JP2011105668A - Insect pest repellent composition and support containing the composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent pest repellent composition exhibiting an excellent repellent effect, which is safe, has high drying properties, and contains a useful pest repellent ingredient, and to provide a porous or fibrous pest repellent material impregnated with the pest repellent composition. <P>SOLUTION: The pest repellent composition includes solubilized p-menthane-3,8-diol. There is also provided a safe, porous or fibrous support having drying properties and a repellent effect, the support being impregnated with the pest repellent composition. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a human pest repellent for protecting a human body from pests such as mosquitoes, gnats, house dust mites, sand flies, ants and bed bugs, and more particularly to a wet tissue type pest repellent for human bodies.

Various patents have been filed for pest repellents. N, N-diethyl-m-toluamide (hereinafter referred to as “diet”) is well known as a pest repellent component, but it may cause dermatitis if used over a long period of time. Is limited. It has been recognized that p-menthane-3,8-diol slightly contained in eucalyptus leaves repels pests such as mosquitoes (Patent Document 1). As repellents containing this repellent component, those directed to gel fragrances (Patent Document 2) and solid ones (Patent Document 3) have been proposed. However, the former aims at the repellent effect of the repellent component by the radiation in a closed space such as a room, and its use is limited. The latter has the disadvantage that it is difficult to spread and use when applied to the human body.
A non-woven fabric is impregnated with a pest repellent component together with a silicate compound powder (Patent Document 4), and a support in which a pest repellent component is impregnated as an emulsion with an emulsifier has been proposed (Patent Document 5). Because the body is an essential ingredient, it is not suitable for people with allergic diseases such as sensitive skin and asthma. In the latter case, an emulsion containing an emulsion-like pest repellent component is impregnated into the support, resulting in stickiness, poor drying, and oil droplets of the repellent component locally attached to sensitive infants and sensitive skin. Not suitable for people.

Japanese Patent Publication No. Hei 3-80138 JP-A-2005-170914 JP2009-1501 Patent No. 4340015 JP2003-40703

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a solubilized pest repellent that is highly safe and easy to use, and a pest repellent material impregnated with it.

As a result of intensive studies to achieve the above object, the present inventor has reached the present invention having the following configuration.
(1) (a) p-menthane-3,8-diol 0.3 to 10%, (b) 11 to 50% of C2 to C4 alcohol, (c) anionic surfactant, nonionic surfactant, A pest comprising 0.05 to 5% of at least one surfactant selected from the group consisting of a cationic surfactant and an amphoteric surfactant, (d) 0.01 to 5% of a disinfectant, and an aqueous carrier Repellent,
(2) Pest repellent material in which a pest repellent is impregnated into a porous or fibrous support having a basis weight of 10 to 100 g / m ²

  According to the present invention, a pest repellent effect that is practical and safe against pests can be obtained.

  In the present invention, p-menthane-3,8-diol as an active ingredient showing a repellent effect exhibits a repellent effect on pests such as mosquitoes. And since it is highly safe for human animals, it is blended in an amount of 0.3 to 10% based on the total amount of the repellent composition. If it is less than 0.3%, the repellent effect is not sufficient, and if it exceeds 10%, it becomes sticky and is not practical.

  Alcohol is necessary for the effect of increasing the solubility of the repellent component, speeding drying after being applied to the human body, and preventing stickiness, and if it is 10% or less, the effect is not sufficient and the drying property is not good. If it is 50% or more, the alcohol odor becomes strong and irritation to the skin also appears, which is not practical.

  Surfactants include alkali metal salts or amine salts of C10 to C18 fatty acids, polyoxyethylene alkyl ether carboxylates, alkyl sulfate esters, polyoxyethylene alkyl ether sulfates, alkane sulfonates, N-acyl sarcosine Anionic surfactants such as salts, N-acyl glutamate, N-methyl-N-acyl taurate, oil sulfate ester salt, alkyl phosphate, polyoxyalkylene alkyl ether, glycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan Nonionic surfactants such as fatty acid esters, polyoxyethylene sorbitan esters, sucrose fatty acid esters, polyoxyethylene fatty acid esters, fatty acid alkanolamides, polyoxyethylene hydrogenated castor oil, alkylamine salts, al chlorides At least one surfactant selected from the group consisting of cationic surfactants such as alkyltrimethylammonium chloride and alkylbenzalkonium chloride, amphoteric surfactants such as alkylbetaines, fatty acid amidopropylbetaines, alkylamine oxides and alkyldiaminoethylglycines. 0.05 to 5% of the agent is blended. If it is 0.05% or less, solubilization of repellent components is not sufficient, and if it is 5% or more, stickiness or irritation appears.

Disinfectants include benzalkonium chloride, benzethonium chloride, didecyldimethylammonium chloride, caisson disinfectant, silver disinfectant, triclosan, triclocarban, polylysine, isopropylmethylphenol, chlorohexidine gluconate, parabens and A benzoate etc. are mix | blended 0.01 to 5%. If it is 0.01% or less, the effect of sterilization and antiseptic is not sufficient, and if it is 5% or more, the skin is stimulated, which is not practical.

As a support to be impregnated with a pest repellent, cotton, polyester, polyolefin, nylon, rayon, vinylon, cellulose, or a non-woven fabric thereof, or a woven fabric such as cotton, silk, polyester, or nylon, or a foam such as polyurethane Etc. can be used. Particularly preferred is a nonwoven fabric having a basis weight of 10 to 100 g / m ² .

  The pest repellent of the present invention may contain a moisturizing agent as necessary for improving safety in production and use. For example, collagen, hyaluronic acid and salt, trehalose, sorbitol, 1,3- Natural polymers such as butylene glycol, glycerin and dipropylene glycol, saccharides and glycols may be blended. Moreover, you may mix | blend ultraviolet absorbers, such as p-methoxycinnamic acid ester, and chelating agents, such as ethylenediaminetetraacetate and a citrate, as needed.

  The pest repellent prepared as described above is not limited to practical use forms such as sprays and lotions, but is preferably in the form of impregnation into a sheet substrate such as a nonwoven fabric.

EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to these examples.
A pest repellent is prepared by adding 3 g of pest repellent component p-menthane-3,8-diol, 0.2 g of polyoxyethylene lauryl ether, 40 g of ethyl alcohol and purified water and stirring.
Hereinafter, the pest repellents of Examples were prepared in the same manner.

A pest repellent wet tissue was prepared by impregnating 1.1 g of a rayon / polyester mixed nonwoven fabric (15 cm × 20 cm) having a basis weight of 30 g / m ² with about 4 g of the pest repellent described in Table 1.

Release 10 human striped mosquitoes in a 30cm x 30cm x 30cm cage, apply the pest repellent of Table 1 to one arm of the subject with a wet tissue, and leave it on the other arm for 5 minutes. I put it in. The number of mosquitoes landing on the unapplied arm was X, and the number of mosquitoes landing on the applied arm was Y. The repellent rate was calculated from the following formula.
Repelling rate (%) = (X-Y) / X x 100
The irritation was determined from the condition of the skin 24 hours after applying a repellent to the upper arm of 10 monitors. No abnormalities were rated as 10 for ◯, 8-9 for △, and 7 or more for X.
Transparency was judged from the appearance.
The dryness was determined by applying a repellent to the skin, and after 2 minutes of stickiness, “no stickiness”, “slightly sticky” Δ, “sticky” ×.

  Table 2 shows the results of the pest repellent rate and the skin irritation obtained as described above.

本発明の人体用害虫忌避剤入りウエットティッシュでの塗布は優れた害虫忌避効果と、刺激性もなく、また良好な乾燥性も得られた。

The application with the wet tissue containing the pest repellent for human body of the present invention gave an excellent pest repellent effect, no irritation, and good drying property.

Claims (2)

(A) 0.3 to 10% by weight of p-menthane-3,8-diol, (b) 11 to 50% of C _{2 to} C ₄ alcohol, (c) anionic surfactant, nonionic surfactant 0.05 to 5% of at least one surfactant selected from the group consisting of a cationic surfactant and an amphoteric surfactant, 0.01 to 5% of a disinfectant, and an aqueous carrier Solubilized pest repellent composition. A pest repellent material obtained by impregnating a 10 to 100 g / m ² porous or fibrous support with the pest repellent composition according to claim 1.