JP2002059075A - Retaining method of strength and hardness by preventing incomplete hydration reaction caused by atmospheric temperature and quality of base material with water base paint and covering material containing cement system inorganic sealant as indispensable component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To retain a hardness and a strength of a surface and to prevent a deterioration phenomenon at the time of applying a painting and covering to a base material having a high water-absorbing/hygroscopic ability. SOLUTION: A water base paint and a water base covering material containing a cement system inorganic sealant as an indispensable component and preventing a ductility and a crack of a coating film surface caused by an incomplete hydration reaction generated by a water-absorbing/hygroscopic performance of a base material are coated. Thereafter, the ductility and the crack on the coating film surface are prevented by adjusting a moisture content replenishment onto a surface of the coating film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[001]

[Industrial applications] For interior materials etc. indoors,
Since the sick house syndrome occurs frequently, many human-friendly building materials mainly composed of inorganic agents have been developed. Among them, a non-flammable, humidity-adjusting base material having a high moisture absorption / release effect has attracted attention, including an effect of preventing dew condensation. The invention of the present application can be expected to spread the interior materials suitable for the climate of Japan by solving the problems of these humidity-adjusting building materials. A wide range of demand can be expected.

[002]

2. Description of the Related Art A water-based paint and a water-based coating agent containing a cement-based inorganic binder as a component are used to spray water on the base material to lower the temperature of the base material when the temperature of the base material becomes high when the temperature is high. Although the hydration reaction was stabilized by suppressing evaporation, a stable hydration reaction could not be expected depending on the working area. In addition, recently, with the spread of humidity adjustment interior materials, water absorption,
Highly hygroscopic materials are used. When finishing the surface of such a substrate, the moisture of the coating material is rapidly taken away,
The surface of the coating film is fragile, and the powder is in a state of being sprayed and often stains clothes when touched.

[003]

The incomplete hydration reaction which occurs when the temperature is high or when the temperature of the substrate to be applied is high is a water-based paint and water-based coating material containing a cement-based inorganic binder as an essential component. Degrades strength and hardness.

In the case of a humidity-adjusting building material, it is often formed from a base material, and there remains a problem in designability. In the case of coloring, patterning, and patterning, it is necessary to maintain the moisture absorption and moisture release performance, so that moisture absorption equal to or more than the humidity adjustment building material,
It is necessary to add coloring, design, and design to the material that has a moisture releasing effect to ensure the design.

[005] A cloth or paper with high moisture permeability can also be applied, but pasting will necessitate a certain type of gluing action, lowering the function of the building material itself, and making it difficult to ensure nonflammability. Some of them expand and contract by absorbing water.

In addition, aqueous inorganic paints and coating materials having a moisture absorbing and releasing performance have been used in the past, but most of them have dust left on the surface, and when touched, the dust adheres and may stain clothes. Depending on the particle size of the dust, it floats in the air and is not preferable for sanitation. It can even fall on the floor and soil the floor.

[007]

Means for Solving the Problems The invention described in claim 1 of the present application relates to a water-based paint and a water-based paint containing a cement-based inorganic binder generated as an essential component when the temperature is high or when the temperature of the substrate to be applied is high. It is characterized in that the brittleness is prevented by the incomplete hydration reaction due to the early evaporation of the moisture of the coating material and the crack is prevented by adjusting the water supply on the surface of the coated material after coating. In addition, the hydration reaction referred to in the present invention means that the cement-based inorganic bonding agent is mixed with water to form a hydrate and hardens.

The invention described in claim 2 of the present application is based on the fact that the water-based paint and the water-based coating material containing the cement-based inorganic bonding agent as an essential component are based on the incomplete hydration reaction generated by the water absorption and moisture absorption properties of the base material. After coating, the prevention of brittleness and cracks on the coating film surface is prevented by adjusting the water supply on the surface of the coating material.

[009] In the invention described in claim 3 of the present application, the water-based paint and the water-based coating material having cement-based inorganic bonding as an essential component have water absorption, moisture absorption ability, or the purpose thereof, and have the same kind of ability and purpose. Prevention of brittleness and cracks on the surface of the coating film due to incomplete hydration reaction that occurs when the composition is applied to a substrate is prevented by adjusting the water supply on the surface of the coating material after coating.

[0102] The invention described in claim 4 of the present application is characterized in that the water-based paint and the coating material containing the cement-based inorganic binder as an essential component have water absorption and moisture absorption performance or the purpose thereof, and Is unspecified, cracks are prevented and brittleness deterioration of the coated surface is prevented by adjusting the water supply on the coated surface after coating.

[0111] When the temperature is high, the temperature of the base material often rises. By applying the water-based paint and the coating material referred to in the present application to such a base material, evaporation of moisture rapidly occurs, and The hydration reaction is incomplete and a brittle coating is formed. In this case, water is supplied to the surface coating according to the degree of evaporation of the water. This replenishment method is preferably a method in which pressure is not applied to the surface coating film, for example, by using a sprayer, a sprayer or the like.

Further, even in the case of a substrate having high water absorption and moisture absorption performance irrespective of the temperature, cracks occur due to incomplete hydration reaction because the coating material according to the present invention rapidly absorbs water. Alternatively, a powdery substance floats on the surface, and the powdery composition adheres when touched. In order to prevent such a state, water is replenished according to the state of water absorption on the surface of the coating material. However, it is preferable to replenish water a plurality of times according to the water absorbing ability of the base material. In each case, hydration is completed at the end of the hydration reaction, that is, at an early stage until the cement-based inorganic bonding agent mixes with water to form a hydrate and hardens. There is a need to.

In such a case, although it depends on the moisture absorption capacity and the thickness of the coating film, if it is earlier, the moisture on the surface of the coating film disappears within a few minutes after application, and the state can be easily confirmed.

In this case, the pigment colored in the cement-based inorganic bonding agent is not affected by water replenishment due to the early curing of the cement-based inorganic bonding agent.

[0151] Further, when water is applied to a molded product in a factory or the like where water can be used even when water vapor can be used, it also replenishes moisture and leads to favorable early curing of the molded product, thereby increasing efficiency.
In this case, better early curing can be expected as the temperature of the steam becomes higher.

[016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be specifically described below. The base material is e.Wall moisture absorption board manufactured by Tanya Sangyo Co., Ltd. The moisture absorption performance is 25 ° C. × 50% RH.4
8h → 25 ℃ × 90% RH.24h (moisture absorption) 25 ℃ × 50% RH.24
A material having a high moisture absorption performance having a performance of h (dehumidification) g / m ² 227 was used.

[0173] White Portland cement, calcium carbonate-based powder, silicon dioxide-based powder, activated carbon, resin emulsion, and pigment were blended as a cement-based inorganic bonding agent, and water was added thereto with stirring to obtain an aqueous paint having high hygroscopicity.

[0182] Under the conditions of room temperature 28 ° C and humidity 55%, prepare the above three moisture absorbing boards, submerge one in water, absorb enough water, and leave the two pieces as they are. The above paint was applied by spraying to a film thickness of 0.5 mm.

When the surface after spraying was observed, except for one of the submerged ones, the surface water was lost in 2 minutes and the surface became dry, but one of the submerged ones until the surface became dry
It took 15 minutes.

One submerged moisture-absorbing board and the other one were left as they were and dried. Also, 30 minutes after application to the remaining one moisture absorbing board, water was sprayed on the surface by spraying. However, since the surface became dry again, spraying of water was performed for 3 minutes.
After repeating this time, it was left to dry.

After 24 hours, when the paints applied to the above three moisture absorbing boards were compared, the powder which was not submerged nor sprayed with water had a powdery composition floating on the surface, When touched by hand, a large amount of powdery substances adhered to the hand. The submerged one was slightly powdery but adhered to the hand, leaving a slight powder feel on the surface. However, when spraying water on the surface, powdery substances do not adhere to the hands at all, there is no touch,
Hardness was also high. In addition, the pigment was observed, but the pigment did not bleed and the color was excellent as compared with the previous two sheets.

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

[Procedure amendment]

[Submission date] October 18, 2000 (2000.10.
18)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Submission date] November 6, 2000 (200.11.
6)

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Detailed description of the invention

[Correction method] Change

[Correction contents]

DETAILED DESCRIPTION OF THE INVENTION

[001]

[Industrial applications] For interior materials etc. indoors,
Since the sick house syndrome occurs frequently, many human-friendly building materials mainly composed of inorganic agents have been developed. Among them, a non-flammable, humidity-adjusting base material having a high moisture absorption / release effect has attracted attention, including an effect of preventing dew condensation. The invention of the present application can be expected to spread human-friendly interior materials suitable for the climate of Japan by solving the problems of the humidity-adjusting building materials, and solve the disadvantages of the cement-based inorganic bonding agent in various fields. A wide range of demand can be expected.

[002]

2. Description of the Related Art A water-based paint and a water-based coating agent containing a cement-based inorganic binder as a component are used to spray water on the base material to lower the temperature of the base material when the temperature of the base material becomes high when the temperature is high. Although the hydration reaction was stabilized by suppressing evaporation, a stable hydration reaction could not be expected depending on the working area. In addition, recently, with the spread of humidity adjustment interior materials, water absorption,
Highly hygroscopic materials are used. When finishing the surface of such a substrate, the moisture of the coating material is rapidly taken away,
The surface of the coating film is fragile, and the powder is in a state of being sprayed and often stains clothes when touched.

[003]

The incomplete hydration reaction which occurs when the temperature is high or when the temperature of the substrate to be applied is high is a water-based paint and water-based coating material containing a cement-based inorganic binder as an essential component. Degrades strength and hardness.

In the case of a humidity-adjusting building material, it is often formed from a base material, and there remains a problem in designability. In the case of coloring, patterning, and patterning, it is necessary to maintain the moisture absorption and moisture release performance, so that moisture absorption equal to or more than the humidity adjustment building material,
It is necessary to add coloring, design, and design to the material with moisture release effect to secure the design.

[005] A cloth or paper with high moisture permeability can also be applied, but pasting will necessitate a certain type of gluing action, lowering the function of the building material itself, and making it difficult to ensure nonflammability. Some of them expand and contract by absorbing water.

In addition, aqueous inorganic paints and coating materials having a moisture absorbing and releasing performance have been used in the past, but most of them have dust left on the surface, and when touched, the dust adheres and may stain clothes. Depending on the particle size of the dust, it floats in the air and is not preferable for sanitation. It can even fall on the floor and soil the floor.

[007]

Means for Solving the Problems The invention described in claim 1 of the present application relates to a water-based paint and a water-based paint containing a cement-based inorganic binder generated as an essential component when the temperature is high or when the temperature of the substrate to be applied is high. It is characterized in that the brittleness is prevented by the incomplete hydration reaction due to the early evaporation of the moisture of the coating material and the crack is prevented by adjusting the water supply on the surface of the coated material after coating. In addition, the hydration reaction referred to in the present invention means that the cement-based inorganic bonding agent is mixed with water to form a hydrate and hardens.

The invention described in claim 2 of the present application is based on the fact that the water-based paint and the water-based coating material containing the cement-based inorganic bonding agent as an essential component are based on the incomplete hydration reaction generated by the water absorption and moisture absorption properties of the base material. After coating, the prevention of brittleness and cracks on the coating film surface is prevented by adjusting the water supply on the surface of the coating material.

[009] In the invention described in claim 3 of the present application, the water-based paint and the water-based coating material having cement-based inorganic bonding as an essential component have water absorption, moisture absorption ability, or the purpose thereof, and have the same kind of ability and purpose. Prevention of brittleness and cracks on the surface of the coating film due to incomplete hydration reaction that occurs when the composition is applied to a substrate is prevented by adjusting the water supply on the surface of the coating material after coating.

[0102] The invention described in claim 4 of the present application is characterized in that the water-based paint and the coating material containing the cement-based inorganic binder as an essential component have water absorption and moisture absorption performance or the purpose thereof, and Is unspecified, cracks are prevented and brittleness deterioration of the coated surface is prevented by adjusting the water supply on the coated surface after coating.

[0111] When the temperature is high, the temperature of the base material often rises. By applying the water-based paint and the coating material referred to in the present application to such a base material, evaporation of moisture rapidly occurs, and The hydration reaction is incomplete and a brittle coating is formed. In this case, water is supplied to the surface coating according to the degree of evaporation of the water. This replenishment method is preferably a method in which pressure is not applied to the surface coating film, for example, by using a sprayer, a sprayer or the like.

Further, even in the case of a substrate having high water absorption and moisture absorption performance irrespective of the temperature, cracks occur due to incomplete hydration reaction because the coating material according to the present invention rapidly absorbs water. Alternatively, a powdery substance floats on the surface, and the powdery composition adheres when touched. In order to prevent such a state, water is replenished according to the state of water absorption on the surface of the coating material. However, it is preferable to replenish water a plurality of times according to the water absorbing ability of the base material. In each case, hydration is completed at the end of the hydration reaction, that is, at an early stage until the cement-based inorganic bonding agent mixes with water to form a hydrate and hardens. There is a need to.

In such a case, although it depends on the moisture absorption capacity and the thickness of the coating film, if it is earlier, the moisture on the surface of the coating film disappears within a few minutes after application, and the state can be easily confirmed.

In this case, the pigment colored in the cement-based inorganic bonding agent is not affected by water replenishment due to the early curing of the cement-based inorganic bonding agent.

The invention described in claim 5 is characterized in that it is washed away with water, and is effective for a substrate having a rough surface such as a porous material. Features that can express coloring, patterns, and patterns without impairing the function, and design properties can be secured without substantially changing the thickness of the base material. In this case, the particles of the water-based paint and the coating material used are preferably fine particles. In addition, the indication of moisture according to all of the above-mentioned inventions may be made of water vapor, and when it is applied to and coated on a molded product in a factory or the like where equipment is available, it also provides water replenishment and leads to favorable early curing of the molded product, thereby increasing efficiency. in this case,
The higher the steam temperature, the better the early curing can be expected.

[016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be specifically described below. The base material is e.Wall moisture absorption board manufactured by Tanya Sangyo Co., Ltd. The moisture absorption performance is 25 ° C. × 50% RH.4
8h → 25 ℃ × 90% RH.24h (moisture absorption) 25 ℃ × 50% RH.24
A material having a high moisture absorption performance having a performance of h (dehumidification) g / m ² 227 was used.

[0173] White Portland cement, calcium carbonate-based powder, silicon dioxide-based powder, activated carbon, resin emulsion, and pigment were blended as a cement-based inorganic bonding agent, and water was added thereto with stirring to obtain an aqueous paint having high hygroscopicity.

[0182] Under the conditions of room temperature 28 ° C and humidity 55%, prepare the above three moisture absorbing boards, submerge one in water, absorb enough water, and leave the two pieces as they are. The above paint was applied by spraying to a film thickness of 0.5 mm.

When the surface after spraying was observed, except for one of the submerged ones, the surface water was lost in 2 minutes and the surface became dry, but one of the submerged ones until the surface became dry
It took 15 minutes.

One submerged moisture-absorbing board and the other one were left as they were and dried. Also, 30 minutes after application to the remaining one moisture absorbing board, water was sprayed on the surface by spraying. However, since the surface became dry again, spraying of water was performed for 3 minutes.
After repeating this time, it was left to dry.

After 24 hours, when the paints applied to the above three moisture absorbing boards were compared, the powder which was not submerged nor sprayed with water had a powdery composition floating on the surface, When touched by hand, a large amount of powdery substances adhered to the hand. The submerged one was slightly powdery but adhered to the hand, leaving a slight powder feel on the surface. However, when spraying water on the surface, powdery substances do not adhere to the hands at all, there is no touch,
Hardness was also high. In addition, the pigment was observed, but the pigment did not bleed and the color was excellent as compared with the previous two sheets.

[0222] In claim 5, a spray is applied to the board.
After 3 minutes, rinsed with water and observed the board.The whole surface of the base material was colored, and there was no change even after drying. there were. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 7, 2000 (200.11.
7)

[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] Detailed description of the invention

[Correction method] Change

[Correction contents]

DETAILED DESCRIPTION OF THE INVENTION

[001]

[Industrial applications] For interior materials etc. indoors,
Since the sick house syndrome occurs frequently, many human-friendly building materials mainly composed of inorganic agents have been developed. Among them, a non-flammable, humidity-adjusting base material having a high moisture absorption / release effect has attracted attention, including an effect of preventing dew condensation. The invention of the present application can be expected to spread human-friendly interior materials suitable for the climate of Japan by solving the problems of the humidity-adjusting building materials, and solve the disadvantages of the cement-based inorganic bonding agent in various fields. A wide range of demand can be expected.

[002]

2. Description of the Related Art A water-based paint and a water-based coating agent containing a cement-based inorganic binder as a component are used to spray water on the base material to lower the temperature of the base material when the temperature of the base material becomes high when the temperature is high. Although the hydration reaction was stabilized by suppressing evaporation, a stable hydration reaction could not be expected depending on the working area. In addition, recently, with the spread of humidity adjustment interior materials, water absorption,
Highly hygroscopic materials are used. When finishing the surface of such a substrate, the moisture of the coating material is rapidly taken away,
The surface of the coating film is fragile, and the powder is in a state of being sprayed and often stains clothes when touched.

[003]

The incomplete hydration reaction which occurs when the temperature is high or when the temperature of the substrate to be applied is high is a water-based paint and water-based coating material containing a cement-based inorganic binder as an essential component. Degrades strength and hardness.

In the case of a humidity-adjusting building material, it is often formed from a base material, and there remains a problem in designability. In the case of coloring, patterning, and patterning, it is necessary to maintain the moisture absorption and moisture release performance, so that moisture absorption equal to or more than the humidity adjustment building material,
It is necessary to add coloring, design, and design to the material that has a moisture releasing effect to ensure the design.

[005] A cloth or paper with high moisture permeability can also be applied, but pasting will necessitate a certain type of gluing action, lowering the function of the building material itself, and making it difficult to ensure nonflammability. Some of them expand and contract by absorbing water.

In addition, aqueous inorganic paints and coating materials having a moisture absorbing and releasing performance have been used in the past, but most of them have dust left on the surface, and when touched, the dust adheres and may stain clothes. Depending on the particle size of the dust, it floats in the air and is not preferable for sanitation. It can even fall on the floor and soil the floor.

[007]

Means for Solving the Problems The invention described in claim 1 of the present application relates to a water-based paint and a water-based paint containing a cement-based inorganic binder generated as an essential component when the temperature is high or when the temperature of the substrate to be applied is high. It is characterized in that the brittleness is prevented by the incomplete hydration reaction due to the early evaporation of the moisture of the coating material and the crack is prevented by adjusting the water supply on the surface of the coated material after coating. In addition, the hydration reaction referred to in the present invention means that the cement-based inorganic bonding agent is mixed with water to form a hydrate and hardens.

The invention described in claim 2 of the present application is based on the fact that the water-based paint and the water-based coating material containing the cement-based inorganic bonding agent as an essential component are based on the incomplete hydration reaction generated by the water absorption and moisture absorption properties of the base material. After coating, the prevention of brittleness and cracks on the coating film surface is prevented by adjusting the water supply on the surface of the coating material.

[009] In the invention described in claim 3 of the present application, the water-based paint and the water-based coating material having cement-based inorganic bonding as an essential component have water absorption, moisture absorption ability, or the purpose thereof, and have the same kind of ability and purpose. Prevention of brittleness and cracks on the surface of the coating film due to incomplete hydration reaction that occurs when the composition is applied to a substrate is prevented by adjusting the water supply on the surface of the coating material after coating.

[0102] The invention described in claim 4 of the present application is characterized in that the water-based paint and the coating material containing the cement-based inorganic binder as an essential component have water absorption and moisture absorption performance or the purpose thereof, and Is unspecified, cracks are prevented and brittleness deterioration of the coated surface is prevented by adjusting the water supply on the coated surface after coating.

[0111] When the temperature is high, the temperature of the base material often rises. However, by applying the water-based paint and the coating material referred to in the present application to such a base material, evaporation of moisture rapidly occurs and the coating material The hydration reaction is incomplete and a brittle coating is formed. In this case, water is supplied to the surface coating according to the degree of evaporation of the water. This replenishment method is preferably a method in which pressure is not applied to the surface coating film, for example, by using a sprayer, a sprayer or the like.

Further, even in the case of a substrate having high water absorption and moisture absorption performance irrespective of the temperature, cracks occur due to incomplete hydration reaction because the coating material according to the present invention rapidly absorbs water. Alternatively, a powdery substance floats on the surface, and the powdery composition adheres when touched. In order to prevent such a state, water is replenished according to the state of water absorption on the surface of the coating material. However, it is preferable to replenish water a plurality of times according to the water absorbing ability of the base material. In each case, hydration is completed at the end of the hydration reaction, that is, at an early stage until the cement-based inorganic bonding agent mixes with water to form a hydrate and hardens. There is a need to.

In such a case, although it depends on the moisture absorption capacity and the thickness of the coating film, if it is earlier, the moisture on the surface of the coating film disappears within a few minutes after application, and the state can be easily confirmed.

In this case, the pigment colored in the cement-based inorganic bonding agent is not affected by water replenishment due to the early curing of the cement-based inorganic bonding agent.

The invention described in claim 5 is characterized in that it is washed away with water, and is effective for a substrate having a rough surface such as a porous material. Features that can express coloring, patterns, and patterns without impairing the function, and design properties can be secured without substantially changing the thickness of the base material. In this case, the particles of the water-based paint and the coating material used are preferably fine particles. In addition, the indication of moisture according to all of the above-mentioned inventions may be made of water vapor, and when it is applied to and coated on a molded product in a factory or the like where equipment is available, it also provides water replenishment and leads to favorable early curing of the molded product, thereby increasing efficiency. in this case,
The higher the temperature of the steam, the better early curing can be expected.
The invention described in claim 6 is that the base material absorbs moisture in advance and absorbs water, so that the retained water is 30 ° C. or more, preferably 80 ° C. to 150 ° C., from the opposite surface of the coated material, that is, from the back side.
Deterioration of coated material due to incomplete hydration reaction that occurs due to insufficient water on the surface of coated material and overall coated material due to evaporation and vaporization of water retained in the substrate by heating, warm air, etc. , And vulnerabilities.
Further, the invention according to claim 7 is a method in which the above method and water replenishment from the surface of the applied material are used in combination, and in order to prevent the incomplete hydration reaction, an aqueous paint containing a cement inorganic binder as an essential component and It is more effective for coating materials.

[016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be specifically described below. The base material is e.Wall moisture absorption board manufactured by Tanya Sangyo Co., Ltd. The moisture absorption performance is 25 ° C. × 50% RH.4
8h → 25 ℃ × 90% RH.24h (moisture absorption) 25 ℃ × 50% RH.24
A material having a high moisture absorption performance having a performance of h (dehumidification) g / m ² 227 was used.

[0173] White Portland cement, calcium carbonate-based powder, silicon dioxide-based powder, activated carbon, resin emulsion, and pigment were blended as a cement-based inorganic bonding agent, and water was added thereto with stirring to obtain an aqueous paint having high hygroscopicity.

[0182] Under the conditions of room temperature 28 ° C and humidity 55%, prepare the above three moisture absorbing boards, submerge one in water, absorb enough water, and leave the two pieces as they are. The above paint was applied by spraying to a film thickness of 0.5 mm.

When the surface after spraying was observed, except for one of the submerged ones, the surface water was lost in 2 minutes and the surface became dry, but one of the submerged ones until the surface became dry
It took 15 minutes.

One submerged moisture-absorbing board and the other one were left as they were and dried. Also, 30 minutes after application to the remaining one moisture absorbing board, water was sprayed on the surface by spraying. However, since the surface became dry again, spraying of water was performed for 3 minutes.
After repeating this time, it was left to dry.

After 24 hours, when the paints applied to the above three moisture absorbing boards were compared, the powder which was not submerged nor sprayed with water had a powdery composition floating on the surface, When touched by hand, a large amount of powdery substances adhered to the hand. The submerged one was slightly powdery but adhered to the hand, leaving a slight powder feel on the surface. However, when spraying water on the surface, powdery substances do not adhere to the hands at all, there is no touch,
Hardness was also high. In addition, the pigment was observed, but the pigment did not bleed and the color was excellent as compared with the previous two sheets.

[0222] In claim 5, a spray is applied to the board.
After 3 minutes, rinsed with water and observed the board.The whole surface of the base material was colored, and there was no change even after drying. there were.

According to claim 6, after the board is submerged for 1 minute to retain water, the coated material is applied under the same conditions, and hot air of 130 ° C. is blown from the opposite side of the board, that is, from the back surface. Observation was made 10 minutes after the rise of water vapor, and the surface of the coated product was found to be hardened by a good hydration reaction. The warm air was stopped, and the coated product was dried and cured well when left standing for 20 minutes. Also, 24
After the time, the hardness was further confirmed. Regarding claim 7,
The coating was applied to the board under the same conditions as described above, and the surface of the coating was hydrated with a spray while heating with hot air. Observation was conducted 10 minutes after the above. After further standing for 20 minutes, it seemed that there was almost no change from the above-mentioned dried and cured, but after 24 hours, it was confirmed that the hardness of the entire coated product was higher than that of the dried and cured one.

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 4D075 BB79Z CA02 CA03 CA37 CA39 CA40 DA06 DA23 DC01 EA06 EB03 4F100 AD11 AE00 AE01A AE09 AP10 AR00B AT00B BA02 CA13 CA23A CC00A EH462 EJ982 GB07 JB05A JC01 JD014J01 DC1 AA011 HA496 MA08 NA01 NA06 NA11 PB05 PC06

Claims (4)

[Claims] An aqueous paint and an aqueous coating material containing a cement-based inorganic bonding agent as an essential component are applied, and after application, the applied material has good strength and hardness by rehydrating the surface of the applied material. . 2. A water-based paint and a water-based coating material having a cement-based inorganic bonding agent as an essential component are applied to the surface of a molded product having high water absorbency and hygroscopicity or intended for the purpose, and after the application,
It is characterized in that the applied material has good strength and hardness by rehydrating the surface of the applied material. 3. A water-based paint and a water-based coating material having a cement-based inorganic bonding agent as an essential component have a water-absorbing and moisture-absorbing purpose, and are applied to a substrate having the same water-absorbing and moisture-absorbing purpose. It is characterized in that the coated material has good strength and hardness by hydration of the surface. 4. A water-based paint and a water-based coating material having a cement-based inorganic binder as an essential component have a water-absorbing and moisture-absorbing purpose, and are applied to various unspecified base materials. Is characterized in that the applied material has good strength and hardness by hydration.