JP2002275014A - Pest repellent for article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a new pest repellent for articles having no side effect on the skin and having sure repelling effect on insect pests impairing human health and/or giving unpleasant feeling including sense of uncleanliness and aversive feeling such as cockroach and mite and other arthropod. SOLUTION: This pest repellent for articles contains, as the active ingredients, a total 0.01-20 wt.%, on a dry plant basis, of two kinds of water extract ingredients respectively derived from mugwort and Houttuynia cordata in the weight ratio of (20:80) to (80:20) based on dry plants, and optionally contains 0.005-10 wt.% of at least one kind of water extract ingredient derived from plant(s) selected from Panax ginseng, Japanese pepper leaves and loquat leaves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pest repellent for articles containing a pest repellent plant extract which is highly safe for the human body and the environment, and is used mainly for indoor inhabiting insects such as houses and factories, and for indoor use. The present invention relates to a pest repellent for articles used as a repellent or repellent for pests such as walking invading insects and flying invading insects.

[0002]

2. Description of the Related Art In general, houses and the like include indoor inhabiting insects such as scorpions, spider mites, acarid mites, mites spiders, cucumbers, brown spiders, cockroaches, etc., crickets L, crickets SW, horned beetles, ants, giant earwigs, lynx spiders, spiders, and ragweeds. , Argiope bruennichi, Red-headed Spider, wasp spider, Crab spider, spider mite, micro spiders,
Walking invaders such as salad crabs, paddy beetles, butterflies, ball flies, midges, midges, crickets LW, black leaf mushrooms, flea flies, leafhoppers, bees, gummy beetles, carabid beetles, beetles, mukaka, planthoppers, grasshoppers, and small bees , Himetobikera,
Mosquitoes, horned bee honeybees, aphids, scale insects W, thistle, thrips, hirozukoga, kibaga,
Drosophila, grasshopper, whitefly, meiga, ant W,
Scarlet beetle, Ligustrum, Hishigratta, Shishigatta, Scorpion turtle, Scarabaeidae, Shimauka, Kida thrips, Maruhakibaga, Nisemai moga, Kusamogliga, Tsutsuminoga, Nemaruhakigaga, Kazaribaga, Hikenagakibaga, Tribaga, Small moth, Shakubiga Exists. In some cases, these small animals may stab people or adversely affect the indoor hygiene.

[0003] As a method of preventing these pests or unpleasant insects from entering the interior of a house or a factory, extermination and repelling are performed.

As a specific extermination method, a composition containing an organic chlorine compound, an organic phosphate, a carbamate or the like is sprayed or applied to the inside or outside of a house or a factory. In addition, as repellents, in addition to pyrethroid compounds, N, N-diethyl-m-toluamide, 2-ethyl-
A composition containing 1,3-hexanediol, n-hexyltriethylene glycol monoether, dioctyl phthalate and the like and plant extracts such as camphor, clover and eucalyptus is sprayed or applied. Further, in addition to organic chlorine compounds, organic phosphates, carbamates, and pyrethroid compounds, N, N-diethyl-m-toluamide, 2-ethyl-1,3-hexanediol, and n-hexyltriethylene glycol monoamine Compositions containing ether, dioctyl phthalate and the like are also used. In addition to these drugs, compositions containing plant extracts such as camphor, clover and eucalyptus are also known.

[0005]

However, the above-mentioned conventional chemicals such as insecticides and repellents have a problem in safety to human body and environment, and are in contact with human body directly or inhaled. It is not so preferable to use, and the above-mentioned conventional plant extracts have an irritating odor or skin irritation, and the plant extract-containing pest repellents that have been discovered in the present invention are sufficiently satisfactory. Is hard to say.

Further, the repellent effect of a plant extract obtained from mugwort or dokudami against cockroaches, mites and other pests, particularly the repellent effect of mugwort and dokudami when used in combination, and the amount of the compound at that time have not yet been elucidated. .

Accordingly, the present invention solves the above-mentioned problems, and is useful for preventing pests such as cockroaches, mites, and other arthropods that hinder human health and that cause discomfort such as uncleanness and disgust. It is an object of the present invention to provide a novel pest repellent for articles which has a repellent effect and has no side effects on the skin.

[0008]

In order to solve the above-mentioned problems, in the present invention, a water extract component of mugwort and a water extract component of dokudami are used in an extraction plant having a weight ratio of dried plant equivalent of 2%.
It was blended in the range of 0:80 to 80:20, and was used as a pest repellent for articles containing this as an active ingredient. In the pest repellent for articles of the present invention, the water extract component of mugwort and the water extract component of Dokudami are in the range of 20:80 to 80:20 in terms of dry plant weight of the raw materials for extraction, and are converted to dry plant weight. 0.01 to 20% by weight, preferably 0.1 to 20% by weight.
It is preferable to add 1 to 10% by weight.

The pest repellent external preparation for skin of the present invention constituted as described above is obtained by using a predetermined amount of a water extract component of mugwort and a water extract component of dokudami, as is clear from the experimental results described later. Thereby, a repellent effect against cockroaches and mites can be surely exerted. In addition, since natural plant components which have been collected and concentrated by water extraction are added as active ingredients without particularly adjusting the components, their action is mild and there is no side effect even if they adhere to the skin.

[0010] Further, in the above pest repellent external preparation for skin,
By adding a water extract component of one or more plants selected from ginseng, pepper leaf and loquat leaf, the combined effect of the water extract component of mugwort and water extract component of Dokudami may act more synergistically. It is conceivable, and the pest repellent effect is more reliably exhibited.

The content of the water extract component of mugwort and the water extract component of prickle in the pest repellent skin preparation is 0.01 to 20% by weight, preferably 0.1 to 20% by weight in terms of the dry plant weight of the raw material for extraction. Although it is 10% by weight, the reason for such a numerical limitation is that if it is less than 0.01% by weight, the pest repelling effect is very weak, and if it does not exceed 20% by weight, it is possible to provide a pest repelling effect that can be exhibited. It is.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An example of a method for preparing a water extract used in the present invention will be described. A water extract component of mugwort or a water extract component of a mudwort is a perennial plant of the Asteraceae family such as Artemisiaprinceps Pamp. Alternatively, a plant such as a leaf of a closely related species thereof is put in water (preferably purified water) having a dry weight of 2 to 8 times, for about 5 to 10 days, preferably about 60 to 180 hours. , And eluted and dispersed components contained in an aqueous extract of mugwort or dokudami.

The extraction temperature is preferably about 10 to 90 ° C., more preferably about 15 to 40 ° C., and natural extraction can be performed at room temperature. Extraction is performed by drying mugwort and dokudami, and 3-5 kg in dry weight of purified water 10-20 at room temperature.
The extract is immersed in a liter for about 120 hours, and naturally extracted to obtain an extract containing an aqueous extract of mugwort or prickle. In addition, the said dry weight is the dry plant weight which heats the water | moisture content contained in a sample to a boiling point (105-110 degreeC), and is dried normally, as it is performed with respect to a plant sample.

Then, the water extraction component of mugwort and the water extraction component of prickle are converted to the dry plant weight of the extraction raw material so that the weight ratio of the extraction raw material to dry plant is in the range of 20:80 to 80:20. 20:80 to 80:20
The obtained water extract is blended so as to fall within the range described above to obtain a pest repellent for articles.

When the extract is blended with a paint, a solvent or other materials, the extract may be blended as it is, or, if necessary, dried, concentrated or diluted with a suitable solvent. It may be added afterwards.

Suitable solvents for diluting the above-mentioned extract include, for example, one or more of water and / or a lower alcohol and / or a lower polyol. The term "lower alcohol" as used herein means an alcohol having about 1 to 6 carbon atoms, such as methanol, ethanol, and 1-carbon.
Propanol, 2-propanol, etc., and the lower polyol is a polyol having about 1 to 6 carbon atoms, such as erythritol, ethylene glycol, diethylene glycol, 1,2-propylene glycol, dipropylene glycol, 1,3-butylene. Glycol,
There are 1,2-pentanediol, 1,2-hexanediol, 3-methyl-1,3-butanediol, glycerin, diglycerin and the like. Further, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono A solvent such as butyl ether is also exemplified and is not particularly limited.

Further, when the above-mentioned pest repellent for articles is mixed with an aqueous extract component of one or more plants selected from ginseng, leaves of green pepper and leaves of loquat, even better effects can be obtained.

The water extract of ginseng is a perennial ginseng of Panax ginseng (also called Panax Schin-seng or Panax ginseng) or a plant of a closely related species thereof.
In particular, it is preferable to employ a water-extracted component of the charcoal in the leaves. For example, 1 kg of ginseng leaves are naturally dried, and roasted in an iron pot are immersed in 10 liters of purified water at 52 to 55 ° C. for about 120 hours. Components (components other than water) contained in the naturally extracted water extract can be employed.

The water-extracting component of the leaves of the pepper is the leaves of Zanthoxylum piperitum, a deciduous shrub of the family Rutaceae, or its closely related species.
kg is dried naturally and roasted in an iron pot.
It is a component other than water contained in a water extract which is immersed in 0 liter for about 96 hours and naturally extracted.

The water-extractable component of the loquat leaves is, for example, the leaves of Rosaceae loquat (Eriobotrya japonica) or a closely related species thereof. For example, 1 kg of loquat leaves is naturally dried and roasted in an iron kettle at room temperature. Is a component other than water contained in a water extract which is naturally immersed in 10 liters of purified water for about 240 hours.

The water extract of the ginseng, the pepper and the loquat leaves thus obtained is mixed with a water extract of mugwort and a water extract of prickle in a pest repellent. When a water extract of the leaves of peppers and peppers and loquats is mixed with a pest repellent, the extract may be mixed with the undiluted solution or, if necessary, dried, concentrated or diluted with an appropriate solvent. And then blending.

In the pest repellent of the present invention, other components other than those described above are not particularly limited, but if necessary, at least one component selected from organic acids, salts thereof, lower alcohols, lower glycols and fixing agents. May be added.

The organic acid and its salts can be added to the plant extract-blended composition of the present invention to enhance antibacterial properties and prevent decay of the composition.

The organic acids and salts thereof mentioned here have 1 carbon atom.
An organic acid of 0 or less, for example, citric acid, succinic acid, tartaric acid, sorbic acid, lactic acid, acetic acid, fumaric acid, benzoic acid, propionic acid, malic acid, gluconic acid, etc., but is not particularly limited. The salts include, for example, salts of sodium, potassium, lithium, magnesium, calcium, zinc, iron and the like for metal salts, and monoethylamine, diethylamine, triethylamine, monoethanolamine, diethanolamine, triethanolamine, and the like for amine salts. There are many types other than arginine and the like, and also ammonia and the like.

However, the amine salt or ammonia may have an irritating odor in itself, or change in quality with time to cause discoloration and odor, and furthermore, in consideration of safety to the human body and safety to the environment, If possible, no formulation or a much smaller formulation than the metal salt is desirable.

In some cases, when one or more kinds of lower alcohols and / or lower polyols are blended with the pest repellent, the formation of precipitates may be reduced.

The term "lower alcohol" as used herein means a compound having 1 carbon atom.
And alcohols having 1 to 3 carbon atoms, such as methanol, ethanol, 1-
Examples of the lower polyol include a polyol having about 1 to 6 carbon atoms, such as erythritol, ethylene glycol, and the like.
Diethylene glycol, 1,2-propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol, 3-methyl-1,3-butanediol, glycerin, diglycerin And solvents such as ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether.

Fixing agents include cellulose, nitrocellulose, alkylcellulose, alginic acid, starch, PV
There are many types other than A (polyvinyl alcohol) and the like, but there is no particular limitation. By using such a fixing agent, the pest repellent action and other action effects may be able to be sustained for a longer time.

As a guideline for preparing the pest repellent of the present invention, a formulation example in which the pest repellent active ingredient is added to the pest repellent is shown below.

First, an aqueous extract of mugwort (40 to 60% by weight), an aqueous extract of Dokudami (20 to 35% by weight), an aqueous extract of carbonized part of ginseng leaf (3 to 5% by weight), and Japanese pepper Water extract of charcoal of the leaves (3 to 5% by weight) and water extract of loquat leaves (6 to 10% by weight)
It is blended to be 00% by weight. Next, 50% by weight of ethanol is blended with 50% by weight of the mixed water extract to give 100% by weight. In this case, the mixed water extract is
It is preferable to carry out after cooling to about 0 ° C.

For example, a mixture of the pest repellent active ingredient prepared as described above is mixed with various compositions to provide a pest repellent for articles.

In general, pests such as house inhabitants and factories such as houses and factories, as well as pests such as walking invaders and flying invaders, are repelled, and pests that pierce people or have a bad hygienic effect on the interior are surely repelled. Living indoors, leisure,
In addition to making work comfortable, it also helps prevent diseases caused by pests such as skin diseases, asthma and infectious diseases of humans and animals, and controls the quality of products and machinery in factories caused by dead insects and manure. It can be expected to improve.

The present invention can be provided as a pest repellent spray, a pest repellent coating, a pest repellent, a pest repellent and the like. For example, pests such as dwellings, factories, offices, laboratories, floors, tatami, carpets, windows, windowpanes, shutters, walls, curtains, air conditioners, toilets, bathrooms, cars, and leather goods for shoes and bags Repellent spray, pest repellent coating,
In addition to pest repellent spraying agents, pest repellent treating agents, etc., indoor pest repellent brighteners, pest repellent wipers, and pest repellent cleaning agents can be used. For example, pest repellent floor brighteners, floor cleaners, floor wipers, tatami cleaners,
Tatami wiping agent, tatami surface treatment agent, carpet deodorant spray agent, window glass cleaning agent, window glass wiping agent, wall cleaning agent,
It can be a wall cleaning agent, an air conditioner cleaning agent, an air conditioner filter cleaning agent, a toilet room cleaning agent, a toilet room cleaning agent, a bathroom cleaning agent, a bathroom cleaning agent, and the like. Examples are described below, but the present invention is not limited to these examples.

[0034]

EXAMPLES AND COMPARATIVE EXAMPLES [Example 1: Pest repellent spray] First, a mixed solution of pest repellent active ingredients was prepared. According to the composition shown in Table 1, a water extract of mugwort, a water extract of prickle, a water extract of charcoal of ginseng leaves, a water extract of charcoal of leaves of pepper and a water extract of loquat leaves are mixed uniformly. After cooling to about 10 ° C., ethanol was added thereto to prepare a mixed solution of the pest repellent active ingredient.

In the mixed solution prepared here, the water extract component of mugwort and the water extract component of dokudami were 65:35 in terms of dry plant equivalent weight of the raw material for extraction, and mugwort and dokudami were based on the dry plant weight of the raw material for extract. Converted to 5% by weight.

[0036]

[Table 1]

[0037]

[Table 2]

A pest repellent spray having the composition shown in Table 2 was prepared using a mixed solution of the pest repellent active ingredients shown in Table 1. The preparation method can be prepared by collective mixing of each raw material. The pest repellent spray prepared here was composed of a water extract component of mugwort and a water extract component of Dokudami in a weight ratio of the extracted raw material to dry plant equivalent of 6%.
It is 5:35, and mugwort and dokudami are 2% by weight in terms of the dry plant weight of the extraction raw material.

Comparative Example 1 Control of Spray Agent The ethanol used in Example 1 was used as a control.

<Cockroach Repellent Test> The pest repellent spray and the control of Example 1 were sprayed almost uniformly onto filter paper and moistened, and the dried filter paper was subjected to a cockroach repellent test. The test method is 50cm ×
The center of a box-shaped test container 40 cm wide x 10 cm high is 2
A 5 cm × 10 cm separating plate was used to partition the plate, and cockroach breeding feed moistened with moisture was placed on each filter paper in the left and right test plots defined by the partition. In addition, the whole upper part of the container was covered with a transparent plate to prevent escape of the test insects. Twenty black cockroaches were released, and after 60 minutes, the results shown in Table 3 were obtained. From the results, it was considered that the cockroaches repelled the filter paper sprayed with Example 1.

[0041]

[Table 3]

<Tick repellent test> The pest repellent spray and the control of Example 1 were sprayed on filter paper to wet them almost uniformly, and after drying, each filter paper was subjected to a mite repellent test. As a test pest, Dermatophagoides farinae was used.
The feed was placed at the center of the 3 cm square filter paper of Comparative Example 1, and 30 test insects were released from the center of each filter paper.
Three days later, of the test plots, the number of mites in only the filter paper plot was measured irrespective of the life and death of the mites. The results are shown in Table 4. The mites certainly repelled the filter paper of Example 1.

[0043]

[Table 4]

[Example 2: Pest repellent spray for floor] (The component amounts shown below are% by weight.) Components in Table 1 (mixed solution) 20.0 Ethanol 50.0 Polyoxyethylene (50E) .O.) Castor oil 0.3 Purified water Remaining Example 2 is a formulation example of a pest repellent spray for floor use, but it is sufficient to spray the pest repellent on the part where repellent is desired.
Tatami, walls, windows, window glass, shutters, carpets, curtains,
It can be widely used in air conditioners, bathrooms, cars, bags, shoes, etc.

[Example 3; pest repellent spray for carpet] (Amounts of components shown below are% by weight.) Components in Table 1 (mixed solution) 10.0 Benzoic acid 0.5 Calcium carbonate 40. 0 Magnesium carbonate 40.0 Talc Remaining Example 3 is a prescription example of a carpet pest repellent spraying agent. Spray is applied to a part where the pest is to be repelled, and if necessary, dust the powder with a vacuum cleaner after spraying. It is a pest repellent spray that can be inhaled and can be widely used in tatami mats, bathrooms, cars and the like.

[Example 4; Pest repellent coating agent for tatami mats] (The component amounts shown below are% by weight.) Components in Table 1 (mixed solution) 20.0 Benzoic acid 0.5 Polyoxyethylene ( 20EO) Cetyl ether 1.0 Ethylene glycol monoethyl ether 5.0 Water remaining amount Example 4 is a formulation example of a pest-repellent application agent for tatami mats.
It is used by applying an appropriate amount to a cloth or the like and has a cleaning effect, and can be widely used for floors, walls, windows, windowpanes, shutters, bathrooms, cars, tatami mats, bathrooms, car interiors, and the like.

Example 5 Pest Repellent Floor Brightener (The component amounts shown below are% by weight.) Components in Table 1 (mixed solution) 20.0 Polyoxyethylene-modified silicone 3.0 Polyoxy Ethylene polypropylene modified silicone 3.0 Polyoxyethylene (20EO) cetyl ether 3.0 Silicone wax 3.0 Volatile silicone 20.0 Ethylene glycol monoethyl ether 10.0 Propylene glycol 10.0 Water remaining amount Example 5 is a silicone-based high-grade floor wax, which can be widely used for polishing leather and plastic products, and has a polishing effect in addition to an insect repellent effect.

Example 6 Pest Repellent Tatami Wiping Agent (The component amounts shown below are% by weight.) Components in Table 1 (mixed solution) 20.0 Benzoic acid 0.5 polyoxyethylene (20E. O.) Cetyl ether 2.0 Ethylene glycol monoethyl ether 20.0 Water Remaining Example 6 is a formulation example of a tatami soil wipe.
It can be widely used in floors, walls, windows, windowpanes, shutters, bathrooms, cars, tatami mats, bathrooms, cars, etc., and has a cleaning effect in addition to a pest repellent effect.

Example 7 Pest Repellent Carpet Cleaner (The component amounts shown below are% by weight.) Components in Table 1 (mixed solution) 20.0 Benzoic acid 0.5 polyoxyethylene (20E) .O.) Cetyl ether 2.0 Sodium lauryl sulfate 5.0 Citric acid 0.2 EDTA-4Na 1.0 Water Remaining Example 7 is a formulation example of a carpet cleaning agent,
It can be widely used for walls, windows, windowpanes, shutters, air conditioners, bathrooms, cars, tatami mats, bathrooms, etc., and has a pest repelling effect in addition to a cleaning effect on textiles such as carpets.

[Example 8; Pest repellent treating agent] (Amounts of components shown below are% by weight.) Water extract of mugwort 29.5 Water extract of dokudami 16.5 Water of charcoal of ginseng leaf Extract 2.2 Water extract of charcoal of Japanese pepper leaf 2.2 Water extract of loquat leaf 4.7 Sodium citrate 0.6 DL sodium malate 1.4 Sodium fumarate 0.8 Sodium lactate 1.2 Corn starch 0.3 PVA 0.2 Ethanol 40.4 Example 8 is a formulation example of a pest repellent treatment agent. For example, when paper, cloth, tatami, etc. are immersed in the pest repellent treatment and dried at room temperature or heat, the pest repellent is removed. It becomes paper, cloth, tatami, etc. that have a repellent effect.

[0051]

As described above, according to the present invention, a water-extracting component of mugwort and a water-extracting component of prickle are used as active ingredients, and a pest repellent for articles containing a predetermined amount is used. It gives repellent action to cockroaches, mites, and other pests such as arthropods that cause discomfort such as discomfort or disgust, etc. There is an advantage that it is a pest repellent for articles without any.

[0052] In addition, those obtained by adding a predetermined amount of one or more plant water extract components selected from ginseng, green pepper leaves, and loquat leaves provide a more reliable pest repellent effect.

Therefore, the pest repellent for articles of the present invention repels insects that inhabit indoors such as houses and factory houses and factories, as well as walking invading insects and flying invading indoors, and stabs humans and sanitizes indoors. In addition to making indoor living, leisure and work comfortable, it also helps to repel pests that have a negative effect on humans and animals, as well as skin diseases, asthma,
The present invention can prevent diseases caused by pests such as infectious diseases and improve quality control of products and machines in factories caused by dead insects and manure.

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yuji Shibayama 3-13-8 Higashinakamoto, Higashinaka-ku, Osaka-shi F-term in Toyo Beauty Co., Ltd. 4H011 AC06 BA01 BA06 BB22 BC03 BC06 BC07 BC18 BC19 BC20 BC22 DA07 DA13 DA15 DA19 DF06 DH02 DH03 DH07 DH10 DH13

Claims (3)

[Claims] 1. An insect pest for an article comprising a water extract component of mugwort and a water extract component of Pterodactyla in an amount of 20:80 to 80:20 in terms of dry plant equivalent of an extraction raw material, and containing this as an active ingredient. Repellent. 2. The method according to claim 1, wherein the active ingredient comprising the water extract of mugwort and the water extract of prickle is 0.01 to 20% by weight of the total amount of the external preparation for skin in terms of the dry plant weight of the raw material for extraction. The pest repellent for articles as described in the above. 3. A pest repellent for an article obtained by adding a water extract component of one or more plants selected from ginseng, ginseng leaves and loquat leaves to the pest repellent skin external preparation according to claim 1 or 2. Agent.