JP3400878B2 - Natural stone tone coating method and natural stone tone paint composition used therefor - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to a building, a civil engineering structure,
The present invention relates to a coating method or a coating composition for applying a natural stone tone pattern on the inside and outside wall surfaces, floors, ceiling surfaces and rooftops of play facilities, etc. The present invention provides a laminated coating film for forming a surface at low cost and a coating composition for the top coating thereof.

[0002]

2. Description of the Related Art Natural stone is often used as a surface decorative material for buildings, and a deep and calm color tone peculiar to natural products is widely preferred. However, natural stone has many drawbacks such as high price, difficulty in processing, and high weight. In particular, the high weight and difficulty in processing make it easy to use when used as a decorative material on the outer wall of a building.
There were many safety issues. Therefore, in recent years, there has been proposed a natural stone-like paint or a coating method that is inexpensive and can be easily applied, excluding such defects of natural stone. For example, Japanese Patent Laid-Open No. 57-27177 discloses, as a method of finishing a decorative wall surface expressing a natural stone pattern, a spraying material obtained by mixing an acrylic resin emulsion and aggregates of two or more colors such as marble powder and granite powder. After spraying to form an uneven pattern with a large step, after drying, the top surface of the convex part is cut flat, the cross section of the colored aggregate is exposed on the cut surface, and then the entire surface is transparent acrylic or acrylic-urethane A decorative wall surface finishing method of coating with a resin and finishing is described. Further, Japanese Patent Application Laid-Open No. 58-96664 discloses a coating composition for forming a natural stone pattern, which is composed of an aggregate having a specific light transmittance and a binder forming a nearly colorless and transparent film. ing. By combining the aggregates with a binder, a pattern and a volume feeling similar to natural stone can be obtained. In addition, in Japanese Patent Laid-Open No. 59-210150, as a building and a coating method, a plurality of types of mixed materials of different colors prepared by mixing ceramics, which are baked and pulverized with pigments, into a synthetic resin are prepared. , A method of simultaneously spraying the plural kinds of mixed materials from separate spraying ports of a multi-headed gun and applying them on the surface in a non-mixed multicolored state. Further, Japanese Patent Application Laid-Open No. 58-119376 discloses a method for forming a glaze-like and / or a shade-like coated surface, in which at least two kinds of paints having different color tones and / or transparency are applied to the surface to be coated. In order to mix the paint in a non-uniform manner in the spraying process or on the coated surface, the coating is carried out by a multi-head gun, a single-head gun, or a combination of both. In this case, a method is described in which a multi-head gun simultaneously paints materials having different color tones from separate spraying ports, and a single-head gun paints paints having different colors in two or more steps. In addition, in JP-A-64-11673, the undercoat paint is applied to the surface of the base material in advance and dried by touch or dried, or directly on the surface of the base material to obtain a color tone different from that of the undercoat paint or the base material. Different from each other and different in color tone from each other, several kinds of intermediate coating materials having a low solid content are respectively applied so as to form a granular discontinuous coating, and each discontinuous coating is a finger after forming each coating. It is dry by touch or dry, and the final coating completely drys the entire coating film.
In this case, a method is described in which the intermediate paints having different color tones are separately applied by a spray gun.

[0003]

However, when a specific aggregate or colored ceramic aggregate is used as a pattern forming material, it is difficult to form a large pattern such as natural stone, and in order to obtain a large pattern. If the particle size of the aggregate is forcibly increased, the aggregate will settle in the paint or it will be difficult to appropriately disperse the aggregates of several colors. Further, by using the paint containing aggregate, although the one closer to natural stone can be obtained, the weight of the paint used becomes large and the painting work is also a heavy labor. In the case of multicolor finishing, after spraying the first color, the coating material containing different color aggregates is overcoated, and then overcoating is performed. There was a problem in construction such as becoming. Further, when a special coating gun such as a multi-headed gun is used, it is necessary to simultaneously apply a paint containing different color aggregates, and there is a problem in that the skill of the coating technique and the poor handling due to the high weight are difficult. In addition, the unevenness that appears when painted is closer to that of natural stone.Therefore, when the surface is ground with a sander and smoothed, the number of steps increases and the efficiency of finishing work increases. Was much worse than the finish with ordinary paint. Therefore, construction costs such as personnel costs were also increasing. In addition to that, since the paint containing aggregate thickens itself, there is a problem that the material cost per unit area becomes very expensive as compared with general paint.
Then, at least two with different tones and / or transparency
In the method of painting so as to mix different kinds of paint in a non-uniform manner, there are problems when using a special coating gun called a multi-headed gun as described above, and at least when using a single-headed gun. Since the two kinds of paints are applied several times, uneven coating such as overlapping of the same color on a specific part occurs, and it depends largely on the skill of the painter to achieve a beautiful finish. In addition, the pattern of natural stone has the appearance that the parts to be patterned are scattered with respect to the hue of the whole base material, but to form this background color and pattern color by painting, the background paint and pattern It is necessary to set delicate conditions such as the ratio of the paint to be used and the size of the sprayed particles, and it is difficult to adjust this by using paints of different hues and using a multi-head or single-head gun. Next, apply the undercoat paint to the surface of the base material in advance, and the color tones of the undercoat paint and the base material will be different from each other, and the respective colors will also differ from each other. In the method of applying so as to form a discontinuous film, since the intermediate coating paints having different color tones are applied several times in the same manner as described above, there is a problem of uneven coating such as overlapping of the same color on a specific portion. In the method, it was difficult to set the conditions for forming the appearance such as the background color and the pattern color of natural stone. Therefore, one of the problems to be solved by the present invention is to provide a natural stone-like texture without using a conventional aggregate-containing paint, and to form a laminated coating film full of volume at a low cost. It is to provide a stone coating method. Also, as other issues,
A natural stone tone paint having specific physical properties is applied to a specific undercoat layer to provide a coating film having natural stone tone and flexibility. In addition, there is no problem when using a special coating gun, and the pattern color and background color can be added by one coating, and it is easy to adjust the size and hue of the pattern color and background color. A coating composition is provided. Further, it is an object of the present invention to provide a coating method and a coating composition capable of producing a granite-like texture among natural stones by setting a color difference between an undercoat layer, a pattern color, and a background color in a specific range. I am trying.

[0004]

In order to solve such a problem, the inventors of the present invention have conducted earnest research and found that natural stone materials have a pattern portion scattered with respect to the hue of the whole base material. Since it is an external appearance, the entire base material is positioned as the background color, the pattern part is positioned as the pattern color, and the multicolored paint in which the colored particles as the disperse phase are dispersed in the transparent dispersion medium Focusing on the point of forming a multicolored paint film that forms a pattern of the number of colors of colored particles, by combining it with an undercoat layer, it is not necessary to use an expensive natural stone-like special paint containing aggregate that complicates the work process. However, the present invention has been completed by finding that a natural stone tone finish is possible.

That is, the present invention is as follows. CIE 1976 L ^* a ^*
b ^* Color difference ΔE in color space (hereinafter referred to as “ΔE”)
And pattern color forming dispersed phase particles having a particle size distribution 1mm~15mm composed of a plurality of colors that the maximum value is 5-10, dispersible dispersion of transparent the pattern color forming <br/> dispersed phase particles in a particle state A natural stone-like coating composition containing a medium as a main constituent is formed into the pattern color.
Of ΔE with each dispersed phase particle, the minimum value is 0.1
A natural stone tone coating method, which comprises coating on an undercoat layer having a hue of 1 . 2. The minimum value of the color difference ΔE between the pattern-forming dispersed phase particles having a particle diameter distribution of 1 mm to 15 mm and consisting of a plurality of colors having the maximum color difference ΔE of 5 to 10 and the color difference ΔE is 0.1. Particle size distribution of ~ 1 is 0.001mm ~ 1mm
The background color forming dispersed phase particles, and a natural stone coating composition containing a transparent dispersion medium capable of dispersing the dispersed phase particles in a particle state as a main constituent, a natural stone characterized by being coated on an undercoat layer. Toning method. Provided is a natural stone paint composition used, which has a specific composition. And the undercoat according to items 1 and 2
The layer is a specific one, and the natural stone paint composition is a specific composition. 3. A pattern color forming dispersed phase particle having a plurality of colors and having a glass transition temperature (hereinafter referred to as “Tg”) of its constituent resin of 10 ° C. to 60 ° C. and a particle size distribution of 1 mm to 15 mm, and the dispersed phase particle. A natural stone-like coating composition containing a transparent dispersion medium that can be dispersed in a particle state as a main component has a tensile strength of 3
A natural stone-like coating method characterized by coating an elastic coating film surface having an elongation of 0 N / cm ² or more, an elongation rate of 100% or more, and a water permeability of 0.5 ml / 24 h or less. And a color difference ΔE pattern color forming dispersed phase particles in claim 3, and which was adjusted to a specific value of the color difference ΔE between該模like color forming dispersed phase particles respectively undercoat layer, 4. The pattern color forming dispersed phase particles having a plurality of colors and having a glass transition temperature (hereinafter referred to as “Tg”) of the constituent resin of 10 ° C. to 60 ° C. and a particle size distribution of 1 mm to 15 mm, and the constituent resin Tg. Natural stone mainly composed of background color forming disperse phase particles having a particle size distribution of 0.001 mm to 1 mm and a transparent dispersion medium capable of dispersing the disperse phase particles in a particle state at 10 ° C to 60 ° C. Tensile strength of the coating composition is 30N
/ Cm ² or more, the elongation of the coating film is 100% or more, and the water permeation rate is 0.5 ml / 24 hours or less. And color difference ΔE between the color difference ΔE pattern color forming dispersed phase particles in claim 4, respectively該模like color forming dispersed phase particles, the background color formed dispersed phase particles
To be adjusted to a specific value. 5. CIE 1976 L ^* a ^* b ^* Maximum color difference ΔE in the color space
Particle size distribution consisting of multiple colors with a large value of 5-10 is 1 mm
~ 15 mm pattern color forming dispersed particles and the pattern color forming dispersion
Of ΔE with each phase particle, the minimum value is 0.1 to 1
And particle size distribution of 0.001mm~1mm background color formation dispersed phase particles comprising, natural stone tone coating composition to disperse major components of the dispersion medium of the transparent particle state the background color formed dispersed phase particles. And it is intended to provide what has been the natural stone tone paint composition with the following specific composition. Dispersed phase and dispersion medium, (a) polyvinyl alcohol aqueous solution, (b) an organic solvent-based composition containing a vinyl synthetic resin having an acid value and a coloring material as essential components, (c) an organic titanate compound dispersed A natural stone tone paint composition, characterized in that a plurality of different colors of the oil-in-water type suspension composition are mixed.

First, there is a natural stone tone coating method which is one form of the present invention. The maximum value of ΔE used here is
Particle size distribution consisting of multiple colors of 5 to 10 is 1 mm to 15
A natural stone tone paint composition having a pattern color forming dispersed phase particle of mm and a transparent dispersion medium capable of dispersing the dispersed phase particle in a particle state as a main constituent is generally used as a multicolored paint for interior and exterior. There is no particular limitation as long as it is selected from the above and is a multicolor paint composition having such a constitution. Here, the background color-forming dispersed phase particles having a particle size distribution of 0.001 mm to 1 mm need not be blended when the undercoat layer for coating the natural stone tone paint composition is colored. When the undercoat layer is not colored, it is necessary to blend background color forming dispersed phase particles. This is because when the undercoat layer is colored, the undercoat layer can become the background color. The particle size distribution of the dispersed phase particles forming a pattern is 1 mm to 15 mm, but beyond this range, a mere multicolored pattern feeling, which is not a natural stone tone, can be expressed. In particular, it is preferable that the pattern color forming dispersed phase particles have a particle size distribution of 2 mm to 8 mm. Further, the particle size distribution of the dispersed phase particles forming the background color to be blended if necessary is 0.001 mm to 1 mm, but if the particle size distribution of the pattern forming particles and the background color forming particles exceeds the specified range, the pattern color It becomes impossible to distinguish the background colors, and similarly, only a mere multicolored pattern feeling is displayed. In particular, the particle size distribution of the background color forming dispersed phase particles is preferably 0.05 mm to 0.5 mm.
When blending pattern forming particles and background color forming particles at the same time,
The volume of each particle in the entire paint is preferably 10: 1 to 10: 5 in terms of the ratio of the pattern forming portion and the background color forming portion. In addition, the volume ratio of each color of the pattern forming portion to be mixed is preferably 1: 1 to 1:50. When there are two or more colors, it is desirable that any two colors have this relationship. Furthermore, the transparent dispersion medium capable of dispersing the dispersed phase particles, which is one of the main constituent components, in a particle state, when the dispersion medium lacks transparency, overlaps with the surface of the pattern forming portion or the background color forming portion, Therefore, it is necessary to be transparent when it becomes a substantially dry coating film. However, it is possible to appropriately color the dispersion medium within the range in which the transparent feeling is maintained and the multicolored pattern feeling is not impaired. Such a natural stone tone paint composition, due to the pressure when applied,
The pattern-forming particles and the background-color-forming particles that are blended as necessary are crushed to form a natural stone pattern. Therefore, it is necessary to coat with a coater that exerts a pressure such that the particles are crushed during painting, and a spray-type coater is desirable as such a coater. Especially commonly used H
An S spray gun and a universal gun (for example, "SGS-2" manufactured by Meiji Machine Co., Ltd.) are more desirable.

The natural stone paint composition is not particularly limited as long as it has the above-mentioned constitution.
For example, in JP-A-54-87738, "A water-dispersible vinyl-based product obtained by emulsion-polymerizing a polymerizable vinyl monomer using a neutralized product of an acrylic resin or a neutralized product of a maleated polybutadiene-based polymer as an emulsifier A dispersion medium obtained by mixing a polyaminocarboxylic acid derivative with a synthetic resin emulsion and / or a colored synthetic resin emulsion coating, a dispersed phase comprising a colored water-based coating containing a mixture of a polymer and a neutralized product of the acrylic resin as a main component. A multicolored paint described as "Aqueous multicolored paint by stirring and dispersing in water to gel the surface of dispersed particles to form an aqueous dispersion", which corresponds to the above-mentioned provisions, JP-A-1-289877. (1) A multicolored paint in which a colorant particle which is incompatible with a dispersion medium of the paint and hollow particles which are not liquid impregnating properties are dispersedly contained in an aqueous paint. The multicolored paint according to claim 1, wherein the colorant particles are particles obtained by suspending and dispersing in water a colored paint that is incompatible with water. Examples of pattern paints include those that meet the above regulations. In particular, (a) an aqueous polyvinyl alcohol solution, (b) an organic solvent-based composition containing a vinyl-based synthetic resin having an acid value and a coloring material as essential components,
(c) A multicolored coating composition in which a plurality of different colors of an oil-in-water type suspension composition in which an organic titanate compound is dispersed is mixed is more desirable. By using the multicolor pattern coating composition, it is possible to form a coating film having weather resistance.

In particular, the maximum value of the color difference ΔE (hereinafter referred to as “ΔE”) in the CIE 1976 L ^* a ^* b ^* color space is 5.
The pattern color forming dispersed phase particles having a plurality of colors of 10 to 10 were used, and the ΔE with each of the pattern color forming dispersed phase particles was applied to an undercoat layer of a hue having a minimum value of 0.1 to 1. In this case, it is possible to create a granite-like texture among natural stones. In addition, the maximum value of color difference ΔE is 5
The pattern color forming dispersed phase particles having a plurality of colors of 10 and the background color forming dispersed phase particles having a hue of which the minimum value is 0.1 to 1 in ΔE of each of the pattern color forming dispersed phase particles are blended. The natural stone tone paint composition can also be applied to give a granite tone texture.
The color difference Δ in the CIE 1976 L ^* a ^* b ^* color space here
E means CIE (International Commission on Illumination) 1931 and 1
The color display method based on the CIE-XYZ color system established in 964 is converted so that a certain distance (color difference) in the color system has a perceptual difference in equivalence in any color area. CIE 19
76 L ^* a ^* b ^* Color difference in the color space. More specifically, it is a color difference represented by ΔEab ^* in a color space having a quantity L ^* a ^* b ^* defined by the following equation in an orthogonal coordinate system.
(See chapter p190 ~ 211 issued colorant Engineering Handbook November 25, 1989 2.8 ^{"color") L * = 116 (Y /} Y 0) 1/3 -16 a * = 500 [(X / X ₀₎ ^{1 _{/ 3 - (Y / Y 0}} ) 1/3 ] b ^* = 200 ^{_{[(Y / Y 0) 1/3 -}} (Z / Z 0) 1/3 ] _{(wherein, X / X 0, Y /} Y 0 , Z / Z ₀ > 0.008
856, X, Y, Z are tristimulus values of the object color, X ₀ , Y ₀ ,
Z ₀ is the tristimulus value of the light source that illuminates the object color Y ₀ = 100
Is standardized in. ) The color difference between two object colors placed under a certain illumination is the tristimulus values X ₁ , Y ₁ , Z ₁ , respectively.
From X ₂ , Y ₂ and Z _{2 according} to the above equation, L ₁ ^* , a ₁ ^* , b ₁ ^* and
Obtain L ₂ ^* , a ₂ ^* , and b ₂ ^* and use them to calculate the color difference by the following formula. ΔE _ab ^* = [(L ₁ ^* -L ₂ ^* ) ² + (a ₁ ^* -a ₂ ^* ) ² + (b ₁ ^* -b ₂ ^* ) ² ] ^1/2 Actually, using a color difference meter, Measure the color difference between two object colors. As such a measuring device, for example, a color analyzer C-2000 (color analyzer) manufactured by Yamato Scientific Co., Ltd. can be used. The dispersed phase particles of a plurality of colors having a maximum ΔE value of 5 to 10 can be used. When a coating film is formed, a natural stone tone pattern portion is formed, and the smallest ΔE among the dispersed phase particles of a plurality of colors is 0.1 to 0.1.
A background color is formed when an undercoat layer of a hue having a value of 1 or dispersed phase particles becomes a coating film. Here, the undercoat layer can be used as it is if the hue of the base material itself satisfies the above-mentioned regulation, and if it does not correspond, the hue can be adjusted by an arbitrary method such as painting or kneading. In this way, by setting the color difference ΔE between the pattern colors and between the pattern color and the background color to be within the range, it becomes possible to bring out a texture of particularly granite stone among natural stone tones. At this time, if the respective color difference ΔE exceeds the specified range, the general natural stone tone is obtained, which is far from the deep granite tone appearance.

Next, the undercoat layer for coating the natural stone tone paint composition is intended to have a volume feeling of about 1 mm to 30 mm on the substrate, more preferably 2 mm to 20 mm in consideration of economy. It is not particularly limited as long as it is formed by coating various materials with a trowel, roller, spraying, etc., for example, it is formed by the material specified in JIS A 6910 multi-layer finish coating material. Coatings, coatings made of materials specified in JIS A 6915 Thick finish coating materials and JIS A 6916 cement-based undercoating coating materials, layers made of urethane foam that foams on site , A layer formed of lightweight mortar and the like. The materials specified in JIS A 6910 multi-layer finish coating materials listed here are mainly composed of cement, a binder such as synthetic resin, and an aggregate, and have three layers and a thickness of about 1 to 5 mm. It is not particularly limited as long as it is a coating material that finishes in an uneven pattern, and specific examples include cement-based multi-layer coating material (multi-layer coating material C) and polymer cement-based multi-layer coating material (multi-layer coating material CE). ,
Silica-based multi-layer coating material (multi-layer coating material Si), synthetic resin emulsion-based multi-layer coating material (multi-layer coating material E), reaction-curable synthetic resin emulsion-based multi-layer coating material (multi-layer coating material RE) , All of which are classified as the synthetic resin solution-based multi-layer coating material (multi-layer coating material RS). Here, the JIS A 6910 multi-layer finish coating material is composed of three layers of a base coating material, a main material and a top coating material. The natural stone tone coating composition used in the coating method of the present invention is the third layer. That is, it can also be used as a top coat material. Therefore, a natural stone-like paint finish in which the natural stone-like paint composition is applied on the undercoat material, the main material, and the top coat material, and the natural stone-like paint composition is applied on the undercoat material and the main material. Both natural stone-like paint finish applied as top coat material is possible. Also, JI
S A6915 As materials specified for thick finish coating material,
If it is a thick finish coating material (hereinafter referred to as a thick coating material) which is a single layer and has a concavo-convex pattern with a thickness of about 4 to 10 mm, mainly composed of a binder such as cement and a synthetic resin emulsion and an aggregate. There is no particular limitation, and specific examples include all those classified into cement-based thick coating materials, siliceous thick coating materials, and synthetic resin emulsion-based thick coating materials. In addition, as materials specified in JIS A 6916 Cement-based undercoating coating materials, cement and inorganic-based fine aggregates are mainly used as the main raw materials, and cement-based undercoating coating materials mainly used for the interior and exterior finishing work of buildings are prepared. The material is not particularly limited as long as it is applied to a thickness of about 1 to 3 mm. Of course, there is no problem even if the coating material is applied before applying the natural stone tone paint composition onto the cement-based base conditioning coating material. Rather, it is preferable from the viewpoint of waterproofness.
Incidentally, in the present invention JIS A 6910 multi-layer finish coating material, JIS A
6915 Thick finish coating material, JIS A 6916 Cement-based primer coating material should satisfy all the quality of these applicable standards.
It is not necessary to satisfy all the S standards, and those having ordinary coating film performance required for each application can be used. The urethane foam that is foamed at the site is not particularly limited as long as it is formed by applying a foaming urethane resin, foaming at the site, and molded into an arbitrary shape. , A main component selected from polyether polyols, polyester polyols, sugar-based polyols, etc., and aromatic, aliphatic, and aliphatic organic isocyanates as curing agents, organotins as catalysts, amines, etc. A two-component reaction-curing type, which comprises a silicone-based surfactant as a foam stabilizer such as water as an agent and a low boiling point solvent, and forms a rigid urethane foam, may be mentioned. In particular, Japanese Patent Application No. 6-
No. 163278 "foam thickening makeup structure and foam thickening makeup method", the surface of building and civil engineering structures,
Or apply a primer to a base material layer such as a plate material used for construction civil engineering structures, when the primer is not dried or after drying, a perforated form is attached, followed by water against polyetherpolyol, A foaming urethane resin composition obtained by mixing a main agent (A) composed of a catalyst, a curing agent (B) composed of polyisocyanate, and a filler (C) is applied to the perforated part or the entire surface of the mold to foam. By the foam thickening makeup finishing method to cure, by forming the surface formed as an undercoat layer,
A three-dimensional rock-like finish is possible. Here, when the natural stone tone paint composition is applied onto such a foamed urethane foam, if there is a problem in adhesion, it is more preferable to apply the base paint and then finish. In addition, for lightweight mortar, 1 mm is applied once to the base material.
There is no particular limitation as long as it is a lightweight mortar composition that can be applied with a thickness of about 30 mm. Specifically, for example, in cement and aggregate, a powder component containing a filler, and the like, in a polymer cement composed of a synthetic resin emulsion,
For example, a lightweight aggregate having a specific gravity smaller than that of a general inorganic filler and having a hollow inside is used for weight reduction. Here, when applying the natural stone tone paint composition onto such a lightweight mortar, there is no problem even if finishing is performed after applying the coating material.
Rather, it is more desirable from the viewpoint of waterproofness. By coating the natural stone-tone coating composition on a thick undercoat layer as described above, a natural stone-tone coated surface full of a sense of volume is obtained without using a natural stone-tone paint containing aggregate. Can be formed at low cost. Further, as a method of further giving a sense of volume, a method of using a joint terrain molding frame and arbitrarily forming joints can be arbitrarily selected, and various finishing methods are possible. The formwork referred to here includes a punched formwork and joint bars.

In addition, it is also possible to apply the natural stone tone paint composition to the surface of the elastic coating film. The material for forming the elastic coating film at this time is not particularly limited as long as it is a paint capable of forming a general elastic coating film. By using the coating material that forms this elastic coating film, it is possible to follow the cracks to the body and also to impart waterproofness to the body, so that it can be widely applied. At this time, the tensile strength specified in JIS K 5400 8.8 “Tensile strength and elongation” is 30 N / cm ² or more, the elongation of the coating film is 100% or more, and the water permeability specified in JIS A 6910 5.1 “Water permeability test” is It is desirable to use a paint capable of forming an elastic coating film of 0.5 ml / 24 hours or less. Such elastic type coating materials include, for example, the waterproof type of JIS A 6910 multi-layer finish coating material and various coating materials specified in JIS A 6021 roof coating waterproof material, but these JIS are not always required. It is not necessary to satisfy all the standards, and one having the usual coating film performance required for each intended use can be used as long as it satisfies the numerical values specified in the present invention. When such an elastic coating film is used as the undercoat layer, the synthetic resin constituting the dispersed phase particles has a glass transition temperature (hereinafter referred to as “Tg”) of 10 ° C. to 60 ° C., preferably 30. ~ 4
By using the one at 0 ° C., it is possible to follow the underlying elastic coating film, and the contamination of the pattern color and the background color forming portion can be improved. At this time, when Tg is lower than 10 ° C, tackiness is generated on the surface, which leads to a decrease in stain resistance.
If the temperature is higher than ° C, the elastic coating film cannot be followed and cracks occur in the portion where the coating film is formed by the dispersed phase particles. Further, as described above, even when the elastic coating film is used as the undercoat layer, the color difference ΔE of the pattern-forming dispersed phase particles is adjusted to a specific value,
In addition, the undercoat layer of the elastic coating is colored so that the color difference ΔE between the base and the pattern forming dispersed phase particles has a specific value, or the color difference ΔE between the background color and the pattern color has a specific value. By incorporating the background color-forming dispersed phase particles into the natural stone tone paint composition, a completely new finish that is elastic and has a particularly fine-grained texture among natural stone tones is possible.

By the way, the coating method of the present invention is characterized by coating the natural stone tone paint composition on the undercoat layer, but in order to further improve weather resistance and stain resistance, a top coat material is further added. There is no problem with painting. The top coat is not particularly limited as long as it has a transparency that does not impair the natural stone tone when it becomes a substantially dry coating film. Examples include urethane-based topcoat materials, acrylic-silicone-based topcoat materials, and fluorine-based topcoat materials that are particularly excellent in weather resistance and stain resistance. Further, there is no problem even with a top coat material which is generally used.

The substrate to be coated by this natural stone tone coating method is not particularly limited, but for example, concrete surfaces such as wall surfaces, floor surfaces, and ceiling surfaces of concrete structures, ALC plates, PC plates, The surface of dry molded boards for construction such as slate boards, extruded boards, GRC boards, calcium silicate boards, gypsum boards, and various siding boards, and sheet building materials, etc., which have recently attracted attention as a dry coating method, have a wide range of applications. It is possible. In addition, this coating method can also be applied to surfaces that have already been painted with paint, such as the surface of an old paint film when renovating a building. After the adjustment, a coating film similar to that described above may be appropriately formed.

Next, there is another form of the present invention, which is a natural stone tone paint composition, showing a particularly preferable form and composition among the paints capable of giving a natural stone tone finish. It is a thing. This is because the maximum value of ΔE is 5
Particle size distribution consisting of multiple colors from 1 to 10 is 1 mm to 15 mm
And the pattern color forming the dispersed phase particles, 該模like color forming the dispersed phase particles its
Of Rezoreto the Delta] E, the minimum value and background color formation dispersed phase particles having a particle size distribution of 0.001mm~1mm becomes 0.1 to 1, dispersible the pattern color forming dispersed phase particles in a particle state An organic solvent-based composition in which a transparent transparent dispersion medium is a main constituent component, and the dispersion phase and the dispersion medium include (a) an aqueous polyvinyl alcohol solution, (b) a vinyl-based synthetic resin having an acid value and a coloring material as essential components. And (c) an oil-in-water type suspension composition in which an organic titanate compound is dispersed. The particle size distribution of the dispersed phase particles forming the pattern is 1 mm to 15 mm, and the particle size distribution of the dispersed phase particles forming the background color is 0.001 mm to 1 mm.
However, when the particle diameters of the pattern-forming particles and the background-color-forming particles exceed the specified range, the pattern color and the background color cannot be distinguished, and only a mere multicolored pattern feeling appears, and the texture of natural stone disappears. Come on. In particular, it is preferable that the particle size distribution of the pattern color forming dispersed phase particles is 2 mm to 8 mm, and the background color forming dispersed phase particles is 0.05 mm to 0.5 mm. Further, the volume of each particle in the entire paint is 10: 1 to 10: 5 in terms of the ratio of the pattern forming portion and the background color forming portion.
Is desirable. Furthermore, the volume ratio of each color of the pattern forming portion to be mixed is preferably 1: 1 to 1:50, and in the case of a plurality of two or more colors, it is desirable that any two colors have this relationship. In addition, the transparent dispersion medium capable of dispersing the dispersed phase particles, which is one of the main components, in a particle state is overlapped on the surface of the pattern forming portion or the background color forming portion when transparency is lacking,
Since it will hinder the multicolored pattern of the corners, it must be transparent when it becomes a substantially dry coating film. However, it is possible to appropriately color the dispersion medium within the range in which the transparent feeling is maintained and the multicolored pattern feeling is not impaired. Further, the coating composition, (a) polyvinyl alcohol aqueous solution, (b) an organic solvent-based composition containing a vinyl-based synthetic resin having an acid value and a coloring material as essential components, (c) an organic titanate compound dispersed therein. By mixing a plurality of different colors of the oil-in-water type suspension composition, it is possible to form a coating film having excellent weather resistance with a coating material having excellent storage stability. In such a natural stone tone coating composition, the pattern forming particles and the background color forming particles are crushed by the pressure applied to form a smooth natural stone tone pattern. Therefore, it is necessary to coat with a coater that exerts pressure to crush particles during painting.
A spray-type coating machine is desirable as such a coating machine.
Particularly, commonly used HS spray guns and universal guns (for example, "SGS-2" manufactured by Meiji Kikai Seisakusho Co., Ltd.)
Is more desirable.

In addition, in the natural stone tone paint composition, in particular, the minimum of ΔE of the pattern color forming dispersed phase particles consisting of a plurality of colors having the maximum value of color difference ΔE of 5 to 10 and ΔE of each of the pattern forming dispersed phase particles. By making the background color-forming dispersed phase particles having a value of 0.1 to 1 essential, it is possible to form a granite-like painted surface among natural stones. The reason for this is as described above.

[0015]

Example (Reference Example 1) Using the raw materials of Table 1, based on the formulation example of Table 2, an organic solvent system which forms a dispersion phase while stirring the dispersion medium at an impeller peripheral speed of 1.0 m / SEC. The composition was formulated. As a result, the particle size distribution of the dispersed phase was 2 to 6.0 mm, and the average particle size was 3.5.
A suspension type coating composition of mm was prepared. This suspension type coating composition has L ^* = 7 in the CIE 1976 L ^* a ^* b ^* color space.
It was 7.6, a ^* =-0.1, b ^* = 4.0. (Reference Example 2) Based on the formulation example of Table 2 using the raw materials of Table 1, reference example 1
An organic solvent composition to be a dispersed phase was obtained in the same manner as in. This organic solvent composition has L ^* = 69.6, a ^* = − 0.2, b
^* Was 4.9. (Reference example 3) Based on the formulation example of Table 2 using the raw materials of Table 1, reference example 1
An organic solvent composition to be a dispersed phase was obtained in the same manner as in. This organic solvent composition has L ^* = 63.7, a ^* =-0.3, b
^* = 5.5. (Reference Example 4) Using the raw materials of Table 1, based on the formulation example of Table 2, the organic solvent composition serving as the dispersed phase was blended while stirring at a peripheral speed of the impeller in the dispersion medium of 2.5 m / SEC. did. as a result,
A suspension type coating composition having a particle size distribution of the dispersed phase of 0.03 to 0.5 mm and an average particle size of 0.1 mm was obtained. This suspension type coating composition had L ^* = 77.8, a ^* =-0.1, b ^* = 4.
It was 1. (Reference Example 5) Based on the formulation example of Table 2 using the raw materials of Table 1, the organic solvent composition to be the dispersed phase was blended while stirring at a peripheral speed of the impeller in the dispersion medium of 3.5 m / SEC. did. as a result,
A suspension type coating composition having a dispersed phase particle size distribution of 0.001 to 0.1 mm and an average particle size of 0.05 mm was obtained. This suspension type coating composition has L ^* = 77.6, a * =-0.1, b ^* =
It was 4.0.

(Compounding Example 1) A multi-colored paint was produced with the composition as shown in Table 3. At this time, the volume ratio of each color of the pattern color forming portion was 1: 1. (Formulation Example 2) A multi-color paint was produced with the formulation shown in Table 3. At this time, the volume ratio of the pattern color forming portion and the background color forming portion is 1
0: 4.3 Pattern color forming portion The volume ratio of each color was 1: 1. (Compounding Example 3) A multicolored paint was manufactured with the composition as shown in Table 3. At this time, the volume ratio of each color of the pattern color forming portion was 1: 1.3. (Compounding example 4) A multicolored paint was manufactured with the composition as shown in Table 3. At this time, the volume ratio of the pattern color forming portion and the background color forming portion is 1
The volume ratio of each color was 0: 1. (Compounding example 5) A multicolored paint was manufactured with the composition as shown in Table 3. At this time, the volume ratio of the pattern color forming portion and the background color forming portion is 1
0: 4.3, volume ratio of each pattern color forming part is 1.5:
It was 1: 1. (Compounding example 6) A multicolored paint was manufactured with the composition as shown in Table 3.

(Example 1) A required amount of 0.20 kg / g of "colored binder" manufactured by SK Kaken Co., Ltd. was applied to two slate plates of 900 × 900 × 3 mm.
It was applied at m ² . Temperature 20 ± 1 ℃, relative humidity 65 ± 5
% Drying room (hereinafter referred to as "standard condition") for 3 hours, then paste the eye topography molding frame, and SK Kaken Co., Ltd. "Sipolok" (JIS A 6915 exterior thick coating material E display permission product) Was applied to a thickness of 5 mm. After drying for 24 hours under standard conditions, to a multicolor paint composition of Formulation Example 1 using the HS cancer, requirements 0.40 kg / m ^2, the chip diameter 5 mm,
It was applied under the condition of air pressure of 200 to 300 kPa. After drying for 16 hours in the standard state, the eye topography molding frame was removed, and SK Kaken Co., Ltd. "Urethane Top" (acrylic urethane top coat material) was applied at the required amount of 0.20 kg / m ² and tested. The body was made. The following test was performed on this test body. <Uneven coating test> With respect to the finished test body, uneven coating was visually confirmed. The results are shown in Table 5 as ◯: No coating unevenness Δ: Some coating unevenness X: Many coating unevenness. <Designability test> The finished test body was compared with natural stone to visually determine whether or not it had a similar design feeling. The results are shown in Table 5 by ◯: very close to natural stone, Δ: similar to natural stone, but somewhat artificial. <Volume Sensitivity Test> Regarding the finished test body, 15 parts by weight of an acrylic styrene copolymer emulsion and 50 parts by weight of a different colored silica sand mixture having a particle size of 0.1 to 5.0 mm are mounted on a slate plate of 900 × 900 × 3 mm. , Cold water stone with a particle size of 0.5-1.0 mm 15
Parts by weight, 10 parts by weight of silica sand having a particle size of 0.1 to 0.5 mm, 3 parts by weight of various additives, and 10 parts by weight of water are mixed to produce a natural stone coating material applied by a one-step joint finishing method. It was visually judged whether the feeling of volume was close to that of the sample. The results are as follows: ⊚: Very excellent volume feeling ○: There is a volume feeling Δ: Slightly volume feeling ×: No volume feeling is seen, and the results are shown in Table 5. <Staining resistance test> One of the finished test pieces was subjected to an outdoor exposure test, and the level of contamination was compared with the other one that was not exposed after 6 months. The results are shown in Table 5 as follows: ⊚: Very good ◯: Good Δ: Stain is noticeable ×: Stain is noticeable (Example 2) As shown in Table 4, "SK clear sealer" manufactured by SK Kaken Co., Ltd. was applied to two 900 × 900 × 3 mm slate plates at a required amount of 0.10 Kg / m ² . After being dried for 2 hours in a standard state, "RENALAC" (JISA6910 multi-layer coating material E display permission product) manufactured by SK Kaken Co., Ltd. was applied in a yuzu skin condition to a thickness of about 2 mm. After drying for 24 hours in the standard state, HS the multicolored paint of formulation example 2
Application was carried out in the same manner as in Example 1 using a gun. After drying in a standard state for 16 hours, "Urethane Top" (acrylic urethane type top coat material) manufactured by SK Kaken Co., Ltd. was applied in the same manner as in Example 1 to prepare a test body. The completed test piece was tested in the same manner as in Example 1, and the results are shown in Table 5. (Example 3) As shown in Table 4, "SK Clear Sealer" manufactured by SK Kaken Co., Ltd. was applied to ^two 900 × 900 × 3 mm slate plates at a required amount of 0.10 Kg / m ² . After drying for 2 hours in the standard state, SK Kaken Co., Ltd. "ceramitite tile" (JIS A 6910 multi-layer coating material Si display permission product) is applied to the yuzu skin to a thickness of 1.5 mm. did. After drying for 16 hours in a standard state, "Please Coat" (acrylic resin emulsion paint) manufactured by SK Kaken Co., Ltd. was applied at a required amount of 0.30 Kg / m ² . After drying for 24 hours in the standard state, the multicolored paint of formulation example 3 was applied using an HS gun in the same manner as in example 1,
A test body was prepared. The finished test body was tested in the same manner as in Example 1, and the results are shown in Table 5.

(Comparative Example 1) Two slate plates having a size of 900 × 900 × 3 mm were subjected to "Lena Coat" manufactured by SK Kaken Co., Ltd., respectively, in A color, B color and C color. C color was diluted by 20%, and the entire surface was applied with an HS gun under the conditions of a required amount of 0.25 kg / m ² , an air pressure of 500 kPa, and a tip diameter of 3 mm. After being dried for 3 hours in the standard state, the A-color paint diluted with 8% of the A-color was applied with an HS gun under the conditions of an air pressure of 300 kPa and a tip diameter of 4 mm so that the A-color became a discontinuous bead pattern. After drying for 3 hours in the standard state, the B color paint diluted by the same operation as the A color was applied under the same conditions. The formed coating film has a portion in which the discontinuous beaded pattern of A color is hidden by the discontinuous beaded pattern of B color, and the discontinuous beaded pattern itself is overlapped with each of A color and B color, There was a part that was continuous. This test body was tested in the same manner as in Example 1, and the results are shown in Table 5. (Comparative Example 2) The C-color paint used in Comparative Example 1 was similarly applied to two 900 x 900 x 3 mm slate plates. After drying for 3 hours in a standard state, the A-color paint and the B-color paint used in Comparative Example 1 were put in separate HS guns, and the HS guns were simultaneously moved in the same direction under the same conditions as in Comparative Example 1, respectively. It was applied so that a discontinuous bead pattern could be formed. The formed coating film is the same as in Comparative Example 1 in that the color on the side following after the coating direction overlaps the color on the front side and the discontinuous bead pattern is hidden. was there. This test body was tested in the same manner as in Example 1, and the results are shown in Table 5. (Comparative Example 3) A test body was prepared in the same manner as in Example 2 except that Formulation Example 6 was used for the multicolored paint. The completed test body is
I could feel a sense of volume, but I could only feel a fine and colorful pattern. This test body was tested in the same manner as in Example 1, and the results are shown in Table 5. (Comparative Example 4) 15 parts by weight of an acrylic styrene copolymer emulsion and a particle size of 0.1 were applied to two 900 x 900 x 3 mm slate plates.
50 parts by weight of different colored silica sand mixture of ~ 5.0 mm, 15 parts by weight of cold water stone with a particle size of 0.5 ~ 1.0 mm, particle size of 0.1
10 parts by weight of 0.5 mm silica sand, 3 parts by weight of various additives,
3mm of natural stone-like coating material manufactured by mixing 10 parts by weight of water
To a thickness of 1 to prepare a test body. The completed test body is tested in the same manner as in Example 1. The results are shown in Table 5.

[Table 1]

[Table 2]

[Table 3]

[Table 4]

[Table 5]

Example 4 An elastic flat paint (acrylic emulsion paint, pigment volume concentration: 1) was applied to a slate plate of 300 × 210 × 3 mm.
3.5, tensile strength: 35 N / cm ² , elongation rate: 150%,
Water permeability: 0.2 ml / 24 h) was applied over the entire surface with a spray gun at a required amount of 0.8 kg / m ² . 24 in standard condition
After drying for a period of time, the multicolored paint of Formulation Example 1 was applied in the same manner as in Example 1 using an HS gun to prepare a test body. The completed test body was subjected to a hot and cold repeated test by the method shown below. <Hot and cold repeated test> JIS A
6910 5.9 20 ±
Immediately after immersing in 2 ℃ water for 18 hours, -20 ± 3 ℃
3 hours in a constant temperature bath, and then heated in another constant temperature bath at 50 ± 3 ° C. for 3 hours. After repeating this cycle for 24 hours as one cycle for 10 cycles, it was allowed to stand for 2 hours in the standard state, and the state of the coating film surface was confirmed. As a result, not only the elastic flat paint as the undercoat but also the coating film of the multicolored paint forming the discontinuous bead-like pattern was not cracked.

EXAMPLE 5 L ^* = 77.4, a ^* =-0.7, b ^* = on a slate plate.
Ordinary acrylic flat paint toned to 3.6,
It was applied and dried by spraying at a rate of 0.3 Kg / m ^{2 to} obtain a base color 1. Next, when a multicolor paint of Formulation Example 1 was produced, the maximum value of ΔE between the pattern color forming dispersed phase particles was 8.1, and the minimum value of ΔE between the pattern color forming dispersed phase particles and the base color 1 was , 0.7. The following tests were conducted using this multicolored paint. The results are shown in Table 8. <Uneven coating test> This multi-colored paint was applied to the above-mentioned coated slate plate using an HS gun under the conditions of a tip diameter of 5 mm and an air pressure of 200 to 300 kPa, and the uneven coating was visually confirmed.
The results are shown by ◯: no coating unevenness, Δ: some coating unevenness, x: large coating unevenness. <Designability> The natural stone tone pattern coating film formed by the multicolor pattern paint applied to the slate plate was compared with natural granite to visually judge whether the design feeling was close to natural. The results are represented by ◯: very close Δ: similar ×: artificially viewed. <Staining resistance> The slate plate coated with the above-mentioned multicolored paint was subjected to an outdoor exposure test, and compared with one not exposed to the level of pollution after half a year. The results are indicated by ◯: good Δ: dirt is noticeable ×: dirt is noticeable. ( Example 6 ) When the multicolored paint of Formulation Example 2 was produced, the maximum value of ΔE between the pattern color forming dispersed phase particles was 8.1, and further, the pattern color forming dispersed phase particles and the background color forming dispersed phase particles were Δ
The minimum value of E was 0.2. This multicolored paint H
Using S gun, tip diameter 5mm, air pressure 200 ~ 3
When applied to a slate plate under the condition of 00 kPa, the dispersed phase particles of the suspension type coating composition of Reference Example 4 became a background color, and the dispersed phase particles of each suspension type coating composition of Reference Example 1 and Reference Example 2 Formed a coating film having a pattern color. The coating film thus formed was tested in the same manner as in Example 5 . The results are shown in Table 8. ( Comparative Example 5 ) When the multicolored paint of Formulation Example 4 was produced, the maximum value of ΔE between the pattern color forming dispersed phase particles was 14.0 , and that of the pattern color forming dispersed phase particles and the background color forming dispersed phase particles respectively. The minimum value of ΔE was 0.2. Using an HS gun, this multicolored paint is used with a tip diameter of 5 mm and an air pressure of 200-300.
When applied to a slate plate under the condition of kPa, the dispersed phase particles of the suspension type coating composition of Reference Example 4 have a background color, and the dispersed phase particles of each suspension type coating composition of Reference Example 1 and Reference Example 3 Formed a coating film having a pattern color. The coating film thus formed was tested in the same manner as in Example 5 . The results are shown in Table 8. ( Comparative Example 6 ) When the multicolored paint of Formulation Example 5 was produced, the maximum value of ΔE between the pattern color forming dispersed phase particles was 14.0 , and that of the pattern color forming dispersed phase particles and the background color forming dispersed phase particles respectively. The minimum value of ΔE was 0.2. Using an HS gun, this multicolored paint is used with a tip diameter of 5 mm and an air pressure of 200-300.
When it was applied to a slate plate under the condition of kPa, the dispersed phase particles of the suspension type coating composition of Reference Example 4 became the background color, and each suspension type coating composition of Reference Example 1, Reference Example 2 and Reference Example 3 The dispersed phase particles of (1) formed a coating film having a pattern color. The coating film thus formed was tested in the same manner as in Example 5 . The results are shown in Table 8.

( Comparative Example 7 ) "RENACOAT" manufactured by SK Kaken Co., Ltd. was colored in D color (L ^*
= 78.2, a ^* = 0.2, b ^* = 4.3), E color (L
^* = 70.1, a ^* = − 0.3, b ^* = 5.2), base color 3 (L ^* = 77.7, a ^* = − 0.7, b ^* = 4.
Each of them was toned in 1). At this time, ΔE of D color and E color
Was 8.2, the base color 3 and ΔE of D color or E color were the smallest values of 1.0. Then, the slate plate is diluted with 20% of the base color 3 paint, and the HS gun is used to apply the amount of 0.25 kg.
/ M ² , air pressure 500 kPa, tip diameter 3 mm. After the base coat is dried, D is diluted with 8% of D color.
The color paint was applied with an HS gun under the conditions of an air pressure of 300 kPa and a chip diameter of 4 mm so that the color D was a discontinuous bead pattern. After the D color was dried, the E color paint diluted by the same operation as the D color was applied under the same conditions and dried. The formed coating film has a portion in which the discontinuous beaded pattern of D color is hidden by the discontinuous beaded pattern of E color, and further, the discontinuous beaded pattern itself is overlapped with each of D color and E color and is continuous. There was a part that had turned. The coating film was tested in the same manner as in Example 5 and the results are shown in Table 8. ( Comparative Example 8 ) The base color 3 paint used in Comparative Example 7 was similarly applied to a slate plate and dried. After that, the A color paint and the B color paint were put in separate HS guns, and these HS guns were simultaneously applied in the same direction under the same conditions as in Comparative Example 7 so that discontinuous bead patterns could be formed. . The coating film formed after drying, in the same manner as in Comparative Example 7, with respect to the coating direction, the color on the side following afterwards overlaps the color on the front side,
There was a part where the discontinuous bead pattern was hidden. The coating film was tested in the same manner as in Example 5 and the results are shown in Table 8. ( Comparative Example 9 ) 15 parts by weight of an acrylic styrene copolymer emulsion,
50 parts by weight of a different colored silica sand mixture with a particle size of 0.1 to 5.0 mm, 15 parts by weight of cold water stone with a particle size of 0.5 to 1.0 mm, and 10 parts by weight of silica sand with a particle size of 0.1 to 0.5 mm. Parts, various additives 3
A natural stone tone coating material produced by mixing 10 parts by weight of water and 10 parts by weight of water is applied to a slate plate with a thickness of 3 mm, and after drying, it is actually applied.
The test was conducted in the same manner as in Example 5 . The results are shown in Table 8.

Example 7 Elastic Flat Coating Material (Acrylic Emulsion Coating, Pigment Volume Concentration: 13.5, Tensile Strength: 35 N / cm ² , Elongation: 150%, Water Permeability: 0.2 ml / 24 h) L * = 7
7.2, a ^* =-0.3, b ^* = 3.6, and the entire surface of the slate plate was sprayed with a spray gun at a coating amount of 0.8 kg / m ² and dried to give a base color 2. And Using the HS gun, the multi-color paint of Formulation Example 3 was applied under the conditions of a tip diameter of 5 mm and an air pressure of 200 to 300 kPa, and dried. <Hot and cold repeated test> According to JIS A 6910 5.9 Hot and cold repeated test, the test piece was immersed in water at 20 ± 2 ° C for 18 hours and immediately -20
Cool in a constant temperature bath of ± 3 ° C for 3 hours, and then heat in another constant temperature bath of 50 ± 3 ° C for 3 hours. After repeating this cycle for 24 hours as 10 cycles, 2
After standing for a while, the state of the coating film surface was confirmed. As a result, not only the elastic flat paint as the undercoat but also the coating film of the multicolored paint forming the discontinuous bead-like pattern was not cracked. Table 9 shows the color difference ΔE between each reference example and the base color.

[Table 6]

[Table 7]

[Table 8]

[Table 9]

[0023]

INDUSTRIAL APPLICABILITY According to the present invention, by coating the undercoat layer with a multicolored paint containing dispersed phase particles having a specific particle diameter as a main constituent, the conventional paint containing aggregates is not used. However, it is possible to create a natural stone tone texture, and by forming a specific undercoat layer and giving the base a certain thickness, a natural stone tone laminated coating film full of volume can be made inexpensive. There is an effect that can be formed. Furthermore, in the multicolored paint produced from the suspension type coating composition in which L ^* value, a ^* value and b ^* value are adjusted in advance,
By specifying the maximum value of the color difference ΔE between the pattern forming dispersed phases and the minimum value of the color difference ΔE of the background color forming dispersed phase or the background color for each of the pattern forming dispersed phases, a special coating machine or skilled It is possible to perform a stone material painting with a deep design feeling as if it were a granite stone, without requiring the skill of a painting expert. In addition, since the coating film formed from the coating composition of the present invention forms a relatively smooth surface, it is difficult for contaminants to adhere to it, and even if it becomes dirty, it can be wiped off.

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-57-127474 (JP, A) JP-A-6-329961 (JP, A) JP-A-62-149382 (JP, A) JP-A-57- 27177 (JP, A) JP-B-48-44172 (JP, B1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B05D 5 / 06,1 / 36 B05D 7 / 00,7 / 24 C09D 5/29 E04F 13/02

Claims (15)

(57) [Claims] 1. A color in the CIE 1976 L ^* a ^* b ^* color space.
And pattern color forming dispersed phase particles having a particle size distribution 1mm~15mm composed of a plurality of colors that the maximum value is 5 to 10 of the difference Delta] E, the pattern
The dispersion medium dispersible transparent color forming dispersed phase particles in a particle state, a natural stone tone paint composition whose main constituent, 該模like
Of ΔE with each color forming dispersed phase particle, the minimum value is
A natural stone tone coating method, which comprises coating on an undercoat layer having a hue of 0.1 to 1 . 2. A color in the CIE 1976 L ^* a ^* b ^* color space.
And pattern color forming dispersed phase particles having a particle size distribution 1mm~15mm composed of a plurality of colors that the maximum value is 5 to 10 of the difference Delta] E, 該模like
Of ΔE with each color forming dispersed phase particle, the minimum value is
And background color formation dispersed phase particles having a particle size distribution of 0.001mm~1mm comprising 0.1 to 1, a dispersion medium dispersible clear the pattern color forming dispersed phase particles in a particle state, as main components A natural stone tone painting method, which comprises applying a natural stone tone paint composition onto an undercoat layer. 3. The undercoat layer is a JIS A 6910 multi-layer finish coating material.
The natural stone-tone coating method according to claim 1 or 2, wherein the natural stone-tone coating method is formed of the material defined in (3). 4. The natural stone tone coating method according to claim 1, wherein the undercoat layer is formed of a material specified in JIS A 6915 Thickening finish coating material. 5. The natural stone tone painting method according to claim 1 or 2, wherein the undercoat layer is formed of a material specified in JIS A 6916 Cement-based ground control coating material. 6. The natural stone tone coating method according to claim 1, wherein the undercoat layer is formed of urethane foam. 7. The natural stone tone coating method according to claim 1, wherein the undercoat layer is formed of a lightweight mortar. 8. A natural stone tone paint composition comprising (a) an aqueous solution of polyvinyl alcohol, (b) an organic solvent-based composition containing, as essential components, a vinyl-based synthetic resin having an acid value and a coloring material, (c) an organic compound. The coating method according to any one of claims 1 to 7 , wherein a plurality of different colors of the oil-in-water type suspension composition in which the titanate compound is dispersed are mixed. 9. A glass transition temperature (hereinafter, referred to as "Tg") of a constituent resin having a plurality of colors is 10 ° C. to 60 ° C.
A natural stone tone paint composition having as main components the pattern color forming dispersed phase particles having a particle size distribution of 1 mm to 15 mm and a transparent dispersion medium capable of dispersing the pattern color forming dispersed phase particles in a particle state. Is applied to the surface of an elastic coating film having a tensile strength of 30 N / cm ² or more, an elongation of the coating film of 100% or more, and a water permeability of 0.5 ml / 24 h or less. 10. A pattern color forming dispersed phase particle comprising a plurality of colors having a maximum color difference ΔE in the CIE 1976 L ^* a ^* b ^* color space of 5 to 10, and further using the pattern color forming dispersed phase. Of ΔE with each of the particles, the minimum value is 0.1
The coating method according to claim 9 , wherein the surface of the elastic coating film having a hue of 1 is coated. 11. A glass transition temperature (hereinafter, referred to as “Tg”) of a constituent resin of a plurality of colors is 10 ° C. to 60 ° C.
And a pattern color forming dispersed phase particle having a particle size distribution of 1 mm to 15 mm, and a background color forming dispersed phase particle having a particle size distribution of 0.001 mm to 1 mm and a Tg of the constituent resin of 10 ° C. to 60 ° C.
A transparent dispersion medium capable of dispersing the dispersed phase particles in a particle state,
A natural stone-like paint composition as a main constituent is applied to the surface of an elastic paint film having a tensile strength of 30 N / cm ² or more, a film elongation of 100% or more, and a water permeability of 0.5 ml / 24 h or less. A natural stone tone painting method characterized by that. 12. A pattern color forming dispersed phase particle comprising a plurality of colors having a maximum color difference ΔE in the CIE 1976 L ^* a ^* b ^* color space of 5 to 10, and each of the pattern color forming dispersed phase particles. out of Delta] E, wherein the minimum value is characterized by the use of background color formation dispersed phase particles of the hue to be 0.1 to 1
Item 11. The coating method according to Item 11 . 13. A natural stone tone paint composition comprising (a) an aqueous polyvinyl alcohol solution, (b) an organic solvent-based composition containing as an essential component a vinyl-based synthetic resin having an acid value and a coloring material, (c) an organic composition. The coating method according to any one of claims 9 to 12 , wherein a plurality of different colors of the oil-in-water type suspension composition in which the titanate compound is dispersed are mixed. 14. CIE 1976 L ^* a ^* b ^* and the particle size distribution of 1mm~15mm pattern color forming dispersed phase particles composed of a plurality of colors maximum value of the color difference ΔE is 5-10 in the color space,該模like color of ΔE between each forming a dispersed phase particles, the particle size distribution minimum value is 0.1 and the background color formed dispersed phase particles 0.001Mm～1mm, the pattern color forming dispersed phase particles in a particle state A natural stone tone paint composition comprising a dispersible transparent dispersion medium as a main constituent. 15. A dispersion phase and a dispersion medium, (a) an aqueous solution of polyvinyl alcohol, (b) an organic solvent-based composition containing, as essential components, a vinyl synthetic resin having an acid value and a coloring material, (c) an organic titanate. 15. The natural stone tone paint composition according to claim 14 , wherein a plurality of different colors of the oil-in-water type suspension composition in which the compound is dispersed are mixed.