JP3306054B1 - Wood preservative - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide timber preservative having environmental-friendly and excellent moth proof, rotproof, mildewproof and termite preventive effectiveness. SOLUTION: The timber preservative comprises a plant belonging to (1) sheath (Piper methysticum) species, (2) Hopea species, (3) onion (Allium cepa) species, (4) plantain (Phellodendron amurenze) species or (5) Pterocarpus indicus species or its treated matter as an effective component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wood preservative,
In more detail, wood pests such as termites and leaf bark beetles that erode buildings and furniture made of wood, as well as rots caused by wood rot fungi such as brown rot fungus, Pteridophyta, and white rot fungus, Aspergillus.
The present invention relates to a wood preservative effective against contamination by wood contaminants such as niger and aureobasidium pullulans, and a method for producing and preserving the same.

[0002]

2. Description of the Related Art In order to control wood pests such as termites and bark beetles, and to prevent decay caused by wood rot fungi such as Pleurotus osmanthus and Id mushroom, and contamination by wood contaminants such as Aspergillus niger and Aureobasidium pullulans. Various wood preservatives are known. Its active ingredients include insect repellent action, wood preservative action, bactericidal action,
Various compounds having an antifungal effect and the like are known. However, these conventionally known wood preservatives have a high impact on human and animal safety and the environment, and may destroy natural ecosystems.

[0003]

The wood preservative according to the present invention has a high insect repellent effect against insect pests, a high antiseptic property against wood rot fungi, and a fungicide generated on wood. Another object of the present invention is to provide a wood preservative having high antifungal property. Another object of the present invention is to provide a wood preservative which is highly safe for humans and animals and has no adverse effect on the environment. Still another object of the present invention is to provide a wood preservative that can reliably and efficiently control wood pests, wood rot fungi, and wood contaminants.

[0004]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object and to obtain a wood preservative having an excellent effect and durability. Or a processed product thereof, a plant or a processed product thereof belonging to the genus Hopea, a plant or a processed product thereof belonging to an onion (Allium cepa) species, a leaf or a processed product of a plant belonging to a psyllium (Phellodendron amurenze) species, or Pterocarpus i
It has been found that exudates of plants belonging to the species ndicus or treated products thereof have excellent preservative, antifungal and insect repellent effects on wood, and the present invention has been completed.

[0005] That is, the present invention relates to (1) the use of Kawa species (Piper methysticum) as an active ingredient.
Plants belonging to or processed products thereof, plants belonging to the genus Hopea
Or its processed products, belonging to the onion (Allium cepa) species
Plants or their processed products, psyllium (Phellodendron amuren)
ze) Leaves of plants belonging to the species or processed products thereof, or Pt
of plants belonging to the species erocarpus indicus
Characterized by containing exudates or processed productswood
Insect repellent or termite-proofWood preservatives,(2) Kawa species (Piper methysticum) as the active ingredient
Characterized by containing a plant belonging to
Wood preservatives for preserving wood (3) Kawa species (Piper methysticum) as active ingredient
Characterized by containing a plant belonging to
Wood preservative for fungicidal protection of wood  (4) Contains plants belonging to the Kawa species or processed products thereof
Wood preservative characterized by the following:, (5) The plants belonging to the Kawa species or their processed products are
The above-mentioned (1) to (1) to (4)Stated
Wood preservatives, (6) A plant belonging to the genus Hopea is Hopea p.
arviflora, Hopea odorata or
The above (1), which is a Hopea microrantha species
Wood preservative, (7) The processed material is dry crushing of Kawa stalks (ground stalks) or roots
Or an extract4)Wood preservatives as described, (8) Kawa (Piper methysticum) species as active ingredient
Or a treated product thereof, a plant belonging to the genus Hopea
Material or its processed material, belonging to the onion (Allium cepa) species
Plants or their processed products, psyllium (Phellodendron amur)
enze) Leaves of plants belonging to species or processed products thereof, or P
plants belonging to the species terocarpus indicus
Wood characterized by using exudates or treated products thereof
LumberInsect-proof or termite-proof methods,(9) Kawa species (Piper methysticum) as active ingredient
Characterized by using plants belonging to
Wood preservative method, (10) Kawa species (Piper methysticu
m) Use of plants or their processed products
Antifungal method for wood, (11) Plants belonging to the Kawa species or their active ingredients
A method for preserving wood, characterized by using a processed material, To
Related.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention provides the above-mentioned wood preservative. The terms "preservative" and "antibacterial" for fungi are used to mean not only sterilization but also growth inhibition of fungi. The term "antifungal" is used to mean killing or inhibiting the growth of mold. The term "control" for pests is used to include insecticide or repellent. As described below, the wood preservative of the present invention contains components derived from the specific plant, so that it is highly safe, does not destroy natural ecosystems, and has insect repellent, antiseptic and It has the characteristic of high antifungal property.

[0007] Plants belonging to the River (Piper methysticum) species grow from New Guinea to the Polynesian Islands. The rhizome has been used as a favorite of local people. The above-ground part is discarded without being used. H
Plants belonging to the genus Opae include, for example, Hopae p.
arviflora, Hopae odorata or Hopae microrantha. These plants grow in Malaya and Sumatra, and their resins are used as raw materials for varnishes. The bark is discarded without being used. Onion (Allium cepa)
Among the plants belonging to the species, the outer skin is discarded without being used. Greater tapir (Phellodendron amurenz)
e) The bark of the plant belonging to the species has been used as a crude drug (oak), but its leaves are discarded without being used. Pterocarpus indic
The plant belonging to the us species is used as a high-grade material for furniture and the like, but no exudate is used.

In the present invention, a treated product (eg, extract, exudate) of at least one plant selected from the aforementioned plants
Can be used. Processed products are those obtained by treating these plants, for example, dry cutting, extraction, exudate collection, crushing, etc.
Artificial means added to these plants can be used in the present invention. Further, the active ingredient raw material of the present invention may be subjected to a treatment such as extraction. Furthermore, in the case of plant extraction, not only the extract but also the extraction residue can be used as the processed material as the raw material of the present invention.

[0009] In the present specification, "exudate" refers to
It means not only exudates collected from plant trunks and the like but also substances exuding from these plants widely. The extract can be obtained by a conventional method. For example, the plant
After performing processing such as cutting, drying, and crushing as necessary,
Using an appropriate extraction solvent, the extract was extracted at room temperature or under normal pressure or under pressure (pressurized by an autoclave or a pressure cooker), filtered if necessary, and concentrated. Obtainable. Plants can be used alone or in combination for extraction.

As the extraction solvent, for example, water; methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, sec-butanol, t-butanol, n-octanol, 2-butyl-octanol, Not only monohydric alcohols such as lauryl alcohol and cyclohexanol but also alcohols such as di- or polyhydric alcohols such as ethylene glycol, propylene glycol and glycerin; ethyl ether, propyl ether, isopropyl ether, dimethoxyethane, cyclic ethers (eg dioxane Ethers such as mono- or dialkylene glycol monoalkyl ethers (eg, ethylene glycol monomethyl ether); acetone, methyl ethyl ketone Ketones such as methyl isobutyl ketone and cyclohexanone; esters such as ethyl acetate, butyl acetate and n-butyl laurate; halogen hydrocarbons such as carbon tetrachloride, chloroform, dichloromethane and 1,2-dichloroethane; hexane, octane and the like Alicyclic hydrocarbons such as cyclohexane and cycloheptane; aromatic hydrocarbons such as benzene, toluene and xylene; nitriles such as acetonitrile; carboxylic acids such as formic acid, acetic acid and oleic acid; Examples include aprotic polar solvents such as N, N-dimethylformamide, dimethylsulfoxide, pyridine, etc. These solvents can be used alone or in combination of two or more.

In the extraction of river stalks, for example, acetone or methanol is preferable as the extraction solvent. Ho
As a solvent for extracting the genus pea, for example, acetone is preferable. As an onion extraction solvent, for example, methanol is preferable. As a solvent for extracting oat leaves, for example, methanol is preferable. Pterocar
As a solvent for extracting exudates of plants belonging to the species pus indicus, for example, acetone or methanol is preferable.

The amount of the above-mentioned extraction solvent may be within a range that does not impair the extraction efficiency and the extraction operation, and is, for example, 50 to 10,000 parts by weight, preferably 100 to 2,000 parts by weight, per 100 parts by weight of the extract. It is about. The extraction temperature is, for example, about 0 to 150 ° C, preferably about 10 to 120 ° C.

The exudate in the present invention can also be obtained by a conventional method. For example, Hope genus Hope
A part of the bark of a parviflora is damaged, exudate such as resin is collected, or a plant or a part thereof is
The exudate can be obtained by subjecting it to hot water treatment or the like, if necessary, and then squeezing and collecting. In the present invention, not only exudates separated from plants as described above, but also exudates exuded from plants or a part thereof can be used. For example, exudate may exude from a plant that has been subjected to processing such as crushing and drying. Such exudates are also included in the “exudates” of the present invention, and can be used as the active ingredient material of the present invention. As the active ingredient raw material of the present invention, an extract obtained by extracting the above exudate with a solvent is preferable.

In the present invention, two or more kinds of plants and their extracts may be mixed with each other, or exudates may be mixed, or two or more kinds selected from a treated product, an extract and an exudate may be combined. May be mixed. The extract and exudate may be liquid, solid such as powder or granule, or semi-solid such as paste. The treated product, extract, and exudate contain components exhibiting high insect repellent, antiseptic, and antifungal activities against wood pests, wood rot fungi, and wood contaminants. Moreover, the wood insect repellent, antiseptic and antifungal components are natural products and generally have high safety for humans and animals, and have little adverse effect on the environment.

[0015] The formulation of the wood preservative of the present invention is not particularly limited as long as it contains the above-mentioned active ingredient material.
The processed product of the plant and its extract or exudate itself may be used. The wood preservative may be formulated. Examples of the formulation include liquids such as solutions, wettable powders, suspensions, dispersants, emulsions, oils, and lotions; solids such as powders, granules, microcapsules, microspheres, flowables, and foaming agents. Agent; paste,
Semi-solid preparations such as creams; spray preparations, aerosol preparations, paints, and the like can be mentioned, and these can be appropriately selected depending on the purpose of use and application site. These preparations can be manufactured by a conventional method.

The liquid diluent or carrier can be produced, for example, by diluting the extract or exudate with a suitable liquid diluent or carrier. In the case of a wettable powder, a solid diluent or a carrier may be further used.

The liquid diluent or carrier includes, for example, ethylene glycol,
Alcohols such as propylene glycol and glycerin; plasticizers (eg, ester plasticizers such as di-2-ethylhexyl adipate); petroleum solvents such as kerosene; aromatic hydrocarbons such as ethylnaphthalene and phenylxylylethane; Phosphate esters such as 2-ethylhexylphenyl phosphate can also be used. These liquid diluents and carriers can be used alone or in combination of two or more. As the solid diluent or carrier, for example,
Diatomaceous earth, mica, clay, kaolin, talc, quartz powder, bentonite and the like can be mentioned. These solid diluents or carriers can also be used alone or as a mixture of two or more.

The solid preparation can be produced, for example, by diluting or granulating the extract or exudate with a suitable solid diluent or carrier. As a solid diluent or carrier,
In addition to the above-mentioned solid diluents, talc such as talc powder and wax powder, clays such as fine powder clay and mineral powders such as calcium carbonate; sulfur powder; urea powder; wood powder, activated carbon, starch and other plants Powder; various carriers commonly used in agricultural chemicals, horticultural preparations and the like. These solid diluents and carriers are often used as extenders. Solid diluents and carriers can be used alone or in combination of two or more.

The aerosol can be produced, for example, by diluting the extract or exudate with an appropriate solvent as necessary and filling the mixture with a propellant in a cheerful manner. Examples of the solvent include the above-mentioned solvents and the like. Examples of the propellant include alcohol (for example, propanol) and liquefied natural gas.

The wood preservative may be various additives depending on the kind of the preparation, if necessary, for example, an antiseptic / antifungal agent; a stabilizer such as an antioxidant or an ultraviolet absorber; a binder; A resin having an emulsifier, a dispersant, a spreading agent, a wetting agent, a penetrant; a thickener; a flow aid; an anti-caking agent;
It may contain an ultraviolet scattering agent; a water removing agent; a coloring agent and the like.

The antiseptic and antifungal agents include, for example, 3-
Organic iodine compounds such as bromo-2,3-diiodo-2-propenylethyl carbonate, 3-iodo-2-propynylbutylcarbamate, 2,3,3-triiodoallyl alcohol, parachlorophenyl-3-iodopropargyl formal; -(4-thiazolyl) benzimidazole, benzimidazole such as 2-thiocyanomethylthiobenzothiazole, benzimidazole such as 2-thiocyanomethylthiobenzothiazole and benzothiazole compounds; 1- (2- (2 ', 4'-)
Dichlorophenyl) -1,3-dioxolan-2-ylmethyl) -1H-1,2,4-triazole, 1- (2
-(2 ', 4'-dichlorophenyl) -propyl-1,
3-dioxolan-2-ylmethyl) -1H-1,2,2
4-triazole, α- (2- (4-chlorophenyl)
Ethyl) -α- (1,1-dimethylethyl) -1H-
Triazole compounds such as 1,2,4-triazole-1-ethanol; organic zinc such as zinc-bis- (2-pyridine-thiol-1-oxide) zinc phthalate; 4-isopropyltropolone (hinokitiol);
Benzoic acid, sodium benzoate, p-hydroxybenzoic acid
And benzoic acids such as -butyl and natural compounds such as borax.

As the antioxidant, for example, 4,4'-
Thiobis-6-tert-butyl-3-methylphenol, butylated hydroxyanisole (a mixture of 2-tert-butyl-4-methoxyphenol and 3-tert-butyl-4-methoxyphenol), p-octylfenol, mono (Or di or tri)-(α-methylbenzyl) phenol, 2,6-di-t-butyl-p-cresol (BH
T), pentaerythrityltetrakis [3- (3,5-
Phenolic antioxidants such as di-t-butyl-4-hydroxyphenyl)] propionate; N, N'-di-
Amine antioxidants such as 2-naphthyl-p-phenylenediamine; hydroquinoline antioxidants such as 2,5-di (t-amyl) hydroquinoline; sulfur antioxidants such as dilaurylthiodiuropionate Agents; phosphorus-based antioxidants such as triphenyl phosphite;

As the ultraviolet absorber, for example, 2-
Benzotriazole-based compounds such as (2'-hydroxy-5'methylphenyl) benzotriazole and 2- (2'-hydroxy-4'-n-octoxyphenyl) benzotriazole; 2-hydroxy-4-methoxybenzophenone, Benzophenone compounds such as hydroxy-4-n-octoxybenzophenone; salicylic acid compounds such as phenyl salicylate and pt-butylphenyl salicylate; 2-ethylhexyl 2-cyano-
3,3-diphenyl acrylate, 2-ethoxy-2 '
-Bisanilide ethyl oxalate, dimethyl succinate-1
-(2-hydroxyethyl) -4-hydroxy-2,
2,6,6-tetramethylpiperidine polycondensate and the like.

Examples of the resin having a film forming ability include polyolefins such as polyethylene and polypropylene, polyvinyl acetate, polyvinyl alcohol, acrylic resin, polyvinyl chloride, styrene resin, fluorine resin, and the like.
Examples thereof include thermoplastic resins such as chlorinated polyolefins, alkyd resins, polyamides, and polyesters; and thermosetting resins such as phenol resins, urea resins, melamine resins, furan resins, unsaturated polyester resins, and epoxy resins.

As the emulsifier, dispersant, spreading agent, wetting agent and penetrant, conventional surfactants such as anionic surfactants and nonionic surfactants can be used. Examples of the anionic surfactant include metal soaps, sulfate salts such as alkyl sodium sulfate, alkylbenzene sulfonates such as sodium alkylbenzene sulfonate,
Alkyl naphthalene sulfonic acid such as sodium alkyl naphthalene sulfonate [for example, trade name Newcargen BX-C manufactured by Takemoto Yushi Co., Ltd.], dialkyl sodium 2-sulfosuccinate [for example, Daiichi Kogyo Seiyaku Co., Ltd.
Diol salts such as 2-sulfosuccinic acid and polycarboxylic acid type surfactants [for example, Toxanone GR-3, manufactured by Sanyo Chemical Industries, Ltd.]
0], α-olefin sulfonate, polyoxyethylene distyrenated phenyl ether sulfate ammonium salt [for example, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., trade name: Dixsol 60A], sodium lignin sulfonate, potassium lignin sulfonate, etc. Can be exemplified. Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether [for example, Daikin Kogyo Seiyaku Co., Ltd., trade name Inogen EA-142 (EA-142)] polyoxyethylene aryl Ether, fatty acid polyvalent alcohol ester, fatty acid polyhydric alcohol ester, fatty acid polyhydric alcohol polyoxyethylene, sucrose fatty acid ester, block copolymer of ethylene oxide and propylene oxide [for example, manufactured by Sanyo Chemical Co., Ltd. Mei New Pole PE-6
4].

Examples of the thickener include polyvinyl alcohol, xanthan gum, duran gum, polyacrylic acid and salts thereof, and as a flow aid, a PAP auxiliary (for example, isopropyl phosphate), wax, polyethylene, fatty acid Examples thereof include organic lubricants such as metal salts, paraffin and silicone oil, and inorganic lubricants such as talc. As an anti-caking agent, for example, white carbon, diatomaceous earth,
Examples include magnesium stearate, aluminum oxide, and titanium dioxide. Examples of the coagulant include liquid paraffin ethylene glycol, diethylene glycol, triethylene glycol, and isobutylene polymer [for example, IP Solvent-2835 manufactured by Idemitsu Petrochemical Co., Ltd.]. As an ultraviolet scattering agent,
Titanium dioxide and the like can be exemplified. As a water remover,
Drying agents such as anhydrous gypsum and silica gel powder are exemplified.
Colorants include, for example, organic or inorganic pigments and dyes.

The wood preservative of the present invention may contain other insect repellents, pest repellents, and potency enhancers. Examples of the other insect repellents include organic phosphorus compounds such as phoxime, chlorpyrifos, fenitrothion, pyridafenthion, and isofenphos; carbamate compounds such as bassa and propoxer; cyfluthrin, permethrin, tralomethrin, fenparerate, etofenprox, and silafluofen. Pyrethroid compounds such as imidacloprid, nitenpyram, acetamiprid, neonicotinoid compounds such as clothianidin, phenylpyrazole compounds such as fipronil, nereistoxin compounds such as bensultap, chlorophenapir, hiba oil, hiba neutral oil, Fatty acids such as decanoic acid and octanoic acid (Japanese Patent No. 2925081), octanol, lauryl alcohol, decanol, isodecanol, cap In addition to methyl phosphate, methyl caprylate (Japanese Patent No. 2919280), boric acid and the like, neem (Japanese Patent Application Laid-Open No. 3-41011), plants including the genus Moringa and Malah (Japanese Patent Application Laid-Open No. 6-329514). ). It may also contain a chitin synthesis inhibitor such as lufenuron, hexaflumuron, diflubenzuron, or flufenoxuron, which is known as an insect growth regulator (IGR), or a juvenile hormone-like compound such as methoprene or hydroprene.

The content of the above-mentioned active ingredient raw material, that is, the processed product of a plant or a crude drug (eg, an extract or exudate of the plant) can be appropriately selected according to the dosage form of the wood preservative and the method of application. In the case of liquids, semi-solids or solids, the concentration of the components is, for example, 0.1 to 100% by weight, preferably as an extract or exudate of the plant or herbal medicine in a wood preservative,
It is about 0.5 to 50% by weight. When the wood preservative is an aerosol, the concentration of the component in the filling filled in the container is, for example, 0.01 to 25% by weight, preferably 0.05%, as an extract or exudate of the plant. ~ 15
%.

The wood preservative of the present invention can be applied to wood pests, wood rot fungi and wood contaminants, especially termites. The following are examples of wood pests that are the object of the wood preservative according to the present invention. For example, insects belonging to the order of the termites, the order of the order Coleoptera and the order of the wasps are mentioned. Specific examples of the insects belonging to the termites include, for example, those belonging to the family Termite, such as Yamato termite and house termite, and those belonging to the Levitermite, such as the termite termite and the termite termite of the United States. Specific examples of the insects belonging to the order Coleoptera include fly bark beetle, oak fly bark beetle, zelkova fly bark beetle, those belonging to the leaf fly beetle family such as Alage fly bark beetle, kebukabashibanmushi, pine beetle,
A member of the family Scarabaeidae, such as a member of the family Scarabaeidae such as Kushihigeshibanushi, Kuronokogeshibanushi, Chibikinokoshibanmushi, etc. And those belonging to the weevil family such as weevil, etc., and those belonging to the bark beetle family such as the bark beetle. In addition, those belonging to the caterpillar family and the weevil family are also included. Specific examples of the insects belonging to the order of the wasps include, for example, those belonging to the family Anesidae, such as a wasp, and those belonging to the ant family such as a red-tailed ant. Examples of the wood rot fungi that are the objects of the wood preservative according to the present invention include various fungi, for example, brown rot fungi (for example, Streptomyces mushroom, Idake mushroom, Kikaigaratake mushroom, Chilimentake mushroom, Namidatake mushroom), and white rot fungi (eg, Mio-waratake mushroom) Can be When the wood preservative of the present invention is used for controlling insect pests, especially house pests such as termites, and for wood rot fungi, especially P. japonicus and wood contaminating bacteria, it can be controlled with high efficiency in a small amount. Note that such effects can be similarly obtained by using the plant itself containing the extract or exudate.

In the method for preserving wood according to the present invention, the source or source of pests or wood rot fungi, for example, kitchens, bathrooms, living rooms, corners of floors, under floors, ceilings, bases, columns, walls, soil, etc. What is necessary is just to apply the said wood pest control agent. The method of applying the wood preservative includes various modes depending on the source and source of the pests, wood rot fungi, and wood contaminants, such as coating, spraying, dipping, pouring, admixing, and spraying. . If these can protect the wood, the processing method is not particularly limited.For example, besides directly processing the wood, for the purpose of basal heat treatment or bait treatment inside and outside the house,
A method such as embedding in the soil may be performed. Further, it may be applied to plywood, laminated wood, wood board, etc. by being mixed with an adhesive. When applied to soil, the preservative can be applied by spraying on the soil surface, spraying on grooves formed in the soil, mixing with the soil, and the like. In addition, the wood preservative is adjusted to a sheet material by holding it by coating, impregnating, kneading, etc. on a sheet-like base material such as a synthetic resin sheet, paper, cloth, etc., and adjusting the sheet material to a location where the pest invades or occurs. It can also be made to work effectively by placing or attaching.

[0031]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

Example 1 100 g of river stem was extracted with 800 ml of acetone at 60 ° C. under reflux. The extract was concentrated to dryness under reduced pressure to obtain an extract. This extract is dissolved in methanol and 10% (weight)
To give a methanol solution of the extract.

Example 2 100 g of a river stem was extracted with 800 ml of methanol at 60 ° C. under reflux. The extract was concentrated to dryness under reduced pressure to obtain an extract. This extract was dissolved in methanol to obtain a 10% (by weight) extract methanol solution.

Test Example 1: Antifungal test A piece of wood (beech, cross section 20 × 3 m) was placed in the methanol extract solution of Example 1 or the methanol extract solution of Example 2.
m, length 50 mm, 6 sheets) for 3 minutes and air-dried. Petri dish with a diameter of 90 mm (height of 20 mm)
After a 2% agar medium was poured into the mixture and solidified, the agar was placed on a net so that the agar did not directly contact the wood pieces. From above, Aspergillus niger, Penicillium funiculosu
m), Aureobasidi pullulans (Aureobasidi)
um pullulans), Gliocladium bilens (Glio
2 ml of a spore mixture of C. cladiumvirens was sprayed, and the condition was observed. Table 1 shows the results obtained by observing the condition after 4 weeks using the antifungal preservative prepared as described above. The evaluation values are as shown in Table 2.

[0035]

[Table 1]

[0036]

[Table 2]

Test Example 2: Preservative test Cedar test piece (20 × 40
× 5 mm, double-sided) into the extract methanol solution obtained in Example 1 or the extract methanol solution obtained in Example 2
It was applied at a rate of 00 mg. This was dried at 60 ° C. for 2 days, and the weight before the test was measured. After sterilizing with ethylene oxide gas, the test piece was placed on a petri dish inoculated with Streptomyces mushroom or Kawatake mushroom on the medium. After being left for 12 weeks, it was taken out and dried at 60 ° C. for 2 days, and then the weight was measured to determine the weight loss rate (%). Table 3 shows the results.

[0038]

[Table 3]

Test Example 3: Termite control test (1) Contact test 100 g of each sample shown in Table 4 was extracted by boiling and refluxing 800 ml of each of the extraction solvents shown in Table 4. The extract was concentrated to dryness under reduced pressure to obtain an extract. The extract was dissolved in the extraction solution to obtain a 20% (by weight) extract solution. This is added to 10 g of silica sand and stirred.
(Weight) supported, then water was added to make the water 10%
(Weight). In a petri dish, 10 house termite ants were released and observed. Table 4 shows the results of the contact test performed by the above method.

[0040]

[Table 4]

(2) Eating Inhibition Test In the same manner as in Test Example 3, the samples shown in Table 5 were extracted with the extraction solvents shown in Table 5 corresponding to the samples to obtain sample extracts. Dissolve this sample extract in the extraction solvent and add 10%
(Weight) solution, and a 1 cm × 1 cm No.
2 Impregnated with filter paper (manufactured by Advantech Co., Ltd.), immediately taken out and dried at room temperature. This filter paper sample was placed in a house termite termite (100 animals per sample), and the state of feeding inhibition was observed. Table 5 shows the results of one week after the feeding inhibition test performed by the above method.

[0042]

[Table 5]

(3) Penetration test As shown in FIG. 1, the lower part of the connecting portion of the connected prism having a length of 50 cm, a width of 50 cm and a height of 50 cm is about 0.3 cm in height and 4 in width.
Approximately 1 cm of soil was spread over a container having a transfer path of 1 cm. Approximately 1 cm of ground pulverized stalk is spread on one side of the container,
A pine bait 1 cm x 1 cm in length and 2 cm in length was placed on top of it. Then, on the untreated soil side, the termite termite 2
00 were released and observed for 3 weeks to see if they could penetrate the ground pulverized material and reach the bait. [Test result] No pulverized material was found. Two weeks later they all died. In the case of no treatment, it reached the bait tree after 1 day, and was fine after 3 weeks.

[0044]

EFFECT OF THE INVENTION Plants belonging to the species of Kawa (Piper methysticum) or their processed products, plants belonging to the genus Hopea or their processed products, plants belonging to the onion (Allium cepa) species or their processed products, and Phellodendron amurenze species Leaves of the plant to which they belong or their processed products, or Ptero
The wood preservative of the present invention containing an exudate of a plant belonging to the species carpus indicus or a processed product thereof has an excellent insect repellent action, preservative action and fungicide action on wood. The wood preservative of the present invention has high safety for humans and livestock because the active ingredient is derived from natural plants, and has little adverse effect on the environment. ADVANTAGE OF THE INVENTION According to the control method of this invention, pests, rot fungi, and contaminating bacteria can be controlled very efficiently while ensuring safety.

[Brief description of the drawings]

FIG. 1 is a top view and a cross-sectional view of a penetration test container.

[Explanation of symbols]

 1 .... Pine tree 2 .... Pulverized river stem

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B27K 3/34 A01N 65/00

Claims (11)

(57) [Claims] Claims: 1. An active ingredient comprising a Kawa seed (Piper methyst)
icum) or a processed product thereof, a plant belonging to the genus Hopea or a processed product thereof, a plant belonging to an onion (Alliumcepa) species or a processed product thereof, psyllium (Phellodendron)
amurenze) A wood preservative for insects or termites , comprising a plant leaf belonging to the species or a treated product thereof, or an exudate of a plant belonging to the species Pterocarpus indicus or a treated product thereof. 2. The method according to claim 1, wherein the active ingredient is Kawa seed (Piper methysti).
cum) or containing a processed product thereof.
Wood preservative for preserving wood. 3. The method of claim 1 wherein the active ingredient is Kawa seed (Piper methysti).
cum) or containing a processed product thereof.
Wood preservative for fungicide of wood. 4. A wood preservative comprising a plant belonging to the Kawa species or a processed product thereof. 5. A plant belonging to the Kawa species or a processed product thereof,
The wood preservative according to any one of claims 1 to 4, which is a stalk, a root, or a processed product thereof. 6. The plant belonging to the genus Hopea is Hope.
a parviflora, Hopea odorat
A wood preservative according to claim 1, which is of the species a or Hopea microrantha. 7. The wood preservative according to claim 4, wherein the treated product is a dried pulverized product or extract of a river stem (ground stem) or a root. 8. The method of claim 1, wherein the active ingredient is Kawa (Piper methysticu).
m) a plant belonging to a species or a processed product thereof, a plant belonging to the genus Hopea or a processed product thereof, a plant belonging to an onion (Alliumcepa) species or a processed product thereof, and a psyllium (Phellodendron)
amurenze) A method for controlling insects or termites on wood, comprising using leaves of plants belonging to the species or treated products thereof, or exudates of plants belonging to the species Pterocarpus indicus or treated products thereof. 9. An active ingredient comprising a Kawa seed (Piper methysti).
specially use plants belonging to cum) or their processed products.
The preservative method of wood to be a feature. 10. An active ingredient comprising a piper methys (Piper methys)
ticum) Use of the product or its processed material
Characteristic method for fungicide of wood. 11. A plant or plant belonging to the Kawa species as an active ingredient.
Is a method of preserving wood characterized by using the processed material
Law.