Mite repellent products and mite repellent methods

Abstract

Since indoor dust mites become more active in high-temperature and high-humidity environments, the objective is to provide a new mite repellent product and method that can effectively repel indoor dust mites by increasing the amount of mite repellent components released in high-temperature and high-humidity environments. [Solution] A mite repellent product comprising holding a mite repellent composition containing a mite repellent component on a solid carrier and vaporizing the mite repellent component from the solid carrier, wherein the synthetic resin constituting the solid carrier is polymerized containing monomers with a LogP value of 1 or more, and a mite repellent method using the mite repellent product.

Description

Technical Field

[0001] The present invention relates to a mite repellent product for repelling indoor dust mites and a mite repellent method.

Background Art

[0002] In recent years, due to the spread of highly airtight houses and air conditioners, the indoor environment maintains appropriate humidity and temperature throughout the year. Therefore, it provides an environment suitable for the reproduction of indoor dust mites that prefer humid conditions. In addition to such conditions, due to the presence of secretions such as sebum, sweat, dandruff, etc. from the human body and food spills, the surfaces and interiors of tatami mats, carpets, futons, pillows, sofas, cushions, stuffed toys, stored clothes, etc. have become environments where indoor dust mites are likely to reproduce.

[0003] Known indoor-dwelling dust mites include Dermatophagoides, Cheyletiella, and Glycyphagus. Their adults, corpses, exuviae, feces, etc. are known as allergens and can cause allergic diseases such as bronchial asthma, allergic rhinitis, and atopic dermatitis by entering the body. Also, Cheyletiella is the main mite causing bite symptoms, and Glycyphagus occurs in foods and tatami mats, etc., and their large-scale occurrence causes discomfort. And it is also known that even when not actually bitten, there are mental allergic itching and mental effects called acariasis.

[0004] Under such circumstances, there is a demand for a control agent having a high effect against indoor dust mites. However, since indoor dust mites also use excreta such as corpses and feces as allergy sources, it is desirable to exclude them from the living environment or prevent them from approaching rather than killing them, and there is a particular demand for the development of a repellent having an excellent repellent effect.

[0005] Under these circumstances, measures are being considered to prevent indoor dust mites from entering the human living environment. These include sprays that use a trigger pump to spray mite-repellent components into areas where mites should be repelled (see, for example, Patent Document 1), as well as natural vaporizing agents that can easily repel mites simply by being installed.

[0006] Natural vaporizing agents can easily repel mites around the installation site for a long period of time by gradually vaporizing mite repellent components held on a solid carrier. The invention describes using superabsorbent polymers (see, for example, Patent Document 2), zeolites (see, for example, Patent Document 3), or pulp (see, for example, Patent Document 4) as the solid carrier. The invention also describes a method in which a mite repellent composition containing mite repellent components is solidified with a gelling agent, and then the mite repellent components are vaporized (see, for example, Patent Document 3). [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2010-180131 [Patent Document 2] Japanese Patent Publication No. 2020-40991 [Patent Document 3] Japanese Patent Publication No. 2021-155342 [Patent Document 4] Japanese Patent Publication No. 2024-177506 [Overview of the project] [Problems that the invention aims to solve]

[0008] Incidentally, since indoor dust mites become more active in high-temperature and high-humidity environments, for effective repellent of indoor dust mites, a naturally evaporating agent is desirable, in which the amount of mite repellent component released increases in high-temperature and high-humidity environments compared to low-temperature and dry environments.

[0009] However, research by the inventors has revealed that, with conventionally known indoor dust mite repellent products using solid carriers of naturally evaporating agents, the amount of mite repellent component evaporating under high-temperature, high-humidity environments is approximately the same or less than under low-temperature, dry environments, and that the amount of mite repellent component evaporating does not efficiently increase under high-temperature, high-humidity environments.

[0010] In view of the above-mentioned problems, the present invention aims to provide a novel mite repellent product and method that can effectively repel indoor dust mites by increasing the amount of mite repellent component evaporating in a high-temperature, high-humidity environment compared to a low-temperature, dry environment. [Means for solving the problem]

[0011] The inventors of the present invention have discovered that the above problems can be solved by vaporizing a room-temperature evaporative mite repellent component from a solid carrier made of a synthetic resin polymerized with a monomer having a LogP value of 1 or more, and have completed the present invention.

[0012] In other words, the present invention is as follows: 1. A mite repellent product that vaporizes mite repellent components from a solid carrier made of a synthetic resin polymerized with monomers having a LogP value of 1 or higher. 2.1. The mite repellent component described has a vapor pressure of 1.0 × 10⁻⁶ at 25°C. -5 Mite repellent products with a Hg level of mmHg or higher. 3.1. A mite repellent product wherein the synthetic resin described is at least one selected from the group consisting of polyolefins, polyesters, and phenoxy resins. 4.1. A method of mite repellent that involves vaporizing the mite repellent components of the mite repellent product described above into the indoor space. 5. The mite repellent product described in 1., which is adjusted so that the ratio (Z / Y ratio) of the amount of mite repellent component transpired under high temperature and high humidity conditions (Z) to the amount of mite repellent component transpired under low temperature and dry conditions (Y) is 2 or more. [Effects of the Invention]

[0013] The solid carrier of the present invention has a specific composition range, and by holding a mite repellent composition containing a mite repellent component, it can significantly evaporate more of the mite repellent component in a high-temperature and high-humidity environment, and can effectively repel indoor dust mites.

Brief Description of the Drawings

[0014] [Figure 1] FIG. 1 is a schematic diagram for explaining an embodiment of a mite repellent product when using a film-shaped solid carrier. [Figure 2] FIG. 2 is a schematic diagram for explaining an embodiment of a mite repellent product when using a net-shaped solid carrier. [Figure 3] FIG. 3 is a schematic diagram for explaining an embodiment of a mite repellent product when using a rod-shaped solid carrier.

Embodiments for Carrying Out the Invention

[0015] Hereinafter, the solid carrier, mite repellent component, mite repellent composition, and mite repellent product according to the present invention will be described based on embodiments, but the present invention is not limited to these embodiments.

[0016] In this embodiment, "LogP", also referred to as "LogKow", is a coefficient indicating the affinity of an organic compound for n-octanol and water. Specifically, for P, which is the n-octanol / water partition coefficient, it is a value expressed in the form of the logarithm LogP to the base 10. When LogP decreases, the hydrophilicity increases. Generally, LogP can be determined by actual measurement using n-octanol and water. Also, LogP can be calculated using an atom / fragment contribution method, in which the structure is divided into fragments (atoms / functional groups), the values of each atomic group are summed, and a structure correction coefficient is used as necessary to calculate an estimated value. Note that the LogP in this embodiment describes a value calculated by a computational chemistry method from the molecular structure of an organic compound using the estimation software EPI Suite(TM) developed by the U.S. Environmental Protection Agency (EPA).

[0017] In this embodiment, the "Z / Y ratio" means the ratio of the transpiration amount (Z) in a high-temperature and high-humidity environment to the transpiration amount (Y) in a low-temperature and low-humidity environment. Here, the "high-temperature and high-humidity environment" serving as the comparison criterion refers to conditions such as a temperature of 30°C and a humidity of 60%, and the "low-temperature and low-humidity environment" refers to conditions such as a temperature of 15°C and a humidity of 20%. Note that the Z / Y ratio can be controlled by adjusting the hydrophobicity of the resin constituting the solid carrier (the LogP value of the monomer and its content rate), the shape (surface area) of the solid carrier, the porosity, etc. For example, the Z / Y ratio can be increased by blending a monomer with a high LogP value or increasing its content rate. From the perspective of efficiently transpiring the mite repellent component in a high-temperature and high-humidity environment where the activities of indoor dust mites are active, the Z / Y ratio is preferably 2 or more, more preferably 2.5 or more, and even more preferably 3 or more.

[0018] (Solid carrier) The solid carrier of this embodiment is composed of a synthetic resin polymerized by including a monomer having a LogP value of 1 or more, and exhibits a desired effect by holding and transpiring the mite repellent composition.

[0019] The synthetic resin constituting the solid carrier in this embodiment is polymerized containing monomers with a LogP value of 1 or higher. The LogP value of the monomers used in polymerization is preferably 1.1 or higher, more preferably 1.2 or higher. By using a synthetic resin polymerized containing monomers with a LogP value of 1 or higher, more mite-repellent components are released in a high-temperature, high-humidity environment than in a low-temperature, dry environment, effectively repelling indoor dust mites. Furthermore, there is no particular upper limit to the LogP value of the monomers used in polymerization, but it is preferably 4 or lower, more preferably 3 or lower, and even more preferably 2 or lower.

[0020] The monomers constituting the synthetic resin used as a solid support may consist of only one type or a combination of multiple types, as long as they contain a monomer with a LogP value of 1 or higher. Examples of monomers with a LogP value of 1 or higher that constitute the synthetic resin include ethylene (LogP value: 1.27), propylene (LogP value: 1.68), terephthalic acid (LogP value: 1.76), dimethyl terephthalate (LogP value: 1.66), 2,6-naphthalenedicarboxylic acid (LogP value: 2.93), and bisphenol A (LogP value: 3.64). By polymerizing these monomers alone or in combination with other monomers not listed here, synthetic resins such as polyethylene, polypropylene, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, phenoxy resin, and ethylene vinyl acetate can be obtained. The LogP values ​​of the above monomers were calculated using EPI Suite(TM). The content of monomers with a LogP value of 1 or higher relative to the total monomers constituting the above synthetic resin is preferably 50% by mass or more, more preferably 80% by mass or more, and even more preferably 95% by mass or more. In order to reliably exhibit the effects of the present invention, it is important that the monomer content is 50% by mass or more.

[0021] The synthetic resin used for the solid carrier may be a single type, or two or more types may be combined in any ratio.

[0022] The solid carrier of this embodiment may optionally contain, to the extent that it does not impair its properties, dyes such as malachite green or other pigments, antifungal agents such as sorbic acid or its salts, antifungal agents such as dehydroacetic acid or other preservatives, antioxidants, water-resistance or oil-resistance improvers, and strength improvers such as sulfur or zinc chloride.

[0023] The solid carrier in this embodiment can be made from synthetic resin processed into various forms. Examples of forms include film, rod, mesh, and lattice shapes, as well as net-like structures woven from synthetic resin threads, but the form is not limited to these.

[0024] When the solid carrier in this embodiment is in the form of a film, the thickness of the film is preferably 0.01 to 1.0 mm, more preferably 0.01 to 0.5 mm, and even more preferably 0.01 to 0.1 mm, although this also depends on the shape and dimensions of the container that stores the mite repellent composition, from the viewpoint of permeability of the mite repellent composition.

[0025] When the solid carrier in this embodiment is in the form of a rod, the outer diameter is preferably 1 to 10 mm, more preferably 1 to 6 mm, and even more preferably 1 to 4 mm, from the viewpoint of evaporative properties of the mite repellent composition, although this also depends on the shape and dimensions of the container that stores the mite repellent composition. The length is preferably 10 to 400 mm, more preferably 10 to 300 mm, and even more preferably 10 to 200 mm, from the viewpoint of evaporative properties.

[0026] In this embodiment, if the solid carrier is in the form of a net woven from yarn made of synthetic resin, the outer diameter of the yarn constituting the net is preferably 0.01 to 5.0 mm, more preferably 0.01 to 2.0 mm, and even more preferably 0.1 to 1.0 mm, depending on the shape and dimensions of the container for storing the mite repellent composition, from the viewpoint of the evaporability of the mite repellent composition, and the thickness of the net is preferably 0.1 to 5.0 mm, more preferably 0.1 to 3.0 mm, and even more preferably 0.1 to 2.0 mm.

[0027] (Mite repellent ingredients) The mite repellent component in this embodiment has repellent activity against mites and can be appropriately selected depending on the location where the mite repellent product is used. Examples of mite repellent components include insecticides, repellents, natural fragrances, synthetic fragrances, and blended fragrances.

[0028] Examples of insecticides include pyrethroid compounds such as metofluthrin, allethrin, phthalthrin, resmethrin, flamethrin, phenothrin, permethrin, empenthrin, 1-ethynyl-2-ethyl-2-pentenyl-2,2,3,3-tetramethylcyclopropanecarboxylate, 1-ethynyl-2-methyl-2-pentenyl-2,2-dimethyl-3-(2',2'-dichlorovinyl)-cyclopropanecarboxylate, prallethrin, tefluthrin, transfluthrin, and profluthrin; and carbamyl compounds such as propoxur and carbaryl. Examples include thread compounds; organophosphorus compounds such as fenitrothion and diclovos (DDVP); oxadiazole compounds such as methoxadiazone; phenylpyrazole compounds such as fipronil; sulfonamide compounds such as amidoflumet; neonicotinoid compounds such as dinotefuran and imidacloprid; insect juvenile hormones such as methoprene and hydroprene; antijuvenile hormones such as precosen; molting hormones such as ecdysone; and essential oils such as phytoncides, peppermint oil, orange oil, cinnamon oil, benzyl alcohol, and clove oil.

[0029] Examples of repellents include DEET, paramenthane-3,8-diol, rotenone, di-n-butylsuccinate, hydroxyanisole, ethyl 3-(Nn-butyl-N-acetylamino)propionate, and 2-(2-hydroxyethyl)-1-methylpropyl ester of 1-piperidinecarboxylate.

[0030] Natural fragrances include, for example, animal-derived fragrances such as musk, citronella, and lilac; rose oil, lavender oil, peppermint oil, lemon oil, abies oil, ajokun oil, almond oil, angelica root oil, pear oil, bergamot oil, perch oil, boa rose oil, sedge oil, gananga oil, capsicum oil, caraway oil, cardamom oil, cassia oil, celery oil, cinnamon oil, citronella oil, cognac oil, and coriander oil. Examples of plant-based fragrances include dwarf oil, cupeb oil, garlic oil, ginger oil, grapefruit oil, hop oil, juniper berry oil, laurel leaf oil, lemon oil, lemongrass oil, romaine oil, mace oil, nutmeg oil, mandarin oil, tangerine oil, mustard oil, lantern oil, onion oil, pepper oil, orange oil, sage oil, star anise oil, turpentine oil, wormwood oil, and alligator bean extract.

[0031] Examples of synthetic or compounded fragrances include hydrocarbons such as pinene and limonene; alcohols such as linalool, geraniol, citronellol, menthol, borneol, benzyl alcohol, and anise alcohol; phenols such as anethole and eugenol; aldehydes such as n-butyraldehyde, isobutyraldehyde, citral, citronellal, benzaldehyde, cinnamic aldehyde, and vanillin; ketones such as carvone, menthone, and camphor; lactones or oxides such as amyl butyrolactone, ethyl methylphenylglycidate, γ-nonyl lactone, coumarin, and cineole; and esters such as isopropyl isobutyrate, granyl isovalerate, ethyl myristate, ethyl benzoate, benzyl benzoate, cinnamyl cinnamate, and methyl salicylate.

[0032] The mite repellent component may be used individually or in combination of two or more components.

[0033] In this embodiment, the vapor pressure of the mite repellent component used is not particularly limited, but the vapor pressure at 25°C is preferably 1.0 × 10⁻⁶. -5 mmHg (approximately 1.3 x 10 -3 Pa) or higher, more preferably 1.0 × 10 -4mmHg (approximately 1.3 x 10 -2 The vapor pressure of the mite repellent component is above the above lower limit, which allows the component to evaporate smoothly from the synthetic resin solid carrier containing monomers with a LogP value of 1 or more, a characteristic of the present invention, and maintain an effective airborne concentration. On the other hand, if the vapor pressure falls below the above lower limit, the component held in the solid carrier may not evaporate sufficiently, and the desired mite repellent effect may not be obtained. The upper limit of the vapor pressure is not particularly limited, but from the viewpoint of long-term effectiveness, it is preferably 1.0 mmHg (approximately 1.3 × 10⁻⁶). 2 Pa) is less than or equal to [amount].

[0034] (Mite repellent composition) The mite repellent composition in this embodiment may contain a mite repellent component and a solvent, but it is also possible to hold only the mite repellent component on a solid carrier without a solvent. The content of the mite repellent component in the mite repellent composition should be adjusted as appropriate to achieve the desired effect, taking into consideration the type of mite repellent component, the type of solvent, and their combinations.

[0035] The content of the mite repellent component in the mite repellent composition is preferably 0.01 to 99% by mass, more preferably 0.01 to 70% by mass, and even more preferably 0.01 to 50% by mass.

[0036] Examples of solvents include organic solvents. Examples of organic solvents include hydrocarbon solvents such as paraffinic hydrocarbons and unsaturated aliphatic hydrocarbons, glycols such as glycerin, propylene glycol, and hexylene glycol, alcohols such as methanol, ethanol, isopropanol, 1-octanol, and 1-dodecanol, ketones such as acetone and acetophenone, ethers such as dihexyl ether, diethylene glycol diethyl ether, and dipropylene glycol dimethyl ether, esters such as dioctyl adipate, diethyl malonate, and diethyl phthalate, xylene, chlorcene, chloroform, and silicone oil. Among these, ethanols, paraffinic hydrocarbons, and ethers are particularly preferred, and paraffinic hydrocarbons and ethers are more preferred.

[0037] The solvent may be used alone or in combination of two or more types. The type and content of the solvent in the mite repellent composition should be set appropriately to achieve the desired effect, taking into consideration the composition of the mite repellent composition, and it is also possible to retain only the mite repellent component on a solid carrier without using a solvent.

[0038] The solvent content in the mite repellent composition is preferably 0 to 99% by mass, more preferably 0 to 90% by mass, and even more preferably 0 to 80% by mass.

[0039] The mite repellent composition in this embodiment may contain other components, as long as they do not impair the effects of the present invention. Examples of other components include antibacterial and antifungal agents, deodorants and odor removers, stabilizers, and dyes.

[0040] Examples of antibacterial and antifungal agents include isopropylmethylphenol, parachlorometaxylenol, triclosan, 3-iodomethyl-2-propenylbutylcarbamate, 2-(4-thiazolyl)benzimidazole, cetylpyridium chloride, 4-4-dimethyl-1,3-oxazolidine, poly(hexamethyl) biguanide hydrochloride, hinokitiol, and essential oils such as origanum oil, cinnamon oil, lemongrass oil, peppermint oil, and eucalyptus oil.

[0041] Examples of deodorizers and odor removers include lauryl methacrylate, geranyl crotonate, catechin, and polyphenols.

[0042] Examples of stabilizers include rust inhibitors such as trisodium citrate, ammonium citrate, sodium nitrite, ammonium benzoate, and ammonium nitrite; stabilizers such as ascorbic acid and butylhydroxyanisole; preservatives such as parahydroxybenzoic acid esters, quaternary ammonium salts, and phenoxyethanol; allergen inactivators such as catechin; photocatalysts such as fine titanium dioxide; non-photocatalysts such as titania phosphate; antioxidants such as dibutylhydroxytoluene and dibutylhydroxyanisole; and ultraviolet absorbers such as ethylhexyl methoxycinnamate, tris(tetramethylhydroxypiperidinol) citrate, pentaerythrityl tetra(di-t-butylhydroxyhydrocinnamate), 2-hydroxy-4-methoxybenzophenone, and 2-(2'-hydroxy-5'-methylphenyl)benzotriazole.

[0043] Examples of pigments include dyes such as anthraquinone, azo, and quinoline, legally approved pigments such as Blue No. 1, Green No. 202, and Violet No. 201, and natural pigments such as riboflavin and chlorophyll.

[0044] (Mite repellent product) An example of a mite repellent product using the solid carrier, mite repellent component, and mite repellent composition of this embodiment will be described with reference to the drawings, but the mite repellent product of this embodiment is not limited to the illustrated form.

[0045] In Figure 1, the solid carrier 1 is welded to the mite repellent composition storage container 2. The mite repellent composition 3 is contained in the mite repellent composition storage container 2 and is held in contact with the solid carrier 1.

[0046] To elaborate on an example using a film-like solid carrier, after placing the mite repellent composition 3 in the mite repellent composition storage container 2, the film-like solid carrier 1 is heat-sealed to the mite repellent composition storage container 2. After the solid carrier 1 is sealed to the mite repellent composition storage container 2, the solid carrier 1 is held at a vertical angle so that the mite repellent composition 3 comes into contact with the solid carrier 1 and is held by the solid carrier 1, after which the mite repellent component evaporates from the solid carrier 1. In this way, the mite repellent product 10 of this embodiment using a film-like solid carrier is configured so that the mite repellent composition stored in the container does not come into direct contact with the outside air, thereby preventing moisture from entering the composition itself due to humidity in the outside air. Furthermore, due to the properties of the surface of the film-like solid carrier, the mite repellent component evaporates significantly more in high-temperature and high-humidity environments than in low-temperature and dry environments, effectively repelling indoor dust mites.

[0047] In Figure 2, the solid carrier 1 is housed in the solid carrier storage container 4. The mite repellent composition 3 is held on the solid carrier 1.

[0048] To elaborate on an example using a net-like solid carrier, the net-like solid carrier 1 is placed in a solid carrier storage container 4, and the mite repellent composition is impregnated into the net-like solid carrier 1. By impregnating the net-like solid carrier 1 with the mite repellent composition, the mite repellent component evaporates from the solid carrier 1. The mite repellent product 10 of this embodiment evaporates significantly more mite repellent components in a high-temperature, high-humidity environment than in a low-temperature, dry environment, and can effectively repel indoor dust mites.

[0049] In Figure 3, the solid carrier 1 is inserted into the mite repellent composition storage container 2. The mite repellent composition 3 is contained in the mite repellent composition storage container 2 and is held in contact with the solid carrier 1.

[0050] To elaborate on an example using a rod-shaped solid carrier, after placing the mite repellent composition 3 in the mite repellent composition storage container 2, a rod-shaped solid carrier 1 is inserted into the mite repellent composition storage container 2. Due to capillary action, the mite repellent composition seeps up the rod-shaped solid carrier, and the mite repellent component evaporates from the solid carrier 1. The mite repellent product 10 of this embodiment evaporates significantly more mite repellent components in a high-temperature, high-humidity environment than in a low-temperature, dry environment, and can effectively repel indoor dust mites.

[0051] The mite repellent product of this embodiment can be used to repel mites. Specifically, by using the mite repellent product composed of the solid carrier, mite repellent component, and mite repellent composition of this embodiment and allowing the mite repellent component to evaporate, mites can be effectively repelled, especially in high-temperature and high-humidity environments.

[0052] The mites targeted for repellent are not limited as long as the effects of the present invention are achieved, but examples include house dust mites, predatory mites, and flour mites.

[0053] When using the mite repellent product of this embodiment to repel mites, it is preferable to use it in enclosed spaces such as indoors or inside buildings to ensure its effectiveness. Specifically, for example, by installing the mite repellent product of this embodiment on the floor of a room, mites in the surrounding area can be repelled. [Examples]

[0054] The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto.

[0055] [Test Example 1] Table 4 shows the results of evaluating the amount of mite repellent component evaporating from mite repellent products that combine solid carriers of the materials and shapes shown in Table 1 and mite repellent compositions shown in Table 3 in the mass percentages shown in Table 4. Table 2 shows the monomers that make up the solid carriers made of synthetic fibers among the solid carriers shown in Table 1.

[0056] (Method for measuring transpiration rate) Dust mite repellent products were placed in a high-temperature, high-humidity environment (temperature 30°C, humidity 60%) and a low-temperature, dry environment (temperature 15°C, humidity 20%), and the difference in mass before and after installation was defined as the amount of evaporation. The daily amount of evaporation is shown in Table 4.

[0057] [Table 1]

[0058] [Table 2]

[0059] [Table 3]

[0060] [Table 4]

[0061] Examples 1-10 5.0 g of a mite repellent composition having the composition shown in Table 3 was placed in a plastic container for mite repellent compositions measuring 58 mm × 53 mm × 10 mm. A solid carrier with a thickness of 0.05 mm and the configuration shown in Table 1 was heat-welded to the container to obtain the mite repellent product of Example 1.

[0062] Example 11 The mite repellent product of Example 11 was obtained by impregnating 1.0 g of a mite repellent composition having the composition shown in Table 3 onto a solid carrier with a thickness of 1.2 mm having the composition shown in Table 1.

[0063] Example 12 The mite repellent product of Example 12 was obtained by impregnating 1.0 g of a mite repellent composition having the composition shown in Table 3 onto a solid carrier with a thickness of 1.2 mm having the composition shown in Table 1.

[0064] Example 13 The mite repellent product of Example 13 was obtained by placing 20.0 g of a mite repellent composition with the composition shown in Table 3 into a glass container for mite repellent composition with dimensions of φ60 mm × 65 mm, and inserting three solid carriers with an outer diameter of 2.4 mm and a length of 200 mm, as shown in Table 1, into the container for mite repellent composition.

[0065] Comparative Example 1 A mite repellent product of Comparative Example 1 was obtained by placing 0.48 g of the solid carrier shown in Table 1 into a 50 mL glass beaker with dimensions of φ40 mm × 60 mm, adding 11.52 g of the mite repellent composition shown in Table 3 to the container, and holding it in place with the solid carrier.

[0066] Comparative Example 2 6.5 g of the mite repellent composition shown in Table 3 was placed in a 50 mL glass beaker with dimensions of φ40 mm × 60 mm to obtain the mite repellent product of Comparative Example 2.

[0067] Comparative Example 3 7.0 g of the solid carrier shown in Table 1 was placed in a paper mite repellent composition storage pillow measuring 60 mm x 70 mm, and 3.0 g of the mite repellent composition shown in Table 3 was impregnated to obtain the mite repellent product of Comparative Example 3.

[0068] Comparative Example 4 7.0 g of the solid carrier shown in Table 1 was placed in a paper mite repellent composition storage pillow measuring 60 mm x 70 mm, and 3.0 g of the mite repellent composition shown in Table 3 was impregnated to obtain the mite repellent product of Comparative Example 4.

[0069] Comparative Example 5 5.0 g of the solid carrier shown in Table 1 was placed in a paper mite repellent composition storage pillow measuring 60 mm x 70 mm, and 5.0 g of the mite repellent composition shown in Table 3 was impregnated to obtain the mite repellent product of Comparative Example 5.

[0070] [Table 5] Z / Y ratio: Evaporation rate under high temperature and high humidity conditions / Evaporation rate under low temperature and dry conditions

[0071] As shown in Table 5, in Examples 1 to 13, where the mite repellent component was evaporated from a solid carrier made of a synthetic resin polymerized with monomers having a LogP value of 1 or higher, the ratio of evaporation amount in a high-temperature, high-humidity environment to evaporation amount in a low-temperature, dry environment (Z / Y ratio) was 2 times or more, indicating that the mite repellent component could be efficiently evaporated in a high-temperature, high-humidity environment where indoor dust mites are highly active. On the other hand, in Comparative Examples 1 to 5, where the solid carrier did not contain a synthetic resin polymerized with monomers having a LogP value of 1 or higher, the Z / Y ratio was less than 2 times, meaning that the evaporation amount in a high-temperature, high-humidity environment and a low-temperature, dry environment was almost the same or less, indicating that the evaporation amount could not be changed according to the activity of mites. From the above, it is presumed that by using a highly hydrophobic synthetic resin as a carrier, evaporation is promoted as the hydrophobic mite repellent component is pushed out from the surface of the solid carrier, which has low affinity for moisture, in a high-humidity environment. [Explanation of Symbols]

[0072] 1. Solid carrier 2. Storage container for mite repellent composition 3. Mite repellent composition 4. Solid Carrier Storage Container 10. Mite repellent products

Claims

1. A mite repellent product that vaporizes mite repellent components from a solid carrier made of a synthetic resin polymerized with monomers having a LogP value of 1 or higher.

2. The mite repellent component according to claim 1 has a vapor pressure of 1.0 × 10 at 25°C. －５ Mite repellent products with a Hg level of mmHg or higher.

3. A mite repellent product wherein the synthetic resin according to claim 1 is at least one selected from the group consisting of polyolefins, polyesters, and phenoxy resins.

4. A method for repelling mites, comprising vaporizing the mite-repellent component of the mite-repellent product described in claim 1 into an indoor space.

5. The mite repellent product according to claim 1, wherein the ratio (Z / Y ratio) of the amount of mite repellent component transpired under high temperature and high humidity conditions (Z) to the amount of mite repellent component transpired under low temperature and dry conditions (Y) is adjusted to be 2 or more.

Images