JP2001187867A - Coating composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating material having slaked lime as the major component which excels in opacifying power with a small coating amount, and a coated product having been coated with the same. SOLUTION: The coating composition comprises slaked lime, a polymer component, and water with (1) the state in a container, (2) the coating workability, (3) the low temperature stability, (4) the external appearance of a coated film, (5) the alkali resistance, (6) the washing resistance, and (8) the contrast ratio of the coating fluid or the dried coated film which meat at least second grade coating properties regulated by JIS K 5663-1995. The coated product is obtained by applying the coating composition on a material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-based paint suitable for decorative coating of interior or exterior such as walls and ceilings of various buildings. More specifically, the present invention forms a coating film having a calm matte texture peculiar to plaster and a humidity control function, while satisfying various coating properties and coating film properties required as an aqueous coating material. To paint. Further, the present invention relates to a coated article obtained by applying the coating composition.

[0002]

2. Description of the Related Art In addition to the calm and profound finish, plaster has excellent functions such as humidity control (moisture absorption and moisture release), anti-condensation and anti-mold properties. It is a building material that has long been used as a painted wall material.

However, plastering requires plastering work that requires skill, and the finish is likely to vary due to the skill of the worker. In addition, the necessity of multiple repetitions (painting and rubbing) makes the construction efficient. However, there is a disadvantage that the construction period is long and the construction cost is high.

For this reason, in order to finish the interior wall of a recent residential building, many finishing methods such as PVC cloth application and synthetic resin emulsion painting have been adopted, but recently, chemical sensitivity, sick house syndrome, etc. The harm of such chemical substances has become a problem, and natural materials such as plaster have been reviewed again.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a water-based paint mainly composed of slaked lime which is a component of a plaster wall material. More specifically, the present invention has the performance as a water-based paint, the coating film formed has a texture unique to the stucco wall and coating film properties including alkali resistance and washing resistance, as well as humidity control properties, It is an object of the present invention to provide a coating composition having excellent coating functions such as mold resistance and fire resistance.

Further, the present invention provides a coated product having a coating film formed from the above-mentioned water-based coating material, and more specifically, a coated product having useful functions such as humidity control and dew condensation prevention based on the coating film function. The purpose is to do so.

[0007]

Means for Solving the Problems The present inventor has paid attention to the excellent aesthetics and functions of stucco, and has the quality of synthetic resin emulsion paint specified in JIS K 5663 and the texture and function peculiar to stucco. After intensive studies with the aim of developing a water-based paint, the aqueous composition of the present invention prepared according to the method of preparing a water-based paint by blending a polymer component and water with slaked lime, which is a main component of the plaster, has a storage stability. It has been found that it has excellent properties and coating workability and meets the above-mentioned object. Further, a coating film formed from such a coating composition exhibits sufficient toughness even if it does not contain a fiber material such as susa, which has been essential for a plaster wall material in the past. By eliminating the use of fiber material, it is possible to make a thin coating with a smaller coating amount,
It has been found that a coating film can be easily and beautifully finished by a roller, a spray or the like.

Further, the present inventor has further studied based on this finding. As a result of adding a specific amount of titanium oxide as a pigment to the above-mentioned coating composition, the present coating composition has extremely good functions such as humidity control. It is possible to conceal the construction surface with a small amount of application, and found that it is excellent in film formability, and from the above, according to the coating composition of the present invention, at low cost and with a small amount of labor, peculiar to calm plaster. It was confirmed that a coating film having a texture and exhibiting functions such as humidity control properties and dew condensation prevention properties could be formed.

The present invention has been developed based on such knowledge.

That is, the present invention provides the following 1. ~ 9. The coating compositions are as follows: A paint composition containing slaked lime, a polymer component and water, wherein the coating liquid or its dried coating film is (1) a state in a container, (2) workability of coating, (3) low-temperature stability, (4 ) Coating appearance, (5) Alkali resistance, (6) Washing resistance, (7) Concealment ratio is JIS
A coating composition which satisfies the properties of at least two paints specified in K 5663-1995. 2. 2. The coating composition according to 1, wherein the hiding power of the dried coating film is 500 μ or less. 3. 3. The coating composition according to 1 or 2, wherein the coating composition does not contain a fiber material. 4. 4. The coating composition according to any one of 1 to 3, which contains slaked lime in a ratio of 30 to 80% by weight in terms of solids. 5. 10 parts by weight of polymer component per 100 parts by weight of slaked lime
5. The coating composition according to any one of 1 to 4, which is contained in a proportion of 70 parts by weight (solid basis). 6. 6. The coating composition according to any one of 1 to 5, wherein the polymer component is an acrylic resin. 7. 2-30 titanium oxides per 100 parts by weight of slaked lime
7. The coating composition according to any one of 1 to 6, which is contained in parts by weight (solid basis). 8. 8. The coating composition according to any one of 1 to 7, wherein the solid content is 50 to 70% by weight. 9. 9. The coating composition according to any one of 1 to 8, which has a viscosity of 300 to 3000 centipoise at room temperature.

[0011] The present invention also relates to a coated material such as a decorative material or a building material having a coating film formed from the above-mentioned coating composition.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION (1) Coating composition The coating composition of the present invention is a coating composition containing slaked lime, a polymer component and water. The properties of the coating solution and the appearance and physical properties of the dried coating film Is the Japanese Industrial Standard JIS K 5663-1995
(1) State in a container, (2) Painting workability, (3) Low temperature stability, (4) Appearance of coating film, (5) Alkali resistance, (6) Resistance It meets the requirements of cleanability and (7) concealment rate.

Specifically, the coating composition of the present invention
When measured according to the method of JIS K 5400 according to the provisions of K 5663-1995, at least the following quality (JIS K 5663-199
It is a coating composition having 5): (1) State in a container: When stirred, there is no lump and the entire contents become uniform: (2) Painting workability: Coating work is difficult with two coats No: (3) Low temperature stability: No deterioration when cooled to -5 ° C: (4) Appearance of coating: Appearance of coating is normal: (5) Alkali resistance: Saturated calcium hydroxide solution (20 ± 1
(6) Washing resistance: withstands 100 washes: (7) Hiding ratio: 0.95 or more Furthermore, the coating composition of the present invention has a water resistance (JIS K 5400). 8.
Regarding item 19), there is no abnormality when immersed in deionized water for 96 hours (5.9 of JIS K 5663-1995), and accelerated weather resistance (JIS K 5400
Regarding 9.8.1), it is preferable that the degree of chalk is 8 or more, there is no blistering, peeling or cracking, and the degree of color change is not greater than that of the sample (5.12 of JIS K 5663-1995). ,
In addition, the concealment ratio was 0.93 or more (5.8 in JIS K 5663-1995), and the weather resistance (9.9 in JIS K 5400) showed no change in color without swelling, peeling, or cracking after a 12-month test period. The degree of chalk is not large compared to the sample (JIS K 56
It is preferable to meet the requirement of 5.13) of 63-1995.

[0014] The coating composition of the present invention is not particularly limited by its drying time, but is JIS K 5663-1995.
In accordance with 5.6 of JIS K 5400, when prepared according to the test method of 6.5, prepare a semi-cured state at 20 ° C within 2 hours and a semi-cured state at 5 ° C within 4 hours. Is preferably performed. This can be performed by appropriately adjusting the solid content, the water content, and the viscosity to be added to the coating composition.

The slaked lime used in the present invention is not particularly limited as long as it is usually used as a component of a plaster wall material. For example, various types of calcium hydroxide can be used regardless of hydraulic or air-hardness, including industrial slaked lime. Slaked lime that has been subjected to a treatment such as coloring can also be used.

The mixing ratio of slaked lime in the coating composition depends on the performance required as an aqueous coating such as storage stability, coating workability and film formability, specifically JIS K5663-1.
There is no particular limitation as long as it satisfies the properties of at least two kinds of paint specified in 995, and the solid content of the paint composition is 10%.
It can be appropriately selected from a range in which the mixing ratio per 0% by weight is 30 to 80% by weight. Preferably 4
It is 0 to 70% by weight, more preferably 50 to 70% by weight.

The polymer component used in the present invention comprises:
Any material that is miscible with slaked lime may be used, such as vinyl acetate, polyacrylate, acrylic-styrene copolymer, ethylene-vinyl acetate copolymer, vinyl acetate-acryl copolymer, and ethylene-vinyl chloride copolymer. Polymers, vinyl acetate-veova copolymers, styrene / butadiene-based, epoxy-based and urethane-based polymers are included. The polymer component enhances the adhesive strength between slaked limes in the coating composition, the adhesive strength between slaked lime and additives described below, and the adhesive strength between the coating composition and the object to be coated, and as a result, on the surface of the object to be coated. It has the function of preventing cracks in the laminated coating layer (coating layer) and improving the toughness of building materials.

Preferred polymer components include synthetic polymers such as acrylic resin (polyacrylate, acryl-styrene copolymer), vinyl acetate, and styrene / butadiene rubber. As long as these polymer components have the above properties, their molecular weight, degree of polymerization, viscosity and the like are not particularly limited. These may be used alone or in any combination of two or more. The form of the polymer component to be added to slaked lime is not particularly limited, and may be any of an emulsion form, a powder form, and the like.
When blended as an emulsion, the emulsion may be obtained by emulsion polymerization of a monomer having a polymerizable unsaturated double bond, or may be obtained by dispersing a previously synthesized resin in an aqueous dispersion medium using a dispersant. ,
Further, there may be mentioned those prepared by dispersing a powder type polymer in water or the like.

The mixing ratio of the polymer component is determined by the performance required for an aqueous paint such as storage stability, coating workability and film formability, and more specifically, at least two paints specified in JIS K 5663-1995 described above. There is no particular limitation as long as the range satisfies the properties, and it can be appropriately determined according to the type of the polymer component used. Specifically, slaked lime 10
The mixing ratio of the polymer component to 0 part by weight can be usually selected and adjusted from a range of 10 to 70 parts by weight (solid basis). It is preferably 10 to 50 parts by weight, more preferably 20 to 40 parts by weight, and still more preferably 25 to 35 parts by weight.

In the present invention, in addition to the slaked lime and the polymer component, a pigment and various additives can be further blended. Such additives include, for example, inorganic materials, inorganic fine aggregates, defoamers, thickeners, rheology modifiers,
Dispersants, surfactants, wetting agents, plasticizers, preservatives and the like can be exemplified.

The pigment is not particularly limited as long as it is used for an aqueous paint, and any pigment can be employed, but an inorganic pigment is preferred. Examples of such inorganic pigments include white pigments such as titanium oxide, zinc white, lithopone, and antimony white: black pigments such as carbon black and iron oxide: cadmium red, red iron oxide,
Red pigments such as molybdenum red: yellow pigments such as graphite, titanium yellow, cadmium yellow, and iron oxide: green pigments such as chromium oxide and titanium cobalt green: blue pigments such as ultramarine blue: talc, kaolin clay, aluminum hydroxide, and carbonic acid An extender such as calcium and bentonite can be exemplified. The proportion of the pigment to be blended in the coating composition of the present invention is not particularly limited, and can be appropriately selected and adjusted according to a desired color (lightness, chromaticity, saturation).

The pigment is preferably titanium oxide. There is no particular limitation on the type of titanium oxide, rutile type and anatase type. In general, the rutile type has better light resistance and hiding power than the anatase type. The particle size and shape are not particularly limited, and can be appropriately selected from commercially available products according to the purpose. Generally, titanium oxide having a substantially spherical shape having a particle size of 0.2 to 0.5 μm or 0 is used. .0
Ultrafine particles having a particle size of 1 to 0.05 μm, plate-like titanium oxide for absorbing ultraviolet light, and the like are known.

When titanium oxide is compounded, the compounding ratio is 2 to 30 parts by weight, preferably 4 to 20 parts by weight, more preferably 8 to 10 parts by weight based on 100 parts by weight of slaked lime.
A range of 15 parts by weight can be mentioned.

By blending titanium oxide in the coating composition in such a ratio, the coating composition of the present invention can cover the surface to be coated with a smaller amount of coating, and can form a coating formed with such a small amount of coating. The film has a desired appearance and physical properties even though it is a thin coating film, and can exhibit functions such as humidity control and accompanying dew condensation prevention.

Such a coating film is formed by coating the coating composition of the present invention.
1m^TwoUse at least 100 g per solid weight
Can be achieved by Coating film such as humidity control
Performance improves with increasing coating composition application rate.
In view of such a function, the present invention relates to the application of a coating composition.
It does not limit the upper limit. However, paint
Considering the film forming property, cost and coating workability of
The coating composition of the invention is 1 m ^Two100 per solid weight conversion
g to 1000 g, preferably 100 to 500 g, more preferably
Preferably, a coating amount of 200 to 300 g is used.
New

The coating composition of the present invention can be adjusted so that the hiding power of the formed coating film is 500 μm or less, preferably 300 μm or less, more preferably 200 μm or less, and further preferably 100 μm or less. In the present invention, the hiding power refers to a minimum film thickness at which a color cannot be recognized on the base material. Specifically, when observed with the naked eye through a coating film coated on a black-and-white plate, the black-and-white background Is the minimum film thickness at which it is impossible to determine

Examples of the inorganic material include calcium carbonate, barium carbonate and barium hydroxide. When the inorganic material is blended, the blending ratio can be set as appropriate, and a range of 5 to 100 parts by weight with respect to 100 parts by weight of slaked lime can be exemplified.

Examples of the inorganic fine aggregate include silica sand, cold water sand, mica, ceramic sand, glass beads, perlite, vermiculite and the like. Although the particle size is not particularly limited, a range of 60 to 130 mesh or 80 to 100 mesh can be exemplified. When blending the inorganic fine aggregate, the blending ratio can be set as appropriate, 5 to 100 parts by weight, preferably 10 to 50 parts by weight with respect to 100 parts by weight of slaked lime,
More preferably, a range of 20 to 30 parts by weight can be exemplified.

The defoaming agent is not particularly limited as long as it is usually used by being blended into a paint or a building spray material, and any of them can be employed. For example, various foam inhibitors and foam breakers such as octyl alcohol, glycol derivatives, cyclohexane, silicon, pluronic surfactants, and polyoxyethylene alkyl phenyl ether can be mentioned. The mixing ratio of these components can also be appropriately selected and is not limited, but is usually in the range of 0.01 to 5 parts by weight, particularly 0.1 to 2 parts by weight, per 100 parts by weight of slaked lime.

Examples of the thickener include cellulosics such as methylcellulose, hydroxyethylcellulose and hydroxypropylmethylcellulose; polysaccharides such as saccharose and glucose; acrylics; and others, aluminum stearate, zinc stearate, organic bentonite, silica gel, polyvinyl alcohol, Examples thereof include sodium alginate, silicic acid, bentonite, and sodium caseinate.

The coating composition of the present invention may further contain diatomaceous earth or zeolite (including synthetic zeolite). Diatomaceous earth is attracting attention as a natural material that does not contain harmful substances like stucco.By mixing diatomaceous earth and zeolite, it improves and improves the humidity control and dew condensation prevention of the coating film, and also has heat insulation and deodorizing effects And other functionalities can be provided.

The coating composition of the present invention contains slaked lime in an amount of 30 to 80% by weight, preferably 40 to 70% by weight, more preferably 50 to 70% by weight, in terms of solid weight, per solid content.
3% to 55% by weight, preferably 4% by weight;
Preferably, the pigment is contained in a proportion of from 50 to 50% by weight, more preferably from 10 to 30% by weight.
It is preferably contained in a proportion of 15% by weight, preferably 2 to 10% by weight, more preferably 3 to 8% by weight. These components have a solid content of 40 to 80% by weight, preferably 5 to 100% by weight of the coating composition of the present invention.
The composition is adjusted so as to be 0 to 70% by weight.

The coating composition of the present invention can be prepared by blending various fiber materials such as hemp, Japanese paper, palm, wood pulp, synthetic fiber and glass fiber, which have been conventionally blended into stucco wall material for the purpose of preventing cracking. However, one of the features is that a coating film excellent in toughness and film forming property can be formed without cracking.

In general, the presence of the fiber material in the paint is caused by the problem that the discharge port of the spray or the gun is blocked at the time of painting, poor workability (painting workability) such as necessity of ironing down after the painting process, and This is undesirable because the coating film surface tends to be fuzzy or the coating surface becomes non-uniform, and there is a problem with the film forming property, and the coating film tends to be flammable (flammable) with a reduced function. Therefore, in order to form a thin coating film having excellent appearance and film-forming properties with a low coating amount, a coating composition containing no fiber material is preferable. However, the present invention does not restrict inclusion of a fiber material in the coating composition as long as it does not affect the coating workability, the film forming property, the appearance of the coating film, and the like.

The coating composition of the present invention is prepared by mixing the above components with water and mixing with a conventional method of coating, for example, using a coating preparation equipment (mixer, shaker, mill, kneader, etc.) to obtain slaked lime, A polymer component, a pigment, and the like can be stably dispersed in water to prepare a paint in various forms such as a spray liquid, a slurry, and a putty.
Mixing can be usually performed at 20 to 95 ° C.

At this time, the coating composition is prepared so as to have a desired viscosity according to various coating methods such as spray coating (air spray, airless spray, etc.), brush coating, roller coating, putty coating and coat coating. Preferably, the viscosity range can be appropriately selected and adjusted in consideration of coating workability, leveling, coating film appearance, and the like. Usually, it is prepared to be in the range of 100 to 60,000 centipoise at room temperature. For example, the viscosity of the liquid coating composition is 300 to 3000 centipoise at room temperature, preferably 500 to 2000 centipoise, more preferably 700 to 1300 centipoise, and still more preferably 800 at room temperature so as to be suitable for brush coating, roller coating or spray coating. A range of １０００1000 centipoise can be mentioned. Also, as the viscosity of the putty-like coating composition,
Although not limited, a range of 20,000 to 60,000 centipoise at room temperature, preferably 30,000 to 50,000 centipoise, more preferably 40,000 to 50,000 centipoise can be mentioned.

The coating composition of the present invention can be used for coating base materials and base materials such as ceilings and walls (inner and outer walls) of various buildings, and for coating various base materials such as building materials composed of inorganic and organic base materials. Can be used for Further, after the coating composition of the present invention is applied according to a conventional method, it is possible to further apply a design finish by performing patterning with an uneven patterning roller or treating the coating film surface. (2) Painted article The present invention also provides a coated article obtained by applying the above coating composition.

The substrate (substrate) to which the coating composition of the present invention is applied is not particularly limited, and paper, nonwoven fabric or woven fabric (fibrous sheet) composed of various fibers, various boards, etc. Can be mentioned. In addition, the surface of such a base material may be subjected to various treatments such as a sealer treatment.

The paper may be any of Japanese paper, Western paper (high quality paper, medium quality paper), kraft paper, tissue paper, backing paper, resin impregnated paper, cardboard, cardboard, etc. Paper that has been applied and is suitable for application of wallpaper, such as flame-retardant backing paper and non-combustible paper, is also included. Examples of the fibrous sheet include a porous woven fabric, a nonwoven fabric, and a knitted fabric obtained by using natural fibers; glass fibers; or synthetic fibers such as polypropylene, acrylic, nylon, polyester, polyamide, and vinylon as constituent materials. it can. The above materials may be used alone or in any combination of two or more. As the board, for example, a board used for an interior (a wall or a ceiling in a room) or an exterior of a building can be widely used. Concretely, wood board, plywood, medium density fiber board, plastic board, cement mortar, concrete board, PC panel, ALC panel, asbestos slate, gypsum board, particle board, foam cement board, wood chip cement board, calcium silicate A board etc. can be illustrated. Preferred are gypsum board, gypsum particle board, wood board, medium density fiber board, plastic board and the like.

The method of applying the coating composition to the substrate is not particularly limited, and examples thereof include a coating method using a roll coater, a flow coater, a brush or a roll, and a spraying method using a spray or various guns. it can. According to spray coating using compressed air as an example, for example, first, a spray liquid or slurry of a coating composition adjusted to an appropriate viscosity with an appropriate amount of water is sprayed on one surface of a substrate. By this spraying, the coating composition forms a coating film on the surface of the substrate and is integrated with the substrate. At this time, the polymer component contained in the coating composition firmly binds components such as slaked lime, and conjugates the coating composition to the surface of the base material to integrate the coating layer with the base material. Thereby, delamination can be prevented. Next, the coating composition applied to the substrate is dried and cured.
Such a method can be easily carried out by applying the coating composition to the substrate and then subjecting it to natural drying or ventilation drying. The coated product of the present invention can be finished by applying a design to the surface of the further formed coating layer with a roller having a concavo-convex pattern or polishing and polishing with a file or various types of polishing machines, if necessary.

The thickness of the coating film formed from the coating composition of the present invention is not particularly limited as long as the coating surface of the substrate is sufficiently covered and covered. The coating composition of the present invention can be adjusted so that the hiding power of the formed coating film is 500 μ or less as described above. Therefore, as a film thickness of 500μ or more, preferably 300μ or more,
More preferably 200μ or more, further preferably 100μ
Although the above thicknesses can be mentioned, in view of the physical properties and functions of the coating film such as cost, coating workability and film forming property, and humidity control property, it is usually 0.1 to 3 mm, preferably 0.1 to 3 mm.
A range of 2 to 2 mm, more preferably 0.3 to 1.5 mm, and still more preferably 0.5 to 1 mm can be exemplified.

A coated article having a coating film formed from the coating composition of the present invention has excellent humidity control properties (moisture absorption and moisture release properties),
While exhibiting a high dew condensation preventing effect, it exhibits a plaster-specific texture (appearance and texture such as color, gloss, and fineness). In addition, the painted product thus produced does not cause inconvenience such as unevenness in color, unevenness in gloss and unevenness in blown light, unevenness in color, and unevenness in various places where building materials are arranged, such as direct sunlight, oblique light, lighting, and shading. With a color, luster and texture. Such properties of painted objects are useful for various building materials such as wall materials and ceiling materials.

In general, for building materials such as boards and cloths,
Treatment of joints and joints between building materials after construction tends to be a problem. According to the coating material (building material) prepared by applying the coating composition of the present invention containing no fiber material, after being applied to a wall or the like,
By polishing and polishing the surface of the coating film at the joints and joints of the building material, it is possible to achieve a continuous and uniform finish almost indistinguishable from the surrounding coating film layer. A painted product (building material) prepared by applying the coating composition of the present invention containing no fiber material
According to this, there is also an advantage that repair after the work is performed on a wall or the like can be easily performed. That is, when the building material is damaged or stained after the construction, it is possible to partially repair only the damaged portion by using the coating composition of the present invention containing no fiber material. Specifically, such repair is performed by first shaving the damaged portion, filling the portion with the coating composition of the present invention having the same composition as the peripheral coating layer but having a reduced water content and increased viscosity, and after curing and curing. The polishing can be performed by polishing the surface as required. By polishing, it becomes possible to repair and repair the damaged portion so that the damaged portion cannot be distinguished from other peripheral regions.

In addition, this is construction material construction (interior / exterior construction)
It is also useful in That is, when the painted object (building material) of the present invention, in particular, the interior and exterior panels are nailed or screwed on the wall base material, the nail head recesses on the surface of the building material formed by nailing (screw) as described above are relatively small. A high-viscosity coating composition (putty) is filled, and if necessary, a coating composition (spray liquid, slurry) is further applied thereon to cure and cure. By grinding and polishing, the nailing portion can be constructed so that the nailing portion is hardly recognized (see FIG. 1). Thereby, the sticking of the building material with the adhesive can be avoided. (3) Construction method of interior and exterior of building Further, the present invention relates to a construction method of interior and exterior of a building using the coating composition or the painted product (building material). Examples of the construction method of the present invention include the following embodiments. A. A coating method, which comprises applying the coating composition of the present invention to the surface of a building base material, drying the coating composition, and optionally polishing the coating film surface, if necessary. B. (i) a step of connecting a plurality of the building materials of the present invention to the building base material, (ii) a step of filling or applying the coating composition of the present invention to the joint of each building material and drying, and (iv) A method for constructing interior and exterior of buildings, including a step of polishing and polishing the coating film surface as necessary. C. (i) a step of arranging a plurality of building materials of the present invention in a building base material, (ii) a step of filling or applying the coating composition of the present invention to a joint of each building material, if necessary, (iii) the joining. Covering the part with a reinforcing member, (iv) a step of applying the coating composition of the present invention on the reinforcing member and drying, and (v) if necessary, a step of polishing and polishing the coating film surface, Construction method of building interior and exterior.

The construction method of the interior and exterior of a building according to the present invention includes a method of applying and laminating the above-mentioned coating composition of the present invention directly on a base material (a base material for an inner and outer wall) of an inner and outer wall and a ceiling of a building; Base material of the present invention (cloth, panel, board)
And a method of attaching or arranging them.

Specifically, the coating method of the present invention is to apply the coating composition of the present invention directly to the surface of the base material for the inner and outer walls of a building, preferably having a viscosity of 300 to 3000 centipoise at room temperature.
A coating composition of preferably 500 to 2000 centipoise, more preferably 700 to 1300 centipoise is applied, dried until solidified, and then, if necessary, the surface of the coating layer laminated on the inner and outer wall base material is polished. It can be done by shearing.

Further, the construction method of the present invention is characterized in that the coating material of the present invention (building material such as cloth, panel, board, etc.) is applied to the inner and outer wall base material of the building or the inner and outer wall frames and lower crossbars provided on the base material. A step of abutting and arranging each side end face, a coating composition of the present invention in a surface region of a joint portion of each building material, suitably having a viscosity at room temperature of 300 to 3000 centipoise, preferably 500 to 2000 centipoise, more preferably Is 70
The coating can be carried out by applying a coating composition of 0 to 1300 centipoise, drying until solidified, and then, if necessary, polishing the surface of the coating layer region.

When the interior and exterior panels are used as a building material, there is no particular limitation on the manner in which the panels are connected, but an example is the connection method shown in FIG. In particular,
A bumping method (FIG. 2 (a)) for forming a flat panel surface by abutting the side surfaces of a panel having vertical side surfaces to form a continuous panel surface (FIG. 2 (a)). A butt V-groove method (FIG. 2B) in which the side surfaces are abutted and connected to form a panel surface having a V-shaped groove in the connected portion (FIG. 2B), The interior and exterior panels each forming a connection such as phase-locking or phase-locking or main-linking are connected to each other with their side surfaces in contact with each other, and a panel surface having a square groove in the connecting portion is formed. An example of a butt or eye-opening method (FIG. 2 (c)) is shown.

When a groove is formed at the joint portion of the panel as shown in FIGS. 2B and 2C, the same as the coating composition applied to the groove portion of the joint before the application of the coating composition. Filling as a sealing material a coating composition having a high viscosity (low water content), preferably having a viscosity of 20,000 to 60,000 centipoise at room temperature, preferably 30,000 to 50,000 centipoise, more preferably 40,000 to 50,000 centipoise. Is preferred. Prior to the application of the coating composition, the joint between the panels can be covered with a reinforcing member (FIGS. 3 and 4).

Examples of the reinforcing member include woven fabric, non-woven fabric, ceramic paper, synthetic paper, mesh, and tape-shaped members such as cold gauze. These can be used as they are or by applying a filling paint, resin, or the like to them. Or laminated film (FIG. 3). Further, a plastic or metal joiner having a substantially T-shaped or substantially E-shaped cross section can be used as the reinforcing member (FIG. 4).

According to the construction method of the present invention, especially at the joint of building materials such as cloths and panels, the joints are not conspicuous and the surface of the building materials is substantially uniform or continuous by the coating or polishing shearing in the finishing step. It is possible to provide interior and exterior with good appearance. (4) Method of Restoring Building Interior / Exterior The present invention also relates to a method of restoring a construction surface of a building interior / exterior using the above-mentioned building material or coating composition. Embodiments of such a repair / repair method include the following.

A method for repairing a damaged part of a wall surface having a coating layer formed by applying a coating composition of the present invention containing slaked lime, a polymer component and water and not containing a fibrous material, comprising: i) the step of shaving off the coating layer of the damaged part if necessary, (ii) the step of filling or applying the coating composition of the present invention to the damaged wall part and drying, and (iii) if necessary, A method for repairing a building interior / exterior wall surface, including a step of polishing and polishing the coating film surface.

[0053]

According to the present invention, the coating composition of the present invention is JIS 5663-1995
Is a one-pack type paint having slaked lime as a main component and having at least two types of synthetic resin emulsion paints (indoor paints) specified in (1). Therefore, since it is possible to fill a container with a mixture prepared in one liquid at a factory or the like in advance, it is possible to save the trouble of preparation at the site and to save the remaining material after coating in the container again. It has. In addition, since the coating composition of the present invention is prepared mainly from a natural material called slaked lime, it is used as a human-friendly indoor coating today in which `` chemical sensitivity '' or `` sick house syndrome '' has become a problem. Useful.

The coating composition of the present invention, even though it is an aqueous coating, exhibits functions such as humidity control and dew condensation prevention by containing slaked lime. For this reason, it is extremely useful as a cement-coated inner wall of an apartment or the like, or as a paint for push-in or a paint for a building material which becomes high in humidity. In addition, the coating composition of the present invention particularly containing titanium oxide as a pigment has excellent hiding power of 500 μm or less, more preferably 200 μm or less at a low coating amount without impairing humidity control properties,
Moreover, since it has excellent film-forming properties (yield, crack resistance, flexibility, and appearance), a thin coating film having useful functions such as humidity control can be formed at low cost. In addition, the coating composition of the present invention can be used for film formation (yield, crack resistance, flexibility, Toughness), which can further simplify the painting operation.

Therefore, the coating composition of the present invention is a coating composition having a very high commercial value from the viewpoints of low cost, easiness of construction, aesthetics, and functionality. In addition, the coating composition of the present invention can be suitably used for concealing a seam between cloths or between panels, and is also useful for repairing and repairing interior and exterior wall surfaces since a thin film can be formed. From this point as well, it is a paint composition with high commercial value that can be widely used for new construction and renovation construction.

[0056]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the following embodiments. However, these examples are only one embodiment of the present invention, and the present invention is not limited to these examples. Example 1 Slaked lime 40 (100%) Acrylic resin emulsion 32 (40%) (Polytron A-1450, Asahi Kasei) Titanium oxide (EP-498, Dainichi Seika) 5 (12.5%) Thickener (SP-600, Daicel) Chemical) 0.3 Antifoaming agent (KM-70, Shin-Etsu Chemical) 0.3 Preservative (PL-600, Tokyo Fine Chemicals / Yamato Chemical) 0.9 Water Residual total amount 100.0 parts by weight Paint the above components The solid content and the resin component are stably dispersed in water by stirring in a mixing mixer, and the one-component aqueous coating composition of the present invention (viscosity 800 cps (25 ° C.) B-type viscometer; solid content content 62.5%). The acrylic resin emulsion (acrylic-styrene type) used had a solid content of 50% by weight. In the above formula, the values in parentheses indicate the mixing ratio of the acrylic resin emulsion (solid content) and titanium oxide when slaked lime is 100% by weight.

Example 2 Slaked lime 40 (100%) Acrylic resin emulsion 16 (20%) (Polytron A-1450, Asahi Kasei) Titanium oxide (EP-498, Dainichi Seika) 5 (12.5%) Thickener (SP- 600, Daicel Chemical) 0.3 Antifoaming agent (KM-70, Shin-Etsu Chemical) 0.3 Preservative (PL-600, Tokyo Fine Chemicals / Daiwa Chemical) 0.9 Water Residual Total 100.0 parts by weight The solid component and the resin component are stably dispersed in water by stirring the components in a paint mixer, and the one-component coating composition of the present invention (viscosity 800 cps (25 ° C.) B-type viscometer; 54.5%). The acrylic resin emulsion used contained a solid content of 50% by weight.

Example 3 Water was added to a composition containing 40 parts by weight (solid basis) of an acrylic emulsion resin (Polytron A-1450, manufactured by Asahi Kasei Corporation) with respect to 100 parts by weight of slaked lime and kneaded. And paint composition (viscosity 800cps (25 ℃) B-type viscometer)
Was prepared.

Example 4 A composition containing 40 parts by weight of acrylic emulsion resin (Polytron A-1450, manufactured by Asahi Kasei Corporation) and 12 parts by weight of titanium oxide was added to 100 parts by weight of slaked lime. Add water, knead, paint composition (viscosity
800 cps (25 ° C.) type B viscometer).

Example 5 Water was added to a composition composed of 33 parts by weight (in terms of solids) of an acrylic resin emulsion (Polytron A-1450, manufactured by Asahi Kasei) with respect to 100 parts by weight of slaked lime, and the solid content was stabilized with a paint mixer. To prepare a coating composition of the present invention (viscosity: 800 centipoise, 25 ° C.). This was put into an airless spray gun, sprayed evenly on one side of a flame-retardant backing paper (basis weight 40 g / m ² ), and a coating film was formed by natural drying. After solidification, the surface of the coating layer formed on the paper surface was sanded with sandpaper to prepare a building interior material (cloth) having a coating layer having a thickness of about 1 mm.

The obtained interior cloth was obtained by direct sunlight, oblique light,
With respect to various lights, such as lighting and shading, on which the interior material may be applied, none of the blowing unevenness, the color unevenness, and the gloss unevenness were observed, and all had a uniform appearance. The coating film formed on the interior sheet was excellent in hiding power, film formability, flexibility and toughness, and did not crack even when the sheet was folded. Furthermore, even after being installed on the indoor wall, it had sufficient durability without cracking. In addition, the interior sheet,
It was excellent in hygroscopicity and dehumidifying properties, and was able to significantly prevent the occurrence of dew condensation even in an environment with a humidity of 80%. Further, it was confirmed that even when an open flame was brought close to the surface of the coating layer of the sheet, it did not ignite, did not generate smoke, and had excellent flame resistance.

Example 6 A paint mixer was prepared by adding 30 parts by weight (in terms of solids) of an acrylic resin emulsion (Polytron A-1450, manufactured by Asahi Kasei Corporation) to 100 parts by weight of slaked lime, and adding water to a composition comprising a thickener. And stir so that the solid content is stably dispersed.
5 ° C.). Put this in an airless spray,
Gypsum board (vertical 20cm x horizontal 20cm x thickness 1c
m, manufactured by Yoshino Gypsum Co., Ltd.) and spray dried evenly to form a coating film. After solidification, the surface of the coating layer formed on the paper surface was polished with a paper file to a thickness of 2.5 mm.
Architectural interior materials (panels) having a coating layer of
The resulting interior sheet, for direct light, oblique light, lighting and shading, etc., for various lights where the interior material may be installed, none of the blowing unevenness, color unevenness and gloss unevenness are seen,
It had a uniform appearance. The interior panel was excellent in hygroscopicity and hygroscopicity, and was able to significantly prevent the occurrence of dew condensation even in an environment with a humidity of 80%. Furthermore, even if a direct flame was brought close to the surface of the coating layer of the board, it did not ignite or generate smoke, and it was confirmed that the board had excellent flame resistance.

Next, the obtained interior panel was nailed with a coating layer on a wall base material with a nail as an interior wall material in the room. The nail head is nailed until it sinks into the inside of the coating layer. The nail head recess formed thereby is coated with 100 parts by weight of slaked lime and an acrylic emulsion resin (Polytron A).
-1450, manufactured by Asahi Kasei) 30 parts by weight (in terms of solids), and a putty-like paint (viscosity of 40,000 centipoise), which is slightly kneaded with water in a paint composition comprising a thickener, is inserted and filled, and then solidified. The nailed part and its surroundings were polished and finished with a paper file. The interior material constructed as a wall material did not become fluffy due to the sanding of the nailing part (repair part) due to sanding by sandpaper, and was unified so as to be indistinguishable from the peripheral part and was finished neatly. Moreover, the coating film formed on the interior panel had sufficient toughness and flexibility without cracking even after being applied to the indoor wall.

EXPERIMENTAL EXAMPLE 1 The coating composition prepared in Example 1 was put into an airless spray, sprayed evenly on one side of a gypsum board (length 40 cm × width 25 cm × thickness 5 mm) and solidified by ventilation drying to form a coating film. A panel having a thickness of 0.6 mm was prepared.

A humidity control test was performed using six samples of such panels. In order to properly evaluate the humidity control of the coating film layer, a moisture-proof seal was applied to the side and back surfaces of the panel (the surface on which no paint was applied) to prevent the passage of water vapor. In particular,
The building material panel of the present invention was left in an environment at a relative humidity of 65% and a temperature of 20 ° C., weighed 48 hours after the amount of water absorbed almost reached equilibrium, and then the subject was weighed at a relative humidity of 98% and a temperature of 20 ° C.
Was weighed 48 hours after the water absorption rate reached substantially equilibrium again, to determine the water absorption of the panel per unit surface area (1 m ² ). Next, the sample after the moisture absorption test was similarly transferred to an environment of a relative humidity of 65% and a temperature of 20 ° C.
After standing for a period of time, the weight was measured to determine the amount of water absorbed by the panel per unit surface area (1 m ² ). Then, the difference between the water absorption amounts in these experiments was evaluated as the moisture absorption amount and the moisture release amount, respectively.

The results are shown in Table 1 together with the humidity control effect of a vinyl chloride wallpaper (length 40 cm × width 25 cm) used as a comparative product.

[0067]

[Table 1]

The indications in the table mean the following. 20 ° C 65% weight (g / m ² ) ^{* 1} : 1m ² after standing at 20 ° C 65% RH for 48 hours
Weight per unit 20 ° C 65% weight (g / m ² ) ^{* 2} : 1m ² after standing at 20 ° C 65% RH for 24 hours
Weight 20 ° C. 98% by weight per ^{(g / m 2): 20} ℃ 98% RH 48 hours 1 m ² per weight hygroscopic after standing ^{(g / m 2): 20} ℃ 98% by weight - 20 ° C. 65% by weight ^{* 1} Moisture release (g / m ² ): 98% by weight at 20 ° C-65% by weight at 20 ° C ^{* 2} This indicates that the coating formed by applying the coating composition of the present invention has an excellent humidity control function. (Hygroscopicity and release) were confirmed.

Experimental Example 2 The coating compositions prepared in Examples 1 and 2 (Coatings 1 and 2)
Based on the method specified in Japanese Industrial Standards JIS K 5400, (1) state in the container (JIS K 5400 4.1
(2)), (2) Paint workability (6.1 of JIS K 5400), (3) Low temperature stability (5.1 of JIS K 5400), and check the formed coating film for (4) Drying time (JIS 6.5 of K5400),
(5) Appearance of coating film (JIS K 5400 7.1), (6) Hiding ratio (JIS K 5400
7.2 of 5400), (7) Alkali resistance (8.2 of JIS K 5400
1), (8) Washing resistance (8.11 of JIS K 5400), (9) Water resistance (J
8.19 of IS K 5400) and (10) Accelerated weather resistance (JIS K 5400
9.8.1). The test method and evaluation of each item were all based on the method specified in JIS K5663-1995.

(1) State in a container (JIS K5663-1995)
5.3) Fill the container (metal inner coated can) with paint,
After leaving still for 4 hours or more, the lid of the container was opened and the contents were stirred with a stick to check the state of the paint. When the mixture was stirred, there was no hard lump and the whole contents were uniform. "Good", when there was no lump but it was difficult to make it uniform, "normal", and when the lump was recognized was "poor".

(2) Coating workability (JIS K5663-1995, 5.4) Paint was uniformly applied to the smooth surface of a test plate (flexible plate, 500 × 200 × 3 mm) with a brush (first time, amount of application: 1
0 to 13 mml / sheet), and after 6 hours, a second brush coating (coating amount: 9 to 11 mml / sheet) is performed, and the coating workability is determined based on the difficulty of carrying the brush when applying the second time. evaluated. 2
When it is not difficult to carry the brush when applying the second time, the evaluation is "good" as "two coats do not hinder the painting work",
“Normal” and “Poor” were sequentially determined according to the difficulty of brush transfer.

(3) Low-temperature stability (5.5 of JIS K5663-1995) A container (metal inner coated can) is filled almost completely with paint and sealed, and kept in a low-temperature incubator at a temperature of -5 ± 2 ° C. for 18 hours. After storing, remove and leave at room temperature for 6 hours.
Repeated times. Next, the lid of the container was opened, and the paint in the container was stirred with a stick to check whether the paint became uniform. Further, the coating workability was examined according to the method (2) described above. Specifically, it was applied once with a paint before being put into a low-temperature constant temperature oven, applied twice using a treated paint whose low-temperature stability was checked, and evaluated for difficulty in carrying a second brush. Furthermore, the test plate after the above-mentioned coating workability test was dried for 24 hours, and the appearance of the formed coating film was evaluated. When the paint was easily uniform and there was no abnormality in the coating workability and appearance of the coating film, the evaluation was "good" as "no deterioration when cooled to -5 ° C". And "Poor".

(4) Drying time (5.6 of JIS K5663-1995) Paint was applied to one side of a glass plate (200 × 100 × 2 mm) with a clearance of 100 μm.
m using a B-type film applicator, put it in a thermo-hygrostat at 20 ± 1 ° C, 65 ± 5% humidity, and the coating film is in a semi-cured state. The drying time was measured until the coated surface was rubbed gently so as not to scratch the coated surface.

(5) Appearance of the coating film (5.7 of JIS K5663-1995)
After drying for an hour, the coated surface was visually observed under diffused daylight to evaluate the size of the brush, the presence or absence of holes and slackness, and the uniformity of the coating surface (unevenness). When the degree of brush eyes is not large, there are no holes or slacks, and the coating film surface is uniform (no unevenness), the evaluation is evaluated as "good" as "the appearance of the coating film is normal", and the degree of failure is sequentially "Normal" and "Poor" according to

(6) Hiding Ratio (5.8 of JIS K5663-1995) A hiding ratio test paper was fixed on a glass plate, and a paint was applied thereon using a B-type film applicator having a gap of 150 μm, and allowed to stand for 24 hours. And dried. The luminous reflectance of the coating film formed on the white background and the black background of the test paper was measured at three places of the test piece using a reflectance measuring device. From the obtained luminous reflectance, the hiding ratio was determined from the following equation.

[0076]

(Equation 1)

(7) Alkali resistance (5.1 of JIS K5663-1995)
0) Test piece: A paint was applied to the surface of a flexible plate (150 × 70 × 3 mm) whose peripheral and back surfaces were previously coated with the same type of paint two or three times with a brush at a rate of 1 ± 0.1 ml / 100 cm ^2. After 6 hours, apply once more in the same manner and dry for 5 days.
Next, the periphery and back surface of the test plate were covered with paraffin,
Test pieces were prepared (three pieces were prepared, one of which was an original test piece). The test piece was placed in a calcium hydroxide saturated solution (20 ± 1).
C.) for 18 to 48 hours, and the state of the coating film was evaluated by comparing it with the original test piece immediately after taking out the two test pieces from the solution and two hours later (swelling, cracking, and peeling). , Holes, softening, color, luster). Evaluation: Test piece 2 after immersion treatment for 48 hours or 18 hours
When no swelling, cracking, peeling, pitting, or softening was observed on the coating films, there was no coloring or turbidity of the immersion solution, and the degree of gloss change or discoloration was not greater than that of the original test specimen, `` 48 Evaluation is "good" as "No abnormality when soaked for 18 hours", or "Good" as "No abnormality when soaked for 18 hours"
And

(8) Washing resistance (5.11 of JIS K5663-1995) Specimen: Painted with a B-type film applicator with a gap of 150 μm on the long side of about 400 mm at the center of a flexible plate (430 × 170 × 5 mm) And dried for 7 days with the coated surface facing upward as test pieces (two pieces prepared). Using a washer machine, rub the coating surface of the test piece (2 pieces) wetted with 0.5% soap water by reciprocating (100 to 500 times) with a brush, and then remove the test piece from the testing machine. Wash with water and brush the length of the center of the mark
The coating film of the 100 mm portion was visually inspected under diffused daylight for the presence or absence of breakage or wear of the coating film. Evaluation: When 500 or more brush reciprocations, the coating film in the center part of both test pieces was not broken or worn and no exposure of the base material of the test piece was recognized, and the evaluation was "good" as "withstanding 500 washes". In addition, when no exposure of the substrate of the test specimen was observed after 100 or more reciprocations, the evaluation was "good" as "withstanding 100 washes".

(9) Water resistance (5.9 of JIS K5663-1995) Using the same test pieces (2 sheets) used in the above (7) Alkali resistance test, deionized water (20 ± 1 ° C.) ) For 96 hours, and the state of the coated surface was evaluated (wrinkles, blisters, cracks, peeling, color, gloss) immediately after the two test pieces were taken out of the solution and two hours later.

(10) Accelerated weathering resistance (JIS K5663-1995, 5.1
2) (Sunshine carbon arc lamp type: JIS K 5400 9.)
8.1) Specimen: A flexible plate (150 x 70 x 3 mm) previously treated with a synthetic resin emulsion sealer of JPIA-23 was evenly brushed twice with paint (amount applied per time: 1.0 ± 0.1).
ml / cm ² ) and dried for 5 days to obtain test pieces (two pieces, one of which was an original test piece). In addition, the interval between the first coating and the second coating is 6
Time. Irradiation was performed for 200 hours using a sunshine carbon arc lamp type light resistance tester (black panel temperature: 63 ° C, rain cycle: 120 minutes, 18 minutes), and the coating films of the original test piece and the weather resistance test piece were visually observed. Then, the degree of color unevenness and color gloss change, and the presence or absence of chalking, blistering, peeling, and cracking were examined. If the degree of chalk is 8 or more, no swelling, peeling or cracking, and the degree of color change is not greater than that of the original test specimen, the evaluation is evaluated as “good”, and the evaluation is evaluated as “normal” in accordance with the degree of failure. And "Poor".

Table 2 shows the results.

[0082]

[Table 2]

From these results, it was found that the coating composition of the present invention contains at least two kinds of synthetic resin emulsion paints,
In particular, it was confirmed that the paint satisfied one type of standard (JIS K5663-1995).

In Example 1, the ratio of the pigment (titanium oxide) to 100 parts by weight of slaked lime was 6 parts by weight,
8 parts by weight, 10 parts by weight and 14 parts by weight of each of the coating compositions were prepared, and the hiding ratio of such coating compositions was measured according to JIS K5.
In the same way, it was examined according to 7.2 of 400. As a result, all the coating compositions satisfied the hiding ratio of 0.93 or more.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a method for arranging a building material on a base material according to the present invention.

FIG. 2 is a cross-sectional view showing a continuous arrangement of panels according to the present invention. (A) shows an abutment, (b) shows an abutment V-shaped groove, and (c) shows an eye-opening by a phased joint.

FIG. 3 is a cross-sectional view showing a panel joint, which has been processed by a panel construction method (using a tape material such as cold gauze as a reinforcing member).

FIG. 4 is a cross-sectional view showing a panel joint processed by a panel construction method (using a substantially T-shaped joiner as a reinforcing member).

[Explanation of symbols]

 1. Panel substrate 2. Coating layer 3. Nail 4. 4. Paint composition (putty) filling section Wall base material 6. Joint 7. 7. Tape material (reinforcing member) Joiner (reinforcing member)

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 21, 2000 (200.4.2
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

That is, the present invention provides the following 1. ~8.Raised in
The coating composition is: Slaked lime, polymer component, Titanium oxideAnd water
Paint composition,(A) The proportion of slaked lime is 30
-80% by weight (solid basis), the polymer component (b)
Ryl-styrene copolymer, vinyl acetate polymer and styrene
At least one selected from the group consisting of ren / butadiene rubber
Both are one kind of synthetic polymer, 100 parts by weight of slaked lime
10 to 70 parts by weight (solid basis)
Bini (C) Distribution of titanium oxide to 100 parts by weight of slaked lime
The mixing ratio is 2 to 30 parts by weight (solid basis), and
(D) The state of the coating liquid or its dried coating in (1) container
Condition, (2) painting workability, (3) low temperature stability, (4) appearance of coating film,
(5) Alkali resistance, (6) Wash resistance, (7) Concealment ratio is JISK 56
At least two paints specified in 63-1995
To satisfy,The ceiling, inner wall, outer wall or building of the building
For timberPaint composition.2. The paint according to 1, wherein the paint does not contain a fiber material.
Composition. 3. 2 to 10% by weight of pigment per solid (solid weight conversion)
3. The coating composition according to 1 or 2, which is contained in the ratio of 4. Mixing ratio of titanium oxide to 100 parts by weight of slaked lime
Is 1 to 3 which is 8 to 15 parts by weight (solid basis)
A coating composition according to any one of the above. 5. Composition ratio of polymer component to 100 parts by weight of slaked lime
1 to 4 in which the combination is 25 to 35 parts by weight (solid basis).
The coating composition according to any one of the above. 6. 1 to 5 wherein the hiding power of the dried coating film is 500 μ or less.
The coating composition according to any one of the above. 7. Viscosity is 300-3000 centipoise at room temperature
7. The coating composition according to any one of 1 to 6. 8. 1 to 7 where the building material is cloth, board or panel
The coating composition according to any one of the above.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

The present invention also relates to a coated article having a coating film formed from the above-mentioned coating composition , specifically, for example, a wall.
Related to building materials such as materials and ceiling materials. Furthermore, the present invention
Method for applying the coating composition and inside a building using the above building material
The present invention relates to an exterior construction method. The present invention also relates to the above coating composition.
The present invention relates to a method for repairing a building interior / exterior wall surface using a method.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction contents]

[0056]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the following embodiments. However, these examples are only one embodiment of the present invention, and the present invention is not limited to these examples. Example 1 Slaked lime 40 (100%) Acrylic resin emulsion 32 (40%) (Polytron A-1450, Asahi Kasei) Titanium oxide (EP-498, Dainichi Seika) 5 (12.5%) Thickener (SP-600, Daicel) Chemical) 0.3 Defoamer (KM-70, Shin - Etsu Chemical) 0.3 Preservative (PL-600, Tokyo Fine Chemicals / Daiwa Chemical) 0.9 Water Residual amount 100.0 parts by weight Compounding the above components The solid content and the resin component are stably dispersed in water by stirring in a mixer for water, and the one-component aqueous coating composition of the present invention (viscosity 800 cps (25 ° C.) B-type viscometer; solid content 62.5 %) Was prepared. The acrylic resin emulsion (acrylic-styrene type) used had a solid content of 50% by weight. In the above formula, the values in parentheses indicate the mixing ratio of the acrylic resin emulsion (solid content) and titanium oxide when slaked lime is 100% by weight.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0057

[Correction method] Change

[Correction contents]

Example 2 Slaked lime 40 (100%) Acrylic resin emulsion 16 (20%) (Polytron A-1450, Asahi Kasei) Titanium oxide (EP-498, Dainichi Seika) 5 (12.5%) Thickener (SP- 600, Daicel Chemical) 0.3 Antifoaming agent (KM-70, Shin - Etsu Chemical) 0.3 Preservative (PL-600, Tokyo Fine Chemicals / Daiwa Chemical) 0.9 Total water 100.0 parts by weight The solid component and the resin component are stably dispersed in water by stirring the mixture in a paint mixer, and the one-component paint composition of the present invention (viscosity 800 cps (25 ° C.) B-type viscometer; solid content) 54.5%). The acrylic resin emulsion used contained a solid content of 50% by weight.

Claims (10)

[Claims] 1. A coating composition containing slaked lime, a polymer component and water, wherein a coating liquid or a dried coating film thereof is (1) in a container, (2) workability of coating, and (3) low temperature. Stability, (4) Appearance of coating film, (5) Alkali resistance, (6) Washing resistance, (7) Concealment ratio satisfies the properties of at least two types of paint specified in JIS K 5663-1995. Certain coating compositions. 2. The coating composition according to claim 1, wherein the hiding power of the dried coating film is 500 μm or less. 3. The coating composition according to claim 1, wherein the coating composition does not contain a fiber material. 4. The coating composition according to claim 1, wherein slaked lime is contained at a ratio of 30 to 80% by weight in terms of solids. 5. The coating composition according to claim 1, comprising a polymer component in an amount of 10 to 70 parts by weight (as solid) based on 100 parts by weight of slaked lime. 6. The coating composition according to claim 1, wherein the polymer component is an acrylic resin. 7. The coating composition according to claim 1, comprising 2 to 30 parts by weight (solid basis) of titanium oxide based on 100 parts by weight of slaked lime. 8. The coating composition according to claim 1, wherein the solid content is 50 to 70% by weight. 9. The coating composition according to claim 1, which has a viscosity of 300 to 3000 centipoise at room temperature. 10. A coated article having a coating film formed from the coating composition according to claim 1.