JP6128884B2 - Decorative wall - Google Patents

Description

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

Conventionally, a decorative film having various patterns is formed on a wall surface of a building, a civil engineering structure, or the like. An example of such a decorative coating is a patterned coating in which colored resin particles of a plurality of colors are mixed.
For example, Patent Document 1 describes that a paint obtained by mixing microcapsules in an aqueous composition having a resin component is applied onto a substrate to obtain a pattern film. Patent Document 2 describes that after applying an undercoat paint on a substrate surface, a pattern is formed by applying a paint containing colored paint particles and a coating film forming component.

  However, if the wall surface having such a pattern coating is exposed outdoors for a long period of time, it may be contaminated by the influence of rainfall, dust, etc., and the aesthetics of the corner may be impaired. In particular, in such a pattern coating, there is a possibility that the initial contrast due to the colored resin particles of a plurality of colors is reduced.

Japanese Patent Laying-Open No. 2005-330396 JP 2007-296459 A

  The present invention has been made in view of the above-described problems, and suppresses the progress of contamination and maintains the initial aesthetics for a long period of time on a decorative wall surface on which a pattern of a plurality of colors is applied with colored resin particles. It is for the purpose.

  As a result of intensive studies to achieve the above object, the present inventors have conceived that a specific pattern coating (A) having colored resin particles and a specific transparent coating (B) are provided, and the present invention has been completed. It came to let you.

That is, the present invention has the following characteristics.
1. A decorative wall provided with a decorative coating on the substrate (excluding those provided by sticking),
The base material is a wall surface of a building or a civil engineering structure,
As the decorative coating, a patterned coating (A) and a transparent coating (B) are provided on the surface of the base material in order,
The pattern coating (A) is 2 or more colors of the colored resin particles (a1) is fixed to the transparent film (a2) having a piperidine compound, in which a pattern of a plurality of colors has been subjected by the colored resin particles (a1) Yes,
The transparent coating (B) contains silica having an average primary particle size of 1 to 200 nm and a resin component, and the solid content weight ratio between the silica and the resin component is 0.8: 1 to 5: 1. Characteristic decorative wall surface.
2. The transparent coating (a2) in the patterned coating (A) contains a resin component and a piperidine compound, and contains 0.01 to 50 parts by weight of a piperidine compound with respect to 100 parts by weight of the solid content of the resin component. 1. The decorative wall surface described.
3. A method of forming a decorative wall surface provided with a decorative film (excluding those provided by sticking) on a base material,
The base material is a wall surface of a building or a civil engineering structure,
To said substrate in a dispersion medium having a piperidine compound, subjected coating the coating material A of two or more colors of the colored resin particles (a1) are dispersed pattern of a plurality of colors is performed by the colored resin particles (a1) Forming a patterned film (A),
A coating containing silica having an average primary particle diameter of 1 to 200 nm and a resin component on the patterned coating (A), wherein the solid content weight ratio of the silica and the resin component is 0.8: 1 to 5: 1. A method for forming a decorative wall surface, comprising applying the material B to form a transparent coating (B).

  ADVANTAGE OF THE INVENTION According to this invention, the progress of contamination can be suppressed and the initial aesthetics can be maintained over a long period of time on a decorative wall surface on which a pattern of a plurality of colors has been applied with colored resin particles.

  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 specific pattern film (A) and a transparent film (B) are provided on the surface of the substrate as a decorative film, respectively. Specifically, the pattern coating (A) is obtained by fixing the colored resin particles (a1) to the transparent coating (a2) having a piperidine compound. The transparent coating (B) 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 pattern coating (A) and transparent coating (B), it is possible to impart aesthetics, suppress the progression of contamination of the cosmetic coating, and maintain the initial aesthetics for a long time. Can do. In particular, in the present invention, the contrast of a pattern of a plurality of colors due to colored resin particles can be maintained for a long time.
In the present invention, the adhesion between the pattern coating (A) and the transparent coating (B) is maintained for a long period of time by the action of the piperidine compound in the pattern coating (A). Furthermore, the piperidine compound in the pattern coating (A) can exhibit its performance for a long time due to the protective effect of the transparent coating (B). In the present invention, it is presumed that the effect of maintaining aesthetics is sufficiently exhibited by these synergistic actions.

[Pattern film (A)]
As the colored resin particles (a1) in the pattern coating (A), those containing a resin component and a colored pigment can be used. The particle diameter of the colored resin particles (a1) is not particularly limited, but is preferably 0.1 to 20 mm, more preferably 0.5 to 10 mm.

  Examples of the resin component in the colored resin particles (a1) include acrylic resin, urethane resin, vinyl acetate resin, silicon resin, fluororesin, acrylic vinyl acetate resin, acrylic urethane resin, and acrylic silicon resin. Species or two or more 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 include pyrazolone-based, anthraquinone-based, perylene-based, quinacridone-based, disazo-based, isoindolinone-based, benzimidazole-based, phthalocyanine-based, quinophthalone-based organic color pigments, pearl pigments, aluminum pigments, fluorescent pigments, and the like. The colored resin particles (a1) can be prepared in a desired color tone by combining one or more of such colored pigments. In the colored resin particles (a1), an extender can be used in addition to such a colored pigment.
The colored resin particles (a1) preferably contain 0.01 to 200 parts by weight, more preferably 0.1 to 100 parts by weight of the color pigment, based on 100 parts by weight of the solid content of the resin component.

  The colored resin particles (a1) described above are fixed to the transparent coating (a2). The transparent coating (a2) preferably contains a resin component in order to fix the colored resin particles (a1) described above. Examples of such resin components include acrylic resins, urethane resins, vinyl acetate resins, urethane resins, silicone resins, fluororesins, acrylic vinyl acetate resins, acrylic urethane resins, acrylic silicone resins, and the like. Or 2 or more types can be used. Such a resin component is preferably a water-soluble resin and / or a water-dispersible resin.

As the piperidine compound in the transparent film (a2), 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, the above a) and a) may be combined.

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 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. 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 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 (A) may be in any form as long as the colored resin particles (a1) are dispersed in the transparent coating (a2), but the colored resin particles (a1) having two or more colors (more preferably 3 to 8 colors) are included. A form scattered in the transparent coating (a2) is preferred. The solid content weight ratio of the colored resin particles (a1) to the transparent coating (a2) in the pattern coating (A) is preferably 0.1: 1 to 5: 1, more preferably 0.3: 1 to 3: 1. It is. If it is such a form, aesthetics can be improved further.

The pattern coating (A) is coated with a coating material (hereinafter also referred to as “coating material A”) in which liquid or gel-like colored resin particles are dispersed in a dispersion medium containing a resin component and having a piperidine compound. Can be formed. In such a coating material A, the components in the dispersion medium form a transparent coating (a2), and the liquid or gel colored resin particles are dried and fixed to the transparent coating (a2). In the present invention, by using the coating material A, the pattern coating (A) can be efficiently formed by one coating. The coating of the coating material A may be performed using a known coating instrument such as a brush, a roller, or a spray. The coating amount of the coating material A is preferably about ²⁰ to 500 g / m ^{2 in} terms of solid content.

  This coating material A may contain other components in the dispersion medium and / or the colored resin particles as long as the effects of the present invention are not significantly impaired. Examples of such components include matting agents, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreezing agents, pH adjusting agents, antiseptics, antifungal agents, and antialgal agents. Antibacterial agents, dispersants, antifoaming agents, adsorbents, fibers, crosslinking agents, ultraviolet absorbers, antioxidants, catalysts and the like can be mentioned. The colored resin particles may contain a piperidine compound.

In the pattern coating (A), it is desirable that the colored resin particles (a1) have a flat shape. In such an embodiment, a large pattern can be formed while the pattern coating (A) is relatively thin and lightweight. In order to obtain the pattern coating (A) having flat colored resin particles, for example,
A method of coating the coating material A 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 (B)]
The transparent coating (B) in the present invention is provided on the outermost surface of the decorative coating. This transparent film (B) 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 (B) 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 (B). 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 (B) 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 coating (B) can be formed by applying and drying the above-described silica and a coating material containing a resin component (hereinafter also referred to as “coating material B”). This coating material B 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.

This coating material B may be applied to the entire surface of the pattern coating (A). 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 coating material B for forming the transparent film (B) is in terms of the solid content, preferably 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
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 aqueous dispersion mainly composed of water. The coating material A1 dispersed in 3 parts by weight of the piperidine compound with respect to 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 A2
The above three kinds of colored resin particles (similar to the coating material A1) are dispersed in an aqueous dispersion medium 2 (acrylic resin emulsion, piperidine compound (bis (2,2,6,6-tetramethyl-1- (octyloxy) decanedioate)). -4-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 A3
The above three kinds of colored resin particles (similar to the coating material A1) are dispersed in an aqueous dispersion medium 3 (acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)), water A coating material A3 in which 8 parts by weight of a piperidine compound is contained per 100 parts by weight of the solid content of the resin component was produced. 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 A4
The above three kinds of colored resin particles (similar to the coating material A1) are dispersed in an aqueous dispersion medium 4 (acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)), water A coating material A4 in which 13 parts by weight of a piperidine compound is contained per 100 parts by weight of the solid content of the resin component was produced. 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 A5
The above three kinds of colored resin particles (similar to the coating material A1) are aqueous dispersion medium 5 (acrylic resin emulsion, piperidine compound (bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate)), water A coating material A5 in which 18 parts by weight of a piperidine compound is contained per 100 parts by weight of the solid content of the resin component is manufactured. 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 A6
Production of coating material A6 in which the above three kinds of colored resin particles (similar to coating material A1) are dispersed in an aqueous dispersion medium 6 (acrylic resin emulsion, aqueous dispersion medium containing water as a main component; does not contain piperidine compound). did. 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 coating material B, the following materials were prepared.

○ Coating material B1
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.

○ Coating material B2
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.

○ Coating material B3
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.

○ Coating material B4
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).

○ Coating material B5
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.

○ Coating material B6
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 specimen production)
The coating material A is spray-coated at a coating amount of 150 g / m ² (solid content) on a slate plate that has been previously treated with a sealer to form a pattern film, and after curing for 1 day, the coating material B is applied. Spray coating was performed at 3 g / m ² (solid content) and curing was performed for 7 days. The test body was produced by the above method. The coating and curing were all performed under standard conditions (temperature 23 ° C., relative humidity 50%).

(Test method)
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 the test body for 1500 hours with an accelerated weathering tester (“Metal Weather Meter”, manufactured by Daipura Wintes Co., Ltd.), the contamination state by the pollutants was evaluated by the same method as described above.
The evaluation of the contamination state is “A” when the adherence of the contaminant is not recognized, “B” when the adherence of the contaminant is slightly recognized, and “C” when the adherence of the contaminant is recognized. This was performed in three stages (A>B> C).

(Test results)
Table 1 shows the coating materials used in the above test and the test results. In Examples 1 to 9, the evaluation of the contamination state was good both before and after the accelerated weather resistance test (before and after promotion).

Claims (3)

A decorative wall provided with a decorative coating on the substrate (excluding those provided by sticking),
The base material is a wall surface of a building or a civil engineering structure,
As the decorative coating, a patterned coating (A) and a transparent coating (B) are provided on the surface of the base material in order,
The pattern coating (A) is 2 or more colors of the colored resin particles (a1) is fixed to the transparent film (a2) having a piperidine compound, in which a pattern of a plurality of colors has been subjected by the colored resin particles (a1) Yes,
The transparent coating (B) contains silica having an average primary particle size of 1 to 200 nm and a resin component, and the solid content weight ratio between the silica and the resin component is 0.8: 1 to 5: 1. Characteristic decorative wall surface.   The transparent coating (a2) in the patterned coating (A) contains a resin component and a piperidine compound, and contains 0.01 to 50 parts by weight of a piperidine compound with respect to 100 parts by weight of the solid content of the resin component. The decorative wall surface according to claim 1. A method of forming a decorative wall surface provided with a decorative film (excluding those provided by sticking) on a base material,
The base material is a wall surface of a building or a civil engineering structure,
To said substrate in a dispersion medium having a piperidine compound, subjected coating the coating material A of two or more colors of the colored resin particles (a1) are dispersed pattern of a plurality of colors is performed by the colored resin particles (a1) Forming a patterned film (A),
A coating containing silica having an average primary particle diameter of 1 to 200 nm and a resin component on the patterned coating (A), wherein the solid content weight ratio of the silica and the resin component is 0.8: 1 to 5: 1. A method for forming a decorative wall surface, comprising applying the material B to form a transparent coating (B).