JP2006008573A - Wood preservative and wood processing method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wood preservative which uses a highly safe active ingredient, is strongly effective for controlling wood-destroying fungi such as Tyromyces palustris and Coriolus versicolor, is excellent in handleability and workability and offers a high residual rate of the active ingredient. <P>SOLUTION: The wood preservative contains at least one chosen from highly safe squalene and squalane found in a human body or listed in standards for cosmetic ingredients as an effective ingredient. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wood preservative and a method for treating wood using the same. More specifically, the present invention relates to a wood preservative that prevents or suppresses the decay of wood caused by Prunus edulis, Kawaratake, Namidatake, etc., and is excellent in safety, and a method for treating wood using the same.

  Wood is widely used in various fields due to its excellent characteristics such as light weight, high strength, ease of processing, and gentleness to the human body. However, it has some disadvantages that are unavoidable because it is a biological material, that is, flammable, crazy, easily rotted, easily eaten by insects, easily discolored, and easily broken. Preventing these disadvantages, especially decay caused by wood-rotting fungi and insects caused by termites, is essential for extending the service period of wood and improving the reliability of wood products. This makes it possible to make more effective use of wood as a resource and thus contribute greatly to the conservation of the global environment.

  In view of these points, as an agent for controlling wood decay fungi, that is, as a wood preservative, an organic agent such as a phenol compound, an organic halogen compound, an organic tin compound, a naphthenic acid compound and a tar compound, copper Compound, CCA agent which is a mixture of chromium compound and arsenic compound, combined use of copper compound and organic agent, and quaternary ammonium salt, boric acid compound, water-soluble alkanolamine and zinc ion supply compound Some drugs have been proposed.

  Among the above-mentioned wood preservatives, organic chemicals have problems in sustainability and safety, and chemicals containing harmful elements and heavy metals are in danger of conflicting with environmental regulations. Due to the limitations and difficulties, early development of wood preservatives that combine high safety and long-lasting efficacy is desired.

  On the other hand, squalene is a highly safe substance that is not only contained in deep-sea shark liver oil but also in fish oil and vegetable oil, and is also produced in the human body and contained in sebum. (Non-Patent Document 1). Further, squalane stabilized by adding hydrogen to squalene is listed in cosmetic raw material standards, and is generally blended in cosmetics as a solvent, so that the penetration into the skin and the moisturizing effect can be obtained. However, it is not applied as an antiseptic component in cosmetics, and it is not known to have antibacterial activity against wood-rotting fungi.

Author Tomoda, Shoji, “Phytopharmaceutical Chemistry”, Yodogawa Shoten Co., Ltd., February 15, 1988, 3rd edition, 3 edition, p. 166

  The present invention uses a highly safe antiseptic active ingredient to exert a powerful control effect against wood-rotting fungi such as Prunus edulis and Kawaratake, and is excellent in handleability and workability, and the remaining of active ingredients. It is an object to provide a high wood preservative.

  The inventor of the present invention, as a result of earnest research to solve the above-mentioned problems, has at least one selected from squalene and squalane which are included in the human body or are included in the cosmetic raw material standards. However, the present inventors have found the fact that it has a surprisingly significant antiseptic effect on wood, and has completed the present invention.

  Thus, according to the present invention, there is provided a wood preservative containing at least one selected from squalene and squalane as an active ingredient.

In addition, according to the present invention, there is provided a wood treatment method characterized by treating wood with a wood preservative containing at least one selected from squalene and squalane as an active ingredient.

  According to the present invention, it is possible to provide a highly safe wood preservative that exerts a powerful control effect against wood-rotting fungi such as Prunus edulis, Kawaratake and Namidatake.

  As the squalene used in the present invention, a commercially available product can be suitably used regardless of an extract from a natural product or a synthetic product. Further, since a large amount of squalene is contained in shark liver oil such as shark, shark shark, spatula shark, and shark shark, these liver oils can also be used.

  The squalane used in the present invention is a substance obtained by vacuum distillation after adding hydrogen to squalene, and commercially available mainly as a cosmetic raw material can be suitably used.

As the dosage form of the wood preservative of the present invention, there are various types of liquid agents (for example, aqueous solvents, wettable powders (flowable preparations), emulsions, oils), solid molds (for example, powders and granules), aerosols and the like depending on the purpose of use. Although dosage forms are possible, aqueous solvents, emulsions or oils are preferred, and aqueous solvents are particularly preferred. In addition, any of the above preparations can be formulated using a known method.
Below, the formulation method of the wood preservative of this invention is described.

In the case of using an aqueous solvent, a preparation obtained by dissolving an active ingredient in an organic solvent is usually added to a surfactant and water. Moreover, when apply | coating an aqueous solvent to wood, you may add the resin emulsion which has a film formation ability to an aqueous solvent as needed.

Examples of organic solvents that are preferably used when the wood preservative of the present invention is used as an aqueous solvent are shown below.
1) Aliphatic hydrocarbon n-hexane, cyclohexane, heptane, octane, etc. 2) Aromatic hydrocarbon xylene, toluene, ethylbenzene, cumene, etc. 3) Ester ethyl acetate, methyl acetate, n-butyl acetate, amyl acetate, etc. 4) Alcohol isobutanol, sec-butanol, 2-ethyl-1-butanol, isopentanol, 1-heptanol, 1-octanol, neopentyl alcohol, diethylene glycol, diethylene glycol monomethyl ether (MDG), etc. 5) ketone acetone, Methyl ethyl ketone, methyl isobutyl ketone, methyl amyl ketone, cyclohexanone, etc. 6) The above organic solvents such as carbonate ethylene carbonate, butylene carbonate, propylene carbonate, dimethyl carbonate It may be used singly or in combination of two or more.

  As the aqueous solvent, an alcohol solvent and / or a surfactant can be used, but a nonionic surfactant is preferable in terms of stability of the preparation. Examples of nonionic surfactants include sorbitan, alkyl ether, and alkylolamide surfactants.

  Examples of the resin emulsion include a polyvinyl acetate resin emulsion (resin solid fraction 40 to 50%, average molecular weight 2,000 to 100,000), and a polyvinyl acetate / ethylene copolymer resin emulsion (resin solid fraction 40 to 40%). 50%, average molecular weight 2,000-100,000), polyacrylic ester resin emulsion (resin solid fraction 30-40%, viscosity 100-500 cPs, average molecular weight 3,000-50,000).

  The aqueous solvent is usually formulated by adding an active ingredient dissolved in, for example, an alcohol solvent to a surfactant and water. The aqueous solvent preferably contains 1 to 40 parts by weight of the active ingredient and 100 parts by weight of the preparation, with the remainder being an organic solvent, water and a surfactant. These aqueous solvents can be used by diluting with water at a predetermined magnification, for example, 1 to 10 times.

  The wettable powder (flowable preparation) has an active ingredient of 1 to 40 parts by weight, and an emulsifier or thickener (for example, polyacrylic acid or a salt thereof, polyvinyl alcohol) of 10 to 40 parts per 100 parts by weight of the preparation. The amount is preferably about parts by weight.

  In the case of preparing an emulsion, the active ingredient is usually mixed with an emulsifier for emulsification, and an organic solvent and water are added thereto to prepare a formulation. Further, for the formation of a film when the emulsion is coated on wood, a resin emulsion exemplified by an aqueous solvent may be added to the emulsion as necessary. In the emulsion, a hydrophobic organic solvent is preferably used as the organic solvent for dissolving the active ingredient.

  The emulsion is preferably 1 to 50 parts by weight of the active ingredient when the preparation is 100 parts by weight, and the remainder is an organic solvent, water and a surfactant, and further a resin emulsion. These emulsions are used after diluting with water at a predetermined magnification, for example, 1 to 10 times.

In the case of an oil agent, it is formulated using a hydrocarbon solvent such as kerosene, heavy oil, spindle oil, etc. in addition to the organic solvent exemplified as the aqueous solvent. The amount of the active ingredient is preferably 1 to 100 parts by weight when the formulation is 100 parts by weight.

In the case of powders, the active ingredient is usually a solid diluent (eg kaolin, clay, bentonite, CMC, titanium dioxide, white carbon, talc, wood powder, starch, dextrin, silica gel powder, calcium hydroxide, etc.) , Diluted with anhydrous gypsum, etc.), mixed and pulverized into a formulation.
Moreover, when setting it as a granule, the said powder agent is shape | molded and formulated.
Solid dosages such as powders and granules are preferably 1 to 20 parts by weight of the active ingredient when the formulation is 100 parts by weight.

In the case of an aerosol agent, an organic solvent exemplified by an aqueous solvent can be used as the organic solvent. Further, as the propellant, alternative chlorofluorocarbon and liquefied natural gas can be suitably used. At the time of use, this is used by pressurizing and filling an airtight container provided with a spray part and a valve.

According to the present invention, there is provided a wood treatment method characterized by treating wood with a wood preservative containing at least one selected from squalene and squalane as an active ingredient. Specifically, wood is treated in a conventional manner in a wood injection treatment system consisting of a decompression / pressurization injection can for wood treatment, a tank for chemical storage / recovery, and piping connecting them. A method for treating wood is provided.
The wood treatment method may be a normal method such as coating, dipping, or spraying in addition to the injection method such as decompression or pressurization.

The amount of at least one selected from squalene and squalane in the treatment agent to be injected into the wood by this method depends on the type, use and shape of the wood to be treated, but usually, per 1 m ^{3 of} wood, About 1 to 25 kg. For this purpose, it is convenient that the concentration of the active ingredient in the treatment liquid is 0.01 to 30%.

The wood preservative of the present invention can be used by mixing with many existing wood preservatives / anticides / mold inhibitors. Examples of wood preservatives that can be mixed include tropolone compounds such as hinokitiol (also known as β-Tyaprisin), α-Tyapricin, γ-Tyapricin, β-Drabrin, Notekachin, cinnamaldehyde and its derivatives, linear aldehyde and its derivatives Organic iodo compounds such as 4-chlorophenyl-3-iodopropargyl formal, 3-ethoxycarvinyloxy-1-bromo-1,2-iodopropene, 3-iodo-2-upyrobenlbutylcarbamate , Naphthenic acid metal salts such as copper naphthenate and zinc naphthenate, hydroxylamine compounds such as N-nitrone-cyclohexylhydroxylamine aluminum, naphthalene compounds such as monochloronaphthalene, N-methoxy-N-cyclohexyl-4 − (2, Anilide compounds such as -dimethylfuran) carbalinide, haloalkylthio compounds such as N, N-dimethyl-N'-phenyl-N '(dichlorofluoromethylthio) sulfamide, nitrile compounds such as tetrachloroisophthalonitrile, Tar compounds such as creosote oil, phenols such as dinitrophenol, dinitrocresol, chloronitrophenol, 2,5-dichloro-4-bromophenol, didecyldimethylammonium chloride, didecyldimethylammonium adipate, N-alkyl Quaternary ammonium salts such as benzylmethylammonium chloride, aldehydes such as formalin, glutaraldehyde and paraformaldehyde, organotins such as TBTO and tributyltin phthalate, Alcohols such as diol, isopropanol, propanol, 5-chloro-2-methyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one , 4,5-dichloro-2-octyl-4-isothiazolin-3-one, or isothiazolone compounds such as metal salts thereof, other permethrin, tebuconazole, cyproconazole, propiconazole, azaconazole, 2-mercaptobenzo Organic compounds such as thiazole, arsenic compounds, arsenic pentoxide, sodium hydrogen arsenate, arsenic acid, chromium compounds, chromium trioxide, potassium dichromate, sodium dichromate, ammonium dichromate, copper compounds, oxidized compounds Dicopper, copper sulfate, silver nitrate, sodium fluoride, fluorosilicate , Silicic fluoride zinc borate, sodium borate, and the like inorganic compounds such as antimony oxide.

Moreover, examples of wood ant control agents that can be mixed include tropolone compounds such as hinokitiol, essential oils such as hiba oil and neutral hiba oil, alkyl carboxylic acid derivatives such as decanoic acid, coconut oil derivatives including decanoic acid, phoxime, Organophosphorus compounds such as chlorhopyris, pyridafenthion, tetrachlorbinphos, fenitrothion, propentanephos, pyrethroids such as permethrin, traromesrin, and allethrin, pyrethroid-like compounds such as silafluophene, enphenblox, proboxal, bassa, etc. Carbamate compounds, triazine compounds such as tripropylisocyanurate, naphthalene compounds such as monochloronaphthalene, chlorinated dialkyl ethers such as octachlorodipropyl ether Batch systems compounds, and the like Kurorunikochiniru compounds such as imidacloprid.

The wood preservatives of the present invention are generally intended for wood for construction, civil engineering, and fiber raw materials for manufacturing industrial products such as paper and pulp. However, wood decay fungi are generated especially by the environment and various conditions. It can be suitably used for red pine, cedar and beech that are easy to handle.

If the wood treated with the wood preservative of the present invention is further fully coated with a curable synthetic resin paint having penetrability and film-forming property, the active ingredient can be volatilized even if the treated wood is used outdoors. Leaching is suppressed, the antiseptic effect is further reinforced, and performance that can withstand long-term outdoor use can be imparted. Examples of such curable synthetic resin paints include polyurethane resin paints.

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

A wood preservative formulation was prepared by mixing and stirring the following active ingredients and organic solvent.
Formulation Example 1
Squalene 15 parts by weight Diethylene glycol monomethyl ether 85 parts by weight

The test was based on the performance standards and test methods of wood preservatives (JIS K 1571: 1998) (all with weathering operation). The test strain was Trametes versicolor (L .: Fr.) Pilat FFPRI 1030, which was subcultured from the standard fungus for wood preservatives isolated by the Forest Research Institute of the Ministry of Agriculture, Forestry and Fisheries (FFPRI). Abbreviated as “.”). Reagents and test results are shown in Table 1.

Claims (2)

A wood preservative containing as an active ingredient at least one selected from squalene and squalane. A method for treating wood, comprising treating wood with the wood preservative according to claim 1.