JP3955012B2 - Indoor pest control agent - Google Patents

Description

  The present invention relates to a chemical having a fragrance as well as controlling unpleasant pests such as mites that live indoors without using chemical components.

  Conventionally, there are many known drugs for repelling unpleasant insects such as mites that live in the house and adversely affect the human body, such as asthma, and for insect control purposes. As the composition, a composition using a chemical has been generally used conventionally, but even if the chemical has an effect of controlling unpleasant pests, it may adversely affect the human body itself. Not very good. For example, “chlorpyrifos”, which has been widely used as a termite control agent, has been totally banned under the Building Standards Law since July 2003. In view of this, the influence of chemicals on the human body has become a social problem. Recently, more environmentally friendly drugs with natural products as the main composition have been developed.

Japanese Patent Laid-Open No. 06-237799 JP 2002-154907 A JP 2003-190264 A

  Among the above conventional techniques, the invention described in Patent Document 1 has a composition in which tannic acid is mixed with either cypress oil or eucalyptus oil or with one of them. In the invention described in Patent Document 2, an arbitrary natural oil is selected from a large number of natural oils and is contained in a porous carrier. Furthermore, the invention described in Patent Document 3 is a composition in which a natural fragrance is blended with a synthetic fragrance to form an aroma deodorant.

  In these prior arts, cypress oil and eucalyptus oil are disclosed, but there is no disclosure about what is effective when both cypress oil and eucalyptus oil are used, and what is effective. In each invention, there is no recognition that it is a specific mixture. In addition, the disclosure of the invention in Patent Document 1 uses ethyl alcohol as a solvent, and the blind test is not disclosed although ethyl alcohol itself has a sterilizing effect.

  In this invention, the medicine aiming at the control of the unpleasant pest which made cypress oil and eucalyptus oil into necessary and sufficient mixing object agent and made this into the form of the agent which can be used stably is disclosed. Specifically, the drug of the present invention is mainly composed of hinoki essential oil and eucalyptus oil, and a surfactant for food additives, a defoaming agent for food additives, and alcohols are blended in this, and mixed stably in water. . Here, cypress essential oil and eucalyptus oil function as active ingredients for repelling the objectionable pests. A surfactant for adding food and an antifoaming agent are added to emulsify these oil components. Alcohols function as solvents for the two oil components.

About the compounding ratio of cypress oil and eucalyptus oil, each was 0.05 weight% or more with respect to the whole chemical | medical agent, and made the total into the range of 0.1 weight%-10 weight%. More preferably, cypress oil and eucalyptus oil were blended equally in the above range. The reason why 0.05% by weight is set as the lower limit is that, from the results of the experiment, if the blending was lower than that, the expected repellent effect could not be sufficiently exhibited. The upper limit is set to 10% by weight because not only the repellent efficiency is not greatly improved even if it is mixed more than this, but also the product cost becomes so high that it is not suitable for mass sales. The activities of cypress oil and eucalyptus oil under a single atmosphere are known. The reason why the coating amount of relative cotton cloth and 20 to 50 g / ^{m 2} are that repellency valid unpleasant pest is less than 20 g / ^{m 2} is low, it exceeds 50 g / ^{m 2} This is because not only a dramatic repellent effect can be expected compared with a coating amount less than that, but also the cost is increased.

  In the present invention, since all the additives used are recognized as natural products or foods, and this is developed as an emulsion in water, it is not harmful to the human body and becomes a non-flammable drug. It is also very safe for use inside.

  When the agent of the present invention was used, a very high tick repellent rate was shown as shown in the examples. Therefore, it functions as a drug for effectively repelling unpleasant pests, and at the same time, since all the ingredients are natural ingredients or ingredients for food addition, it can be made an effective drug without adverse effects on the human body. In addition, when this chemical is applied to cotton cloth, the cotton cloth itself can be used as a control cloth, so that it can be effectively used for futon fabrics and clothing that tend to inhabit mites.

  Hereinafter, preferred embodiments of the present invention will be described. First, when confirming the effect according to the formulation of the present invention, cypress essential oil for insect repellent action is manufactured by Owase Port Service Co., Ltd., and eucalyptus oil for insect repellent and antibacterial action is GRDAVIS PTY. LTD. Using Eucalyptus oil 90/95% cineole BP, L-7D from Mitsubishi Foods Co., Ltd. as a surfactant for food additives, and Shin-Etsu Chemical Co., Ltd. as a defoamer for food additives. A silicon-based KM72F was used, and a glycerin reagent manufactured by Wako Pure Chemical Industries, Ltd. was used as the alcohol, which was developed into chlorinated fresh water.

  As a result of using a polyglyceride system as a surfactant for the purpose of emulsion, a stable liquid in which oil and water are not separated was obtained. The addition amount is effective in the range of 0.5 to 20 parts by weight with respect to 1 part by weight of the oil component, but if it is small, the stability is lowered, and if it is large, it takes time to dissolve the surfactant. Therefore, it is preferably 3 to 10 parts by weight. As an antifoaming agent, any antifoaming agent used in paints can be used. However, in consideration of safety to the human body, a silicon system used for food is adopted. The added amount is suitably 0.01 to 0.5% by weight in the emulsion. The solvent is not particularly limited as long as it is an alcohol, but ethyl alcohol and methyl alcohol have a low flash point and are dangerous when used. Therefore, glycerin having a low risk grade was used in this example. In addition, if it is similar to glycerin, it is applicable.

表１のように調製した薬剤について、以下に示すように効果確認のための各種試験を行った。

About the chemical | medical agent prepared as Table 1, various tests for an effect confirmation were performed as shown below.

この結果より、本試験の薬量設定は３０ｇ／ｍ^２とすることにした。 (Confirmation of repellent effect of drugs on ticks)
The repellent performance of the mite-proofed carpet against the leopard mite was confirmed using the drugs prepared according to Table 1. The test was conducted in two stages: a preliminary test and a main test.
(Preliminary test)
In setting one dose section in this test, the relationship between dose and repellent rate was investigated by a simplified method.
1) Processing object: 100% cotton cloth (Gold width 3)
2) Test dose range; 1 g, 5 g, 10 g, 50 g, 100 g / m ²
3) Test method: In accordance with the invasion prevention method specified by the Interior Fabric Performance Evaluation Council, the test was carried out by a simplified method with 3 iterations.
4) Results; Table 2 shows the repellent rate in each dose range.

From this result, the dose setting of this test was decided to be 30 g / m ² .

(main exam)
1) Test specimen (1) 100% cotton with no chemical processing (gold width 3); for blanks designated by the Interior Fabrics Performance Evaluation Council (2) Gold width treated with 30 g / m ² equivalent of the emulsion prepared in the formulation example 3) 2) Sample preparation method 3 g of the emulsion prepared in Prescription Example 1 was accurately weighed into a 10 ml volumetric flask and made up to a total volume of 10 ml with ion-exchanged water. After sufficiently stirring this solution, 1 ml thereof was uniformly applied to a 100 cm cotton cloth (gold width 3) having a size of 10 cm × 10 cm (0.01 m ² ) using a whole pipette. In the untreated control group, only ion-exchanged water was treated in the same manner. Drying was performed at room temperature for 3 hours.
3) Test mite Dermatophagoides pteronyssinus (Tokyo Women's Medical University) currently used at Osaka Kasei Co., Ltd. was used. The tick density of the tick medium was measured in advance and confirmed to meet the test regulations.
4) Test method Conforms to the invasion prevention method specified by the Interior Fabrics Performance Evaluation Council.
The outline is that a test specimen is laid on a glass petri dish having a diameter of 4 cm, and 50 mg of an attracting bait (a mixture of powdered experimental animal feed and dry yeast in a ratio of 1: 1) is added to the center, and then a diameter of 9 cm. Installed in the center of the glass petri dish. Next, a mite culture medium containing 10,000 mites in a portion satisfying the conditions of the outer periphery of the 4 cm glass petri dish and the inside of the 9 cm glass petri dish was uniformly tested. It was placed in a plastic container for food preservation containing saturated saline, covered, and allowed to stand at 25 ° C. under all dark conditions. After 24 hours, mites that entered the 4 cm glass petri dish were measured, and the repelling rate was calculated according to the following formula. The test was repeated 5 times. When the average number of mites invading the control group was less than 1000, the test was re-tested.

Repelling rate (%) = (number of invading mites in control group−number of invading mites in test group) / number of invading mites in control group × 100

First, Table 3 shows the results of measuring the density of the test mite medium.

表４に示した成分は、比較例１であり、表５に示した成分は比較例２である。比較例１ではユーカリ油を全く混合せず、比較例２ではヒノキ精油を全く混合しないもので、その他の配合については本発明の実施品相当に調合した。
このようにして概要に沿って試験を行った結果を表６〜８に示す。ここで、表６は実施品についての結果、表７は比較例１についての結果、表８は比較例２についての結果を示すものである。

インテリアファブリックス性能評価においては、忌避率５０％以上が有効性の基準とされている。今回試験した検体においては、表６に示す実施品については７４．０％のダニ忌避率が得られた。また、綿布への処理量については、表１によって調製された乳剤を３０ｇ／ｍ^２処理することにより、表２に示すように綿布に有効なダニ忌避性能を付与することが出来ると考えられる。一方、ユーカリ油を混合しなかった比較例１ではダニ忌避率が３９．２％と非常に低い数値を示し、ヒノキ精油を混合しなかった比較例２についてもダニ忌避率は４６．１％しかなかった。これに対して実施品が７４．０％のダニ忌避率を達成したということは、ユーカリ油とヒノキ精油の成分が相乗的に作用することにより、幅広いダニ忌避性能を示したと考えている。即ち、ユーカリ油とヒノキ精油が化学反応を起こしたのではなく、それぞれの有効成分が異なることによって、漏れのない幅の広い忌避効果を示したものと判断することができる。 (Contrast between the implemented product and the comparison product)
The specimens used in the test were prepared with the components shown in Table 1, which are the products of the present invention, and the following two types.

The components shown in Table 4 are Comparative Example 1, and the components shown in Table 5 are Comparative Example 2. In Comparative Example 1, eucalyptus oil was not mixed at all, and in Comparative Example 2, cypress essential oil was not mixed at all. Other blends were prepared corresponding to the products of the present invention.
Thus, the result of having tested according to the outline | summary is shown to Tables 6-8. Here, Table 6 shows the results for the practical products, Table 7 shows the results for Comparative Example 1, and Table 8 shows the results for Comparative Example 2.

In the interior fabrics performance evaluation, a repellent rate of 50% or more is a criterion for effectiveness. In the samples tested this time, a tick repellent rate of 74.0% was obtained for the products shown in Table 6. As for the amount of treatment on the cotton cloth, it is considered that an effective tick repellent performance can be imparted to the cotton cloth as shown in Table 2 by treating the emulsion prepared in Table 1 with 30 g / m ² . On the other hand, in Comparative Example 1 in which eucalyptus oil was not mixed, the mite repellent rate was 39.2%, which was very low, and in Comparative Example 2 in which cypress essential oil was not mixed, the mite repellent rate was only 46.1%. There wasn't. In contrast, the fact that the product achieved a tick repellent rate of 74.0% considered that the components of eucalyptus oil and cypress essential oil acted synergistically to show a wide range of mite repellent performance. That is, it can be judged that the eucalyptus oil and the hinoki essential oil did not cause a chemical reaction, but showed a wide repellent effect with no leakage due to different active ingredients.

  In this example, the common leopard mite that inhabited relatively commonly was used as a sample. However, it was effective for at least the same mites, fleas, and other unpleasant pests. It is considered that there is a removal effect.

  Since the present invention is composed of a composition that does not adversely affect the human body and does not cause a chemical reaction, safety can be guaranteed even if it is used. In addition, since it contains a large amount of water, it is a non-flammable drug, and its danger in use is extremely low. Furthermore, since each composition is easily procured, there is no problem in mass productivity, and industrial applicability is high as a suitable material for housing equipment and clothing.

Claims (7)

  An indoor pest control agent containing 0.05% by weight or more of cypress essential oil and eucalyptus oil, and the total is 10% by weight or less.   The indoor pest control agent according to claim 1, wherein the cypress essential oil and the eucalyptus oil are in a weight ratio of 1: 1.   The indoor pest control agent according to claim 1, wherein the agent is an emulsion.   The indoor pest control agent for indoor use according to claim 3, wherein the surfactant and antifoaming agent for emulsification are a surfactant and antifoaming agent for food addition.   The indoor pest control agent according to claim 1, wherein the solvent of hinoki essential oil and eucalyptus oil is glycerin.   The indoor unpleasant insect control cloth which apply | coated the indoor unpleasant insect control chemical | medical agent in any one of Claims 1-6 to cotton cloth. The indoor unpleasant pest control cloth according to claim 6, wherein the amount applied to the cotton cloth is 20 to 50 g / m ² .