JP5585906B2 - Aqueous composition for forming a flexible coating - Google Patents

Description

  The present invention relates to an aqueous composition containing calcium hydroxide as a film-forming component and forming a flexible film, and more particularly to an aqueous composition forming a film having flexibility and stretchability. Moreover, this invention relates to the sheet | seat or board prepared by apply | coating the said aqueous composition to the surface of a sheet-like or board-like base material, and its manufacturing method.

  Stucco and dolomite plaster have been known for a long time as an air-hard coating material mainly composed of lime. These coating materials have excellent functions such as moisture control (hygroscopicity and moisture release), antifungal properties, antibacterial properties, deodorizing properties, and fireproofing properties in addition to a calm and solid finish. Syndrome and influenza are now a problem, and it is being reviewed again as a coating material for improving the environment.

  However, plaster and dolomite plaster have a drawback that the shrinkage at the time of drying and curing is large and they are not flexible, so that the dried coating film is easily cracked and brittle. For this reason, the conventional plaster and dolomite plaster have a thickness of 1 to 2 mm or less using a material blended with fiber materials such as susa (hemp, cocoon, paper, etc. cut short) to prevent cracking. An application method is employed in which thin coating, once drying and curing, and then top coating from the top are repeated to finish to a desired thickness. Furthermore, in order to prevent cracking, a high level of craftsmanship is required to average the drying shrinkage of the coating while adjusting the level of pressing of the iron during overcoating. For this reason, the construction of plaster and dolomite plaster required a skillful technique and a long construction period, and as a result, there was a problem that the cost was great.

  As a method conventionally proposed as a method for preventing cracks in plaster and dolomite plaster, for example, as a coating composition, a lime-based plaster composition containing slaked lime and / or dolomite plaster, styrene butadiene rubber latex, welan gum and a surfactant. (Patent Document 1) using a product, a method using a composition containing silica sand, synthetic resin, susa, clay component, dispersant, cellulosic thickener and antifoaming agent in a specific ratio to slaked lime (Patent Document 1) 2) A method of using a composition containing aggregate, synthetic resin binder, and wheat fiber at a specific ratio in slaked lime (Patent Document 3), lime-based plaster, ethylenically unsaturated dicarboxylic acid monomer and vinyl monomer Lime-based plaster set containing lime-based plaster modifier containing latex obtained by emulsion polymerization of polymer A method of using a product (Patent Document 4) and a method of adding a compound having a chelating action to calcium ions (chelate compound) (Patent Document 5) in a coating composition containing lime as a coating component it can. Especially, the method described in patent document 5 is effective in preventing the crack of the film formed from the coating composition containing lime, such as plaster and dolomite plaster, and a lime type finish coating material and a lime type paint. In addition to being excellent, it is useful as a method for reducing the thixotropic flow properties of lime. In addition, a method of blending a polar amino acid as a method for imparting crack resistance (crack resistance) that can withstand forced drying in an industrial line to a coating composition containing lime as a film component has also been proposed (Patent Document 6). ~ 7).

  In addition, plaster and dolomite plaster are not suitable for use in places where they come into contact with water such as outer walls and bathrooms because they are poor in water resistance and waterproofness. In order to improve the water resistance and water resistance of plaster and dolomite plaster, conventionally, vegetable oil such as rapeseed oil and soybean oil or fish oil such as whale oil and sardine oil is mixed with the material, or oil is applied to the surface where plaster or dolomite plaster is applied. Alternatively, a water repellent is applied. However, in such a case, there is a problem that oil floating or shine occurs on the surface, and the texture specific to plaster is impaired.

  Furthermore, although the surface of the coating film formed with plaster or dolomite plaster absorbs carbon dioxide in the atmosphere and self-cures, its hardness is relatively high, but its durability against friction (friction resistance) is not very good and rubs. Also, there is a problem that the portion is worn and shining occurs and becomes uneven.

JP 2003-171167 A JP 2001-192255 A JP 2003-306614 A JP 2002-12460 A JP 2006-240981 A JP 2008-115375 A JP 2008-115376 A

  An object of this invention is to provide the aqueous composition which contains the calcium hydroxide as a film formation component which eliminated the said conventional problem regarding a plaster or a dolomite plaster. More specifically, an object of the present invention is to provide an aqueous composition that forms a film with improved flexibility and stretchability so that the film does not crack even when the base substrate is bent or deformed. And Moreover, an object of this invention is to provide the said aqueous composition which forms the film excellent in water resistance and friction resistance.

  Furthermore, this invention aims at providing the manufacturing method of the various sheet | seat or board prepared by apply | coating this aqueous composition, and the said sheet | seat or boat.

  The inventor has conducted extensive research day and night in order to achieve the above object, and has identified water, a non-hydraulic composition containing calcium hydroxide as an inorganic material, and a composition containing an adhesive resin as an organic material. The dry film formed by applying an aqueous composition combined with a silane coupling agent having a functional group has excellent flexibility and stretchability, and follows the movement of the base material such as bending and deformation. And found that the occurrence of cracks and cracks was significantly suppressed. In addition, such a film is excellent in water resistance and abrasion resistance, and even if immersed in water, peeling of the film is suppressed, and the flexibility and stretchability are not adversely affected after immersion, and the film It has been found that even when the surface is rubbed with a cloth (dry cloth or wet cloth), the abrasion of the coating surface and the occurrence of gloss due to this are significantly suppressed.

  Therefore, according to the aqueous composition containing the above components, it eliminates the weak points of conventional plaster and dolomite, which are not flexible and easily cracked, poor in water resistance and waterproofness, and poor in abrasion resistance. It can be applied to plaster and dolomite materials as a coating agent for wallpaper and various sheets that require flexibility and stretchability, that is, followability of the groundwork, as well as outer walls and water that require water resistance and waterproofness. It was confirmed that it can be applied as a surrounding paint.

The present invention has been developed on the basis of such findings, and includes the following modes I to VIII:
I. Aqueous composition for forming flexible coating (I-1) Nonaqueous composition for forming flexible coating containing inorganic material, organic material and water, wherein said inorganic material contains calcium hydroxide Hard inorganic composition, the organic material is an adhesive resin,
Furthermore, the aqueous composition characterized by containing a silane coupling agent.
(I-2) the silane coupling agent, an epoxy group as the reactive functional groups are those having at least one functional group methacryloxy group, is selected from the group consisting of accession Li proxy group and an amino group, The aqueous composition described in (I-1).
(I-3) The aqueous composition according to (I-1) or (I-2), wherein the non-hydraulic inorganic composition containing calcium hydroxide is lime or dolomite.
(I-4) The adhesive resin is a resin containing at least one selected from the group consisting of an ester group, a ketone group, a carboxyl group, and a hydroxyl group as a functional group. The aqueous composition according to any one of 3).

(I-5) The aqueous composition according to any one of (I-1) to (I-4), wherein the adhesive resin is an acrylic or polyvinyl alcohol thermoplastic resin.
(I-6) The aqueous composition described in (I-5), wherein the thermoplastic resin is a resin having a hydroxyl group as a functional group.
(I-7) The aqueous composition according to any one of (I-1) to (I-6), further comprising a chelate compound.
(I-8) The aqueous composition described in (I-7), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(I-9) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The aqueous composition according to (I-8), which is a seed.
(I-10) The aqueous composition according to any one of (I-7) to (I-9), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(I-11) The aqueous composition according to any one of (I-1) to (I-10), further comprising an amino acid or a polymer thereof.
(I-12) The aqueous composition according to any one of (I-1) to (I-11), further comprising a white pigment.
(I-13) The aqueous composition according to any one of (I-1) to (I-12), wherein the aqueous composition forming a flexible film is a paint, a coating material, a coating agent, a sealer, or a primer. Composition.
(I-14) The aqueous composition according to any one of (I-1) to (I-13), which is an aqueous composition used for painting or coating with a flow coater.
II. Method for Producing Aqueous Composition Forming Flexible Coating (II-1) Liquid or non-hydraulic inorganic composition containing calcium hydroxide, adhesive resin, and silane coupling agent mixed with water The manufacturing method of the aqueous composition which forms the flexible film which has the process prepared in paste form.
(II-2) the silane coupling agent, an epoxy group as the reactive functional groups are those having at least one functional group methacryloxy group, is selected from the group consisting of accession Li proxy group and an amino group, (II-1) The manufacturing method described.
(II-3) The production method according to (II-1) or (II-2), wherein the non-hydraulic inorganic composition containing calcium hydroxide is lime or dolomite.
(II-4) (II-1) to (II-) wherein the adhesive resin is a resin containing at least one selected from the group consisting of an ester group, a ketone group, a carboxyl group and a hydroxyl group as a functional group. 3) The manufacturing method in any one of.

(II-5) The production method according to any one of (II-1) to (II-4), wherein the adhesive resin is an acrylic or polyvinyl alcohol thermoplastic resin.
(II-6) The production method according to (II-5), wherein the thermoplastic resin is a resin having a hydroxyl group as a functional group.
(II-7) The production method according to any one of (II-1) to (II-6), further comprising mixing a chelate compound and mixing with water.
(II-8) The production method according to (II-7), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(II-9) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The production method according to (II-8), which is a seed. (II-10) The production method according to any one of (II-7) to (II-9), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(II-11) The production method according to any one of (II-1) to (II-10), wherein an amino acid or a polymer thereof is further blended and mixed with water. (II-12) The production method according to any one of (II-1) to (II-11), wherein a white pigment is further blended and mixed with water.

III. Sheet or board, and production method thereof (III-1) Prepared by applying the aqueous composition described in any one of (I-1) to (I-14) to a sheet-like or board-like substrate surface Sheet or board.
(III-2) The sheet or board according to (III-1), wherein the surface of the sheet or board coated with the aqueous composition is further subjected to antifouling treatment.
(III-3) The above-mentioned sheet is used for wallpaper, shoji paper, paper, partition cloth, lighting cover, curtain, chair upholstery, car seat cover, in-sole place, insole, sanitary goods, air conditioner and air purifier. The sheet or board according to (III-1) or (III-2), which is any one selected from the group consisting of filters.
(III-4) (1) A step of applying the aqueous composition described in any one of (I-1) to (I-14) to a sheet-like or board-like substrate surface, (2) a substrate surface The manufacturing method of the sheet | seat or board in any one of (III-1) thru | or (III-3) which has the process of drying and solidifying the upper aqueous composition application surface.
(III-5) The production method according to (III-4), wherein the drying and solidifying step is performed by natural drying at room temperature or heating at a temperature equal to or higher than room temperature.
(III-6) The method for producing a sheet or board according to (III-2) or (III-3), further comprising the step of (3) antifouling treatment of the dried and solidified aqueous composition-coated surface.

IV. Method for improving flexibility, stretchability, water resistance or abrasion resistance of coating film formed from aqueous composition containing calcium hydroxide (IV-1) Water, non-hydraulic inorganic composition containing calcium hydroxide And forming a film using an aqueous composition containing a silane coupling agent in addition to an adhesive resin, and improving the flexibility, stretchability, water resistance or abrasion resistance of the film . Here, “improvement” is based on a film formed by using an inorganic composition containing water, calcium hydroxide, and an aqueous composition containing an adhesive resin without using a silane coupling agent. This means that the flexibility, water resistance or abrasion resistance of the coating is improved as compared with the reference coating.
(IV-2) The silane coupling agent has at least one functional group selected from the group consisting of an epoxy group, a methacryloxy group, acryloxy and an amino group as a reactive functional group. ).
(IV-3) The method according to (IV-1) or (IV-2), wherein the non-hydraulic inorganic composition containing calcium hydroxide is lime or dolomite.
(IV-4) The adhesive resin is a resin containing at least one selected from the group consisting of an ester group, a ketone group, a carboxyl group and a hydroxyl group as a functional group, (IV-1) to (IV- The method according to any one of 3).

(IV-5) The method according to any one of (IV-1) to (IV-4), wherein the adhesive resin is an acrylic or polyvinyl alcohol thermoplastic resin.
(IV-6) The method according to (IV-5), wherein the thermoplastic resin is a resin having a hydroxyl group as a functional group.
(IV-7) The method according to any one of (IV-1) to (IV-6), wherein the aqueous composition further contains a chelate compound.
(IV-8) The method according to (IV-7), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(IV-9) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound, and a reducing organic acid chelate compound. The method according to (IV-8), which is a seed. (IV-10) The method according to any one of (IV-7) to (IV-9), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(IV-11) The method according to any one of (IV-1) to (IV-10), wherein the film-forming composition further contains a white pigment.

V. Use of Silane Coupling Agent (V-1) Flexibility of film formed from water, non-hydraulic inorganic composition containing calcium hydroxide, and aqueous composition containing adhesive resin, Use of a silane coupling agent to improve at least one property selected from the group consisting of water resistance and abrasion resistance.
(V-2) The silane coupling agent has at least one functional group selected from the group consisting of an epoxy group, a methacryloxy group, acryloxy and an amino group as a reactive functional group. Use as described in).
(V-3) Use according to (V-1) or (V-2), wherein the non-hydraulic inorganic composition containing calcium hydroxide is lime or dolomite.
(V-4) The adhesive resin is a resin containing at least one selected from the group consisting of an ester group, a ketone group, a carboxyl group and a hydroxyl group as a functional group, (V-1) to (V- Use as described in any of 3).

(V-5) The use according to any one of (V-1) to (V-4), wherein the adhesive resin is an acrylic or polyvinyl alcohol thermoplastic resin.
(V-6) The use described in (V-5), wherein the thermoplastic resin is a resin having a hydroxyl group as a functional group.
(V-7) The use according to any one of (V-1) to (V-6), wherein the film-forming composition further contains a chelate compound.
(V-8) The use according to (V-7), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(V-9) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. Use described in (V-8), which is a species. (V-10) The use according to any one of (V-7) to (V-9), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(V-11) The use according to any one of (V-1) to (VI-10), wherein the aqueous composition further contains a white pigment.

  According to the present invention, it is formed by drying and solidifying by adding a silane coupling agent to water, a non-water-curable inorganic composition containing calcium hydroxide, and an aqueous composition containing an adhesive resin. At least one coating characteristic selected from the group consisting of flexibility, stretchability, water resistance and abrasion resistance can be improved.

From these, the following can be specifically mentioned as the effects of the present invention.
(1) By improving the flexibility and stretchability of the coating, it is possible to follow the bending and deformation of the base substrate. That is, according to the aqueous composition of the present invention, even if the base substrate is bent or deformed, it can follow and be able to form a film that hardly causes cracks (cracks) or peeling. In addition, sheets prepared using the aqueous composition of the present invention require flexibility and stretchability as well as lime and dolomite functions (antibacterial, antifungal, antiviral, deodorant, humidity control, etc.). It can be used as various sheets such as wallpaper, shoji paper, screen paper, partition cloth, curtains, roll screens, stickers in chairs and shoes, sanitary products such as masks and medical clothes.

(2) By improving the surface strength of the film and improving the wear resistance, the surface is hardly worn even when the surface of the film is rubbed several times, and gloss is not easily generated.
(3) By improving the water resistance of the coating, the coating properties (flexibility, stretchability, coating strength and abrasion resistance) at the time of drying are substantially maintained even when the coating is wet.

(A) The image of the result of having observed the film structure of the surface of the sheet | seat (Example sheet | seat 1) prepared using the aqueous composition of Example 4 with the scanning electron microscope is shown. From the left, images with magnifications of 500 times, 2000 times, and 5000 times are shown. (B) The image of the result of having observed the film structure of the surface of the sheet | seat (Comparative Example sheet | seat 1) prepared using the aqueous composition of the comparative example 4 with the scanning electron microscope (2000-times multiplication factor) is shown.

I. Aqueous composition having a function of forming a flexible film The aqueous composition targeted by the present invention has a function of forming a flexible film (flexible film-forming composition). The aqueous composition is an aqueous composition containing a non-water-curable inorganic composition containing calcium hydroxide, an adhesive resin, and water, and further contains a silane coupling agent. To do.

  Here, the “flexible film-forming composition” is capable of forming a flexible film on an object when it is applied, applied or sprayed onto the object. However, the aqueous composition that is the subject of the present invention only needs to have a film-forming ability, and its usage and form are not limited thereto. Specific examples of the flexible film-forming composition (aqueous composition) include paints, coating materials, sealers, primers and the like without limitation. Preferred are paints and coating materials used as finishing materials or cosmetic materials. Among them, it is preferable to use a ceiling or inner / outer wall of a building; a building member such as a cross or board / panel; a fitting or furniture or a member thereof; a tunnel wall, a guardrail material, a sound insulation wall material, a protective wall material, a bridge structure, or the like. For example, paints and coating materials used for finishing the members; In addition to this, it is applied to sanitary products such as masks, filters for air conditioners and air purifiers, curtains, chair upholstery, seat covers, partition cloths, in-shoe paste, insole and other various sheet-like fibers and non-woven fabrics. Can be mentioned.

(A) Non-hydraulic inorganic composition containing calcium hydroxide The “non-hydraulic inorganic composition containing calcium hydroxide” targeted by the present invention is a pneumatic and non-hydraulic inorganic composition, Specific examples include lime containing calcium hydroxide as a main component, particularly slaked lime, and dolomite. “Non-water-curable” means that it does not solidify in the presence of water, and in this sense, “non-hydraulic inorganic composition containing calcium hydroxide” means that it is agglomerated in the presence of water such as cement and gypsum. It is distinguished from a hydraulic inorganic composition having the property of solidifying.

  In addition, as lime, the regenerated lime reproduced | regenerated from waste materials, such as industrial lime, salt-baked lime, shellfish ash (shellfish ash), and a construction and civil engineering member, can also be used. These limes may be used alone or in combination of two or more. Preferably, it is a slaked lime which is an air-hard material and is a main raw material for plaster and dolomite plaster. Note that quick lime containing calcium oxide as a main component also corresponds to the “non-hydraulic inorganic composition containing calcium hydroxide” in the present invention because calcium oxide becomes calcium hydroxide in water. The “non-hydraulic inorganic composition containing calcium hydroxide” targeted by the present invention is a non-hydraulic calcium carbonate (calcium carbonate) as long as it does not interfere with the effects and functions of the present invention. Site, aragonite, vaterite, precipitated calcium carbonate such as basic calcium carbonate and amorphous calcium carbonate, heavy calcium carbonate) and the like. Preferably, those containing dolomite plaster that has been kneaded with water mainly composed of slaked lime and magnesium hydroxide and calcium hydroxide (slaked lime) that are produced by firing and treating dolomite with water. included.

  The proportion of calcium hydroxide to be blended in the aqueous composition is not particularly limited, but can be appropriately selected from the range of usually 3 to 95 wt% as the blending ratio per 100 wt% of the solid content of the aqueous composition. In order to prepare a coating composition that takes advantage of the excellent functions of calcium hydroxide (antifungal, antibacterial, antiviral, deodorant, humidity control), a certain amount is required. A preferred lower limit is 5% by weight, preferably 10% by weight, and more preferably 15% by weight. Moreover, as an upper limit, 80 weight%, Preferably it is 70 weight%, More preferably, 65 weight% can be mentioned. A more specific blending ratio is not limited, but is 15 to 75% by weight, preferably 20 to 70% by weight, more preferably 25 to 70% by weight, further preferably 30 to 65% by weight, and still more preferably 30 to 65% by weight. 60% by weight can be exemplified.

(B) Adhesive resin The adhesive resin used in the present invention is preferably a thermoplastic resin having adhesiveness. The resin alone or in cooperation with a silane coupling agent described later increases the initial adhesion between the inorganic compositions, and has the property of increasing the adhesion to the construction surface of the aqueous composition, and the silane coupling It has reactivity with the agent.

  Preferably, it is an adhesive resin containing at least one selected from the group consisting of an ester group, a ketone group, a carboxyl group and a hydroxyl group as a functional group, and as such a resin, preferably an acrylic or polyvinyl alcohol thermoplastic resin Can be mentioned.

  Here, the acrylic resin is preferably a water-soluble or water-dispersible resin. Specifically, styrene / acrylic copolymers such as styrene-acrylic ester, styrene-acrylonitrile and styrene-acrylamide-ethyl acrylate; vinyl acetate-acrylic Vinyl acetate / acrylic copolymers such as acid esters and vinyl acetate-methacrylic acid esters; butadiene / acrylic copolymers such as butadiene-acrylonitrile; vinyl chloride / acrylic copolymers, vinylidene chloride / acrylic copolymers, Veova / acrylic Acrylic resins such as copolymers, acrylic copolymers, acrylic-modified vinyl acetate / vinyl chloride copolymer resins, fluorine-modified acrylic resins, and silicon-modified acrylic resins. More preferably, at least one of (meth) acrylic acid, (meth) acrylic acid ester, (meth) acrylamides, or (meth) acrylonitrile described in Japanese Patent No. 3094227 is used as a monomer component as an acrylic resin. (See Patent No. 3094227, paragraphs [0015] to [0017]. The description of the patent publication is incorporated as a description of the specification of the present invention). ) Further, as the acrylic resin, those having a hydroxyl group in at least one part as a functional group can be suitably used as shown in the experimental examples described later. Examples of the acrylic resin having such a hydroxyl group include “acrylic latex“ Polytron Z871 ”” (Asahi Kasei Chemicals Corporation), “Tokrill X-4403”, “Tokrill S-743” and “Tokrill W-162” (above, Toyo Kinki Chemical Industry Co., Ltd.) can be exemplified without limitation.

  Examples of the polyvinyl alcohol-based resin include polyvinyl alcohol and polyvinyl acetal, and polyvinyl alcohol having a hydroxyl group is preferable.

  The proportion of the adhesive resin to be blended in the aqueous composition is not particularly limited as long as it exhibits the effects of the present invention. For example, as a proportion contained in 100% by weight of the solid content of the aqueous composition, solid conversion (total amount) ) In the range of usually 1 to 50% by weight. Preferably it is 1 to 40 weight%, More preferably, it is 5 to 30 weight%.

(C) Silane coupling agent The silane coupling agent used in the present invention has a silyl group (alkoxysilyl group) having a hydrolyzable group such as an alkoxy group at one end, and an epoxy group at the other end. It has a methacryloxy group, an acoxy group, or an amino group. Examples of the silane coupling agent having an epoxy group at the other end include 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3 -Glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane and the like can be exemplified. As the silane coupling agent having a methacryloxy group at the other end, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxy As the silane coupling agent having silane and an acryloxy group at the other end, 3-acryloxypropyltrimethoxysilane can be exemplified.

  Further, silane coupling agents having an amino group at the other end include N-2- (aminoethyl) -3-aminopropylmethyl dialkoxysilane, N-2- (aminoethyl) -3-aminopropylmethyltrialkoxy. Silane, 3-aminopropyltrialkoxylane, 3-trialkoxysilyl-N- (1,3-dimethyl-butylidene) propylamine, N-phenyl-3-aminopropyltrialkoxysilane, and N- (vinylbenzene)- Examples thereof include 2-aminoethyl-3-aminopropyltrialkoxysilane (or its hydrochloride). Here, “alkoxy” includes a methoxy group or an ethoxy group having 1 to 3 carbon atoms, preferably 1 to 2 carbon atoms.

  These various silane coupling agents may be used alone or in any combination of two or more.

  The ratio of the silane coupling agent blended in the aqueous composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and the kind of inorganic composition containing calcium hydroxide contained in the aqueous composition Depending on the blending amount, the type of the adhesive resin, the blending amount, and the like, it can be appropriately selected from the range of usually 0.05 to 2% by weight per 100% by weight of the aqueous composition. A proportion of preferably 0.1 to 1% by weight, more preferably 0.1 to 0.8% by weight, and still more preferably 0.1 to 0.5% by weight can be exemplified.

(D) the proportion of water to be blended in the aqueous compositions of water present invention is not particularly limited. Preferably, it can be appropriately selected from a range in which water is contained at a ratio of 10 to 70% by weight per 100% by weight of the aqueous composition. In this case, the aqueous composition is prepared so that the solid content is 30 to 90% by weight. More specifically, for example, when preparing an aqueous composition in a liquid form (so-called paint form) suitable for spraying, roller or brush coating, or industrial coating machines (flow coater, roll coater, vacuum coater, etc.) Can be prepared such that water is usually contained in a proportion of 30 to 60% by weight, preferably 35 to 50% by weight. In addition, when preparing an aqueous composition in a paste form suitable for glazing (so-called coating material form), water is usually 10 to 40% by weight, preferably 20 to 35% by weight. Can be prepared to be included.

(E) Chelate compound In addition to the said component, a chelate compound can be mix | blended with the aqueous composition of this invention.

  The chelate compound used here is a compound (ion sequestering agent) having an ion sequestering ability for capturing or sequestering metal ions such as calcium ions based on the chelate action, and particularly if it has such action There is no limit. Usually, it is a low molecular weight chelate compound having a molecular weight of 2000 or less, preferably 1000 or less, more preferably 700 or less, further preferably 600 or less, still more preferably 500 or less, and particularly preferably about 50 to 450.

  Examples of such chelate compounds include organic chelate compounds such as carboxylic acid chelate compounds, phosphonic acid chelate compounds, phosphoric acid chelate compounds, sulfonic acid chelate compounds, and reducing organic acid chelate compounds; silicates and phosphates. And inorganic chelate compounds such as sulfates. These chelate compounds are all well known to those skilled in the art.

  Although not limited, carboxylic acid-based chelate compounds include oxalic acid, propionic acid, spiculisporic acid, succinic acid, fumaric acid, maleic acid, phthalic acid, malonic acid, itaconic acid, acrylic acid, methacrylic acid. Carboxylic acids such as acids, aminoacetic acids and their isomers or their salts; citric acid, isocitric acid, tartaric acid, gluconic acid, heptogluconic acid, hydroxymalonic acid, lactic acid, malic acid, glycolic acid, glucuronic acid, β-D- Hydroxycarboxylic acids or salts thereof such as glucopyranuronic acid, salicylic acid, mandelic acid, glucoheptanoic acid, arabonic acid, and isomers thereof; nitrile triacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), ethylenediaminesuccinic acid, diethylenetriaminopenta Acetic acid (DTPA), triethylenetetramine hexaacetic acid ( TTHA), L-glutamic acid diacetic acid (GLDA), L-aspartic acid diacetic acid (ASDA), 1,3-propanediaminetetraacetic acid (PDTA), dimercaptol succinic acid (DMSA), and methylglycine diacetic acid ( MGDA) and other aminocarboxylic acids or salts thereof; dihydroxyethylglycine (DEG), triethanolamine (TEA), N- (2-hydroxyethyl) iminodiacetic acid (HEIDA), hydroxyethylethylenediaminetriacetic acid (HEDTA), dihydroxy Hydroxyaminocarboxylic acids or salts thereof such as ethylethylenediaminediacetic acid (DHEDDA) and 1,3-diamino-2-hydroxypropanetetraacetic acid (DPTA-OH); carboxymethyltartronic acid (CMT), and carboxymethyloxy And ether carboxylic acids such as acids (CMOS) or salts thereof. In addition, the compound which becomes free | released in water and becomes said carboxylic acid, for example, the glucono delta lactone or its salt which becomes free | released in water and becomes gluconic acid is also contained in the carboxylic acid type chelate compound said by this invention.

  Examples of phosphonic acid-based chelate compounds include phytic acid, aminomethylenephosphonic acid (NMP), aminotrimethylphosphonic acid (NTMP), methylenephosphonic acid, hydroxyethanediphosphonic acid such as 1-hydroxyethylidene-1,1-diphosphonic acid ( HEDP), phosphonocarboxylic acid derivatives such as phosphonobutanetricarboxylic acid (PBTC), aminotri (methylenephosphonic acid), ethylenediaminetetra (methylenephosphonic acid) (EDTMP), diethylenetriaminepenta (methylenephosphonic acid), hexamethylenediaminetetra ( Mention may be made of methylenephosphonic acid), nitrilotris (methylenephosphonic acid) (NTMP), and salts thereof.

  Examples of the sulfonic acid-based chelate compound include dimercaptopropanol sulfonic acid (DMPS) or a salt thereof.

  Examples of the reducing organic acid chelate compound include organic acids having reducibility (antioxidant action) such as citric acid, isocitric acid, malic acid, ascorbic acid and erythorbic acid, and salts thereof.

  Examples of inorganic chelate compounds include silicates such as sodium metasilicate, sodium sesquisilicate, and sodium orthosilicate; phosphates such as sodium orthophosphate, sodium phosphopyrophosphate, sodium tripolyphosphate, sodium tetraphosphate, and sodium hexametaphosphate; sodium sulfate And sulfates such as sulfamic acid. Preferred is a phosphate. Silicates are preferably used in combination with other inorganic chelate compounds or organic chelate compounds.

  The salts of the various compounds listed above include alkali metal salts such as sodium salts and potassium salts; alkaline earth metal salts such as magnesium salts, calcium salts, and strontium salts; ammonium salts; protonated amines or protonated salts. Examples of alkanolamine salts include metal salts such as zinc and iron. A sodium salt is preferable. These various chelate compounds may be hydrates.

These chelate compounds can be used alone or in combination of two or more.
The ratio of the chelate compound to be blended in the aqueous composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and is included in the aqueous composition according to the calcium ion sequestration force (capturing power). Depending on the kind and amount of the inorganic composition and the silane coupling agent, it can be appropriately selected from the range of usually 0.01 to 5% by weight per 100% by weight of the aqueous composition. Preferably, the ratio is 0.02 to 3% by weight, more preferably 0.05 to 2% by weight, still more preferably 0.05 to 1% by weight, and particularly preferably 0.05 to 0.5% by weight. Can do. By compounding chelate compounds, calcium hydroxide in lime and dolomite can be prevented from reacting with the silyl group of the silane coupling agent to cause a pozzolanic reaction, resulting in an aqueous composition with excellent storage stability. Product can be prepared.

(F) Other components As described above, the aqueous composition of the present invention comprises, as basic components, a non-hydraulic inorganic composition containing calcium hydroxide, an adhesive resin, a silane coupling agent, and water. Although it contains a chelate compound accordingly, other components can be contained as long as the effects of the present invention are exhibited. Suitable examples of such components include pigments, particularly white pigments, thickeners, and amino acids or amino acid polymers.

(F-1) Pigment The white pigment used in the present invention may be an organic pigment or an inorganic pigment, but is preferably an inorganic white pigment. Specific examples include at least one inorganic white pigment selected from the group consisting of titanium oxide, zinc white, zinc sulfide, lithopone, lead white, antimony white and zirconia. These may be used alone or in combination of two or more. Preferred is titanium oxide, or a combination of titanium oxide and another white pigment. Titanium oxide can be used in any of rutile, anatase, and brookite forms as long as it has a usage form as a white pigment. The rutile form is preferred. Incidentally, the titanium oxide may be surface treated with a hydrous metal oxide Al ₂ O ₃ · nH ₂ O or SiO ₂ · nH ₂ O or the like for the purpose of improving performance such as dispersibility and durability.

  The mixing ratio of the white pigment is not particularly limited as long as it does not interfere with the effect of the present invention. For example, the blending ratio per 100% by weight of the solid content of the flexible film-forming composition is, for example, 0.05 to 40% by weight, preferably 0.25 to 30% by weight, more preferably 0.5 to 0.5% in terms of solids. An example is 25% by weight. As the white pigment content is increased, uneven coating can be suppressed, and coloration and color stability when the flexible film-forming composition is colored are better. Further, uneven color and fading (color loss) ) And the effect that the color difference can be suppressed tends to increase. However, in view of the dispersibility and storage stability of the flexible film-forming composition, it can usually be adjusted appropriately from the above range.

  Moreover, a color pigment (colored pigment) can be mix | blended as a pigment. Colored pigments (colored pigments) are blended in combination with the above-mentioned white pigment to form a good and uniform color and form a coating with significantly reduced color unevenness (including unevenness of coating), color skip and color difference. can do.

  The colored pigment is not particularly limited as long as it is a colored pigment other than white. Moreover, it does not matter whether the organic pigment or the inorganic pigment is different. Specifically, black pigments such as carbon black and iron oxide (iron black): cadmium red, red beryllium (red iron oxide), molybdenum red, red pigment such as red lead: chrome yellow, titanium yellow, cadmium yellow Yellow pigments of yellow iron oxide (yellow iron), tan, antimony yellow, vanadium tin yellow, vanadium zirconium yellow: green pigments such as chromium oxide, viridian, titanium cobalt green, cobalt green, cobalt chrome green, Victoria green, phthalocyanine green : Blue pigments such as ultramarine, bitumen, cobalt blue, cerulean blue, cobalt silica blue, cobalt zinc silica blue, and the like. Preferably, it is an alkali-resistant color pigment, more preferably, iron oxide such as black iron oxide (iron black), red bean (red iron oxide), or yellow iron oxide (yellow iron) or a metal oxide such as ultramarine, or It is a coloring pigment mainly composed of carbon black. In addition, these may be used individually by 1 type, or may combine 2 or more types arbitrarily, and can adjust a combination and a mixture ratio suitably so that it may become a desired color. Color soil can also be used. The blending ratio of the color pigment can be appropriately adjusted depending on the type of the color pigment to be used and the desired color, and is not particularly limited.

(F-2) Thickeners Thickeners that are highly compatible with water, have water solubility or water dispersibility, and are compatible with the components of the aqueous composition are preferably used. . Specifically, hydrophilic polymer compounds can be exemplified.

  Examples of the hydrophilic polymer compound include a cationic hydrophilic polymer compound having a cationic hydrophilic group such as a quaternary ammonium base or an amino group. Specific examples of such hydrophilic polymer compounds include aminoalkyl (meth) acrylate quaternary salt (co) polymers, polyaminomethylacrylamide salts or quaternary ammonium salts, acrylamide / aminomethylacrylamide copolymer salts or Quaternary ammonium salt, polyaminomethylacrylamide salt or quaternary salt, chitosan hydrochloride, sulfate or acetate, cationized starch, polyethyleneimine, vinylpyrrolidone / dimethylaminoethyl methacrylate quaternary copolymer, hydroxy Examples thereof include propyltrimethylammonium chlorided guar gum and hydroxypropyltrimethylammonium chlorided starch.

  Moreover, as a hydrophilic high molecular compound, the nonionic hydrophilic high molecular compound which has nonionic hydrophilic groups, such as a hydroxyl group, an ether group, and an amide group, can be illustrated. Specific examples of such hydrophilic polymer compounds include polyvinyl alcohol, formalin condensate of alkylphenol alkylene oxide adduct, polyethylene polyamine propylene oxide / ethylene oxide adduct, alkylamine alkylene oxide adduct, polyalkylene glycol copolymer, Polyglycol ester, polyacrylamide, polyethylene oxide, polyvinylpyrrolidone, polyvinylpyrrolidone / vinyl acetate copolymer; natural gums such as guar gum, locust bean gum, tragacanth gum, karaya gum, crystal gum, pullulan, xanthan gum; methylcellulose, ethylcellulose, hydroxymethylcellulose , Hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropyl Chill cellulose, cellulose derivatives such as hydroxyethyl cellulose is exemplified.

  Preferably, it is a nonionic hydrophilic polymer compound because it does not affect the behavior of an electrolytic substance such as calcium hydroxide that can be present in the aqueous composition and can be used regardless of its presence. Of these, natural gums and cellulose derivatives are preferred.

  A hydrophilic polymer compound having a hydroxyl group can also be used as a thickener. Specific examples of the hydrophilic polymer compound having a hydroxyl group include starches such as starch phosphate, cationized starch, starch / acrylic acid / sodium acrylate, and hydroxypropyltrimethylammonium chloride starch; methylcellulose, ethylcellulose, hydroxymethylcellulose , Hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, cellulose derivatives such as hydroxyethylmethylcellulose; xanthan gum, gellan gum, gum arabic, carrageenan, alginic acid or salt thereof, chitosan or salt thereof, hydroxypropyltrimethylammonium chlorided guar gum, guar gum, locust Bean gum, tara gum, curdlan, pullulan, chitin, ta Polyvinyl alcohol; Lind seed gum, dextran, polysaccharides such as dextrin and polyhydric alcohols such as glycerin or polyethylene glycol can be exemplified.

  Preferably, it is a nonionic hydrophilic polymer compound having a hydroxyl group. Specific examples include polyvinyl alcohol, formalin condensates of alkylphenol alkylene oxide adducts, polyethylene polyamine propylene oxide / ethylene oxide adducts, alkylamine alkylene oxide adducts, polyalkylene glycol copolymers, polyglycol esters. , Polyethylene oxide, polyvinylpyrrolidone, polyvinylpyrrolidone / vinyl acetate copolymer; gum agents such as guar gum, locust bean gum, tragacanth gum, karaya gum, crystal gum, pullulan, xanthan gum; methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose , Hydroxypropyl methylcellulose, hydroxyethyl Cellulose derivatives such as Le cellulose is exemplified. Preferred are cellulose derivatives such as methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose.

  Moreover, saccharides can also be mix | blended as a hydrophilic compound. For example, monosaccharides such as glucose, fructose, galactose, mannose, xylose, arabinose and ribose: disaccharides such as maltose, sucrose, lactose and trehalose: trisaccharides such as maltotriose and raffinose: oligosaccharides: and sorbitol Examples include sugars such as sugar alcohol.

  The ratio of the above-mentioned various thickeners to be blended in the aqueous composition is not particularly limited, and is usually 0.01 to 5% by weight in terms of solid (total amount) as a ratio contained per 100% by weight of the solid content of the aqueous composition. It can be suitably selected from the range. Preferably it is 0.03 to 3 weight%, More preferably, it is 0.05 to 2 weight%, More preferably, it is 0.1 to 1 weight%.

(F-3) Amino acids or amino acid polymers The amino acids targeted by the present invention include, for example, glycine (HI: -0.4), threonine (HI: -0.7), serine (HI: -0.8), tryptophan (HI:- 0.9), tyrosine (HI: -1.3), proline (HI: -1.6), glutamic acid (HI: -3.5), aspartic acid (HI: -3.5), glutamine (HI: -3.5), asparagine (HI: -3.5) ), Histidine (HI: -3.2), lysine (HI: -3.9), and arginine (HI: -4.5), alanine (HI: 1.8), methionine (HI: 1.9), cysteine (HI: 2.5), phenylalanine ( HI: 2.8), leucine (HI: 3.8), valine (HI: 4.2) and isoleucine (HI: 4.5) and other amino acids other than proteins are included. Here, HI means a hydrophobic index indicating the polarity of amino acids (Kyte and Doolittle, J. Mol. Biol., 157, 105-132 (1982)). Specifically, if the hydrophobicity index is less than 0 (that is, a negative value), it can be classified into polar amino acids. The greater the absolute value of the less than 0 hydrophobicity index, the greater the degree of polarity. growing. On the other hand, if the hydrophobic index is greater than 0 (ie, a positive value), it can be defined as a hydrophobic amino acid. The greater the absolute value of the hydrophobic index, the greater the degree of hydrophobicity.

  These amino acids can be used in a free state or in a salt form, but acidic or basic amino acids such as aspartic acid, glutamic acid, histidine, arginine, and lysine are preferably used in a salt form. Examples of such salts include salts with alkali metals such as potassium and sodium and salts with alkaline earth metals such as magnesium and calcium aspartic acid and glutamic acid. Examples of histidine, arginine, and lysine include salts with inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid, and phosphoric acid; salts with organic acids such as tartaric acid, malic acid, citric acid, and ascorbic acid.

  The amino acid polymer targeted by the present invention may be a polymer composed of the same amino acid or a polymer composed of two or more different amino acids. Polymers composed of the above amino acids are preferred, and examples thereof include polymers composed of the same polar amino acids such as polyaspartic acid, polyglutamic acid, polylysine, and polyarginine. These polymers are not limited, but those having a molecular weight of 50,000 or less, preferably 20,000 or less, more preferably 10,000 or less, particularly preferably 5000 or less, and still more preferably 2000 or less are preferred. These polymers can also be used in the form of a salt. For example, polyaspartic acid or polyglutamic acid is a salt with an alkali metal such as potassium or sodium, or a salt with an alkaline earth metal such as magnesium or calcium. In addition, polylysine and polyarginine can be used in the form of a salt with an inorganic acid such as hydrochloric acid or a salt with an organic acid such as citric acid or ascorbic acid.

These amino acids, amino acid polymers or salts thereof (amino acids) can be used singly or in combination of two or more.
The proportion of amino acids to be blended in the aqueous composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and depending on the type of each component and the amount of the blend contained in the aqueous composition, it is aqueous. It can be appropriately selected from the range of usually 0.001 to 10% by weight per 100% by weight of the composition. Preferably it is 0.01 weight% or more, More preferably, it is 0.05 weight% or more. Although the upper limit is not particularly limited, the ratio is preferably 8% by weight or less, more preferably 5% by weight or less, and still more preferably 3% by weight or less, with a limit of 10% by weight considering the balance with other components. be able to.

(F-4) Other additives Furthermore, the aqueous composition of the present invention includes, as other optional components, extenders, aggregates, oils, photocatalysts, dispersants, wetting agents as long as the effects of the present invention are not hindered. Further, a water reducing agent, a fluidizing agent, an antifoaming agent, a pH adjusting agent, a surfactant, a waterproofing agent and the like can be blended.

  The extender pigments include talc, kaolin clay, aluminum hydroxide, calcium carbonate (heavy calcium carbonate, light (precipitating) calcium carbonate), bentonite, barium sulfate (precipitating barium sulfate, barite powder), white carbon, A silica etc. can be illustrated.

  Examples of aggregates include inorganic aggregates (fine aggregates) such as quartz sand, cold water sand, perlite, vermiculite, shirasu spheres, and sludge fired aggregates, as well as kaolin, halloysite, montmorillonite, bentonite, gibbsite, Natural inorganic materials such as mica, ceramic sand, glass beads, perlite, acid clay, porcelain stones, wax, feldspar, limestone, plaster, dolomite, magnesite, talc, tourmaline, diatomaceous earth, iron powder, fly ash; barium hydroxide Water-insoluble metal hydroxides such as magnesium hydroxide and natural calcium; calcium silicate hydrates such as tobermonite and zonotolite; waters of various oxides such as calcium aluminate hydrate and calcium sulfoaluminate hydrate Japanese products: Alumina, silica, hydrous silicic acid, magnesia, zinc oxide, soot Nell, synthetic calcium carbonate, calcium phosphate, magnesium carbonate, and powder, fiber or granular inorganic material such as synthetic minerals such as barium sulfate, potassium titanate. Moreover, it can replace with an aggregate and replace with an aggregate, and a fiber and fiber powder can also be mix | blended. Examples of such fibers include natural fibers conventionally used for plaster materials, chemical fibers such as polyethylene and tetron, and wheat fibers. Examples of natural fibers include husa, white hair, nanjing, exposed, oil, and paper.

  As the oil, oils conventionally used in plaster materials can be widely used. For example, rapeseed oil, linseed oil, safflower oil, sunflower oil, avocado oil, evening primrose oil, soybean oil, corn oil, peanut oil, cottonseed oil , Sesame oil, rice oil, rapeseed oil, olive oil, castor oil, emma oil, kiri oil, niger seed oil, kapok oil, safflower oil, purple seed oil, primrose seed oil, camellia oil, etc. .

  Examples of the photocatalyst include oxides having photocatalytic activity. Such oxides having photocatalytic activity include titanium oxide, rubidium oxide, cobalt oxide, cesium oxide, chromium oxide, rhodium oxide, vanadium oxide, zinc oxide, manganese oxide, rhenium oxide, ferric oxide, tungsten trioxide, and oxide. Examples thereof include inorganic oxides such as zirconium, tin oxide, bismuth oxide, ruthenium oxide, strontium titanate, molybdenum oxide, germanium oxide, lead oxide, cadmium oxide, copper oxide, niobium oxide, and tantalum oxide.

  As the dispersant and the wetting agent, both can be appropriately selected from those usually used in blends in paints and coating materials. For example, a formalin condensate of sodium alkylnaphthalene sulfonate, polyacrylic acid copolymer, acrylic Examples include acid-maleic acid copolymers, styrene-maleic acid copolymers, fatty acid esters of polyoxyethylene, alkylphenol ethers, sulfosuccinic acid derivatives, block polymers of polyethylene oxide and polypropylene oxide, and the like.

  Examples of the water reducing agent or fluidizing agent include surfactants such as lignin sulfonic acid, naphthalene sulfonic acid, melamine sulfonic acid, polystyrene sulfonic acid, and polycarboxylic acid.

  As an antifoamer, it can select suitably from what is normally mix | blended and used for a coating material, a coating material, and a building spraying material. Examples thereof include various foam suppressors and foam breakers such as octyl alcohol, glycol derivatives, cyclohexane, silicon, pluronic surfactants and polyoxyethylene alkylphenyl ether.

  Although it does not restrict | limit especially as a waterproofing agent, A silicone oil, a silicone resin, an organoalkoxysilane etc. can be illustrated.

  The aqueous composition of the present invention is basically mixed with the above-mentioned components and mixed using a conventional method for coating materials or paints, for example, a blending device (mixer, shaker, mill, kneader, etc.), etc. It can be prepared by making it into a paste. At this time, the silane coupling agent is preferably used in a state where it is dissolved in water in advance, preferably in water adjusted to be acidic.

  The aqueous composition of the present invention thus prepared is excellent in fluidity, not only roller coating and brush coating, but also painting using a spray (air spray, airless spray, low-pressure atomizing spray, etc.) It can be suitably used for coating using an industrial coating machine (automatic coating machine) such as a coater, roll coater, and vacuum coater. In addition, the aqueous composition of the present invention has a strong adhesion to an object to be coated (base material), and also has good dispersibility, so that it forms a film having a uniform and stable adhesion strength (a film having excellent durability). Can do. Furthermore, according to the aqueous composition of the present invention, it is possible to form a coating film that has flexibility and stretchability and excellent base followability, and is less likely to be cracked or peeled by bending or deformation of the base. Moreover, according to the aqueous composition of the present invention, a film excellent in water resistance, waterproofness and abrasion resistance can be formed.

  For this reason, the aqueous composition of the present invention can be widely used as a coating material or paint for construction and civil engineering, and as a cosmetic coating material or paint for furniture or fittings. Specifically, for example, painting (coating) of interior and exterior surfaces such as ceilings and walls (inner and outer walls) of various buildings; base materials and decorative materials for ceilings and walls (inner and outer walls) of buildings Painting (coating) of various building components (cross, panels, boards) used as the surface of the road structures such as tunnel walls, guardrails, sound insulation walls and protective walls, and surfaces of bridge structures ( Coating); and various wall materials such as tunnel walls, sound insulation walls, protective walls, and various civil engineering members (panels, boards, columns) such as various members of bridge structures. Moreover, it can be used for preparation of the sheet | seat and board mentioned later.

II. According to the aqueous composition of the present invention , the sheet or board, and the production method thereof, as described above, because it is possible to form a film having flexibility and stretchability and exhibiting excellent ground following properties, It can be suitably used for manufacturing a sheet or board that is easily bent or deformed. Therefore, this invention provides the sheet | seat or board which has the film formed from the said aqueous composition on the surface of a sheet-like or board-like base material (coating object).

  The board (including panel) -like base material is not particularly limited as long as it is a plate-like material on which the aqueous composition of the present invention can be applied. For example, board materials and panel materials used for architectural interiors (such as indoor walls and ceilings) and exteriors can be widely cited. Specifically, wood board (including solid wood), plywood, medium density fiber board, plastic board, cement mortar, asbestos cement calcium silicate board, hollow cement board, wood cement board, panel cement board, rock wool board, wood Wool cement board, steel plate panel, concrete board, PC panel, ALC panel, asbestos slate, gypsum board, particle board, foam cement board, wood chip cement board, calcium silicate board, slag cement board, wood plastic combination, siding board ( Examples include metal-based and ceramic-based), insulation boards, volcanic vitreous multilayered plates, and metal panels such as stainless steel, iron, copper, and aluminum.

  The surface of the board (printing surface) may be pretreated such as a base treatment such as painting or coating, or a sheet is attached in advance. When the board is made of a flammable material such as a wooden material, it may be subjected to a flame-retardant treatment (semi-incombustible treatment, non-flammable treatment, or fireproof treatment) in advance.

  Further, the sheet (including cloth) substrate is not particularly limited as long as it is a sheet that can be coated with the aqueous composition of the present invention on its surface. Similar to the board, the surface of the sheet can be treated with a base treatment agent (sealer) or the like and then applied from the top. As a sheet | seat, the sheet | seat material used, for example for the interior for buildings (a wall, a ceiling, etc.) can be mentioned widely. For example, examples of the sheet material include a fibrous sheet such as a nonwoven fabric or a woven fabric made of paper or various fibers. Specifically, the paper includes Japanese paper, shoji paper, paper, western paper (high quality paper, medium quality paper), kraft paper, thin paper, backing paper, resin impregnated paper, cardboard, cardboard, coated paper / art paper, Cast coated paper, metal foil (for example, aluminum foil or copper foil) are laminated and impregnated with flame retardant paper (including semi-incombustible paper and non-combustible paper), recycled paper, and polymer resin to increase strength and water resistance. Impregnated paper, dust-free paper with reduced dust generation, functional paper containing inorganic powder (porous powder such as aluminum hydroxide, calcium carbonate, activated carbon, heat-resistant powder), and special paper (water-resistant paper) , Antibacterial paper, fluorescent paper, flame-retardant backing paper, semi-incombustible paper, non-combustible paper, heat-resistant paper), PT cellophane, MST cellophane, K cellophane, LDPE, MDPE, HDPE, ionomer, EVA, CPP, OPP, KOP, PET, KPET, CN, ON, K nylon, vinylon, ethylene vinegar bicopo Sheet base materials other than paper such as saponified products, PDVC, cured PVC, softened PVC, acetate, polycarbonate, HIPS, OPS, polybutadiene, contracted PVC, contracted PP, contracted PE, expanded PE, expanded PS; various natural fibers and artificial fibers Examples thereof include a fibrous sheet such as a nonwoven fabric or a woven fabric, and a metal sheet such as stainless steel, iron, copper, or aluminum.

  As the fibrous sheet, for example, natural fibers; glass fibers; or porous woven fabrics, nonwoven fabrics, and knitted fabrics that are obtained by using synthetic fibers such as polypropylene, acrylic, nylon, polyester, polyethylene terephthalate, polyamide, and vinylon. Etc. In addition, the said raw material can be used individually by 1 type, or can also be used in combination of 2 or more types arbitrarily. The sheet may be a mesh sheet.

  These sheet-like bases include, for example, architectural interiors (interior walls, ceilings, etc.) and sheet materials (wallpaper, etc.) used in the production of interior building materials (eg, interior panels); joinery (eg, board doors) , Lattice doors, shoji screens, fences, bambo, flush doors, piers, coffin doors, etc.), furniture (eg clothes holders, chests, desks, bookcases, clogs, etc.), water furniture (eg sinks, washstands, etc.) ), Office equipment (for example, partitions, bookcases and desks), and sheet materials used for decorative finishing of those components; sheet materials used as lighting covers; curtains, roll screens, carpets, chairs, car seat covers Included are sheets used as textile products such as sanitary products such as in-shoes, insoles, masks and medical clothing (white coats and aprons). In addition, air conditioner and air purifier filters are included.

  For this reason, the sheet of the present invention includes wallpaper (including flame-retardant wallpaper, semi-incombustible wallpaper, and non-combustible wallpaper) manufactured using the above sheet-like base material, decorative sheet for interior building materials, shoji paper, paperboard, and joinery / Furniture / Water furniture / Decoration sheets for office equipment, partition cloths, lighting covers, curtains, carpets, chair upholstery, car seat covers, in-shoe paste, insoles, masks, etc., and air conditioners and air cleaners Includes machine filters.

  Examples of the film substrate include polyester film, polypropylene film, polystyrene film, synthetic paper mainly made of plastic, vinyl chloride film, polyimide film, and the like.

  In the sheet or boat of the present invention, the above-described aqueous composition of the present invention is applied (including spray coating and dip coating) to the surface of a base material such as the above-described sheet or board (which may be subjected to a ground treatment). It can be manufactured by drying. There are no particular restrictions on the method of application, including roller coating, brushing and troweling, painting using a spray or gun (air spray, airless spray, low-pressure atomizing spray, etc.), flow coater, roll coater, vacuum Any of coating using an industrial coating machine (automatic coating machine) such as a coater may be used. For the purpose of industrially producing a large number of sheets or boats, a coating method using the industrial coating machine (automatic coating machine) can be suitably used.

  Thus, the thickness of the film formed on the substrate surface is not particularly limited and can be arbitrarily set as desired, but can be appropriately selected from a range of usually 0.05 to 15 mm.

  Any of a natural drying method, a ventilation drying method, a forced drying method or a heat drying method can be used for drying the aqueous composition coated on the surface of the article (base material). At this time, calcium hydroxide and adhesive resin contained in the aqueous composition react with the silane coupling agent, bond and cure through the silane coupling agent, and adhere to the substrate surface to form a coating. The temperature used for drying is not particularly limited, but is preferably room temperature to 100 ° C, more preferably room temperature to 90 ° C, and further preferably room temperature to 80 ° C.

  The sheet or board of the present invention may be one in which the surface of the coating formed from the aqueous composition is further subjected to antifouling treatment or protection treatment.

  Here, the antifouling treatment has a function of preventing the surface of the sheet or board of the present invention coated with the aqueous composition from being contaminated with substances that cause stains (for example, soy sauce, coffee, spear, aqueous pen, etc.). It can carry out by coating with the coating material which has. Examples of such a coating material include a silicon coating material containing a silicon resin and a fluorine coating material containing a fluororesin. Such a coating material may contain a photocatalyst such as titanium oxide or a matte material.

  Moreover, a protection process can be performed by laminating | stacking the application surface by the said aqueous composition of the sheet | seat or board of this invention with a protection sheet or a protective film. In particular, when a decorative boat or sheet is manufactured in a factory, the commercial value is significantly reduced due to contamination, scratches, and cracks on the printing surface that may occur during subsequent transportation, secondary processing, or construction. The protective sheet or protective film is laminated on the printing surface to protect the printing surface (decorative layer) from fouling, scratches and cracks during transportation, secondary processing, or construction. Can be easily removed without damaging the printing surface with an appropriate force.

III. Method for improving flexibility, stretchability, water resistance and abrasion resistance of a film formed from an aqueous composition As described above, in an aqueous composition containing an inorganic composition containing calcium hydroxide and an adhesive resin, By using the coupling agent, the flexibility and stretchability of the coating formed by coating are significantly improved (Experimental Examples 1 to 3). As a result, since the coating stretches following the bending or deformation of the base, it is possible to significantly prevent the occurrence of problems such as cracks (cracks) and peeling. For this reason, this invention also provides the method of suppressing a crack about the film containing the non-hydraulic inorganic composition containing calcium hydroxide, such as lime and dolomite.

  Further, as shown in Experimental Examples 1 to 3 to be described later, the flexibility and stretchability of the coating and the followability of the base are maintained even when the coating is wet with water, so that the silane coupling agent It is recognized that water resistance and waterproofness are imparted to the coating film formed by application of (Examples 1 to 3). For this reason, this invention also provides the method of providing water resistance and waterproofness about the film containing the non-hydraulic inorganic composition containing calcium hydroxide, such as lime and dolomite.

  Furthermore, as shown in Experimental Example 5, in the aqueous composition containing the inorganic composition containing calcium hydroxide and the adhesive resin, the coating surface formed by applying the silane coupling agent becomes stronger. Thus, the wear resistance is improved. As a result, even if the surface of the coating is rubbed, the surface is not easily worn, and gloss due to wear hardly occurs. In addition, as described above, the abrasion resistance is maintained even when the film is wetted with water as a result of imparting water resistance and waterproofness to the film (wet abrasion resistance). Such abrasion resistance is useful in that gloss and unevenness hardly occur even when dirt on the coated surface is rubbed with a cloth or the like.

  These methods are characterized by using an aqueous composition containing a silane coupling agent in addition to an inorganic composition containing calcium hydroxide, an adhesive resin and water as the aqueous composition to be used. Here, the types and blending amounts of the inorganic composition and the adhesive resin containing calcium hydroxide used for the preparation of the aqueous composition, and the blending amount of water are as described in the above section I. can do.

  Such an aqueous composition may further contain a chelate compound as necessary, but may contain other components as long as the above effects are not hindered. Examples of such components include white pigments, colored pigments (colored pigments), thickeners, amino acids or polymers thereof, extender pigments, aggregates, fibers such as soot, oil, photocatalysts, dispersants, wetting agents, antifoaming agents, A pH adjuster, a surfactant, a water reducing material, a fluidizing agent, a waterproofing agent and the like can also be blended. The types of these components are as described in the above section I, and this description can be used here as well.

  By using such an aqueous composition for film formation, the flexibility and stretchability of the film are improved, and a film that does not easily crack (crack) or peel off even if it follows the bending or deformation of the substrate is formed. can do. In addition, it is possible to form a film with improved water resistance, waterproofness, and abrasion resistance (including wet abrasion resistance). There are no particular restrictions on the method of applying the coating or the object (coating object) to which the aqueous composition is applied, and any of those described above can be used.

  Hereinafter, the contents of the present invention will be specifically described with reference to the following experimental examples and examples. However, these examples and the like are only one aspect of the present invention, and the present invention is not limited to these examples.

Examples 1-8, Comparative Examples 1-4
In order to use for Experimental Examples 1-4 mentioned later, based on the prescription described in Table 1, the aqueous composition for a coating (Examples 1-8, Comparative Examples 1-4) was prepared. Specifically, the components described in Table 1 are placed in a mixer for preparing a coating material and stirred to disperse the solid content in water, and aqueous compositions (Examples 1 to 8 and Comparative Examples 1 to 4) are prepared. Prepared. The silane coupling agent was used after being dissolved in water adjusted to be acidic in advance.

  After this is crushed with an 80 mesh filter, it is used in a roll coater for an automatic coating machine, and the thickness is applied to a sheet-like base material (synthetic paper: YUPOTAC base paper SGS80, manufactured by YUPO Corporation) (thickness 80 μm). Was uniformly applied so as to be 150 μm by wet. Next, this was put in a drying furnace (atmosphere temperature: 80-100 ° C.) set to a contact temperature of 60-70 ° C. and dried by heating for 120 seconds to form a film on the substrate surface (Example sheet) 1-8, comparative example sheets 1-4).

The result of having observed the film structure of the surface of the Example sheet | seat 4 and the comparative example sheet | seat 1 with the scanning electron microscope is shown in FIG. As can be seen, it was confirmed that the coating structure on the surface of the example sheet 4 was generally homogeneous and more porous than the coating structure on the surface of the comparative example sheet 1. It was. In addition, the example sheet 4 was superior to the comparative example sheet 1 in the moisture absorbing function and deodorizing function (formaldehyde, ammonia, hydrogen sulfide) of the coating film. One of the reasons why the function of the coating is improved in this way is to use a silane coupling agent as a component of the aqueous composition, and as shown above, it has an overall homogeneous and more dense porous structure. The formation of a thick film.

Experimental Example 1 Bending crack resistance test (without water immersion / with water)
Using the aqueous compositions (Examples 1 to 8 and Comparative Examples 1 to 4) coated sheets (Example Sheets 1 to 8 and Comparative Examples Sheets 1 to 4) prepared above, bending crack resistance according to the following method A test was conducted.

(1) Test method After preparing each test sheet in an 8 cm square and treating it under the following conditions, each was folded 180 degrees (folded with the film inside) and 180 degrees in two directions, the vertical direction and the horizontal direction. Mountain folds (folded with the coating on the inside) were performed, and the occurrence of cracks on the coating surface was observed. The test was carried out twice for each test sheet.

<Processing conditions>
A: As it is (without water immersion): Dry state B: Water immersion for 30 minutes, Undried: Wet state
(2) Test results Both test sheets (Comparative Example Sheets 1 and 2) prepared with an aqueous composition (Comparative Examples 1 and 2) prepared without using a silane coupling agent were in a dry state (treatment condition A). In the test after the treatment, it was confirmed that cracks were generated in the film in both the case of valley fold and the case of mountain fold (evaluation: x). In the test in a wet state (after treatment under treatment condition B), cracks occurred in the film both in the case of valley folds and in the case of mountain folds. There were exposed parts (evaluation: x).

  On the other hand, all the Example sheets 1-8 created with the aqueous composition (Examples 1-8) prepared using the silane coupling agent (an epoxy group, a methacryloxy group, an acryloxy group, an amino group) In the test in the dry state and the test in the wet state, no cracks or defects were visually observed in the coating (evaluation: ◯). In particular, Example Sheets 5 to 8 prepared with an aqueous composition (Examples 5 to 8) prepared using an acrylic resin having a hydroxyl group (Adhesive Resin 2) as an adhesive resin were not cracked in the film even by microscopic observation. Almost no recognition was found, and it was confirmed that the film had excellent crack resistance (evaluation:）). Moreover, the Example sheet | seat 8 produced with the aqueous composition (Example 8) prepared using the silane coupling agent which has an amino group among them was equipped with the outstanding crack resistance.

  On the other hand, both Comparative Example Sheets 3 and 4 prepared with an aqueous composition (Comparative Examples 3 and 4) prepared using a silane coupling agent having a mercapto group, both in a dry state test and a wet state test, Although the degree of cracking of the coating was suppressed as compared with Comparative Example Sheets 1 and 2, it was recognized that the degree of cracking was larger than that of Example Sheets and was not sufficient for use as a product (Evaluation: Δ).

  From the above, from an aqueous composition prepared by using a non-hydraulic inorganic composition containing calcium hydroxide and an adhesive resin together with a silane coupling agent having an epoxy group, a methacryloxy group, an acryloxy group or an amino group It was confirmed that the formed film had flexibility (flexibility), and the occurrence of cracks and peeling during the bending was remarkably suppressed. Furthermore, the film has improved water resistance, and the film retains its flexibility (flexibility) even after being soaked in water, and the occurrence of cracks and peeling is significantly suppressed during bending. It was confirmed that

Experimental Example 2 Stretch followability test (without / soaking in water)
Using the aqueous compositions (Examples 1 to 8 and Comparative Examples 1 to 4) coated sheets (Example sheets 1 to 8 and Comparative Examples sheets 1 to 4) prepared as described above, a stretch followability test was performed according to the following method. Went.

(1) Test method Each test sheet was prepared to 22 cm (length) x 1 cm (width), treated under the following conditions, and then stretched to 30 using a shopper type tensile tester (manufactured by Suga Test Instruments Co., Ltd.). The test sheet was stretched by stretching in the longitudinal direction until it reached%. After stretching, the state of the coating on each test sheet was observed visually and with a microscope. The test was conducted three times for each test sheet.

<Processing conditions>
A: As it is (without water immersion): Dry state B: Water immersion for 30 minutes, Undried: Wet state
(2) Test results Both test sheets (Comparative Example Sheets 1 and 2) prepared with an aqueous composition (Comparative Examples 1 and 2) prepared without using a silane coupling agent were wet in both dry tests. Even in the test in the state, it was observed that blisters and cracks (breakage of the coating) were clearly observed on the coating surface (evaluation: x).

  On the other hand, all the Example sheets 1-8 created with the aqueous composition (Examples 1-8) prepared using the silane coupling agent (an epoxy group, a methacryloxy group, an acryloxy group, an amino group) In both the dry state test and the wet state test, almost no swelling or cracks were observed in the film by visual and microscopic observation (evaluation: ◯). In particular, Example Sheets 5 to 8 prepared with an aqueous composition (Examples 5 to 8) prepared using an acrylic resin having a hydroxyl group (Adhesive Resin 2) as an adhesive resin were not cracked in the film even by microscopic observation. It was not recognized, and it was confirmed that the film had excellent stretchability (base followability) (evaluation: ◎). Moreover, the Example sheet | seat 8 created with the aqueous composition (Example 8) prepared using the silane coupling agent which has an amino group among them was equipped with the outstanding extending | stretching property (underground followability).

  On the other hand, both Comparative Example Sheets 3 and 4 prepared with an aqueous composition (Comparative Examples 3 and 4) prepared using a silane coupling agent having a mercapto group are both in a dry state test and a wet state test. The occurrence of cracks on the surface of the coating film was hardly observed visually, and the stretchability (base followability) was improved as compared with Comparative Examples Sheets 1 and 2, but the results of microscopic observation were slightly cracked when compared with the Example sheets. It was recognized that it was not sufficient for use as a product (evaluation: Δ).

  Based on the above, formed from an aqueous composition prepared by using a non-hydraulic inorganic composition containing calcium hydroxide and an adhesive resin together with a silane coupling agent having an epoxy group, a methacryloxy group, an acryloxy group or an amino group It was confirmed that the coated film had stretchability and followability to the base, and the occurrence of cracks (breakage of the film) was significantly suppressed during stretching. In addition, the film has improved water resistance, and the film retains stretchability and followability to the substrate, even after being soaked in water, and cracks (breaking of the film) occur during stretching. It was confirmed that was significantly suppressed.

Experimental example 3 Construction test: Check for cracks and cracks in the entrance and exit corners (no / soaked in water)
From the results of the above experimental examples 1 and 2, the construction test was carried out according to the following method assuming that it was actually used as wallpaper.

(1) Test method Each test sheet was prepared to 6 cm (length) x 21 cm (width), and a double-sided tape (with release paper) was attached to the opposite side of the coating surface (uppotac base paper surface), and processed under the following conditions. Next, the release paper of the double-sided tape was peeled off, and affixed to the wallpaper construction table (test table) having a staircase shape while pressing with a spatula with a special spatula (exit corner: applied by bending the test sheet while bending the test sheet). : Hold the entrance corner from the top of the test sheet with a spatula and pull the test sheet while constructing). After the construction, the coating state at the protruding corner and the entering corner was visually observed.

<Processing conditions>
A: As it is (without water immersion): Dry state B: Water immersion for 30 minutes, Undried: Wet state
(2) Test results Both test sheets (Comparative Example Sheets 1 and 2) prepared with an aqueous composition (Comparative Examples 1 and 2) prepared without using a silane coupling agent were wet in both dry tests. Also in the test in the state, it was confirmed that cracks were generated on the surface of the coating at the corners (evaluation: x).

  On the other hand, all the Example sheets 1-8 created with the aqueous composition (Examples 1-8) prepared using the silane coupling agent (an epoxy group, a methacryloxy group, an acryloxy group, an amino group) In both the dry state test and the wet state test, almost no cracks or defects were found on the surface of the coating film (evaluation: ◯). In particular, Example Sheets 5 to 8 prepared with a coating agent (Examples 5 to 8) prepared using an acrylic resin having a hydroxyl group (Adhesive Resin 2) as an adhesive resin are included even when observed with a magnifying glass. No cracks were observed on the coating surface at both corners. In particular, the coating surface applied with Example Sheet 8 prepared with a coating agent (Example 8) prepared using a silane coupling agent having an amino group was extremely good in both the corners into and out.

  On the other hand, Comparative Example Sheets 3 and 4 prepared with a coating agent (Comparative Examples 3 and 4) prepared using a silane coupling agent having a mercapto group are both compared in a dry state test and a wet state test. Although the degree of cracking on the coating surface at the protruding corner was less than that of Example Sheets 1 and 2, cracking was suppressed, but it was recognized that it was not sufficient for use as a product as compared with Example Sheet (Evaluation: Δ ).

  As described above, the above construction test well reflects the results of Experimental Examples 1 and 2, and the epoxy group, methacryloxy group, acryloxy group are added to the non-hydraulic inorganic composition containing calcium hydroxide and the adhesive resin. It was confirmed that a sheet prepared by applying an aqueous composition prepared by using a silane coupling agent having a group or an amino group in combination was extremely effective as wallpaper. In addition, since this sheet is excellent in water resistance and excellent in cracking resistance even in a wet state of water, a water-based paste is applied to the back of the sheet during wallpaper construction, or dry glue is applied to the back of the sheet in advance. In addition, it was confirmed that the sheet can be used by infiltrating with water during wallpaper construction.

Experimental Example 4 Curling Resistance Test From the results of the above Experimental Examples 1 to 3, Example Sheets 1 to 8 useful as wallpaper were subjected to a curling resistance test (curling resistance after moisture absorption drying and curling resistance curl) according to the following method. Sex). For comparison, Comparative Examples 1 and 2 were similarly tested.

(1) Test method
(a) Curling resistance after moisture absorption and drying Water spray is sprayed on the coating surface of each test sheet, and after moisture absorption, it is naturally dried at room temperature, and the degree of curling of the sheet is visually observed before and after moisture absorption. evaluated.

(b) Anti-winding curl resistance Each test sheet was wound around a paper tube having a diameter of about 4 cm with the coating surface facing inward, left undisturbed at room temperature for 5 days, and the curled state was observed.

(2) Test results The test sheet (Comparative Example Sheets 1 and 2) prepared with an aqueous composition (Comparative Examples 1 and 2) prepared without using a silane coupling agent had slightly curled edges before moisture absorption. Further, it was observed that the curl becomes stronger after moisture absorption drying (evaluation: x), and that the curl curl is strong even after unwinding from the paper tube (evaluation: x). On the other hand, all the Example sheets 1-8 created with the coating agent (Examples 1-8) prepared using the silane coupling agent (an epoxy group, a methacryloxy group, an acryloxy group, an amino group) are hygroscopic. It was observed that neither before nor after moisture-absorbing drying was curled (evaluation:）), and curl curl was hardly generated (evaluation:）).

  From this, it was created by applying an aqueous coating agent (aqueous composition) prepared by using calcium hydroxide and an adhesive resin together with a silane coupling agent having an epoxy group, a methacryloxy group, an acryloxy group or an amino group. The sheet does not remain curled even if it is circulated or stored in a state of being wound around a paper tube, so that it is excellent in handling at the time of use, and curling that tends to occur at the end is significantly suppressed. For this reason, it was confirmed that clogging did not occur even when used in a machine such as a printing press and the workability was excellent.

Experimental Example 5 Friction Resistance Test Using the aqueous compositions (Examples 1 to 8 and Comparative Examples 1 to 4) coated sheets (Example sheets 1 to 8 and Comparative Examples sheets 1 to 4) prepared above, A friction resistance test was performed according to the method.

  Specifically, according to JIS A 6921 6.3.2, using the friction tester type II specified in JIS L 0849, (a) dry friction test (load 200g, reciprocation 25 times) and (b) wet A friction test (load 200 g, number of reciprocations 5 times) was performed. The dry friction test was performed using a friction element coated with a dry cloth, and the wet friction test was performed using a friction element coated with a cloth soaked with water. After rubbing, the color difference between the friction part and the non-friction part was visually observed, and the presence or absence and degree of adhesion of the coating film piece to the rubbed cloth side were confirmed.

  As a result, test sheets (Example sheets 1-8) prepared with aqueous compositions (Examples 1-8) prepared using a silane coupling agent were used not only in the dry friction test but also in the wet friction test. There was almost no color difference between the friction part and the non-friction part, and adhesion of the coating film piece to the rubbed cloth side was hardly recognized. In contrast, test sheets (Comparative Example Sheets 1 and 2) prepared with an aqueous composition (Comparative Examples 1 and 2) prepared without using a silane coupling agent were used in both the dry friction test and the wet friction test. There was a significant color difference between the friction part and the non-friction part, and the adhesion of the coating film pieces was clearly observed on the rubbed cloth side. This tendency was particularly remarkable in the wet friction test.

  From this result, it was found that a film excellent in friction resistance and water resistance () can be formed by using the aqueous composition of the present invention prepared using a silane coupling agent.

(2) Test results Test sheets (Comparative Example Sheets 1 and 3) prepared with an aqueous composition (Comparative Examples 1 and 2) prepared without using a silane coupling agent were: ”, Although some abrasion resistance was observed (evaluation: △), (b) From the results of the wet friction test, it was confirmed that the film was re-dissolved in water and the coating was heavily worn in the presence of water (evaluation) : X). On the other hand, the implementation created with the aqueous composition (Examples 1-8, Comparative Examples 3 and 4) prepared using the silane coupling agent (an epoxy group, a methacryloxy group, an acryloxy group, an amino group, a mercapto group) In each of Example Sheets 1 to 8 and Comparative Examples 3 and 4, the result of “grade 5” was obtained in both (a) the dry friction test and (b) the wet friction test, and the wear resistance was remarkably improved. (Evaluation: ◎). From this, the film formed from the aqueous composition prepared using the silane coupling agent not only has improved wear resistance, but also prevents re-dissolution of the inorganic composition due to water infiltration, and is water resistant. Was confirmed to be improved (suppression of resolubility).

Examples 9-15
Using an acrylic resin having a hydroxyl group and polyvinyl alcohol as a thermoplastic adhesive resin, an aqueous composition of the present invention for forming a flexible film was prepared according to the formulation described in Table 2. These aqueous compositions have good storage stability, and the film formed from the composition is more experimental than the film formed from an aqueous composition prepared without using a silane coupling agent. As shown in 1 to 5, flexibility, stretchability, water resistance and abrasion resistance (dry friction resistance, wet friction resistance) are improved.

Claims (7)

An aqueous composition for forming a flexible coating comprising a non-hydraulic inorganic material containing lime or dolomite , an adhesive resin, a silane coupling agent and water,
The aqueous composition in which the silane coupling agent has at least one reactive functional group selected from the group consisting of an epoxy group, a methacryloxy group, an acryloxy group, and an amino group . The aqueous composition according to claim 1, wherein the adhesive resin has at least one functional group selected from the group consisting of an ester group, a ketone group, a carboxyl group, and a hydroxyl group as a functional group. The aqueous composition according to claim 1 or 2, wherein the adhesive resin is an acrylic resin or a polyvinyl alcohol resin. Furthermore, a chelate compound is contained, The aqueous composition of any one of Claim 1 thru | or 3 characterized by the above-mentioned. The sheet | seat or board prepared by apply | coating the aqueous composition as described in any one of Claims 1 thru | or 4 on the surface of a sheet-like or board-like base material. 6. The sheet or board according to claim 5, wherein the surface of the sheet or board coated with the aqueous composition is further subjected to antifouling treatment. The method of manufacturing the sheet | seat or board as described in Claim 5 or 6 which has the following (a) process or (a) and (b) process:
(A) The process of apply | coating the aqueous composition in any one of Claims 1 thru | or 4 to the sheet-like or board-like base material surface,
(B) The process of carrying out the antifouling process of the application surface of the said composition.