JP6907106B2 - Repellent - Google Patents

Description

The present invention relates to a repellent used for animals such as rats and pests such as cockroaches.

Conventionally, sublimable substances such as camphor have been used as repellents for mice and the like (for example, Patent Documents 1 to 5). However, many sublimable substances have a peculiar odor. For example, many users find the odor of camphor unpleasant. Therefore, when using it, it is required to mask the odor of camphor, and for example, a method using a fragrance is known.

By the way, since most of the fragrances are lipophilic, they are easily compatible with camphor, which is a fat-soluble substance, and when they come into contact with each other, the camphor dissolves in the fragrance and loses its shape, so it is difficult to maintain it in a solid state. ..

Japanese Unexamined Patent Publication No. 2004-143058 Tomi No. 3032749 Japanese Unexamined Patent Publication No. 7-17805 Japanese Unexamined Patent Publication No. 2000-204004 Japanese Unexamined Patent Publication No. 2000-239108

An object of the present invention is to provide a repellent that exerts a repellent effect without interfering with the sublimation of a sublimating repellent component, can mask an unpleasant odor, and can easily recognize the end of use. ..

As a result of diligent studies to solve the above problems, the present inventors have found a solution means having the following configuration, and have completed the present invention.
(1) A solid repellent containing a sublimating repellent component, an inorganic powder having an average particle size of more than 0.05 mm and 10 mm or less, and a fragrance impregnated in the inorganic powder.
(2) The solid repellent according to (1) above, which contains 70 to 99.9% by mass of a repellent component and 0.05 to 25% by mass of an inorganic powder.
(3) A repellent method using the solid repellent according to (1) or (2) above.

According to the repellent according to the present invention, the repellent effect can be exerted without hindering the sublimation of the sublimating repellent component, the unpleasant odor can be masked, and the end of use can be easily recognized. By selecting the repellent component, it is possible to provide a repellent having an excellent usability, which exerts a sufficient repellent effect against animals such as rats and pests such as cockroaches.

The repellent according to the present invention is intended for animals such as rats and pests such as cockroaches, and is a repellent component having sublimation properties, an intended inorganic powder, and a fragrance impregnated in the inorganic powder. And include.

The repellent component of the present invention is not particularly limited as long as it has sublimation properties and has a repellent effect on various animals and pests. For example, camphor, naphthalene, paradichlorobenzene, anthracene, iodine, salicylic acid and the like 1 Species or two or more species are mentioned.

Among these, the rat brain is a rat such as a rat, a rat, a rat, a vole, a Japanese field mouse, a small Japanese field mouse, a harvest mouse; It is preferable because it exerts an effect. Camphor is a kind of terpenes obtained from camphor tree, but in the present invention, it may be derived from a natural product or may be obtained by synthesis.

The inorganic powder contained in the repellent of the present invention is not particularly limited as long as it is an inorganic powder having an average particle size of more than 0.05 mm and 10 mm or less. When the average particle size is 0.05 mm or less, when the repellent is compression-molded into tablets, the shape of the repellent is easily maintained even if the repellent component is sublimated, and the repellent remains in the repellent. Since the camphor is coated with inorganic powder, sublimation is likely to be hindered. On the other hand, if the average particle size exceeds 10 mm, the inorganic powder is too large to form a tablet or the like, resulting in poor moldability.

As described above, by using an inorganic powder having an average particle size of more than 0.05 mm and 10 mm or less, a repellent (molded product) having a good balance between shape retention and disintegration of the pharmaceutical product can be obtained. That is, as the sublimation of the repellent component progresses, the inorganic powder appropriately collapses due to the weight of the inorganic powder in the form of the repellent (molded product). Therefore, the repellent component can be satisfactorily sublimated and the repellent effect can be exhibited without the repellent component being coated with the inorganic powder. Furthermore, the change in the shape of the repellent that has reached the end of use can be easily visually recognized.

The average particle size of the inorganic powder is preferably 0.075 to 8 mm, more preferably 0.1 to 5 mm. For example, when the inorganic powder is spherical, the average particle size may be measured using a sieve, and when it is not spherical, it can be measured by a precision particle size distribution measuring device (Multisizer3, manufactured by Beckman Coulter).

Examples of the inorganic powder include calcium silicate, silica, talc, kaolin, mica, bentonite and the like, and one or more of them may be used in combination.

The inorganic powder of the present invention is impregnated with the fragrance described below. Therefore, those having porosity are preferable, and the whole powder to be used may be made porous, or a part of the powder may be made into a non-porous powder and used as a mixture. Further, the porous powder preferably has an oil absorption amount of about 0.1 to 5 times the powder's own weight.

The fragrance of the present invention is not particularly limited as long as the fragrance capable of masking the repellent is appropriately selected, and can be appropriately selected according to the repellent component to be used. Examples of fragrances include menthol, 1,8-cineole, hinokithiol, allyl isothiocyanate, borneol, limonene, linalyl acetate, linalol, peppermint oil, moon peach oil, hinoki oil, wasabi oil, rosemary oil, yomogi oil, and orange. When one or more kinds of oil, lavender oil and the like can be used and the repellent component is camphor, menthol, limonene, linalyl acetate, linalyl, peppermint oil, orange oil and lavender oil are preferable.

In the repellent of the present invention, the fragrance is impregnated with an inorganic powder so as not to come into direct contact with the repellent component. Most of the fragrances and repellent components are fat-soluble substances, and when both are used in combination, they have good compatibility and are not preferable. When both come into contact with each other, for example, a crystalline (solid) repellent component may be dissolved in a liquid fragrance and may not be formed as a pharmaceutical product.

The repellent of the present invention may contain other additives as long as the effects of the present invention are not impaired, and for example, ultraviolet absorbers, antioxidants, fungicides, fungicides, colorants and the like may be contained. One or two types can be mentioned.

In the repellent of the present invention, the content of the repellent component having sublimation property is preferably, for example, 70 to 99.9% by mass, preferably 80 to 99.85% by mass. The content of the inorganic powder is preferably 0.05 to 25% by mass, preferably 0.1 to 20% by mass. Further, the fragrance impregnated in the inorganic powder can be used up to a saturated impregnation amount with respect to the inorganic powder, and the content in the total amount of the repellent is 0.01 to 25% by mass, preferably 0.05 to 10% by mass. It is better to say.

Further, in the repellent of the present invention, the repellent component is contained in an amount of 3 to 2000 parts by mass, preferably 5 to 1000 parts by mass, and more preferably 100 to 500 parts by mass with respect to 1 part by mass of the inorganic powder. NS. The fragrance is contained in an amount of 0.1 to 10 parts by mass, preferably 0.1 to 5 parts by mass with respect to 1 part by mass of the inorganic powder.

The method for producing the repellent of the present invention is not particularly limited, and for example, an inorganic powder having an average particle size of more than 0.05 mm and 10 mm or less is mixed with a fragrance to impregnate the inorganic powder with the fragrance. Next, the fragrance-impregnated inorganic powder and the sublimating repellent component may be mixed and molded into the desired shape.

At the time of molding, for example, the component of the present invention can be molded using a pressure molding machine, a tableting machine or the like to form a solid molded body, which can be plate-shaped, columnar, conical, conical, spherical or spherical. , Tablets, granules, etc. Specifically, an inorganic powder impregnated with a fragrance to a saturated amount and a sublimating repellent component are mixed, and a predetermined amount thereof is wrapped in a gas-permeable material (for example, paper, non-woven fabric, film, etc.). After that, it may be pressure-molded and compression-molded into a plate shape.

The repellent of the present invention is used in places where animals (especially small animals) and pests are desired to be repelled, both indoors and outdoors, for example, in the kitchen, kitchen, under the sink, underfloor storage, warehouse, garage, entrance, attic, etc. Examples include gardens, flower beds, and fields.

The repellent of the present invention is, for example, harmful to rats such as Rattus norvegicus, Rattus norvegicus, Vole, Japanese field mouse, Small Japanese field mouse, Harvest mouse, Mogura, Inoshi, Harvest mouse, Itachi, Harvest mouse, etc. , Exhibits a sufficient repellent effect.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

(Example 1)
99.25% by mass of crystalline cypress, 0.25% by mass of peppermint oil, and calcium silicate powder as inorganic powder (Florite RM-20, average particle size: 2-3 mm, Sanwa Insectiside ( Co., Ltd.) was used in a proportion of 0.5% by mass to prepare a repellent. Specifically, first, calcium silicate powder and mentha oil were mixed, calcium silicate powder was impregnated with mentha oil, and calcium silicate powder impregnated with mentha oil was mixed with cypress. The obtained mixed powder was tableted to obtain a columnar solid repellent (diameter 20 mm and height 15 mm).

(Example 2)
A columnar solid repellent was obtained in the same procedure as in Example 1 except that 85% by mass of crystalline camphor, 5% by mass of mentha oil and 10% by mass of fluorite RM-20 were used. rice field.

(Comparative Example 1)
A columnar solid repellent was obtained in the same procedure as in Example 1 except that only crystalline camphor (100% by mass of camphor) was used.

(Comparative Example 2)
The same as in Example 1 except that silicic acid anhydride (Tokuseal NP, average particle size: about 10 μm, manufactured by Maruo Calcium Co., Ltd.) was used instead of fluorite RM-20 at a ratio of 0.5% by mass. A columnar solid repellent was obtained by the procedure.

(Comparative Example 3)
A columnar solid repellent was obtained in the same procedure as in Example 1 except that crystalline camphor was used at a ratio of 85% by mass, mentha oil was used at a ratio of 5% by mass, and Toxil NP was used at a ratio of 10% by mass.

<Verification of volatilization amount of repellent>
The mass of the repellent obtained in each Example and each Comparative Example was measured and allowed to stand at 40 ° C. for 4 days. After standing for 4 days, the mass of each repellent was measured, and the volatilization amount of the repellent was calculated from the mass of the repellent before and after the test. The results are shown in Table 1.

(Example 3)
Cylindrical in the same procedure as in Example 1 except that 99.4% by mass of crystalline camphor, 0.4% by mass of mentha oil and 0.2% by mass of Florite RM-20 were used. A solid repellent was obtained.

(Example 4)
Crystalline camphor 99.2% by mass, orange oil 0.3% by mass and silicic anhydride (Tokuseal 255LD, average particle size: about 250 μm, manufactured by Maruo Calcium Co., Ltd.) at a ratio of 0.5% by mass. A columnar solid repellent was obtained in the same procedure as in Example 1 except that it was used.

(Example 5)
Cylindrical in the same procedure as in Example 1 except that 99.7% by mass of crystalline camphor, 0.1% by mass of lavender oil and 0.2% by mass of Florite RM-20 were used. A solid repellent was obtained.

<Verification of repellent odor>
Table 2 shows the results of comparing the odors of the repellents obtained in Examples 3, 4 and 5 and Comparative Example 1 with those of camphor (Comparative Example 1). A sensory evaluation was performed on 10 people, and the odor was evaluated according to the following criteria.
A: I don't smell camphor B: I smell camphor but I don't care C: I'm worried about the smell of camphor D: I smell camphor

<Verification of volatilization amount of repellent>
The repellents of Examples 3, 4 and 5 were subjected to the same tests as in "Verification of the amount of volatilization of the repellent" performed in Examples 1 and 2 and Comparative Examples 1 to 3 described above. As a result, the repellents of Examples 3, 4 and 5 showed the same volatilization property of the repellents as those of Examples 1 and 2.

As shown in Table 1, the amount of volatilization of the repellent component was about the same as that of Comparative Example 1 of camphor alone, and the volatilization of the repellent component was not hindered. I understand. The reason is that the average particle size of the inorganic powders used in Examples 1 and 2 is relatively large at 2 to 3 mm, and it is presumed that the weight of the powder is related. That is, when the molded body becomes smaller due to the volatilization (sublimation) of camphor, the inorganic powder dispersed in the molded body also moves according to the size of the molded body or collapses from the molded body due to its own weight. As a result, it is presumed that the camphor remaining in the molded product is not easily covered with the powder, and the volatilization of the repellent component is not hindered. In Examples 1 and 2, since the volatilization of camphor is not hindered, it is presumed that the repellent effect on animals such as mice and pests is sufficiently exerted. Further, as shown in Table 2, it can be seen that the repellents obtained in Examples 3, 4 and 5 sufficiently mask the odor of camphor. Since the same results as in Examples 1 and 2 were obtained in the verification of the amount of volatilization of the repellent component, the present invention presents the present invention without interfering with the sublimation and repellent effect of the repellent component having sublimation properties. The odor can be masked.

On the other hand, it can be seen that the repellents obtained in Comparative Examples 2 and 3 hinder the volatilization of the repellent component as compared with Comparative Example 1 in which only camphor is used. It is presumed that the reason is that the average particle size of the inorganic powder used in Comparative Example 1 is as small as about 10 μm, and the powder itself is also light. That is, even if the camphor volatilizes and decreases, the powder is so light that it does not easily collapse due to its own weight, and the original shape of the molded product is easily maintained. As a result, it is presumed that the camphor remaining in the molded product became a form coated with powder, and volatilization was easily hindered. In addition, the repellents obtained in Examples 1 and 2 are not hindered from volatilization, and the molded body collapses with the volatilization of camphor, so that the change in the shape of the repellent that has reached the end of use can be easily visually recognized. I was able to.

Claims (3)

Seen containing a repellent component having a sublimation property and inorganic powder having an average particle size below 10mm exceed 0.05 mm, and a perfume impregnated in inorganic powder,
A solid repellent containing 100 to 500 parts by mass of the repellent component with respect to 1 part by mass of the inorganic powder. The solid repellent according to claim 1, wherein the inorganic powder contains a porous powder, and the porous powder has an oil absorption amount of 0.1 to 5 times the powder's own weight. A repellent method using the solid repellent according to claim 1 or 2.