Ant repellent composition and ant repelling method

Abstract

To provide a repellent composition and a repelling method that offer high safety, exhibit superior ant-repelling effects, and ensure prolonged effectiveness.SOLUTION: The present invention provides an ant repellent composition containing normal paraffin as an active ingredient, and an ant repelling method using normal paraffin.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an ant repellent composition and a method for repelling ants. [Background technology]

[0002] Traditionally, many insecticides, including pyrethroid insecticides, have been used as pest control agents. The target pests are diverse, including not only sanitary pests such as mosquitoes, but also nuisance pests such as ants. In addition, pests such as ants can invade not only outdoors but also indoors. However, when insecticides containing insecticidal ingredients are applied to indoor treatments such as flooring and sinks to exterminate pests that have invaded indoors, there are concerns about safety and environmental pollution. To solve this problem, repellents that do not contain insecticidal ingredients and use natural essential oils have been proposed. From the perspective of maintaining the ecosystem and the food chain, it has been hoped that control objectives could be achieved by repelling ants with safer ingredients, rather than by killing and exterminating ants with highly insecticidal ingredients. At the same time, it has been desired that the ant repellent effect would last even when used indoors or outdoors.

[0003] For example, Patent Document 1 discloses a repellent for pests such as ants, which contains an aromatic carboxylate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-99519 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, none of the conventional techniques has been able to provide a safe and satisfactory repellent effect. An object of the present invention is to provide a repellent composition and a repellent method which are highly safe, exhibit excellent repellent effect against ants, and have a long-lasting effect. [Means for solving the problem]

[0006] As a result of intensive research into solving the above problems, the present inventors have found a solution comprising the following configuration, and have completed the present invention. That is, the present invention relates to the following. [1] An ant repellent composition comprising normal paraffin as an active ingredient. [2] A method of repelling ants using normal paraffin. Effect of the Invention

[0007] According to the present invention, it is possible to provide a repellent composition and a repellent method which are highly safe, exhibit excellent repellent effect against ants, and have a long-lasting effect. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram for explaining Test Example 1 and Test Example 2 in the examples. [Diagram 2] FIG. 2 is a diagram for explaining Test Example 3 in the examples. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will be described below using embodiments, but the scope of the present invention is not limited to the following embodiments.

[0010] The ant repellent composition according to the embodiment of the present invention (hereinafter, sometimes simply referred to as the repellent composition) contains normal paraffin as an active ingredient. The ant repellent method according to the embodiment of the present invention (hereinafter, sometimes simply referred to as the repellent method) uses normal paraffin, and for example, applies the ant repellent composition containing normal paraffin to an object.

[0011] The repellent composition and repellent method according to the embodiment of the present invention have excellent repellent effects against ants. Therefore, ants avoid contact with the object to which the repellent composition of the present embodiment is applied. The repellent effect against ants of the repellent composition of the present embodiment is very large, and for example, the repellent composition can inhibit the intrusion of ants into the area to which it is applied. Therefore, for example, the repellent composition of the present embodiment can be applied (applied, sprayed, etc.) to the inside of a house, the periphery or intrusion route of a house, shoes, socks, clothing (e.g., the hem), etc., or directly to the skin to inhibit the intrusion or crawling up of ants.

[0012] In addition, the repellent composition of the present embodiment has little effect on the environment of people, animals, plants, etc. Therefore, it can be used in places where children or pets may touch, and can be used safely on socks, clothes, etc. Furthermore, for example, by applying the repellent composition of the present embodiment to the inside of a house, the periphery of a house, an intrusion route, etc., it is possible to inhibit the intrusion of ants into a house, etc.

[0013] In the present embodiment, "repellency" against ants means the effect of preventing ants from coming into contact with the repellent composition of the present embodiment itself or an object to which the repellent composition has been applied, and preferably means the effect of preventing ants from coming into contact with an object even after time has elapsed since the application of the repellent composition. One example is the repellent effect against ants 7 days after the application of the repellent composition.

[0014] Ants according to the embodiment of the present invention refer to insects belonging to the superfamily Formicidae, family Formicidae, and include, for example, the house ant, the Japanese wood ant, the brown ant, the brown ant, the water ant, etc. Among these, the repellent method according to the embodiment of the present invention is preferably applied to the house ant, the Japanese wood ant, and the water ant, and more preferably applied to the house ant.

[0015] The ant repellent composition according to the embodiment of the present invention contains normal paraffin as an active ingredient. Conventionally, it was not known that normal paraffin has an ant repellent effect, but the inventor's research has revealed that a repellent composition containing normal paraffin as an active ingredient has an ant repellent effect. Normal paraffin is highly safe and does not easily pollute the environment, so it can be used for indoor treatments, etc.

[0016] Normal paraffin is a general term for straight-chain hydrocarbon compounds, and may be a mixture of straight-chain hydrocarbon compounds. In the ant repellent composition according to the embodiment of the present invention, the normal paraffin contains a linear hydrocarbon compound having preferably a carbon number of 5 to 20, more preferably a carbon number of 7 to 17, and even more preferably a carbon number of 10 to 17. When the normal paraffin contained in the repellent composition has a carbon number of 5 to 20, a sufficient repellent effect can be obtained.

[0017] In an embodiment of the present invention, the boiling point of normal paraffin is preferably 30 to 350° C., more preferably 90 to 310° C., and further preferably 150 to 300° C. When the boiling point of normal paraffin is 30 to 350° C., a sufficient repellent effect can be obtained.

[0018] Examples of such normal paraffins include normal pentane, normal hexane, normal heptane, normal octane, normal nonane, normal decane, normal undecane, normal dodecane, normal tridecane, normal tetradecane, normal pentadecane, normal hexadecane, normal heptadecane, normal octadecane, normal nonadecane, and normal icosane. Of these, normal heptane, normal octane, normal nonane, normal decane, normal undecane, normal dodecane, normal tridecane, normal tetradecane, normal pentadecane, normal hexadecane, and normal heptadecane are preferred, and normal decane, normal undecane, normal dodecane, normal tridecane, normal tetradecane, normal pentadecane, normal hexadecane, and normal heptadecane are more preferred. As the normal paraffin, these linear hydrocarbon compounds may be used individually, or a mixture of these normal paraffins may be used.

[0019] Normal paraffin is available from many manufacturers and is easily available. For example, the following commercial products can be mentioned as normal paraffin containing the above components. Neothiosol (manufactured by Sanko Chemical Industry Co., Ltd., boiling point range 225 to 247°C), Cactus normal paraffin SHLA (manufactured by JX Nippon Oil & Energy Corporation, boiling point range 248 to 280°C), normal paraffin MA (JXTG Nippon Oil & Energy Corporation, boiling point range 219 to 247°C), Norpar 10, Norpar 12 (manufactured by Exxon Mobil Corp.), Shellsol TG, Shellsol TK, Shellsol TM, Shellsol S (manufactured by Shell Chemicals Co., Ltd.), etc. These may be used alone or in combination of two or more types.

[0020] The ant repellent composition according to the embodiment of the present invention may further contain paraffin other than normal paraffin. Examples of paraffin other than normal paraffin include isoparaffin and cycloparaffin.

[0021] Isoparaffin is a general term for branched hydrocarbon compounds, and may be a mixture of branched hydrocarbon compounds. The isoparaffin used in the embodiment of the present invention contains a branched hydrocarbon compound preferably having 5 to 20 carbon atoms, more preferably having 7 to 17 carbon atoms, and even more preferably having 10 to 17 carbon atoms. Examples of such isoparaffins include isododecane, isotridecane, isotetradecane, isopentadecane, isohexadecane, isoheptadecane, isooctadecane, etc., with isododecane and isotridecane being preferred, and isododecane being more preferred. As the isoparaffin, each of these branched hydrocarbon compounds may be used alone, or a mixture of these isoparaffins may be used.

[0022] Isoparaffin is available from many manufacturers and is readily available. For example, Isopar L and Isopar M (manufactured by Exxon Mobil Corp.) and IP Clean LX (manufactured by Idemitsu Kosan Co., Ltd.), which contain the above-mentioned components, can be used. These may be used alone or in combination of two or more types.

[0023] Cycloparaffin is a general term for monocyclic hydrocarbon compounds, and may be a mixture of monocyclic hydrocarbon compounds. The cycloparaffin used in the embodiment of the present invention contains a monocyclic hydrocarbon compound preferably having 5 to 20 carbon atoms, more preferably having 7 to 17 carbon atoms, and even more preferably having 10 to 15 carbon atoms.

[0024] Examples of such cycloparaffins include cyclooctane, cyclodecane, decalin, etc. These cycloparaffins may be used alone, or a mixture of these cycloparaffins may be used.

[0025] Cycloparaffins are commercially available from many manufacturers and are easily available. For example, Exxol D130 and D140 (both manufactured by Exxon Chemical Co., Ltd.), which contain the above components, can be used. These may be used alone or in combination of two or more types.

[0026] In addition, in the ant repellent composition according to the embodiment of the present invention, liquid paraffin containing the above-mentioned normal paraffin can be used. In this case, the liquid paraffin containing normal paraffin can be said to be an ant repellent composition.

[0027] Liquid paraffin is a paraffin that is liquid at room temperature and is a mixture that mainly contains three components: normal paraffin, isoparaffin, and cycloparaffin. Generally, liquid paraffin is a colorless liquid at room temperature and is a chemically stable substance that is non-volatile and insoluble in water.

[0028] In an embodiment of the present invention, the boiling point of the liquid paraffin is preferably 100 to 500° C., more preferably 200 to 460° C., and further preferably 250 to 370° C. If the boiling point of the liquid paraffin is 100 to 500° C., a sufficient repellent effect can be obtained.

[0029] Liquid paraffin is available from many manufacturers and is easily available. For example, liquid paraffin No. 40-S (manufactured by Sanko Chemical Industry Co., Ltd., boiling point range 275 to 365°C), liquid paraffin No. 55-S (manufactured by Sanko Chemical Industry Co., Ltd., boiling point range 271 to 433°C), liquid paraffin No. 80-S (manufactured by Sanko Chemical Industry Co., Ltd., boiling point range 310 to 453°C), and Thiotech E (manufactured by Sanko Chemical Industry Co., Ltd., boiling point range 260 to 340°C) can be used. Among them, liquid paraffin No. 40-S and Thiotech E are preferred. These may be used alone or in combination of two or more types. Only one type of liquid paraffin may be used, or two or more types may be used in combination.

[0030] In an embodiment of the present invention, by using liquid paraffin containing normal paraffin, it is possible to include normal paraffin as an active ingredient in the ant repellent composition.

[0031] The normal paraffin and liquid paraffin containing normal paraffin contained in the repellent composition according to the embodiment of the present invention are preferably those that satisfy at least one of the standards set forth in the Japanese Pharmacopoeia, the Food Additives Official Standards, the Standards for Quasi-Drug Raw Materials, and the Standards for Cosmetic Raw Materials, in terms of safety.

[0032] The repellent composition according to the embodiment of the present invention may further contain a pest repellent component other than normal paraffin.

[0033] Examples of pest repellent components that may be further contained include N,N-diethyl-3-methylbenzamide (DEET), 2-(2-hydroxyethyl)-1-piperidinecarboxylic acid 1-methylpropyl ester, and p-menthane-3,8-diol.

[0034] Further pest repellent components that may be contained include, for example, essential oil components and extracts such as citronellal, citronellol, citral, linalool, terpineol, α-pinene, camphor, geraniol, carane-3,4-diol, peppermint, cedarwood, lavender, tea tree, chamomile, geranium, cinnamon, citronella, lemongrass, clover, bergamot, bay leaf, and eucalyptus. Examples of pest repellent components that may be further contained include pyrethroid compounds such as allethrin, beta-cyfluthrin, bifenthrin, cyfluthrin, cyhalothrin, cypermethrin, empenthrin, deltamethrin, etofenprox, fenpropathrin, phthalthrin, permethrin, prallethrin, pyrethrins, silafluofen, tefluthrin, tralomethrin, transfluthrin, tetramethrin, fenothrin, cyphenothrin, lambda-cyhalothrin, gamma-cyhalothrin, furamethrin, metofluthrin, dimefluthrin, mepafluthrin, profluthrin, momfluorothrin, resmethrin, and imiprothrin.

[0035] In the repellent composition according to the embodiment of the present invention, the content of the pest repellent component other than normal paraffin is preferably 1% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0% by mass. Since the repellent composition according to the embodiment of the present invention has a high pest repellent effect even without containing any pest repellent component other than normal paraffin, it is preferable that it does not contain any pest repellent component other than normal paraffin. For example, it is preferable that the repellent composition according to the embodiment of the present invention contains only normal paraffin as an active ingredient. In addition, when liquid paraffin containing normal paraffin is used, it is preferable that the liquid paraffin is used as the repellent composition.

[0036] The normal paraffin content in the repellent composition according to the embodiment of the present invention is not particularly limited. The normal paraffin content in the repellent composition according to the embodiment of the present invention is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more. The upper limit of the normal paraffin content is not particularly limited. By containing normal paraffin at such a concentration, sufficient ant repellent effect is exhibited.

[0037] In addition to the above-mentioned components, the repellent composition according to the embodiment of the present invention may further contain optional components within a range that does not impair the effects of the present invention. For example, the optional components include solvents, nonionic, anionic or cationic surfactants, antioxidants such as butylhydroxytoluene, stabilizers such as citric acid and ascorbic acid, inorganic powders such as talc and silicic acid, bactericides, antifungal agents, deodorants, fragrances, perfumes, dyes, ultraviolet absorbers, chelating agents, retention agents, pH adjusters, thickeners, etc.

[0038] When the repellent composition according to the embodiment of the present invention contains a solvent, the type of the solvent is not particularly limited. For example, the solvent is water, lower alcohol such as ethanol or isopropyl alcohol, isopropyl myristate, propylene glycol, butylene glycol, ethylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, propylene glycol diacetate, glycerin, etc. The solvent may be used in combination. From the viewpoint of preventing irritation during use and obtaining an excellent feeling of use, it is preferable that the composition does not contain lower alcohol such as ethanol or isopropyl alcohol. In addition, the content of the solvent in the repellent composition according to the embodiment of the present invention is not particularly limited.

[0039] There is no particular limitation on the method for producing the repellent composition according to the embodiment of the present invention. For example, the repellent composition may be prepared by mixing and stirring the normal paraffin described above and, if necessary, a solvent and / or additives.

[0040] The ant repellent composition according to the embodiment of the present invention can be used as an ant repellent. The ant repellent according to the embodiment of the present invention may contain the ant repellent composition. The ant repellent method according to the embodiment of the present invention uses normal paraffin. The ant repellent composition according to the embodiment of the present invention can be used in the ant repellent method. In the ant repellent method according to the embodiment of the present invention, normal paraffin may be used alone, or normal paraffin contained in the ant repellent composition according to the embodiment of the present invention may be used. The above description can be directly applied to the normal paraffin and the ant repellent composition used in the ant repellent method according to the embodiment of the present invention.

[0041] The method of using the ant repellent composition according to the embodiment of the present invention is not particularly limited, and the ant repellent composition may be used as an ant repellent as it is. The formulation of the ant repellent is not particularly limited. For example, the ant repellent may be a liquid agent that contains the ant repellent composition as is. When the ant repellent according to the embodiment of the present invention is a liquid agent, the ant repellent can be applied by impregnating a suitable cloth or the like with the ant repellent and wiping the application area. The ant repellent may be prepared by further adding the above-mentioned optional components to the ant repellent composition when it is formulated. For example, by blending optional components such as a surfactant and a gelling agent, the ant repellent may be formulated into an emulsion, gel, paste, aerosol, pump, or the like.

[0042] When formulated as an aerosol, the ant repellent composition according to the embodiment of the present invention and a propellant may be enclosed in an aerosol can before use. On the other hand, when in the form of a spray, the ant repellent composition according to the embodiment of the present invention may be enclosed in a container such as a hand spray before use. Examples of the propellant include liquefied gas, compressed gas, etc. Examples of the liquefied gas include liquefied petroleum gas, dimethyl ether, hydrofluoroolefin, difluoromonochloroethane, etc. Examples of the compressed gas include carbon dioxide gas, nitrogen gas, compressed air, and the like. In either the aerosol form or the spray form, the average particle size of the droplets sprayed in the form of a mist is not particularly limited. For example, the 50% average particle size at a position 30 cm away from the nozzle is about 10 to 1000 μm. When formulated as an aerosol or pump agent, the ant repellent can be used by spraying an appropriate amount on the application site, for example, inside a house, on the perimeter or entry route of a house, on shoes, socks, clothing (e.g., the hem), or directly on the skin.

[0043] In this way, the ant repellent composition containing normal paraffin as an active ingredient can be mixed with a solvent to stabilize the formulation, allowing the ant repellent to be sprayed without any problems.

[0044] In the ant repelling method according to the embodiment of the present invention, the amount of normal paraffin used varies depending on the application site and is not particularly limited. However, in order to obtain a sufficient repellent effect against ants, for example, it is preferable to use 1 g / m 2 More preferably, 5 g / m 2 More preferably, 15 g / m 2 In the ant repelling method according to the embodiment of the present invention, the upper limit of the amount of normal paraffin used is not particularly limited, but it is preferably 100 g / m 2 The following is acceptable. EXAMPLES

[0045] EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0046] (Test Example 1) The samples listed in Table 1 below were used as repellent compositions, and repellency tests were conducted using the house ant, the Japanese ant, and the Japanese mountain ant as test insects. As shown in Fig. 1, a plastic cup 41 (diameter 6.5 cm, height 3.7 cm) with a hollowed-out bottom was placed upside down on a polyvinyl chloride plate (PVC plate 42, 7.5 cm x 7.5 cm), and calcium carbonate was applied to the inner side of the plastic cup 41. 100 µL of the sample shown in Table 1 was applied to half of the PVC plate inside the plastic cup 41 and left to stand for 1 hour to prepare treated area 31, and the remaining half was used as untreated area 21. If any excess sample remained on the PVC plate 42 after standing, it was removed by gently pressing paper against it. Immediately after the specimens were treated, each test insect 11 was applied to the area not treated with the specimen (untreated area 21), and the behavior was observed and evaluated according to the following criteria. In addition, three days after the treatment of the samples, the house ant (test insect 11) was similarly subjected to the untreated area 21, and its behavior was observed and evaluated according to the following criteria (three days later). 〇: Does not pass through, has an intrusion inhibition effect (repellent effect) △: There is a repellent reaction, but it can pass through ×: Passed through, no invasion inhibition effect (repellent effect)

[0047] Test Example 1 is shown in Table 1. Note that "-" indicates that the test was not performed.

[0048] [Table 1]

[0049] As shown in Table 1, samples 3 and 4, which are examples of the present application, have excellent repellent effects against the house ant, demonstrating that the repellent composition according to the embodiment of the present invention is useful as a repellent and a method for repelling ants. Benzyl salicylate, sample 5, which is a reference example, is also known as a repellent component for ants, and samples 3 and 4, which are examples of the present application, were shown to have the same effect as these known pest repellent components.

[0050] (Test Example 2) The samples shown in Table 2 below were used as repellent compositions, and repellency tests were carried out using the house ant Pseudomys nobilis as test insects. As shown in Fig. 1, a plastic cup 41 (diameter 6.5 cm, height 3.7 cm) with the bottom hollowed out was placed upside down on a polyvinyl chloride plate (PVC plate 42, 7.5 cm x 7.5 cm), and calcium carbonate was applied to the inside side of the plastic cup 41. Each specimen was applied to half of the polyvinyl chloride plate inside the plastic cup 41 in the amount of treatment shown in Table 2 and left to stand for one hour to prepare treated area 31, and the remaining half was used as untreated area 21. Thiotech E was applied as is in the amount of treatment, and the other specimens were applied as acetone solutions in the amount of treatment shown in Table 2, and then treatment was performed. One day, four days, and seven days after the treatment of the specimens, test insects 11 were applied to the untreated area (untreated area), and their behavior was observed and evaluated according to the following criteria. 〇: Does not pass through, has an intrusion inhibition effect (repellent effect) △: There is a repellent reaction, but it can pass through ×: Passed through, no invasion inhibition effect (repellent effect)

[0051] Test Example 2 is shown in Table 2.

[0052] [Table 2]

[0053] As shown in Table 2, sample 3, an example of the present application, had excellent repellent effects against the house ant even 1 day, 4 days, and 7 days after treatment of the sample, demonstrating that the repellent composition of the embodiment of the present invention has a highly sustained repellent effect.

[0054] (Test Example 3) The samples shown in Table 3 below were used as repellent compositions, and repellency tests were carried out using the house ant, Oreochromis orbiculatus, as test insects. As shown in Figure 2, the sample was applied from one end of a 10 cm glass rod 43 to 5 cm to prepare a treatment area 32. Five test insects 12 were placed at the end of an untreated area 22 where the sample had not been applied, and observed to see whether they passed through the treatment area 32, and evaluated according to the following criteria. 〇: Does not pass through, has an intrusion inhibition effect (repellent effect) ×: Passed through, no invasion inhibition effect (repellent effect)

[0055] Test Example 3 is shown in Table 3.

[0056] [Table 3]

[0057] As shown in Table 3, samples 3 and 6, which are examples of the present application, were excellent in the effect of inhibiting the invasion of small house ants, demonstrating that the repellent composition according to the embodiment of the present invention is useful as an ant repellent and an ant repellent method. Citronella oil in sample 7, which is a reference example, is known as an ant repellent component, and benzyl salicylate in sample 5, which is a reference example, is also known as an ant repellent component, but samples 3 and 6, which are examples of the present application, were shown to have the same effect as these known pest repellent components.

[0058] The components of the samples shown in Tables 1 to 3 are described below. Sample 1: Exxor D80, manufactured by ExxonMobil Sample 2: Isopar L, ExxonMobil Sample 3: Thiotech E, manufactured by Sanko Chemical Industry Co., Ltd. Sample 4: Normal paraffin SHLA, manufactured by JX Nippon Oil & Energy Corporation Sample 5: Benzyl salicylate Sample 6: Liquid paraffin No. 40-S, manufactured by Sanko Chemical Industry Co., Ltd. Sample 7: Citronella oil [Explanation of symbols]

[0059] 11, 12 Test insects 21, 22 Untreated areas Treatment areas 31 and 32 41 Plastic Cup 42 PVC board 43 Glass Rod

Claims

1. An ant repellent composition comprising normal paraffin as an active ingredient.

2. A method of repelling ants using normal paraffin.

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