JP6315903B2 - Method for forming decorative wall surface - Google Patents

Description

  The present invention relates to a method for forming a decorative wall surface in a building, a civil engineering structure, or the like.

Conventionally, a decorative film having a three-dimensional uneven pattern is formed on a wall surface of a building, a civil engineering structure, or the like. As one type of such a decorative film, there is one provided with an uneven pattern by joints.
For example, Patent Document 1 describes a method in which a joint material is applied to a surface to be coated, a spray material is applied, and then the joint material is removed to form an uneven pattern by the joint. Patent Document 2 describes that a pattern is further applied to a convex region of a concavo-convex pattern divided by joints by a pattern pressing tool.

However, if the wall surface having such a decorative film is exposed to the outdoors for a long time, it may be contaminated by the influence of rainfall, dust, etc., and the aesthetics of the corner may be impaired. In particular, joints that become concave and convex portions tend to be contaminated. If contaminants accumulate in such joints, there is a risk of fouling the decorative coating.
In addition, if the joint material is not removed well and clear irregularities are not obtained, not only the initial aesthetics are impaired, but also there is a risk that the joints are more likely to accumulate contamination.

Japanese Patent Laid-Open No. 10-266517 Japanese Patent Application Laid-Open No. 8-3333861

  The present invention has been made in view of the above-described problems, and suppresses the progress of contamination in a decorative wall surface having a decorative coating provided with unevenness by joints, and maintains the initial aesthetics for a long period of time. It is for the purpose.

  As a result of intensive studies to achieve the above object, the present inventor has conceived that a colored film (A), a specific pattern film (B), and a specific transparent film (C) are provided. It came to complete.

That is, the present invention has the following characteristics.
1. (1) A step of applying a coating material A to a base material to form a colored film (A);
(2) a step of attaching a joint material to the surface of the colored coating (A);
(3) A step of applying the coating material B to the surface obtained in the above (2) to form a pattern film (B),
(4) removing the joint material,
(5) A step of applying a covering material C to the surface obtained in (4) above to form a transparent film (C),
By the above, a method for forming a decorative wall surface in which a colored coating (A), a patterned coating (B) partitioned by joints, and a transparent coating (C) are sequentially provided on a substrate,
The covering material A includes a resin component and a granular material,
The coating material B is obtained by dispersing liquid or gel colored resin particles in a dispersion medium containing a resin component,
The coating material C includes silica having an average primary particle diameter of 1 to 200 nm, and a resin component,
The granular powder in the coating material A is:
(I) Infrared reflective granular material,
(II) Infrared reflective powder and infrared transmissive powder,
Ri Do not from any of the embodiments,
The infrared reflective powder particles are silicon oxide, magnesium oxide, zirconium oxide, yttrium oxide, indium oxide, alumina, iron-chromium composite oxide, manganese-bismuth composite oxide, manganese-yttrium composite oxide, black iron oxide. One or more selected from iron-manganese composite oxide, iron-copper-manganese composite oxide, iron-chromium-cobalt composite oxide, copper-chromium composite oxide, copper-manganese-chromium composite oxide A method for forming a decorative wall surface.
2. The coating material B contains a piperidine compound. The decorative wall surface described.
3. The coating material C includes silica having an average primary particle diameter of 1 to 200 nm and a resin component, and a solid content weight ratio between the silica and the resin component is 0.5: 1 to 5: 1. 1. Or 2. The method for forming a decorative wall surface according to claim 1.
4). The covering material A contains a piperidine compound. ~ 3. The method for forming a decorative wall surface according to any one of the above.
5. The coating material A includes a resin component to which a piperidine compound is bonded. ~ 4. The method for forming a decorative wall surface according to any one of the above.
6). The colored coating (A) has a lightness value L * value of 50 or less in the CIE color system. ~ 5. The method for forming a decorative wall surface according to any one of the above.
7.1. ~ 6. A decorative wall surface obtained by the method according to any one of the above.

  ADVANTAGE OF THE INVENTION According to this invention, in the makeup | decoration wall surface which has a decorative film by which the uneven | corrugated pattern by the joint was given, progress of contamination can be suppressed and the initial aesthetics can be maintained over a long period of time.

It is a figure which shows an example of the process of this invention.

1: Substrate 2: Colored coating (A)
3: Joint material 4: Pattern coating (B)
5: Transparent coating (C)

  Hereinafter, modes for carrying out the present invention will be described.

The decorative wall surface of the present invention is provided with a decorative film on a base material.
As a base material, it constitutes a wall surface of a building, a civil engineering structure, etc., for example, concrete, mortar, siding board, extruded board, gypsum board, perlite board, plywood, brick, plastic board, metal board, Examples include glass and porcelain tiles. The surface of these base materials may have been subjected to some surface treatment (for example, a sealer, a surfacer, a filler, a putty, etc.), and has already been provided with a film, or has been applied with wallpaper. Also good.

In the present invention, a colored coating (A), a patterned coating (B), and a transparent coating (C) are provided on the surface of the substrate as a decorative coating. An example is shown in FIG. Among these, the coating material A contains the granular material which consists of either aspect of (I) infrared reflective granular material, (II) infrared reflective granular material, and infrared rays transparent granular material. The coating material B is obtained by dispersing liquid or gel-like colored resin particles in a dispersion medium containing a resin component. The covering material C contains silica having an average primary particle diameter of 1 to 200 nm and a resin component.

  In the present invention, by laminating such a coating, it is possible to impart a concavo-convex pattern by joints, suppress the progress of contamination of the decorative coating, and maintain the initial aesthetics for a long time.

First, in this invention, the coating | covering material A contains the granular material which consists of either aspect of (I) infrared reflective granular material, (II) infrared reflective granular material, and infrared rays transparent granular material. Can improve the removability of the joint material, can form clear irregularities in the joint part, and the transparent coating (C) is formed as a uniform film in the joint part, so that the stable contamination progress suppressing effect in the joint part Can be demonstrated over a long period of time.

Although its action is not clear, in the present invention, the coating material A is composed of any one of (I) infrared reflective powder, (II) infrared reflective powder, and infrared transparent powder. By containing the granular material, the coating material B applied on the colored coating (A) is cured more quickly than necessary by suppressing the temperature rise of the colored coating (A), and the patterned coating (B). It can be considered that the removability of the joint material can be improved because the formation of sapphire can be suppressed.
Moreover, it can also prevent that the adhesiveness used for adhesion | attachment of a joint material or an adhesive increases more than necessary by suppressing the temperature rise of a colored film (A). By such an action, the removability of the joint material can be further enhanced.

Moreover, in this invention, since the coating material A contains the above granular material, since the temperature rise of a decorative wall surface is suppressed, progress of deterioration of a decorative wall surface can be suppressed, and a pattern film (C ) Can be maintained over a long period of time.

[Colored coating (A)]
The colored coating (A) is a coating that appears as a joint of the decorative coating of the present invention and expresses the joint color. Such a colored coating (A) is obtained by applying and drying a coating material A containing a resin component and a granular material.

  Examples of the resin component in the covering material A include acrylic resin, urethane resin, vinyl acetate resin, silicon resin, fluorine resin, acrylic vinyl acetate resin, acrylic urethane resin, acrylic silicon resin, and the like. More than species can be used. Among these, acrylic resin, acrylic silicon resin, and the like are preferable.

The granular material component in the coating material A is composed of any one of (I) an infrared reflective granular material, (II) an infrared reflective granular material, and an infrared transmitting granular material.

  Examples of the infrared reflective particles in the aspect (I) include aluminum flakes, titanium oxide, barium sulfate, zinc oxide, iron oxide, calcium carbonate, silicon oxide, magnesium oxide, zirconium oxide, yttrium oxide, indium oxide, Alumina, iron-chromium composite oxide, manganese-bismuth composite oxide, manganese-yttrium composite oxide, black iron oxide, iron-manganese composite oxide, iron-copper-manganese composite oxide, iron-chromium-cobalt composite oxide Products, copper-chromium composite oxide, copper-manganese-chromium composite oxide, and the like, and one or more of these can be used. As such an infrared reflective granular material, for example, a pulverized natural stone having the above composition or a synthetic product can be used.

In the aspect of (I), the composite of the said infrared reflective powder granular material can also be used. Here, the composite is a composite of one or more of the infrared reflective powder particles by means of aggregation, fixation, coating, or the like.

As the infrared reflective powder particles in the aspect (II), the same ones as in the above (I) can be used.
Examples of the infrared transparent powder particles in the embodiment (II) include perylene pigments, azo pigments, chrome lead, titanium red, cadmium red, quinacridone red, isoindolinone, benzimidazolone, phthalocyanine green, phthalocyanine blue, and cobalt blue. Induslen blue, ultramarine blue, bitumen and the like, and one or more of these can be used.

In the aspect of (II), 1 type (s) or 2 or more types of the said infrared reflective granular material and infrared rays transparent granular material are used together. Moreover, these composites can also be used. Here, the composite is a composite of one or more of the infrared reflective powder and infrared transparent powder by means of aggregation, fixation, coating, and the like.

  The average particle diameter of the granular material in the coating material A is preferably 0.02 μm or more and 2000 μm or less, more preferably 0.1 μm or more and 1000 μm or less, and further preferably 0.2 μm or more and 500 μm or less. The average particle diameter can be measured by performing sieving using a metal mesh sieve defined in JIS Z8801-1: 2000.

  The granular material in the covering material A is substantially composed of any one of the modes (I) and (II), but within the range not impairing the effect of the present invention, the granular material other than the above May be included. However, for infrared absorbing particles such as carbon black, it is preferably 1% by weight or less, more preferably 0.5% by weight or less, including infrared absorbing particles, with respect to the total amount of the particles. None of the embodiments is most preferred.

In the present invention, by using these powder particles for the coating material A, it is possible to express various colors while imparting infrared reflection performance to the colored coating (A).
At this time, if the color tone of the colored coating (A) is set to a hue (co-color) that approximates the pattern coating (B) described later, the overall finish is uniform.
Further, if the color tone of the colored coating (A) is set to a hue different from that of the pattern coating (B), the contrast between the joint color and the pattern coating (B) becomes a clear finish.

The effect of the present application is particularly prominent when the colored coating (A) has a lightness value L ^* value of 50 or less in the CIE color system. When a normal film shows such a lightness value, the temperature of the film may increase significantly, but the colored film A of the present invention can suppress this temperature increase. If the lightness value L ^* value of the CIE color system of the colored coating (A) is 50 or less and the brightness difference between the colored coating (A) and the patterned coating (B) is 30 or more (more preferably 40 or more) Since the contrast between the joint color and the pattern coating (B) becomes clearer, it is preferable.

  The mixing ratio of the granular material in the coating material A is preferably 10 to 1000 parts by weight, more preferably 50 to 800 parts by weight, and further preferably 100 to 600 parts by weight with respect to 100 parts by weight of the solid content of the resin solids. is there.

The covering material A preferably contains a piperidine compound.
In the present invention, the adhesion between the colored coating (A) and the transparent coating (C) is maintained for a long time by the action of the piperidine compound in the coating material A.
The piperidine compound in the coating material A can exhibit its performance for a long period of time due to the protective effect of the transparent coating (C). As the piperidine compound in the coating material A, a compound having a piperidyl group can be used. As a form of this piperidine compound,
A) Form existing as a component different from the resin component, and / or
B) A chemically bonded form in the resin component
Is mentioned. In the present invention, it is particularly preferable to combine the above a) and b).

In the form a), a non-polymerizable piperidine compound can be used. Specifically, examples of such a compound include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate and bis (1,2,2,6,6-pentamethyl-4-piperidyl). Sebacate, 2- (3,5-di-t-butyl-4-hydroxybenzyl) -2-n-butylmalonate bis (1,2,2,6,6-pentamethyl-4-piperidyl), tetrakis (2 , 2,6,6-tetramethyl-4-piperidyl) -1,2,3,4-butanetetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) -1,2 , 3,4-Butanetetracarboxylate, methyl (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, N, N ′, N ″, N ″ ′-tetrakis- (4,6-bis (Butyl- (N-Me -2,2,6,6-tetramethylpiperidin-4-yl) amino) -triazin-2-yl) -4,7-diazadecane-1,10-diamine, N, N'-bis- (2, 2,6,6-tetramethyl-4-piperidyl-1,6-hexamethylenediamine, N- (2,2,6,6-tetramethyl-4-piperidyl) butylamine, 4-hydroxy-2,2,6 , 6-Tetramethyl-1-piperidineethanol, decanedioic acid bis (2,2,6,6-tetramethyl-1 (octyloxy) -4-piperidyl) ester, 4-benzoyloxy-2,2,6, 6-tetramethylpiperidine, 2,4-bis [N-butyl-N- (1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl) amino] -6- (2-hydroxyethyl A Emissions) -1,3,5-triazine, and derivatives thereof. These may be used alone or in combination of two or more.

  In the form of a), it is preferable to contain 0.01 to 20 parts by weight of the piperidine compound, more preferably 0.1 to 15 parts by weight, and still more preferably 0.5 to 100 parts by weight of the solid content of the resin component. -10 parts by weight. Such a ratio is preferable in terms of manifesting the effects of the present invention.

  In the form (a), since the piperidine compound is chemically bonded to the resin component, a polymerizable piperidine compound can be used. As such a compound, a compound having a piperidyl group and a polymerizable unsaturated double bond can be used. For example, 4- (meth) acryloyloxy-2,2,6,6-tetramethylpiperidine, 4- (meta ) Acryloyloxy-1,2,2,6,6-pentamethylpiperidine, 4- (meth) acryloylamino-2,2,6,6-tetramethylpiperidine, 4- (meth) acryloylamino-1,2, 2,6,6-pentamethylpiperidine, 4-cyano-4- (meth) acryloyloxy-2,2,6,6-tetramethylpiperidine, 4- (meth) acryloyloxy-1-methylcarbamoyloxy-2, 2,6,6-tetramethylpiperidine, 1- (meth) acryloyl-4- (meth) acryloylamino-2,2,6,6-tetramethylpipe Gin, 1- (meth) acryloyl-4-cyano-4- (meth) acryloylamino-2,2,6,6-tetramethylpiperidine, 4-crotonoyloxy-2,2,6,6-tetramethylpiperidine 4-crotonoylamino-2,2,6,6-tetramethylpiperidine, 1-crotonoyl-4-crotonyloxy-2,2,6,6-tetramethylpiperidine and the like. These can be used alone or in combination of two or more.

  Such polymerizable piperidine compounds can be chemically bonded to the resin component by copolymerizing with other monomers during the production of the resin component (at the time of polymerization). The ratio of the piperidine compound in the resin component is preferably 0.01 to 20% by weight, more preferably 0.1 to 15% by weight. Such a ratio is preferable in terms of manifesting the effects of the present invention.

The coating material A may contain various components other than the above components as long as the effects of the present invention are not significantly impaired. Examples of such components include matting agents, aggregates, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreezing agents, pH adjusting agents, antiseptics, antifungal agents, Examples include algal agents, antibacterial agents, dispersants, antifoaming agents, adsorbents, fibers, crosslinking agents, ultraviolet absorbers, antioxidants, and catalysts.

[Pattern film (B)]
The pattern coating (B) is obtained by applying and drying a coating material (hereinafter also referred to as “coating material B”) in which liquid resin or gel-like colored resin particles (b1) are dispersed in a dispersion medium containing a resin component. Can be formed. In such a coating material B, the resin component in the dispersion medium forms a transparent film (b2), and the colored resin particles (b1) are dried and fixed to the transparent film (b2). In the present invention, a granular pattern film (B) having a desired hue is efficiently formed by one coating by using the coating material B containing one or more kinds of colored resin particles (b1). can do.

As the colored resin particles (b1), those containing a resin component and a colored pigment can be used.
Examples of the resin component in the colored resin particles (b1) include polyvinyl alcohol, poly (meth) acrylic acid, polyethylene oxide, water-soluble urethane, biogum, galactomannan derivatives, alginic acid or derivatives thereof, cellulose derivatives, gelatin, casein, and albumin. Etc. or those chemically modified by oxidation, methylation, carboxymethylation, hydroxyethylation, hydroxypropylation, sulfation, phosphorylation, cationization, etc., acrylic resin, urethane resin, vinyl acetate resin, silicon resin, A fluororesin, an acrylic vinyl acetate resin, an acrylic urethane resin, an acrylic silicon resin, etc. are mentioned, These 1 type (s) or 2 or more types can be used. Such a resin component is preferably a water-soluble resin and / or a water-dispersible resin.

Examples of color pigments include titanium oxide, zinc oxide, alumina, carbon black, ferric oxide (valve), yellow iron oxide, iron oxide, ultramarine, cobalt green, and other inorganic color pigments, azo-based, naphthol-based, Examples thereof include organic color pigments such as pyrazolone, anthraquinone, perylene, quinacridone, disazo, isoindolinone, benzimidazole, phthalocyanine, and quinophthalone, pearl pigments, aluminum pigments, and fluorescent pigments. The colored resin particles (b1) can be prepared in a desired color tone by combining one or more of such colored pigments.
In the present invention, it is also preferable to use infrared reflective powder as the color pigment. The infrared reflective powder may be the same as the coating material A.
In the colored resin particles (b1), an extender pigment can be used in addition to such a colored pigment.

The particle diameter of the colored resin particles (b1) is not particularly limited, but is preferably 0.1 to 20 mm, more preferably 0.5 to 10 mm.
As the colored resin particles (b1), those containing 0.01 to 200 parts by weight of color pigment are preferable and more preferably those containing 0.1 to 100 parts by weight with respect to 100 parts by weight of the solid content of the resin component.

The colored resin particles (b1) described above are fixed to the transparent coating (b2). This transparent coating (b2) contains a resin component in order to fix the colored resin particles (b1) described above.
Examples of such a resin component include acrylic resin, urethane resin, vinyl acetate resin, silicon resin, fluorine resin, acrylic vinyl acetate resin, acrylic urethane resin, acrylic silicon resin, and the like. The above can be used. Such a resin component is preferably a water-soluble resin and / or a water-dispersible resin.

The transparent coating (b2) preferably contains a piperidine compound.
As the piperidine compound in the transparent coating (b2), a compound having a piperidyl group can be used, and the same compounds as in the above (A) can be used. As the form of this piperidine compound, as in the above (A),
A) Form existing as a component different from the resin component, that is, a form containing the resin component and the piperidine compound in the dispersion medium,
And / or
B) A form chemically bound to the resin component, that is, a form containing a resin component to which a piperidine compound is bound as the resin component in the dispersion medium. In the present invention, it is particularly preferable to combine the above a) and b).

In the form a), a non-polymerizable piperidine compound can be used. Specifically, examples of such a compound include those exemplified for the colored coating (A). These can be used alone or in combination of two or more.

  In the form of the above a), it is preferable to contain 0.01 to 50 parts by weight of the piperidine compound, more preferably 0.1 to 30 parts by weight, and still more preferably 0.5 to 100 parts by weight of the solid content of the resin component. ~ 20 parts by weight. Such a ratio is preferable in terms of manifesting the effects of the present invention.

  In the form (a), since the piperidine compound is chemically bonded to the resin component, a polymerizable piperidine compound can be used. As such a compound, a compound having a piperidyl group and a polymerizable unsaturated double bond can be used, and examples thereof include those exemplified for the colored coating (A). These can be used alone or in combination of two or more.

  Such a polymerizable piperidine compound can be chemically bonded to the resin component by copolymerizing with other monomers at the time of production (polymerization) of the resin component by a known method. The ratio of the piperidine compound in the resin component is preferably 0.01 to 20% by weight, more preferably 0.1 to 15% by weight. Such a ratio is preferable in terms of manifesting the effects of the present invention.

  The pattern coating (B) may be in any form as long as the colored resin particles (b1) are dispersed in the transparent coating (b2), but the colored resin particles (b1) having two or more colors (more preferably three to eight colors). ) Are dispersed in the transparent coating (b2). Such a pattern coating (B) can be formed by applying and drying a coating material B containing colored resin particles (b1) of two or more colors (preferably three to eight colors). The solid content weight ratio between the colored resin particles (b1) and the transparent coating (b2) in such a patterned coating (B) is preferably 0.1: 1 to 5: 1, more preferably 0.3: 1. 3: 1. If it is such a form, aesthetics can be improved further.

This coating material B may contain various components other than the above components in the dispersion medium and / or colored resin particles as long as the effects of the present invention are not significantly impaired. Examples of such components include gelling agents, matting agents, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreezing agents, pH adjusting agents, antiseptics, antifungal agents, Algae-proofing agents, antibacterial agents, dispersants, antifoaming agents, adsorbents, fibers, cross-linking agents, ultraviolet absorbers, antioxidants, catalysts, etc. The colored resin particles may contain a piperidine compound.

In the coating material B, it is desirable that the colored resin particles (b1) have a flat shape. In such an embodiment, a large pattern can be formed while the pattern coating (B) is relatively thin and lightweight. In order to obtain a patterned coating (B) having flat colored resin particles, for example,
A method of coating the coating material B in which flat colored resin particles are dispersed in advance.
-A method of flattening colored resin particles by the pressure during coating.
-A method of making colored resin particles flat by applying pressure after coating.
Or the like.

  In addition, the flat shape said here means the state where the ratio of the minor axis to the thickness is larger than 2. The short diameter and long diameter of the flat colored resin particles are not particularly limited, but may be preferably about 0.1 to 20 mm (more preferably 0.5 to 10 mm). In the present invention, the range of design properties can be expanded by variously combining flat colored resin particles having different particle diameters.

[Transparent film (C)]
The transparent film (C) in the present invention is provided on the outermost surface of the decorative film. This transparent film (C) contains silica having an average primary particle diameter of 1 to 200 nm and a resin component.

Among these, silica exhibits a superior anti-contamination effect due to the high hardness of the particles themselves and the fact that they have many silanol groups on the surface of the particles.
The average primary particle diameter of silica is usually 1 to 200 nm, preferably 3 to 100 nm. Within this range, a plurality of silicas having different average primary particle sizes can be used in combination. When the average primary particle diameter of silica is larger than 200 nm, the specific surface area becomes small, and silanol groups are also reduced, so that the antifouling property becomes insufficient. When the average primary particle diameter is smaller than 1 nm, the silica itself becomes unstable, so it is not practical. In addition, the average primary particle diameter said here is a value measured by the light-scattering method.

The silica of the transparent coating (C) is preferably derived from a silica sol, and further derived from a water-dispersible silica sol having a pH of 5.0 or more and less than 8.5 (preferably 6.0 or more and 8.0 or less). Is more preferred.
Such a neutral type water-dispersible silica sol can be produced using a silicate compound as a raw material. Examples of the silicate compound include tetramethoxysilane, tetraethoxysilane, tetra n-propoxysilane, tetraisopropoxysilane, tetra n-butoxysilane, tetraisobutoxysilane, tetra sec-butoxysilane, tetra t-butoxysilane, tetra Examples thereof include phenoxysilane and the condensates thereof. In addition, alkoxysilane compounds other than the above silicate compounds, alcohols, glycols, glycol ethers, fluorine alcohols, silane coupling agents, polyoxyalkylene group-containing compounds, and the like can also be used.

  Various resins can be used as the resin component in the transparent coating (C). Specifically, for example, acrylic resin, urethane resin, vinyl acetate resin, silicon resin, fluororesin, acrylic vinyl acetate resin, acrylic urethane resin, acrylic silicon resin, and the like, one or more of these are used. it can. Such a resin component is preferably a water-soluble resin and / or a water-dispersible resin.

  The solid content weight ratio (silica: resin component) of silica and resin component in the transparent coating (C) is preferably 0.5: 1 to 5: 1, more preferably 0.8: 1 to 4: 1, Preferably it is 1: 1-3: 1. If it is such ratio, sufficient effect will be acquired in the pollution prevention effect and adhesiveness with a lower layer film, and the effect of the present invention will be exhibited stably.

  The transparent film (C) can be formed by applying and drying a coating material containing the above components (hereinafter also referred to as “coating material C”). The covering material C may contain various components other than the above components as long as the effects of the present invention are not significantly impaired. Such components include, for example, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreeze agents, pH adjusters, antiseptics, antifungal agents, antialgae agents, antibacterial agents, dispersions Agents, antifoaming agents, crosslinking agents, ultraviolet absorbers, antioxidants and the like. However, it is desirable to avoid the use of a photocatalytic substance because it may cause a decrease in adhesiveness over time and discoloration of the pattern film.

[Method of forming decorative wall surface]
The decorative wall surface of the present invention is obtained by sequentially providing a colored coating (A), a patterned coating (B) partitioned by joints, and a transparent coating (C) on a substrate. Such a decorative wall surface can be formed, for example, by the following process as shown in FIG.
(1) A step of applying a coating material A to a base material to form a colored film (A);
(2) A step of attaching a joint material to the surface of the colored coating (A),
(3) A step of applying the coating material B to the surface obtained in (2) above,
(4) a step of detaching part or all of the joint material;
(5) The process of applying the coating material C on the surface obtained in (4) above

In the said process (1), when apply | coating the coating | covering material A with respect to a base material, well-known coating instruments, such as a brush, a roller, and a spray, can be used, for example. The coating amount of the coating material A is preferably about 0.05 to ² kg / m ^{2 in} terms of solid content.

  As the joint material in the step (2), joint rods, joint tapes, inset joint materials, joint pattern papers and the like can be used. Examples of the material for the joint material include various resins, rubbers, resin foams, papers, and the like. Although the timing which affixes such a joint material on the surface of a colored film (A) is not specifically limited, After the colored film (A) dries, it is preferable. Moreover, an adhesive agent, an adhesive, etc. can be used for sticking a joint material as needed.

  What is necessary is just to determine the position, space | interval, etc. which paste a joint material according to a desired joint pattern. For example, it can be affixed at equal intervals or can be affixed randomly. Examples of patterns include tile-like patterns, brick-like patterns, geometric patterns, polka dot patterns, striped patterns, lattice patterns, swirl patterns, heraldic patterns, as well as graphic patterns designed for animals, plants, objects, characters, etc. Is possible. In order to express these patterns, a plurality of linear joint materials may be used in combination, or a flat pattern paper punched according to the pattern shape may be used as the joint material. The width of the joint material is preferably about 0.5 to 100 mm, and the height of the joint material is preferably about 0.5 to 10 mm.

In the decorative wall surface of the present invention, (2) a covering material D containing a resin component, a pigment, and / or an aggregate as (2 ′) after the step of attaching a joint material to the surface of the colored coating (A). You may provide the intermediate film D by apply | coating. What is necessary is just to select the coating method suitably, when apply | coating the coating | covering material D. FIG. As the coating device, for example, a known coating device such as a brush, a roller, or a spray can be used. The coating amount of the coating material D is preferably about 0.1 to 5.0 kg / m ^{2 in} terms of solid content.
In the present invention, by providing such an intermediate coating (D), it is possible to color the entire convex surface area of the concavo-convex pattern separated by joints. In addition, by appropriately setting the coating method, it is possible to further form a concavo-convex pattern in the convex region, and to further improve the aesthetics of the decorative wall surface.

In the step (3), when the coating material B is applied, a coating method may be selected as appropriate. As the coating device, for example, a known coating device such as a brush, a roller, or a spray can be used.
The coating amount of the coating material B is preferably about ²⁰ to 500 g / m ^{2 in} terms of solid content.

In the above step (4), the timing for detaching the joint material is not particularly limited as long as a desired joint can be formed, and the coating material B may be in an uncured state or in a cured state. .
In addition, when using joint rods, joint tapes, etc. as joint materials, all of the joint materials may be removed, and when fitting type joint materials are used as joint materials, a part of the joint materials may be removed. Good.

In the step (5), the covering material C may be applied to the entire surface. As a result, a transparent coating (C) is formed on the colored coating (A) at the joint, and a decorative coating in which the pattern coating (B) and the transparent coating (C) are laminated on the colored coating (A) in the other regions. can get.
As a coating instrument, well-known things, such as a brush, a roller, and a spray, can be used, for example. Coating with the amount of the coating material for forming the transparent film (C) is a solid basis, and preferably from 0.1 to 50 g / ^{m 2,} more preferably 0.5 to 20 g / ^{m 2.}

  Examples are given below to clarify the features of the present invention.

  As the covering material A, the following materials were prepared.

○ Coating material A1
Acrylic resin 1 {emulsion polymer of acrylic monomer and polymerizable piperidine compound, polymerizable piperidine compound: 4-methacryloyloxy-2,2,6,6-tetramethylpiperidine (0.8% by weight in resin component), glass Transition temperature 2 ° C., solid content 50 wt%} For 200 parts by weight, calcium carbonate 240 parts by weight, manganese bismuth composite oxide 20 parts by weight, film-forming aid 6 parts by weight, viscosity modifier 3 parts by weight, antifoaming agent 2 parts by weight and 80 parts by weight of water were uniformly mixed by a conventional method.
The coating material A1 is applied to the coated paper using a film applicator (gap 0.15 mm) and dried in a standard state (temperature 23 ° C., relative humidity 50%) for 48 hours. As a result of measuring the ^* value with a spectrophotometer, L ^* = 15.

○ Coating material A2
Acrylic resin 2 {Emulsion polymer of acrylic monomer and polymerizable piperidine compound, polymerizable piperidine compound: 4-methacryloyloxy-1,2,2,6,6-pentamethylpiperidine (0.8% by weight in resin component) , With respect to 200 parts by weight of glass transition temperature 2 ° C., solid content 50% by weight}, 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, 6 parts by weight of film-forming aid, 3 parts by weight of viscosity modifier, 2 parts by weight of foaming agent and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A3
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) 2 parts by weight of sebacate), 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 2 parts by weight of an antifoaming agent, and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A4
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, piperidine compound (bis (2,2,6,6-tetramethyl-1-decanedioate) (Octyloxy) -4-piperidinyl) ester compound) 2 parts by weight, film forming aid 6 parts by weight, viscosity modifier 3 parts by weight, antifoaming agent 2 parts by weight, and water 80 parts by weight were uniformly mixed by a conventional method. . As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A5
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, 20 parts by weight of phthalocyanine blue, piperidine compound (bis (1,2,2,6,6- 2 parts by weight of pentamethyl-4-piperidyl) sebacate), 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 2 parts by weight of an antifoaming agent, and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 13.

○ Coating material A6
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) 1 part by weight of sebacate), 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 1 part by weight of an antifoaming agent and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A7
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) 4 parts by weight of sebacate), 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 1 part by weight of an antifoaming agent, and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A8
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) Sebacate) 8 parts by weight, 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 1 part by weight of an antifoaming agent, and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A9
Acrylic resin 3 {emulsion polymer of acrylic monomer and polymerizable piperidine compound, polymerizable piperidine compound: 4-methacryloyloxy-2,2,6,6-tetramethylpiperidine (2.0% by weight in resin component), glass Transition temperature 2 ° C., solid content 50 wt%} 200 parts by weight of calcium carbonate 240 parts by weight, manganese bismuth composite oxide 20 parts by weight, piperidine compound (bis (1,2,2,6,6-pentamethyl-4 -Piperidyl) sebacate) 2 parts by weight, film forming aid 6 parts by weight, viscosity modifier 3 parts by weight, antifoaming agent 2 parts by weight, water 80 parts by weight were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A10
Acrylic resin 4 {Emulsion polymer of acrylic monomer and polymerizable piperidine compound, polymerizable piperidine compound: 4-methacryloyloxy-2,2,6,6-tetramethylpiperidine (4.0% by weight in resin component), glass Transition temperature 2 ° C., solid content 50 wt%} 200 parts by weight of calcium carbonate 240 parts by weight, manganese bismuth composite oxide 20 parts by weight, piperidine compound (bis (1,2,2,6,6-pentamethyl-4 -Piperidyl) sebacate) 2 parts by weight, film forming aid 6 parts by weight, viscosity modifier 3 parts by weight, antifoaming agent 2 parts by weight, water 80 parts by weight were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A11
Acrylic resin 5 {Emulsion polymer of acrylic monomer (not including polymerizable piperidine compound), glass transition temperature 2 ° C, solid content 50% by weight} 200 parts by weight 240 parts by weight of calcium carbonate, manganese bismuth composite oxide 20 parts by weight, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate) 2 parts by weight, film-forming aid 6 parts by weight, viscosity modifier 3 parts by weight, antifoaming agent 2 Part by weight and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A12
240 parts by weight of calcium carbonate, 20 parts by weight of manganese bismuth composite oxide, 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 2 parts by weight of an antifoaming agent with respect to 200 parts by weight of the acrylic resin 5 (same as above) Then, 80 parts by weight of water was uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 15.

○ Coating material A13
200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of iron-chromium composite oxide, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) 2 parts by weight of sebacate), 6 parts by weight of a film-forming aid, 3 parts by weight of a viscosity modifier, 2 parts by weight of an antifoaming agent, and 80 parts by weight of water were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 17.

○ Coating material A14
For 200 parts by weight of acrylic resin 1 (same as above), 240 parts by weight of calcium carbonate, 20 parts by weight of carbon black, 6 parts by weight of film-forming aid, 3 parts by weight of viscosity modifier, 2 parts by weight of antifoaming agent, 80 parts of water The parts by weight were uniformly mixed by a conventional method. As a result of measuring the lightness value L ^* value of the colored coating film by the same method as the coating material A1, L ^* = 18.

  As the coating material B, the following materials were prepared.

○ Coating material B1
The following three kinds of colored resin particles are an aqueous dispersion medium 1 {acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)] and an aqueous dispersion mainly composed of water. Medium. 3 parts by weight of piperidine compound is contained per 100 parts by weight of the solid content of the resin component. } Was produced. This aqueous dispersion medium 1 forms a transparent film, and the solid content weight ratio between the colored resin particles and the aqueous dispersion medium 1 is 1.5: 1.
The colored resin particles are flat black particles (acrylic resin emulsion, black iron oxide, yellow iron oxide, petal, titanium oxide, gel particles mainly composed of water. Resin component: colored pigment = 100: 15 (solid content Weight ratio), particle diameter of about 2 mm) and flat dark gray particles (gel particles mainly composed of acrylic resin emulsion, black iron oxide, titanium oxide and water. Resin component: Color pigment = 100: 21 (solid content) (Weight ratio), particle diameter of about 1 mm) and flat light gray particles (gel particles mainly composed of acrylic resin emulsion, black iron oxide, titanium oxide and water. Resin component: colored pigment = 100: 32 (solid content) Weight ratio), particle diameter of about 1 mm), and flat black particles: flat dark gray particles: flat light gray particles = 1: 1: 1 (solid content weight ratio).

○ Coating material B2
A coating material B2 was produced in the same manner as the coating material B1, except that the black iron oxide of the flat black particles constituting the colored resin particles was replaced with an iron-chromium composite oxide.

○ Coating material B3
Three kinds of colored resin particles similar to those of the coating material B1 were added to the aqueous dispersion medium 2 (acrylic resin emulsion, piperidine compound (bis (2,2,6,6-tetramethyl-1- (octyloxy) -4 decanodioate)). -Piperidinyl) ester compound), an aqueous dispersion medium containing water as a main component, and containing 3 parts by weight of a piperidine compound with respect to 100 parts by weight of the solid content of the resin component. The aqueous dispersion medium 2 forms a transparent film, and the solid content weight ratio between the colored resin particles and the aqueous dispersion medium 2 is 1.5: 1.

○ Coating material B4
Three kinds of colored resin particles similar to the coating material B1 are mainly composed of an aqueous dispersion medium 3 (acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)) and water. An aqueous dispersion medium as a component, containing 8 parts by weight of a piperidine compound with respect to 100 parts by weight of the solid content of the resin component. This aqueous dispersion medium 3 forms a transparent film, and the solid content weight ratio between the colored resin particles and the aqueous dispersion medium 3 is 1.5: 1.

○ Coating material B5
Three kinds of colored resin particles similar to the coating material B1 are mainly composed of an aqueous dispersion medium 4 (acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)) and water. An aqueous dispersion medium as a component. 13 parts by weight of a piperidine compound is contained per 100 parts by weight of the solid content of the resin component. The aqueous dispersion medium 4 forms a transparent film, and the solid content weight ratio between the colored resin particles and the aqueous dispersion medium 4 is 1.5: 1.

○ Coating material B6
Three kinds of colored resin particles similar to the coating material B1 are mainly composed of an aqueous dispersion medium 5 (acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)) and water. An aqueous dispersion medium as a component, which contains 18 parts by weight of a piperidine compound with respect to 100 parts by weight of the solid content of the resin component. The aqueous dispersion medium 5 forms a transparent film, and the solid content weight ratio between the colored resin particles and the aqueous dispersion medium 5 is 1.5: 1.

○ Coating material B7
A coating material B7 in which the same three types of colored resin particles as the coating material B1 were dispersed in an aqueous dispersion medium 6 (acrylic resin emulsion, aqueous dispersion medium containing water as a main component; does not contain a piperidine compound) was produced. The aqueous dispersion medium 6 forms a transparent film, and the solid content weight ratio between the colored resin particles and the aqueous dispersion medium 6 is 1.5: 1.

  As the covering material C, the following materials were prepared.

○ Clad material C1
Silica 1 (water-dispersible silica sol, pH 7.6, average primary particle size 27 nm): Acrylic silicone resin (methyl methacrylate-n-butyl acrylate-2-ethylhexyl acrylate-γ-methacryloyloxypropyltrimethoxysilane copolymer resin, glass transition (Temperature 18 ° C.) = 1.5: 1 (solid content weight ratio) aqueous dispersion.

○ Clad material C2
Silica 2 (water-dispersible silica sol, pH 7.5, average primary particle size 10 nm): acrylic silicon resin (methyl methacrylate-n-butyl acrylate-2-ethylhexyl acrylate-γ-methacryloyloxypropyltrimethoxysilane copolymer resin, glass transition (Temperature 18 ° C.) = 1.5: 1 (solid content weight ratio) aqueous dispersion.

○ Clad material C3
Silica 3 (water-dispersible silica sol, pH 7.8, average primary particle size 30 nm): acrylic silicon resin (methyl methacrylate-n-butyl acrylate-2-ethylhexyl acrylate-γ-methacryloyloxypropyltrimethoxysilane copolymer resin, glass transition (Temperature 18 ° C.) = 1.5: 1 (solid content weight ratio) aqueous dispersion.

○ Clad material C4
Silica 1 (water-dispersible silica sol, pH 7.6, average primary particle size 27 nm): Acrylic silicone resin (methyl methacrylate-n-butyl acrylate-2-ethylhexyl acrylate-γ-methacryloyloxypropyltrimethoxysilane copolymer resin, glass transition A temperature of 18 ° C.) = 0.7: 1 (solid weight ratio).

○ Clad material C5
Silica 1 (water-dispersible silica sol, pH 7.6, average primary particle size 27 nm): Acrylic silicone resin (methyl methacrylate-n-butyl acrylate-2-ethylhexyl acrylate-γ-methacryloyloxypropyltrimethoxysilane copolymer resin, glass transition A temperature of 18 ° C.) = 3.0: 1 (solid weight ratio) in water dispersion.

○ Clad material C6
An aqueous dispersion of acrylic silicon resin (methyl methacrylate-n-butyl acrylate-2-ethylhexyl acrylate-γ-methacryloyloxypropyltrimethoxysilane copolymer resin, glass transition temperature 18 ° C.).

(Test 1)
The coating material A is spray-coated on the slate plate at a coating amount of 0.8 kg / m ² (solid content), cured for 6 hours in a standard state (temperature 23 ° C., relative humidity 50%), and then a 250 W infrared lamp is used. When the colored coating A was heated by irradiation for 3 hours, a rod-shaped joint material (joint width 10 mm, height 5 mm, made of polyethylene) was attached in a lattice shape with an adhesive. Next, the coating material B was spray-coated at a coating amount of 300 g / m ² (solid content) while being irradiated with infrared rays, and further irradiated with infrared rays for 30 minutes, and then the rod-shaped joint material was removed.
The removability of the joint material at this time and the finish of the joint part were evaluated. The removability of the joint material was evaluated as “good” and “good” when the joint material was easily removed. The finish of the joint part was evaluated by ○, ○ and × when there was no abnormality in the appearance.
After curing for 1 day, the coating material C was spray-coated at a coating amount of 3 g / m ² (solid content) and cured for 7 days. The coating and curing at this time were performed under standard conditions (temperature 23 ° C., relative humidity 50%).

The test body obtained by the above method was immersed in a contaminant suspension (concentration 1% by weight) for 2 hours, pulled up and allowed to stand for 24 hours in a standard state, and then washed and dried. The contamination state at this time was evaluated visually.
Next, after exposing this test body for 1000 hours with an accelerated weathering tester (“Metal Weather Meter”, manufactured by Daipura Wintes Co., Ltd.), the contamination state by the pollutants was evaluated in the same manner as described above.
In the evaluation of the contamination state, “5” indicates that no contamination was observed, and “1” indicates that the contamination was remarkable (5>4>3>2> 1). I went there.
The test specimen was further exposed for 500 hours (a total of 1500 hours) with an accelerated weathering tester, and then the contamination state by the contaminant was evaluated by the same method as described above.

(Test results)
Table 1 shows the coating materials used in the above test and the test results. The contamination state is “after acceleration 1” after 1000 hours of irradiation and “after acceleration 2” after 1500 hours of irradiation. In Examples 1 to 23, the removability of the joint material, the finish of the joint part, and the evaluation of the stain resistance were good results.

Claims (7)

(1) A step of applying a coating material A to a base material to form a colored film (A);
(2) a step of attaching a joint material to the surface of the colored coating (A);
(3) A step of applying the coating material B to the surface obtained in the above (2) to form a pattern film (B),
(4) removing the joint material,
(5) A step of applying a covering material C to the surface obtained in (4) above to form a transparent film (C),
By the above, a method for forming a decorative wall surface in which a colored coating (A), a patterned coating (B) partitioned by joints, and a transparent coating (C) are sequentially provided on a substrate,
The covering material A includes a resin component and a granular material,
The coating material B is obtained by dispersing liquid or gel colored resin particles in a dispersion medium containing a resin component,
The coating material C includes silica having an average primary particle diameter of 1 to 200 nm, and a resin component,
The granular powder in the coating material A is:
(I) Infrared reflective granular material,
(II) Infrared reflective powder and infrared transmissive powder,
Ri Do not from any of the embodiments,
The infrared reflective powder particles are silicon oxide, magnesium oxide, zirconium oxide, yttrium oxide, indium oxide, alumina, iron-chromium composite oxide, manganese-bismuth composite oxide, manganese-yttrium composite oxide, black iron oxide. One or more selected from iron-manganese composite oxide, iron-copper-manganese composite oxide, iron-chromium-cobalt composite oxide, copper-chromium composite oxide, copper-manganese-chromium composite oxide A method for forming a decorative wall surface.   The decorative wall surface according to claim 1, wherein the coating material B contains a piperidine compound.   The coating material C includes silica having an average primary particle diameter of 1 to 200 nm and a resin component, and a solid content weight ratio between the silica and the resin component is 0.5: 1 to 5: 1. The method for forming a decorative wall surface according to claim 1 or 2.   The said coating | covering material A contains a piperidine compound, The formation method of the decorative wall surface in any one of Claims 1-3 characterized by the above-mentioned. The said coating material A contains the resin component which the piperidine compound couple | bonded, The formation method of the decorative wall surface in any one of Claims 1-4 characterized by the above-mentioned.   The method for forming a decorative wall surface according to any one of claims 1 to 5, wherein the colored film (A) has a CIE color system lightness value L * value of 50 or less. A decorative wall surface obtained by the method according to claim 1.

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