JP6261943B2 - Architectural decorative material and manufacturing method thereof - Google Patents

Description

  The present invention relates to a building decorative material and a method for manufacturing the same, and more specifically, an overcoat coloring paint used for partial patterning includes both an inorganic pigment and an organic pigment, and the appearance is intentionally changed with aging. The present invention relates to a building decorative material and a method for manufacturing the same.

  Architectural decorative boards used as building materials, so-called building materials, are typically widely used in outdoor signboards, road signs, etc. in addition to indoor and outdoor wall surfaces of buildings. There are many types of these decorative veneers, including inorganic decorative veneers using inorganic substrates, metal siding, PVC extrusion siding, ALC panels, metal plates, tiles, etc. In any case, it is possible to prevent deterioration of the base material itself and to improve the design of the appearance with respect to the surface of the base material formed into a necessary shape such as a plate shape using materials such as inorganic materials, metal materials, and organic materials. Various patterns are applied for the purpose.

  With regard to the patterning applied to the surface of such a base material, in recent years, higher and higher design properties have been required due to demands based on expression of individuality. For example, based on predetermined image data, in addition to the three primary colors of yellow (Y: yellow), cyan (C: blue-green) and magenta (M: magenta), four colors of black (K: black) are necessary. Colored inks and paints by ejecting ink from inkjet nozzles and attaching them in the form of dots to form the desired pattern on the surface of the substrate, flexographic printing, gravure printing, air spray painting, airless spray painting, etc. The method of patterning with is well known.

  However, because of the consideration to prevent destruction of the surrounding natural environment and landscape, as well as the living environment, there are demands on the decorative veneer for buildings based on the environment to be used. After all, for example, natural stone pattern, marble pattern The colors and patterns used mainly like tile patterns, wood grain patterns, brick patterns, etc. are relatively similar.

  On the other hand, another important factor required for a decorative decorative board is excellent weather resistance. For this reason, normally, a clear coating is applied to the outermost layer to provide a clear layer, and in some cases, an ultraviolet absorber or an antioxidant is added to the clear coating to remove the color or color of the colored / patterned layer. Prevent change. In addition, as described in, for example, Patent Document 1, an inorganic pigment such as titanium or iron oxide is mainly used as a color pigment in an overcoat layer that forms a base of a clear layer and colors or patterns a base material. used. That is, organic pigments such as azo pigments, condensed polycyclic pigments, and quinacridone pigments are generally superior to inorganic pigments in terms of saturation and vividness, but are more expensive than inorganic pigments. However, the main reason why inorganic pigments are mainly used is that organic pigments have a color fading or color change compared to inorganic pigments and are inferior in weather resistance. The use of organic pigments is avoided as much as possible.

JP-A-8-290105 (paragraphs 0029 to 0034)

  Under these circumstances, the present inventors have conducted extensive research to increase the lineup of decorative panels for buildings. As a result, the conventional technical common sense has been reversed and inorganic pigments and organic pigments have been used as the coloring pigments for top-coat colored paints. It has been found that a new decorative veneer for building can be obtained by including both of the above. In other words, by using both inorganic pigments and organic pigments in combination, causing the organic pigments to fade or change colors, a natural texture change over time can be realized, resulting in an unprecedented decorative veneer for architecture. The present invention has been completed.

  Accordingly, an object of the present invention is to provide a building decorative material capable of changing the appearance with a natural texture by aging.

  Another object of the present invention is to provide a method for producing a building decorative material that can change its appearance with a natural texture by aging.

  That is, the present invention was obtained by applying a base material, an undercoat layer obtained by painting an undercoat colored paint, an overcoat layer obtained by partially painting an overcoat colored paint, and a clear paint. An architectural decorative material having a clear layer, wherein the overlying colored paint contains both an inorganic pigment and an organic pigment as colored pigments.

  The present invention also includes a step of forming an undercoat layer by applying an undercoat colored paint on a substrate, a step of forming a topcoat layer by partially applying an overcoat colored paint, a clear paint by applying a clear paint. A method for producing a building decorative material comprising a step of forming a layer, wherein the top-coated colored paint contains both an inorganic pigment and an organic pigment as colored pigments It is.

Hereinafter, the architectural decorative material and the manufacturing method thereof according to the present invention will be described in detail.
In the present invention, as the base material used for manufacturing the architectural decorative material, the material, shape, and the like are particularly limited as long as it is possible to form an undercoat layer by applying an undercoat coloring paint described later. However, various building materials conventionally used for this kind of building material can be mentioned. Examples include inorganic materials such as flexible boards, calcium silicate boards, gypsum slag bar light boards, wood chip cement boards, precast concrete boards, ALC boards, gypsum boards, metal materials such as aluminum, iron and stainless steel, In addition to organic materials such as vinyl, polyurethane, polyethylene terephthalate, polyethylene, and polypropylene, combinations of two or more selected from inorganic materials, metal materials, and organic materials can be exemplified. These substrates may have a smooth surface, or may have a relatively fine uneven shape and / or a relatively large uneven shape.

  In addition, the undercoat layer obtained by coating the undercoat coloring paint is provided for the purpose of closing the bare holes on the surface of the base material to be used or forming the base color of the decorative decorative board. Undercoat coloring paints used in the production of this type of building material can be used. For example, in addition to synthetic resins and colored pigments, undercoat colored paints containing solvents, additives, modifiers, etc. can be used as needed. Also, room temperature curing type, forced drying type, bake curing type, etc. There is also no particular restriction on the type of.

  Among these, representative examples of the synthetic resin include cellulose resin, vinyl resin, acrylic resin, amino acrylic resin, acrylic urethane resin, polyester urethane resin, and acrylic silicon resin. . Further, any of a form in which these synthetic resins are dissolved or dispersed in an organic solvent, a form in which these synthetic resins are dissolved or dispersed in water, a solventless type, and a powder type can be arbitrarily selected.

  Examples of the colored pigment include various inorganic and organic pigments such as titanium oxide, iron oxide, carbon black, phthalocyanine, quinacridone, etc., as well as general undercoat colored paints. When a color change occurs, it becomes difficult to control to obtain a change due to the natural texture as intended in the present invention. Therefore, it is preferable to avoid the use of an organic pigment as much as possible in a colored pigment in an undercoat colored paint. Inorganic pigments should be used.

  Furthermore, in the undercoat coloring paint, various pigments such as barium sulfate, talc, and kaolin may be used in combination with the extender pigment, in addition to the color pigment, and water, xylene, toluene, Solvents such as butanol, methyl isobutyl ketone, butyl acetate and cellosolve, various additives such as ultraviolet absorbers, surface conditioners, curing accelerators, precipitation inhibitors and dispersants, modifiers and the like can be appropriately used.

There are no particular restrictions on the means for applying the primer coating to the surface of the substrate, and any of the methods conventionally used can be applied, including air spray coating, airless spray coating, electrostatic coating, roll coater coating, Flow coater coating or the like can be selected as appropriate. The coating amount of the undercoat coloring paint can be appropriately changed according to the selected base material and the type of the undercoat coloring paint. For example, when the base material is an inorganic material, the undercoat coloring paint is 10 to 10 in terms of solid content. The coating is preferably performed in the range of 40 g / m ² , and preferably in the range of 15 to 30 g / m ² . That is, in order to prevent the adhesion between the base material and the undercoat layer and the bleed-inhibiting effect of the Efro component from being reduced, it is preferable to set it to 15 g / m ² or more. In addition to this, it is preferable to adjust the amount to 30 g / m ² or less in order to prevent the occurrence of checking or the like and to easily form a smoother undercoat layer. The undercoat layer may be the same kind of undercoat colored paint or may be overcoated with different undercoat colored paints to provide two or more layers.

  In addition, the overcoat layer obtained by partially painting a top coat containing a color pigment is designed to enhance the design of the decorative decorative board by patterning the colored coating film of the undercoat layer. It is. In addition, in the present invention, the use of both inorganic pigments and organic pigments as the color pigments in the top coating color paint causes a color change or a color change of the organic pigment due to aging, and a natural texture change. (Aging) is expressed.

  Here, as the inorganic pigment to be included in the top coat paint, those generally contained in the top coat paint can be used. For example, titanium oxide, zinc oxide, zinc sulfide, carbon black, chrome lead, ocher, valve Handles, composite oxides (nickel / titanium series, chromium / titanium series, bismuth / vanadium series), etc.

On the other hand, various organic pigments such as azo pigments, condensed polycyclic pigments, and dyed lake pigments can be used as organic pigments to be included in the top coating color paint. For example, monoazo and diazo pigments (Pig. No. Red 12,48,112,144,150,170,184,188 etc.), azo lake pigments (PigNo.Red 49: 1,50: 1,53: 1,57: 1,58: 2,58: 4,60: 1 etc.), quinacridone pigments (Pig.No. Red 122, Violet 19 etc.), pyranthrone red (Pig.No.Red 216), perylene pigment (Pig.No.Red 178,179 etc.), anthraquinone pigment (Pig.No.Red 177), condensed azo type Pigment (Pig.No.Red 144,146), diketopyrrolopyrrole pigment (Pig.No.254,255, etc.)
Etc. can be illustrated.

  Specifically, as organic pigments mainly for yellow, for example, CI Pigment Yellow 1 (Hansa Yellow G), 2, 3 (Hansa Yellow 10G), 4, 5 (Hansa Yellow 5G), 6, 7, 10, 11, 12 (disazo yellow AAA), 13, 14, 16, 17, 24 (flavantron yellow), 55 (disazo yellow AAPT), 61, 61: 1, 65, 73, 74 (fast yellow 5GX), 75, 81, 83 (disazo yellow HR), 93 (condensed azo yellow 3G), 94 (condensed azo yellow 6G), 95 (condensed azo yellow GR), 97 (fast yellow FGL), 98, 99 (anthraquinone), 100, 108 (anthra) Pyrimidine yellow), 109 (isoindolinone yellow 2GLT), 110 (isoindolinone yellow) Low 3RLT), 113, 117, 120 (benzimidazolone yellow H2G), 123 (anthraquinone yellow), 124, 128 (condensed azo yellow 8G), 129, 133, 138 (quinophthalone yellow), 139 (isoindolinone yellow) , 147, 151 (benzimidazolone yellow H4G), 153 (nickel nitroso yellow), 154 (benzimidazolone yellow H3G), 155, 156 (benzimidazolone yellow HLR), 167, 168, 172, 173 (isoindolinone) Yellow 6GL), 180 (benzimidazolone yellow) and the like.

  Examples of red organic pigments include C.I. l. Pigment Red 1 (Para Red), 2, 3 (Toluidine Red), 4, 5 (lTR Red), 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21 , 22, 23, 30, 31, 32, 37, 38 (pyrazolone red B), 40, 41, 42, 88 (thioindigo Bordeaux), 112 (naphthol red FGR), 114 (brilliant carmine BS), 122 (dimethyl) Quinacridone), 123 (perylene vermilion), 144, 146, 149 (perylene car red), 150, 166, 168 (antanthrone orange), 170 (naphthol red F3RK), 171 (benzimidazolone maroon HFM), 175 ( Benzimidazolone Red HFT), 176 (Benzimidazolone Carmine H F3C), 177, 178 (perylene red), 179 (perylene maroon), 185 (benzimidazolone carmine HF4C), 187, 188, 189 (perylene red), 190 (perylene red), 194 (perinone red), 202 (quinacridone) Magenta), 209 (dichloroquinacridone red), 214 (condensed azo red), 216, 5219, 220 (condensed azo), 224 (perylene red), 242 (condensed azo scarlet), 245 (naphthol red), or CI pigment violet 19 (quinacridone), 23 (dioxazine violet), 31, 32, 33, 36, 38, 43, 50 and the like.

  Further, as an organic pigment for blue, for example, C.I. l. Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6 (all are phthalocyanine blue), 16 (metal-free phthalocyanine blue), 17: 1, 18 (alkali blue toner), 19, 21, 22, 25, 56, 60 (slen blue), 64 (dichloroindanthrone blue), 65 (violanthrone), 66 (indigo) and the like. Further, as the organic pigment for black, a black organic pigment such as aniline black (C.I. Pigment Black 1) can be used.

  Furthermore, as organic pigments other than those for yellow, red or blue, for example, CI Pigment Orange 1, 2, 5, 7, 13, 14, 15, 16 (Vulcan Orange), 24, 31 (Condensed Azo Orange 4R) , 34, 36 (benzimidazolone orange HL), 38, 40 (pyrantron orange), 42 (isoindolinone orange RLT), 43, 51, 60 (benzimidazolone-based insoluble monoazo pigment), 62 (benzimidazolone) CI pigment green 7 (phthalocyanine green), 10 (green gold), 36 (salt brominated phthalocyanine green), 37, 47 (violanthrone green); or CI pigment brown 1, 2, 3, 5, 23 (condensed azo brown 5R), 25 (benzimidazolone bra Down HFR), 26 (Perylene Bordeaux), 32 (benzimidazolone brown HFL), and the like.

  Above all, as an architectural makeup material with natural stone patterns, marble patterns, tile patterns, wood grain patterns, brick patterns, etc., it is preferable to use organic pigments to reproduce natural texture changes over time. CI Pigment Yellow, CI Pigment Red, CI Pigment Violet, CI Pigment Orange, or CI Pigment Brown may be used. In addition, only 1 type may be used for an organic pigment and you may make it mix | blend and use 2 or more types.

  Further, the blending ratio of the organic pigment and the inorganic pigment in the color pigment of the top coat paint is preferably in the range of organic pigment: inorganic pigment = 1: 9 to 9: 1 by mass ratio, more preferably. Is preferably in the range of organic pigment: inorganic pigment = 1.5: 8.5 to 5.0: 5.0 in terms of mass ratio. When the ratio of the organic pigment is less than 1: 9, it may be difficult to reproduce the secular change as intended in the present invention. On the other hand, when the ratio of the organic pigment is larger than 9: 1, the color change or discoloration of the organic pigment becomes too conspicuous, and it may be difficult to reproduce the natural texture change.

Here, it is difficult to quantitatively specify the degree of natural texture change (aging) over time, and since it may change depending on the type of color or patterning, it cannot be specified in general. However, as described in the following examples, the color difference ΔE * before and after the accelerated weather resistance test at an eye super UV tester (Iwasaki Electric Co., Ltd.) test time of 200 hours is 1.5 to 20.0, preferably 3.0. It is preferable to use a top-coated colored paint in which an organic pigment and an inorganic pigment are blended so as to be ˜6.0. Here, the color difference is a value obtained by quantifying the distance between two colors, and can be obtained as follows. That is, in the L * · a * · b * color system chromaticity diagram defined in JIS-Z-8729, the difference * a * in the a * axis direction and the difference Δb * in the b * axis direction between the two colors. The color difference ΔE * is obtained by substituting the difference ΔL * in the L * axis direction into the following expression 1.
ΔE * = {(Δa * 2) + (Δb * 2) + (ΔL * 2)} 1/2 square (1)

  In addition, the top coating color paint can be the same as the general top coating color paint conventionally used in this type of building material, except for the color pigment, and is based on acrylic resin, vinyl acetate resin, urethane resin. And synthetic resins such as epoxy resin, alkyd resin, and polybutadiene resin. Further, any of a form in which these synthetic resins are dissolved or dispersed in an organic solvent, a form in which these synthetic resins are dissolved or dispersed in water, or a solvent-free form can be selected. In addition to colored pigments, for top-coated colored paints, water, organic solvents, extender pigments, thickeners, dispersants, antifoaming agents, film-forming aids, preservatives, UV absorbers, and surface conditioning as necessary The thing containing various additives, such as an agent, can be illustrated. Here, the content of the color pigments (total of inorganic pigments and organic pigments) in the overcoat paint is preferably 0.02 to 70% by mass in the paint.

  Regarding the means for applying the top coat coloring paint, the present invention does not provide a top coat layer on the entire surface of the substrate, but performs partial patterning. The method described above may be adopted. For example, airless spray coating, air spray coating, flexographic printing, gravure printing, ink jet printing, and the like can be mentioned, and any one type or two or more types may be combined.

  In addition, regarding the form of partial patterning, for example, a case of manufacturing a building decorative material that exhibits a tile pattern or a brick pattern will be described. For example, a base material that imitates a tile or brick having concave and convex portions On the other hand, after the undercoat layer is formed on the entire surface, if the top coat coloring paint is applied to a part or all of the part corresponding to the convex part of the base material, the joint (concave part) is a partial pattern by the top coat layer. There will be no attachment. As described above, the overcoat layer contains inorganic pigments and organic pigments as color pigments, and the organic pigments lose color or change in color over time. A natural change in texture can be reproduced by combining a partial change in the coating layer with a colored coating film due to the undercoat layer.

In addition, when manufacturing a building decorative material having a tile pattern or a brick pattern as described above, in the airless spray coating or air spray coating, the top coating is applied in the range of ² to 15 g / m ^{2 in} terms of solid content. Preferably, it is good to paint in the range of 4 to 10 g / m ² . That is, 4 g / m ² or more is preferable for stable application, and 10 g / m ² or less is preferable for obtaining a smooth coating surface without causing checking or blistering. It is.

  In addition to the above, for example, it is of course possible to manufacture a decorative material for building by partially painting an overcoat coloring paint on a flat base material having a grain pattern without irregularities. Painting is not limited in these cases. In addition, we prepare intermediate coating paints that are different in color from undercoat and topcoat paints. For example, prior to partial coating with topcoat paint, sponge roll coating or rubber roll coating machines are applied to the parts corresponding to the convex portions of the substrate. For example, an overcoat coloring paint may be applied, and the overcoat coloring paint may be partially applied to the intermediate coating layer to superimpose the pattern.

  Moreover, the surface of the architectural decorative material in the present invention is provided with a clear layer obtained by applying a clear paint. Here, with respect to the clear coating material, conventionally used clear coating materials can be used, and are not particularly limited, but examples thereof include acrylic copolymers, hindered amine group-containing acrylic copolymers, hydrolyzable silyl group-containing acrylic coatings. If it is a clear paint containing at least one selected from the group consisting of a copolymer, a fluorine-containing copolymer, a hydrolyzable silyl group-containing fluorine-containing copolymer, and an alkoxysilane condensate as a binder, an architectural cosmetic material It is preferable in that excellent weather resistance can be imparted to itself.

  In addition, the clear paint is an extender pigment, a color pigment containing a matting agent, or color mica, urethane-based, acrylic-colored colored beads, urethane-based, acrylic-based transparent beads, scaly graphite, as long as transparency is not lost. Various pigments such as flaky iron oxide, plated glass flakes, plated mica, pearl pigments, aluminum flakes, aluminum foil color clear coating and cutting products may be blended, and ultraviolet absorbers and antioxidants etc. It may be added.

  There are no particular restrictions on the means for applying the clear paint. For example, it may be applied using a known coating method such as conventional air spray coating, airless spray coating, electrostatic coating, roll coater coating, or flow coater coating. it can.

  According to the present invention, the top-colored paint for partial patterning contains both inorganic pigments and organic pigments as colored pigments, causing discoloration and color changes of the organic pigments, and unprecedented construction A decorative board can be obtained. That is, according to the architectural decorative material of the present invention, it is possible to reproduce a change in natural texture over time.

FIG. 1 is an explanatory plan view showing a test plate (construction decorative material) produced in the example. FIG. 2 is a cross-sectional explanatory view showing a test plate (architectural decorative material) produced in the example.

  EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to these content.

[Adjustment of sealer]
V-selan # 300 second sealer (acrylic emulsion resin system, manufactured by Dainippon Paint Co., Ltd.) as a sealer to be used was adjusted to a viscosity of 70 KU (20 ° C.) and a heating residue of 46% by mass.

[Adjustment of undercoat coloring]
As shown in Table 1 below, the raw materials were blended and adjusted to a viscosity of 66 KU (20 ° C.) and a heating residue of 41 mass%.

[Adjustment of intermediate coating]
As shown in Table 2 below, the raw materials were blended and adjusted to a viscosity of 66 KU (20 ° C.) and a heating residue of 41% by mass.

[Adjustment of top coating color]
As shown in Table 3 below, the raw materials were blended and adjusted to a viscosity of 74 KU (20 ° C.) and a heating residue of 19% by mass. Of the colored pigments listed in Table 2 below, yellow iron oxide easily dispersible pigment (Toyo Ink Industries Co., Ltd. EMF color ocher HL: 57% by mass of pigment), red iron oxide easily dispersible pigment (Toyo Ink Industry) EMF color BROWN HY (manufactured by Co., Ltd.) and carbon black easy-dispersion pigment (Toyo Ink Industries Co., Ltd. EMF color HK: 30% by mass of pigment) are inorganic pigments, and organic yellow easy dispersion Pigment (EMF color H2RN manufactured by Toyo Ink Industries Co., Ltd .: 32% by mass of pigment) and organic red easily disperse pigment (EMF color RED HFB manufactured by Toyo Ink Industry Co., Ltd .: 30% by mass of pigment) are organic pigments. .

[Adjustment of clear paint]
As shown in Table 4 below, the raw materials were blended and adjusted to a viscosity of 80 KU (20 ° C.) and a heating residue of 36% by mass.

[Adjustment of test plate]
As the base material, a gypsum slag perlite plate (surface shape: tile pattern having an unevenness of 4 mm) was used, and the dimensions were 455 mm width × 300 mm length × 16 mm thickness.
First, the above sealer is diluted with water (dilution rate 30% by mass), and coated on the entire surface of the base material 1 by air spray so that the solid content coating amount is 28 g / m ² and dried at 100 ° C. for 5 minutes. Thus, a sealer film 2 was formed as shown in FIG. Next, the above-mentioned undercoat coloring paint is diluted with water (dilution ratio 20% by mass), and is applied to the base material 1 on which the sealer film 2 is formed by air spray so that the solid content coating amount is 27 g / m ^2. And dried at 100 ° C. for 5 minutes to form an undercoat layer 3. Then, the above-mentioned intermediate coating coloring paint is diluted with water (dilution rate 5 mass%), and the undercoat layer 3 on the convex portion 8 of the base 1 is adjusted so as to have a solid content application amount of 16 g / m ² with a sponge roll. It was painted on and dried at 100 ° C. for 3 minutes to form an intermediate coating layer 4.

Thereafter, the top-colored paint is diluted with water (dilution ratio 50% by mass), and is applied to a part of the convex portion 8 of the substrate 1 so that the solid content is 6 g / m ² by air spray. The topcoat layer 5 was formed by drying at 100 ° C. for 3 minutes. Further, the clear paint is diluted with water (dilution rate 30% by mass), and is applied to the entire surface of the substrate 1 by air spray so that the solid content coating amount is 22 g / m ^2, and 100 ° C. × 10 A clear layer 6 was formed by drying for a minute to obtain a test plate. That is, in the obtained test plate, the joint 7 of the substrate 1 is colored by the undercoat layer 3 as shown in FIG. On the other hand, this test plate is partially coated with an overcoat coloring paint, and the convex portion 8 of the base material 1 includes a colored portion 8-1 colored by the undercoat layer 3 and the intermediate coat layer 4 and an undercoat layer 3. And a colored portion 8-2 colored by the intermediate coating layer 4 and the top coating layer 5.
The obtained test plate was subjected to various evaluation tests shown below.

[Accelerated weathering test]
The test piece was tested with an eye super UV tester. The test conditions are as shown in Table 5 below. Then, the color difference (ΔE *) from an untested one was measured (that is, the color difference ΔE * before and after the accelerated weather resistance test), and the appearance after the test was evaluated according to the following criteria. The results are shown in Table 6.
A: There is no change in the coating film appearance, and there is no change in the gloss.
○: The coating film appearance was slightly changed, and the gloss was slightly lowered.
X: The change in the coating film appearance was remarkable, and the gloss was remarkably reduced.

[Warm resistance test]
The test piece was immersed in a constant temperature water bath maintained at 40 ° C., taken out after 240 hours and dried, and then the appearance was evaluated according to the following criteria. In addition, the surface of the coating film is cut with a cutter with a cutter (putting 5 × 5 squares at 4 mm intervals), and then sticking and peeling with cello tape (registered trademark) from above, by visual observation, Evaluation was made according to the following criteria. The results are shown in Table 6.
<Appearance>
A: There is no change in the coating film appearance, and there is no change in the gloss.
○: The coating film appearance was slightly changed, and the gloss was slightly lowered.
X: The change in the coating film appearance was remarkable, and the gloss was remarkably reduced.
<Coating adhesion>
(Double-circle): Peeling of a coating film is not seen (0 piece of squares which peeled off).
○: A part of the coating film is peeled off (1 to 5 squares peeled off).
X: The coating film is peeled as a whole (6-25 pieces of peeled cells).

[Moisture resistance test]
After leaving the test piece in a constant temperature and humidity chamber of 95% RH or higher at 50 ° C. for 240 hours, the appearance is evaluated according to the following criteria in the same manner as in the above-mentioned hot water resistance test, and a cross-cut test of the coating film is performed. It was evaluated according to the criteria. The results are shown in Table 6.
<Appearance>
A: There is no change in the coating film appearance, and there is no change in the gloss.
○: The coating film appearance was slightly changed, and the gloss was slightly lowered.
X: The change in the coating film appearance was remarkable, and the gloss was remarkably reduced.
<Coating adhesion>
(Double-circle): Peeling of a coating film is not seen (0 piece of squares which peeled off).
○: A part of the coating film is peeled off (1 to 5 squares peeled off).
X: The coating film is peeled as a whole (6-25 pieces of peeled cells).

  As can be seen from the results shown in Table 6, when the top-coated colored paint containing only the inorganic pigment was used, the test piece after the accelerated weather resistance test hardly changed in appearance and contained only the organic pigment. In the case of using a top-coated colored paint, the test piece after the accelerated weather resistance test looked like the original color disappeared and changed to a completely different color. On the other hand, when an overcoat coloring paint containing an inorganic pigment and an organic pigment in a predetermined ratio is used, the test piece after the accelerated weather resistance test has a yellowish appearance and changes to red. I was able to reproduce the change.

1: base material 2: sealer film 3: undercoat layer 4: intermediate coat layer 5: topcoat layer 6: clear layer 7: joint of base material 8: convex part of base material
8-1: Colored part (undercoat layer + intermediate coat layer)
8-2: Colored part (undercoat layer + intermediate coat layer + top coat layer)

Claims (9)

It had a base material, an undercoat layer obtained by painting an undercoat colored paint, an overcoat layer obtained by partially painting an overcoat colored paint, and a clear layer obtained by painting a clear paint a building decorative materials, topcoat colored paint, you see contains both an inorganic pigment and an organic pigment as a coloring pigment, organic pigment blending ratio of the organic pigment and the inorganic pigment is in a weight ratio of inorganic pigments = 1: 9 An architectural decorative material characterized by being in the range of ˜9: 1 .   The architectural decorative material according to claim 1, wherein the base material is a base material having a concave portion and a convex portion, and at least a part of the convex portion is coated with a top coating coloring paint to be partially patterned.   The top coat layer is partially coated by using one or more selected from the group consisting of airless spray coating, air spray coating, flexographic printing, gravure printing, and inkjet printing. The architectural decorative material according to 1 or 2. The organic pigment in the colored pigment of the top coat paint is one or more selected from the group consisting of CI Pigment Yellow, CI Pigment Red, CI Pigment Violet, CI Pigment Orange, and CI Pigment Brown. The architectural decorative material according to any one of 1 to 3 . The architectural decorative material according to any one of claims 1 to 4 , wherein the undercoat coloring paint forming the undercoat layer uses an inorganic pigment as a coloring pigment. A step of forming an undercoat layer by applying an undercoat coloring paint on a substrate, a step of forming a topcoat layer by partially applying an overcoat coloring paint, and a step of forming a clear layer by applying a clear paint a method of manufacturing a building decorative material including, topcoat colored paint, see contains both an inorganic pigment and an organic pigment as a coloring pigment, organic pigment blending ratio of the organic pigment and the inorganic pigment weight ratio: Inorganic pigment = 1: 9 to 9: 1 The manufacturing method of the architectural decorative material characterized by the above-mentioned. The base material is a base material having a concave portion and a convex portion, and at least part of the convex portion is selected from the group consisting of airless spray coating, air spray coating, flexographic printing, gravure printing, and inkjet printing. The manufacturing method of the architectural decorative material according to claim 6 , wherein a partial pattern is formed by applying a top-colored paint using any one or more of them. The organic pigment in the colored pigment of the top coat paint is one or more selected from the group consisting of CI Pigment Yellow, CI Pigment Red, CI Pigment Violet, CI Pigment Orange, and CI Pigment Brown. A method for producing a building decorative material according to 6 or 7 . The method for producing an architectural decorative material according to any one of claims 6 to 8 , wherein the undercoat coloring paint forming the undercoat layer uses an inorganic pigment as a coloring pigment.

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