JP6530842B1 - Coating material composition and method for producing colored cement-based cosmetic material - Google Patents

Abstract

An object of the present invention is to color a cement-based substrate while maintaining the appearance of the decorative member among the cosmetic surfaces by applying the cement-based substrate and the cosmetic member in the cement-based cosmetic material to the exposed cosmetic surface. Provided is a coating material composition capable of suppressing color unevenness. The coating material composition is used for a cement-based decorative material 110 having a decorative surface in which a cement-based substrate 12 and a decorative member are exposed, and the cement-based substrate in the decorative surface is colored. The coating material composition contains a coloring material, a resin emulsion, and an alkali metal silicate, and the content of the alkali metal silicate is 5 parts by mass or more per 100 parts by mass of the solid content of the resin emulsion. [Selected figure] Figure 1C

Description

  The present invention relates to a coating material composition and a method for producing a colored cement-based cosmetic material.

  For example, various cement-based cosmetic materials are constructed on the floor, road surface, wall surface, etc. of a site such as a park, a promenade, and a construction (for example, approach and entrance of public facilities, commercial facilities and houses etc.). ing. Here, the cement-based decorative material refers to a cement-based substrate formed of a cement composition and a decorative member such as a beautiful aggregate (cobblestone, natural stone, artificial stone, etc.), tile, etc. exposed to the surface side. It is a cosmetic material in which the cosmetic member is fixed to a cement-based substrate or the like in a state where it is present. Such a cosmetic material is referred to as a cement-based cosmetic material in the present specification because it looks more beautiful than the surface of the cement-based substrate itself. Further, the surface of the cement-based decorative material on which the cement-based substrate and the decorative member are exposed is referred to as a decorative surface.

  For example, a cement-based decorative material using tiles or the like as a decorative member applies a cement composition forming a cement-based substrate to a casing so that joints (exposed parts of the cement-based substrate) are formed on the decorative surface It may be obtained by a method (pasting method) of pasting the above-mentioned decorative member thereon. Moreover, for example, in a cement-based decorative material using a beautiful aggregate as a decorative member, a large number of beautiful aggregate are obtained in a state where a cement-based substrate and a large number of beautiful aggregates are exposed on the surface of a casing. It may be obtained by fixing with a cement base material, a resin binder, etc. (for example, refer patent documents 1-4 etc.).

Unexamined-Japanese-Patent No. 2-066259 Japanese Patent Application Laid-Open No. 9-111706 JP-A-9-087063 JP 2004-244434 A

  In a cement-based decorative material having a decorative surface in which the cement-based substrate and the decorative member are exposed on the surface side, the exposed cement-based substrate in the decorative surface is affected by sunlight and wind and rain, and it is over time. Deterioration and dirt will occur. In addition, since the exposed cement-based substrate in the decorative surface of the cement-based decorative material is a cement-based substrate, a white product (white flower) that floats up may be generated on the surface portion thereof. The whitening phenomenon and the color unevenness due to the above-mentioned deterioration, dirt and the like may cause an appearance problem on the cosmetic surface of the cement-based cosmetic material.

  On the other hand, when color unevenness occurs in the exposed cement-based substrate on the cosmetic surface of the cement-based cosmetic material, if a general paint is temporarily applied to the entire cosmetic surface to hide the color unevenness, the surface of the decorative member is Also, a coating film is formed, which changes the appearance of the decorative member. Therefore, when color unevenness occurs or deterioration occurs in the exposed cement-based substrate on the decorative surface of the cement-based cosmetic material, the exposed cement-based substrate is repaired. For example, in the case of a cement-based decorative material using a beautiful aggregate as a decorative member, repair is performed by rubbing the cement composition into the exposed cement-based substrate in the decorative surface. Further, for example, in the case of a cement-based decorative material using tiles as a decorative member, repair is performed by filling a tile joint material such as a cement composition in the exposed cement-based substrate (joint) in the decorative surface. However, since cement is used for these repairs, as with cement-based substrates, whitening is likely to occur, and the finish of cement color (due to gray shades) tends to be finished, and color variations are abundant. Hard to turn.

  Then, this invention is colored on a cement-type base material, maintaining the external appearance of a makeup member among the decorative surfaces by apply | coating to the decorative surface which the cement-type base material and decorative member in a cement-type decorative material exposed. It is an object of the present invention to provide a coating material composition capable of suppressing color unevenness.

  That is, according to the present invention, it is a coating material composition which is used for a cement-based decorative material having a decorative surface on which a cement-based substrate and a decorative member are exposed, and which colors the cement-based substrate on the decorative surface And a coating material composition containing a color material, a resin emulsion, and an alkali metal silicate, wherein the content of the alkali metal silicate is 5 parts by mass or more per 100 parts by mass of the solid content of the resin emulsion. .

  According to the present invention, by applying the cement-based substrate and the decorative member in the cement-based cosmetic material to the exposed cosmetic surface, the cement-based substrate can be maintained while maintaining the appearance of the decorative member among the cosmetic surfaces. It is possible to provide a coating material composition capable of suppressing color unevenness by coloring.

It is a figure for demonstrating an example of the manufacturing method of the coloring cement-based decorative material of one Embodiment of this invention, and has a decorative surface (finished surface of a decorative aggregate layer) which is a target to which a coating material composition is applied. It is sectional drawing which represents a cement-type decorative material typically. It is sectional drawing which represents typically the state by which the coating material composition was apply | coated to the decorative surface (finishing surface of a makeup aggregate layer) of the cement-based decorative material shown to FIG. 1A. The coating material composition adhering to the surface of the decorative member (the beautiful aggregate) on the decorative surface (the finished surface of the decorative aggregate layer) of the cement-based decorative material shown in FIG. 1B schematically represents a washed-off state FIG. It is a figure for demonstrating an example of the manufacturing method of the coloring cement-based decorative material of one Embodiment of this invention, and it is a cement-based makeup which has a decorative surface (tiling finish surface) which is a target to which a coating material composition is applied. It is sectional drawing which represents a material typically. It is sectional drawing which represents typically the state by which the coating material composition was apply | coated to the decorative surface (tiling finish surface) of the cement-type decorative material shown to FIG. 2A. FIG. 2B is a cross-sectional view schematically showing a state in which the coating material composition adhering to the surface of the decorative member (beautiful aggregate) on the decorative surface (tiled surface) of the cement-based decorative material shown in FIG. is there.

  Hereinafter, although the embodiment of the present invention is described, the present invention is not limited to the following embodiment.

<Coating material composition>
The coating material composition of one embodiment of the present invention (hereinafter, may be simply described as "coating material composition") is a cement-based decorative material having a decorative surface on which a cement-based substrate and a decorative member are exposed. Used to color cement based substrates on the cosmetic surface. The coating material composition contains a colorant, a resin emulsion, and an alkali metal silicate. And content of the alkali metal silicate in this coating material composition is 5 mass parts or more per 100 mass parts of solid content of a resin emulsion.

  Since the coating material composition contains the alkali metal silicate in a specific range of amount, when it is applied to the decorative surface of the cement-based decorative material, the cement-based substrate in the decorative surface is compared to the decorative member in the decorative surface. It is easy to be fixed (it is easy to stick firmly). It is considered that this is because the alkali metal silicate contained in the coating material composition in a specific range of amount reacts with the calcium component contained in the cement-based substrate in the decorative surface. After a predetermined time after the coating material composition is applied to the cosmetic surface of the cement-based cosmetic material, the surface of the cement-based substrate on the cosmetic surface can be colored, and the cosmetic surface is washed or wiped with water to make up the cosmetic surface. The coating material composition on the surface of the member can be easily washed off. Therefore, it is possible to color the exposed cement-based substrate on the decorative surface while maintaining the appearance of the exposed decorative member on the decorative surface by the coating material composition, and the whitening, deterioration, and the like of the cement-based substrate. It is possible to suppress color unevenness and color change due to dirt and the like.

  When the coating material composition is applied to the decorative surface and the surface of the cement based substrate exposed on the decorative surface is colored, the coating material composition may be impregnated into the cement based substrate, and the exposure on the decorative surface is also performed. The coated film may be formed on the cement-based substrate. The formation of the coating film by the coating material composition on the exposed cement-based substrate in the decorative surface is for suppressing the deterioration of the exposed cement-based substrate on the decorative surface, improving the abrasion resistance, and improving the weather resistance. It is preferable because it can also contribute.

  First, a target on which the coating material composition is used, that is, a cement-based cosmetic having a decorative surface to which the coating material composition is to be applied will be described. The cement-based decorative material comprises a cement-based substrate and a decorative member. The cement-based decorative material has a decorative surface in which the cement-based substrate and the decorative member are exposed on the surface side. The coating material composition is applied to the cosmetic surface.

  The cement-based substrate is a substrate on which cement is used as a raw material, and is, for example, a hardened material formed of a cement composition such as cement paste, mortar, and fresh concrete. As cement base materials, cement paste obtained by mixing water with cement, mortar obtained by adding fine aggregate (sand) to the material of cement paste, and coarse aggregate (gravel) added to the material of mortar It may be any hardened material of fresh concrete.

  The decorative member is a member capable of giving the base on which the cement-based decorative material is provided a more beautiful appearance than the surface of a simple cement-based substrate. As the decorative member, it is preferable to use a material other than cement, and it is more preferable to use a material that does not react with the alkali metal silicate contained in the coating material composition. Suitable decorative members include, for example, beautiful aggregates such as cobbles, natural stones, artificial stones, artificial stones, marbles, and base stones; porcelain, ceramic, ceramic, wooden, plastic tiles, etc .; wood products; Glass products; glass blocks; and those obtained by crushing waste glass materials into aggregates; and the like. One or two or more of these cosmetic members can be used.

  As a decorative surface in which the cement-based base material and the decorative member in the cement-based decorative material are exposed on the surface side, for example, a beautiful aggregate as a decorative member such as a so-called washout finish, a terrazzo finish, and a polishing finish And the like, and a tiled surface including tiles as a decorative member.

  The finished surface of the cosmetic aggregate layer refers to the surface of the cosmetic aggregate layer, which is a cement-based cosmetic material, provided on the base. The cosmetic aggregate layer is a layer formed in a state in which the cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface. The cosmetic aggregate layer is formed, for example, by applying a cement composition for forming a cement-based substrate to a substrate, laying a plurality of beautiful aggregate in the applied cement composition so as to partially expose the surface thereof. It can be formed by curing a cement binder. In addition, the cosmetic aggregate layer, for example, applies a mixture containing a cement composition and a beautiful aggregate to a substrate, and after applying a curing retarder thereon, the cement composition other than the surface layer is cured and uncured It can also be formed by washing out the cement composition in the surface layer with water. Such a method is called a washing method by washing with water. Furthermore, after applying a mixture containing a beautiful aggregate and a resin binder to a substrate, for example, the cosmetic aggregate layer filled the space between the beautiful aggregate with a cement composition, and the cement composition became an initial setting. It may also be formed by removing the cement composition covering the surface so that the surface of the beautiful aggregate is sometimes exposed. Such a method is also referred to as a washout method. For the cosmetic aggregate layer, for example, a mixture of a beautiful aggregate and a cement composition is applied to a subbing layer such as cement mortar provided on a substrate, such as terrazzo finish and abrasive finish, etc. It may also be formed by polishing and polishing the surface after curing of the composition.

  The tiled surface includes a plurality of tiles applied so as to form a joint via the cement-based substrate with respect to the substrate, and a joint portion (exposed portion of the cement-based substrate). I say the surface. This tiled finish surface is, for example, applying a cement composition (cement paste, mortar, fresh concrete, etc.) for forming a cement-based substrate to a substrate, and arranging a plurality of tiles in such a manner that joints are formed there. It may be formed including a bonding step and the like. In the tiled surface, the exposed cementitious substrate, which is the joint portion, may be a cured product of a cement composition used as an adhesive to affix the tile to a substrate, as a joint filler in the joint It may be a cured product of the cement composition used.

  In addition, although mortar, concrete, asphalt, and a slate etc. can be mentioned as said base | substrate in which a cement-type cosmetic material is provided, If a cement-type cosmetic material can be formed, it will not be specifically limited.

  The coating material composition is used for the cement-based cosmetic material described above. The coating material composition contains a colorant, a resin emulsion, and an alkali metal silicate. As a form of these components, the resin emulsion is liquid, and the coloring material and the alkali metal silicate may be liquid or solid. The form of the coating material composition containing those components is liquid (including paste-like and paste-like, etc.) at the time of use (application), but even when the components are mixed immediately before application Good. Therefore, before application, the coating material composition is also in a form including a solid composition (for example, a powdery composition containing powdery components) and a liquid composition containing a resin emulsion. Good. For example, it may be a coating material composition in which the solid composition (powder composition) and the liquid composition are provided in separate containers. Hereinafter, each component of a coating material composition etc. is demonstrated.

  The coating material composition contains a colorant. When the coating material composition contains a coloring material, the exposed cement-based substrate on the decorative surface of the cement-based cosmetic material can be colored with the coating material composition (color material in the coating material composition). As the color by the coloring material, for example, white, gray, black, red, yellow, green, blue, purple, yellowish red, yellowish green, bluish green, blue-violet, red Although each color, such as purple type and brown type, can be mentioned, it is not limited to these.

  The colorant is not particularly limited, and pigments such as inorganic pigments and organic pigments, and dyes such as natural dyes and synthetic dyes can be used. One or more of these colorants can be contained in the coating material composition. As a coloring material, it is preferable to use a pigment (coloring pigment). Examples of the inorganic pigment include titanium dioxide, zinc flower, lithopone, iron oxide, red lead, chromium vermillion, yellow lead, zinc yellow, chromium oxide, ultramarine blue, bitumen, carbon black and the like. Examples of organic pigments include azo pigments such as monoazo pigments, disazo pigments and pyrazolone pigments; and phthalocyanine pigments, quinacridone pigments, perinone pigments, isoindolinone pigments, isoindoline pigments, xanthene pigments, dioxazine pigments, anthraquinone pigments, Polycyclic pigments such as quinophthalone pigments can be mentioned.

  The content of the coloring material in the coating material composition is preferably 0.5 to 10% by mass, and more preferably 1 to 10% by mass, based on the mass of the total solid content of the coating material composition. Preferably, it is more preferably 2 to 8% by mass.

  In addition, the coating material composition contains a resin emulsion. When the coating material composition contains a resin emulsion, the coloring material in the coating material composition can be fixed to the surface of the exposed cement-based substrate on the decorative surface of the cement-based cosmetic material, and the coating film It becomes easy to form.

  The resin emulsion is not particularly limited as long as it is an emulsion resin. As a resin emulsion, for example, acrylic resin emulsion, urethane resin emulsion, styrene resin emulsion, vinyl acetate resin emulsion, vinyl chloride resin emulsion, fluorine resin emulsion, silicone resin emulsion, vinyl chloride-acrylic resin Emulsion, styrene-acrylic resin emulsion, vinyl acetate-acrylic resin emulsion, ethylene-vinyl acetate resin emulsion, ethylene-vinyl chloride resin emulsion, ethylene-vinyl acetate-acrylic resin emulsion, ethylene-vinyl acetate-vinyl chloride -Based resin emulsion, vinyl chloride-vinyl acetate resin emulsion, silicone-acrylic resin emulsion, silicone-urethane resin emulsion, etc. It is possible. One or more of these resin emulsions can be used.

  As a resin emulsion, an acrylic resin emulsion is preferable. In the present specification, the acrylic resin refers to 50 mol% or more of a structural unit derived from a monomer having an acryloyl group and / or a methacryloyl group with respect to all the structural units derived from monomers constituting the acrylic resin (preferably (60 mol% or more)). As said monomer, (meth) acrylic acid, and (meth) acrylic acid ester etc. can be mentioned, for example. As used herein, the term "(meth) acrylic" is meant to include both acrylic and methacrylic, and the term "(meth) acrylate" includes both acrylate and methacrylate. means.

  As a monomer which comprises acrylic resin in acrylic resin emulsion, (meth) acrylic acid; methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n -Butyl (meth) acrylate, isobutyl (meth) acrylate, n-hexyl (meth) acrylate, n-octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cetyl (meth) acrylate, stearyl (meth) acrylate, and (Meth) acrylic acid alkyl esters such as cyclohexyl (meth) acrylate; 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate And (meth) acrylic acid hydroxyalkyl esters such as 4-hydroxybutyl (meth) acrylate; (meth) acrylic acid alkoxyalkyl esters such as 2-methoxyethyl (meth) acrylate and 2-ethoxyethyl (meth) acrylate; benzyl Examples include (meth) acrylic acid aralkyl esters such as (meth) acrylates; and (meth) acrylic acid aryl esters such as phenyl (meth) acrylates. One of these may be used alone, and preferably two or more may be used.

  As an aqueous medium contained in the resin emulsion, water is suitable, and only water may be used, or a mixed medium of water and an organic solvent may be used. Examples of the organic solvent include, but are not limited to, methanol, ethanol, isopropanol, ethyl carbitol, and N-methyl pyrrolidone. In addition, one or more organic solvents may be used.

  The solid content (evaporation residue) of the resin emulsion is preferably 5 to 60% by mass, more preferably 5 to 50% by mass, and more preferably 8 to 40% by mass, when it is contained in the coating material composition. It is further preferred that The content of the resin emulsion solid content in the coating material composition is preferably 5 to 50% by mass, and more preferably 7 to 40% by mass, based on the mass of the total solid content of the coating material composition. Preferably, it is 9 to 30% by mass.

  Furthermore, the coating composition contains an alkali metal silicate. When the coating material composition contains an alkali metal silicate, it is considered that the alkali metal silicate reacts with the calcium component contained in the cement-based substrate in the decorative surface of the cement-based decorative material. This makes it easy to color the exposed cement-based substrate in the decorative surface of the cement-based decorative material and to maintain the appearance of the exposed decorative member in the decorative surface.

The alkali metal silicate can be represented by the general formula (1): M ₂ O · nSiO ₂ . In general formula (1), M represents an alkali metal and n represents a molar ratio of SiO ₂ / M ₂ O. As an alkali metal, lithium, sodium, potassium, etc. can be mentioned, sodium and potassium are preferable, and sodium is more preferable. The molar ratio n is determined by {(SiO ₂ mass% / SiO ₂ formula weight) / (M ₂ O mass% / M ₂ O formula weight)}. The molar ratio n is preferably 0.4 to 4.0, more preferably 0.5 to 4.0, and still more preferably 0.5 to 3.5. As the alkali metal silicate, it is preferable to use either one or both of sodium silicate (Na ₂ O · nSiO ₂ ) and potassium silicate (K ₂ O · nSiO ₂ ). In the present specification, sodium silicate may be described as sodium silicate.

  The form of the alkali metal silicate may be any of solid form such as crystalline form, powder form and granular form, and solution form. As a solid alkali metal silicate, for example, sodium orthosilicate (molar ratio n ≒ 0.5) having a molar ratio n in the range of 0.4 to 0.6, and molar ratio n of 0.9 to 1 can be obtained. Crystalline sodium silicate such as sodium metasilicate (molar ratio n ≒ 1.0) in the range of 0.1; potassium metasilicate (molar ratio n ≒ 1.) In which the molar ratio n is in the range of 0.9 to 1.1. 0); and powdered sodium silicate obtained by dehydrating a sodium silicate solution.

  As a solution-form alkali metal silicate, a sodium silicate solution (sodium silicate aqueous solution), a potassium silicate solution (potassium silicate aqueous solution), etc. can be mentioned, for example. As the sodium silicate solution, for example, a sodium silicate solution having a molar ratio n in the range of 2.0 to 2.3, a sodium silicate solution having a molar ratio n in the range of 2.4 to 2.7, and a molar ratio n of Sodium silicate solution in the range of 3.0-3.3, sodium silicate solution in the molar ratio n in the range of 3.3-3.5, and molar ratio n in the range of 3.6-3.9 Sodium silicate solution etc. can be mentioned.

  The potassium silicate solution includes, for example, a potassium silicate solution having a molar ratio n in the range of 1.8 to 2.2, a potassium silicate solution having a molar ratio n in the range of 2.5 to 2.7, and a molar ratio n A potassium silicate solution in the range of 2. 7 to 3.0, a potassium silicate solution in which the molar ratio n is in the range of 2.9 to 3.2, and a molar ratio n in the range of 3.4 to 3.7 A potassium silicate solution etc. can be mentioned. When potassium silicate is used as the alkali metal silicate, a potassium silicate solution having a molar ratio n in the range of 1.8 to 3.2 is preferred.

  One or more of each of the solid and solution alkali metal silicates described above can be used. Among them, solid sodium silicate is preferable, and the above-mentioned sodium metasilicate and powdered sodium silicate are more preferable. As sodium metasilicate, either a water salt or an anhydrous salt can be used. Further, the molar ratio n of the powdered sodium silicate is preferably in the range of 2.0 to 3.5, more preferably in the range of 2.0 to 3.3, and 2.0 to 2. More preferably, it is within the range of 3.

The content (use amount) of the alkali metal silicate in the coating material composition is 5 parts by mass or more per 100 parts by mass of the solid content of the resin emulsion. The coating material composition contains the alkali metal silicate in the above specific amount, so that the cement base material can be favorably colored while maintaining the appearance of the decorative member among the cosmetic surface of the cement based cosmetic material It is possible to suppress the color unevenness of the cement-based substrate. From the viewpoint of enhancing such effects, the content (use amount) of the alkali metal silicate is preferably 7 parts by mass or more, more preferably 15 parts by mass or more, and 25 parts by mass or more. Is more preferred. The upper limit of the content of the alkali metal silicate is not particularly limited, but is preferably 950 parts by mass or less, more preferably 550 parts by mass or less, in order to facilitate dissolution in an aqueous medium contained in the resin emulsion. Preferably, it is more preferably 300 parts by mass or less. The content of the alkali metal silicate is the content of the M ₂ O · nSiO _2, the ratio of alkali metal oxide in the alkali metal silicate (M ₂ O%) and the proportion of silicon dioxide (SiO _2% It can be determined based on the total value of

  When sodium metasilicate is used as the alkali metal silicate, the content of sodium metasilicate in the coating material composition is preferably 5 to 250 parts by mass per 100 parts by mass of the solid content of the resin emulsion, and 7 to 250 It is more preferable that it is a mass part, and it is further more preferable that it is 15-150 mass parts.

  When powdered sodium silicate is used as the alkali metal silicate, the content of powdered sodium silicate in the coating material composition is preferably 25 to 950 parts by mass per 100 parts by mass of the solid content of the resin emulsion, and 25 to 550 It is more preferable that it is a mass part, and it is further more preferable that it is 30-550 mass parts.

  When using potassium silicate as the alkali metal silicate, the content of potassium silicate in the coating material composition is preferably 50 to 540 parts by mass, and 52 to 54 parts by mass with respect to 100 parts by mass of the solid content of the resin emulsion. And more preferably 52 to 290 parts by mass.

The content as M ₂ O · n SiO ₂ in the alkali metal silicate in the coating material composition is preferably 1 to 80 mass% based on the mass of the total solid content of the coating material composition, and 2 to 2 It is more preferably 70% by mass, and still more preferably 5 to 50% by mass.

  The coating material composition preferably contains silica sand in addition to the colorant, the resin emulsion, and the alkali metal silicate. Furthermore, the coating material composition may optionally contain one or more extender pigments such as calcium carbonate, barium sulfate, aluminum hydroxide, and talc. When the coating material composition contains silica sand or silica sand and an extender pigment, the cement-based substrate on the decorative surface of the cement-based decorative material has a matte appearance and a good appearance. Moreover, when a coating film is formed of the coating material composition, non-slip (anti-slip) performance, anti-cracking performance, concealing performance of the base, etc. can be imparted to the coating film.

  When using silica sand as a component of a coating material composition, it is preferable that a coating material composition contains the powdery composition containing at least silica sand, and the liquid composition containing at least the above-mentioned resin emulsion. In this case, the alkali metal silicate is preferably contained in at least one of the powdery composition and the liquid composition, and may be contained in only one of them, or in both of them. It may be When using powdery alkali metal silicate, it is preferable that the powdery alkali metal silicate is contained in the powdery composition, and when using a solution alkali metal silicate. Preferably, the solution-like alkali metal silicate is contained in the liquid composition. In addition, a coloring material may be contained in only one of the powdery composition and the liquid composition, or may be contained in both of them, and when using a pigment suitable as a coloring material, a pigment Is preferably contained in a powdery composition.

  The content of silica sand in the coating material composition is preferably 10 to 80 mass%, more preferably 20 to 70 mass%, based on the mass of the total solid content of the coating material composition. It is further more preferable that it is 60 mass%.

  The coating material composition may contain other additives in addition to the above-described components, as necessary. Other additives include, for example, plasticizers, antifoaming agents, leveling agents, surfactants, thickeners, dispersing agents, anti-sagging agents, anti-settling agents, thixotropic agents, water retention agents, matting agents, anti-mold agents Agents and preservatives can be mentioned.

<Method of producing colored cement-based cosmetic material>
The method for producing a colored cementitious cosmetic material according to one embodiment of the present invention comprises the step of applying a coating material composition to a cosmetic surface of a cementitious cosmetic material having a cosmetic surface on which a cementitious substrate and a cosmetic member are exposed. Including. Moreover, this manufacturing method washes off the coating material composition adhering to (contacting with) the surface of the decorative member on the decorative surface to which the coating material composition has been applied, and removes the cement base material on the decorative surface. Including the step of coloring. The coating material composition used in this manufacturing method contains a coloring material, a resin emulsion, and an alkali metal silicate, and the content of the alkali metal silicate is 5 parts by mass or more per 100 parts by mass of the solid content of the resin emulsion. It is a thing. The coating material composition which concerns on the above-mentioned embodiment can be used suitably for this manufacturing method.

  In the present specification, in order to distinguish the cement-based cosmetic material to which the coating material composition is provided, from the colored cement-based cosmetic material obtained by the manufacturing method of one embodiment of the present invention, it is described as "cosmetic material body". There is something to do. Moreover, in this specification, in order to distinguish the cement-based decorative material obtained by the manufacturing method according to one embodiment of the present invention from the cement-based decorative material to which the coating material composition is provided, the wording "coloring" is used. In addition, it may be described as "colored cement-based cosmetic." Hereinafter, with reference to the drawings, a method for producing a colored cementitious cosmetic material will be described.

  FIGS. 1A to 1C and FIGS. 2A to 2C are views for explaining a method of manufacturing the colored cement-based decorative material 110, 210 according to an embodiment of the present invention. FIGS. 1A to 1C show a cosmetic material having a decorative surface (a finished surface of the above-mentioned cosmetic aggregate layer) 11a on which a cement-based substrate 12 and a beautiful aggregate 14 are exposed as a target to which the coating material composition 10 is applied. It is a figure at the time of using the main body 11. FIG. Further, FIGS. 2A to 2C show a makeup having a decorative surface (the above-described tile-finished surface) 21a on which the cement-based substrate 22 (joint 22a) and the tile 24 are exposed as a target to which the coating material composition 10 is applied. It is a figure at the time of using the material main body 21. FIG. Specifically, FIG. 1A and FIG. 2A are cross-sectional views schematically showing the cosmetic material main bodies 11 and 21 provided on the base 1. FIG. 1B and FIG. 2B are cross-sectional views schematically showing a state in which the coating material composition 10 is applied to the cosmetic surfaces 11a, 21a of the cosmetic material bodies 11, 21. As shown in FIG. FIGS. 1C and 2C show that the coating material composition 10 adhering to the surface of the decorative member (the beautiful aggregate 14 or the tile 24) on the decorative surface 11a, 21a to which the coating material composition 10 is applied is washed away. It is sectional drawing which represents a state typically. In addition, in FIG. 1C and FIG. 2C, in order to facilitate the description of the method of manufacturing the colored cement-based decorative material 110, 210, the cement-based substrate 12, 22a exposed in the decorative surface 11a, 21a is coated with The case where the coating film 100 is formed by the composition 10 is illustrated.

  In the process of applying the coating material composition 10 to the cosmetic surfaces 11a and 21a of the cosmetic material bodies 11 and 21, as shown in FIGS. 1B and 2B, the cement base 12 and 22a and the cosmetic members in the cosmetic surfaces 11a and 21a The coating material composition 10 can be applied to the decorative surfaces 11a and 21a without distinction between 14 and 24. That is, in the decorative surfaces 11a and 21a, the portion colored with the coating material composition 10 is a portion of the cement-based substrate 12 and 22a (see FIG. 1C and FIG. 2C). The coating material composition 10 can be applied to the whole of the decorative surface 11a, 21a in the area including the cement-based substrate 12, 22a to be colored (see FIGS. 1B and 2B). Therefore, in this step, the cement composition is rubbed into the cement based substrate 12, 22 (22a) among the exposed cement based substrates 12, 22a and the decorative members 14, 24 on the decorative surfaces 11a, 21a. Compared to the repair work performed by packing, it can be easily performed.

  It does not specifically limit as a method to apply the coating material composition 10 to the decorative surfaces 11a and 21a, For example, systems, such as brush coating, roller coating, and a spray application, can be taken. The surface of the decorative members 14 and 24 is higher on the surface side of the cosmetic surfaces 11a and 21a of the cosmetic material bodies 11 and 21 than on the surface of the cement base 12 or 22 (22a) on the cosmetic surfaces 11a and 21a. It may be out (see FIGS. 1A and 2A). Also in such a case, it is preferable to apply the coating material composition 10 by brush coating so that the coating material composition 10 can be favorably applied to the surfaces of the cement-based substrates 12 and 22 (22a).

The amount of the coating material composition 10 applied to the decorative surfaces 11a and 21a is preferably 100 to 1000 g (wet) / m ² by mass of the coating material composition 10 per unit area of the decorative surfaces 11a and 21a. , more preferably 150~800g (wet) / m ^2, further preferably 200~500g (wet) / m ^2.

  After the coating material composition 10 is applied to the cosmetic surfaces 11 a and 21 a of the cosmetic material bodies 11 and 21, the alkali metal silicate in the coating material composition 10 is contained in the cement base 12 and 22 and the calcium component It is preferable to set for a predetermined time so as to sufficiently react or to sufficiently adhere the coating material composition 10 to the cement-based substrate 12, 22. The time is, for example, preferably 15 minutes to 24 hours, more preferably 0.5 to 6 hours, and more preferably 0.5 to 3 hours under an environment of normal temperature (20 ° C. ± 15 ° C.) It is further preferred that

  After the process of applying the coating material composition 10 to the cosmetic surfaces 11a and 21a of the cosmetic material bodies 11 and 21, as shown in FIGS. 1C and 2C, the cosmetic surface 11a to which the coating material composition 10 has been applied, A step of washing off the coating material composition 10 adhering to the surface of the decorative members 14 and 24 in 21a and coloring the cement based substrates 12 and 22a on the decorative surfaces 11a and 21a is performed. In this process, the coating material composition 10 applied to the cosmetic surfaces 11a and 21a of the cosmetic material bodies 11 and 21 adheres to the cement base 12 and 22a in the cosmetic surfaces 11a and 21a, so the cosmetic surfaces 11a and 21a The wash-off work of the coating material composition 10 applied to the decorative surfaces 11a and 21a can be performed without distinction between the cement-based substrates 12 and 22 and the decorative members 14 and 24 in the above. This washing operation can be performed, for example, by rubbing with a sponge or cloth containing water, wiping, or lightly rubbing with a brush and a brush or the like while flowing water. By such an operation, the coating material composition 10 adhering to the surfaces of the decorative members 14 and 24 on the decorative surfaces 11a and 21a can be removed.

  In the method for producing colored cementitious cosmetic materials 110 and 210 according to an embodiment of the present invention, the coating material composition is applied before the process of applying the coating material composition 10 to the cosmetic surfaces 11a and 21a of the cosmetic material bodies 11 and 21. You may include the process of producing the makeup material main body (cement system makeup material) 11 and 21 which has the makeup | decoration surface 11 and 21a which is the object by which 10 is apply | coated. A well-known method can be taken for the process of producing cosmetics main part 11 and 21. In this step, for example, it is preferable to obtain the cosmetic material main body 11 having the finished surface 11a of the above-mentioned cosmetic aggregate layer and the cosmetic material main body 21 having the above-mentioned tiled finished surface 21a.

  In the step of obtaining the cosmetic material main body 21, for example, the cement composition forming the cement base material 22 is applied to the substrate 1 by using a weir or the like to form a layer of the cement composition, and the joint 22a is formed in the layer. The step of attaching a plurality of tiles 24 can be mentioned. According to such a process, it is possible to obtain the decorative material main body 21 having the tiled finished surface 21 a including the plurality of tiles 24 and the joint 22 a portion of the cement-based substrate 22. In this step, a layer of cement composition may be provided on the back of the tile 24.

  Moreover, as a process of obtaining the cosmetic material main body 11, for example, a cement composition forming the cement base 12 or a mixture containing the cement composition and a large number of beautiful aggregates 14 is applied to the substrate 1 There may also be mentioned a step of curing the cement composition in a state in which the surface is exposed and a part of the beautiful aggregate 14 is exposed to the applied cement composition. Furthermore, in the step of obtaining the cosmetic material main body 11, for example, a mixture containing a cement composition and a beautiful aggregate 14 is applied to the substrate 1 by using a weir or the like, and a hardening retarder is dispersed thereon, It is also possible to cite the steps of curing the composition and washing out the cement composition of the uncured surface layer with water. Moreover, as a process of obtaining the cosmetic material main body 11, for example, after a mixture containing a beautiful aggregate 14 and a resin binder is applied to the base 1 with a scissors etc. and cured, a cement composition with a rubber mallet or a lake etc. (Clad material) is applied to fill in between the beautiful aggregate 14 and the cement composition covering the surface is exposed so that the surface of the beautiful aggregate 14 is exposed when the cement composition becomes an initial setting. It can also be removed by scraping with a rubber mallet or wiping with a sponge or cloth containing water.

  Furthermore, even before the process of producing the cosmetic material bodies 11 and 21, the substrate 1 to be provided with the cosmetic material bodies 11 and 21 may be subjected to a pretreatment process such as washing, drying, and primer application. Good. Moreover, you may perform the process of obtaining base | substrate (housing) 1, such as mortar and concrete.

  According to the method of manufacturing the colored cementitious cosmetic composition 110, 210 of the embodiment of the present invention, the appearance of the cosmetic component 14, 24 exposed on the cosmetic surface 11a, 21a of the cosmetic material body 11, 21 in an easy operation. The exposed cement-based substrate 12, 22 (22a) in the decorative surface 11a, 21a can be colored while maintaining the Therefore, a cement-based cosmetic material (colored cement-based material in which color unevenness and color change due to whitening, deterioration, stains and the like of the exposed cement-based substrates 12 and 22 on the cosmetic surfaces 11a and 21a of the cosmetic material bodies 11 and 21 is suppressed Cosmetics 110, 210) can be obtained.

  As described above in detail, by using the coating material composition according to one embodiment of the present invention, color unevenness due to whitening, deterioration, dirt, etc. of the exposed cement-based substrate on the decorative surface of the cosmetic material main body Color change etc. can be renewed. In addition, it is also possible to obtain a cement-based decorative material having a design in which the exposed cement-based substrate on the decorative surface is colored differently from the color of the cement-based material from the beginning of production of the cement-based decorative material.

In addition, the coating material composition of one Embodiment of this invention can take the structure of the following [1]-[9], and the manufacturing method of the coloring cement-based cosmetic material of one Embodiment of this invention is It is possible to adopt the following configurations [10] to [12].
[1] A coating material composition that is used for a cement-based cosmetic material having a cosmetic surface on which a cement-based substrate and a cosmetic member are exposed, and which colors the cement-based substrate on the cosmetic surface; A coating material composition containing an emulsion and an alkali metal silicate, wherein the content of the alkali metal silicate is 5 parts by mass or more per 100 parts by mass of the solid content of the resin emulsion.
[2] A powdery composition containing at least silica sand, and a liquid composition containing at least the resin emulsion, wherein at least one of the powdery composition and the liquid composition contains the alkali metal silicate The coating material composition as described in said [1] which is being carried out.
[3] The coating material composition according to the above [1] or [2], wherein the content of the alkali metal silicate is 5 to 950 parts by mass per 100 parts by mass of the solid content of the resin emulsion.
[4] The coating material composition according to any one of the above [1] to [3], wherein the alkali metal silicate contains at least one of sodium silicate and potassium silicate.
[5] The alkali metal silicate contains sodium metasilicate, and the content of the sodium metasilicate is 5 to 250 parts by mass per 100 parts by mass of the solid content of the resin emulsion. ] The coating material composition in any one of.
[6] The alkali metal silicate contains powdered sodium silicate, and the content of the powdered sodium silicate is 25 to 950 parts by mass per 100 parts by mass of the solid content of the resin emulsion. ] The coating material composition in any one of.
[7] The alkali metal silicate contains potassium silicate, and the content of the potassium silicate is 50 to 540 parts by mass with respect to 100 parts by mass of the solid content of the resin emulsion. The coating material composition as described in any one.
[8] The coating material composition according to any one of the above [1] to [7], wherein the resin emulsion contains an acrylic resin emulsion.
[9] Any of the above-mentioned [1] to [8], wherein the decorative surface is a finished surface of a decorative aggregate layer containing a beautiful aggregate as the decorative member, or a tiled finished surface containing a tile as the decorative member The coating material composition as described in.
[10] A step of applying a coating material composition to the decorative surface of a cementitious cosmetic material having a decorative surface to which a cement base material and a decorative member are exposed, and the decorative surface to which the coating material composition is applied Washing out the coating material composition adhering to the surface of the decorative member in step (4), and coloring the cement-based substrate on the decorative surface, wherein the coating material composition comprises a coloring material, a resin emulsion, And a method for producing a colored cementitious cosmetic material, comprising an alkali metal silicate, wherein the content of the alkali metal silicate is 5 parts by mass or more per 100 parts by mass of the solid content of the resin emulsion.
[11] The method for producing a colored cementitious cosmetic material according to the above [10], which comprises the step of producing the cementitious cosmetic material having the decorative surface before the step of applying the coating material composition.
[12] The method for producing a colored cementitious cosmetic material according to the above [10] or [11], wherein the coating material composition is the coating material composition according to any one of the above [1] to [9].

  Hereinafter, the coating material composition according to the above-described embodiment and the method for producing a cement-based decorative material using the same will be more specifically described by way of test examples, but the present invention is limited by the following test examples. It is not a thing. In addition, "%" and "part" in the following sentences are mass references ("mass%" and "part by mass", respectively) unless otherwise specified.

[Test Example A]
(Preparation of cement-based cosmetic material)
A commercially available concrete flat plate (300 mm × 300 mm × thickness 60 mm) was used as a substrate. A frame (28 cm × 28 cm = 784 cm ² ) is made on this substrate with a backup material of 10 mm in width and 8 mm in height, and within that frame, "Color washout TX-604" (made by Yabuhara Sangyo Co., Ltd.) Was installed. A cement-based cosmetic having a cosmetic surface (finished surface of the cosmetic aggregate layer) exposed to the mortar layer as a cement base and the beautiful aggregate as a decorative member after curing for 7 days or more at 20 ° C. A material (cosmetic aggregate layer) was obtained.

(Preparation of coating material composition)
Each component was mix | blended by the composition (unit: g) shown to the upper stage of postscript Table 1 (Table 1-1 to 1-5), and the coating material composition was prepared. In the middle part of the table, the coating amount (g / m ² ) of the coating material composition on the cosmetic surface of the cement-based cosmetic material, the emulsion solid content (g) in the coating material composition and Na ₂ O · nSiO ₂ The amount (g), as well as the content (parts) of Na ₂ O · nSiO ₂ per 100 parts of emulsion solids are indicated. Moreover, the following materials were used for the coating material composition.
Silica sand: Takeori Silica sand No. 9 (particle size: 100 μm or less, manufactured by Bamboo Orochi Industry Co., Ltd.)
Anhydrous sodium metasilicate (appearance: white powder, molar ratio: 0.9 to 1.1, Na ₂ O nSiO ₂ content: 97.1%, manufactured by Nippon Chemical Industrial Co., Ltd.)
Powdered sodium silicate No. 1 (Appearance: white powder, molar ratio: 2.05 to 2.25, Na ₂ O nSiO ₂ content: 77.0%, manufactured by Nippon Chemical Industrial Co., Ltd.)
Powdered sodium silicate No. 2 (Appearance: white powder, molar ratio: 2.35 to 2.65, Na ₂ O nSiO ₂ content: 77.2%, manufactured by Nippon Chemical Industrial Co., Ltd.)
Powdered sodium silicate No. 3 (Appearance: white powder, molar ratio: 3.00 to 3.30, Na ₂ O nSiO ₂ content: 80.6%, manufactured by Nippon Chemical Industrial Co., Ltd.)
・ Pigment (color: brown, trade name "Main Bayer tea (610)", sold by Yabu Hara)
Antifoaming agent (silicone antifoaming agent, trade name "KM-70", manufactured by Shin-Etsu Chemical Co., Ltd.)
Emulsion A: copolymer emulsion of n-butyl acrylate and methyl methacrylate (evaporation residue: 41.0 to 43.0%, viscosity: 500 to 1500 mPa · s / 25 ° C., pH 8.6 to 9.2, Tg Diluted with water so as to obtain “solid content in emulsion” shown in the middle of the table: 17 ° C. (calculated value), minimum film forming temperature: 0 ° C. or less, particle diameter: 0.10 μm or less; Emulsion B Copolymer emulsion of 2-ethylhexyl acrylate and methyl methacrylate (evaporation residue: 48.0 to 50.0%, viscosity: 2500 to 5500 mPa · s / 25 ° C., pH 8.0 to 9.0, Tg: -9) Diluted with water so that “solid content in emulsion” shown in the middle part of the table is the minimum film-forming temperature: 2 ° C., particle diameter: 0.11 μm)

(Preparation of colored cement-based cosmetic material)
A 140 mm × 140 mm frame was made of masking tape on the decorative surface of the cement-based decorative material (the finished surface of the decorative aggregate layer). In the frame, the prepared coating material composition is coated with a brush (hair length 32 mm, ball thickness 5 mm, width 24 mm, the same shall apply hereinafter) in the coating amount shown in the middle of Table 1, and 3 in a room at 20 ° C. I left for a while. Thereafter, the surface of the coating material composition applied is lightly scrubbed and colored using a water and a filter sponge (trade name "Malt filter MF-13" manufactured by Inoac Corporation, hereinafter the same). A cement-based cosmetic was obtained.

  Thus, in the process of obtaining a colored cement-based cosmetic material, the "application condition" and "wipe condition" of the coating material composition, and the "finishing condition" of the obtained colored cement-based cosmetic material were evaluated by the following methods. . In the evaluation, in consideration of the fact that “coating condition” can be improved by additives etc., a case where “wipe condition” and “finishing condition” are both “A” or “B” was regarded as pass. The evaluation results of Test Example A are shown in the lower part of Table 1.

(Coating condition)
The application condition when the coating material composition was applied to the finished surface of the decorative aggregate layer was evaluated according to the following evaluation criteria.
A: It has moderate viscosity, good covering and spreading properties on the cosmetic aggregate layer, and is uniformly coated.
B: Although the viscosity is low, the covering and spreading properties to the cosmetic aggregate layer are good and uniform.
C: The viscosity was too high, the spreadability was poor, and the coating was not uniform.
D: The viscosity was too low to separate the components, and the cosmetic aggregate layer was not uniformly applied.

(Wipe condition)
The filter sponge was slid vertically and horizontally with a constant force, and the removal condition when the coating material composition applied to the finished surface of the cosmetic aggregate layer was removed was evaluated according to the following evaluation criteria.
A: The finished surface of the cosmetic aggregate layer could be wiped off easily.
B: The sliding action of the filter sponge was resistant, and the wiping operation took time.
C: The sliding action of the filter sponge was strong and wiping was difficult.
D: Moist wiping of the coating material composition from the beautiful aggregate, or almost no wiping.

(Finish condition)
The finish condition of the obtained colored cement-based cosmetic material was evaluated according to the following evaluation criteria by visually confirming.
A: There were no spots on the exposure of the beautiful aggregate, and a beautiful finish and coloring of the mortar layer were obtained.
B: There were slight spots on the exposure of the beautiful aggregate, but at first, the finish was beautiful and the mortar layer was colored.
C: The exposure of the beautiful aggregate had spots, and a beautiful finish was not obtained.
D: The beautiful aggregate could hardly be exposed, or neither the beautiful aggregate layer nor the mortar layer could be colored.

  From the results of Test Example A, a coated material composition containing 5 or more parts of an alkali metal silicate per 100 parts of the solid content of the resin emulsion provides a colored cement-based cosmetic material having good wiping and finishing conditions. The Therefore, while maintaining the appearance of the decorative member (the beautiful aggregate) among the decorative surfaces (the finish surface of the decorative aggregate layer) of the cement-based decorative material (the decorative aggregate layer) by the coating material composition, the cement-based It has been found that it is possible to suppress unevenness in color by coloring the substrate (mortar layer).

[Test Example B]
The coating material compositions 18, 19 and 20 used in Test Example A were subjected to a test to confirm the abrasion resistance of the coating film of these coating material compositions.

A commercially available 3 mm thick slate plate was used as a substrate, cut to dimensions of 110 mm in width and 110 mm in length. A backing material of 5 mm in width and 3 mm in height is attached to this substrate, and a reinforcing agent obtained by the method disclosed in the example of JP 2008-38383 A (special aqueous solution) in a frame of 10 cm × 10 cm = 100 cm ² The primer was applied with 1.5 g (150 g / m ² ) brush. A cement binder and water and the mixture prepared by mixing water were put up with a bowl and leveled to form a mortar layer having a coating thickness of 3 mm, and finished by brushing. The cement binder includes 33 parts of ordinary Portland cement gray, 67 parts of river sand (thin), 0.03 parts of water-soluble cellulose ether (trade name "Metroze 90 SH-4000", Shin-Etsu Chemical Co., Ltd.), and water 22 53 g (5.3 kg / m ² ) of a cement composition consisting of parts were used. The mortar layer was prepared and used after standing still at 20 ° C. for 14 days or more. The coating material composition was applied to the produced mortar layer by brushing 4.2 g (420 g / m ² ) to form a coating, and after standing still in a room at 20 ° C. for 7 days, a wear test was conducted. The Further, as a comparative reference example B, a wear test was also conducted on the mortar layer without applying the coating material composition. For the abrasion test, a Taber abrasion tester (manufactured by Toyo Seiki Seisaku-sho, Ltd.) was used. Wear conditions were: wear wheel: CS-17, speed: 60 rpm, rotational speed: 100 revolutions, and load: 4.9 N / wheel (500 gf / wheel). The results of Test Example B (wear test) are shown in Table 2.

  From the results of Test Example B, the coatings of the coating material compositions 18, 19 and 20 all had very low abrasion loss compared to the mortar layer of Reference Example B. Therefore, by forming a coating film of the coating material composition on the exposed cement-based substrate in the decorative surface of the cement-based cosmetic material, the abrasion resistance of the exposed cement-based substrate in the decorative surface is improved and deteriorated. It has been confirmed that it can contribute to the suppression of

[Test Example C]
Next, using a cement-based decorative material different from the cement-based decorative material used in Test Example A, tests and evaluations were performed in the same manner as in Test Example A.

(Preparation of cement-based cosmetic material)
A commercially available concrete flat plate (300 mm × 300 mm × thickness 60 mm) was used as a substrate. A frame (28 cm × 28 cm = 784 cm ² ) of 10 mm in width and 10 mm in height is formed on this substrate, and the reinforcement obtained by the method disclosed in the example of Japanese Patent Application Laid-Open No. 2008-38383 is formed in the frame. The agent (special aqueous primer) was applied with 11.8 g (150 g / m ² ) brush. A cement binder and a mixture prepared by mixing water are placed on a flat with a brush to form a mortar layer having a thickness of 7 mm in 784 cm ² , and a plurality of beautiful aggregate are arranged thereon, Equally embedded. After 2 hours, the mortar layer on the surface is removed with a left-handed brush, and the beautiful aggregate is exposed, and the cosmetic surface on which the mortar layer as a cement base and the beautiful aggregate as a decorative member are exposed A cementitious cosmetic material (cosmetic aggregate layer) having a finished surface of Under the present circumstances, 870 g (11.1 kg / m < ² >) of large diameter 8-10 mm (three minutes stone) of the diameter of a large grain single grain was used for the beautiful aggregate. The cement binder includes 33 parts of ordinary Portland cement gray, 67 parts of river sand (thin), 0.03 parts of water-soluble cellulose ether (trade name "Metroze 90 SH-4000", Shin-Etsu Chemical Co., Ltd.), and water 22 990 g (12.7 kg / m ² ) of a cement composition consisting of parts were used. A cosmetic aggregate layer was prepared and used after curing at 20 ° C. for 7 days or more.

(Preparation of coating material composition)
Each component was mix | blended by the composition (unit: g) shown to the upper stage of postscript table 3, and the coating material composition was prepared. In the middle part of the table, the same items as those in Table 1 described above are shown. Further, the components of the coating material composition used in Test Example C also used the same materials as the components of the coating material composition used in Test Example A.

(Preparation of colored cement-based cosmetic material)
A frame of 9.3 cm × 28 cm ≒ 260 cm ² was formed on the decorative surface of the cement-based decorative material with masking tape. In the frame, the prepared coating material composition was coated with 7.8 g (300 g / m ² ) with a brush and allowed to stand in a room at 20 ° C. for 3 hours. Then, it was lightly scrubbed using the water and the filter sponge from the decorative surface which applied the coating material composition, and the coloring cement type cosmetic material was obtained.

  Thus, the "application condition" and "wipe condition" of the coating material composition in the process of obtaining the colored cement-based cosmetic material, and the "finishing condition" of the obtained colored cement-based cosmetic material were evaluated by the method described above. . The evaluation results of Test Example C are shown in the lower part of Table 3.

  From the results of Test Example C, also for the cement-based decorative material prepared in Test Example C, wiping condition and finish by a coating material composition containing 5 parts or more of an alkali metal silicate per 100 parts of the solid content of the resin emulsion. A pigmented cementitious cosmetic material having good condition was obtained. Therefore, the cement-based base material (mortar layer) is colored and color unevenness is maintained while maintaining the appearance of the decorative member (the beautiful aggregate) even with the cement-based decorative material prepared in Test Example C by the coating material composition. It has been found that it is possible to suppress

[Test Example D]
About the coating material composition 41 used by Experiment C6, the test (accelerated weather resistance test) which confirmed the weather resistance of the coating film by the coating material composition was done.

A cement-bonded material and a mixture prepared by mixing water are placed in a 45 mm x 150 mm x 12 mm mold frame as a cement-based substrate, and placed in a room at 20 ° C for 14 days or more. I used what I did. The cement binder comprises 28.5 parts of ordinary Portland cement gray, 71.5 parts of river sand (thin), 0.03 parts of water-soluble cellulose ether (trade name "Metroze 90 SH-4000"), and 11.1 parts of water The cement composition was used, 2 g (about 300 g / m ² ) of a paint composition 41 was brushed on a cement-based substrate, and after standing for 24 hours in a room at 20 ° C., water and a filter sponge were used. After that, it was used for evaluation after standing for 14 days in a room at 20 ° C. In addition, evaluations were also made for each of the above-mentioned curing temperatures of “20 ° C.” as “5 ° C.” Used for Furthermore, as a reference example D for comparison, a test was conducted in the same manner except using a commercially available paint (trade name "Paint Cleat", manufactured by Ashford Japan Co., Ltd.) instead of the paint composition. For the accelerated weathering test, a super accelerated weathering tester (trade name "Eye Super UV Tester SUV-W261" manufactured by Iwasaki Electric Co., Ltd.) was used. The conditions of the weathering test were: Irradiance: UV intensity 150 mW / cm ² (illuminometer: UVP-365-03), (1) Irradiation: 63 ° C./50% humidity for 6 hours, (2) Pause: 35 ° C. / A pure water shower was performed for 10 seconds before and after (2) at a humidity of 90% for 2 hours, and 20 cycles were performed with (1) and (2) as one cycle.

By visually confirming the degree of deterioration according to the above-mentioned accelerated weathering test, the weathering resistance was evaluated according to the following evaluation criteria, on a scale of 1 to 5 on a scale of five. The results of Test Example D are shown in Table 4.
5: The finish was uniform and beautiful as in the test, and the mortar layer remained colored.
4: First of all, a beautiful finish remained, and coloring remained in the mortar layer.
3: The coloring of the mortar layer disappeared in spots, and the coloring appeared pale.
2: The coloration of the mortar layer was thin overall.
1: The coloring of the mortar layer was almost lost.

  From the results of Test Example D, it was confirmed that a coating film having good weatherability can be obtained by the coating material composition.

[Test Example E]
Base adjustment coating material (brand name "cation tight F", Yabb so that it will be 7 mm of joint width 7 mm with 97 mm x 97 mm x 5 mm thick glazed porcelain tile on a slate flat plate (300 mm x 300 mm x 6 mm thickness) as a substrate It stuck using the original industry company make. The above base conditioning coating material (cation tight F) was prepared by mixing 100 parts of the main material (powder) and 22 parts of the hardening liquid, and using this on the back of the porcelain tile to a thickness of 2 mm. I painted it. The joints were finished using cement-based tile joint materials (trade name "Tyron for Pacific joint (for general use)", manufactured by Pacific Materials Co., Ltd.) in the joint portion of the space of the porcelain tile. The product was allowed to stand in a room at 20 ° C. for 7 days or more to obtain a cement-based decorative material having a joint material as a cement-based substrate and a decorative surface (tiled surface) on which porcelain tiles as a decorative member are exposed.

(Preparation of coating material composition)
Each component was mix | blended by the composition (unit: g) shown to the upper stage of postscript Table 5 (Table 5-1 and Table 5-2), and the coating material composition was prepared. In the middle part of the table, the coating amount (g / m ² ) of the coating material composition on the decorative surface of the cement-based cosmetic material, the emulsion solid content (g) in the coating material composition, and K ₂ O · nSiO ₂ The amount (g), as well as the content (parts) of K ₂ O · nSiO ₂ per 100 parts of emulsion solids are indicated. Moreover, the following potassium silicate solutions were used for the coating material composition. The other materials (silica sand, pigment, antifoaming agent, and emulsion A) were the same as those used in Test Example A.
· 1 K potassium silicate (appearance: colorless to slightly colored liquid, molar ratio: 1.8 to 2.2, K ₂ O nSiO ₂ content: 50.0%, manufactured by Nippon Chemical Industrial Co., Ltd.)
A potassium silicate (Appearance: colorless to slightly colored liquid, molar ratio: 2.9 to 3.2, K ₂ O nSiO ₂ content: 40.3%, manufactured by Nippon Chemical Industrial Co., Ltd.)

(Preparation of colored cement-based cosmetic material)
The prepared coating material composition was applied with a brush at a coating amount shown in the middle of Table 5 in the area including the joint portion of the decorative surface (the tiled surface) of the cement cosmetic material. At this time, the coating material composition was adhered to the edge portion on the joint side of the porcelain tile by about 10 mm in width. It was left as it is in a room at 20 ° C. for 3 hours. Then, it was lightly scrubbed using water and a filter sponge from the area | region containing the joint part of the tile-finishing surface which applied the coating material composition, and the coloring cement-type cosmetics were obtained.

  Thus, the "application condition" and "wipe condition" of the coating material composition in the process of obtaining the colored cement-based cosmetic material, and the "finishing condition" of the obtained colored cement-based cosmetic material were evaluated by the method described above. . The evaluation results of Test Example E are shown in the lower part of Table 5.

  From the results of Test Example E, the wiping condition and the finishing condition are also obtained when using a coating material composition that uses a tiled finish surface as a decorative surface of cementitious cosmetic material and contains potassium silicate as an alkali metal silicate. Both good colored cement-based cosmetic materials were obtained. Therefore, it was recognized that it is possible to color a cement-based substrate (joint portion) and suppress color unevenness while maintaining the appearance of the decorative member (porcelain tile) by the coating material composition.

Reference Signs List 1 base 10 coating material composition 11, 21 cosmetic material main body 11a finished surface of cosmetic aggregate layer 21a tiled finished surface 12, 22 cement base material 22a joint 14 beautiful aggregate 24 tile 100 coated film 110 colored cement based cosmetic material 210 Colored cement-based cosmetic

Claims (9)

The surface of the cement-based substrate and the surface of the beautiful aggregate in a decorative aggregate layer having a finished surface in which a cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface a shall be used is applied to the finished surface, including, among the finished surface, that easily secured the compared to the surface of the beautiful aggregate towards the surface of the cement substrate, the beautiful bone a coating material composition for coloring the cement substrate while maintaining the appearance of the wood,
The coating material composition includes a coloring material, a resin emulsion, and an alkali metal silicate,
The alkali metal silicate includes sodium metasilicate,
The coating material composition whose content of the said sodium metasilicate is 5-250 mass parts per 100 mass parts of solid content of the said resin emulsion. The surface of the cement-based substrate and the surface of the beautiful aggregate in a decorative aggregate layer having a finished surface in which a cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface a shall be used is applied to the finished surface, including, among the finished surface, that easily secured the compared to the surface of the beautiful aggregate towards the surface of the cement substrate, the beautiful bone a coating material composition for coloring the cement substrate while maintaining the appearance of the wood,
The coating material composition includes a coloring material, a resin emulsion, and an alkali metal silicate,
The alkali metal silicate comprises powdered sodium silicate,
The coating material composition whose content of the said powdery sodium silicate is 25-950 mass parts per 100 mass parts of solid content of the said resin emulsion. The surface of the cement-based substrate and the surface of the beautiful aggregate in a decorative aggregate layer having a finished surface in which a cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface a shall be used is applied to the finished surface, including, among the finished surface, that easily secured the compared to the surface of the beautiful aggregate towards the surface of the cement substrate, the beautiful bone a coating material composition for coloring the cement substrate while maintaining the appearance of the wood,
The coating material composition includes a coloring material, a resin emulsion, and an alkali metal silicate,
The alkali metal silicate contains potassium silicate,
The coating material composition whose content of the said potassium silicate is 50-540 mass parts per 100 mass parts of solid content of the said resin emulsion. A powdery composition containing at least silica sand,
A liquid composition containing at least the resin emulsion;
The coating material composition according to any one of claims 1 to 3, wherein the alkali metal silicate is contained in at least one of the powdery composition and the liquid composition.   The coating material composition according to any one of claims 1 to 4, wherein the resin emulsion contains an acrylic resin emulsion. The surface of the cement-based substrate and the surface of the beautiful aggregate in a decorative aggregate layer having a finished surface in which a cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface Applying a coating material composition that is more likely to adhere to the surface of the cement-based substrate than the surface of the beautiful aggregate among the finished surface , on the finished surface including ;
The cement system in the finished surface while washing the coated material composition adhering to the surface of the beautiful aggregate in the finished surface to which the coated material composition is applied to maintain the appearance of the beautiful aggregate Coloring the substrate;
The coating material composition contains a coloring material, a resin emulsion, and an alkali metal silicate, and the alkali metal silicate contains sodium metasilicate, and the content of the sodium metasilicate is 100% of the solid content of the resin emulsion. The manufacturing method of a coloring cement type cosmetic material which is 5-250 mass parts per mass part. The surface of the cement-based substrate and the surface of the beautiful aggregate in a decorative aggregate layer having a finished surface in which a cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface Applying a coating material composition that is more likely to adhere to the surface of the cement-based substrate than the surface of the beautiful aggregate among the finished surface , on the finished surface including ;
The cement system in the finished surface while washing the coated material composition adhering to the surface of the beautiful aggregate in the finished surface to which the coated material composition is applied to maintain the appearance of the beautiful aggregate Coloring the substrate;
The coating material composition contains a coloring material, a resin emulsion, and an alkali metal silicate, and the alkali metal silicate contains powdery sodium silicate, and the content of the powdery sodium silicate is 100% of the solid content of the resin emulsion. The manufacturing method of a coloring cement type cosmetic material which is 25-950 mass parts per mass part. The surface of the cement-based substrate and the surface of the beautiful aggregate in a decorative aggregate layer having a finished surface in which a cement-based substrate and a large number of beautiful aggregates fixed by the cement-based substrate are exposed on the surface Applying a coating material composition that is more likely to adhere to the surface of the cement-based substrate than the surface of the beautiful aggregate among the finished surface , on the finished surface including ;
The cement system in the finished surface while washing the coated material composition adhering to the surface of the beautiful aggregate in the finished surface to which the coated material composition is applied to maintain the appearance of the beautiful aggregate Coloring the substrate;
The coating material composition contains a coloring material, a resin emulsion, and an alkali metal silicate, and the alkali metal silicate contains potassium silicate, and the content of the potassium silicate is 100 parts by mass of the solid content of the resin emulsion. The manufacturing method of a coloring cement type cosmetic material which is 50-540 mass parts per. The method for producing a colored cementitious cosmetic material according to any one of claims 6 to 8 , further comprising the step of producing the cosmetic aggregate layer having the finished surface before the step of applying the coating material composition. .

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