed in the area, there has been no sufficient research conducted into its repellent effect against pests (especially flying pests) in the surrounding space.

The invention described in Patent Document 2 has the effect of making it difficult for flying pests to become anchored on the surface on which the pest control ingredient is applied and of preventing spider webs from being created, but it is unclear whether it has any effect of repelling flying pests in the surrounding space.

As a result of intensive research, the inventors of the present application have discovered that by incorporating a pyrethroid compound having a specific vapor pressure, at least one of a higher fatty acid ester or silicone, and a hydrocarbon solvent, it is possible to obtain a spider repellent space forming agent that can persistently repel spiders and other pests (especially flying pests) not only from the surface treated (applied or sprayed) with the agent, but also from the surrounding space, thereby creating an environment in which spiders find it difficult to live. In other words, the technical idea of the present invention is not only to directly repel spiders, but also to form a space free of spider food by acting on insects that serve as spider food, thereby indirectly repelling spiders as well.

The present invention was made in consideration of the above-mentioned problems with the conventional technology, and aims to provide a spider repellent space forming agent and a spider repellent method that not only repels spiders from contacting areas treated (applied or sprayed) with the agent, but also creates an environment in which spiders find it difficult to live (no insects to feed on) by turning the space around the treated (applied or sprayed) area into a space that can prevent the invasion of pests.

To achieve the above object, the spider repellent space forming agent according to claim 1 of the present invention is characterized by containing a pyrethroid compound having a vapor pressure of 1.0 to 11.0 mPa at 25°C, at least one of a higher fatty acid ester or a silicone, and a hydrocarbon solvent.

The spider repellent space forming agent according to claim 2 of the present invention is characterized by further containing a low-volatile insecticidal component.

The spider repellent space forming agent according to claim 3 of the present invention is characterized in that the pyrethroid compound is at least one selected from transfluthrin, metofluthrin, and profluthrin.

The spider repelling method according to claim 4 of the present invention is characterized in that a space of ²⁰ m3 or less is treated with a pyrethroid compound having a vapor pressure in the range of 1.0 to 11.0 mPa at 25°C, thereby preventing the intrusion of insects that serve as prey for spiders for 24 hours or more.

The spider repellent space forming agent of the present invention contains a pyrethroid compound with a specific vapor pressure, at least one of a higher fatty acid ester or silicone, and a hydrocarbon solvent, and is therefore capable of forming a space that not only repels contact with spiders and other pests, but also continuously prevents the intrusion of pests (especially flying pests) that serve as food for spiders. As a result, spiders can be repelled, for example by preventing the building of spider webs.

The spider repellent space forming agent according to claim 2 of the present invention further contains a low-volatile insecticidal component, which allows the above-mentioned effects to be more effectively achieved.

According to the spider repellent space forming agent according to claim 3 of the present invention, the above-mentioned effects can be more pronounced by using specific compounds in the pyrethroid compound, the hardly volatile insecticidal component, the higher fatty acid ester, and the silicone.

According to the spider repelling method of the present invention, by treating with a pyrethroid compound having a vapor pressure in the range of 1.0 to 11.0 mPa at 25°C, a specific space is made into a space that prevents the intrusion of insects that serve as food for spiders, thereby creating an environment in which spiders find it difficult to survive. In addition, the building of spider webs can be prevented.

FIG. 2 is a reference diagram showing the locations where the pest repellent effect of the present invention was evaluated.

An embodiment of the present invention will be described. Note that the embodiment described below is merely an example of the present invention and does not limit the technical scope of the present invention.

(Basic structure)
The spider repellent space forming agent according to the present invention has a basic structure containing a pyrethroid compound having a specific vapor pressure, at least one of a higher fatty acid ester and a silicone, and a hydrocarbon solvent.
In this way, by using a pyrethroid compound having a specific vapor pressure, at least one of a higher fatty acid ester or a silicone, and a hydrocarbon solvent as the blending ingredients, it is possible to continuously repel spiders and pests that spiders feed on (especially flying pests) not only on the surface treated with the agent (applied or sprayed) but also in the surrounding space, thereby creating an environment that is difficult for spiders to live in.

Each component of the present invention is explained below.

(Pyrethroid compounds)
The pyrethroid compound used in the spider repellent space forming agent of the present invention is a pyrethroid compound having a vapor pressure at 25°C in the range of 1.0 to 11.0 mPa. The vapor pressure is measured, for example, by the Donovan method. By using a pyrethroid compound having a specific vapor pressure in this way, the pyrethroid compound gradually volatilizes from the surface treated (applied, sprayed) with the agent into the surrounding space, and it is possible to prevent pests from invading the space. Specific compounds include transfluthrin, metofluthrin, profluthrin, terallethrin, furametrin, etc. Among these, it is preferable to use at least one compound selected from transfluthrin, metofluthrin, and profluthrin, since a higher repellent effect (repellent effect in space) can be obtained, and it is even more preferable to use transfluthrin among them.
Incidentally, among such pyrethroid compounds, there exist optical isomers and geometric isomers based on the asymmetric carbons or double bonds, and it goes without saying that the use of each of these isomers or any mixture thereof is also included in the present invention.

The amount of the pyrethroid compound to be added may be determined appropriately taking into consideration the purpose and period of use, but it is preferable to add 0.01 to 5.0 w/v% of the spider repellent space forming agent of the present invention. If the amount is less than 0.01 w/v%, the desired effect will not be obtained, and if it exceeds 5.0 w/v%, the stability of the repellent space forming agent may decrease.

(Insecticidal ingredient)
The spider repellent space forming agent of the present invention may contain an insecticidal component having a pest control effect in addition to the pyrethroid compound described above. In particular, it is preferable to use a hardly volatile insecticidal component as the insecticidal component in combination, since this can improve the durability of the repellent effect against spiders and pests.
The insecticidal component used in the spider repellent space forming agent of the present invention is not particularly limited, but it is preferable to use at least one type of difficult-to-volatile insecticidal component selected from cyfluthrin, phthalthrin, fenothrin, permethrin, cyphenothrin, cypermethrin, bifenthrin, deltamethrin, fenpropathrin, resmethrin, acrinathrin, imiprothrin, prallethrin, momfluorothrin, tefluthrin, flumethrin, fenvalerate, flucyslinate, cycloprothrin, fluvalinate, etofenprox, silafluofen, dinotefuran, imidacloprid, clothianidin, acetamiprid, thiacloprid, methoxadiazone, propoxur, fipronil, hydramethylnon, and brofuranilide. Among these, from the viewpoint of improving the durability of the repellent effect against spiders and pests, it is preferable to use cyfluthrin, etofenprox, bifenthrin, and permethrin, it is more preferable to use etofenprox and cyfluthrin, and it is even more preferable to use cyfluthrin.
In addition, the insecticidal component may have optical isomers or geometric isomers based on the asymmetric carbon or double bond, and the use of each of these isomers or any mixture thereof is of course included in the present invention.

The mixing ratio of the pyrethroid compound to the insecticidal component is not particularly limited, but from the viewpoint of the effect of preventing spiders from building webs, it is preferable to mix the insecticidal component in an amount 0.1 to 20 times the amount of the pyrethroid compound, more preferably 1 to 15 times, and even more preferably 2 to 10 times.

(Higher fatty acid ester or silicone)
The spider repellent space forming agent of the present invention is composed of at least one of higher fatty acid ester and silicone as an essential component. By using the pyrethroid compound and at least one of higher fatty acid ester and silicone in combination, the sustained release of the pyrethroid compound and the insecticidal component can be controlled, and the durability of the repellent against spiders and pests can be improved. In addition, the higher fatty acid ester maintains a liquid state in the sprayed area, so it also has the effect of making it difficult for spiders to build webs.

(Higher fatty acid ester)
The higher fatty acid ester used in the spider repellent space forming agent of the present invention is not particularly limited, but it is preferable to use an ester compound of a higher fatty acid having 14 to 18 carbon atoms and a branched saturated alcohol having 14 to 18 carbon atoms. Among them, isocetyl stearate, isocetyl isostearate, isostearyl palmitate, and isocetyl myristate are preferable. Among them, isocetyl stearate is preferable because of its high effect of preventing spiders from building webs.

(silicone)
The silicone used in the spider repellent space forming agent of the present invention is not particularly limited, but examples thereof include silicone oil, silicone emulsion, etc., specifically, dimethyl silicone, alkyl aralkyl modified silicone, amino modified silicone, silicone resin, aqueous polyether modified silicone, fluorine modified silicone, alkyl modified silicone, phenyl methyl silicone, etc. Among these, silicone oil is preferred from the viewpoint of spreading property at the spraying location, and specifically, it is preferred to use at least one silicone oil selected from dimethyl silicone oil, alkyl aralkyl modified silicone oil, amino modified silicone oil, and silicone resin oil.

The amount of the higher fatty acid ester or silicone may be appropriately determined taking into consideration the purpose and period of use, but is preferably 0.01 to 30 w/v% of the spider repellent space forming agent of the present invention, more preferably 0.10 to 25 w/v%, and even more preferably 0.20 to 20 w/v%. If the amount is less than 0.01 w/v%, the durability of the repellent against spiders and pests may not be sufficiently improved.

(Hydrocarbon solvent)
The hydrocarbon solvent used in the spider repellent space forming agent of the present invention is not particularly limited, but it is preferable to use a paraffin solvent, and specific examples thereof include normal paraffin hydrocarbons mainly having 12 to 14 carbon atoms (product names: Neothiosol, Isozole, DA-1, etc.), kerosene, isoparaffin hydrocarbons mainly having 10 to 16 carbon atoms (product names: IP Solvent 2028, IP Solvent 1620, Isopar H, Isopar L, Isopar M, Isozole 300, Isozole 400, etc.), and the like.
Furthermore, when a higher fatty acid ester is used in the present invention, it is preferable to use an isoparaffin-based hydrocarbon solvent mainly having a carbon number of 10 to 16 because of its good compatibility. Specific examples include IP Solvent 1620 and IP Solvent 2028 manufactured by Idemitsu Kosan Co., Ltd., Isopar H, Isopar L, and Isopar M manufactured by Exxon Mobil Corporation, and Isozole 300 and Isozole 400 manufactured by JXTG Nippon Oil & Energy Corporation, but are of course not limited to these.
As long as the effects of the present invention are not adversely affected, other organic solvents, for example, lower alcohols such as ethanol and isopropanol, glycols having 3 to 6 carbon atoms such as propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, dipropylene glycol, and hexylene glycol, glycol ethers thereof, ketone-based solvents, ester-based solvents, and the like, can be appropriately blended.

The spider repellent space forming agent of the present invention may further contain water, in which case surfactants and solubilizers may be added as necessary. Examples of such surfactants include ethers such as polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, and polyoxyethylene alkylamino ethers, fatty acid esters such as polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene glycerin fatty acid esters, polyoxyethylene styrenated phenol, and polyalkalolamide of fatty acid, as well as anionic surfactants such as polyoxyethylene styrylphenyl ether sulfate, polyoxyethylene alkyl ether sulfate, and dodecylbenzene sulfate.

The spider repellent space forming agent of the present invention may further contain acaricides, antifungal agents for molds and fungi, antibacterial agents and bactericides, or stabilizers, deodorants, antistatic agents, defoamers, fragrances, excipients, etc. Miticides include 5-chloro-2-trifluoromethanesulfonamido methyl benzoate, phenyl salicylate, 3-iodo-2-propynyl butylcarbamate, etc., while antifungal agents, antibacterial agents and bactericides include 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforine, 3-methyl-4-isopropylphenol, ortho-phenylphenol, etc.

The formulation of the spider repellent space forming agent of the present invention is not particularly limited, but examples include liquid agents, pump sprays, and aerosols. Since the agent can reach hard-to-reach places such as ceilings and under eaves, it is preferable to use an aerosol agent containing a propellant. As the propellant, liquefied gases such as dimethyl ether, liquefied petroleum gas (LPG), and hydrofluoroolefins, compressed gases such as nitrogen gas, carbon dioxide gas, nitrous oxide, and compressed air, or mixtures of these gases are used. The shape of the valve, nozzle, and other parts of the container in which the aerosol agent is filled may be selected appropriately depending on the scene and purpose of use.

(Method of avoidance)
The spider repelling method of the present invention not only directly repels spiders, but also forms a space free of spider food by acting on insects (especially flying pests) that serve as food for spiders, and as a result, can indirectly repel spiders. In other words, spiders and pests that serve as food for spiders are repelled not only by contact between the spider and the agent (a spider repellent space forming agent containing a pyrethroid compound with a vapor pressure of 1.0 to 11.0 mPa at 25°C) on a surface treated (applied or sprayed) with the agent (contact repellency), but also by volatilization of the agent into the surrounding area (spatial repellency). Specifically, the agent can prevent the intrusion of insects that serve as food for spiders into a space within 3 m from the surface treated with the agent, and can make a space within 2 m from the surface treated with the agent into a space that can more effectively prevent the intrusion of insects that serve as food for spiders.

In the spider repellent method of the present invention, the amount of the agent to be applied is preferably 5 to 50 mL/ ^m2 . When the agent is applied as an aerosol agent, the aerosol product may be sprayed toward the target location (surface) so as to achieve the above amount of application (for example, for 3 to 30 seconds per ^m2 ). Specifically, by spraying the aerosol product toward the target surface for 20 seconds, it is possible to prevent the intrusion of insects that serve as food for spiders into a space of ²⁰ m3 or less, and to make a space of ¹⁰ m3 or less into a space that more effectively prevents the intrusion of insects that serve as food for spiders.

In the spider repelling method of the present invention, the location where the agent is applied (applied or sprayed) is a place where insects gather in large numbers, such as around lights, gaps in the shadows of objects, or corners of rooms, and if the area is treated in advance, spiders can be effectively repelled. In addition, spraying the agent directly on spiders can also provide excellent immediate and reliable insecticidal effects.

Spiders that are subject to the spider repellent space forming agent of the present invention include, but are not limited to, the orb weaver spider, the long-jawed orb weaver spider, the black widow spider, the house spider, the grass spider, and the redback spider.

Next, the spider repellent space forming agent according to the present invention will be described in detail based on examples and comparative examples. Note that the present invention is not limited to the following examples.

Repellent space forming agents of Examples 1 to 7 and Comparative Examples 1 to 5 were prepared according to the formulations shown in Table 1. Compound A in the table was a compound represented by the chemical formula [Chemical Formula 1] below, and Compound B was a compound represented by the chemical formula [Chemical Formula 2] below. In addition, in the table, IP Solvent 2028 (manufactured by Idemitsu Kosan Co., Ltd.) was used as the isoparaffin, Neothiozole (manufactured by Toei Chemical Co., Ltd.) was used as the normal paraffin, and X-22-1877 (manufactured by Shin-Etsu Silicone Co., Ltd.) was used as the alkyl aralkyl modified silicone oil. The vapor pressure of the pyrethroid compounds in the table was measured by the Donovan method (the method described in J. Chromatogr. A, 749, 123 (1996)).
Next, 180 mL of each of the prepared repellent space forming agents was placed in a pressure-resistant container, and 270 mL of liquefied petroleum gas was pressurized and filled as a propellant to prepare each aerosol product.

The following tests were conducted on the aerosol products using the repellent space forming agents of each Example and Comparative Example. The results are shown in Table 2.

(Test for pest repellency)
An area 2m long x 2.5m wide x 2m high (volume ^10m3 ) was set up in an outdoor corner with an exterior wall as shown in Figure 1, and each aerosol product was sprayed for 20 seconds onto the ground and the entire wall surface facing the area. After spraying, two sticky traps (20cm x 20cm) were attached to the ground and the wall surface, and two more sticky traps (20cm x 20cm) were suspended in the air at a height of 1m above the ground.
Next, 12 hours and 24 hours after the spraying treatment, the number of crawling pests and the number of flying pests caught in each sticky trap were counted. The number of insects captured in the untreated control area was designated C, and the number of insects captured in the sprayed area was designated T. The repellency rates of crawling pests and flying pests were calculated using the following formula (1). The repellency rates were then evaluated as follows: 80-100% was designated "◎", 60-80% was designated "○", 40-60% was designated "△", and less than 40% was designated "×".
Repellency (%) = {(C - T) / C} x 100 ... Formula (1)

(Net-building prevention effect test)
Each aerosol product was sprayed onto a fence where many black widow spiders nest, and the presence or absence of web formation was observed one month later. The results were rated as follows: no web formation was marked "○", slight formation was marked "△", and frequent formation was marked "×".

From the results in Table 2, it was found that the aerosol products of Examples 1 to 7 using the spider repellent space forming agent according to the present invention exhibited higher pest repellent effect and web-building prevention effect than the aerosol products of Comparative Examples 1 to 5. In particular, it was found that the spider repellent space forming agents of Examples 1 to 7 have a high repellent effect against flying pests, and therefore not only do they have a contact repellent effect on the surface in contact with the target area, but they also make the space within the area itself a space into which pests have difficulty entering.
From this, it was found that the spider repellent space forming agent of the present invention contains a pyrethroid compound having a specific vapor pressure, at least one of a higher fatty acid ester or a silicone, and a hydrocarbon solvent, and is therefore capable of forming a space that can sustainably prevent the intrusion of pests that serve as food for spiders, and as a result, is capable of repelling spiders, for example by preventing them from building spider webs.

The spider repellent space forming agent of the present invention can be used for the purpose of exterminating a wide range of pests, both indoors and outdoors.

Claims (3)

A pyrethroid compound having a vapor pressure of 1.0 to 11.0 mPa at 25 °C;
A non-volatile insecticidal component,
A higher fatty acid ester ,
Hydrocarbon solvents and
A spider repellent space forming agent comprising : 2. The spider repellent space forming agent according to claim 1 , characterized in that the pyrethroid compound is at least one selected from the group consisting of transfluthrin , metofluthrin, and profluthrin. A method for repelling spiders, comprising treating a space of ²⁰ m3 or less with the spider repellent space forming agent according to claim 1 or 2 to turn the space into one that prevents the intrusion of insects that are prey for spiders for 24 hours or more.