WO2020137773A1 - Pest repellent composition - Google Patents

Abstract

This pest repellent composition contains components: (A) 13-99.995 mass% of at least one nonvolatile liquid oily component that has a surface tension of not more than 40 mN/m at 25°C, that has a viscosity of not more than 400 mPa·s at 23°C when measured by using a B-type rotational viscometer, and that is selected from the group consisting of silicone oils, ester oils, ether oils, hydrocarbon oils, aliphatic alcohols, and polyhydric alcohols; and (B) 0.005-15 mass% of at least one repellent essential oil that is selected from the group consisting of citronella oils, lemongrass oils, eucalyptus oils, peppermint oils, and catnip oils.

Description

Pest repellent composition

The present invention relates to a pest repellent composition.

Pests, for example, flying pests such as mosquitoes and flies are factors that cause pathogens in animals such as humans to cause infectious diseases and dermatitis. In particular, some mosquitoes are pathogens such as dengue fever, zika fever, yellow fever, encephalitis, and malaria, and are hygienically extremely harmful insects.
Conventionally, in order to protect the body from such flying pests, a method of spraying an insecticide or applying a repellent to the skin surface has been widely used. As a typical repellent, DEET (N,N-diethyl) is used. Toluamide) is commonly used.

Pests such as mosquitoes have chemoreceptive systems such as thermoreceptors that sense the body temperature of animals, olfactory receptors that sense volatile substances such as body odor, and carbon dioxide receptors that sense carbon dioxide. Animal detection is performed by DEET, which repels pests by modulating the chemoreceptive system of such pests to neutralize the cognitive sensation of the pests.
However, DEET has an unpleasant odor, and in order to exert a sufficient repellent sustaining effect, it is necessary to blend a certain amount or more. Furthermore, it is known that some people cause allergies and rough skin, and there is a problem that the amount of use and the number of times of use are limited for infants and people with sensitive skin.

Therefore, the use of natural essential oil as a repellent component is being considered. Natural essential oils such as citronella oil, lemon eucalyptus oil, lemongrass oil, orange oil, and cassia oil are also used for candles and aroma lotions, and are highly safe for humans. However, the repellent sustaining effect against these pests is not sufficient, and there is a problem in its practicality.

In addition, various proposals have been made for pest repellents and repellent compositions.
For example, Patent Document 1 describes that an insect repellent such as DEET is added to a skin protective agent containing a fluorine/polyether co-modified silicone and an ultraviolet protection component. Patent Document 2 describes a flying insect repellent that uses natural essential oils such as citronella oil and lemongrass oil and can suppress the arrival of pests and blood-feeding behavior even at low concentrations. In addition, Patent Document 3 discloses a pest repellent volatilizing composition containing a specific amount of citronellal as a pest repellent component.

Japanese Patent Laid-Open No. 8-59447 JP 2002-173407 A JP-A-2003-201203

The present invention provides the following [1] to [7].
[1] A pest repellent composition or a pest retention control composition containing the following components (A) and (B).
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 99.995% by mass or less (B) consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected from the group: 0.005 mass% or more and 15 mass% or less [2] Pest repellent other than the components (A) and (B) containing the following components (A) to (C) An oil-in-water type mosquito repellent composition or a mosquito retention-preventing composition having an agent content of 10 mass% or less.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected: 0.005% by mass or more and 15% by mass or less (C) Water: 35% by mass or more and 86.995% by mass or less [3] Contains the following components (A) to (C), The mass ratio [(A)/(C)] of the components (A) and (C) is 0.2 or more and 5 or less, and the content of the pest repellent other than the components (A) and (B) is Is 10 mass% or less, an oil-in-water type mosquito repellent composition or a mosquito retention control composition.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13 mass% or more and 50 mass% or less (B) 1 selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil At least seed repellent essential oil: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less [4] Contains the following components (A) to (C), and the component (A The mass ratio [(B)/(A)] of the component (B) to () is 0.0001 or more and 0.5 or less, and the mass ratio of the component (A) and the component (C) [(A)/( C)] is 0.2 or more and 5 or less, and the content of the pest repellent other than the components (A) and (B) is 10% by mass or less, an oil-in-water type mosquito repellent composition or mosquito retention. Inhibitory composition.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13 mass% or more and 50 mass% or less (B) 1 selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil At least seed repellent essential oil: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less [5] Contains the following components (A) to (D), and the component (A The mass ratio [(B)/(A)] of the component (B) to () is 0.0001 or more and 0.5 or less, and the mass ratio of the component (A) and the component (C) [(A)/( C)] is 0.2 or more and 5 or less, and the content of the pest repellent other than the components (A) and (B) is 10% by mass or less, an oil-in-water type mosquito repellent composition or mosquito retention. Inhibitory composition.
(A) One or more selected from the group consisting of silicone oils, ester oils, and hydrocarbon oils having a surface tension of 40 mN/m or less at 25° C. and a viscosity at 23° C. of not more than 400 mPa·s by a B type rotational viscometer. Non-volatile liquid oily ingredient: 13 mass% or more and 50 mass% or less (B) one or more repellent essential oils selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and mint oil: 0.005 mass% or more 15% by mass or less (C) Water: 35% by mass or more and 86.995% by mass or less (D) Thickener: 0.05% by mass or more and 3% by mass or less [6] [1] to any one of [5] A method for repelling harmful insects, which comprises applying the composition of claim 1 to the surface of human skin.
[7] A method for suppressing retention of pests, which prevents the pests from staying on human skin by attaching the composition of any one of [1] to [5] to the limbs of the pests.

Detailed Description of the Invention

[Pest repellent composition, pest retention control composition]
The pest repellent composition and the pest retention control composition of the present invention (hereinafter collectively referred to as "the composition of the present invention") are compositions containing the following components (A) and (B).
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13% by mass or more and 99.995% by mass or less (B) consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected from the group: 0.005 mass% or more and 15 mass% or less

The composition of the present invention contains specific amounts of the components (A) and (B), has an excellent repellent sustaining effect against harmful insects, particularly flying harmful insects, suppresses a strong odor derived from the repellent components, and is suitable for application to the skin. It is a composition.

Among the pest repellents, those applied to the skin are desired to be safe and have little odor, and to have not only the initial repellent effect but also the durability of the repellent effect. However, the presently available major pest repellents do not currently meet these needs.
As described above, the existing pest repellents such as DEET described in Patent Document 1 have an unpleasant odor and also have a problem in safety to the human body. There is a demand for repellents that can be used with more peace of mind.
The flying insect repellent described in Patent Document 2 and the pest repellent volatilizing composition described in Patent Document 3 exhibit a space repellent effect against harmful insects such as flying insects, and are applied to human skin. The pest repellent composition has different preferred dosage forms and required properties.
In the pest repellent applied to human skin, considering the skin environment in which water such as sweat and waste products are mixed, it is desired to further improve the persistence of the repellent effect. However, in repellents using natural essential oils, etc., if the content of natural essential oils is increased, the repellent effect and its sustainability are expected to be improved, but on the other hand, there is a problem that the odor is too strong to endure actual use. ..
At present, no composition has been found which has excellent pest repellent sustaining effect, is safe, and suppresses strong odor derived from repellent components, and is suitable for application to the skin.

An object of the present invention is to provide a pest repellent composition which has excellent repellent sustaining effects against pests, particularly flying pests, is safe, and has a strong odor derived from repellent components suppressed, and is suitable for application to the skin.

As a result of intensive studies, the present inventors have found that a nonvolatile liquid oily component having a specific surface tension and viscosity has an effect of repelling harmful insects such as mosquitoes, but when actually used on human skin. Had room for further study on the persistence of the repellent effect. Therefore, by combining existing repellent essential oils such as citronella oil with a content such that odor does not pose a problem, and combining with a non-volatile liquid oily component having a specific surface tension and viscosity, a repellent sustaining effect is achieved while suppressing odor. Found to be extended. That is, it was found that a pest repellent composition containing a non-volatile liquid oily component having a specific surface tension and viscosity and an existing repellent essential oil such as citronella oil in a specific amount can solve the above problems.
According to the present invention, pests, particularly excellent repellent persistence effect against flying pests, safe, and strong odor derived from repellent components is suppressed, pest repellent composition suitable for application to the skin, pest retention control composition, A pest repellent method and a pest retention restraint method can be provided.

In the present invention, the "repellent effect against pests" means that even if the pests come into contact with an object, they will leave immediately without stopping, and the composition of the present invention corresponds to a contact repellent composition. That is, the pest repellent effect in the present invention is a repellent or insect repellent or pest repellent that repels the target without contacting the target, such as one that does not attract the target to the target, or one that does not approach the target. On the other hand, it has an insecticidal activity and is different from an insecticide that controls pests.
The composition of the present invention, even if the pests such as mosquitoes accrete on the object to which they are applied or adhered, the pests do not stay in place and immediately leave, thereby exhibiting the effect of repelling the pests. is there. Specifically, after a pest such as a mosquito has settled on the skin of an animal such as a human, a retention-suppressing effect of not retaining within a predetermined area of the skin surface for a time sufficient to insert a pricking needle, specifically, for 1 second or more. Have. Such an effect is based on a pest repellent principle which has not existed in the past, and is safe without side effects such as rough skin. Therefore, the composition of the present invention can be used as a pest retention control composition.
In the present invention, the "repellent repellent effect against pests" means that the repellent effect is maintained even after a lapse of time after the composition of the present invention is applied to an object. In the following description, the repellent sustaining effect of the present invention, especially against flying pests, will be simply referred to as “repellent sustaining effect”.

The composition of the present invention has a surface tension of 40 mN/m or less at 25° C. as component (A) and a viscosity at 23° C. of 400 mPa·s or less at 25° C. of (a) silicone oil, (b). It contains one or more non-volatile liquid oily components selected from the group consisting of ester oils, (c) ether oils, (d) hydrocarbon oils, (e) aliphatic alcohols, and (f) polyhydric alcohols. By containing the component (A), the repellent sustaining effect against pests, particularly flying pests, is excellent. The reason is not clear, but it is considered as follows.
The present inventors have found that flying pests such as mosquitoes have the property of avoiding retention on the wet surface of the limb in order to avoid the attractive force generated from the accretion surface when the limb becomes wet. Since the limbs of flying pests such as mosquitoes are hydrophobic, a liquid oily component having a surface tension of 40 mN/m or less at 25°C has high affinity with the limbs of flying pests and has a viscosity of 400 mPa·s or less. When the limb of the flying pest comes into contact with the liquid oleaginous component, the contact area between the liquid oleaginous component and the limb of the flying pest becomes sufficiently large in a short time. Therefore, it is considered that when the flying pests land on the surface to which the component (A) is applied or adhered, the limbs get wet, and at that time, the attractive force generated from the landing surface is avoided and the landing fly away without stopping at the landing point.
The term "accretion" in the present invention means that flying insects such as mosquitoes contact an object for a time of less than 1 second. Further, the term "retention" in the present invention means that flying insects such as mosquitoes are kept in contact with the object for 1 second or longer.

Further, the composition of the present invention still has room for improvement from the viewpoint of sufficient repellent sustaining effect in actual use, when the component (A) alone is used. Therefore, in addition to the component (A), a specific amount of the component (B) described later is contained, and the component (B) is applied to the limbs of the flying pest together with the component (A), thereby reducing the odor derived from the component (B). However, it is considered that the excellent repellent sustaining effect could be realized.

<Component (A): Non-volatile liquid oil component>
The component (A) contained in the composition of the present invention has a surface tension at 25° C. of 40 mN/m or less and a viscosity at 23° C. measured by a B-type rotational viscometer of 400 mPa·s or less, (a) silicone oil, ( It is at least one non-volatile liquid oily component selected from the group consisting of b) ester oil, (c) ether oil, (d) hydrocarbon oil, (e) aliphatic alcohol, and (f) polyhydric alcohol.

The component (A) is preferably liquid at 20° C., more preferably liquid at 15° C., further preferably liquid at 10° C., from the viewpoint of easy application to the skin and improvement of the repellent sustaining effect. Is a non-volatile oil.
"Liquid" of the liquid oily component is judged to be liquid in the liquid-solid judgment test according to the American Society for Testing and Materials standard "ASTM D 4359-90: Standard Test Method for Determining Whether a Material is a Liquid or Solid". Means what is done.
The component (A) is preferably a poorly water-soluble or water-insoluble component from the viewpoint of improving the repellent persistence effect against pests. Specifically, the amount dissolved in 100 g of water at 20° C. is preferably 1 g. Or less, more preferably 0.5 g or less, still more preferably 0.1 g or less, and even more preferably substantially 0 g.

As the liquid oil component of the component (A) used in the present invention, a non-volatile liquid oil component is used from the viewpoint of improving the repellent sustaining effect. Here, the non-volatile liquid oily component in the present invention means one having a volatility of 50% or less after drying at 25° C. for 60 minutes under 1 atm, preferably at 25° C. under 1 atm, It has a volatility of 50% or less after drying for 120 minutes. The volatilization rate is measured according to German test standard DIN 53249, and specifically, it is carried out by the following procedures 1 to 4.
1. The weight (P(g)) of a round filter paper having a diameter of 150 mm is measured.
2. A sample of 0.3 g of the component (A) is dropped on a round filter paper with a pipette, and immediately after that, the weight of the filter paper (W ₀ (g)) is measured.
3. The weight of the filter paper is weighed in the absence of aeration at 25° C., 5 minute intervals, with a weight measurement with an accuracy of about 0.001 g. The weight of the filter paper measured 60 minutes after measuring 2 is W ₆₀ (g).
4. The volatility (%) is the value derived from the calculation formula {((W ₀ -P)-(W ₆₀ -P))/(W ₀ -P)}×100.
The lower the volatilization rate, the longer the liquid oil component stays when applied to the skin, and the higher the repellent sustaining effect.
When two or more liquid oily components are used, the volatility of the liquid oily component means the volatility of the mixture of two or more liquid oily components. Therefore, as long as the volatilization rate of the mixture is within the above range, liquid oily components having a volatility rate of more than 50% after drying at 25° C. for 60 minutes under 1 atm may be used in combination.

The surface tension of the component (A) at 25° C. is preferably 15 mN/m or more, more preferably 17 mN/m or more from the viewpoint of availability, and 40 mN/m or less from the viewpoint of improving the repellent sustaining effect. , Preferably 30 mN/m or less, more preferably 28 mN/m or less, further preferably 25 mN/m or less, even more preferably 23 mN/m or less, even more preferably 21 mN/m or less. Further, even if the surface tension at 25° C. itself is more than 40 mN/m by itself, by using a mixture with another liquid oily component, the repellent sustaining effect is exhibited if the surface tension is lowered.
The viscosity of the component (A) at 23° C. measured by a B-type rotational viscometer is preferably 1 mPa·s or more from the viewpoint of suppressing volatility and improving the repellency sustaining effect, and from the viewpoint of improving the repellency sustaining effect, 400 mPas ·S or less, preferably 300 mPa·s or less, more preferably 210 mPa·s or less, further preferably 100 mPa·s or less, even more preferably 60 mPa·s or less, even more preferably 40 mPa·s or less, even more preferably Is 30 mPa·s or less. When two or more liquid oily components having different viscosities are used, it means the viscosity as a mixture of these liquid oily components.
The surface tension and viscosity of the component (A) are measured by the methods described in Examples.

(A) Silicone Oil As the silicone oil, from the viewpoint of improving the repellent sustaining effect, a group consisting of dimethylpolysiloxane, dimethiconol (dimethylpolysiloxane having a hydroxy group at the terminal), methylphenylpolysiloxane, modified silicone, and cyclic silicone. One or more selected from are preferable.
Examples of the modified silicone include amino-modified silicone (dimethylpolysiloxane having an amino group), polyether-modified silicone, glyceryl-modified silicone, amino derivative silicone, carboxy-modified silicone, fatty acid-modified silicone, alcohol-modified silicone, aliphatic alcohol-modified silicone, epoxy. Examples include modified silicone, fluorine-modified silicone, alkyl-modified silicone and the like.

Among the silicone oils, one or more selected from the group consisting of dimethylpolysiloxane, dimethiconol, methylphenylpolysiloxane, and modified silicone is preferable from the viewpoint of improving the repellent sustaining effect, and dimethylpolysiloxane, dimethiconol, and polyether. One or more selected from the group consisting of modified silicone is more preferable, and dimethylpolysiloxane is even more preferable.

Examples of dimethylpolysiloxane include one or more selected from the group consisting of linear dimethylpolysiloxane and cyclic dimethylpolysiloxane. Among these, linear dimethylpolysiloxane is more preferable from the viewpoint of improving the repellent sustaining effect.
Examples of commercially available straight-chain dimethylpolysiloxanes are Shin-Etsu Chemical Co., Ltd.'s KF-96 series, Toray Dow Corning's SH200C series, "2-1184 Fluid", Momentive Performance Materials, Inc. “Silsoft DML”, “Element14 PDMS 5-JC”, “Element14 PDMS 10-JC”, “Element14 PDMS 20-JC” and the like.

(B) Ester oil As an ester oil, from the viewpoint of improving the repellent sustaining effect, an ester oil represented by any of the following general formulas (1) to (3) and a dialkyl represented by the following general formula (4) Carbonate compounds are preferred.

R ¹ -COO-R ² (1)
In the general formula (1), R ¹ may be substituted with a hydroxyl group and is a linear or branched alkyl group having 7 to 23 carbon atoms or an aromatic hydrocarbon group having 6 to 24 carbon atoms. R ² represents a linear or branched alkyl group or alkenyl group having 1 to 22 carbon atoms.
When R ¹ is an alkyl group, the number of carbon atoms is preferably 7 or more, more preferably 9 or more, from the viewpoint of improving the repellent sustaining effect, and from the viewpoint of improving the feel when applied to the skin, It is preferably 21 or less, more preferably 17 or less. When R ¹ is an aromatic hydrocarbon group, the number of carbon atoms is preferably 8 or more, more preferably 10 or more, and preferably 22 or less from the viewpoint of improving the feel when applied to the skin. , And more preferably 20 or less.
R ² is preferably a linear or branched alkyl group or alkenyl group having 20 or less carbon atoms, more preferably 18 or less carbon atoms, from the viewpoint of improving the feel when applied to the skin. Further, from the viewpoint of improving the feel when applied to the skin, at least one of R ^{1 and} R ² is preferably a branched alkyl group.

Examples of the ester oil represented by the general formula (1) include myristyl 2-ethylhexanoate, cetyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, isodecyl octanoate, isocetyl octanoate, isononyl isononanoate, and isotridecyl isononanoate. , Cetearyl isononanoate, octyl propyl heptanoate, methyl laurate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, isocetyl palmitate, 2-ethylhexyl stearate, isocetyl stearate, stearic acid Isotridecyl, isopropyl isostearate, octyl isostearate, isosetyl isostearate, isostearyl isostearate, 2-ethylhexyl hydroxystearate, methyl oleate, oleyl oleate, isobutyl oleate, oleyl erucate, alkyl benzoate (alkyl carbon number) 12 to 15), and one or more selected from the group consisting of diethylhexyl naphthalene dicarboxylate and the like.

(R ³ O)-CH ₂ CH(OR ⁴ )-CH ₂ (OR ⁵ ) (2)
In the general formula (2), R ³ , R ⁴ and R ⁵ are each independently a hydrogen atom or a group represented by the following general formula (2-1) and are not all hydrogen atoms. ..
-CO-R ⁶ (2-1)
(In the formula, R ⁶ represents an alkyl group or an alkenyl group having 7 or more and 23 or less, preferably 17 or less carbon atoms, which may be substituted by a hydroxyl group.)
Examples of the ester oil represented by the general formula (2) include one or more selected from the group consisting of glyceryl tri-2-ethylhexanoate and glyceryl tricaprylate. Jojoba oil, olive oil, sunflower oil, soybean oil, peanut oil, rapeseed oil, almond oil, palm oil, coconut oil, castor oil, wheat germ oil, grape seed oil, thistle oil, evening primrose oil, macadamia nut oil, corn germ oil, and It may be a plant-derived ester oil such as avocado oil.

R ⁷ O-(AO)m-COR ⁸ (3)
In the general formula (3), R ⁷ represents an aromatic hydrocarbon group having 6 to 20 carbon atoms, and R ⁸ represents an alkyl group or alkenyl group having 1 to 23 carbon atoms. AO represents an alkyleneoxy group having 2 to 4 carbon atoms, and m represents an average added mole number of 1 to 50.
R ⁷ preferably has 6 or more carbon atoms from the viewpoint of improving the repellent sustaining effect, and preferably 12 or less, more preferably 10 or less from the viewpoint of improving the feel when applied to the skin. Is an aromatic hydrocarbon group, more preferably a benzyl group.
R ⁸ has preferably 7 or more carbon atoms, more preferably 11 or more carbon atoms from the viewpoint of improving the repellent sustaining effect, and preferably 21 or less from the viewpoint of improving the feel when applied to the skin. , And more preferably an alkyl group having 15 or less.
The AO group is preferably a propyleneoxy group from the viewpoint of improving the repellency sustaining effect, and m is preferably 1 from the viewpoint of improving the repellency sustaining effect and improving the feel when applied to the skin. The above is 10 or less, more preferably 1 or more and 5 or less.
Examples of the ester oil represented by the general formula (3) include benzyl alcohol 3 mol adduct with benzyl alcohol and myristic acid ester (“Kurodamol STS” by Croda Co.), benzyl alcohol 3 mol adduct with 2-ethyl ester. One or more selected from the group consisting of an ester of hexanoic acid (“Klodamol SFX” manufactured by Croda Co., Ltd.).

R ⁹ —O—(CH ₂ CH ₂ O)v—CO—(OCH ₂ CH ₂ )w—OR ¹⁰ (4)
In the general formula (4), R ⁹ and R ¹⁰ each independently represent an alkyl group or an alkenyl group having 6 to 22 carbon atoms, and v and w are each independently 0 or an average of 1 to 50. Indicates the number of added moles.
R ⁹ and R ¹⁰ preferably have 8 or more carbon atoms from the viewpoint of improving the repellent sustaining effect, and preferably 18 or less, and more preferably from the viewpoint of improving the feel when applied to the skin. It is an alkyl group of 12 or less.
v and w are preferably 0 or a number of 1 or more and 5 or less, and more preferably 0, from the viewpoint of improving the feel when applied to the skin.
Examples of the dialkyl carbonate compound represented by the general formula (4) include dioctyl carbonate (“Cetirol CC” manufactured by Cognis Corp.).

Examples of ester oils other than the above include esters of polyhydric carboxylic acids and alcohols, esters of polyhydric alcohols other than glycerin and fatty acids, and the like.
Specific examples thereof include a group consisting of diisopropyl dimer, diisopropyl adipate, diethoxyethyl succinate, 2-ethylhexyl succinate, propanediol dicaprate, neopentyl glycol dicaprate, neopentyl glycol di2-ethylhexanoate, and the like. One or more selected from Among these, from the viewpoint of improving the repellent sustaining effect, esters of neopentyl glycol and fatty acids are preferable, and one or more selected from the group consisting of neopentyl glycol dicaprate and neopentyl glycol di2-ethylhexanoate is preferred. More preferable.
Among the above-mentioned (b) ester oils, one or more kinds selected from the group consisting of ester oils represented by the general formula (1) and esters of neopentyl glycol and fatty acids are preferable.

(C) Ether Oil As the ether oil, a dialkyl ether compound represented by the following general formula (5) or a polyoxyalkylene alkyl ether compound represented by the following general formula (6) is used from the viewpoint of improving the repellent sustaining effect. Is preferred.

R ¹¹ -OR ¹² (5)
In the general formula (5), R ¹¹ and R ¹² are each independently a linear or branched alkyl group or alkenyl group having 6 to 22 carbon atoms, or an aromatic hydrocarbon group having 6 to 24 carbon atoms. Indicates.
R ¹¹ and R ¹² are preferably alkyl groups from the viewpoint of improving the repellency sustaining effect, and their carbon number is preferably 8 or more from the viewpoint of improving the repellency sustaining effect, and applied to the skin. From the viewpoint of improving the feel at the time, it is preferably 18 or less, more preferably 16 or less, still more preferably 12 or less.
Examples of the dialkyl ether compound represented by the general formula (5) include dihexyl ether, dioctyl ether (“Cetol OE” manufactured by Cognis Co., Ltd.), dicaprylyl ether, cetyl-1,3-dimethylbutyl ether (“ASE-166K” manufactured by Kao Corporation). ]) and the like.

R ¹³ --O--(PO)r(EO)s--H (6)
In the general formula (6), R ¹³ represents an alkyl group or an alkenyl group having 6 to 22 carbon atoms, PO represents a propyleneoxy group, and EO represents an ethyleneoxy group. r represents an average added mole number of 0.1 or more and 15 or less, and s represents an average added mole number of 0 or more and 10 or less. When s is not 0, the addition form of PO and EO may be random or block.
The carbon number of R ¹³ is preferably 8 or more from the viewpoint of improving the repellent sustaining effect, and preferably 20 or less, more preferably 18 or less from the viewpoint of improving the feel when applied to the skin. And more preferably 12 or less.
The average added mole number r is preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, from the viewpoint of improving the repellent sustaining effect, and from the viewpoint of improving the feel when applied to the skin. Therefore, it is preferably 13 or less, more preferably 10 or less, and the average addition mole number s is preferably 5 or less, more preferably 1 or less, and further preferably from the viewpoint of improving the feel when applied to the skin. Is 0.
As the polyoxyalkylene alkyl ether compound represented by the general formula (6), polypropylene glycol, polyoxypropylene octyl ether, polyoxypropylene decyl ether having an average added mole number r of propyleneoxy groups of 3 or more and 10 or less, And at least one selected from the group consisting of polyoxypropylene lauryl ether.
Among the above-mentioned (c) ether oil, the ether oil represented by the general formula (5) is preferable from the viewpoint of improving the repellent sustaining effect.

(D) Hydrocarbon Oil Examples of the hydrocarbon oil include liquid paraffin, liquid isoparaffin, squalane, isohexadecane, isoeicosan, hydrogenated polyisobutene, light liquid isoparaffin, heavy liquid isoparaffin, α-olefin oligomer, and cycloparaffin. ..
Among these, at least one selected from the group consisting of liquid paraffin, liquid isoparaffin, and squalane is preferable from the viewpoint of improving the repellent sustaining effect and improving the feel when applied to the skin.

(E) Aliphatic alcohol As the aliphatic alcohol, a monovalent chain or cyclic aliphatic alcohol can be mentioned, and from the viewpoint of improving the repellent sustaining effect, a monovalent chain aliphatic alcohol is preferable. The carbon number of the aliphatic alcohol is preferably 14 or more, more preferably 18 or more, from the viewpoint of improving the repellent sustaining effect, and from the viewpoint of improving the feel when applied to the skin. The aliphatic alcohol is preferably 28 or less, more preferably 24 or less, still more preferably 22 or less.
The aliphatic alcohol may be linear or branched, and may be saturated or unsaturated, but has a good viewpoint of improving the repellent sustaining effect and a good feel when applied to the skin. From the viewpoint of the above, a branched aliphatic saturated alcohol is preferable.
Examples of the straight-chain aliphatic alcohol include oleyl alcohol and the like, and examples of the branched-chain aliphatic saturated alcohol include butyloctanol, butyldecanol, hexyldecanol, octyldodecanol and the like.
Among these, branched-chain aliphatic saturated alcohols are preferable, from the viewpoint of improving the repellent sustaining effect and improving the feel when applied to the skin, consisting of hexyldecanol, hexyldecanol, and octyldodecanol. One or more selected from the group is preferable.

(F) Polyhydric alcohol Examples of the polyhydric alcohol include aliphatic alcohols having 2 or more carbon atoms, aromatic alcohols, sugar alcohols having 4 or more carbon atoms, and may be saturated or unsaturated. From the viewpoint of improving the feel when applied to the skin, one or more selected from the group consisting of an aliphatic alcohol having 2 to 10 carbon atoms, an aromatic alcohol, and a sugar alcohol having 4 to 10 carbon atoms preferable.
Among the polyhydric alcohols, aliphatic alcohols having 2 or more carbon atoms include ethylene glycol, propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol. And dihydric alcohols such as diethylene glycol, dipropylene glycol, and hexylene glycol.
Examples of the sugar alcohol include sorbitol, erythritol, pentaerythritol, xylitol, mannitol and the like.

Among the above liquid oily components, from the viewpoint of improving the repellent sustaining effect, (a) silicone oil, (b) ester oil, (c) ether oil, (d) hydrocarbon oil, and (f) polyhydric alcohol. At least one selected from the group consisting of (a) silicone oil, (b) ester oil, and (d) hydrocarbon oil is more preferably one or more, and (a) silicone oil and One or more selected from the group consisting of (d) hydrocarbon oils are more preferable, and (a) silicone oils are even more preferable. (A) Of the silicone oils, one or more selected from the group consisting of dimethylpolysiloxane, dimethiconol, methylphenylpolysiloxane, and modified silicone is preferable, and dimethylpolysiloxane is more preferable, from the viewpoint of improving the repellent sustaining effect. It is at least one selected from the group consisting of siloxane, dimethiconol, and polyether-modified silicone, more preferably dimethylpolysiloxane, and even more preferably linear dimethylpolysiloxane.

(Content of component (A))
The content of the component (A) in the composition of the present invention is 13% by mass or more, preferably 20% by mass or more, more preferably 25% by mass or more, from the viewpoint of improving the repellent sustaining effect. From the viewpoint of improving the sustaining effect, suppressing the odor derived from component (A), improving the usability of the composition, and ensuring the long-term storage stability of the composition, 99.995% by mass or less, It is preferably 80% by mass or less, more preferably 50% by mass or less, still more preferably 40% by mass or less, still more preferably 35% by mass or less. The content of the component (A) in the composition of the present invention is 13 to 99.995% by mass, preferably 13 to 80% by mass, more preferably 13 to 50% by mass, and The amount is preferably 20 to 50% by mass, more preferably 20 to 40% by mass, still more preferably 25 to 35% by mass.

<Component (B): repellent essential oil>
The composition of the present invention contains, as the component (B), one or more repellent essential oils selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil. Here, the eucalyptus oil is a repellent essential oil containing eucalyptol oil and lemon eucalyptol oil. The "repellent essential oil" means an essential oil having a pest repellent effect, and for example, citronella oil, lemongrass oil, and eucalyptol oil are licensed in Thailand, and mint pepper oil is licensed in the United States as a repellent ingredient. Mint oil is also widely used as a repellent component.
The "repellent essential oil" includes essential oils (essential oils) obtained by extracting, distilling, or squeezing the components contained in plants, as well as artificially produced synthetic essential oils. For example, citronella oil is from Cymbopogon nardus or Cymbopogon winterianus, lemongrass oil is from Cymbopogon citratus, eucalyptus oil is from Eucalyptus citriodora Eucalyptus L'Heritier spp. The oil is an essential oil obtained from Nepeta sp. such as Nepeta cataria.
Citronella oils are described, for example, in R. Tisserand et al. , "Essential Oil Safety-E-Book: A Guide for Health Care Professionals", Second Edition (2014), p251, and International Fragment Association (IFRA). Hereinafter, the composition of citronella oil will be described as an example based on the description of "Essential Oil Safety-E-Book: A Guide for Health Care Professionals".
Citronella ceyron type
Citronellal 5.2-46.8 mass%
Geraniol 16.8-29.1% by mass
(-)-Citronellol 3.0-21.8% by mass
Citronella Java type
Citronellal 34.8-42.8% by mass
Geraniol 22.1-25.4 mass%
(-)-Citronellol 9.7-11.5% by mass

Component (B) is an existing repellent essential oil, and its repellent effect is well known. However, if it is contained in the composition in an amount of more than 15% by mass, the pest repellent effect is good, but component (B) is derived. Emits a strong odor, and can cause skin problems such as rashes. On the other hand, when the content of the component (B) in the composition is 15% by mass or less, strong odor derived from the component (B) can be suppressed, but the pest repellent sustaining effect tends to decrease. Therefore, in the composition of the present invention, even if the content of the component (B) is 15% by mass or less, by using the component (A) in combination, while suppressing a strong odor derived from the component (B), It is possible to secure the repellent sustaining effect and safety.
As the component (B), one type may be used alone, or two or more types may be contained. Among the components (B), one or more repellent essential oils selected from citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil are preferable from the viewpoint of improving the repellent sustaining effect, and citronella oil, lemongrass oil, and narwhal oil. More preferred is one or more repellent essential oils selected from oils.

(Content of component (B))
The content of the component (B) in the composition of the present invention is 0.005 mass% or more, and preferably 0 from the viewpoint of improving the repellent sustaining effect and suppressing the odor derived from the component (A). It is 0.006 mass% or more, and more preferably 0.008 mass% or more. The content of the component (B) in the composition of the present invention is 15% by mass or less, preferably 10% by mass or less, from the viewpoint of suppressing strong odor and skin troubles derived from the component (B). It is preferably 5% by mass or less, more preferably 2% by mass or less, still more preferably 1% by mass or less, still more preferably 0.5% by mass or less, and even more preferably 0.08% by mass or less. The content of the component (B) in the composition of the present invention is 0.005 to 15% by mass, preferably 0.006 to 10% by mass, more preferably 0.006 to 5% by mass, and further It is preferably 0.006 to 2% by mass, more preferably 0.006 to 1% by mass, even more preferably 0.006 to 0.5% by mass, still more preferably 0.008 to 0.08% by mass. is there.

In addition, the composition of the present invention contains the component (A) and the component (B) as repellent components against pest repellent, and does not contain an effective amount of the other pest repellent, so that the user's allergies and rough skin are prevented. It is preferable from the viewpoint of preventing
The composition of the present invention has a pest repellent sustaining effect even if it does not contain an effective amount of a pest repellent other than the components (A) and (B). In other words, even when the composition of the present invention contains the existing pest repellent other than the components (A) and (B) in an amount less than the lower limit of the effective amount, the pests can be in situ even if they accrete. If the non-retaining property is not retained, the retention suppressing effect of the present invention is exhibited. That is, the composition of the present invention may be substantially free of pest repellents other than the components (A) and (B).

Here, "does not contain an effective amount of pest repellents other than components (A) and (B)" generally means that the content of pest repellents other than components (A) and (B) is In the composition of the present invention, preferably 10% by mass or less, more preferably 6% by mass or less, further preferably 4% by mass or less, even more preferably 3% by mass or less, still more preferably 2% by mass or less, More preferably, it means 1 mass% or less.
The effective amount of the existing pest repellent other than the component (B) can also be referred to the minimum effective amount or the like announced by the manufacturer of each repellent product. For example, among existing pest repellents other than the component (B), the effective amount of DEET (N,N-diethyltoluamide) is 4% by mass or more. Therefore, in the present invention, setting the content of N,N-diethyltoluamide to 3% by mass or less is one of the preferred embodiments of the present invention, and is more preferably 1% by mass or less.

Moreover, the effective amount of the existing pest repellent can also be measured by the repellent evaluation test described below.
(Repellent evaluation test)
100 mated female mosquitoes (Aedes albopictus) are placed in a plastic cage (30×30×30 cm: BugDorm-1 cage) surrounded by a mesh. Approximately 15 cm from the wrist part of Quaratech Super Long Gloves (50 cm) (Azwan Co., Ltd., Catalog number: 3-6432-02) with a 5 cm long × 4 cm rectangular notch on the elbow side, insert your arm To do. Insert the arm into the cage with nothing applied to the exposed area from the incision, and confirm that it will stay for 1 second or more after acclimatizing to mosquitoes at two locations on the exposed area of the skin within 2 minutes. If you do not stay for more than 1 second, prepare a new mosquito. Hereinafter, a stop of 1 second or more is simply referred to as a stop.
The test of the evaluation sample, which is a solution of the pest repellent, is performed by adjusting the concentration with ethanol so that the evaluation sample can be applied at 2 mg/cm ² to the exposed skin (5 cm×4 cm).
A solution having a adjusted concentration is placed on the exposed part using a Pipetman and applied so that it is spread over the entire exposed part of the skin (required solution amount: 40 to 50 μl). After that, let stand for 3 minutes and start the test.
The test is performed by inserting the arm coated with the evaluation sample into a cage for 2 minutes and counting the number of stays. The test is terminated when the vehicle is stopped twice in total, and a test is performed in which the arm is inserted for 2 minutes every 30 minutes until the test is completed. If the second retention is performed at 30 minutes, the repellent effect duration is determined to be 0 minutes, and if the second retention is performed at 60 minutes, the repulsion effect duration is determined to be 30 minutes. The test is carried out on 3 subjects, and the average duration of repellent effect is calculated.
In this test, the concentration of the pest repellent showing an average repellent effect duration of 2 hours or more can be defined as the effective concentration (effective amount) of the pest repellent.
Since the composition of the present invention has a repellent sustaining effect without containing an effective amount of the pest repellent other than the components (A) and (B), it suppresses unpleasant odors and strong odors derived from the pest repellent. It is more preferable that the pest repellent other than the component (A) and the component (B) is not substantially contained from the viewpoint of preventing the occurrence of skin troubles. In the composition of the present invention, the content of the pest repellent other than the component (A) and the component (B) is preferably 0.5% by mass or less, more preferably 0.1% by mass or less, and still more preferably 0. It is not more than 01% by mass, and even more preferably substantially 0% by mass.

As existing pest repellents other than the component (A) and the component (B), in addition to the above-mentioned DEET, icalidin, dimethyl phthalate, 2-ethyl-1,3-hexanediol, p-menthane-3,8-diol , Caran-3,4-diol, di-n-butyl succinate, hydroxyanisole, rotenone, 3-(acetylbutyl)aminopropionic acid ethyl ester, citronellol, α-pinene, geraniol, citronellal, camphor, linalool, 2- In addition to known pest repellent compounds such as undecanone, repellent essential oils other than the component (B) and the like can be mentioned.

In the composition of the present invention, the mass ratio [(B)/(A)] of the component (B) to the component (A) improves the repellent sustaining effect and suppresses the odor derived from the component (A). Therefore, it is preferably 0.0001 or more, more preferably 0.0002 or more, and from the viewpoint of suppressing odor, preferably 0.8 or less, more preferably 0.5 or less, still more preferably 0.05 or less. It is more preferably 0.005 or less, and even more preferably 0.0005 or less. The mass ratio [(B)/(A)] of the component (B) to the component (A) is preferably 0.0001 to 0.8, more preferably 0.0001 to 0.5, It is more preferably 0.0002 to 0.05, still more preferably 0.0002 to 0.005, and still more preferably 0.0002 to 0.0005.

<Component (C): water>
The composition of the present invention preferably contains water as the component (C) from the viewpoint of improving the repellent sustaining effect and the composition having a good feeling in use. The content of the component (C) in the composition is preferably 5% by mass or more, more preferably 10% by mass or more, further preferably from the viewpoint of improving the repellent sustaining effect and the composition having a good feeling in use. Is 35% by mass or more, more preferably 50% by mass or more. From the viewpoint of improving the repellent sustaining effect, it is preferably 86.995% by mass or less, more preferably 85% by mass or less, still more preferably 80% by mass or less, still more preferably 75% by mass or less. .. The content of the component (C) in the composition is preferably 5 to 86.995% by mass, more preferably 5 to 85% by mass, further preferably 10 to 80% by mass, still more preferably 35 to 75% by mass. , And even more preferably 50 to 75% by mass.

INDUSTRIAL APPLICABILITY The present invention can be applied to various composition forms, for example, a non-aqueous composition containing no water, a water-in-oil composition, an oil-in-water composition, and the like. From the viewpoint of suppressing the odor derived from the component (A), an oil-in-water type composition is preferable. In the case of an oil-in-water type composition, the content of the component (C) in the composition is preferably 35% by mass or more, more preferably 40% by mass or more, further preferably 45% by mass. That is all. Further, from the viewpoint of improving the repellent sustaining effect, it is preferably 86.995% by mass or less, more preferably 80% by mass or less, still more preferably 75% by mass or less.
From the viewpoint of improving the repellent sustaining effect, a water-in-oil type composition is preferable. In the case of a water-in-oil type composition, the content of the component (C) in the composition is preferably 5% by mass or more from the viewpoint of improving the feel when applied to the skin, It is more preferably 10% by mass or more, still more preferably 15% by mass or more. Further, from the viewpoint of improving the repellent sustaining effect and from the viewpoint of improving the long-term storage stability of the composition, it is preferably 40% by mass or less, more preferably 30% by mass or less, and further preferably 25% by mass or less. ..

When the composition of the present invention contains the component (C), the mass ratio [(A)/(C)] of the component (A) and the component (C) is preferably from the viewpoint of improving the repellent sustaining effect. Is 0.05 or more, more preferably 0.1 or more, further preferably 0.2 or more, and from the same viewpoint, preferably 20 or less, more preferably 10 or less, still more preferably 5 or less, still more preferably It is 1 or less. The mass ratio [(A)/(C)] of the component (A) and the component (C) is preferably 0.05 to 20, more preferably 0.1 to 10, and further preferably It is 0.1 to 5, more preferably 0.2 to 5, and even more preferably 0.2 to 1.

<Component (D): Thickener>
The composition of the present invention may further contain a thickener as the component (D). From the viewpoint of improving the repellent persistence effect by adjusting the fluidity after application to the skin, the viewpoint of ensuring good coatability to the skin by well dispersing or dissolving each component, and the long-term storage stability of the composition. From the viewpoint of ensuring the property, as the thickener, those having an appropriate emulsifying ability (that is, surfactant ability) are preferable. In the present invention, an agent having an emulsifying ability and a thickening effect is a thickener.
Examples of component (D) include water-soluble cationic polymers, anionic polymers, nonionic polymers, and amphoteric polymers or dipolar polymers.

The content of the component (D) in the composition of the present invention is such that the repellent sustaining effect is improved, that each component is satisfactorily dispersed or dissolved to ensure excellent coatability on the skin, and the composition From the viewpoint of ensuring long-term storage stability, it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.1% by mass or more, and from the same viewpoint, preferably 5% by mass. % Or less, more preferably 3% by mass or less, and further preferably 1% by mass or less. When the composition of the present invention contains a thickener having surface active ability, the content of the other surfactants in the composition is preferably 1.5% by mass or less, more preferably It is 1 mass% or less.

<Other ingredients>
The composition of the present invention is a component other than the above, for example, a surfactant, an antiseptic, a colorant, a repellent, a repellent essential oil other than the component (B), a moisturizer, a fragrance, within a range that does not impair the effects of the invention. A pH adjuster or the like can be contained as appropriate. In addition, vitamins, blood circulation promoters, active oxygen scavengers, anti-inflammatory agents, whitening agents, bactericidal agents and other medicinal and physiologically active ingredients can also be contained. In addition, it can be used for other purposes such as using a fragrance as a germicide.

The composition of the present invention can be produced by a conventional method. For example, it can be produced by mixing the components (A) and (B) and, if necessary, the component (C), a thickener, a surfactant, a volatile oil, etc., and stirring the mixture using a known device. it can.

Although the pest targeted by the composition of the present invention is not particularly limited, it is more effective against flying pests.
“Flying pests” are pests that approach animals such as humans while flying, and suck blood from their skin, pests that carry pathogenic bacteria while flying, even if they do not suck blood, and flying itself is not suitable for humans. Pests that give a pleasant sensation.
Specific examples of flying pests include mosquitoes such as Culex pipiens, Culex tritaeniorhynchus, Culex pipiens, Culex pipiens, Aedes aegypti, Aedes albopictus, Aedes albopictus, Aedes albopictus, Gambie anopheles mosquito, Black mosquito mosquito, Acacia mosquitoes, Acacia lucidum, Acacia lucidum, Acacia mosquito, Acacia mosquitoes, Acacia mosquitoes. Black flies such as blue flies, flesh flies, flesh flies, black flies, blow flies, flesh flies, sand flies, onion flies, fruit flies, fruit flies, etc.; Nukaka such as Oshimanukaka and chicken Nakaka; bees such as yellow hornet, yellow-tailed wasp and bee.
Among them, the composition of the present invention is particularly excellent in repellent sustaining effect against mosquitoes. Among the above-mentioned mosquitoes, it has an excellent repellent sustaining effect on Culex pipiens, Culex pipiens, Culex pipiens, Aedes aegypti, Aedes aegypti, and Aedes albopictus.

[Pest repellent method, retention prevention method]
The pest repellent method of the present invention is performed by applying the pest repellent composition of the present invention to the surface of human skin.
Further, the pest retention control method of the present invention prevents the pest from retaining on the skin of a human by attaching the pest retention control composition of the present invention to the limbs of a pest, particularly a flying pest. Hereinafter, these methods are also collectively referred to as the “method of the present invention”.

Here, “applying to the skin surface” includes not only directly applying the composition to the skin surface with a hand or the like, but also applying the composition to the skin surface by spraying or the like.
The amount of the composition applied to the skin surface is preferably 0.1 mg or more, more preferably 0.2 mg or more, still more preferably 0.25 mg or more per 1 cm ² from the viewpoint of improving the repellent sustaining effect. .. In addition, the upper limit of the coating amount is preferably 10 mg or less, more preferably 8 mg or less, still more preferably 5 mg or less per 1 cm ² from the viewpoint of suppressing stickiness and economical efficiency.

The composition of the present invention has excellent repellent persistence effect against mosquitoes, is safe, suppresses strong odors derived from repellent components, and from the viewpoint of providing a repellent composition excellent in usability, the following components (A) to (C) are provided. It is preferable that the oil-in-water type mosquito repellent composition or the mosquito retention control composition contains 10% by mass or less of the pest repellent other than the components (A) and (B).
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) citronella oil, lemongrass oil, eucalyptus oil, eucalyptus oil, peppermint oil, and dogmint One or more repellent essential oils selected from the group consisting of oils: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less

The composition of the present invention has excellent repellent persistence effect against mosquitoes, is safe, suppresses strong odors derived from repellent components, and from the viewpoint of providing a repellent composition excellent in usability, the following components (A) to (C) are provided. And the mass ratio [(A)/(C)] of the component (A) and the component (C) is 0.2 or more and 5 or less, and pest repellent other than the component (A) and the component (B) is avoided. It is preferable that the composition is an oil-in-water type mosquito repellent composition or a mosquito retention-preventing composition having an agent content of 10% by mass or less.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) 1 selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil Repellent essential oil of seeds or more: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less

The composition of the present invention has excellent repellent persistence effect against mosquitoes, is safe, suppresses strong odors derived from repellent components, and from the viewpoint of providing a repellent composition excellent in usability, the following components (A) to (C) are provided. And the mass ratio [(B)/(A)] of the component (B) to the component (A) is 0.0001 or more and 0.5 or less, and the mass of the component (A) and the component (C). The ratio [(A)/(C)] is 0.2 or more and 5 or less, and the content of the pest repellent other than the component (A) and the component (B) is 10% by mass or less, an oil-in-water type It is preferably a mosquito repellent composition or a mosquito retention prevention composition.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) 1 selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil Repellent essential oil of seeds or more: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less

The composition of the present invention has excellent repellent persistence effect against mosquitoes, is safe, suppresses strong odor derived from repellent components, and provides a repellent composition having excellent feeling of use, and the following components (A) to (D) And the mass ratio [(B)/(A)] of the component (B) to the component (A) is 0.0001 or more and 0.5 or less, and the mass of the component (A) and the component (C). The ratio [(A)/(C)] is 0.2 or more and 5 or less, and the content of the pest repellent other than the component (A) and the component (B) is 10% by mass or less, an oil-in-water type It is preferably a mosquito repellent composition or a mosquito retention prevention composition.
(A) One or more selected from the group consisting of silicone oils, ester oils, and hydrocarbon oils having a surface tension of 40 mN/m or less at 25° C. and a viscosity at 23° C. of not more than 400 mPa·s by a B type rotational viscometer. Non-volatile liquid oily component of: 13% by mass or more and 50% by mass or less (B) one or more repellent essential oils selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and mint oil: 0.005% by mass or more 15 mass% or less (C) water: 35 mass% or more and 86.995 mass% or less (D) thickener: 0.05 mass% or more and 3 mass% or less

The pest repellent method of the present invention is a method of repelling a pest insect even if the pest insect such as a mosquito accretes on an object to which the composition of the present invention is applied or attached, because the pest insect does not stay in place. Specifically, it is said that pests such as mosquitoes do not stay on the skin surface of animals for a time that allows insertion of a needle after accretion on the skin of animals such as humans, specifically, for example, 1 second or longer. It has an effect of suppressing retention. Such an effect is based on a pest repellent principle which has not existed in the past, and is safe without side effects such as rough skin.

Regarding the above-described embodiment, the present invention further discloses the following embodiments.
<1>
An oil-in-water type that contains the following components (A) and (B) and has a mass ratio [(B)/(A)] of the component (B) to the component (A) of 0.0001 or more and 0.8 or less. A pest repellent composition or a pest retention inhibiting composition.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13% by mass or more and 99.995% by mass or less (B) consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected from the group: 0.005 mass% or more and 15 mass% or less <2>
The mass ratio [(B)/(A)] of the component (B) to the component (A) is 0.0002 or more, preferably 0.0003 or more, and 0.5 or less, preferably 0.05 or less, more preferably Is 0.005 or less, more preferably 0.0005 or less, the composition according to <1>.
<3>
The content of the pest repellent other than the components (A) and (B) is 10% by mass or less, preferably 6% by mass or less, more preferably 4% by mass or less, further preferably 3% by mass or less, still more preferably The composition according to <1> or <2>, which is 2% by mass or less, and more preferably 1% by mass or less.
<4>
The composition according to <3>, wherein the pest repellent other than the components (A) and (B) is DEET.
<5>
The surface tension of the component (A) at 25° C. is 15 mN/m or more, preferably 17 mN/m or more and 30 mN/m or less, preferably 28 mN/m or less, more preferably 25 mN/m or less, further preferably 23 mN/m. The composition according to any one of <1> to <4>, which is m or less, and more preferably 21 mN/m or less.
<6>
The viscosity of the component (A) at 23° C. measured by a B-type rotational viscometer is 1 mPa·s or more and 300 mPa·s or less, preferably 210 mPa·s or less, more preferably 100 mPa·s or less, further preferably 60 mPa·s. The composition according to any one of <1> to <5>, which is more preferably 40 mPa·s or less, still more preferably 30 mPa·s or less.
<7>
Component (A) is one or more selected from the group consisting of silicone oil, ester oil, ether oil, and hydrocarbon oil, preferably one or more selected from the group consisting of silicone oil, ester oil, and hydrocarbon oil, The composition according to any one of <1> to <6>, which is more preferably one or more selected from the group consisting of silicone oils and hydrocarbon oils, and further preferably silicone oils.
<8>
The content of the component (A) is 20% by mass or more, preferably 25% by mass or more, 80% by mass or less, preferably 50% by mass or less, more preferably 40% by mass or less, and further preferably 35% by mass or less. The composition according to any one of <1> to <7>.
<9>
Component (B) is at least one selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and mint oil, and preferably one or more selected from the group consisting of citronella oil oil, lemongrass oil, and mint oil. , And more preferably one or more repellent essential oils selected from the group consisting of citronella oil oil and lemongrass oil, according to any one of <1> to <8>.
<10>
The content of the component (B) is 0.006 mass% or more, preferably 0.008 mass% or more, and 10 mass% or less, preferably 5 mass% or less, more preferably 2 mass% or less, and further preferably 1 The composition according to any one of <1> to <9>, which is less than or equal to mass%, more preferably less than or equal to 0.5% by mass, still more preferably less than or equal to 0.08% by mass.

<11>
The composition according to any one of <1> to <10>, which contains water as the component (C).
<12>
The content of the component (C) is 5% by mass or more, preferably 10% by mass or more, more preferably 35% by mass or more, further preferably 50% by mass or more, and 86.995% by mass or less, preferably 85% by mass. The composition according to <11>, which is more preferably 80% by mass or less, and further preferably 75% by mass or less.
<13>
It is an oil-in-water composition, and the content of the component (C) in the composition is preferably 35% by mass or more, more preferably 40% by mass or more, still more preferably 45% by mass or more, and preferably 86. The composition according to <11> or <12>, which is 995% by mass or less, preferably 80% by mass or less, more preferably 75% by mass or less.
<14>
It is a water-in-oil type composition, and the content of the component (C) in the composition is 5% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, and 40% by mass or less, preferably Is 30 mass% or less, more preferably 25 mass% or less, the composition according to <11> or <12>.
<15>
The mass ratio [(A)/(C)] of the component (A) and the component (C) is 0.05 or more, preferably 0.1 or more, more preferably 0.2 or more, and 20 or less, preferably The composition according to any one of <11> to <14>, which is 10 or less, more preferably 5 or less, and further preferably 1 or less.
<16>
Further, a thickener is preferably added in an amount of 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.1% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass. The composition according to any one of <1> to <15>, which is contained in an amount of 1% by mass or less, more preferably 1% by mass or less.
<17>
An oil-in-water type mosquito repellent composition or mosquito repellent control, which contains the following components (A) to (C) and contains 10% by mass or less of a pest repellent other than the components (A) and (B). Composition.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less <18>
The following components (A) to (C) are contained, and the mass ratio [(A)/(C)] of the components (A) and (C) is 0.2 or more and 5 or less, and the components (A) And an oil-in-water type mosquito repellent composition or a mosquito retention control composition having a content of a pest repellent other than the component (B) of 10% by mass or less.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) 1 selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil Repellent essential oil of at least seed: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less <19>
It contains the following components (A) to (C), and the mass ratio [(B)/(A)] of the component (B) to the component (A) is 0.0001 or more and 0.5 or less. ) And the component (C) in a mass ratio [(A)/(C)] of 0.2 or more and 5 or less, and the content of the pest repellent other than the components (A) and (B) is 10 mass. % Or less, an oil-in-water type mosquito repellent composition or a mosquito retention control composition.
(A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily components selected from the group consisting of polyhydric alcohols: 13% by mass or more and 50% by mass or less (B) 1 selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and narwhal oil Repellent essential oil of at least seed: 0.005 mass% or more and 15 mass% or less (C) Water: 35 mass% or more and 86.995 mass% or less <20>
It contains the following components (A) to (D), and the mass ratio [(B)/(A)] of the component (B) to the component (A) is 0.0001 or more and 0.5 or less. ) And the component (C) in a mass ratio [(A)/(C)] of 0.2 or more and 5 or less, and the content of the pest repellent other than the components (A) and (B) is 10 mass. % Or less, an oil-in-water type mosquito repellent composition or a mosquito retention control composition.
(A) One or more selected from the group consisting of silicone oils, ester oils, and hydrocarbon oils having a surface tension of 40 mN/m or less at 25° C. and a viscosity at 23° C. of not more than 400 mPa·s by a B type rotational viscometer. Non-volatile liquid oily component of: 13% by mass or more and 50% by mass or less (B) one or more repellent essential oils selected from the group consisting of citronella oil, lemongrass oil, eucalyptus oil, and mint oil: 0.005% by mass or more 15% by mass or less (C) Water: 35% by mass or more and 86.995% by mass or less (D) Thickener: 0.05% by mass or more and 3% by mass or less <21>
A method for repelling harmful insects, which comprises applying the composition according to any one of <1> to <20> to the surface of human skin.
<22>
A method for suppressing the retention of pests, which prevents the pests from staying on human skin by attaching the composition according to any one of <1> to <20> to the limbs of the pests.

Hereinafter, the present invention will be described by way of examples, but the present invention is not limited to the scope of the examples. In this example, various measurements and evaluations were performed by the following methods.

(Surface tension of liquid oil component)
The surface tension of the liquid oily component is a surface tension measured in an environment of 25° C. by an Wilhelmy method using a platinum plate using an automatic surface tensiometer “Tensiometer K100” (KRUSS).

(Viscosity of liquid oil component)
As a B-type rotational viscometer according to JIS K7117-1:1999, Toki Sangyo Co., Ltd. "Viscometer TVB-10" was used. It is difficult to accurately measure all the components to be measured under one measurement condition because the viscosity values of the respective components differ greatly from sample to sample. Then, it measured using two types of rotors. The viscosity was first measured using a rotor M2 in a 23° C. environment at a rotation speed of 12 rpm. At this time, a component having a viscosity of 2500 mPa·s or more was measured again at a rotation speed of 6 rpm to obtain a viscosity value.
On the other hand, a component having a viscosity of 20 mPa·s or less was measured again by using an L adapter, which is a rotor for low viscosity, at a rotation speed of 30 rpm under an environment of 23° C. to obtain a viscosity value. ..

(Evaluation of repellent sustaining effect against pests)
(I) Preparation of Aedes albopictus For Aedes albopictus, Eggs of Aedes albopictus purchased from Sumitomo Techno Service Co., Ltd. are cultivated in a cage at room temperature under conditions of 27° C. and relative humidity (RH) 60% to grow into adults. used.
A transparent plastic pan was filled with water for about 1 cm, and a filter paper on which the purchased eggs were laid was placed and hatched into pupae. Then, the hatched pupae were fed with tropical fish feed (tetramine) as larvae feed every day. One week later, the pupae were collected with a dropper, transferred to a 20 mL plastic cup, and transferred to a cage with a net. The pupae were fed with adult foods containing 10% by mass sucrose in a 25 mL plastic tube. After emergence, males and females were bred in the same cage for 5 days for mating. After 5 days of breeding, adult worms were collected using a fluke tube, males and females were visually separated after anesthesia on ice for 5 minutes, and only females were collected and used for evaluation.

(II) Measurement of Repellent Effect Duration About 100 female Aedes albopictus were transferred to a plastic cage (30×30×30 cm), and the test was conducted under the conditions of 27° C. and relative humidity (RH) 60%. A hole having a size of 4×5 cm was made in the forearm of a rubber glove having a size to cover the subject's arm, and the composition of each example was applied uniformly so as to be ² mg/cm ² .
Then, for activation of Aedes albopictus, a plastic gauge was blown for 5 seconds. The test was carried out by placing the forearm immediately after applying the composition in a plastic gauge, exposing it to Aedes albopictus for 2 minutes, and counting the number of stays.
The test was terminated when the test was stopped twice in total, and the test was exposed for 2 minutes every 30 minutes until the test was completed. If the second retention is during the 30th minute exposure, the repellent effect duration is determined to be 0 minutes, and if the second retention is performed at the 60th minute exposure, the repellent effect duration is 30 minutes. It was judged. The test was carried out by three test subjects, and the average duration of repellent effect was calculated.

(Evaluation of odor intensity)
The test product was applied to the 4.5×4.5 cm surface of the inner part of the human forearm at a dose of 2 mg/cm ² . Immediately after that, the odor intensity was determined by sensory evaluation by three evaluators. The odor intensity is evaluated on a 6-point scale (5: intense odor, 4: strong odor, 3: odor that can be easily perceived, 2: weak odor that indicates what odor it is, 1: barely perceptible odor, 0: odorless) Evaluation was performed, and the average value of the evaluations by the three evaluators was taken as the odor intensity. The odor intensity suitable for skin application was classified as follows. The smaller the number, the better the composition.
A: 2.5 or less B: 2.5 or more and 3.5 or less C: 3.5 or more

(Evaluation of long-term storage stability)
In a 100 mL glass bottle, 80 mL of the composition of each example was placed, sealed, and stored at 50° C. for 1 month, and then the presence or absence of an oil phase in the composition was visually confirmed, and the results were shown as the following criteria. ..
A: No change.
B: The oil phase coalesces, and some bleeding from the emulsion to the surface is seen.
C: Separation of oil phase is observed.

Examples 1-36, Comparative Examples 1-9 (Production and evaluation of compositions)
The components shown in Table 1 were blended in the blending amounts shown in Tables 2 to 7, and the stirring section of TK Robomix (Tokushu Kika Kogyo Co., Ltd.) was changed to TK Homomixer MARKII 2.5 type. The oil-in-water type composition of each example was obtained through the step of stirring for 2 minutes at 8,000 rpm using the replaced one. The notations (A) to (D) described in the table correspond to the components (A) to (D) in the present specification, respectively. Further, the blending amounts shown in Tables 2 to 7 are the active ingredient amounts (mass %) of each component. Various evaluations were performed by the above methods using the obtained compositions. The results are shown in Tables 2-7.

From Tables 2 to 7, the compositions of the present invention (Examples 1 to 36) containing predetermined amounts of the components (A) and (B) have a pest repellent time of 2 hours or longer, and have an excellent repellent sustaining effect, and It can be seen that the odor derived from the repellent component is suppressed.

According to the present invention, pests, particularly excellent repellent persistence effect against flying pests, safe, and strong odor derived from repellent components is suppressed, pest repellent composition suitable for application to the skin, pest retention control composition, A pest repellent method and a pest retention restraint method can be provided.

Claims (5)

1. A pest repellent composition containing the following components (A) and (B).
   (A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13% by mass or more and 99.995% by mass or less (B) consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected from the group: 0.005 mass% or more and 15 mass% or less
2. A pest retention control composition containing the following components (A) and (B).
   (A) Silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol, which has a surface tension of 40 mN/m or less at 25°C and a viscosity of 400 mPa·s or less at 23°C measured by a B-type rotational viscometer, and One or more non-volatile liquid oily ingredients selected from the group consisting of polyhydric alcohols: 13% by mass or more and 99.995% by mass or less (B) consisting of citronella oil, lemongrass oil, eucalyptus oil, peppermint oil, and dog peppermint oil One or more repellent essential oils selected from the group: 0.005 mass% or more and 15 mass% or less
3. The composition according to claim 1 or 2, wherein the component (A) is at least one selected from the group consisting of silicone oil, ester oil, and hydrocarbon oil.
4. A method for repelling harmful insects, which comprises applying the composition according to claim 1 to the surface of human skin.
5. A method for suppressing the retention of pests, which prevents the pests from staying on human skin by attaching the composition according to claim 2 to the limbs of the pests.