Wood protection method, hybrid wood protection paint kit, and wood protection impregnation material

Abstract

To provide a wood protecting method capable of protecting the aged deterioration of wood over a long period of time without damaging the original feeling of wood.SOLUTION: The wood protection method of the present invention includes a step of impregnating wood to be protected with an impregnation material containing a silicon material at a concentration of 85.0% by mass or more and not containing water and a solvent, and a step of forming a coating film by applying a weather resistant coating material containing an acrylic silicon resin usable for a water-based coating material and a silicone resin usable for a water-based coating material and different from the acrylic silicon resin to the wood impregnated with the impregnation material.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a wood protection method, a hybrid wood protection paint kit, and a wood protection impregnation for protecting wood. [Background technology]

[0002] The active use of wood in buildings is being promoted, with the Wood Utilization Promotion Act coming into effect for public buildings and other structures.

[0003] The exteriors of buildings are constantly exposed to ultraviolet rays, wind, and rain. Therefore, in order to use wood for exteriors, it is necessary to address the aging deterioration caused by exposure to ultraviolet rays, wind, and rain, such as discoloration and cracking. In addition, wood expands and contracts as it absorbs and releases moisture depending on the ambient humidity, causing its dimensions to change. Therefore, wood for exterior use must be able to adapt to these dimensional changes. If wood does not adapt to dimensional changes well, it will crack and peel over time, losing its effectiveness as a covering material. Furthermore, wood, whether for exterior or interior use, must also be biologically resistant to pests, algae, and moss.

[0004] Conventionally, methods for imparting dimensional stability and water repellency to building materials such as wood involve coating or impregnating the material with a solution of silicone, acrylic, urethane, ester, or oil-based resin or monomer, followed by drying. Of these, silicone-based products are widely used, with solvent-diluted silicone-based water repellents being the most common.

[0005] However, solvent-diluted water repellents pose risks such as fire, explosion, and poisoning. Furthermore, from the perspectives of protecting the global environment and utilizing resources, there is a strong demand for the development of solvent-free water repellents. In particular, there is a strong demand for the development of high-performance water-based water repellents.

[0006] For example, developments are underway regarding a method for treating wood with silicon compound materials (Patent Document 1), a water repellent agent made of silicon compounds that is applied to the surface of wood (Patent Document 2), an oil-based paint that penetrates into wood (Patent Document 3), and an organic-inorganic composite paint that forms a coating on the surface of wood (Patent Documents 4 and 5).

[0007] The method of forming a coating can achieve better waterproofing and weather resistance than applying a water-repellent agent. However, there are downsides, such as the need for large-scale equipment and the fact that the coating can ruin the original texture of the wood. Also, oil-based paints have high penetration into wood, allowing insect repellents, preservatives, algae inhibitors, and mold inhibitors to penetrate into the wood, but oil-based paints are being avoided in recent years due to environmental concerns, and they are also less durable due to their poor resistance to water and ultraviolet rays, which are factors that cause wood to deteriorate. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Special Publication No. 2005-511262 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-51236 [Patent Document 3] Japanese Patent Application Laid-Open No. 2009-16731 [Patent Document 4] Japanese Patent Application Laid-Open No. 2008-303291 [Patent Document 5] Patent Publication No. 2021-102673 Summary of the Invention [Problem to be solved by the invention]

[0009] As mentioned above, various methods for protecting wood have been developed. However, there has not been a method that can adequately protect wood from deterioration factors such as water and ultraviolet rays, and biological factors, without losing the wood's texture, and that can adequately deal with aging deterioration such as discoloration and cracking of wood, with a thinner coating film.

[0010] The objects of the present invention are to provide a wood protection method capable of protecting wood from deterioration over time for a long period of time without damaging the wood's original texture, a hybrid wood protection paint kit capable of protecting wood from deterioration over time for a long period of time without damaging the wood's original texture, and a wood protection impregnating material capable of protecting wood from deterioration over time for a long period of time without damaging the wood's original texture. [Means for solving the problem]

[0011] In order to solve the above problems, the present invention provides a wood protection method, comprising: A step of impregnating wood to be protected with an impregnating material containing a silicon material at a concentration of 85.0% by mass or more and containing no water or solvent; a step of applying a weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin to the wood impregnated with the impregnating material to form a coating film; The present invention provides a method for protecting wood, comprising:

[0012] The present invention also provides the above wood protection method, wherein the silicon material comprises at least one selected from the group consisting of a hydrolyzate of a tetraalkoxysilane and / or a condensation compound thereof, and a modified product thereof.

[0013] The present invention also provides the above-described wood protection method, wherein the impregnating material further contains an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a viscosity adjuster, and a coating component for the impregnating material.

[0014] The present invention also provides the above wood protection method, wherein the weight ratio of the acrylic silicone resin to the silicone resin different from the acrylic silicone resin in the weather-resistant paint is 90 / 10-50 / 50.

[0015] The present invention also provides the above-described wood protection method, wherein the weather-resistant paint further contains an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a solvent, a viscosity adjuster, and a weather-resistant coating component.

[0016] The present invention also provides a silicon material having a concentration of 85.0% by weight or more, an impregnating material containing no water or solvent, A weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin is applied to the wood impregnated with the impregnating material. The present invention provides a hybrid wood protection paint kit comprising:

[0017] The present invention also provides the above-mentioned hybrid wood protection paint kit, wherein the silicon material comprises at least one selected from the group consisting of hydrolysates of tetraalkoxysilanes and / or their condensation compounds, and modified products thereof.

[0018] The present invention also provides the above hybrid wood protection paint kit, wherein the impregnating material further comprises an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a viscosity adjuster, and a coating component for the impregnating material.

[0019] The present invention also provides the above hybrid wood protection paint kit, wherein the weight ratio of the acrylic silicone resin to the silicone resin different from the acrylic silicone resin in the weather-resistant paint is 90 / 10-50 / 50.

[0020] The present invention also provides the above hybrid wood protection paint kit, wherein the weather-resistant paint further contains an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a solvent, a viscosity adjuster, and a weather-resistant coating component.

[0021] The present invention also provides an impregnating material for protecting wood, which contains a silicon material at a concentration of 85.0% by mass or more and is free of water and solvents.

[0022] The present invention also provides the above-mentioned impregnating material for protecting wood, wherein the silicon material comprises at least one selected from the group consisting of hydrolysates of tetraalkoxysilanes and / or condensation compounds thereof, and modified products thereof. [Effects of the Invention]

[0023] In the wood protection method of the present invention, wood to be protected is impregnated with an impregnating material containing an inorganic silicon material at a concentration of 85.0 mass% or more and containing no solvent, and then a weather-resistant paint containing an aqueous organic acrylic silicone resin and an inorganic modified silicone resin is applied to the wood impregnated with the impregnating material to form a coating film.

[0024] The impregnating material can be impregnated into wood and fill voids in the wood. Furthermore, since the impregnating material does not contain a solvent, it contains little or no water, a deterioration factor. Furthermore, since the silicon material contained in the impregnating material is a material that is not compatible with water, impregnating wood with the material can impart sufficient water repellency and waterproofing to the wood. Furthermore, while there have been no impregnating materials containing inorganic silicon materials at concentrations of 85.0% by mass or more in the past, applying a weather-resistant paint to wood impregnated with an impregnating material containing such a high concentration of inorganic silicon material can prevent the weather-resistant paint from penetrating into the wood and improve adhesion to the paint film. As a result, the impregnating material impregnated into wood can maintain weather resistance for a long period of time. Furthermore, because it exhibits waterproof and water-repellent effects, it can prevent the wood from absorbing moisture, thereby imparting dimensional stability to the wood over time.

[0025] Because the impregnating material does not contain water or solvent, it can fill the voids in the wood at a high density, improving the adhesion between the wood and the weather-resistant paint film. The impregnating material impregnated into the wood not only does not attack the weather-resistant paint film, but, as mentioned above, it can prevent the weather-resistant paint from penetrating into the wood and improve the adhesion to the paint film.

[0026] The weather-resistant paint film can lock in the components contained in the impregnating material that has been impregnated into the wood. Furthermore, by forming a coating film on wood that has been impregnated with the impregnating material, the wet color of the impregnating material can be improved, and the original texture of the wood can be exhibited.

[0027] That is, according to the wood protection method of the present invention, it is possible to protect wood from deterioration over time for a long period of time without damaging the original texture of the wood.

[0028] The hybrid wood protection paint kit of the present invention comprises the above-mentioned impregnating material and the above-mentioned weather-resistant paint.

[0029] Using this wood protection paint kit, the impregnating material is applied to the wood to be protected, the wood is impregnated with the impregnating material, and then a weather-resistant paint is applied to the wood that has been impregnated with the impregnating material to obtain a coating film.For the reasons explained above, this makes it possible to protect the wood from deterioration over time for a long period of time without damaging the wood's original texture.

[0030] Furthermore, as described above, the impregnated material of the present invention can maintain weather resistance for a long period of time and can also impart dimensional stability to wood over time. DETAILED DESCRIPTION OF THE INVENTION

[0031] The wood protection method of the present invention is a solvent-free impregnating material containing a silicon material at a concentration of 85.0% by mass or more, by impregnating the wood to be protected with this impregnating material, which can impart sufficient water repellency and waterproofing to the wood and provide dimensional stability over time. Furthermore, in the wood protection method of the present invention, a coating film is formed on the wood impregnated with the impregnating material using a weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints but is different from the acrylic silicone resin. This prevents the components contained in the impregnating material from escaping from the wood and maintains the original texture of the wood. Therefore, the wood protection method of the present invention can protect wood from deterioration over time for a long period of time without damaging the original texture of the wood.

[0032] In other words, the wood protection method of the present invention is a hybrid multi-layer protection method that utilizes two coating layers: an impregnating material coating and a weather-resistant paint coating. This method provides long-term wood protection that cannot be achieved with only an impregnating material coating or a weather-resistant paint coating. It is particularly effective for protecting objects that have gaps through which the impregnating material can penetrate, and is particularly effective for protecting wood.

[0033] Furthermore, the hybrid wood protection paint kit of the present invention can be used, for example, in the above-mentioned wood protection method, thereby making it possible to protect wood from deterioration over time for a long period of time without damaging the original texture of the wood.

[0034] Furthermore, the impregnated wood protection material of the present invention can impart sufficient water repellency and waterproofing to wood, and can also impart dimensional stability to wood over time.

[0035] The wood protection method, hybrid wood protection paint kit, and wood protection impregnating material of the present invention will be described in detail below. However, the following is merely an example, and the present invention is not limited to the embodiments described below.

[0036] [Wood protection method] The wood protection method of the present invention comprises: A step of impregnating wood to be protected with an impregnating material containing a silicon material at a concentration of 85.0% by mass or more and not containing a solvent; a step of applying a weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin to the wood impregnated with the impregnating material to form a coating film; Includes.

[0037] According to the wood protection method of the present invention, an impregnating material containing a high concentration of silicon material penetrates into wood, imparting sufficient water repellency and waterproofing to the wood and providing dimensional stability to the wood over time, while the weather-resistant paint coating prevents the impregnating material from coming off and improves the wet color caused by the impregnating material. As a result, it is possible to protect wood from deterioration over time for a long period of time without impairing the wood's original texture. This effect is particularly pronounced when the wood to be protected is one that can be penetrated by the impregnating material. Furthermore, the effect of the present invention can only be obtained by applying two layers of the impregnating material and weather-resistant paint to the wood.

[0038] Therefore, the wood to be protected by the wood protection method of the present invention is not particularly limited as long as it is wood. The present invention can be applied not only to exterior wood but also to interior wood. Although interior wood is rarely exposed to wind and rain, there is a high risk of it being exposed to domestic water. The protection method of the present invention can protect wood not only from wind and rain but also from domestic water.

[0039] Each step of the wood protection method of the present invention will be described in detail below.

[0040] [Impregnation process for impregnating material] The impregnating material used in this step contains a silicon material at a concentration of 85.0 mass % or more and does not contain a solvent.

[0041] The silicon material preferably includes at least one selected from the group consisting of hydrolysates of tetraalkoxysilanes and / or their condensation compounds, and modified products thereof. For example, the silicon material may be a compound represented by the following general formula (1): This compound is obtained by partially hydrolyzing a mono- to tetrafunctional alkoxysilyl compound with a known catalyst such as an acid, a base, an organotin compound, or an organotitanium compound, followed by dealcoholization condensation. The compound has hydrolyzable groups derived from the alkoxysilyl compound at the molecular chain terminals and / or side chains, and has a linear or three-dimensional network structure.

[0042] R 1 X -(Si-O) n -(OR 2 ) 4-X (1)

[0043] In the above general formula (1), R 1 and R 2 are each independently selected from aliphatic, cyclic, or aromatic hydrocarbon groups having 1 to 18 carbon atoms, which may have a substituent selected from the group consisting of an amino group, a mercapto group, a glycidyl group, an acrolyl group, a methacryloyl group, and a vinyl group.

[0044] Examples of trialkoxysilanes in which n=1 and x=1 in the above general formula include methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, cyclohexyltrimethoxysilane, cyclohexyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, i-propyltrimethoxysilane, i-propyltriethoxysilane, n-pentyltrimethoxysilane, n-hexyltrimethoxysilane, n-heptyltrimethoxysilane, n-octyltrimethoxysilane, n-butyltrimethoxysilane, n-butyltriethoxysilane, 3-methyltrimethoxysilane, and methyltriethoxysilane. Examples include glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, (3,4-epoxycyclohexyl)methyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, 3,3,3-trifluoropropyltriethoxysilane, methacryloxypropyltrimethoxysilane, and methacryloxypropyltriethoxysilane.

[0045] In the above general formula (1), n=1, X Examples of dialkoxysilanes where =2 include dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3,3,3-trifluoropropylmethyldimethoxysilane, and 3,3,3-trifluoropropylmethyldiethoxysilane.

[0046] In the above general formula (1), silicate oligomers, which are condensates of tetraalkoxysilanes where n = 2 to 200 and x = 0, can be obtained by hydrolysis and condensation of, for example, tetramethoxysilane, tetraethoxysilane, tetrapropyloxysilane, tetrabutoxysilane, or tetraphenoxysilane. n can be adjusted by controlling the hydrolysis rate. This hydrolysis and condensation can be carried out by known methods.

[0047] n is 2 to 200, and those containing mainly components where n=2 to 20 are particularly preferred.

[0048] Examples of commercially available products include Wacker Silicate TES 40WN manufactured by Asahi Kasei Wacker Silicone Co., Ltd., Ethyl Silicate 28, n-propyl silicate, n-butyl silicate, and Ethyl Silicate 40 manufactured by Colcoat Co., Ltd., and MKC Silicate MS51 manufactured by Mitsubishi Chemical Corporation.

[0049] n=2~200, x=0~3, and two or more XThere are no particular limitations on the compounds as long as they are obtained from chemical formula (1), and examples of commercially available products include KC-89S, KR-213, KR-242A, KC-89, KC-89S, KR-400, KR-500, KR-510, X-40-9225, X-40-9246, X-40-9250, X-40-9227, X-40-9238, and X-40-9247 manufactured by Shin-Etsu Chemical Co., Ltd. , X-40-9250, KR-251, KR-400, KR-401N, KR-500, KR-510, KR-9216, KR-9218, KR-217, -41-1805, X-41-1810, X-40-175, X-40-2239, X-40-2308, X-40-2327, X-40-2651, X-40-2655A, X-40-9740, KR -271, KR-282, KR-300, KR-311, KR-212, KR-213, KR-255, ES-1001N, ES-1002T, ES-1023, ES-5206, ES-5230, ES-5235, ES-9706, and X-22-4309, Momentive Performance XC96-B0446, XR31-B1410, XR31-B2733, XR31-B2230, and TSR1 Examples of commercially available materials include 65, XR31-B6667, and XR31-B1763, SR2406, SR2410, SR2420, SR2416, SR2402, AY42-161, 804RESIN, 805RESIN, 840RESIN, and SR-2400 manufactured by Dow Corning Toray Silicone Co., Ltd., FZ-3704 and FZ-3511 manufactured by Nippon Unicar Co., Ltd., and SILRES BS-290, SILRES SC2103, SILRES BS BMK2102J, SILRES BS1042, SILRES K, SILRES KX, SILRES HK46, SILRES REN50, SILRES REN60, SILRES H62C, SILRES, and MES100 manufactured by Wacker Asahi Kasei Silicone Co., Ltd.

[0050] Alternatively, the silicon material may be a methyl silicate oligomer, an ethyl silicate oligomer, a siloxane, or a hexyltriethoxysilane.

[0051] The impregnating material used in the present invention contains such silicon material at a concentration of 85.0% by mass or more. The impregnating material used in the present invention also does not contain water or solvent. Here, "free of water and solvent" also includes embodiments in which components that may be contained in water or solvent are contained in unavoidable amounts. In this specification, "free of water and solvent" also includes embodiments in which water or alcohol, or diluent solvents capable of dissolving silicon material (e.g., toluene and xylene), that may be contained in the raw material of the silicon material or contained as a by-product, are contained in an amount of 10% by mass or less. .

[0052] Such an impregnating material can be impregnated into the wood to be protected, filling the voids in the wood. Furthermore, since the impregnating material does not contain water or solvents, it contains little or no water, a deterioration factor. This prevents water, a deterioration factor, from penetrating directly into the wood. Furthermore, since the silicon material contained in the impregnating material is a water-incompatible material, impregnating wood with the material can impart sufficient water repellency and waterproofing to the wood. Furthermore, while there have been no impregnating materials containing silicon materials at concentrations of 85.0% by mass or more in the past, applying a weather-resistant paint to wood impregnated with an impregnating material containing such a high concentration of silicon can prevent the weather-resistant paint from penetrating into the wood and improve adhesion to the paint film. As a result, the impregnating material impregnated into wood can maintain its weather resistance for a long period of time. Furthermore, because it exhibits waterproof and water-repellent effects, it can prevent the wood from absorbing moisture, thereby imparting dimensional stability to the wood over time.

[0053] The impregnating material preferably contains 87.5 mass % or more, and more preferably 90 mass % or more, of silicon material. The upper limit of the silicon material content is not particularly limited, but can be, for example, 99.9 mass %.

[0054] The impregnating material used in this invention does not contain water or solvent, but contains a high concentration of silicon material, which makes it possible to accelerate the curing process after wood impregnation and prevents the solvent from remaining in the wood for a long period of time or the wood components from leaching out together with the solvent.In particular, because the developed high-concentration impregnating material does not contain water, it is also possible to suppress moisture penetration during the subsequent process of applying a water-based, highly weather-resistant wood paint.

[0055] The impregnating agent may further contain a coloring pigment and / or an extender pigment from the viewpoints of coloring, gloss adjustment, and ultraviolet protection.

[0056] Examples of the color pigment include titanium oxide, zinc oxide, aluminum oxide, cerium oxide, carbon black, graphite, black iron oxide, iron-chromium composite oxide, manganese-bismuth composite oxide, manganese-yttrium composite oxide, iron-manganese composite oxide, iron-copper-manganese composite oxide, iron-chromium-cobalt composite oxide, copper-chromium composite oxide, copper-manganese-chromium composite oxide, red iron oxide, molybdate orange, permanent red, permanent carmine, anthraquinone red, perylene red, quinacridone red, yellow iron oxide, titanium yellow, fast yellow, benzimidazolone yellow, chrome green, cobalt green, phthalocyanine green, ultramarine blue, Prussian blue, cobalt blue, phthalocyanine blue, quinacridone violet, dioxazine violet, aluminum pigments, and pearl pigments. These can be used alone or in combination of two or more.

[0057] Examples of the extender pigment include heavy calcium carbonate, light calcium carbonate, kaolin, clay, china clay, diatomaceous earth, hydrous finely powdered silicic acid, talc, barite powder, barium sulfate, precipitated barium sulfate, barium carbonate, magnesium carbonate, silica powder, and aluminum hydroxide. The extender pigment can also function as a gloss-adjusting pigment. These can be used alone or in combination of two or more.

[0058] The impregnating agent may further include an ultraviolet absorber.

[0059] The ultraviolet absorber is not particularly limited, and commercially available materials such as triazine-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, benzotriazole-based ultraviolet absorbers, cyanoacrylate-based ultraviolet absorbers, and hydroxybenzoate-based ultraviolet absorbers can be used. Specific examples include Tinuvin 326, Tinuvin 99-2, Tinuvin 384-2, Tinuvin 400, Tinuvin 900, Tinuvin 447, Tinuvin 928, Tinuvin 405, Tinuvin 1130, Tinuvin 400-DW ECO, Tinuvin 477-DW ECO, and Tinuvin 994-DW ECO (manufactured by BASF). These can be used alone or in combination of two or more.

[0060] The impregnating agent may further contain one or more of an antioxidant, a light stabilizer, an insect repellent, a preservative, an antifoaming agent, a dispersant, a pH adjuster, a viscosity adjuster, and a coating component for an impregnating material.

[0061] The antioxidant is not particularly limited, and commercially available materials such as hindered phenol-based antioxidants can also be used, specifically IRGANOX 1010, IRGANOX 1135, and IRGANOX 1520L (manufactured by BASF). These can be used alone or in combination of two or more.

[0062] The light stabilizer is not particularly limited, and commercially available materials can be used. Examples include Tinuvin 111FDL, Tinuvin 123, Tinuvin 144, Tinuvin 249, Tinuvin 292, Tinuvin 5100, Tinuvin 770DF, Tinuvin 123-DW ECO, and Tinuvin 249-DW ECO. These can be used alone or in combination of two or more.

[0063] Examples of insecticides include antiseptic and anti-termite compounds, such as creosote oil, boron compounds, inorganic copper compounds, inorganic chromium compounds, organic acid metal salts, organometallic compounds, quaternary ammonium salt compounds, phenolic compounds, organic iodine compounds, organophosphorus compounds, hydroxyamine compounds, naphthalene compounds, quinoline compounds, anilide compounds, haloalkylthio compounds, benzothiazole compounds, benzimidazole compounds, thiocyanate compounds, triazole compounds, carbamate compounds, pyrethroid compounds, and neonicotinoid compounds, which can be used alone or in combination.

[0064] Examples of preservatives include isothiazoline compounds such as 1,2-benzothiazolin-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, Nn-butyl-benzisothiazolin-3-one, 1,2-benzisothiazolin-3-one, or salts thereof; organic chlorine compounds such as 4,5-dichloro-1,2-dithiolan-3-one; organic bromine compounds such as 2-bromo-2-nitropropane-1,3-diol and 2,2-dibromo-2-nitroethanol;Organic iodine compounds such as 3-iodo-2-propynyl butylcarbamate, diiodomethyl-p-tolylsulfone, and p-chlorophenyl-3-iodopropargyl formal, aldehyde compounds such as glutaraldehyde and o-phthalaldehyde, dithiol compounds such as 4,5-dichloro-1,2-dithiol-3-one, thiocarbamate compounds such as tetramethylthiuram disulfide, and phenolic compounds such as 3-methyl-4-isopropylphenol and 2-isopropyl-5-methylphenol. nitrile compounds such as 2,4,5,6-tetrachloroisophthalonitrile and 5-chloro-2,4,6-trifluoroisophthalonitrile; phthalimide compounds such as N-(fluorodichloromethylthio)phthalimide; haloalkylthio compounds such as N-(fluorodichloromethylthio)-N,N'-dimethyl-N-phenyl-sulfamide; pyridine compounds such as 8-oxyquinoline, 2,3,5,6-tetrachloro-4-(methylsulfonyl)pyridine and bis(2-pyridito-1-oxide)zinc; dichloroisophthalonitrile compounds such as 2,4,5,6-tetrachloroisophthalonitrile and 5-chloro-2,4,6-trifluoroisophthalonitrile; pyrithione compounds such as phosphate pyrithione and sodium pyrithione, thiazole compounds such as 2-(thiocyanomethylthio)benzthiazole, urea compounds such as 3-(3,4-dichlorophenyl)-1,1-dimethylurea, imidazole compounds such as methyl-2-benzimidazole carbamate, 2-(4-thiazolyl)benzimidazole, 2-(4'-thiazolyl)benzimidazole, and methyl 2-benzimidazolecarbamate, N,N',N''-trishydroxyethylhexahydro Examples of suitable antifungal agents include triazine compounds such as 2-methylthio-4-t-butylamino-6-cyclopropylamino-s-triazine, triazole compounds such as tebuconazole, propiconazole, azaconazole, and cyproconazole, anilide compounds such as 3,4,4'-trichlorocarbanilide and 3-trifluoromethyl-4,4'-dichlorocarbanilide, and oxathiazines such as 3-benzo[b]thien-2-yl-5,6-dihydro-1,4,2-oxathiazine 4-oxide. These compounds can be used alone or in combination. These compounds can also be used as anti-algae agents and anti-fungal agents.

[0065] The antifoaming agent is not particularly limited, and examples thereof include silicone-based antifoaming agents, polymer-based (non-silicone-based) antifoaming agents, and mineral oil-based antifoaming agents, and commercially available materials can also be used. These can be used alone or in combination of two or more.

[0066] The dispersant may be a resin having a structure containing a pigment-affinity moiety, such as a nonionic, cationic, or anionic functional group. The pigment dispersant may have two or more of the above functional groups in one molecule. Examples of nonionic functional groups include a hydroxyl group, an amide group, and a polyoxyalkylene group. Examples of cationic functional groups include an amino group, an imino group, and a hydrazino group. Examples of anionic functional groups include a carboxyl group, a sulfo group, and a phosphate group, and commercially available materials can also be used. These can be used alone or in combination of two or more.

[0067] Examples of pH adjusters include amines such as triethylamine and diethanolamine, and bases such as ammonia, sodium hydroxide, and potassium hydroxide. These can be used alone or in combination of two or more.

[0068] Examples of viscosity modifiers include polyacrylic acid-based viscosity modifiers, polyurethane association-type viscosity modifiers, cellulose-based viscosity modifiers, and polyamide-based viscosity modifiers, and commercially available materials can also be used. These can be used alone or in combination of two or more.

[0069] The impregnating material may also contain a coating component for the impregnating material, which may be, for example, one or more resins selected from the group consisting of alkyd resins, acrylic-modified alkyd resins, acrylic acid resins, epoxy resins, melamine resins, vinyl resins, polyester resins, and polyurethane resins.

[0070] The impregnation of wood with the impregnating material can be carried out, for example, by painting (coating).

[0071] The method for painting (applying) the impregnating material to wood may be, for example, spray coating, roller coating, brush coating, trowel coating, application with a rag, etc. Drying may be carried out at room temperature (preferably 0 to 40°C), and can also be carried out with heating if necessary.

[0072] By applying an impregnating material containing such additives to wood, not only can waterproofing and water-repellent properties be imparted to the interior of the wood, but the effects of each additive can also be imparted to the interior of the wood.

[0073] [Process of applying weather-resistant paint and forming a coating] However, it has been found that when such an impregnating material is applied to wood, the wood takes on a wet color, which impairs the wood's natural texture.

[0074] The present inventors have conducted extensive research to solve this problem, and as a result have discovered that the original texture of the wood can be restored by applying a weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints but is different from the acrylic silicone resin to wood that has been impregnated with an impregnating material, thereby forming a paint film.

[0075] The weather-resistant paint used in this process contains an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin. In the weather-resistant paint, the weight ratio of the acrylic silicone resin to the silicone resin that is different from the acrylic silicone resin is preferably 90 / 10-50 / 50.

[0076] The acrylic silicone resin usable in the water-based paint is not particularly limited and may be synthesized by a conventionally known synthesis method, may be a commercially available product, or may be used in any combination of two or more. Examples of such commercially available products include: Pegal 896 and Pegal 751 manufactured by Koatsu Gas Kogyo Co., Ltd.; Acryset and U-Double, which are commercially available products manufactured by Nippon Shokubai Co., Ltd., such as U-Double E-135, U-Double EF-100-F, U-Double EF-008, U-Double EF-016, U-Double EF-019, U-Double EF-002, and Acryset EX-102SI; Polysol, which is commercially available products manufactured by Resonac Co., Ltd., such as Polysol AP-3900, AP4710, AM610, AM961, and AP1761; Boncoat and Watersol, which are commercially available products manufactured by Dainippon Ink and Chemicals, Inc., such as Boncoat DV-759EF, Boncoat SA-6360, and Boncoat AB. -901 BASF, Acronal, a commercially available product manufactured by Dispersion Co., Ltd.; for example, Acronal 7064, Acronal 7619; Yodozole and Kanebinol, commercially available products manufactured by Henkel Technologies Japan Co., Ltd.; for example, AD57, AD93, and AD112; Japan Coating Resins, commercially available products such as LDM7523, 7110, and HS-531; Primal, a commercially available product manufactured by Rohm & Haas; for example, Primal PR-20 and Primal PR-29; Zemulac, a commercially available product manufactured by Kaneka Corporation; for example, W3108F and W3153CF; and Polydurex, a commercially available product manufactured by Asahi Kasei Corporation; for example, H7650 and G633.

[0077] The silicone resin different from the acrylic silicone resin is not particularly limited and may be synthesized by a conventionally known synthesis method, or may be a commercially available product, and for example, it is preferable to use a silicone resin emulsion or silicone resin dispersion in which polyorganosiloxanes obtained by polycondensation of an alkoxysilane compound or its condensate are emulsified, dispersed, or dissolved in an aqueous medium, and two or more types can also be used in any combination. Examples of such commercially available products include the following: Usable products containing silicone copolymers include Chaline E-370, Chaline E-371, Chaline LC-190, Chaline FE-230N, Chaline FE-520, Chaline E-790, Chaline RU-911, Chaline 1807, Chaline 1815MP, Chaline 1817, and Chaline 1827 manufactured by Nissin Chemical Industry Co., Ltd., Crit KS-3705 manufactured by Taisei Fine Chemical Co., Ltd., Ceranate WHW-822, Ceranate WSA-1070, Ceranate SSA-3060, and Ceranate MFG-102 manufactured by DIC Corporation, KP-578 manufactured by Shin-Etsu Chemical Co., Ltd., and AE980 and AE982 manufactured by E-TECH Co., Ltd. Usable products containing silicone resins include SILRES P2001, SILRES BS1042, and SILRES manufactured by Asahi Kasei Wacker Silicone Co., Ltd. BS45, SILRESBS1306, SILRESBS SMK1311.

[0078] In weather-resistant paints, in addition to the above-mentioned acrylic silicone resin and a silicone resin different from the acrylic silicone resin, it is also possible to use, as weather-resistant coating film components, one or more resins selected from the group consisting of acrylic resin, acrylic-styrene resin, styrene resin, polyester resin, urethane resin, fluororesin, vinyl acetate resin, and vinyl acetate-acrylic resin.

[0079] The weather-resistant coating material may further contain an additive selected from the group consisting of the above-described ultraviolet absorbers, antioxidants, light stabilizers, insect repellents, preservatives, extender pigments, coloring pigments, antifoaming agents, dispersants, pH adjusters, and viscosity adjusters. Specific examples include the same additives that may be contained in the impregnating material.

[0080] Unlike impregnating materials, weather-resistant paints can further contain water and / or solvents. Weather-resistant paints can also contain the above-mentioned additives in a state of being emulsified or dispersed in water or a solvent.

[0081] The weather-resistant coating material may contain various components other than those mentioned above, such as thickeners, film-forming aids, leveling agents, coupling agents, wetting agents, plasticizers, antifreeze agents, antifungal agents, anti-algae agents, antibacterial agents, adsorbents, fibers, crosslinking agents, anti-fouling agents, catalysts, etc.

[0082] The means for applying the weather-resistant paint to wood impregnated with the impregnating material is not particularly limited, but it can be applied, for example, in the same manner as the impregnating material.

[0083] Because the impregnating material does not contain a solvent, after application, the impregnating material that has soaked into the wood not only does not attack the weather-resistant paint film, but also fills the voids in the wood at a high density, preventing the weather-resistant paint from penetrating into the wood as described above and improving adhesion between the wood and the weather-resistant paint film.

[0084] The weather-resistant paint film thus obtained can retain the components contained in the impregnating material impregnated into the wood. Therefore, the water-repellent and waterproof properties of the silicon material contained in the impregnating material can be maintained for a long period of time. Furthermore, if the impregnating material contains additives, the effects of the additives contained in the impregnating material can also be maintained for a long period of time.

[0085] Furthermore, by forming a coating film on wood impregnated with an impregnating material, the wet color of the impregnating material can be improved, and the original texture of the wood can be exhibited.

[0086] This improvement in wet color cannot be achieved unless both an acrylic silicone resin and a silicone resin different from the acrylic silicone resin are used.

[0087] Furthermore, the application of two layers of an impregnating material containing a high concentration of silicon material and the above-mentioned weather-resistant paint, i.e., a hybrid multi-layer protective method consisting of a coating film of an impregnating material and a coating film of a weather-resistant paint, has never been considered before and was only made possible by the discovery of the present inventors.The effect of the present invention, which makes it possible to protect wood from deterioration over time for a long period of time without damaging the original texture of the wood, is an extremely remarkable effect that even a person skilled in the art could not have predicted.

[0088] [Hybrid wood protection paint kit] The hybrid wood protection paint kit of the present invention comprises: an impregnating material containing a silicon material at a concentration of 85.0% by weight or more and not containing water or a solvent; A weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin is applied to the wood impregnated with the impregnating material. It consists of:

[0089] The hybrid wood protection kit of the present invention can be used in the wood protection method described above, and therefore can protect wood from deterioration over time for a long period of time without damaging the original texture of the wood.

[0090] For details of the impregnating material and weather-resistant coating, please refer to the previous explanation.

[0091] [Wood protection impregnation material] The impregnating material for protecting wood of the present invention contains a silicon material at a concentration of 85.0% by mass or more, and is free of water and solvents.

[0092] An impregnating material for wood protection containing such a high concentration of silicon material has not been known until now. This impregnating material can be used in the wood protection method of the present invention. Therefore, when impregnated into wood, the impregnating material for wood protection of the present invention can maintain weather resistance for a long period of time. In addition, because it exhibits waterproofing and water-repellent effects, it can prevent wood from absorbing moisture, thereby imparting dimensional stability to the wood over time.

[0093] For details on wood preservative impregnations, please refer to the previous description of impregnations. [Example]

[0094] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the examples shown below.

[0095] (Examples 1 to 8, Comparative Examples 2 to 7) The components listed in Tables 1 and 2 below were mixed to prepare an impregnating material and a weather-resistant paint, respectively.

[0096] [Table 1]

[0097] Silicate Oligomer MS56: Methyl Silicate Oligomer (Mitsubishi Chemical Corporation) Ethyl silicate 40: Ethyl silicate oligomer (Tama Chemicals Co., Ltd.) (hydrolysis condensation product of tetraethoxysilane) Siloxane DOWSIL SR2402: Made by DOW BS BMK2102J: Asahi Kasei Wacker Silicon Alkylsilane KBE-3063: Hexyltriethoxysilane (Shin-Etsu Chemical Co., Ltd.) Acrylic silicone resin Acronal 7064: manufactured by BASF Silicone resin Chaline FE-230N: (Shin-Etsu Chemical Co., Ltd.) Silicone resin Chaline E-370: (Shin-Etsu Chemical Co., Ltd.)

[0098] [Table 2]

[0099] Silicate Oligomer MS56: Methyl Silicate Oligomer (Mitsubishi Chemical Corporation) Ethyl silicate 40: Ethyl silicate oligomer (Tama Chemicals Co., Ltd.) (hydrolysis condensation product of tetraethoxysilane) Siloxane DOWSIL SR2402: Made by DOW BS BMK2102J: Asahi Kasei Wacker Silicon Alkylsilane KBE-3063: Hexyltriethoxysilane (Shin-Etsu Chemical Co., Ltd.) Acrylic silicone resin Acronal 7064: manufactured by BASF Silicone resin Chaline FE-230N: (Shin-Etsu Chemical Co., Ltd.) Silicone resin Chaline E-370: (Shin-Etsu Chemical Co., Ltd.)

[0100] [Wood protection] A cedar board (sanded with sandpaper #180) was prepared as the wood to be protected.

[0101] (Examples 1 to 8, Comparative Examples 2 to 7) In all cases except Comparative Example 5, the previously prepared impregnating material was applied to a cedar board and allowed to soak. Next, in all cases except Comparative Example 6, after 16 hours of penetration at room temperature, the previously prepared weather-resistant coating was applied to a cedar board impregnated with the impregnating material or a cedar board not impregnated with the impregnating material (Comparative Example 5) to obtain a coating film. In this way, samples of Examples 1 to 8 and Comparative Examples 2 to 7 were prepared.

[0102] (Comparative Example 1) As a blank with no wood protection, a cedar board (sanded with sandpaper #180) without any coating was used as a sample of Comparative Example 1.

[0103] Each sample was evaluated according to the following procedure, and the results are shown in Tables 3 and 4 below.

[0104] Finished color and appearance: Visually observed and evaluated. Appearance of coating film: The finish of the coating film was evaluated by touching with the fingers. Water absorption and water resistance: Water absorption rate: Coated wood was immersed in water for 168 hours, and the water absorption rate was calculated from the change in wood weight before and after immersion. Wood appearance: The wood appearance after immersion in water for 168 hours was visually observed. Wet, cold, and heat cycle resistance: Coated wood was immersed in water for 18 hours, then frozen in a -20°C atmosphere for 3 hours, and then dried in a 70°C atmosphere for 3 hours. This cycle was repeated 10 times, and the appearance of the wood was visually inspected.

[0105] Accelerated weathering test: A metal halide accelerated weathering test was carried out. (irradiation + rain irradiance 1500W / m 2 BP63±3℃ RH50±5%) Visually inspect the wood and coating for cracks, defects, swelling, etc. The water repellency of the coating film is evaluated by spotting water on the coating film after the test and visually inspecting the water repellency. Measure the 60° gloss with a gloss meter, and calculate the gloss retention rate using the base material before the test as the reference value. Measure the L, a, and b values ​​with a color difference meter, and calculate ΔE using the base material before the test as the reference value.

[0106] [Table 3]

[0107] [Table 4] *a: Evaluation not carried out due to cracks in the wood

[0108] *1 Finished color appearance 〇: No significant change in wood color before and after painting △: There is a slight change in the wet color of the wood before and after painting. ×: There is a significant change in the color of the wood, such as wet color, before and after painting. *2 Water absorption rate after immersion in water (168 hours) 〇: Less than 7.5% △: 7.5% to less than 15% ×: 15% or more *3 Appearance of wood after water immersion (168 hours) 〇: No water staining of wood; △: Water staining of wood with wet color; ×: Water staining of wood with strong wet color *4 Repeated heat and humidity test: 〇: No change in wood appearance; ×: Cracks reaching the wood *5 Appearance of wood and coating film 〇: No significant abnormalities or changes; △: Slight abnormalities such as cracks, swelling, and whitening of the coating film were observed in a small area, but no significant abnormalities affecting the wood were observed; ×: Significant peeling and cracking of the coating film occurred, leading to cracks and damage to the wood *6 Water repellency of coating film: 〇: Initial (water repellency equal to or greater than that of untested specimen; △: Water repellency but absorption; ×: No water repellency *7 60° gloss retention 〇: 80% or more △: 60% or more but less than 80% ×: Less than 60% *8 Color difference ΔE 〇: Less than 5.0 △: 5.0 or more but less than 10.0 ×: 10.0 or more

[0109] Examples 1 to 8 are examples in which the wood protection method of the present invention was carried out using a hybrid wood protection paint kit of the present invention containing the wood protection impregnation material of the present invention. As shown in Table 3, the samples of Examples 1 to 8 suppressed water absorption and wood cracking and other deformation without damaging the wood quality, and demonstrated wood protection effects with high gloss retention and small ΔE in accelerated weathering tests.

[0110] In particular, Example 7, which used a hydrolysis condensate of tetraethoxysilane, exhibited particularly excellent water absorption inhibition and water repellency. This result is thought to be due to the fact that in Example 7, the hydrolysis condensate of tetraethoxysilane, which has a high silicon content and a molecular weight distribution, more appropriately penetrates deep into the interior, fine details, and gaps of the wood and reacts and hardens, and the weather-resistant paint film is able to firmly adhere to the wood via the silicate impregnating agent, which is made of a silicon material that is more resistant to UV degradation and other factors than organic materials. As a result, water penetration, a factor that causes wood deterioration, is significantly inhibited, and the wood's protective effect is significantly enhanced.

[0111] On the other hand, the unpainted wood of Comparative Example 1 was accompanied by intense water absorption, and the wood cracked and deteriorated significantly.

[0112] In Comparative Examples 2 to 4, the content of silicon material in the impregnating material was less than 85%. In Comparative Example 2, the water absorption rate was high. In Comparative Examples 3 and 4, deterioration of the coating film progressed in an accelerated weather resistance test.

[0113] In Comparative Example 5, in which no impregnating material was applied, the water absorption rate was high.

[0114] In Comparative Example 6, in which no weather-resistant coating film was applied, the weather resistance was significantly reduced.

[0115] In Comparative Example 7, the impregnating material was diluted with a solvent, and the amount of components was reduced, resulting in an increased water absorption rate. [Industrial Applicability]

[0116] The wood protection method of the present invention involves impregnating wood to be protected with a solvent-free impregnating material containing a silicon material at a concentration of 85.0% by mass or more, thereby imparting sufficient water repellency and waterproofing to the wood and providing dimensional stability over time. Furthermore, in the wood protection method of the present invention, a coating film is formed on the wood impregnated with the impregnating material using a weather-resistant paint containing an aqueous organic acrylic silicone resin and an inorganic modified silicone resin, thereby preventing the components contained in the impregnating material from escaping from the wood and maintaining the wood's original texture. Therefore, the wood protection method of the present invention can protect wood from deterioration over time for a long period of time without damaging the wood's original texture.

[0117] Furthermore, the hybrid wood protection paint kit of the present invention can be used, for example, in the above-mentioned wood protection method, thereby making it possible to protect wood from deterioration over time for a long period of time without damaging the original texture of the wood.

[0118] Furthermore, the impregnated wood protection material of the present invention can impart sufficient water repellency and waterproofing to wood, and can also impart dimensional stability to wood over time.

[0119] In other words, the present invention is extremely useful for protecting wood.

Claims

1. 1. A wood protection method comprising: A step of impregnating wood to be protected with an impregnating material containing a silicon material at a concentration of 85.0% by mass or more and containing no water or solvent; a step of applying a weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin to the wood impregnated with the impregnating material to form a coating film; A method for protecting wood, comprising:

2. 2. The wood protection method according to claim 1, wherein the silicon material comprises at least one selected from the group consisting of hydrolysates of tetraalkoxysilanes and / or condensation compounds thereof, and modified products thereof.

3. 2. The wood protection method according to claim 1, wherein the impregnating material further comprises an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a viscosity adjuster, and a coating component for the impregnating material.

4. 2. The wood protection method according to claim 1, wherein in the weather-resistant paint, the weight ratio of the content of the acrylic silicone resin to the content of the silicone resin different from the acrylic silicone resin is 90 / 10-50 / 50.

5. 2. The wood protection method according to claim 1, wherein the weather-resistant paint further comprises an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a solvent, a viscosity adjuster, and a weather-resistant coating component.

6. an impregnating material containing a silicon material at a concentration of 85.0% by weight or more and not containing water or a solvent; A weather-resistant paint containing an acrylic silicone resin that can be used in water-based paints and a silicone resin that can be used in water-based paints and is different from the acrylic silicone resin is applied to the wood impregnated with the impregnating material. A hybrid wood protection paint kit consisting of:

7. The hybrid wood protection paint kit according to claim 6, wherein the silicon material comprises at least one selected from the group consisting of hydrolysates of tetraalkoxysilanes and / or their condensation compounds, and modified products thereof.

8. 7. The hybrid wood protection paint kit according to claim 6, wherein the impregnating material further comprises an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, an antiseptic, an extender pigment, a coloring pigment, an antifoaming agent, a dispersant, a pH adjuster, a viscosity adjuster, and a coating component for the impregnating material.

9. 7. The hybrid wood protection paint kit according to claim 6, wherein in the weather-resistant paint, the weight ratio of the content of the acrylic silicone resin to the content of the silicone resin different from the acrylic silicone resin is 90 / 10-50 / 50.

10. The hybrid wood protection paint kit according to claim 5, wherein the weather-resistant paint further contains an additive selected from the group consisting of an ultraviolet absorber, an antioxidant, a light stabilizer, an insect repellent, a preservative, an anti-algae agent, an anti-fungal agent, an extender pigment, a coloring and gloss-adjusting pigment, an antifoaming agent, a dispersant, a pH adjuster, a solvent, a viscosity adjuster, and a weather-resistant coating component.

11. An impregnating material for protecting wood, which contains silicon materials at a concentration of 85.0% by mass or more and is free of water and solvents.

12. 12. The wood protecting impregnating material according to claim 11, wherein the silicon material comprises at least one selected from the group consisting of hydrolysates of tetraalkoxysilanes and / or condensation compounds thereof, and modified products thereof.

Images