JP6138583B2 - Indoor tick repellent method - Google Patents

Description

The present invention relates to an indoor tick repellent method.

In recent years, due to changes in the living environment, indoor dust mites such as mites, leopard mites, dust mites, etc. have been generated indoors, causing problems such as allergic asthma and skin eruption as well as discomfort. .
Therefore, there has been a demand for indoor acaricides for treating carpets and bedding, but because there are many use cases where they are in direct contact with the skin indoors, development of safer drugs is still necessary. The exact control method is not established. Furthermore, it has been clarified that leopard mites that cause allergic asthma can cause allergies even in the corpse itself.

Against this background, a technique for preventing tick from approaching people and patients rather than killing indoor dust mites has been sought, and several proposals have been made so far. For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 3-264504) discloses an acaricide or a tick repellent containing n-hexyl salicylate, n-hexyl benzoate, eugenol, or the like as an active ingredient. Patent Document 2 (Japanese Patent Laid-Open No. 6-16515) discloses plant essential oils such as vetiver oil, patchouli oil, clove oil, and the like as Patent Document 3 (Japanese Patent Laid-Open No. 2001-2001). No. 31508) discloses 1,8-cineole or eucalyptus oil containing a large amount of this component, and is conscious of natural product orientation and safety, but has a satisfactory repellent effect on indoor dust mites. I can't say that.

On the other hand, the present inventors have previously found that cinnamic acid derivatives such as cinnamyl acetate and methyl cinnamate are useful as a tick repellent component, and disclosed Patent Document 4 (Japanese Patent Laid-Open No. 2006-89424) relating to an aqueous solution. I applied. And, as a preferable application example of this preparation, a liquid absorption core type indoor dust mite control product comprising a liquid absorption core that sucks up an aqueous liquid agent and an evaporation part that is located above the liquid absorption core and diffuses the liquid solution sucked up. Presented. This tick control product can create a space that tick dislikes by the volatilization action of cinnamic acid derivatives, but it is highly practical, but it is used for applications that expect residual effect by attaching the mite repellent component to the object Is not suitable.
Furthermore, the present inventors have disclosed in Patent Document 5 (Japanese Patent Laid-Open No. 2011-132196) that “a stock solution and a propellant containing a non-volatile tick repellent component and a solvent are contained in an indoor dusty mite from their filled containers. A method of spraying a certain amount toward a space above a place where the mosquitoes are inhabiting or inhaling, and the spray particles settle and adhere to the place, thereby repelling the indoor dust mites '' While disclosed, it was suggested that dibasic acid esters are preferable as the non-volatile tick repellent component, and dibutyl sebacate is the most suitable, but there is still room for improvement in terms of indoor mite repellent efficacy.

The method of patent document 5 is a system which sprays a small amount of aerosol agents containing a high concentration active ingredient. The present inventors have found that, as an indoor tick repellent component that is applied to this highly convenient method, a compound that is simultaneously used in a solvent application is optimal and can effectively enhance indoor tick repellent efficacy. The present invention has been achieved.

JP-A-3-264504 Japanese Patent Laid-Open No. 6-16515 JP 2001-31508 A JP 2006-89424 A JP 2011-132196 A

The present invention has been found that the following constitution has an excellent effect for achieving the above-mentioned object.
(1) As an indoor mite repellent component, selected from heptyl caprylate, octyl caprylate, butyl caprate, heptyl caprate, propyl laurate, butyl laurate, propyl myristate, butyl myristate, heptyl palmitate and ethyl linoleate A certain amount of spraying treatment is performed indoors using an aerosol agent in which an aerosol container containing a fixed amount aerosol valve is filled with an aerosol stock solution containing only one or more types and a propellant. Features an indoor tick repellent method.

The present invention has been found that the following constitution has an excellent effect for achieving the above-mentioned object.
(1) As an indoor mite repellent component, an aerosol stock solution and a propellant containing an aliphatic carboxylic acid ester compound in which the total number of carbon atoms of the acid portion and the alcohol portion is 14 to 23 are provided with an aerosol valve for quantitative spraying. An indoor tick repellent method that sprays a certain amount indoors using an aerosol agent filled in an aerosol container.
(2) The aliphatic carboxylic acid ester compound is octyl caprylate, butyl caprate, heptyl caprate, isopropyl laurate, propyl laurate, butyl laurate, isopropyl myristate, propyl myristate, butyl myristate, palmitic acid The indoor mite repellent method according to (1), wherein the method is one or more selected from isopropyl, heptyl palmitate, isopropyl stearate, isopropyl isostearate, ethyl linoleate, and isopropyl linoleate.
(3) The indoor tick repellent method according to (2), wherein the aliphatic carboxylic acid ester compound is isopropyl myristate.
(4) The indoor tick repellent method according to any one of (1) to (3), wherein the aerosol stock solution contains a salicylic acid ester compound and / or a benzoic acid ester compound as a further indoor tick repellent component.
(5) The salicylic acid ester compound and / or benzoic acid ester compound is amyl salicylate, isoamyl salicylate, hexyl salicylate, cyclohexyl salicylate, cis-3-hexenyl salicylate, benzyl salicylate, amyl benzoate, isoamyl benzoate, benzoic acid The indoor tick repellent method according to (4), which is one or more selected from hexyl, cyclohexyl benzoate, cis-3-hexenyl benzoate, and benzyl benzoate.
(6) The indoor structure according to (5), wherein the salicylic acid ester compound and / or the benzoic acid ester compound is one or more selected from hexyl salicylate, cyclohexyl salicylate, benzyl salicylate, and cyclohexyl benzoate. How to avoid tick.

In the indoor mite repellent method of the present invention, an aerosol stock solution containing a specific indoor mite repellent component having an action as a solvent and a propellant are filled in an aerosol container equipped with an aerosol valve for quantitative spraying. By spraying a certain amount indoors, a remarkable indoor mite repellent effect can be exerted against acarid mites, leopard mites, dust mites, claw mites and the like, which is extremely practical.

The present invention is characterized in that only an aliphatic carboxylic acid ester compound in which the total number of carbon atoms in the acid portion and the alcohol portion is 14 to 23 is used as an indoor mite repellent component.
Examples of the aliphatic carboxylic acid ester compounds include heptyl caprylate, octyl caprylate, butyl caprate, heptyl caprate, propyl laurate, butyl laurate, propyl myristate, butyl myristate, heptyl palmitate, isopropyl isostearate, And ethyl linoleate and the like can be exemplified, and among them, myristic acid esters are preferable, and they have excellent indoor mite repellent efficacy and are easy to use.

Although the aliphatic carboxylic acid ester compound has been conventionally used as a solvent for insecticides, there has been no attention so far in relation to its repellent effect on indoor mites. However, as a result of intensive studies, the present inventors have found that an aliphatic carboxylic acid ester compound having a total number of carbon atoms of the acid part and the alcohol part of 14 to 23 exhibits a corresponding indoor mite repellent effect, The present invention has been achieved by knowing that the indoor mite repellency is significantly improved beyond expectation when it is applied to an aerosol system that is equipped with an aerosol valve for quantitative spraying, which will be described later, and is sprayed with a certain amount. It is.
Here, the fixed amount to be sprayed indoors is, for example, about 0.2 to 0.9 mL toward the air per time, and inevitably requires a high concentration of indoor mite repellent component amount, In the case of the said compound, since it has the effect | action as a solvent simultaneously, it is thought that it contributes advantageously to the improvement of an indoor mite repellent effect.

Therefore, the aliphatic carboxylic acid ester compound can be blended up to 99.5% by mass of the total amount of the aerosol stock solution, and is high in the indoor tick repellent method of the present invention that can provide an aerosol stock solution that occupies most indoor tick repellent components. The indoor mite repellent effect is realized very efficiently. On the other hand, when the compound is less than 10% by mass relative to the total amount of the aerosol stock solution, the desired effect may not be obtained, which is not preferable. In addition, when geometrical isomers and optical isomers are present in the compound, it goes without saying that each of them and any mixture thereof are also included in the present invention.

The aerosol stock solution used in the present invention may further contain other functional components (insecticide component, antifungal component, antibacterial component, bactericidal component, deodorant component, etc.), solvent, surfactant, solubilizer, dispersant as required. , Clothing protective agents such as mite allergen reducing agents, cyclic silicones, stabilizers, colorants, aromatic components, and the like can be appropriately blended.

Insecticidal components include, for example, allethrin, praretrin, ciphenothrin, permethrin, cyfluthrin, bifenthrin, tralomethrin, imiprotolin, transfluthrin, methfluthrin, profluthrin, pyrethroid compounds such as etofenprox, silicon compounds such as silafluophene, dichlorvos , Organophosphorus compounds such as fenitrothion, carbamate compounds such as propoxur, neonicotinoid compounds such as dinotefuran, imidacloprid, clothianidin, fipronil, indoxacarb, etc. Hinokitiol, 2-mercaptobenzothiazole, 2- (4-thiazolyl) benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one Triforine, 3-4-isopropyl phenol, ortho - phenylphenol and the like.
In addition, as a deodorant component, for example, oyster family, gramineous family, camellia family (tea), ginkgo family, oleander family (such as cinnamon), mulberry family (such as fig), citrus family, quinolanoceae family (such as acerola) A plant-derived substance may be added. This deodorant component not only deodorizes the object, such as carpets and bedding, but also deodorizes food odors such as sebum and sweat that ticks prefer and prevents mites from approaching. It also has merit.

As the solvent, in addition to the aliphatic carboxylic acid ester compound, other general solvents can be used if necessary. For example, C3-C3 lower alcohols such as ethanol and isopropanol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, dipropylene glycol, hexylene glycol, etc. Examples include glycols, these glycol ethers, ketone solvents, and hydrocarbon solvents such as kerosene.

Examples of the surfactant include polyoxyethylene hydrogenated castor oil, polyoxyethylene higher alkyl ethers (polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, etc.), polyoxyethylene alkylphenyl ethers, polyoxyethylene higher fatty acid. Nonionic surfactants such as esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene polyoxypropylene alkyl ether, laurylamine oxide, stearylamine oxide, amidopropyldimethyl laurate Examples thereof include higher alkyl amine oxide surfactants such as amine oxide.

Furthermore, the aerosol stock solution used in the present invention may contain a mite allergen reducing agent containing a cationic surfactant or an anionic surfactant. That is, while the live mites are kept away from the target area, the allergen activity is reduced for the remaining dead mites and mite feces and the like, and a clean environment free from mite allergens can be efficiently provided.
Cationic surfactants include dilong chain alkyldishort chain alkyl quaternary ammonium salts (distearyldimethylammonium salt, distearylmethylhydroxyethylammonium salt, dioleyldimethylammonium salt, etc.), monolong chain alkyltrishort chain Examples include alkyl type quaternary ammonium salts (such as lauryl trimethyl ammonium salt and stearyl dimethyl benzyl ammonium salt) and tri long chain alkyl mono short chain alkyl type quaternary ammonium salts (such as trilauryl methyl ammonium chloride and tristearyl methyl ammonium chloride). . In addition, the mixing | blending of a suitable quantity cationic surfactant also has the merit that a softness | flexibility can be provided to a process fiber body.
On the other hand, examples of anionic surfactants include lauryl benzene sulfonate, lauryl sulfate, lauryl sulfate triethanolamine, and polyoxyethylene lauryl ether sulfate. An agent may be configured.

In addition, as an aromatic component, orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, coconut oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, Examples include, but are not limited to, aromatic components such as phenylethyl alcohol, amylcinnamic aldehyde, cuminaldehyde, and benzyl acetate, green leaf alcohol called “green scent”, and flavor components containing green leaf aldehyde.

The aerosol stock solution thus obtained can be prepared into various types of aerosols, but the aerosol used in the indoor mite repellent method of the present invention has a large surface spray of the aliphatic carboxylic acid ester compound that is not sticky to the target surface. Considering that there is a risk of occurrence, it is specified as a method of spraying a small amount of a certain amount with an aerosol valve for quantitative spraying.
Here, as the propellant used for preparing the aerosol agent, liquefied gas such as liquefied petroleum gas (LPG), dimethyl ether (DME), hydrofluoroolefin (for example, HFO1234ze), nitrogen gas, carbon dioxide gas, nitrous oxide, Compressed gas such as compressed air. Of these, one or more of them can be employed as appropriate, but usually those mainly composed of LPG are easy to use.

The aerosol stock solution / propellant ratio of the aerosol is 20-60 / 40-80 (volume ratio) in consideration of the adhesion efficiency to the target surface, and in addition, the spray particle size distribution of spray is 10-50 μm. It is preferable that the particles occupy 60% or more of the total, and that 30 to 80% of the total spray particles settle on the floor surface or adhere to the wall surface by 1 hour after the spray treatment.

Moreover, the aerosol agent used by this invention is sprayed 0.2-0.9 mL (0.5-50 mg / m < ³ > as an indoor tick repellent component amount) toward the air | atmosphere at once, Preferably it is indoors per time. It is a type, and other shapes such as nozzles, nozzles, containers, etc. may be appropriately selected according to the use, purpose of use and the like. For example, it can be designed as a desktop type equipped with a button to be sprayed from above and an obliquely upward nozzle, or designed for carrying a small container.

The indoor tick repellent method of the present invention is applied to tatami mats, carpets, floors, beds, futons, pillows, cushions, stuffed toys, cloth sofas, etc. in living rooms, Japanese-style rooms, entrances and the like. And the aerosol agent content adhering to the object surface has a remarkable indoor mite repellent effect against acarid mites, leopard mites, dust mites, claw mites and the like, and is also extremely useful because it has excellent residual effect.

Next, based on a concrete Example, the indoor tick repellent method of this invention is demonstrated in detail.

An aerosol stock solution was prepared by dissolving 2.0 w / v% cyclohexyl salicylate and 1.0 w / v% isoeugenol in isopropyl myristate, an indoor mite repellent component. The aerosol stock solution 12 mL and liquefied petroleum gas 18 mL [aerosol stock solution / propellant ratio: 40/60 (volume ratio)] were pressurized and filled into an aerosol container with an aerosol valve for quantitative spraying, and the indoor tick repellent aerosol used in the present invention. Got.
The spray particles of this aerosol agent accounted for 72% of the spray particles of 10 to 50 μm in the distribution.

In the center of a 6-tatami room, which was almost sealed, the aerosol agent was sprayed for 4 shots at 0.2 mL per shot toward the upper four corners. As for this aerosol agent, 63% of the entire spray particles settled on the floor surface by 1 hour after the spray treatment or adhered to the wall surface, and did not attract indoor dust mites for about 2 weeks. In addition, this aerosol agent was effective about 30 times when 0.8 mL (0.2 mL × 4) was used at a time.
Moreover, when the aerosol solution formulation of Example 1 was applied to the conventional aerosol sprayed about 6-12 mL in a 6 tatami room, the stickiness by isopropyl myristate was unavoidable, and it was unsuitable in terms of usability.

According to Example 1, various indoor mite repellent aerosols shown in Table 1 were prepared, and the mite repellent effect was evaluated. However, the present invention other than the present inventions 3 and 7 in Table 1 is shown as a reference example.
[Tick repellent efficacy test]
2 mL of the test aerosol agent was sprayed on a 1000 cm 2 square cotton cloth, air-dried and then cut into a 4 cm diameter circle. This was fitted into a petri dish having a diameter of 4 cm, and 50 mg of the reference medium was placed in the center. Separately, about 10,000 test leopard mites with a medium were released in a petri dish with a diameter of 9 cm, and a petri dish with a diameter of 4 cm prepared previously was placed in the center.
Similarly, a non-sprayed area was made using a cotton cloth that was not sprayed.
After 24 hours, the number of mites that had invaded the cotton cloth was counted, and the repelling rate was calculated according to the following formula.
The test was performed on a cotton cloth immediately after the spray treatment and a cotton cloth after leaving it indoors for 20 days.

Repelling rate (%) = [number of invading ticks in untreated area−number of invading ticks in treated area] / number of invading ticks in untreated area × 100

As a result of the test, as an indoor mite repellent component, an aerosol solution containing only a specific aliphatic carboxylic acid ester compound and a propellant was used to fill an aerosol container equipped with an aerosol valve for quantitative spraying, It was confirmed that by spraying a certain amount indoors, it showed an excellent repellent effect against indoor dust mites, and the repellent effect lasted for a long time. Of the specific aliphatic carboxylic acid ester compounds, myristic acid esters, especially isopropyl myristate, were preferred .
To this, as in Comparative Examples 1 and 2, without blending a specific aliphatic carboxylic acid ester compound, the aerosol using a conventional other indoor mite repellent component alone, repellent effect was poor. Moreover, even when the aliphatic carboxylic acid ester compound was used, in Comparative Examples 3 to 6 in which the total number of carbon atoms in the acid portion and the alcohol portion was out of the range of 14 to 23, the repelling effect was not improved.
Thus, indoor mite repellent component and aerosols total carbon atoms obtained by adopting only an aliphatic carboxylic acid ester compound of 14 to 23 as a solvent, a predetermined amount of sprayed indoors with metered dose aerosol valve It is clear that the method of treatment exhibits characteristically superior indoor mite repellent efficacy and provides a useful and practical indoor mite repellent method.

The indoor tick repellent method of the present invention may be applicable not only to indoor dust mites but also to indoor pests such as cockroaches.

Claims (1)

As an indoor tick repellent component, 1 selected from heptyl caprylate, octyl caprylate, butyl caprate, heptyl caprate, propyl laurate, butyl laurate, propyl myristate, butyl myristate, heptyl palmitate and ethyl linoleate It is characterized by spraying a certain amount indoors using an aerosol agent filled with an aerosol container containing a seed or two or more types of aerosol stock solution and propellant in an aerosol container for quantitative spraying. Indoor tick repellent method.