JPH06227906A - Moth-proofing agent for clothes - Google Patents

Abstract

PURPOSE:To obtain a moth-proofing agent for clothes effective for the control of vermin such as casemaking clothes moth and black carpet beetle by using terpinen-4-ol which is an active component of essential oil of juniper berry, cardamon, nutmeg, etc., as an active component. CONSTITUTION:A moth-proofing agent for clothes capable of protecting clothes from biting damage with clothes vermin is produced by using terpinen-4-ol which is a natural component as an active component. The agent has strong moth-proofing effect, is harmless to the application worker and emits excellent fragrance. Even if the fragrance is transferred to clothes, it does not give unpleasant feeling and the transferred fragrance quickly vanishes. Since the active component is volatile, it is preferable to support the component on silica, alumina, etc., and more preferable to use in the form of a sustained release preparation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insect repellent for clothing, and more particularly to an insect repellent for clothing which protects the clothing from food damage of insects such as squid and scutellaria japonicus.

[0002]

2. Description of the Related Art Insect repellents for clothing are required to have a strong insect repellent effect and be nontoxic to users. Conventionally, paradichlorobenzene, camphor or naphthalene used as this kind of insect repellent is known to have a strong insect repellent effect, but since these insect repellents have a pungent odor, the user can Not only does it cause discomfort to the animals, but paradichlorobenzene is also regarded as a problem in terms of carcinogenicity. Further, if these insect repellents are used inadvertently in the same space, the clothing present in the space may be discolored.

Under these circumstances, there has been a demand for an insect repellent for clothing which is harmless to the human body and exhibits an effective insect repellent effect. The present inventors have focused on the fact that essential oils have an insect-repellent effect, have a strong insect-repellent effect, are nontoxic to users, have a good odor, and do not cause discomfort even if the odor is transferred to clothing, The inventors have invented a mosquito repellent that quickly loses its odor.

[0004]

According to the present invention, there is provided a mosquito repellent containing terpinen-4-ol as an active ingredient. In the present invention, terpinen-4-ol is an active ingredient of essential oil contained in juniper berries, cardamom, nutmeg and the like. This active ingredient can be used as a crude product or a substance containing this active ingredient as a main component.

[0005] Terpinen-4-ol can be diluted as necessary or used in the form of a suitable preparation together with an excipient or a carrier for easy use as an insect repellent. The shape of the preparation includes, for example, sheet, pill,
Granules, fine granules, microcapsules and the like can be mentioned. In addition, terpinen-4-ol may be absorbed into silica, talc or the like, natural or synthetic paper such as pulp mat, cotton, filter paper, or a non-woven fabric in an appropriate amount, and may be used after being wrapped with cloth, Japanese paper, or other material. it can. Examples of the excipient or carrier in these preparations include starch, lactose, silica,
Alumina and the like can be mentioned, but since the active ingredient of the present invention is volatile, it is preferable to support it on a porous excipient, such as silica or alumina, and more preferable to make it a sustained release preparation.

As a method for imparting a sustained release property, a method of impregnating a porous inorganic molding agent such as silica or alumina as mentioned above can be mentioned. In this case, the size and shape of the porous inorganic molding agent such as silica or alumina can be appropriately adjusted depending on the degree of sustained release, and can be used in various shapes such as spherical shape, pill shape, and powder shape. it can. Further, after being formulated into pills, granules and the like, the surface of the formulation may be coated to give sustained release, and microcapsulation may also provide sustained release. Further, these coating preparations, microcapsules and the like can be kneaded with a resin or the like and used. Preparation of these preparations can be performed by using a technique known in the art.

As an example, when impregnating activated alumina, the active ingredient of the present invention is impregnated into activated alumina in the form of powder, granules or tablets. The particle size of the activated alumina at that time can be appropriately selected depending on the degree of sustained release, and the weight ratio of the activated alumina and the active ingredient is preferably about 2: 1 to 5: 1. Further, the surface of the activated alumina particles impregnated with the active ingredient, for example,
The extent of sustained release can be adjusted by coating with a pigment containing peach as an active ingredient. Furthermore, the degree of sustained release can also be adjusted by wrapping the uncoated preparation with a polyethylene film, a microporous film, a non-woven fabric or the like.

Furthermore, for example, after cutting a coaster base paper or the like into a desired size, the active ingredient of the present invention can be permeated and used. The amount of the active ingredient to be permeated at this time can be appropriately adjusted depending on the type of the base paper to be permeated, but in the case of a size of about 3 × 4 cm of the coaster base paper, about 0.2 to 1 cc can be permeated. preferable.

It is also possible to unglazed a molded product molded from white porcelain clay and to permeate the bisque-fired molded product itself with the active ingredient of the present invention. At this time, since the active ingredient evaporates from the entire surface of the molded product, it is possible to control the sustained release property by coating a part or all of the molded product with a desired material. As another example, in the case of forming a microcapsule, the active ingredient, that is, terpinen-4-ol may be added to a solution of a cyclodextrin or other inclusion compound forming agent and the solvent may be removed. In addition, a method using cyclodextrin can be mentioned as an example of the formulation of the above-mentioned microcapsules. In this case, dextrin contains α-,
There is a branched dextrin having a side chain of a methyl group or an ethyl group as a β- or γ-isomer or a modified dextrin, and it can be carried out by using any of these or a mixture thereof. , Can be appropriately selected according to the purpose. Specifically, 99: 1 of water and cyclodextrin
It is obtained by mixing the above-mentioned active ingredients in a mixture of ˜70: 30 (weight ratio) to prepare a slurry liquid, and spray-drying this to prepare a powdery dried product.
As the cyclodextrin, a mixture obtained from the usual decomposition of starch may be used as it is, or the decomposed product may be purified to isolate a predetermined cyclodextrin for use. Further, dextrin may be mixed with the cyclodextrin depending on the target substance for inclusion. In the above-mentioned preparation, it is preferable that the active ingredient which is the inclusion target substance is usually contained in the obtained dry powder in an amount of about 3 to 30% by weight.

If necessary, antioxidants such as quinones, aromatic amines, aldehyde amines and phenols may be added.

[0011]

According to the insect repellent for clothing of the present invention containing terpinen-4-ol as an active ingredient, since the naturally occurring ingredient is used, it is not toxic to the user and exhibits an effective insect repellent effect. Further, terpinen-4-ol has a good odor and has a relatively high boiling point of 209 to 212 ° C., but has good volatility, and even if the odor is transferred to clothes, the odor disappears quickly.

[0012]

【Example】

Test Example 1 A glass petri dish having an inner diameter of about 4.2 cm and a depth of about 2 cm was laid with filter paper of the same diameter (Toyo Co., No. 5-C), and 0.02 cc of terpinen-4-ol was dropped, As test worms, 10 larvae of the beetle Beetle were released, the petri dish was covered with the lid and left at room temperature for 24 hours. 24 in Table 1
The mortality rate after time is shown.

[0013]

[Table 1] Test Example 2 A mayonnaise bottle having a volume of about 150 cc was charged with a wool test cloth having a diameter of about 4 cm and a weight of about 0.13 g, and 20 larvae of Pygma locust beetle as test insects were put therein, and terpinen-4-ol was set to 0 on the inner lid. A filter paper on which 0.012 cc was dropped was attached and the bag was sealed and stored for 20 days. Survival rate after 20 days and 20
The decrease rate of the test cloth for each day was examined. The results are shown in Table 2 together with the comparative example.

[0014]

[Table 2] Example 1 30 parts of terpinen-4-ol was impregnated with 70 parts of granular activated alumina (diameter 2 mm) to prepare a formulation. Example 2 20 parts of nutmeg was mixed with 80 parts of silica gel powder to prepare a formulation. Example 3 4 g of granular activated alumina containing terpinen-4-ol of Example 1 was wrapped with a non-woven fabric, put in a polyethylene garment case of about 20 liters, and woolen clothes were stored for one month.

Although the scent of terpinen-4-ol remained on the clothes, the odor disappeared within 30 minutes when the clothes were spread indoors and left to stand.

[0016]

According to the insect repellent for clothing of the present invention, an insect repellent having an effective insect repellent effect against harmful insects for clothing can be obtained.

Claims (1)

[Claims] 1. An insect repellent for clothing, which comprises terpinen-4-ol as an active ingredient.