JP5429453B2 - Water-containing coating composition containing lime - Google Patents

Description

  The present invention relates to a non-water-curable water-containing coating composition containing lime, particularly slaked lime, as a film component, and a board or sheet having a coating layer formed from the coating composition on a substrate surface.

  The present invention also relates to an improvement of a non-water-curable water-containing coating composition containing lime as a film component. More specifically, regarding a non-water-curable water-containing coating composition containing lime as a film component, a method for improving fluidity, a method for improving adhesion to a substrate, a method for uniformly stabilizing adhesion, and crack resistance It is related with the improvement method.

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

  However, plaster and dolomite plaster have the disadvantages that they are large in shrinkage at the time of drying and curing and are liable to crack. In particular, cracking is likely to occur because the drying shrinkage rate increases when thickly applied. For this reason, conventional plaster and dolomite plaster have a thickness of 1 to 2 mm or less, using a material containing fiber materials such as sasa (thin cut, hemp, paper, etc. cut short) to prevent cracking. An application method is employed in which thin coating, once drying and curing, and then top coating from the top are repeated to finish to a desired thickness. Furthermore, in order to prevent cracking, a high level of craftsmanship is required to average the drying shrinkage of the film while adjusting the pressing degree of the iron during overcoating. For this reason, the construction of plaster and dolomite plaster required a skillful technique and a long construction period, and as a result, there was a problem that the cost was great. Moreover, since lime has a high thixotropic flow characteristic, there is a problem that the flowability is poor and the aqueous dispersion is agglomerated if it is left standing for a certain period.

  For these reasons, lime, such as plaster and dolomite plaster, especially coating materials mainly composed of slaked lime, are mainly entrusted to wet construction (on-site construction) by human hands.

By the way, as a method conventionally proposed as a method for preventing cracking of plaster and dolomite plaster, for example, as a coating composition, lime-based containing slaked lime and / or dolomite plaster, styrene butadiene rubber latex, welan gum and a surfactant. A method using a plaster composition (Patent Document 1), a method using a composition containing silica sand, synthetic resin, soot, clay component, dispersant, cellulosic thickener and antifoaming agent in a specific ratio to slaked lime ( Patent Document 2), a method of using a composition containing aggregate, synthetic resin binder, and wheat fiber at a specific ratio in slaked lime (Patent Document 3), lime-based plaster, ethylenically unsaturated dicarboxylic acid monomer and A lime-based plastic compounded with a lime-based plaster modifier containing latex obtained by emulsion polymerization of vinyl monomers. Examples include a method of using a star composition (Patent Document 4) and a method of adding a compound having a chelating action to calcium ions (chelate compound) (Patent Document 5) in a coating composition containing lime as a film component. be able to.
Among them, the method described in Patent Document 5 is effective in preventing cracking of a film formed from a coating composition containing lime such as plaster and dolomite plaster, lime-based finish coating material, lime-based paint, and the like. In addition to being excellent, it is useful as a method for reducing the thixotropic flow properties of lime.

  However, in order to use such a coating composition containing lime as a film component for coating on an industrial line, it must have fluidity suitable for an industrial coating machine such as a flow coater. It is also necessary to have crack resistance (crack resistance) that can withstand forced drying on industrial lines.

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

  The present invention is a coating composition containing lime, preferably slaked lime, water, and a binder, and uses a composition excellent in fluidity and dispersibility in addition to the crack resistance of the film, particularly a flow coater. An object of the present invention is to provide an improved coating composition which can be suitably used for painting on an industrial line. Another object of the present invention is to provide a boat or a sheet having such a coating composition as a coating layer, and a method for producing the boat or sheet. Furthermore, the present invention is directed to a non-water-curable water-containing coating composition containing lime as a film component, a method for improving fluidity, an adhesion to a substrate, and a uniform stabilization of the adhesion. It is an object of the present invention to provide a method and a method for improving crack resistance.

  The present inventor has conducted intensive studies day and night to achieve the above object, and blended a non-polar amino acid, an amino acid polymer or a salt thereof with a water-containing coating composition containing lime, particularly slaked lime, as a film component. As a result, the fluidity and dispersibility of the water-containing coating composition are improved, and the viscosity, which is apparently opposite to the fluidity, is produced, and the formed film is less likely to be cracked. It was. Further, the present inventor has improved the adhesion to the object to be coated (base material) due to the occurrence of viscosity, and combined with the improvement in dispersibility, provides a uniform and stable adhesion to the surface of the object to be coated. The present inventors have found that the coating film can be formed, and further, due to the fluidity and appropriate viscosity, the curtain breakage hardly occurs when applied to a flow coater which is an industrial coating machine. Therefore, according to the above technique, the present inventor can apply a water-containing coating composition containing lime as a film component to a flow coater or the like to perform mass coating on an industrial line, that is, lime. It was confirmed that a boat or a sheet as a coating layer can be manufactured industrially. The present invention has been developed based on such knowledge.

The present invention includes the following embodiments I to VIII:
I. Non-water-curable water-containing coating composition (I-1) comprising (a) lime, (b) water, (c) binder, and (d) non-polar amino acid, non-polar amino acid polymer, and salts thereof A coating composition comprising at least one selected from the group.
(I-2) The coating composition according to (I-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has one or more hydrophobic indexes.
(I-3) The coating composition according to (I-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has a hydrophobic index of 3 or more.
(I-4) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is at least one selected from the group consisting of alanine, methionine, cysteine, phenylalanine, leucine, valine, and isoleucine , (I-1) or (I-2).
(I-5) The coating composition according to any one of (I-1) to (I-4), further comprising (e) a chelate compound.
(I-6) The coating composition according to (I-5), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(I-7) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The coating composition according to (I-6), which is a seed. (I-8) The coating composition according to any one of (I-5) to (I-7), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(I-9) The coating composition according to any one of (I-5) to (I-8), further comprising (f) a silicon compound.
(I-10) The coating composition according to (I-9), wherein the silicon compound is at least one selected from the group consisting of zeolite, silica, diatomaceous earth, fly ash, sepiolite, sodium silicate, and sodium metasilicate. object.
(I-11) The coating composition according to any one of (I-1) to (I-10), further comprising (g) a white pigment.
(I-12) The coating composition according to any one of (I-1) to (I-11), further comprising (h) an aggregate.
(I-13) The coating composition according to any one of (I-1) to (I-12), wherein the coating composition is a paint, a coating material, a sealer, a primer, or an adhesive.
(I-14) The coating composition according to any one of (I-1) to (I-13), which is a coating composition used for painting with an industrial coating machine.
(I-15) The coating composition according to (I-14), wherein the industrial coating machine is a spray, flow coater, roll coater, knife coater, or vacuum coater, preferably a flow coater.

II. Coating composition package (II-1) A coating composition package comprising the coating composition described in any one of (I-1) to (I-15) above in a container.
(II-2) The coating composition package according to (II-1), wherein the container is a flexible container.

III. Method for producing coating composition for industrial coating machine (III-1) (a) Film component containing lime, and (d) at least selected from the group consisting of nonpolar amino acids, nonpolar amino acid polymers and salts thereof A method for producing a coating composition, preferably a coating composition for industrial coating machines, comprising the step of preparing one kind together with (b) water and (c) a binder to prepare a liquid or paste.
(III-2) The production method according to (II-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has one or more hydrophobic indexes.
(III-3) The production method according to (II-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has a hydrophobic index of 3 or more.
(III-4) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is at least one selected from the group consisting of alanine, methionine, cysteine, phenylalanine, leucine, valine, and isoleucine , (III-1) or (III-2).
(III-5) The production method according to any one of (III-1) to (III-4), further comprising (e) a chelate compound.
(III-6) The production method according to (III-5), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(III-7) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The production method according to (III-6), which is a seed. (III-8) The production method according to any one of (III-5) to (III-7), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(III-9) The method according to any one of (III-5) to (III-8), further comprising (f) a silicon compound.
(III-10) The production method according to (III-9), wherein the silicon compound is at least one selected from the group consisting of zeolite, silica, diatomaceous earth, fly ash, sepiolite, sodium silicate, and sodium metasilicate. .
(III-11) The production method according to any one of (III-1) to (III-10), further comprising (g) a white pigment.
(III-12) The production method according to any one of (III-1) to (III-11), further comprising (h) an aggregate.
(III-13) The production method according to any one of (III-1) to (III-12), wherein the coating composition is a paint, a coating material, a sealer, a primer, or an adhesive.
(III-14) The production method according to any one of (III-1) to (III-13), wherein the industrial coating machine is a spray, flow coater, roll coater, knife coater or vacuum coater, preferably a flow coater. .

IV. Board or sheet and board or sheet having a coating layer formed from the coating composition according to any one of (I-1) to (I-15) on the surface of the substrate (IV-1) and the production method thereof (IV-1) .
(IV-2) having a coating layer formed from the coating composition described in any one of (I-1) to (I-15) on the surface of the base material, and a protective sheet laminated on the surface of the coating layer The board or sheet according to (IV-1), wherein the surface of the coating layer is antifouling treated.
(IV-3) The board according to (IV-1), comprising a step of applying the coating composition according to any one of (1) (I-1) to (I-15) to the surface of the substrate Sheet manufacturing method.
(IV-4) (1) a step of applying the coating composition according to any one of (I-1) to (I-15) on the surface of the substrate, and (2) a coating formed from the composition The method for producing a board or sheet according to (IV-2), comprising a step of laminating a protective sheet on the surface of the layer or performing an antifouling treatment.

V. Method for improving fluidity of water-containing coating composition containing lime as film component (V-1) (d) Formulating at least one selected from the group consisting of nonpolar amino acids, nonpolar amino acid polymers and salts thereof A method for improving the fluidity of a coating composition containing (a) lime, (b) water, and (c) a binder.
(V-2) The fluidity improving method according to (V-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has one or more hydrophobic indexes.
(V-3) The fluidity improving method according to (V-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has a hydrophobic index of 3 or more.
(V-4) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is at least one selected from the group consisting of alanine, methionine, cysteine, phenylalanine, leucine, valine, and isoleucine. , (V-1) or (V-2).
(V-5) The fluidity improving method according to any one of (V-1) to (V-4), further comprising (e) a chelate compound.
(V-6) The fluidity improving method according to (V-5), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(V-7) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The fluidity improving method according to (V-6), which is a seed. (V-8) The fluidity improving method according to any one of (V-5) to (V-7), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(V-9) The fluidity improving method according to any one of (V-1) to (V-8), further comprising (g) a white pigment.
(V-10) The coating composition further includes at least one selected from the group consisting of (h) an aggregate and (f) a silicon compound. (V-1) to (V-9) Fluidity improvement method to be described.

VI. Method for improving adhesion or uniform stabilization of water-containing coating composition containing lime as a film component (VI-1) (d) selected from the group consisting of nonpolar amino acids, nonpolar amino acid polymers and salts thereof (A) lime, (b) water, and (c) a method for improving the adhesion of a coating composition containing a binder to a substrate or for uniformly stabilizing the adhesion, .
(VI-2) The method for improving adhesion force or uniformly stabilizing adhesion force according to (VI-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has one or more hydrophobic indexes.
(VI-3) The method for improving adhesion force or uniformly stabilizing adhesion force according to (VI-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has a hydrophobic index of 3 or more.
(VI-4) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is at least one selected from the group consisting of alanine, methionine, cysteine, phenylalanine, leucine, valine, and isoleucine , (VI-1) or (VI-2), a method for improving adhesion or uniformly stabilizing adhesion.
(VI-5) The method for improving adhesive force or uniformly stabilizing adhesive force according to any one of (VI-1) to (VI-4), further comprising (e) a chelate compound.
(VI-6) The method for improving adhesion or uniformly stabilizing adhesion described in (VI-5), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(VI-7) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The method for improving adhesion or uniformly stabilizing adhesion as described in (VI-6), which is a seed. (VI-8) The method for improving adhesive force or uniformly stabilizing adhesive force according to any one of (VI-5) to (VI-7), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(VI-9) The method of improving adhesive force or uniformly stabilizing adhesive force according to any one of (VI-1) to (VI-8), wherein the coating composition further comprises (f) a silicon compound.
(VI-10) The coating composition further comprises at least one selected from the group consisting of (g) a white pigment and (h) an aggregate, wherein any of (VI-1) to (VI-9) A method for improving adhesion or uniformly stabilizing adhesion.
(VI-11) It was formed from a coating composition whose adhesion to the substrate was improved by the method described in any of (VI-1) to (VI-10) above, or whose adhesion was uniformly stabilized A coating having a film.
(VI-12) The coating according to (VI-11), wherein the coating having the film is a board or a sheet.

VII. Method for improving crack resistance of coating composition containing lime as film component (VII-1) (d) Formulating at least one selected from the group consisting of nonpolar amino acids, nonpolar amino acid polymers and salts thereof A method for improving crack resistance of a coating composition containing (a) lime, (b) water, and (c) a binder.
(VII-2) The method for improving crack resistance according to (VII-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has one or more hydrophobic indexes.
(VII-3) The crack resistance improving method according to (VII-1), wherein the nonpolar amino acid or the nonpolar amino acid polymer has a hydrophobic index of 3 or more.
(VII-4) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is at least one selected from the group consisting of alanine, methionine, cysteine, phenylalanine, leucine, valine, and isoleucine , (VII-1) or (VII-2) described in the method for improving crack resistance.
(VII-5) The method for improving crack resistance according to any one of (VII-1) to (VII-4), further comprising (e) a chelate compound.
(VII-6) The method for improving crack resistance according to (VII-5), wherein the chelate compound is an organic chelate compound or an inorganic chelate compound having a molecular weight of 1000 or less.
(VII-7) The organic chelate compound is at least one selected from the group consisting of a carboxylic acid chelate compound, a phosphonic acid chelate compound, a phosphoric acid chelate compound, a sulfonic acid chelate compound and a reducing organic acid chelate compound. The method for improving crack resistance according to (VII-6), which is a seed. (VII-8) The method for improving crack resistance according to any one of (VII-5) to (VII-7), wherein the chelate compound is a chelate compound having a molecular weight of 600 or less.
(VII-9) The method for improving crack resistance according to any one of (VII-1) to (VII-8), wherein the coating composition further comprises (f) a silicon compound.
(VII-10) A coating having a crack resistant film formed from a coating composition having improved crack resistance by the method described in any one of (VII-1) to (VII-9) above.
(VII-11) The coating according to (VII-10), wherein the coating having the film is a board or a sheet.

VIII. Use of polar amino acids (VIII-1) (d) Nonpolar amino acids, nonpolar amino acid polymerizations to improve the fluidity of coating compositions containing (a) lime, (b) water and (c) binders And at least one selected from the group consisting of salts thereof.
(VIII-2) (d) Nonpolar amino acids for improving the adhesion of coating compositions containing (a) lime, (b) water and (c) binders, and for stabilizing the adhesion uniformly , At least one selected from the group consisting of nonpolar amino acid polymers and salts thereof.
(VIII-3) (d) Nonpolar amino acids, nonpolar amino acid polymers and their compounds for improving the crack resistance of coating compositions containing (a) lime, (b) water and (c) binders At least one selected from the group consisting of:
(VIII-4) (d) a nonpolar amino acid, a nonpolar amino acid polymer and (d) a non-polar amino acid polymer for the production of a coating composition for industrial coating machines containing (a) lime, (b) water and (c) a binder; Use of at least one selected from the group consisting of those salts.
(VIII-5) (d) a nonpolar amino acid, a nonpolar amino acid polymer and (d) a non-polar amino acid polymer for the production of a coating composition for industrial coating machines containing (a) lime, (b) water and (c) a binder. Use of (d) a chelate compound with at least 1 sort (s) selected from the group which consists of those salts.
(VIII-6) Use according to (VIII-4) or (VIII-5), wherein the industrial coating machine is a spray, flow coater, roll coater, knife coater or vacuum coater, preferably a flow coater.
(VIII-7) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is any one of (VIII-1) to (VIII-6), which has one or more hydrophobic indexes Use to.
(VIII-8) The nonpolar amino acid or the nonpolar amino acid constituting the nonpolar amino acid polymer is at least one selected from the group consisting of alanine, methionine, cysteine, phenylalanine, leucine, valine, and isoleucine The use according to any one of (VIII-1) to (VIII-7).

  (1) Incorporating nonpolar amino acids, amino acid polymers or salts thereof (hereinafter collectively referred to as “nonpolar amino acids”) into a water-containing coating composition containing lime as a film component. As a result, viscosity is generated in the coating composition, adhesion to the substrate that is the object to be coated is improved, and resistance to cracking (cracking resistance) can be imparted to the formed film. In addition, by blending non-polar amino acids with a water-containing coating composition containing lime as a film component, the fluidity, which is apparently opposite to the above viscosity, is improved, and further to solid water such as lime. Dispersibility is improved. From these, the following can be specifically mentioned as the effects of the present invention.

  (1-1) A film having excellent durability can be formed by improving the adhesion to the base material (the tensile strength of the film to the base material). When the water-containing coating composition is a composition containing a binder, the coating composition, particularly as a paint, coating material, sealer, primer, or adhesive, exhibits more desirable adhesion to the substrate. Can do.

  (1-2) In addition to the above characteristics, by improving water dispersibility, it is possible to form a film having a uniform and stable adhesion to an object to be coated (base material).

  (1-3) Since a viscous water-containing coating composition can be obtained, a conventional non-water-curable coating composition containing lime as a film component (such as plaster, dolomite plaster, lime-based finish coating material, and lime-based paint) It is possible to significantly suppress cracking of the coating film during drying, which has been a problem with respect to. Moreover, since forced drying is possible, the board and sheet | seat which use the coating composition of this invention as a coating layer can be manufactured with an industrial coating line.

  (1-4) Since a water-containing coating composition with excellent fluidity and moderate viscosity can be obtained, it can be suitably applied to a flow coater that coats the object to be coated by pouring paint, etc. from a narrow slit into a curtain. be able to. That is, according to the water-containing coating composition of the present invention, boards and sheets having this as a coating layer can be produced industrially in large quantities using an industrial coating machine such as a flow coater.

  (2) In addition to non-polar amino acids, the following can be mentioned as effects obtained by further adding a chelate compound.

  (2-1) In addition to the non-polar amino acids described above, in addition to the above nonpolar amino acids, the adhesion, crack resistance and fluidity are further improved by adding the water-containing coating composition containing lime as a film component, The thixotropy of slaked lime is relaxed, reaggregation when the coating composition is stored is suppressed, and fluidity and viscosity can be stably maintained.

  (2-2) In addition to the nonpolar amino acids described above, a chelating compound is added to a water-containing coating composition containing lime as a film component, thereby suppressing a pozzolanic reaction when a silicon compound is used in combination. For this reason, the water-containing coating composition of the present invention containing a chelate compound contains a silicon compound such as diatomaceous earth, silica, zeolite, fly ash, sepiolite, and water glass without impairing its fluidity and storage stability. Substances can be blended freely.

I. Non -water-curable water-containing coating composition The non-water-curable water-containing coating composition of the present invention is a water-containing coating composition containing lime as a film component, and the components (a) lime and ( b) In addition to water and (c) a binder, it contains (d) at least one selected from the group consisting of nonpolar amino acids, nonpolar amino acid polymers, and salts thereof. is there.

  Here, “non-water curable” means that the coating composition does not condense and solidify in the presence of water. In other words, it can be stored in a state where it can be used for coating (painting / coating) while containing water. It means that there is. More specifically, the coating material (paint, coating material, sealer) can be used after storage in a water-containing state as it is, or if necessary, with a little stirring and kneading, or by adding a small amount of water and mixing. (Including a surface treatment material), a primer, an adhesive, and the like). In this sense, the water-containing coating composition of the present invention includes a hydraulic substance such as cement and gypsum, and is distinguished from a composition having a property of setting and solidifying in the presence of water.

  Further, the “water-containing coating composition” is a composition that can form a film by being applied / coated or sprayed onto an object, and specifically, a paint, a coating material, a sealer, a primer, An adhesive material etc. can be mentioned without a restriction | limiting. Preferred are paints and coating materials used as finishing materials or cosmetic materials. Among them, it is preferable to use a ceiling or inner / outer wall of a building; a building member such as a cloth, a board or a panel; a textile product such as a curtain, a carpet, a chair-tensioned land, a car seat cover, an insole, or an insole; Furniture such as wall, chest, desk, bookcase and shoe cabinet, water furniture such as sink and washbasin, office equipment such as partition, bookcase and desk, or these parts; tunnel wall, guardrail material, sound insulation wall material, protective wall Examples thereof include paints, coating materials, sealers, primers, or adhesives used for foundations or finishing or coating of materials, civil engineering members such as bridge structures; Although not limited, coating compositions containing lime as a coating component include plaster, dolomite plaster, lime-based finish coating material, lime-based paint, slaked lime / dolomite plaster system thin finish coating material, slaked lime / dolomite plaster thickness. Includes finish finish.

(A) Lime
Specific examples of (a) lime include quick lime whose main component is calcium oxide and slaked lime whose main component is calcium hydroxide. In addition, as these lime, the recycled lime reproduced | regenerated from waste materials, such as industrial lime, salt-baked lime, shellfish ash (shellfish ash), and a construction and civil engineering member, can also be used. These limes may be used alone or in combination of two or more. Preferably, it is a slaked lime which is an air-hard material and is a main raw material for plaster and dolomite plaster. Here, quick lime means lime containing calcium oxide as the main component, and slaked lime means lime containing calcium hydroxide, and as long as other components, calcium carbonate (calcite, aragonite, vaterite) , The presence of precipitated calcium carbonate such as basic calcium carbonate and amorphous calcium carbonate, heavy calcium carbonate) and dolomite (CaMg (CO ₃ ) ₂ ) is not particularly disturbed. The slaked lime may contain quick lime (calcium oxide) as another component, and the quick lime may contain slaked lime (calcium hydroxide) as another component. Therefore, the water-containing coating composition of the present invention is mainly composed of magnesium hydroxide and calcium hydroxide (slaked lime), which is produced by calcination of slaked lime with slaked lime as the main component, calcination of dolomite and the action of water. Includes those containing dolomite plaster tempered with water.

  The proportion of the lime to be blended in the water blended coating composition is not particularly limited, but is appropriately selected from the range of usually 3 to 95 wt% as the blending ratio of lime per 100 wt% solid content of the water blended coating composition. can do. Examples of the lower limit of the lime mixing ratio include 3% by weight, 5% by weight, 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, and 40% by weight. In order to prepare a coating composition that takes advantage of the excellent functions of lime (antifungal, antibacterial, deodorant, humidity control), a certain amount of lime is required. Can be 5% by weight, preferably 10% by weight, more preferably 15% by weight. Moreover, as an upper limit, 80 weight%, 75 weight%, 70 weight%, 65 weight%, or 60 weight% can be mentioned. A more specific blending ratio is not limited, but is 15 to 75% by weight, preferably 20 to 70% by weight, more preferably 25 to 70% by weight, further preferably 30 to 65% by weight, and still more preferably 30 to 65% by weight. 60% by weight can be exemplified.

(B) the ratio of (b) water to be blended in the coating composition of the water present invention is not particularly limited. Preferably, it can be appropriately selected from a range in which water is contained at a ratio of 10 to 90% by weight, preferably 10 to 70% by weight per 100% by weight of the water-containing coating composition. In this case, the water-containing coating composition is prepared so that the solid content is 10 to 90% by weight, preferably 30 to 90% by weight. More specifically, for example, a water-containing coating composition is sprayed, roller or brushed, or in liquid or slurry form (so-called paint form) suitable for industrial coating machines (spray, flow coater, roll coater, vacuum coater, etc.) Although it does not restrict | limit, it can prepare so that water may be contained in the ratio of 30 to 60 weight%, Preferably it is 35 to 50 weight%. Further, when the water-containing coating composition is prepared in a paste form suitable for glazing (so-called coating material form), the ratio is 10 to 40% by weight, preferably 20 to 35% by weight, although not limited. Can be prepared.

(C) Binder The (c) binder used in the present invention is not limited as long as it has the property of enhancing the initial adhesion between limes or increasing the adhesion to the construction surface of the coating composition. Materials (such as funori, glutinous rice, seaweed paste, ginkgo paste, glue, casein, dextrin, thickening polysaccharide, etc.), synthetic paste (celluloses such as methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylmetholcellulose, polyvinyl) Chemical glues such as alcohol), synthetic resins, or inorganic adhesives (sodium silicate, sodium metasilicate, ceramics, etc.) can be arbitrarily used.

  Here, the synthetic resin is preferably a water-soluble or water-dispersible resin, specifically, a styrene / acrylic copolymer such as styrene-acrylic ester, styrene-acrylonitrile and styrene-acrylamide-ethyl acrylate, vinyl acetate-acrylic acid. Vinyl acetate / acrylic copolymers such as esters and vinyl acetate-methacrylic acid esters, butadiene / acrylic copolymers such as butadiene-acrylonitrile, vinyl chloride / acrylic copolymers, vinylidene chloride / acrylic copolymers, Veova / acrylic copolymers Polymer, acrylic copolymer, vinyl chloride / ethylene copolymer, vinyl chloride / vinyl acetate copolymer, vinyl chloride / vinylidene chloride copolymer, vinyl chloride / veova copolymer, vinyl acetate / ethylene copolymer, Vinyl acetate / veova copolymer, vinyl acetate / vinyl Oleic acid ester (eg vinyl acetate / dibutyl fumarate), vinyl acetate / maleic acid ester (eg vinyl acetate / dibutyl maleate); Veova / ethylene, acrylic modified / alkyd resin, acrylic modified / vinyl acetate / vinyl chloride Examples thereof include a vinyl-based synthetic resin such as a copolymer resin, a fluorine-modified acrylic resin, and a silicon-modified acrylic resin, or a polyurethane resin. From the viewpoint of weather resistance, an acrylic resin is preferable. More preferably, at least one of (meth) acrylic acid, (meth) acrylic acid ester, (meth) acrylamides, or (meth) acrylonitrile described in Japanese Patent No. 3094227 is used as a monomer component as an acrylic resin. (See Patent No. 3094227, paragraphs [0015] to [0017]. The description of the patent publication is incorporated as a description of the specification of the present invention). )

  Examples of thickening polysaccharides include gums derived from natural plants or microorganisms such as welan gum, carrageenan, locust bean gum, and tamarind seed gum.

  The ratio of the binder to be blended in the water-blended coating composition of the present invention is not particularly limited. For example, the blend ratio of the binder per 100% by weight of the solid content of the water-blended coating composition is usually 0 in terms of solids. A range of 0.1 to 50% by weight can be mentioned. Preferably it is 0.2 to 40 weight%, More preferably, it is 0.5 to 30 weight%, More preferably, it is 1 to 20 weight%.

(D) Nonpolar Amino Acids The (d) nonpolar amino acid or nonpolar amino acid polymer used in the present invention is not particularly limited as long as it is a nonpolar amino acid or amino acid polymer. The presence or absence and non-polarity of amino acids can generally be evaluated using the hydrophobicity index (Kyte and Doolittle, J. Mol. Biol., 157, 105-132 (1982)). Specifically, if the hydrophobicity index is greater than 0 (that is, a positive value), it can be defined as a nonpolar amino acid, and the greater the hydrophobicity index value, the greater the degree of nonpolarity. Become. The nonpolar amino acid or nonpolar amino acid polymer used in the present invention usually has a hydrophobicity index of 1 or more, and these have a hydrophobicity index in the range of 2-3, 3-4, or 4-5. Things are included. Examples of protein-constituting amino acids having a hydrophobic index (HI) in the range of 1 to 2 include alanine (HI: 1.8) and methionine (HI: 1.9). Examples of protein-constituting amino acids having a hydrophobic index (HI) in the range of 2 to 3 include cysteine (HI: 2.5) and phenylalanine (HI: 2.8). In addition, leucine (HI: 3.8) is used as a protein constituent amino acid having a hydrophobic index (HI) in the range of 3 to 4, and valine (HI: 4.28) is used as a protein constituent amino acid in the range of 4 to 5. And isoleucine (HI: 4.5). However, the amino acids targeted by the present invention are not limited to these protein-constituting amino acids, but also include other amino acids (see, for example, “Biochemical Data Book I”, Tables 2 and 4 (pages 33 to 59), (Published October 1, 1982, Japan Biochemical Society).

  These amino acids can be used in free form or in salt form. Examples of the salt include salts with alkali metals such as potassium and sodium, and salts with alkaline earth metals such as magnesium and calcium. Further, salts with inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid and phosphoric acid; salts with organic acids such as tartaric acid, malic acid, citric acid and ascorbic acid can also be mentioned.

  The nonpolar amino acid polymer targeted by the present invention is an amino acid polymer having nonpolarity as a whole, and two or more different amino acids can be used as long as they are polymers (homopolyamino acids) consisting of the same amino acids. Any of the polymer (heteropolyamino acid) consisting of Preferably, it is a polymer composed of the above-mentioned nonpolar amino acid. For example, a polymer composed of the same nonpolar amino acid such as polyalanine, polymethionine, polycysteine, polyphenylalanine, polyleucine, polyvaline, polyisoleucine can be mentioned. it can. These polymers are not limited, but those having a molecular weight of 50,000 or less, preferably 20,000 or less, more preferably 10,000 or less, particularly preferably 5000 or less, and still more preferably 2000 or less are preferred.

  These nonpolar amino acids, nonpolar amino acid polymers or salts thereof (nonpolar amino acids) can be used singly or in combination of two or more. Furthermore, these nonpolar amino acids can also be used in combination with polar amino acids, their polymers or their salts (polar amino acids). Here, the polar amino acid means one having a hydrophobicity index of less than 0. For example, threonine (HI: -0.7), serine (HI: -0.8), tryptophan (HI: -0.9), tyrosine (HI: -1.3) ), Proline (HI: -1.6), glutamic acid (HI: -3.5), aspartic acid (HI: -3.5), glutamine (HI: -3.5), asparagine (HI: -3.5), histidine (HI: -3.2) , Lysine (HI: -3.9), arginine (HI: -4.5), and other amino acids (for example, Tables 2 and 4 (33- (See page 59).

  The ratio of non-polar amino acids to be blended in the water-blended coating composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and the type of lime contained in the water-blended coating composition and the coating composition Usually 0.001 to 10 wt. Per 100 wt.% Of water-containing coating composition, depending on usage (eg, thin coating or thick coating), coating method, and the type of coating machine or paint used. % Can be suitably selected from the range of%. Preferably it is 0.01 weight% or more, More preferably, it is 0.05 weight% or more. Since these nonpolar amino acids increase their effects as the amount is increased, the upper limit is not particularly limited, but is preferably 8% by weight, more preferably 5% by weight, up to 10% by weight from an economic standpoint. % Can be exemplified.

(E) Chelate compound In addition to the above (a) lime, (b) water, (c) binder and (d) nonpolar amino acids, the coating composition of the present invention contains (e) a chelate compound. be able to.

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

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

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

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

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

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

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

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

  These chelate compounds can be used alone or in combination of two or more.

  The ratio of the chelate compound to be blended in the water-blended coating composition of the present invention is not particularly limited as long as the effects of the present invention are exerted. Depending on the calcium ion sequestering force (trapping force), and in the coating composition Depending on the type of lime contained, the usage of the coating composition (for example, whether it is a thin coating or a thick coating), the coating method, and the type of coating machine or paint used, the water-containing coating composition 100 It can be appropriately selected from the range of usually 0.01 to 5% by weight per weight%. Although not limited, it is preferably 0.02 to 3% by weight, more preferably 0.05 to 2% by weight, still more preferably 0.05 to 1% by weight, and particularly preferably 0.05 to 0.5% by weight. The ratio can be exemplified.

  As described above, the coating composition of the present invention comprises (a) lime, (b) water, (c) a binder and (d) nonpolar amino acids as basic components, and (e) a chelate compound as necessary. However, it can contain other components as long as the effects of the present invention are achieved. Preferred examples of such components include (g) pigments, particularly white pigments, and (h) aggregates.

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

  The mixing ratio of the white pigment is not particularly limited as long as it does not interfere with the effect of the present invention. For example, the blending ratio per 100% by weight of the solid content of the water-containing coating composition is, for example, 0.05 to 40% by weight, preferably 0.25 to 30% by weight, more preferably 0.5 to 25% by weight in terms of solids. % Can be exemplified. In addition, as the blending ratio of the white pigment is increased, the uneven coating can be suppressed, and the coloration and coloring stability when the water-containing coating composition is colored are good, and the color unevenness of the film, fading (color loss) and Although the effect that the color difference can be suppressed tends to increase, the dispersibility and the storage stability of the coating composition can be taken into consideration, and it can usually be adjusted appropriately from the above range.

  Moreover, a color pigment (colored pigment) can be mix | blended as a pigment. Color pigments (colored pigments) are blended in combination with the above white pigments to form a good and uniform color and form a film in which color unevenness (including unevenness in coating), color skip and color difference are significantly suppressed. can do.

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

In the (h) aggregate or the water-containing coating composition of the present invention, (h) an aggregate can be blended for the purpose of imparting design properties to the film. Finishing methods that are formed by spraying with a coating composition that contains aggregates are generally referred to as smooth finishing or sprayed lysine finishing. In this case, if the film is poorly integrated or adherent, the aggregate will peel off. Problem arises. According to the water-containing coating composition of the present invention, viscosity is generated by the blending of nonpolar amino acids, and as a result of improving the integrity of the film and the adhesion of the film, there is a problem when finishing or spraying lysine finishing. Aggregation can be significantly prevented from peeling off.

  (H) Aggregates used in the present invention are not limited, but for example, inorganic aggregates (fine aggregates) such as reclaimed aggregates such as silica sand, cold water sand, perlite, vermiculite, shirasu sphere, and sludge fired aggregate. Others, kaolin, halloysite, montmorillonite, bentonite, gibbsite, mica, ceramic sand, glass beads, pearlite, acid clay, porcelain stone, branstone, feldspar, limestone, gypsum, dolomite, magnesite, talc, tourmaline, diatomaceous earth, zeolite, Natural inorganic materials such as iron powder and fly ash; Water-insoluble metal hydroxides such as barium hydroxide, magnesium hydroxide and natural calcium; Calcium silicate hydrates such as tobermonite and zonotolite; Calcium aluminate hydrate; Hydrate of various oxides such as calcium sulfoaluminate hydrate; Alumina Silica, precipitated silica, magnesia, zinc oxide, spinel, synthetic calcium carbonate, calcium phosphate, magnesium carbonate, and powder, fiber or granular inorganic material such as synthetic minerals such as barium sulfate, potassium titanate.

  Moreover, it can replace with an aggregate and replace with an aggregate and can mix | blend a fiber and fiber powder. Examples of such fibers include natural fibers conventionally used for plaster materials, chemical fibers such as polyethylene and tetron, and wheat fibers. Examples of natural fibers include husa, white hair, nanjing, exposed, oil, and paper.

  The viscosity of the water-containing coating composition of the present invention is not particularly limited as long as it is a viscosity that can be used as a conventional paint or coating material. Although not constrained, if the coating composition is prepared to be suitable for spraying, roller or brushing or painting with an industrial coating machine, it is at least 300 cps at 25 ° C, preferably 300-10,000 cps, more preferably 700-10,000. When the cps is prepared so as to be suitable for glazing, it can be prepared at 2,000 to 30,000 cps, preferably 5,000 to 20,000 cps at 25 ° C. The viscosity of the coating composition can be adjusted by adjusting the solid content (moisture content), adjusting the type of binder and its blending ratio, and adding a thickener as necessary. Good.

  Here, as the thickener, those having good compatibility with water, water solubility or water dispersibility, and compatibility with slaked lime which is the main component of the water-containing coating composition are preferably used. Specifically, hydrophilic polymer compounds can be exemplified.

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

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

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

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

  Preferably, it is a nonionic hydrophilic polymer compound having a hydroxyl group. Preferred examples thereof include cellulose derivatives such as methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose.

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

  The ratio of the various hydrophilic polymer compounds to be blended in the water-blended coating composition is not particularly limited, and is usually 0 in terms of solid (total amount) as a ratio contained per 100% by weight of the solid content of the water-blended coating composition. It can be suitably selected from the range of 0.01 to 5% by weight. Preferably it is 0.03 to 3 weight%, More preferably, it is 0.05 to 2 weight%, More preferably, it is 0.1 to 1 weight%. Although not restricted, the hydrophilic polymer compound is 0.003 to 3% by weight, preferably 0.009 to 2% by weight, more preferably 0.015 to 2% by weight in 100% by weight of the water-containing coating composition. More preferably, it is desirable to adjust the ratio to 0.03 to 1% by weight.

(F) Silicon compound (e) The water-containing coating composition of the present invention containing a chelate compound includes (f) a silicon compound (silicon monoxide, silicon dioxide, silicic acid, silicate (calcium silicate, Sodium silicate, etc.), silicon nitride, silicon carbide, silicon tetrachloride, silane, silicon, silicon resin) or materials containing this as a component (eg, diatomaceous earth, silica, zeolite, sepiolite, fly ash, water glass, etc.) Can be blended. Usually, when soluble silica is blended in calcium hydroxide, a pozzolanic reaction occurs, and an insoluble siliceous compound is generated and cured. Since the coating composition of the present invention contains a chelate compound, the pozzolanic reaction (curing phenomenon) is suppressed even when a silicon compound is added, and the fluidity can be maintained in a water-containing state. In addition, the compounding ratio of these silicon compounds is not particularly limited. For example, in the case of diatomaceous earth, silica, zeolite, sepiolite, fly ash, etc., it can be selected from the range of 0.5 to 90% by weight in 100% by weight of the water-containing coating composition, usually 1 to 60% by weight, The ratio is preferably 5 to 30% by weight, more preferably 5 to 20% by weight. Further, in the case of a concentrated aqueous solution of sodium silicate such as water glass, it can be blended in a proportion of 0.1 to 10% by weight, preferably 0.1 to 5% by weight, in 100% by weight of the water blended coating composition.

  Furthermore, the water-containing coating composition of the present invention includes, as other optional components, extender pigments, oils, photocatalysts, dispersants, wetting agents, water reducing agents, fluidizing agents, antifoams, as long as the effects of the present invention are not hindered. An agent, a pH adjuster, a surfactant, a waterproofing agent and the like can also be blended.

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

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

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

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

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

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

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

  Preparation of the water-containing coating composition of the present invention is basically performed by mixing the above-mentioned components using a conventional method of coating material or paint, for example, a blending device (mixer, shaker, mill, kneader, etc.). Can be implemented. At this time, it can also be appropriately adjusted to a desired viscosity according to the intended use and coating method.

  The thus-prepared water-containing coating composition of the present invention is excellent in fluidity, and can be applied using a spray (air spray, airless spray, low-pressure atomizing spray, etc.) as well as roller coating and brush coating. It can be suitably used for coating using an industrial coating machine (automatic coating machine) such as a flow coater, a roll coater or a vacuum coater. In addition, the water-containing coating composition of the present invention has a strong adhesion to an object (base material) due to its viscosity, and also has a good dispersibility, so that the adhesion strength is uniform and stable (excellent in durability). A coating film (film)) can be formed. Furthermore, since the water-containing coating composition of the present invention has viscosity, it is possible to suppress cracks that occur in the formed coating film (film), particularly in the early stage of drying and cracks caused by forced drying. Thus, since the water-containing coating composition of the present invention can be applied and forcedly dried by an industrial coating machine (automatic coating machine), it can be used for coating on an industrial line, such as a decorative boat or a decorative sheet, It can be suitably used for industrially producing a large number of boats and sheets having a coating layer.

  However, the present invention is not limited to this, and the water-containing coating composition of the present invention is used as a coating material for architectural and civil engineering, a paint, a sealer, a primer, or an adhesive, and as a coating material or an adhesive for a textile product. Further, it can be widely used as a coating material for furniture and office tools, a paint, a sealer, a primer, or an adhesive. Specifically, for example, painting (coating) of interior and exterior surfaces such as ceilings and walls (inner and outer walls) of various buildings; base materials and decorative materials for ceilings and walls (inner and outer walls) of buildings Coating (coating) of various building materials (cloths, panels, boards) used as fabrics; Coating of textile products such as curtains, carpets, chairs, car seat covers, in-sole linings, insoles; joinery and clothes Furnishings such as pots, chests, desks, bookcases and shoe boxes, water-filled furniture such as sinks and washbasins, office equipment such as partitions, bookcases and desks, or painting of these components (coating); tunnel walls, guardrails , Painting of surfaces of road structures such as sound insulation walls and protective walls, and surfaces of bridge structures (coating); and civil engineering such as various wall materials such as tunnel walls, sound insulation walls, protective walls, and various members of bridge structures for Material (panels, boards, pillars) may be used for coating (coating).

II. Coating Composition Package The water-containing coating composition of the present invention is provided in a state of being filled in a water-resistant container after being prepared and housed in the container. Therefore, this invention provides the coating composition package body which accommodates the said water mixing | blending coating composition in a container.

  Here, it is essential that the container used for containing the water-containing coating composition is water resistant. However, due to the liquid property of the coating composition, at least the inner surface that comes into contact with the composition is alkali resistant. It is preferable that it has. For this purpose, a method using an alkali-resistant container, a method of coating an inner surface of a container such as a film or a can with an alkali-resistant resin, a method of employing an alkali-resistant resin film on the inner surface of the container, or the like can be used.

  Moreover, a flexible container can also be used as a container. Examples of the flexible container include a container made of a film or a sheet. Such a container has a carbon dioxide barrier property in order to prevent solidification of slaked lime contained in the water-containing coating composition due to carbon dioxide absorption. It is preferable. As a container having such carbon dioxide barrier property, any container having carbon dioxide permeation resistance may be used so long as the water-containing coating composition contained in the container is not adversely affected (solidified). In general, as a carbon dioxide barrier material, polyvinylidene chloride resin (PVDC), various (poly) vinylidene chloride coated films, ethylene vinyl alcohol film, saponified ethylene-vinyl acetate copolymer (EVOH) coated film, polyester ( Especially PVDC coated polyester), nylon (especially PVDC coated nylon), polyvinyl alcohol, vinylon, vinylidene chloride, cellophane (lacquer coated cellophane, polymer coated cellophane), aluminum foil laminated film, vapor deposited film of inorganic substances such as silicon oxide and aluminum oxide Synthetic resins such as are known. In the present invention, a film having a carbon dioxide barrier property can be arbitrarily selected and used without any particular limitation. In general, when the water-containing coating composition targeted by the present invention is stored in a water-resistant container in an airtight state and stored at room temperature (20 ± 5 ° C.) for at least one month, the internal water-containing coating composition If no curing is observed, it can be determined that the container has a carbon dioxide barrier property.

Suitable containers, without being limited to the above ^materials, can be exemplified those composed of film with a 200g / m 2 / 24hrs / atm (20 ℃, dry) or less of carbon dioxide permeability. Preferably ^{100g / m 2 / 24hrs / atm} (20 ℃, dry) or less, more preferably ^{50g / m 2 / 24hrs / atm} (20 ℃, dry) or less, more preferably ^{20g / m 2 / 24hrs / atm} (20 ° C., dry) or less, more preferably ^{10g / m 2 / 24hrs / atm} (20 ℃, dry) or less (ASTM D1434-58, thickness 25.4μ). Such a container having a carbon dioxide barrier property is a multilayer of two or more layers so as to adjust the thickness of a known gas barrier material, particularly a carbon dioxide permeation barrier material, or to include a laminate layer made of the material. Or it can achieve by preparing as a multilayer film.

  Furthermore, it is preferable that the container further has a water vapor barrier property in order to prevent the solidification due to the evaporation of water from the water-containing coating composition housed therein and to enhance the stability. Such water vapor barrier property may be any water vapor permeation resistance as long as the water-containing coating composition contained in the container is not adversely affected (dried and solidified).

  As the water vapor barrier material, polyvinylidene chloride resin (PVDC), various (poly) vinylidene chloride coated films, moisture-proof cellophane (lacquer coated cellophane, polymer coated cellophane), polyester, PVDC coated polyester, PVDC coated nylon, polyvinyl chloride, Polyethylene (low density, medium density, high density, especially high density polyethylene), linear rhoden polyethylene, stretched polyethylene, unstretched polypropylene, stretched polypropylene, ethylene-vinyl acetate copolymer, ionomer, aluminum foil laminate film, silicon oxide and oxide Synthetic resins such as vapor deposited films of inorganic substances such as aluminum are known. In general, when the water-containing coating composition targeted by the present invention is stored in a water-resistant container in an airtight state and stored at room temperature (20 ± 5 ° C.) for at least one month, the internal water-containing coating composition If dry solidification is not observed, it can be determined that the container has a water vapor barrier property.

Suitable examples of the flexible container include, but are not limited to, the above-described materials, and those made of a film having a water vapor permeability of 40 g / m ² · 24 hrs (37.8 ° C., 90% RH) or less. be able to. The water vapor permeability is preferably 30 g / m ² · 24 hrs (37.8 ° C., 90% RH) or less, more preferably 20 g / m ² · 24 hrs (37.8 ° C., 90% RH) or less, more preferably 10 g. / M ² · 24 hrs (37.8 ° C., 90% RH) or less (ASTM E-96, thickness 25.4 μ). Such a water vapor barrier property is achieved by adjusting the thickness of a known water vapor barrier material or by preparing a film as a multilayer or multilayer film of two or more layers so as to include a laminate layer made of the material. Can do.

  Further, the flexible container may be a single-layer film made of a kind of resin, or may be a multi-layer or multi-layer film having a laminated structure (laminate layer or coat layer) of two or more kinds of resin films. It may be. In addition, it is not questioned whether it is a non-stretched film or a stretched film (uniaxial stretching or biaxial stretching). Preferably, at least one surface is coated with a polyvinyl alcohol (PVA) resin (such as a PVA-coated biaxially stretched polypropylene film), and at least one surface is coated with a polyvinylidene chloride (PVDC) resin (such as a PVDC-coated biaxially stretched polypropylene film) , PVDC coated polyester film, PP / PVA / PVDC / PP, etc.), polyolefin unstretched coextruded multilayer film (PP / PE / PP, polyolefin (PE, PP, etc.) / Polyvinylidene chloride / polyolefin), etc. However, it is not particularly limited to these.

  In the above, an even more optimal container is preferably composed of a film made of a synthetic resin excellent in properties such as strength, impact resistance, pinhole resistance, heat sealability, or alkali resistance. Multilayer or multilayer films may be used to satisfy these different properties. In this case, it is preferable that at least the inner layer of the container has alkali resistance and heat sealability. Examples of the alkali-resistant resin include vinyl chloride, vinyl acetate, and urethane resin. Preferably, a homopolymer of vinyl polymer (for example, those having a weight average molecular weight of 20,000 or more are exemplified) or a copolymer and / or an alkali-resistant urethane resin (for example, having a weight average molecular weight of 100,000 or more is exemplified). In particular, polyvinyl chloride and vinyl chloride-vinyl acetate copolymers can be preferably exemplified. In the present invention, the alkali resistance means that the container film is not visually dissolved or corroded even when the coating composition as the contents is put and left at room temperature for 3 months, preferably 6 months. More preferably, it is desirable to use one that can obtain alkali resistance in the following accelerated test.

<Accelerated test for alkali resistance evaluation>
A 1N aqueous potassium hydroxide solution is placed in a water-resistant container, left in a thermostat at 50 ° C. for 6 hours, and then left at room temperature for 18 days. Then, the aqueous potassium hydroxide solution is taken out and the inner surface of the container is visually dissolved. Evaluate the presence or absence of corrosion.

  In the case of a film, the thickness employed (thickness of the container) is not particularly limited as long as the carbon dioxide barrier property and the water vapor barrier property are satisfied, but preferably 3 to 30 μm, more preferably 5 to 200 μm. is there. If the thickness is less than 2 μm, the strength, impact resistance, pinhole resistance and carbon dioxide permeation barrier properties tend to be insufficient, and if it exceeds 300 μm, flexibility (flexibility) and transparency are insufficient. It is easy to become. More preferably, it is 10-100 micrometers, More preferably, it is 10-80 micrometers.

  Transparency as a film is not particularly required, but since the coating composition accommodated as the content is excellent in weather resistance, it is less affected by light, and it is preferable for the product to be recognized from the outside, so it is transparent. It is desirable to have properties. In this case, transparency means that the contents can be seen visually.

  Furthermore, the flexible container used in the present invention may be easily tearable so that it can be easily opened during use. Conventionally known techniques can be arbitrarily used as the easy tearing technique, for example, formation of V-notch or U-notch, use of tear tape, use of needle-like filler, formation of perforation, or fine scratches on the film surface. The method of attaching etc. can be illustrated. Further, as long as the above properties are satisfied, an easily openable material in which a uniaxially stretched polyolefin film is laminated on the intermediate layer of the film (for example, a three-layer laminate of biaxially stretched polyester film / uniaxially stretched polyolefin film / unstretched polyolefin film) Film etc.) can also be used. Moreover, the container used by this invention may be provided with reclosing means, such as a zipper, in an opening part.

The method of filling and sealing the coating composition in such a flexible container is not particularly limited, but preferably, filling is performed so that air is not mixed as much as possible during filling, and then the filling port is heat sealed (bar seal, hot melt seal, Examples of the sealing method include a hermetic seal (sealing), an impulse seal, a high frequency seal, an ultrasonic seal, and the like. In addition, as a method of filling so that air is not mixed as much as possible, for example, a method of filling under a degassing condition, a vacuum condition or a N ₂ gas replacement condition, or after filling a container with the coating composition, The method of blocking can be illustrated.

  Since lime has high thixotropic flow characteristics, if the aqueous dispersion is left standing for a certain period of time, it aggregates and the fluidity becomes extremely poor. Although this returns to the original fluidity by applying a force such as agitation, it will agglomerate again and become poorer in fluidity when left standing. On the other hand, the water-containing coating composition containing the non-polar amino acid of the present invention, preferably the water-containing coating composition further containing a chelate compound, has high thixotropic flow characteristics inherent to lime by the action of these components. Has the feature that the agglomeration is reduced and aggregation is suppressed. For this reason, the water-containing coating composition filled and accommodated in the above water-resistant containers (including ordinary paint storage containers and flexible containers) is in a uniform state (fluidity) in the form of such a package. , Viscosity) can be kept stable. For this reason, it is possible to simplify the troubles such as re-stirring at the time of use and massaging, which have been essential in the past.

III. Board or sheet and their production method The water-containing coating composition of the present invention can be suitably used for the production of boats and sheets. Therefore, this invention provides the board or sheet | seat which has the coating layer formed from the said water-containing coating composition on the base-material (to-be-coated object) surface.

  Although it does not restrict | limit especially as a base material which this invention makes object, A board | substrate (a panel is included) shape, a film form, and a sheet | seat (a cloth is included) -like base material can be mentioned.

  The board (including panel) -like base material is not particularly limited as long as the water-containing coating composition of the present invention is a plate-like material that can form a film on the surface thereof. The water-containing coating composition of the present invention may form a film directly on the board surface. However, after the board surface is treated with a base treatment agent (sealer) or the like, the film can be formed thereon. Although it does not restrict | limit as a board, For example, the board | substrate material and panel material which are used for the interior for interiors (a wall, a ceiling, etc.) and exterior for construction can be mentioned widely. Specifically, wood board (including solid wood), plywood, medium density fiber board, plastic board, cement mortar, asbestos cement calcium silicate board, hollow cement board, wood cement board, panel cement board, rock wool board, wood Wool cement board, steel plate panel, metal plate panel, concrete board, PC panel, ALC panel, asbestos slate, gypsum board, particle board, foam cement board, wood chip cement board, calcium silicate board, slag cement board, wood plastic combination And siding boards, insulation boards, volcanic glassy multilayer boards and the like. Preferably, gypsum board, gypsum particle board, wood board, medium density fiber board, calcium silicate board, plastic board, stainless steel, iron, copper or aluminum metal panel (metal panel), siding board (metal system, ceramic industry) System)).

  The surface of the board-shaped substrate (the surface on which the film is formed) may be pretreated in advance, such as a base treatment such as painting or coating treatment, or a sheet attached. Further, when the board is made of a flammable material such as wood, it may be subjected to a flame-retardant treatment (semi-incombustible treatment, non-flammable treatment or fireproof treatment) in advance.

  The sheet (including cloth) -like substrate may be a sheet-like material that can be applied to the surface thereof with the water-containing coating composition of the present invention, and is not particularly limited as long as it is. Similarly to the board, after the surface of the sheet is treated with a base treatment agent (sealer) or the like, a film can be formed thereon.

  For example, as the sheet-like substrate, there can be mentioned fibrous sheets such as paper, various natural fibers, and nonwoven fabrics or woven fabrics made of artificial fibers. Specifically, the paper includes Japanese paper, shoji paper, paper, western paper (high quality paper, medium quality paper), kraft paper, thin paper, backing paper, resin impregnated paper, cardboard, cardboard, cast coated paper, dust generation Dust-free paper with reduced moisture, functional paper containing inorganic powder (porous powder such as aluminum hydroxide, calcium carbonate, activated carbon, heat-resistant powder), and special paper (water-resistant paper, antibacterial paper, fluorescent paper) Any of various paper base materials such as flame-retardant backing paper, semi-incombustible paper, non-combustible paper, and heat-resistant paper). For example, the flame-retardant backing paper is a paper that has been flame-retardant treated by laminating metal foil (for example, aluminum foil or copper foil), and is suitable for wallpaper and decorative finishing of boards and panels. Are included. Such a flame-retardant backing paper can be suitably used for a decorative finish of a combustible wood board.

  Examples of the fibrous sheet include natural fibers; glass fibers; or porous woven fabrics, nonwoven fabrics, knitted fabrics, and the like obtained by using synthetic fibers such as polypropylene, acrylic, nylon, polyester, polyethylene terephthalate, polyamide, and vinylon. Can be mentioned. In addition, the said raw material can be used individually by 1 type, or can also be used in combination of 2 or more types arbitrarily. In addition, PT cellophane, MST cellophane, K cellophane, LDPE, MDPE, HDPE, ionomer, EVA, CPP, OPP, KOP, PET, KPET, CN, ON, K nylon, vinylon, ethylene acetate vinyl copolymer saponified product, PDVC, Sheet base materials other than paper such as cured PVC, softened PVC, acetate, polycarbonate, HIPS, OPS, polybutadiene, shrink PVC, shrink PP, shrink PE, foam PE, and foam PS; made of metal such as stainless steel, iron, copper or aluminum Can be mentioned. The sheet may be a mesh sheet.

  The sheet targeted by the present invention is manufactured using the above sheet-like base material, for example, a sheet (for example, an interior for buildings (interior walls, ceilings, etc.) or an interior building material (for example, interior panels)). Wallpapers, etc .; Joinery (eg, board doors, lattice doors, shoji screens, fences, bamma, flash doors, piers, coffin doors, etc.), furniture (eg clothes holders, chests, desks, bookcases and shoe racks), around water Furniture (for example, sinks and washstands), as well as office equipment (for example, partitions, bookcases, desks, etc.) and sheets used for decorative finishing of those components; sheets used as lighting covers; curtains, carpets, Textile products such as chair upholstery, car seat covers, in-shoe paste, and insoles are included.

  The boat or sheet of the present invention is obtained by applying and coating the above-described water-containing coating composition of the present invention on the surface of the board or sheet-like substrate (which may be pretreated) and drying. Can be manufactured by. The method of application / coating is not particularly limited, and includes roller coating, brush coating, trowel coating, coating using a spray or gun (air spray, airless spray, low-pressure atomizing spray, etc.), flow coater, roll Any of coatings using an industrial coating machine (automatic coating machine) such as a coater, knife coater, vacuum coater, etc. may be used. For the purpose of industrially producing a large number of boats or sheets, a coating method using the industrial coating machine (automatic coating machine) can be suitably used.

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

  Any of a natural drying method, a ventilation drying method, a forced drying method or a heat drying method can be used for drying the water-containing coating composition coated on the surface of the article (base material). At this time, the lime contained in the water-containing coating composition is bonded and cured by itself, and when the coating composition contains a binder, the lime is bonded and cured together with the binder and adheres to the surface of the substrate to form a coating layer. The water-containing coating composition of the present invention has excellent dispersibility due to the addition of nonpolar amino acids, and the adhesion to the object to be coated is enhanced by the viscosity. A coating layer that adheres uniformly and firmly to the whole can be formed.

  In addition, the formed coating layer can be finished by applying a design with a concavo-convex pattern roller or a trowel before drying, or by polishing with a file or various polishing machines after drying, if necessary.

  The board or sheet of the present invention may be one in which the surface of the coating layer formed from the water-containing coating composition is further subjected to antifouling treatment, or is laminated with a protective sheet or film. There may be. In particular, when a decorative boat or sheet is manufactured in a factory, fouling, scratches and cracks in the coating layer (decorative layer) that may occur during subsequent transportation, secondary processing, or construction will significantly reduce the commercial value. . The protective sheet or film is laminated on the surface of the coating layer in order to protect the coating layer (decorative layer) from such fouling, scratches and cracks during transportation, secondary processing, or construction, After the construction, it can be easily removed without damaging the coating layer (decorative layer) surface with an appropriate force. The antifouling treatment is intended to make the surface of the coating layer difficult to get dirty, and to make it easy to remove even if it is dirty.

  The material of the protective sheet or film is not particularly limited as long as it is suitable for this purpose, and the breathability and the non-breathability are not particularly limited. In general, a film having a thickness of less than 0.25 mm is referred to as a film, and a sheet having a thickness of 0.25 mm or more is referred to as a sheet.

  The protective sheet or film (hereinafter referred to as “protective sheet or the like”) is preferably one that can be laminated on the surface of the coating layer formed from the coating composition by a laminating technique. For example, on one side of a film or sheet-like substrate made of paper, cellophane, aluminum foil, or synthetic resin (eg, polyethylene, polypropylene, nylon, ethylene / vinyl acetate copolymer, polyester, vinylon, polyethylene terephthalate, etc.) Examples thereof include those obtained by laminating a resin such as a heat-sensitive adhesive or a pressure-sensitive adhesive. The resin used as the adhesive is not limited, but ionomer resin, ethylene / methacrylic acid copolymer resin, ethylene / ethyl acrylate copolymer resin, low density polyethylene resin, ethylene / vinyl acetate copolymer resin Etc. can be illustrated.

  In addition, the antifouling treatment is a coating material having a function of preventing the surface of the coating layer formed from the water-containing coating composition from being contaminated with substances that cause dirt (for example, soy sauce, coffee, spear, water pen, etc.). It can be done by coating with. Examples of such a coating material include a silicon coating material containing a silicon resin and a fluorine coating material containing a fluororesin. Such a coating material may contain a photocatalyst such as titanium oxide or a matte material.

IV. Method for improving flowability of water-containing coating composition As described above, in a water-containing coating composition containing lime as a film component, dispersibility of lime in water is improved by using nonpolar amino acids, and water is added. The fluidity of the blended coating composition itself is improved. For this reason, this invention provides the method of improving fluidity | liquidity about the water-containing coating composition containing a lime as a film | membrane component.

  In this method, as a water-containing coating composition used for film formation, in addition to (a) lime, (b) water and (c) a binder, a composition containing (d) the nonpolar amino acids described above is used. It is characterized by that.

  (A) The type and amount of lime used in the preparation of the coating composition here, (d) The type and amount of nonpolar amino acids, (b) The amount of water, and (c) The type of binder The blending amount is as described in the above section I, and this can be used.

  Such a water-containing coating composition has (a) lime, (b) water, (c) a binder, and (d) nonpolar amino acids as basic components, but the effect of the present invention (adhesion improvement) (E) Chelate compounds can be blended, and other components can be blended, as long as they do not interfere with (stabilization of uniform adhesion force). As such other components, a binder can be preferably used, and a thickener can be blended as necessary. If necessary, white pigments, colored pigments (colored pigments), extender pigments, fibers such as oil and soot, photocatalysts, dispersants, wetting agents, antifoaming agents, aggregates, pH adjusters, surfactants, water reducing agents Materials, fluidizing agents, waterproofing agents and the like can also be blended. The types, blending amounts, blending methods, and the like of these components are as described in the above section I, and this description can also be used here.

  According to the method of the present invention, it is possible to prepare a water-containing coating composition having excellent fluidity and an appropriate viscosity. For this reason, the water-containing coating composition to which the method of the present invention is applied is excellent in fluidity and has an appropriate viscosity, so that it is suitably applied to a flow coater that applies a coating by flowing in a curtain from a narrow slit. be able to. That is, according to the water-containing coating composition prepared by the method of the present invention, boards and sheets having this coating layer can be produced industrially in large quantities using an industrial coating machine such as a flow coater. .

  In addition, the to-be-coated object which apply | coats and coats the water-containing coating composition obtained by the said method is not restrict | limited in particular.

  For example, the object to be coated is not limited, but preferably various building materials used as a base material or decorative material for the ceiling or wall (inner / outer wall) of a building; joinery, furniture (water furniture) And materials used for office equipment, etc .; materials used for textile products such as curtains, carpets, chair tension BR> n, car seat covers, shoe linings, insoles; or tunnel wall materials, guardrails Examples thereof include board materials (panel materials) or sheet materials such as various civil engineering members used as materials, sound insulation wall materials, protective wall materials, and bridge structures.

  As described above, as a method of applying the coating composition to these objects (building members, joinery, furniture and office tool members, textile products, civil engineering members), a flow coater, a roll coater, a knife coater, Industrial coating machines (automatic coating machines) such as vacuum coaters can be cited as preferred examples, but are not limited to these, including roller coating, brush coating and iron coating, sprays and guns (air spray, airless spray, low A coating method using an atmospheric atomizing spray or the like can be widely used.

V. Method for Improving Adhesion of Water-Containing Coating Composition or Uniform Stabilization of Adhesion As described above, dispersibility is improved by using nonpolar amino acids in a water-containing coating composition containing lime as a film component. At the same time, viscosity is generated and adhesion to the object is enhanced. For this reason, this invention provides the method of improving the adhesive force about the water-containing coating composition containing a lime as a film | membrane component, and the method of stabilizing uniformly the adhesive force with respect to a to-be-coated object.

  In this method, as a water-containing coating composition used for film formation, in addition to (a) lime, (b) water and (c) a binder, a composition containing (d) the nonpolar amino acids described above is used. It is characterized by that.

  Here, (a) the type and amount of lime used in the preparation of the coating composition, (d) the type and amount of polar amino acids, (b) the amount of water, and (c) the type of binder and The blending amount is as described in the above section I, and this can be used.

  Such a water-containing coating composition has (a) lime, (b) water, (c) a binder, and (d) nonpolar amino acids as basic components, but the effect of the present invention (adhesion improvement) (E) Chelate compounds can be blended, and other components can be blended, as long as they do not interfere with (stabilization of uniform adhesion force). Such other components include thickeners, and if necessary, white pigments, colored pigments (colored pigments), extenders, fibers such as oil, soot, photocatalysts, dispersants, wetting agents, antifoaming agents, aggregates. , PH adjusters, surfactants, water reducing agents, fluidizing agents, waterproofing agents, and the like can also be blended. The types, blending amounts, blending methods, and the like of these components are as described in the above section I, and this description can also be used here.

  By using such a water-containing coating composition for film formation, it is possible to form a lime-containing film having excellent adhesion strength, in other words, excellent durability. Further, since this water-containing coating composition is excellent in dispersibility, it is possible to form a film having a uniform and stable adhesion strength to the surface of the object to be coated.

  The construction method and the object to be coated / coated with the water-containing coating composition are not particularly limited.

  For example, the object to be coated is not limited, but preferably various building materials used as a base material or a decorative material for the ceiling or wall (inner / outer wall) of a building; furniture (including furniture around water) Materials used for fabrics and office equipment; materials used for textile products such as curtains, carpets, chair stretches, car seat covers, shoe-in-places, insoles, etc .; or tunnel wall materials, guardrail materials, sound insulation wall materials And board materials (panel materials) or sheet materials such as various civil engineering members used as protective wall materials and bridge structures.

  As described above, the coating composition is applied to these objects (building materials, furniture and office equipment members, textile products, civil engineering members) by roller coating, brush coating, iron coating, and spraying. Such as painting using paint and guns (air spray, airless spray, low-pressure atomizing spray, etc.) and painting using industrial coating machines (automatic coating machines) such as flow coaters, roll coaters, knife coaters, vacuum coaters, etc. The conventional method can be mentioned.

VI. Method for improving crack resistance of coating composition As described above, in a water-containing coating composition containing lime as a coating component, viscosity is generated by using nonpolar amino acids, and the coating coating is resistant to cracking. And can prevent cracking during drying significantly. For this reason, the present invention provides a method for forming a crack-resistant lime-containing film, in other words, a method for suppressing cracks in a film containing lime.

  This method uses a composition containing (d) nonpolar amino acids in addition to (a) lime, (b) water and (c) a binder as a water-containing coating composition used for film formation. Features. More preferably, (e) a chelate compound is used in combination.

  (A) The type and amount of lime used in the preparation of the water-containing coating composition, (d) nonpolar amino acids, (b) the amount of water, (c) the type and amount of binder, In addition, the type and blending amount of the (e) chelate compound are as described in the above section I, and this can be used.

  As described above, such a water-containing coating composition comprises (a) lime, (d) nonpolar amino acids, (b) water and (c) a binder as basic components, and (e) a chelate as necessary. Although it contains a compound, it can contain other components as long as it does not prevent cracking of the coating. Such components include thickeners, and if necessary, white pigments, colored pigments (colored pigments), extender fibers, oils, fibers such as soot, photocatalysts, dispersants, wetting agents, antifoaming agents, aggregates, A pH adjuster, a surfactant, a water reducing material, a fluidizing agent, a waterproofing agent and the like can also be blended. The types, blending amounts, blending methods, and the like of these components are as described in the above section I, and this description can also be used here.

  By using such a coating composition for film formation, it is possible to form a lime-containing film that is resistant to cracking, and particularly difficult to crack even by forced drying using heating or ventilation. The construction method and the object to be coated / coated with the coating composition (the object to be coated) are not particularly limited, and any of those described above can be used.

  In addition, the coating composition can be finished by applying a design with a roller with a concavo-convex pattern or a trowel before drying the surface of the coating layer formed as necessary, or by polishing with a file or various polishing machines after drying. . Moreover, after coating the surface of a membrane | film | coat layer with a roller with a concavo-convex pattern, a trowel, etc., the coating composition can also apply | coat thinly again from on it. A coating (painted product) having a film formed from the coating composition can be prepared by simple construction without requiring advanced techniques because the film has crack resistance. Moreover, since the film formed from the coating composition has crack resistance regardless of the thickness (irregularity), various textures (designs) can be applied to the film.

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

Experimental example 1
The components listed in Table 1 were placed in a coating material blending mixer and stirred to disperse the solid content in water, thereby preparing water-containing coating compositions (Reference Examples 1 to 8, Reference Comparative Examples 1 and 2). . Nonpolar amino acids include alanine (Reference Examples 1 and 8), methionine (Reference Example 2), cysteine hydrochloride (Reference Example 3), phenylalanine (Reference Example 4), leucine amide hydrochloride (Reference Example 5), and valine. (Reference Example 6) and isoleucine (Reference Example 7) were used. Further, sodium gluconate (Reference Example 8, Reference Comparative Example 2) was used as a chelate compound.

  After crushing this with an 80-mesh filter, place it in a container with a slit (width 0.6mm, length 60cm) created by imitating the paint outlet of a flow coater, which is an automatic coating machine, with the slit side down. Each water-blended coating composition was allowed to flow out from the slit in the form of a curtain, and the presence / absence of the fluid curtain was evaluated. The results are shown in Table 1. In addition, the presence or absence of curtain breakage was evaluated according to the following criteria.

<Evaluation>
◯: The fluid flowed out without interruption throughout the entire length of the slit.
(Triangle | delta): Although the fluid flowed out over the full length of the slit at the beginning, the curtain was cut off on the way and it flowed out to the end in that state.
X: The curtain was cut shortly after the outflow, and the fluid flowed out as it was biased to a part of the slit.

表１からわかるように、非極性アミノ酸類を配合しない石灰を含む水配合コーティング組成物（参考比較例１、２）は、スリットからの流出性が悪く、途中でカーテン切れした。これに対して、非極性アミノ酸類を配合した水配合コーティング組成物（参考例１〜８）は殆どカーテン切れせず、最後まで良好にスリットから流出した。この理由として、石灰を含む水配合コーティング組成物に非極性アミノ酸類を配合することによって石灰の流動性が向上しただけでなく、水配合コーティング組成物に適度な粘性が生じ、流体間の連結性が上がったためと考えられる。なお、表１に記載する各組成において、石灰を３０重量％から４０重量％に増やし、各種アミノ酸を０．１重量％から０．０５重量％に減らした場合も同様の結果が得られた。

As can be seen from Table 1, the water-containing coating compositions containing lime not containing non-polar amino acids (Reference Comparative Examples 1 and 2) had poor outflow from the slit, and the curtain was cut off in the middle. On the other hand, the water-containing coating compositions (Reference Examples 1 to 8) containing nonpolar amino acids almost did not run out of curtains, and flowed out of the slits well to the end. This is because not only the flowability of lime is improved by adding non-polar amino acids to the water-containing coating composition containing lime, but also the water-containing coating composition has an appropriate viscosity, and connectivity between fluids. This is thought to be due to a rise. In addition, in each composition described in Table 1, the same result was obtained when lime was increased from 30 wt% to 40 wt% and various amino acids were reduced from 0.1 wt% to 0.05 wt%.

  Further, in addition to the components of each of the water-containing coating compositions of Reference Examples 1 to 8 and Reference Comparative Examples 1 and 2, polyvinyl alcohol is added as a binder at a ratio of a final concentration of 20% by weight, and water-containing coating Compositions (Examples 1 to 8 and Comparative Examples 1 to 2) were prepared, and fluidity (presence / absence of curtain breakage) was evaluated according to the above method. The results are shown in Table 2.

表２からわかるように、水配合コーティング組成物流動性に結合材の影響はなく、上記参考例１〜８および参考比較例１〜２と同様の結果が得られた。なお、表２に記載する各組成において、石灰を３０重量％から４０重量％に増やし、各種アミノ酸を０．１重量％から０．０５重量％に減らし、且つ結合材を５重量％に減らした場合も同様の結果が得られた。また表２に記載する各組成において、結合材としてポリビニルアルコールに代えて、アクリル系合成樹脂エマルション（固形含量４０重量％）を用いた場合も同様の結果が得られた。

As can be seen from Table 2, there was no influence of the binder on the fluidity of the water-containing coating composition, and the same results as in Reference Examples 1-8 and Reference Comparative Examples 1-2 were obtained. In each composition shown in Table 2, lime was increased from 30% by weight to 40% by weight, various amino acids were reduced from 0.1% by weight to 0.05% by weight, and the binder was reduced to 5% by weight. Similar results were obtained in this case. Moreover, in each composition described in Table 2, the same result was obtained when an acrylic synthetic resin emulsion (solid content: 40% by weight) was used as the binder instead of polyvinyl alcohol.

  From these results, blending non-polar amino acids with a water-blended coating composition containing lime and a binder, which is suitable for automatic coating machines such as a flow coater, has good flowability and significantly suppressed curtain breakage. It has been found that a coating composition can be prepared.

Experimental example 2
Various water-containing coating compositions (Example 9, Comparative Examples 3 and 4) described in Table 3 were prepared using alanine as the nonpolar amino acid and sodium gluconate as the chelate compound. This is applied to a substrate (100cm x 100cm) that has been pretreated with a sealer, dried for 10 days, and the formed coating (coating thickness: 0.2mm) is applied to JIS A6909 (finishing coating material for construction). A coating film adhesion test (dry adhesion, adhesion after water immersion) was conducted according to the following method.

<Dry adhesion test>
(1) At the four arbitrarily selected locations (No.1, No.2, No.3, No.4) of the coating surface formed on the surface of the substrate (100cm x 100cm) using each coating composition The steel attachment is affixed with a fast-curing epoxy resin adhesive and cured.
(2) After the adhesive is cured, cut the periphery of the attachment with a cutter knife, and cut off the peripheral coating film and the test location.
(3) Insert the adhesive tester, read the maximum load at break under a load, in terms of the bond strength per ^{1mm 2 (N / mm 2)} .
(4) Observe the fracture surface and evaluate at which part it fractured.

<Adhesion test after water immersion>
(1) Curing the parts other than the paint film surface (the back and sides of the paint film surface) of the substrate (100cm x 100cm) whose surface is coated with each water-containing coating composition with the waterproof tape, with the paint film face down Immerse in water (room temperature) for 10 days.
(2) After immersion, after drying at 50 ° C. for 24 hours and standing at room temperature (20 ° C.), the above-mentioned dry adhesion test (1) to (4) was conducted in the same manner.

  The results are shown in Table 3.

表３に示すように、乾燥付着力の結果から、石灰および結合材を含む水配合コーティング組成物にキレート化合物（グルコン酸ナトリウム）を配合することによって塗膜の付着強度が増加したが（比較例３）、さらにこれに非極性アミノ酸（アラニン）を配合することによって一層塗膜の付着強度が増加した（実施例９）。なお、キレート化合物も非極性アミノ酸も配合しない比較例４の塗膜は、塗膜内部が破断したのに対して、非極性アミノ酸を配合した実施例９の塗膜は、塗膜内部の破断は認められず、基板／シーラー界面で破断していたことから、非極性アミノ酸を配合することにより、塗膜を構成する石灰同士の付着力（結合力）が増強するとともに、基板に対する塗膜の付着力も増強していることが確認された。

As shown in Table 3, the adhesion strength of the coating film was increased by adding a chelate compound (sodium gluconate) to a water-containing coating composition containing lime and a binder from the results of dry adhesion (Comparative Example) 3) Further, by adding a nonpolar amino acid (alanine) to this, the adhesion strength of the coating film was further increased (Example 9). The coating film of Comparative Example 4 in which neither a chelate compound nor a nonpolar amino acid was blended was broken inside the coating film, whereas the coating film of Example 9 blended with a nonpolar amino acid was not broken inside the coating film. Since it was not recognized and it was broken at the substrate / sealer interface, the addition of a non-polar amino acid enhanced the adhesion (bonding force) between the limes constituting the coating film, and attached the coating film to the substrate. It was confirmed that the wearing power was also enhanced.

  Moreover, the coating film of Example 9 which mix | blended the nonpolar amino acid did not have the difference between test samples (No.1-4), and the same value was obtained in the result of the adhesive force after drying and the result of the adhesive force after water immersion. It was. From this, it can be seen that by adding a non-polar amino acid to a water-containing coating composition containing lime and a binder, an increase in adhesion strength can be obtained uniformly over the entire surface of the coating film. Although this reason is not certain, it is thought that the dispersibility of the water-containing coating composition is improved by the addition of the nonpolar amino acid.

Experimental example 3
For Example 9 prepared in Experimental Example 2, an adhesion test (cross cut test) was performed according to the method specified in JIS K5400-8.5 (JIS D0202) (number of specimens: 5). Specifically, first, the surface of the substrate (about 60 mm × 70 mm) was applied with the water-containing coating composition of Example 9 and dried for 10 days. Next, in the formed coating film (coating thickness: 0.15 mm, coating area: about 30 mm x 30 mm), cuts that reach the substrate substrate are placed at 2 mm intervals so as to form a grid (11 x 11), A cellophane adhesive tape was affixed to the surface so as to adhere to about 50 mm, and the tape was adhered to the coating film by rubbing with an eraser. One minute after the tape was attached, the tape was held at a right angle to the surface of the coating film and peeled off instantaneously, and the degree of peeling of the coating film was evaluated in accordance with the JIS standard. As a result, there was no or only slight peeling of the coating film in all five samples (evaluation: 8 to 10 points), and the water-containing coating composition of the present invention was excellent in coating film adhesion, It was confirmed that the adhesion was uniform.

Experimental Example 4
The ingredients listed in Table 4 were placed in a mixer for preparing a coating material and stirred to disperse the solid content in water, thereby preparing water-containing coating compositions (Examples 10 to 23 and Comparative Examples 5 to 6). About each of these water-containing coating compositions, the crack resistance of the film was evaluated by the following method.

(1) Crack resistance of film (presence of cracks due to forced drying)
Each of the above water-containing coating compositions was applied to a test plate (flexible plate) with unevenness with a thickness of 1 to 10 mm, and then forcedly dried by applying hot air from a dryer. About the formed dry film, the presence or absence of a crack was visually observed and evaluated according to the following criteria.

<Evaluation criteria>
◎: No cracks are observed at all. ○: Some cracks are observed at the places with uneven undulations, but no cracks are observed at most places including the flat part. △: Cracks are also observed at the flat part. Cracks are observed throughout.

(2) Crack resistance of the film (presence of cracks caused by bending)
Each of the above water-containing coating compositions was applied on a thick vinyl sheet using a roller to a thickness of about 0.2 mm, and then naturally dried over the whole day. The sheet having the coating layer thus obtained was subjected to the following test, and the crack resistance due to bending was evaluated according to the following criteria.

<Test method>
(2-1) Bend the sheet at 180 degrees, and visually observe whether the folds are cracked when opened.
(2-2) For the cracked sheet, bend the different part of this sheet 90 degrees again, and visually observe whether it cracks when opened.
(2-3) For a sheet that has not been cracked, repeat the opening process by bending it 90 degrees and evaluate how many times the crack occurs.

<Evaluation criteria>
◯: No cracks were observed even when bent 180 degrees, or cracks were observed when bent 180 degrees, but almost no cracks were observed even when the operation of bending 90 degrees was performed three times.
Δ: Cracking is not recognized even if the operation of bending and opening 90 degrees is performed once, but cracking is recognized if this operation is performed three times.
X: Cracking occurred when the bending and opening operation was performed once.

  The test results of (1) and (2) are also shown in Table 4.

表４に示すように、石灰と結合材を含む水配合コーティング組成物に非極性アミノ酸を配合することによって、強制乾燥によっても、また折れ曲げによっても、ひび割れしにくい特性、すなわち耐ひび割れ性を付与することができた（実施例１０〜２３）。このことから、非極性アミノ酸を用いることによって石灰および結合材を含む皮膜の基材への付着性を高めるとともに、当該皮膜に微弾性を付与することができることがわかった。また、非極性アミノ酸にキレート化合物を併用することによってこの耐ひび割れ性はより向上することがわかった（実施例１７〜２３）。なお、表４に記載する各組成において、石灰を３０重量％から４０重量％に増やした場合も同様の結果が得られた。

As shown in Table 4, by adding a non-polar amino acid to a water-containing coating composition containing lime and a binder, it imparts a property that is difficult to crack, both by forced drying and by bending, ie, crack resistance. (Examples 10 to 23). From this, it was found that by using a non-polar amino acid, the adhesion of the film containing lime and the binder to the base material can be enhanced and the film can be given microelasticity. Moreover, it turned out that this crack resistance improves more by using a chelate compound together with a nonpolar amino acid (Examples 17-23). In addition, in each composition described in Table 4, the same result was obtained when lime was increased from 30% by weight to 40% by weight.

Experimental Example 5
The ingredients listed in Table 6 were placed in a coating material blending mixer and stirred to disperse the solid content in water to prepare a water blending coating composition (Examples 24-32). The crack resistance was evaluated. In addition, the compound described in Table 5 was used as a chelate compound.

結果を表６に示す。

The results are shown in Table 6.

実験例４と同様に、非極性アミノ酸とキレート化合物を併用することによって、石灰と結合材を含むコーティング組成物の耐ひび割れ性をより向上させることができることが確認された。なお、表６に記載する各組成において、石灰を３０重量％から３５重量％に、体質顔料を８重量％から２７重量％に増やした場合も同様の結果が得られた。

As in Experimental Example 4, it was confirmed that the crack resistance of the coating composition containing lime and a binder can be further improved by using a nonpolar amino acid and a chelate compound in combination. In each composition shown in Table 6, the same results were obtained when lime was increased from 30% to 35% by weight and extender pigment was increased from 8% to 27% by weight.

Experimental Example 6
The solid component of Table 7 was disperse | distributed to water, and the water mixing | blending coating composition (Examples 33-36, comparative example 7) containing a lime and a binder was prepared.

  Specifically, each component shown in Table 7 was placed in a mixer for preparing a coating material and stirred to disperse the solid content in water, and a water-containing coating composition containing lime and a binder (Examples 33 to 36). ) Was prepared. For comparison, a coating composition (Comparative Example 7) was similarly prepared except that the nonpolar amino acid and the chelate compound were not blended in the formulation of Example 35.

Next, 500 g of each of the water-containing coating compositions prepared was water-resistant film back [Saran-UB # 158: Asahi Kasei Co., Ltd .: thickness 15 μm (ASTM D-3985), oxygen permeability 10 ml / (m ² · day · MPa) (20 ° C., 75% RH) (ASTM D-3985), moisture permeability 1 g / (m ² · day) (38 ° C., 90% RH) (ASTM F-372)] Heat-sealed while deaerated to the state. The appearance and properties (including the softness and fluidity of the coating material) were evaluated immediately after preparation and after standing at room temperature (20 ± 5 ° C.) for 48 hours. The results are shown in Table 7.

比較例７のコーティング組成物は、調製時にすでに内容物の凝集が認められ、４８時間経過後にはその凝集物が硬化して全体として非常に硬い組成物となっていた（×：不良）。これは珪藻土の珪素化合物と消石灰のカルシウムイオンとが反応して、ポゾラン（シリカ質化合物）が生じたためと考えられた。一方、実施例３３〜３６のコーティング組成物はいずれも珪素化合物を含んでいるにも拘わらず凝集や硬化といった不都合な現象（ポゾラン）は認められず、調製直後も４８時間経過後も柔らかで調製時の流動性を備えていた（○〜◎：良好）。このことから、消石灰を含むコーティング組成物中に非極性アミノ酸とキレート化合物を配合することで、珪素化合物と反応してポゾランを生じることをも防止できることがわかった。斯くして本発明の技術によれば、水配合コーティング組成物の皮膜成分として、消石灰に加えてゼオライトや珪藻土を使用することが可能となり、その結果、消石灰の調湿性を補強することができる。また、水配合コーティング組成物の結合材として、合成樹脂エマルションやポリビニルアルコールなどの有機化合物に代えて、無機接着剤である水ガラス（Na₂O・2SiO₂／45％水溶液）を使用することが可能となり、その結果、無機１００％のコーティング組成物を調製することができる。

In the coating composition of Comparative Example 7, aggregation of the contents was already observed at the time of preparation, and after 48 hours, the aggregate was cured to become a very hard composition as a whole (x: poor). This was thought to be due to the reaction of the silicon compound of diatomaceous earth with calcium ions of slaked lime to produce pozzolans (siliceous compounds). On the other hand, although the coating compositions of Examples 33 to 36 all contain a silicon compound, no adverse phenomenon (pozzolana) such as aggregation or curing was observed, and the coating compositions were soft immediately after preparation and after 48 hours. The fluidity of the time was provided (○ to ◎: good). From this, it was found that by adding a nonpolar amino acid and a chelate compound to the coating composition containing slaked lime, it is possible to prevent the formation of pozzolans by reacting with the silicon compound. Thus, according to the technique of the present invention, it is possible to use zeolite or diatomaceous earth in addition to slaked lime as a film component of the water-containing coating composition, and as a result, the humidity control property of slaked lime can be reinforced. In addition, water glass (Na ₂ O · 2SiO ₂ /45% aqueous solution), which is an inorganic adhesive, may be used as a binder for the water-containing coating composition instead of organic compounds such as synthetic resin emulsions and polyvinyl alcohol. As a result, a 100% inorganic coating composition can be prepared.

Claims (10)

(A) lime, (b) water, (c) binder, and (d) at least one member selected from the group consisting of non-polar amino acids AND ITS salt coating composition comprising a.   The coating composition according to claim 1, further comprising (e) a chelate compound.   A board or sheet having a coating layer formed from the coating composition according to claim 1 or 2 on a substrate surface.   The manufacturing method of the board or sheet | seat of Claim 3 which has the process of apply | coating the coating composition of Claim 1 or 2 to the base-material surface. Characterized by blending at least one selected (d) and contact a nonpolar amino acid from the group consisting of a salt thereof, (a) lime, coating composition containing (b) water and (c) binder Method for improving fluidity of materials.   Furthermore, (e) chelate compound is mix | blended, The fluidity improvement method of Claim 5 characterized by the above-mentioned. Characterized by blending at least one selected (d) and contact a nonpolar amino acid from the group consisting of a salt thereof, (a) lime, coating composition containing (b) water and (c) binder A method to improve the crack resistance of objects.   Furthermore, (e) chelate compound is mix | blended, The crack-proof improvement method of Claim 7 characterized by the above-mentioned. Characterized by blending at least one selected (d) and contact a nonpolar amino acid from the group consisting of a salt thereof, (a) lime, coating composition containing (b) water and (c) binder A method for improving the adhesion of materials to a substrate or uniform stabilizing the adhesion.   Furthermore, (e) chelate compound is mix | blended, The adhesive force improvement or the uniform stabilization method of adhesive force of Claim 9 characterized by the above-mentioned.