JP2001270802A - Pest repellent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a pest repellent, especially a wet-tissue-type pest repellent, hardly exhibiting sticky feeling at the time of use, capable of providing powdery feeling, and excellent in persistence of pest-repellent effects. SOLUTION: This pest repellent is characterized in that the pest repellent is obtained by allowing a nonwoven fabric having 20-80 g/m2 weight to hold chemicals comprising a powder, a pest-repellent component and an alcohol, and the powder comprises 50-100 wt.% silicic acid compound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pest repellent, particularly to a wet tissue type pest repellent.

[0002]

2. Description of the Related Art Various forms of insect repellents have been studied to prevent damage from biting insects such as mosquitoes and gnats. Typically, preparations such as aerosols and creams are known. And recently, it can be easily applied to the application site,
Attention has been focused on wet-tissue-type pest repellents that are easy to carry. However, in the case of a preparation only impregnated with a pest repellent component, the feeling of use was poor due to stickiness during use.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, has no stickiness at the time of use, can impart a dry feeling, and has excellent persistence of pest repellent effects. An object of the present invention is to provide a pest repellent, particularly a wet tissue type pest repellent.

[0004]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the following objects are satisfied by the following pest repellents, and have reached the present invention. (1) For a nonwoven fabric having a basis weight of 20 to 80 g / m ² ,
A pest repellent comprising a powder, a pest repellent component and a drug containing alcohol, wherein the powder comprises 50 to 100% by weight of a silicate compound.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The nonwoven fabric used in the pest repellent of the present invention has a basis weight of 20 to 80 g / m ² , preferably 20 to 50 g / m ² and is, for example, polyester, polyolefin, nylon, cotton, rayon. , Vinylon, cellulose and the like. Among them, rayon, polyester and cellulose are preferable in consideration of strength and feeling of use. Further, rayon or a mixture of rayon and another material such as polyester (particularly, 70-80% rayon and 20% polyester)
30%). The nonwoven fabric has a tear strength [5 × 5
1. cm from the center of one side of the specimen to the center
A 5 mm long cut is made and the maximum stress at which the specimen tears when pulled (each of the sections separated by the cut from a different angle of 180 °) is divided by the thickness of the specimen in units of N / mm. Expressed] about 5 to 15 N / mm
Preferably, basis weight 20 to 30 g / m tear strength of about 5~12N / mm when ^2, basis weight 30 g / m ² greater than 50 g / m ² or less of tear strength about 7 when
14 N / mm, weight per unit area is larger than 50 g / m ² and 80 g
/ M ² or less, a tear strength of about 7-14 N / mm is particularly preferred.

The basis weight of the nonwoven fabric is less than 20 g / m ² or 8
If it exceeds 0 g / m ² , the desired incorporation, retention, application, and impregnation of the drug having the powder into the nonwoven fabric cannot be obtained, and furthermore, a wet tissue type that simultaneously satisfies the feeling of use and the long-term repellent effect can be obtained. No pest repellent is available. If the thickness of the nonwoven fabric is too thin, the necessary amount of the drug cannot be impregnated, and if it is too thick, the feeling of use will deteriorate and it will be difficult to carry it.
It is good to be 5 mm, preferably 0.3-1 mm. Further, if necessary, a drug-impermeable layer may be provided on one side, side face, or the like of the nonwoven fabric, and is provided by bonding a drug-impermeable film or the like or heat-sealing.

[0007] The agent of the present invention comprises a powder, a pest repellent component and an alcohol.
What is necessary is just to hold about 00 ml / m ² . As a specific example, a non-woven fabric made of rayon having a basis weight of 40 g / m ² or a mixture of rayon and polyester has a weight of 120 to 170.
ml / m ^2, the nonwoven fabric basis weight consisting of a mixture of rayon or rayon and polyester 50g / m ² 150~2
What is necessary is just to hold 20 ml / m < ² >. What is necessary is just to apply | coat and immerse the said chemical | medical agent to the said nonwoven fabric as a holding | maintenance means, and a required amount of powder, a pest repellent component, and alcohol adhere and take in the fiber structure of a nonwoven fabric.

The above powder is composed of a silicate compound of 50 to 100.
%, Preferably only a silicate compound. Examples of the silicic acid compound include hydrophobic silica, calcium silicate, diatomaceous earth, high-purity silica, silicic anhydride, and the like. Of these, silicic anhydride is preferable. In detail, the silicic anhydride has an average particle diameter of about 3.0 to 12.0 μm, a specific surface area of about 30 to 800 m ³ / g, a pore diameter of about 30 to 250 °, and a pore volume of about 0.03. ~ 2ml / g, oil absorption 50ml /
It is particularly preferable to satisfy at least one physical property value of 100 g or less, and it is more preferable to satisfy all of them. These silicic anhydrides may be used alone or as a mixture of two or more kinds.
The content may be 20.0% by weight, preferably 1.0 to 10.0% by weight.

[0009] 0 to 50% by weight of the powder is an alkenyl succinate starch exemplified by inorganic powder such as talc, calcium carbonate, magnesium stearate, acid clay, white carbon, pearlite, etc., octenyl succinate corn starch aluminum and the like. And natural powders such as silk powder.

Examples of the pest repellent include various synthetic or natural compounds having a repellent action or a blood-sucking inhibitory action against biting pests. For example, N, N-diethyl-m-toluamide (hereinafter also referred to as "diet"), 2
-Ethyl-1,3-hexadiol, butyl 3,4-
Dihydro-2,2-dimethyl-4-oxo-2H-pyran-6-carboxylate, n-hexyltriethylene glycol monoether, methyl 6-n-pentyl-
Examples include cyclohexene-1-carboxylate, dimethylphthalate, eucalyptol, α-pinene, geraniol, citronellal, camphor, linalool, terpenol, carvone, dioctyl phthalate, dibutyl phthalate, naphthalene, and the like. In addition, essential oils and extracts extracted from cinnamon bark, camphor, lemongrass, clover, scotch, geranium, bergamot, laurel, pine, red peach, benny royal, eucalyptus, indian sedan and the like can be exemplified. Further, pyrethroid compounds such as pyrethrin, allethrin, phthalthrine, resmethrin, flamethrin, phenothrin, permethrin, cyphenothrin, praletrin, etofenprox, empentrin, transfluthrin and derivatives, analogs, isomers and the like thereof can also be used. .

These pest repellent components can be used alone or in combination of two or more in a drug, and for example, can be contained in an amount of 0.1 to 50% by weight, preferably 1.0 to 40% by weight. .

Examples of the alcohol include ethyl alcohol, isopropyl alcohol, various denatured alcohols and the like, and one or more selected from these can be used. Among these, it is preferable to use denatured alcohol which causes little irritation to the skin, and it may be blended so as to be 30 to 90% by weight in the drug.

In the present invention, water and other solvents such as ethylene glycol, as long as the effects of the present invention are not impaired, are improved in order to improve the feeling of wetness, reduce irritation to the skin, and reduce the danger of flammability. 1,5-pentanediol,
Hexylene glycol, glycerin, diethylene glycol, trimethylene glycol, 1,6-hexanediol, propylene glycol methyl ether, dipropylene glycol, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene carbonate, polyethylene glycol, propylene glycol, etc. as solvents You may use together. These solvents are preferably used in combination with water.

If necessary, various additives may be added to the drug. For example, sorbitan triolate, polyoxyethylene monooleate, polyoxyethylene nonylphenyl ether, polyoxyethylene hydrogenated castor oil, tripolyoxyethylene Surfactants such as alkyl ether, decaglycerin monooleate, propylene glycol dioleate, polyoxyethylene stearamide, polyoxyethylene / polyoxypropylene glycol, polyoxyethylene lauryl ether phosphate, stearyl alcohol, polyvinylpyrrolidone, and lanolin fatty acid : Perfume ingredients such as menthol, camphor, mint oil, etc .: phenol, paraoxybenzoate, salicylic acid and its salts, benzalkonium chloride,
Germicidal and preservative components such as cetylpyridinium chloride and chlorhexidine gluconate: moisturizing components such as sorbit, glycerin, propylene glycol, peach extract, aloe extract, and loofah extract: UV absorption (blocking) of ethyl paraaminobenzoate, sinoxate, oxybenzene, etc.
Ingredients: chlorohydroxyaluminum, aluminum
Antiperspirant and deodorant components such as zirconium chlorhydrate:
A dye component and the like can be added as needed. Furthermore, in order to promote uniformity of various components in the drug,
Substances having a dispersing / solubilizing action, such as the above-mentioned surfactants, 1,3-butylene glycol and glycerin fatty acid esters, may be added.

The pest repellent of the present invention is packaged for the purpose of stability and portability, but may be packaged for each preparation or a plurality of preparations may be packaged together. And because it is a wet tissue type, take out the required amount from the packaging,
It may be used to apply the medicine by rubbing it against the skin by hand and wiping it.

The pests that can be the object of the present invention include various biting pests. For example, mosquitoes, blackflies, mites, fleas, flies, bedbugs, flies and the like are shown.

[0017]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto.

Embodiment 1 1. Pest repellent test (1) Preparation of pest repellent 1.3 g of a nonwoven fabric (16 cm × 20 cm) made of a mixture of rayon and polyester having a basis weight of 40 g / m ^{2 was} prepared as shown in Table 1.
A wet tissue type pest repellent impregnated with 4.7 ml of each of the described drugs 1 to 4 was prepared.

[0019]

[Table 1] Godball G having the following physical properties as silicic anhydride
BH (trade name: manufactured by Suzuki Yushi Kogyo KK) was used.

[0020]

[Table 2]

(2) Test Method Twenty adult female Aedes albopictus were released into a basket of 33 cm × 48 cm × 40 cm. The above-mentioned pest repellent (drugs 1 to 3) was applied to one arm (wrist to elbow) of the subject, and the other arm was left untreated without being applied. At 5 minute intervals, the arm of the subject was alternately placed in the basket, and the number of Aedes albopictus landing on the arm during this time was measured. The repellency was determined from the results. Repellent rate (%) = (AB) / A × 100 A: Number of landings without treatment B: Number of landings with treatment

(3) Test results The results are shown in Table 3. By applying the pest repellent of the present invention, Aedes albopictus could be effectively repelled for 10 hours.

[0023]

[Table 3]

2. Sensory test (1) Preparation of pest repellent A 1.3 g nonwoven fabric (16 cm × 20 cm) made of a mixture of rayon and polyester with a basis weight of 40 g / m ^{2 was} prepared as shown in Table 1.
A wet tissue type pest repellent impregnated with 4.7 ml of each of the described drugs 1 to 4 was prepared.

(2) Test method The above pest repellent was applied to the upper arm of 10 subjects, and the feeling of use (there was no stickiness and there was a dry feeling) was shown in Table 4.
The evaluation was based on the described criteria (rating).

(3) Test results The results are shown in Table 4. It was confirmed that the pest repellent of the present invention had no stickiness, had an excellent dry feeling, and had a good feeling in use.

[0027]

[Table 4]

Example 2 Preparation of pest repellent, sensory test and pest repellent test (1) Preparation of pest repellent A rayon having the following basis weight (40, 18, 100 g / m ² ) 3
Wet tissue-type insect repellents were prepared by impregnating 4.7 ml of each of the seed nonwoven fabrics with the agents shown in Table 6.

[0029]

[Table 5]

[0030]

[Table 6]

(2) Sensory Test Method and Results The test method was the same as in Example 1. Table 7 shows the test results.
You. 40g / m ^TwoAnd basis weight 100g / m^TwoNo
The pest repellent using woven fabric had excellent usability, but
18g / m^TwoPest repellent using nonwoven fabric made of
It was very bad.

[0032]

[Table 7]

(3) Pest repellent test method and results A pest repellent test was conducted using a pest repellent using a nonwoven fabric having a basis weight of 40 g / m ² and a basis weight of 100 g / m ² which gave a good feeling in use in the sensory test. The test method was the same as in Example 1. Table 8 shows the test results. The pest repellent using a nonwoven fabric with a basis weight of 40 g / m ² maintained the repellent effect, whereas the pest repellent using a nonwoven fabric with a basis weight of 100 g / m ² had a repellent effect from the start of each of the chemicals 5 and 6. It was weak and hardly repellent after 2 hours and was not practical.

[0034]

[Table 8]

Formulation Example Non-woven fabric (16c) made of rayon with a basis weight of 40 g / m ²
(m × 20 cm) 1.3 g of a wet tissue type insect repellent impregnated with 4.7 ml of the following chemicals.

[0036]

[Table 9]

[0037]

[Table 10]

[0038]

[Table 11]

In Formulation Examples 1 to 3, 1,3-butylene glycol was replaced with ethylene glycol (1,3-propanediol), hexylene glycol, glycerin, diethylene glycol, ethylene glycol monobutyl ether, propylene carbonate, polyethylene glycol or It may be replaced by propylene glycol.

[0040]

Industrial Applicability According to the present invention, there is provided a pest repellent which has no stickiness at the time of use, can give a dry feeling, and has excellent persistence of pest repellent effects, particularly a wet tissue type pest repellent. Can be.

Claims (1)

[Claims] A nonwoven fabric having a basis weight of 20 to 80 g / m ² holds a drug containing a powder, a pest repellent component and an alcohol, and the powder contains a silicic acid compound of 50 to 1 g / m ^2.
A pest repellent comprising 00% by weight.