JP2002097086A - Inorganically coated product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new inorganically coated product which is an inorganically coated product such as a thick roof tile and the like and which has excellent coating film adhesion on its kerf and good weather resistance and long-term durability. SOLUTION: This is a coated product whose kerf of ceramic base inorganic material has a sequential formation of <I> acrylic silicone coating base film and <II> silicon alkoxide coating base inorganic film or has an inclusion of <III> acrylic emulsion coating organic film between films <1> and <2>.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic coated product. More specifically, the present invention relates to an inorganic painted product such as a thick tile having a wood-grained painted surface having excellent long-term durability.

[0002]

2. Description of the Related Art Conventionally, ceramic-based inorganic products such as tiles and wall materials have been improved in water resistance, weather resistance, etc. by applying a coating to the surface thereof. In the case of light-weight thick roof tiles, a water-repellent agent is applied to the kiguchi surface to prevent frost damage and weather resistance due to water penetration from the kiguchi surface. It has been practiced to provide an organic coating film on a surface layer.

[0003]

However, in the case of a conventional inorganic paint product, which is also applied to the wood edge of a thick tile such as a thick tile, a room temperature drying type water repellent such as an alkoxysilane-based material on the wood edge. In addition, there is a problem that the adhesion between the film and the organic coating film is not sufficient, peeling is likely to occur, and the weather resistance and long-term durability are not sufficient.

Accordingly, the invention of this application solves the conventional problems as described above, and is an inorganic coating product for thick tiles and the like, which is excellent in adhesion and weather resistance of a coating film on a wooden surface. It is an object of the present invention to provide a new inorganic coating product having good long-term durability.

[0005]

Means for Solving the Problems The invention of this application is to solve the above-mentioned problems. First, the following coating films <I><II> are sequentially applied to the kiguchi surface of ceramic-based inorganic products. A mineral-coated product characterized by being painted.

<I> Acrylic silicon-based coating film <II> Silicon alkoxide coating material-based inorganic coating Second, in the above-mentioned coated product, between the coating film <I> and the coating film <II><III> An inorganic coating product characterized by being provided with an organic coating film of an acrylic emulsion paint.

The invention of this application relates to the first or second invention described above. Thirdly, <II> a silicon alkoxide coating material-based inorganic coating film comprises the following component (A) together with a curing catalyst. An inorganic coated article characterized by being coated with a coating material mainly containing (B). (A) a general formula R ¹ _n SIX _4-n (wherein, R ¹ represents the same or different substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, n is an integer of 0 to 3, X represents a hydrolyzable group.) (B) Average composition formula R ² _a Si (OH) _b O _{(4-ab) / 2} (wherein, R ² is the same or different, substituted or unsubstituted carbon number) Represents a monovalent hydrocarbon group of 1 to 8, wherein a and b are respectively 0.2 ≦ a ≦ 2, 0.0001 ≦ b ≦ 3, a + b <4
Is a number that satisfies the relationship Fourth, <I> the acrylic silicone-based coating film contains a silicon compound having a hydrolyzable silyl group as a functional group, or contains an acrylic compound or resin modified with the compound. Providing inorganic paint products, characterized in that the paint is painted,
Fifth, the organic coating of <III> acrylic emulsion-based coating is characterized by being coated with a coating having an interface compatibility with the inorganic coating of <II> silicon alkoxide coating material. Sixth, a coating film having a thickness of <I> acrylic silicon-based coating film: 10 μm to 70 μm
m <II> Silicon alkoxide coating material-based inorganic coating:
2 μm to 10 μm <III> Acrylic emulsion-based organic coating film: 0 or an inorganic coating product in the range of 10 μm to 70 μm is provided.

Further, the invention of this application is, in a seventh aspect, any one of the above inorganic coating products, wherein the UV irradiation time is 15 minutes.
The present invention provides an inorganic coated product characterized in that no abnormality occurs in the coating film even at 0 hours. Eighthly, no abnormality occurs in the secondary adhesion of the coating film after 100 cycles of the freeze damage A method. To provide inorganic coatings.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention of this application has the features as described above, and embodiments thereof will be described below.

In the invention of this application, a ceramic inorganic material such as a thick roof tile is provided, which is provided with a coating on the lip end thereof. In order to suppress deterioration and improve weather resistance and long-term durability, a coating film having excellent coating film adhesion, weather resistance, and the like is configured as follows.

That is, the surface of the kiguchi surface is sequentially
The following coating films: <I> Acrylic silicon-based coating film <II> Silicon alkoxide coating material-based inorganic coating film is applied. Alternatively, coating <I> and coating <II
<I> Acrylic silicon-based coating film, <II> Silicon alkoxide coating material-based inorganic coating <III>> Acrylic emulsion-based organic coating is applied.

In the present invention, the target substrate is
The composition and use of the ceramic-based inorganic product may be various. For example, the composition may be various types such as cement type or gypsum type, and the application may be various types such as tiles, accessories, wall materials and the like. Above all, a thick article having a relatively large surface area on the tip surface is a main object of the present invention.

[0013] <I> Acrylic silicone paint film has good adhesion to ceramic inorganic material as a base material and <II> silicon alkoxide coating material inorganic film as an upper layer, or <As intermediate coating layer
III> Acrylic emulsion paint A paint that provides good adhesion to an organic coating film is used.

Such a paint is a reactive composition of a silicon compound having a hydrolyzable silyl group together with a silicon group as a functional group and an acrylic compound, an acrylic oligomer or an acrylic resin, or modified by the silicon compound. Organic solvent-based paints mainly containing acrylic compounds or their oligomers and resins are mentioned as typical examples. A commercially available product or a synthesized product may be used.

The acrylic silicone-based paint using the above-mentioned silicon compound having a hydrolyzable silyl group is preferably of a heat-drying / curing type. The heating temperature in this case is, for example, in the range of 60 ° C to 110 ° C. By using such a heat-drying / curing type acrylic silicone paint, the hydrolyzed silyl group is strongly bonded to and adhered to the ceramics-based inorganic base material. Strength and water resistance will be much higher. Also, it adheres to the <II> silicon alkoxide coating material-based inorganic coating as the upper layer.

When the organic coating film of the above <III> is used as the intermediate coating layer, the adhesion becomes good due to the affinity of the organic coating film with the acrylic group. This <I> paint for an acrylic silicone paint film, that is, an acrylic silicone paint, is preferably applied to the wood opening surface at an application amount of 30 to 50 g / m ² as a solid content (after drying). I do. The thickness of the cured coating film is 10 μm to 70 μm
It is preferable that When the solid content is less than 30 g / m ² and the film thickness is less than 10 μm, the interlayer adhesion is not sufficient, and conversely, the solid content exceeds 50 g / m ² and 70 μm
When it exceeds the value, the adhesiveness tends to decrease.

The <II> silicon alkoxide coating material of the present invention is characterized by forming an inorganic coating film. Such silicon alkoxide coating materials include those already proposed by the inventors of the present application for various methods and applications.

Such an inorganic coating film, that is, an inorganic coating film has excellent weather resistance and adhesiveness as such, and is applied to the surface of a tile or the like via an organic coating film by the present inventors. Has also been proposed. Actually, a coating film made of a silicon alkoxide coating material not only has good appearance design, but also has good weather resistance and durability.

However, with respect to the kiguchi surface of ceramic-based inorganic products, there is no known example in which such a silicon alkoxide coating material is applied. On the other hand, it is not sufficient to apply the coating via an organic coating film on the wood surface. One reason for this is that the Kiguchi surface has a different structure from that of a flat surface such as a thick roof tile. For example, the flat surface is often relatively dense as the surface to be pressed during press molding, whereas the kiguchi surface is different from this, and the cut surface or cutting surface is often less. Because there is no.

Therefore, in the present invention, the <II> silicon alkoxide coating material-based inorganic coating is formed on the <I> coating as described above. Alternatively, after an <III> organic coating film is provided as an intermediate coating layer on the <I> coating film, a <II> silicon alkoxide coating material-based inorganic coating film is formed thereon.

Particularly, in the invention of this application, the presence of an organic solvent-based <I> acrylic silicon-based coating film is important, and the required durability cannot be obtained without this coating film. In addition, the <I> acrylic silicon-based coating film must have the above-mentioned <II> and further <III> laminated film.

The silicon alkoxide coating material is more preferably a coating material mainly containing the following components (A) and (B) together with the curing catalyst as described above. (A) a general formula R ¹ _n SIX _4-n (wherein, R ¹ represents the same or different substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, n is an integer of 0 to 3, X represents a hydrolyzable group.) (B) Average composition formula R ² _a Si (OH) _b O _{(4-ab) / 2} (wherein, R ² is the same or different, substituted or unsubstituted carbon number) Represents a monovalent hydrocarbon group of 1 to 8, wherein a and b are respectively 0.2 ≦ a ≦ 2, 0.0001 ≦ b ≦ 3, a + b <4
Is a number that satisfies the relationship The component (A) is a hydrolyzable organosilane having a hydrolyzable group X, and specific examples of R ^{1 in} the formula include methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, and the like. Alkyl groups such as cyclopentyl and cyclohexyl; aralkyl groups such as 2-phenylethyl, 2-phenylpropyl and 3-phenylpropyl; aryl groups such as phenyl and tolyl; alkenyl groups such as vinyl and allyl; Chloromethyl,
halogen-substituted hydrocarbon groups such as γ-chloropropyl and 3,3,3-trifluoropropyl; substitution with γ-methacryloxypropyl, γ-glycidoxypropyl, 3,4-epoxycyclohexylethyl, γ-mercaptopropyl and the like And a hydrocarbon group. Among these, an alkyl group having 1 to 4 carbon atoms or a phenyl group is preferable in terms of ease of synthesis and availability.

Examples of the hydrolyzable group X include an alkoxy group, an acetoxy group and an oxime group [—ON = C (−
R ')-R], an enoxy group [-OC (-R) = C (-
R ")-R '] amino group, aminoxy group [-ON (-
R) -R '), an amide group [-N (-R')-CO-R]
(Where R, R ′ and R ″ are, for example, each a hydrogen atom or a monovalent hydrocarbon group), etc. An alkoxyl group is preferred because of its availability and easy preparation.

Examples of such a hydrolyzable organosilane include mono-, wherein n in the above general formula is an integer of 0 to 3,
Gly, tree, and tetrakilic allyloxysilanes, acetoxysilanes, oxime silanes, enoxysilanes, aminosilanes, aminoxysilanes, amidosilanes and the like can be mentioned. Alkoxysilanes are preferred because they are easy to handle and easy to prepare.

Particularly, tetramethoxysilane, tetraethoxysilane and the like are exemplified as n = 0 tetraalkoxysilane, and methyltrimethoxysilane, methyltriethoxysilane and methyltrimethoxysilane are exemplified as n = 1 organotrialkoxysilane. Triisopropoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane,
3,3,3-trifluoropropyltrimethoxysilane and the like can be exemplified. Examples of the diorganodialkoxysilane of n = 2 include dimethyldimethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, and methylphenyldimethoxysilane, and the like. Is trimethylmethoxysilane, trimethylethoxysilane, trimethylisopropoxysilane,
Dimethylisobutylmethoxysilane and the like can be exemplified. Further, an organosilane compound generally called a silane coupling agent is also included in the alkoxysilanes.

In the hydrolyzable organosilane represented by the above general formula, at least 50 mol% of n is 1
It is preferably a functional one, more preferably 6
It is at least 0 mol%, most preferably at least 70 mol%. If the trifunctional compound represented by n = 1 is less than 50 mol%, sufficient coating film hardness may not be obtained, and dry curability may be poor.

The component (A) has a pH value of 2.0 to 7.0, preferably 2.5 to 6.5, more preferably 3.0 in order to obtain stable performance over a long period of time. It is good to set it to 6.0. When the pH is out of this range, the long-term performance of component (A) may be remarkably reduced particularly when the amount of water used is 0.3 mol or more per 1 mol of hydrolyzable group (X). .
When the pH of the component (A) is out of this range, if it is more acidic than this range, it may be adjusted by adding a basic reagent such as ammonia or ethylenediamine. It may be adjusted by using an acidic reagent such as acetic acid, nitric acid or acetic acid. However, the adjustment method is not particularly limited.

The polyorganosiloxane having a silanol group of the component (B) is an important component that characterizes the present invention. In the average composition formula of the component (B), R ² may be the same as R ¹ described above. Preferably, R ² is an alkyl group having 1 to 4 carbon atoms, a phenyl group, a vinyl group, or γ. A substituted hydrocarbon group such as a glycidoxypropyl group, a γ-methacryloxypropyl group, a γ-aminopropyl group, a 3,3,3-trifluoropropyl group, and more preferably a methyl group or a phenyl group. In the above formula,
a and b are numbers that satisfy the above relationship, respectively.
Is less than 0.2 or b exceeds 3, there are disadvantages such as cracks in the cured film, and a exceeds 2 and b
Is less than 0.0001, curing does not proceed favorably.

As the polyorganosiloxane having such a silanol group, for example, one or two or more of methyltrichlorosilane, dimethyldichlorosilane, phenyltrichlorosilane, diphenyldichlorosilane, and corresponding alkoxysilanes are known. It can be obtained by hydrolyzing with a large amount of water according to the method. When a polyorganosiloxane having a silanol group is hydrolyzed by a known method using alkoxysilane, a small amount of an unhydrolyzed alkoxyl group may remain. In other words, a polyorganosiloxane in which a silanol group and a trace amount of an alkoxyl group coexist may be obtained. In the present invention, such a polyorganosiloxane can be used.

The curing catalyst as a component of the silicon alkoxide-based coating material promotes a condensation reaction between the components (A) and (B) to cure the coating. Examples of such a catalyst include, but are not particularly limited to, metal salts of carboxylic acids such as alkyl titanates, tin octylate, dibutyltin dilaurate, dioctyltin dimaleate; dibutylamine-2-hexoate, dimethylamine acetate, Amine salts such as ethanolamine acetate; quaternary ammonium salts of carboxylic acids such as tetramethylammonium acetate; amines such as tetraethylenepentamine; N-β-aminoethyl-γ-aminopropyltrimethoxysilane; N-β- Aminoethyl-γ
Amine silane coupling agents such as -aminopropylmethyldimethoxysilane; acids such as p-toluenesulfonic acid, phthalic acid and hydrochloric acid; aluminum compounds such as aluminum alkoxide and aluminum chelate; alkali metal hydroxides such as potassium hydroxide; Titanium compounds such as tetraisopropyl titanate, tetrabutyl titanate, and titanium tetraacetylacetonate; halogenated silanes such as methyltrichlorosilane, dimethyldichlorosilane, and trimethylmonochlorosilane; However, other than these catalysts, any catalyst can be used as long as it is effective for promoting the condensation reaction between the component (A) and the component (B), and there is no particular limitation.

The mixing ratio of the component (A) and the component (B) is such that the total amount of the component (A) and the component (B) is 100 parts by weight, and the component (B) is 1 to 99 parts by weight of the component (A). ) 9
9 to 1 part by weight, more preferably the component (A) 5 to 9
95 to 5 parts by weight of component (B) to 5 parts by weight, particularly preferably 10 to 90 parts by weight of component (A) to component (b)
90 to 10 parts by weight. When the amount of the component (A) is less than 1 part by weight, the curability at room temperature is inferior, and sufficient film hardness cannot be obtained. On the other hand, when component (A) exceeds 99 parts by weight,
Curability may be unstable and a good coating film may not be obtained.

The addition amount of the curing catalyst is preferably 0.0001 to 10 parts by weight, more preferably 0.0005 to 8 parts by weight, based on 100 parts by weight of the total of the components (A) and (B).
Parts by weight, particularly preferably 0.0007 to 5 parts by weight. If the amount is less than 0.0001 parts by weight, the composition may not be cured at room temperature. If the amount exceeds 10 parts by weight, heat resistance and weather resistance may be deteriorated.

The hydrolyzable group of the component (A) and the silanol group of the component (B) undergo a condensation reaction at room temperature or at a low temperature (for example, at a temperature of 100 ° C. or lower) in the presence of a curing catalyst to form a cured film. . Therefore, unlike a moisture-curable coating composition, the silicon alkoxide-based coating material used in the present invention is hardly affected by temperature even when cured at room temperature. On the other hand, a heat treatment can promote a condensation reaction to form a cured film.

In the silicon alkoxide-based coating material, in addition to the above-mentioned components, various coloring agents, fillers other than the above-mentioned silica sol (inorganic fillers such as alumina sol and fumed silica), a diluting solvent, One or more of various additives such as an agent, a surfactant, and an ultraviolet absorber may be contained. The diluting solvent is not particularly limited, and examples thereof include alcohols such as methanol, ethanol, and isopropanol (also referred to as IPA); and cellosolves such as ethylene glycol monomethyl ether, methyl cellosolve, ethyl cellosolve, and butyl cellosolve. These may be used alone or in combination of two or more. In combination with these hydrophilic organic solvents, toluene, xylene, ethyl acetate, butyl acetate, methoxyethyl ketone, methyl isobutyl ketone, methyl ethyl ketone oxime and the like can also be used.

The silicon alkoxide coating material of the present invention may be used as a mixture of colloidal silica and the above-mentioned hydrolyzable organosilane of the component (A) in order to increase the hardness of the cured coating film.

As such colloidal silica, water-dispersible or non-aqueous organic solvent dispersible colloidal silica such as alcohol can be used. Generally, such a colloidal silica dispersion contains 20 to 50% by weight of silica as a solid content, and the silica content can be determined from this value. Also, when using water-dispersible colloidal silica, water present as a component other than solid content,
It can be used for the hydrolysis of the hydrolyzable organosilane of the component (A). These are usually made from water glass, but such colloidal silica dispersions are readily available commercially.

The colloidal silica dispersed in an organic solvent is
It can be easily prepared by replacing the water of the water-dispersible colloidal silica with an organic solvent. Such an organic solvent-dispersed colloidal silica can be easily obtained as a commercial product similarly to the water-dispersible colloidal silica.
The type of organic solvent in which the colloidal silica is dispersed is, for example, methanol, ethanol, isopropanol,
lower aliphatic alcohols such as n-butanol and isobutanol; ethylene glycol derivatives such as ethylene glycol, ethylene glycol monobutyl ether and ethylene glycol monoethyl ether; derivatives of diethylene glycol such as diethylene glycol and diethylene glycol monobutyl ether; and diacetone alcohol. Can be mentioned. These may be used alone or in combination of two or more. In combination with these hydrophilic organic solvents, toluene, xylene, ethyl acetate, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone,
Methyl ethyl ketoxime and the like can also be used. Component (A) can contain colloidal silica in the range of 5 to 95% by weight. More preferably, it is in the range of 10 to 90% by weight, most preferably 20 to 85% by weight.
If the content is less than 5% by weight, a desired coating hardness cannot be obtained, and if it exceeds 95% by weight, it becomes difficult to uniformly disperse the silica, and the component (A) gels. May be invited.

The silica-dispersed oligomer can be obtained by partially hydrolyzing the hydrolyzable organosilane of the component (A) in water-dispersed colloidal silica or organic solvent-dispersed colloidal silica. This can also be used as a paint as a composition with the component (B) and the curing catalyst. The amount of water used for the hydrolyzable organosilane is 0.001 to 1 mol of the hydrolyzable group (X).
~ 0.5 mol is preferred. If the amount is less than 0.001 mol, a sufficient partial hydrolyzate cannot be obtained, and if it exceeds 0.5 mol, the stability of the partial hydrolyzate may deteriorate. The method of partially hydrolyzing is not particularly limited, but the hydrolyzable organosilane is mixed with colloidal silica,
A necessary amount of water may be added and blended. At this time, the partial hydrolysis reaction proceeds at room temperature. You may heat to 60-100 degreeC in order to accelerate a partial hydrolysis reaction. Furthermore, for the purpose of accelerating the partial hydrolysis reaction, hydrochloric acid, acetic acid, halogenated silane, chloroacetic acid, citric acid, benzoic acid, dimethylmalonic acid, formic acid, propionic acid, glutaric acid, glycolic acid, maleic acid, malonic acid, Organic or inorganic acids such as toluenesulfonic acid and oxalic acid may be used as the catalyst.

In the inorganic coated product of the invention of this application, the coating film of the above <II> is formed by the silicon alkoxide coating material as described above. In this case, the coating amount of the silicon alkoxide coating material is as solid content. The thickness is preferably in the range of 3 to 10 g / m ² , and the thickness after coating is preferably 2 to 10 μm.
If the thickness is less than 2 μm, it becomes difficult to obtain the required durability. If it exceeds 10 μm, the adhesion tends to decrease.

The curing temperature is preferably 10 to 15
The temperature is in the range of 0 ° C, more preferably 60 to 110 ° C. As for the coating film <II> using the silicon alkoxide coating material as described above,
An intermediate coating layer <III> acrylic emulsion-based organic coating film may be provided.

The provision of the organic coating further improves long-term durability. <III> Acrylic emulsion paint An organic paint that forms an organic paint film is one that improves interlayer adhesion between the underlying <I> acrylic silicone paint film and <II> silicon alkoxide coating material-based inorganic paint film. Is used. As such a paint, a paint mainly composed of an acrylic resin and commercially available as an aqueous emulsion paint, or a paint prepared from an emulsion is used. Above all, as the acrylic emulsion-based coating material in this case, a coating material having an interface compatibility with the upper layer <II> silicon alkoxide coating material-based inorganic coating film is preferably used. Due to this compatibility,
The interlayer adhesion with the upper inorganic coating film is excellent. <
III> Acrylic Emulsion Paint The organic coating film preferably has a thickness in the range of 10 μm to 70 μm. If it is less than 10 μm or more than 70 μm, the adhesion will be reduced.

In the present invention, the coating film <I><
Various coating methods may be used for forming II><III>. Various methods such as color coating, spray coating, roll coating and the like are appropriately selected in consideration of the area of the wood edge.

<I><II> or <I><
By adopting the structure of the coating film of II><III>, it is possible to effectively suppress the intrusion of water at the mouth of the ceramic-based inorganic product, and to greatly improve long-term durability.

According to this application, more specifically, an inorganic coating product characterized in that no abnormality occurs in the coating film even when the UV irradiation time is 150 hours, and a method of cooling damage A method 100
There is provided an inorganic coated article characterized in that no abnormality occurs in the secondary adhesion of the coating film after the cycle.

The weather resistance and adhesion in this case were evaluated by the following methods. <Adhesion> The cycle of freezing in water -13 ° C and thawing in water + 5 ° C is repeated.

The freezing step including the temperature gradient: about 3 hours, the thawing step: about 1 hour, and one cycle within about 4 hours. After 100 CY of this cycle, a secondary adhesion test is performed using a cloth tape. <Weather resistance> UV irradiation time was evaluated up to 150 hours irradiation with an iSuper UV tester.

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

[0048]

EXAMPLE A ceramic cement tile as a base material is used as a base material, and a commercially available silicone compound containing a hydrolyzable silicon group and a silicon group is used as an acrylic silicon paint in Examples 1 to 3 with respect to the cut surface. And a silicon alkoxide coating material prepared using methyltrimethoxysilane (component A), a hydrolyzate of methyltriisopropoxysilane (component B), and an aqueous hydrochloric acid solution as a curing catalyst. Used and inorganic coating was performed.

In Examples 1 and 3, organic coating was performed using a commercially available acrylic emulsion paint between the acrylic silicone paint and the silicon alkoxide inorganic coating.

On the other hand, in Comparative Examples 1 to 3, an alkoxysilane-based water-repellent consisting of an alkyltrimethoxysilane having an alkyl group having 7 to 8 carbon atoms was used as a water-repellent without using the acrylic silicone-based paint. Agent was used.

The adhesion and weather resistance of a coated article having a coating film formed on a wooden surface with the above-described paint were evaluated. The evaluation method was as described above. The results are shown in Table 1.

[0052]

[Table 1]

From Table 1, it can be seen that in Examples 1 to 3 of the present invention, both the adhesion and the weather resistance were good, whereas in Comparative Examples, the performances were all low.

[0054]

As described in detail above, according to the invention of the present application, the present invention is an inorganic coating product for thick tiles and the like, which has excellent adhesion and weather resistance of a coating film on a wooden surface, and good long-term durability. It is possible to provide a new inorganic coating product.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view illustrating the configuration of a coating film on a woodcut surface of the present invention.

Claims (8)

[Claims] 1. An inorganic coated product characterized in that the following coating films <I> and <II> are sequentially applied to the tip of a ceramic inorganic product. <I> Acrylic silicon coating film <II> Silicon alkoxide coating material inorganic coating 2. The coated article according to claim 1, wherein the coating film <I>
<III> An inorganic coating product, wherein an organic coating of an acrylic emulsion paint is disposed between the coating and <II>. 3. <II> The silicon alkoxide coating material-based inorganic coating film comprises the following components (A) together with a curing catalyst.
3. The inorganic coated article according to claim 1, wherein the article is coated with a coating material mainly containing (B). (A) a general formula R ¹ _n SIX _4-n (wherein, R ¹ represents the same or different substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, n is an integer of 0 to 3, X represents a hydrolyzable group.) (B) Average composition formula R ² _a Si (OH) _b O _{(4-ab) / 2} (wherein, R ² is the same or different, substituted or unsubstituted carbon number) Represents a monovalent hydrocarbon group of 1 to 8, wherein a and b are respectively 0.2 ≦ a ≦ 2, 0.0001 ≦ b
≦ 3, a + b <4. ) 4. <I> Acrylic silicone paint film
2. A coating material containing a silicon compound having a hydrolyzable silyl group as a functional group, or a coating containing an acrylic compound modified with the compound, an oligomer thereof, or a resin. Inorganic coating product of any one of 3 to 3. 5. The organic coating film of <III> acrylic emulsion-based coating is characterized in that a coating material having an interface compatibility with the inorganic coating film of <II> silicon alkoxide coating material is applied. The inorganic coating product according to any one of claims 1 to 4, wherein 6. A coating film having a thickness of <I> an acrylic silicon-based coating film: 10 μm to 70 μm
m <II> Silicon alkoxide coating material-based inorganic coating:
2 μm to 10 μm <III> Acrylic emulsion-based organic coating film: 0, or in the range of 10 μm to 70 μm. 7. The inorganic coated product according to claim 1, wherein no abnormality occurs in the coating film even when the UV irradiation time is 150 hours. 8. The inorganic coated product according to claim 1, wherein the secondary adhesion of the coating film after 100 cycles of the freezing damage A method does not occur.