JP7668002B2 - Visualization method for wood processing division - Google Patents

Description

The present invention relates to a method for visualizing wood processing parts.

2. Description of the Related Art In order to impart anti-termite properties and anti-rot properties to wood, a method is employed in which wood is treated by spraying or the like with a wood treating agent containing an insecticidal component, an anti-rot component, etc.
If the treatment with a wood treatment agent is uneven, the parts that are insufficiently treated with the wood treatment agent will be eaten by pests or will rot, so there has been a demand for the ability to visualize the wood treatment area in order to check whether or not wood has been appropriately treated with a wood treatment agent. However, since wood treatment agents are usually colorless, it has been difficult to visualize the wood treatment area.

Therefore, a method has been proposed in which wood is treated with a wood treatment agent containing a colorant to color the wood, thereby making the wood treatment part visible (for example, Patent Document 1).

JP 2005-35288 A

While the above method makes it possible to visualize the treated areas of the wood treatment agent, some people feel that the discoloration of the wood causes it to become dirty and its aesthetic appearance to be diminished. In addition, when wood treatment agents are sprayed onto the wood, there is a risk that the area around the target wood object may also become discolored, which may limit where the agent can be used.

To address these issues, a new method was needed to visualize wood-treated areas in wood without discoloring the wood.

Means to be Solved by the Invention

The present inventors have conducted extensive research to solve the above problems and have arrived at the present invention.
[1] Irradiating ultraviolet light onto wood treated with a wood treatment agent containing an ultraviolet luminescent substance to cause the luminescent substance to emit light;
A visualization method for wood treating parts, which visualizes wood treating parts in wood by detecting the luminescence. [2] The visualization method for wood treating parts as described above, wherein the wood treating agent contains one or more insecticidal components selected from the group consisting of neonicotinoid compounds and pyrethroid compounds as an active ingredient.
[3] The method for visualizing wood treatment sections as described above, wherein the wood treatment agent contains an azole-based compound as an active ingredient in the preservative component.
to provide.

In the present invention, when wood that has been treated with a wood treatment agent containing an ultraviolet luminescent substance is irradiated with ultraviolet light, the luminescent substance contained in the treatment agent emits light, and the wood treatment part in the wood can be visualized by detecting this emission, making it possible to determine whether the wood has been properly treated with the wood treatment agent. In addition, since the ultraviolet luminescent substance used in the visualization method of the present invention is a substance that cannot be identified in the visible light range, there is no risk of impairing the aesthetic appearance, and there are no restrictions on where it can be used.

The ultraviolet luminescent material used in the present invention is a material that can be identified by luminescence when irradiated with ultraviolet light, but cannot be identified in the visible light range. More specifically, it is a material that emits light when irradiated with ultraviolet light having a dominant wavelength of 300 nm to 400 nm by a black light, and cannot be easily identified with the naked eye under the visible light range. Examples of such materials include organic luminescent materials such as fluoresceins, rhodamines, coumarins, pyrenes, cyanines, and flavins, and inorganic luminescent materials such as rare earth elements and quantum dots.
The color tones of light emitted by these ultraviolet emitting substances include blue, red, green, yellow, and white, and among these, it is preferable to use an ultraviolet emitting substance that emits green light.

The ultraviolet luminescent material is contained in commercially available pigments such as MLCB-12 (green), MLCB-13 (red), MLCB-18 (blue), and FM-109 (white) manufactured by Shinloihi Co., Ltd., and therefore, in the present invention, such pigments can be blended into the wood treatment agent by the method described below.

The wood treatment agent in the present invention is usually a formulation containing one or more active ingredients such as insecticidal ingredients, preservative ingredients, antifungal ingredients, repellent ingredients, and insect growth inhibitor ingredients. A diluted solution obtained by diluting the formulation with water may also be used. By blending the pigment in the formulation or diluted solution, a wood treatment agent containing an ultraviolet emitting substance is obtained. The pigment containing an ultraviolet emitting substance is usually blended in an amount of 0.1 to 1.0% by weight of the wood treatment agent.

Examples of insecticidal components include organophosphorus compounds such as fenitrothion; pyrethroid compounds such as permethrin; pyrethroid-like compounds such as silafluofen and entofenprox; carbamate compounds such as fenobucarb; neonicotinoid compounds such as clothianidin; pyrroles such as boric acid, hydramethylnon, and chlorfenapyr; phenylpyrazole compounds; and metadiamide compounds such as broflanilide.

Examples of preservative ingredients include triazole derivatives, sulfonamides, benzimidazoles, thiocyanates, morpholine derivatives, organic bromine derivatives, isothiazolines, benzoisothiazolines, pyridines, metal salts, organic tin derivatives, dialkyldithiocarbamates, nitriles, microbial agents containing active halogen atoms, benzothiazoles, quinolines, compounds that release formaldehyde, hydroxylamines, naphthalenes, anilides, haloalkylthios, nitriles, tars, aldehydes, straight-chain fatty acids, aromatic carboxylic acids, alcohols, and isothiazolines.

The content of these active ingredients is usually 0.01 to 20% by weight of the total amount of the wood treatment agent.

Examples of formulations containing the active ingredient include oil solutions, emulsions, solubilized preparations, wettable powders, powders, flowable preparations (suspensions in water, emulsions in water, etc.), suspoemulsions, etc. Of these, it is preferable to use aqueous formulations.

When formulating the formulation, in addition to the active ingredients, other ingredients such as solvents, surfactants, pH adjusters, defoamers, rust inhibitors, viscosity adjusters, light stabilizers, UV absorbers, dispersants, emulsifiers, buffers, antioxidants, thickeners, etc. are used and the formulation is made by known methods.

Examples of the solvent include water, aromatic or aliphatic hydrocarbons (alkylbenzene, phenylxylylethane, etc.), alcohols (polypropylene glycol, cyclohexanol, 2-methyl-1-butanol, etc.), ethers (diethylene glycol monohexyl ether, ethylene glycol mono-2-ethylhexyl ether, ethylene glycol diethyl ether, etc.), esters (ethyl acetoacetate, ethyl propionate, diisononyl phthalate, dioctyl phthalate, acetyl tributyl citrate, etc.), ketones (methyl n-butyl ketone, isophorone, etc.), etc.

As the surfactant, a nonionic surfactant or an anionic surfactant can be used. Examples of nonionic surfactants include polyoxyalkylene allyl phenyl ether, polyoxyalkylene alkyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene allyl phenyl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene alkyl phenyl ether formaldehyde condensate, polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene-polyoxypropylene block polymer alkyl phenyl ether, sorbitan fatty acid ester (e.g., sorbitan monooleate, sorbitan monolaurate, sorbitan monostearate, sorbitan trioleate, etc.), polyoxyethylene Examples of the nonionic surfactants include polyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters (e.g., polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, etc.), polyoxyethylene castor oil ether, polyoxyethylene hydrogenated castor oil ether, polyethylene glycol fatty acid esters, etc. Commercially available nonionic surfactants include New Kalgen (registered trademark) CP-120 (manufactured by Takemoto Oil Co., Ltd.), New Kalgen D-240K (manufactured by Takemoto Oil Co., Ltd.), New Kalgen D-931 (manufactured by Takemoto Oil Co., Ltd.), New Kalgen CP-80 (Takemoto Oil Co., Ltd.), etc. Examples of anionic surfactants include alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl phenyl ether sulfates, polyoxyethylene benzyl (or styryl) phenyl ether sulfates, polyoxyethylene-polyoxypropylene block polymer sulfates, alkyl sulfonates, dialkyl sulfosuccinates, alkyl benzene sulfonates, mono- or di-alkyl naphthalene acid sulfonates, naphthalene sulfonate formaldehyde condensates, lignin sulfonates, polyoxyethylene alkyl phenyl ether sulfonates, polyoxyethylene Examples of the surfactant include alkyl ether sulfosuccinate, polyoxyethylene alkyl ether phosphate, polyoxyethylene, mono- or di-alkyl phenyl ether phosphate, polyoxyethylene benzyl (or styryl) phenyl ether phosphate, polyoxyethylene benzyl (or styryl) phenyl ether phosphate, and polyoxyethylene-polyoxypropylene block polymer phosphate. Examples of commercially available anionic surfactants include New Calgen EP-70G (manufactured by Takemoto Yushi Co., Ltd.) and New Calgen FS-72PG (manufactured by Takemoto Yushi Co., Ltd.). Two or more of these surfactants may be used in combination. Examples of commercially available surfactants that are mixtures of nonionic and anionic surfactants include New Calgen FS-26 (manufactured by Takemoto Yushi Co., Ltd.), New Calgen KL-30 (manufactured by Takemoto Yushi Co., Ltd.), Sanimal (registered trademark) SFT (manufactured by Nippon Nyukazai Co., Ltd.), and Sorpole (registered trademark) SM-100PM (manufactured by Toho Chemical Industry Co., Ltd.).

In the present invention, the wood treatment agent may be applied to wood by a known method. For example, the wood may be treated with the wood treatment agent using a water brush, roller, sprayer, etc., or the wood may be treated by immersing it in the wood treatment agent.

In the present invention, first, wood treated with a wood treatment agent containing an ultraviolet luminescent substance is irradiated with ultraviolet light using a commercially available black light or the like. When irradiated with ultraviolet light, the substance emits light, and the luminescence is visually detected to visualize the wood treatment area. Areas that do not emit light even when irradiated with ultraviolet light are areas that have not been properly treated with the wood treatment agent, and so by re-treating these areas with the wood treatment agent, the wood can be properly treated with the wood treatment agent.

The present invention will be further explained below with reference to examples, but the present invention is not limited to these examples.

[Formulation Example 1]
As a formulation, Gantner MC for wood (manufactured by Sumika Environmental Science Co., Ltd., active ingredients: clothianidin, hexaconazole) was mixed with MLCB-12 (manufactured by Shinroihi Co., Ltd.) to a concentration of 4% by weight, and then the mixture was diluted 20 times with water to obtain wood treatment agent 1.

[Formulation Example 2]
Wood treatment agent 2 was obtained in the same manner as in Formulation Example 1, except that MLCB-12 was changed to MLCB-13 (manufactured by Shinroihi Co., Ltd.).

[Formulation Example 3]
As a formulation, Gantner 20EC for wood (manufactured by Sumika Environmental Science Co., Ltd., active ingredients: clothianidin, hexaconazole, IPBC) was mixed with FM-109 (manufactured by Shinroihi Co., Ltd.) to a concentration of 5% by weight, and then the mixture was diluted 20 times with water to obtain wood treatment agent 3.

[Formulation Example 4]
As a formulation, Gantner MC for wood (manufactured by Sumika Environmental Science Co., Ltd., active ingredients: clothianidin, hexaconazole) was diluted 20 times with water, and then MLCB-12 (manufactured by Shinroihi Co., Ltd.) was mixed in to give a concentration of 0.2% by weight to obtain Wood Treatment Agent 4.

Wood treatment agents 1 to 4 were sprayed onto wood and air-dried to treat the wood with the wood treatment agents containing ultraviolet luminescent substances. When ultraviolet light was irradiated onto each piece of wood using a black light (PW-UV141P-01, manufactured by Contec), the ultraviolet luminescent substances contained in the wood treatment agents emitted light. By detecting this light emission, the wood treatment area on the wood could be visualized.

Claims (3)

wood treated with a wood treatment agent containing an ultraviolet luminescent substance that emits green light in the visible light wavelength range of 490-550 nm is irradiated with ultraviolet light having a peak wavelength of 375 nm, causing the luminescent substance to emit light;
A method for visualizing a wood processing part, which visualizes a wood processing part in wood by detecting the luminescence. The method for visualizing wood treatment sections according to claim 1, wherein the wood treatment agent contains one or more insecticidal components selected from the group consisting of neonicotinoid compounds and pyrethroid compounds as active ingredients. 3. The method for visualizing wood treating parts according to claim 1, wherein the wood treating agent contains an antiseptic component of an azole compound as an active ingredient.