JP2008121278A - Self-cleaning road incidental equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide self-cleaning road incidental equipment which can simplify a step associated with the formation of a covering layer, while developing self-cleanability over a long period of time, and which has the covering layer formed without a hindrance, even if a surface of the self-cleaning road incidental equipment has low solvent resistance. <P>SOLUTION: In the covering layer 2, photocatalytic particulates are contained in a coating composition which contains a hydroxyl group-containing fluororesin composition, an isocyanate-based curing agent, a fluorochemical surfactant, an ultraviolet absorber and an organosilicate compound. This enables the covering layer to maintain adhesion and high transparency even if it is exposed outdoors for a long period of time. Since the covering layer can be formed on the outer surface of the road incidental equipment by employing a one-coat one-bake method, the step associated with the formation of the covering layer can be simplified. Since the surface of the road incidental equipment is hardly affected by a solvent even if the covering layer is formed on the outer surface of the road incidental equipment 1 with low solvent resistance, the covering layer can be formed on the outer surface without any hindrance. Additionally, since high hydrophilicity is developed by the mixed photocatalytic particulate, high antifouling performance can be exerted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a self-cleaning road incidental facility in which a contaminant that adheres to the outer surface is washed away relatively easily by rainwater and the surface is kept clean by forming a self-cleaning, colorless and transparent coating layer on the outer surface. It is about.

  A self-cleaning, colorless and transparent coating layer is formed on the outer surface of the road incidental facilities, and the contaminants attached to the outer surface are maintained while maintaining the transparency of the road incidental facilities and the surface color, symbols, patterns, etc. As a self-cleaning road ancillary equipment in which the surface is relatively easily washed away by rainwater etc. and the surface is kept clean, for example, the surface of a sound insulating wall of a road or railway is covered with a semiconductor photocatalyst containing layer, The photocatalyst particles are formed of dispersed silicone, and the surface of the photocatalyst-containing layer is formed of a silicone derivative in which an organic group bonded to a silicon atom of a silicone molecule is at least partially substituted with a hydroxyl group by the action of the photocatalyst. The surface of the layer is hydrophilized as the photocatalyst is photoexcited by sunlight, and hydrophobic contaminants adhere to the surface of the sound insulation wall. Locked, or the sound insulating wall is road or railway sound insulating wall of dirt attached to the surface of the sound insulating wall is adapted to be washed away by rain water is disclosed when exposed to rain (e.g. Patent Document 1).

  On the other hand, as a transparent coating composition, a fluoroolefin-vinyl ether system having a fluorine content of 10% by weight or more based on fluoroolefin units and an intrinsic viscosity measured in tetrahydrofuran of 0.05 to 2.0 dl / g. A coating composition for synthetic resin having low solvent resistance, including a copolymer and a solvent containing 20% by weight or more of cyclohexanone is disclosed (for example, Patent Document 2).

Japanese Patent No. 3124491 Japanese Patent No. 2613202

  However, in the conventional self-cleaning road ancillary equipment as described in Patent Document 1, since the photocatalyst containing layer is formed on the outer surface, when the contained photocatalyst is irradiated with light and activated, the road ancillary equipment is When it is formed from a substance that is decomposed by the oxidation action of a photocatalyst such as a synthetic resin, it is necessary to provide a protective layer between the photocatalyst containing layer and the road incidental equipment, and the process involved in the formation is complicated. there were.

  In addition, when a transparent coating composition as described in Patent Document 2 is used, it is possible to perform coating by one coat and one bake, and although the process relating to the formation can be simplified, the road incidental equipment itself is a polycarbonate resin. If the surface of the road ancillary equipment is made of a material with low solvent resistance, such as a coating film made of synthetic resin on the outside of the road ancillary equipment, the base is eroded by the solvent and the road ancillary The transparency that the equipment should have and the color tone, symbols, patterns, etc. of the surface that should be seen through the coating layer may be impaired.

  The present invention has been made in view of the problems as described above, and it is possible to simplify the process related to the formation of the coating layer while expressing self-cleaning properties over a long period of time, and the surface of the road incidental equipment is solvent resistant. It is intended to provide a self-cleaning road incidental facility in which a coating layer is formed without hindrance even if it is low.

  In order to achieve the above object, the present invention is configured as follows. That is, in the self-cleaning road incidental facility according to the present invention, a transparent coating layer is formed on the outer surface of the road incidental facility, and the coating layer is a coating composition containing a hydroxyl group-containing fluororesin composition and an isocyanate curing agent. , Fluorosurfactant 0.01 to 1.0 parts by weight, UV absorber 1 to 15 parts by weight, organosilicate compound 1 to 30 parts by weight, and photocatalyst fine particles having a photocatalytic function per 100 parts by weight of resin solids It is formed using a clear coating composition containing 0.05 to 20 parts by weight.

  According to the self-cleaning road incidental equipment according to the present invention, the adhesion and high transparency can be maintained even if the coating layer is exposed to the outdoors for a long time, but the coating layer is formed by one coat and one bake on the outer surface of the road auxiliary equipment. It is possible to simplify the process related to the formation, and even if it is formed on the outer surface of the road auxiliary equipment having low solvent resistance, the surface is hardly damaged by the solvent, and the coating layer can be formed on the outer surface without any trouble. it can. Furthermore, high hydrophilicity is expressed by the blended photocatalyst fine particles, and high antifouling performance can be exhibited.

  The road incidental facility is a road sign post having a pole portion made of polyurethane resin, and on the pole via at least one primer selected from the group of urethane, epoxy and acrylic If the coating layer is formed, the primer provides high adhesion of the coating layer to the pole, and even if the primer has low solvent resistance, the primer is not attacked when the coating layer is formed. It is preferable that the color tone or the like that should be provided in the section can be reduced.

  Further, if the photocatalyst fine particles are such that a part of the surface is coated with a photocatalytic crystal by a protective substance that is inactive with respect to the photocatalytic function, the coating matrix is not easily decomposed by the photocatalytic function, and the photocatalyst fine particles are long-lasting. Self-cleaning can be achieved, and even if the surface of the road incidental equipment is fragile, the surface of the road auxiliary equipment can be decomposed by the photocatalyst fine particles, and a coating layer can be formed without hindrance. .

  In addition, if the covering layer is formed on the outer surface of the pole part and the outer surface of the reflection sheet attached to the pole part, in addition to the outer surface of the pole part, there is a problem that visibility is deteriorated due to adhesion of contaminants. In a reflective sheet that is often seen, even if the outer surface has low solvent resistance, the outer surface is not affected when the coating layer is formed, and the outer surface of the reflective sheet is provided with self-cleaning properties without impairing retroreflectivity. Can be preferable.

  The road incidental facility is a reflector having retroreflectivity, and a cover made of a transparent synthetic resin is formed on the reflective portion, and a cover layer is formed on the outer surface of the cover. Even when the synthetic resin forming the solvent has low solvent resistance, there is little risk of damaging the cover when the coating layer is formed, and it is preferable that the transparency of the cover is maintained and the retroreflectivity of the reflector is not impaired.

  The covering layer is formed on the outer surface of a transparent synthetic resin film, and the film is attached to the outer surface of the road incidental facility with the covering layer facing outside, so that the coating layer is formed on the road incidental facility. If it is formed, the outer surface can be easily used as a coating layer by simply sticking the film with the coating layer formed even if the road incidental equipment is existing. Even if the film has a low solvent resistance, it is preferable that the film is eroded when the coating layer is formed on the outer surface of the film and the transparency is impaired.

  In addition, the reflector has various shapes within the range where the substrate is bent as long as the reflecting portion is formed on one surface of the flexible substrate and the adhesive layer is formed on the other surface. It is preferable because it can be easily self-cleaning by sticking to the road incidental equipment and using the outer surface as a coating layer.

  According to the self-cleaning road incidental equipment according to the present invention, the adhesion and high transparency can be maintained even if the coating layer is exposed to the outdoors for a long time, but the coating layer is formed by one coat and one bake on the outer surface of the road auxiliary equipment. It is possible to simplify the process related to the formation, and even if it is formed on the outer surface of the road auxiliary equipment having low solvent resistance, the surface is hardly damaged by the solvent, and the coating layer can be formed on the outer surface without any trouble. it can.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

  FIG. 1 shows a first embodiment of a self-cleaning road incidental facility according to the present invention, in which (a) is a perspective view showing the whole, and (b) is a longitudinal sectional view showing details of an outer surface. First, in (a), the road incidental facility is a road sign pillar 1A, and the road sign pillar 1A is formed of a base part 1A2 fixed to the ground surface and a pole part 1A1 protruding upward from the base part 1A2. The reflection sheet 1A3 is wound over the pole portion 1A1 in three upper and lower stages. The pole portion 1A1 and the base portion 1A2 are made of polyurethane resin, and the pole portion 1A1 can be bent and restored by a vehicle collision or the like. Such a road sign pillar 1A generally has a pole portion 1A1 that has a vivid color tone of orange or green to enhance the attractiveness in the daytime, and is retroreflected when a vehicle headlamp or the like is irradiated by the reflective sheet 1A3. The road sign post 1A is generally provided along the side edge of the road, such as soot from the exhaust gas of automobiles, dust around the road, etc. Contaminants may adhere and the above-described attractiveness and visibility may be impaired.

  In (b), a two-component thermosetting urethane-modified acrylic primer layer 3A is formed on the outer surface of the pole portion 1A1, and a hydroxyl group-containing fluororesin composition and an isocyanate-based curing agent are further formed on the outer surface of the primer layer 3A. In the coating composition to be contained, 0.01 to 1.0 part by weight of a fluorosurfactant, 1 to 15 parts by weight of an ultraviolet absorber, 1 to 30 parts by weight of an organosilicate compound, and a photocatalyst per 100 parts by weight of the resin solid content A layer of 20 μm using a clear coating composition containing 0.05 to 20 parts by weight of photocatalyst fine particles in which a photocatalytic crystal is coated with a protective substance having a function and a part of the surface being inert to the photocatalytic function The coating layer 2 is formed with a thickness. The organosilicate compound contained in the coating layer 2 and the photocatalytic crystal in the photocatalyst fine particles exhibit a high degree of hydrophilicity on the surface of the coating layer 2, so that dust or dust adhering to the outer surface of the pole portion 1 A 1 By pouring down, it becomes easy to be washed away and the surface is kept clean.

  The reflective sheet 1A3 attached to the outer surface of the pole 1A1 is attached via a primer layer 3A. In general, the reflection sheet 1A3 has low adhesion to the polyurethane-based resin, and is adhered through a primer layer to ensure adhesion. On the other hand, the coating layer 2 alone is necessary and sufficient for the pole portion 1A1. Even if good adhesion is obtained, since the pole portion 1A1 is a flexible polyurethane resin, there is a possibility that the coating layer 2 may crack due to deformation of the pole portion 1A1. The primer layer 3A is formed on the entire pole portion 1A1, the coating layer 2 is formed on the primer layer 3A, and the reflection sheet 1A3 is adhered, so that the adhesion of the reflection sheet 1A3 is ensured and the coating layer 2 can improve the adhesion by interposing the primer layer 3A and reduce the possibility of cracking, etc., but when the primer layer 3A is formed on the outer surface of the pole portion 1A1, only the sticking portion of the reflective sheet 1A3 is applied. There is no need to separate them, and a primer can be applied to the entire outer surface of the pole portion 1A1 to further simplify the process.

  The primer for forming the primer layer 3A on the outer surface of the pole portion 1A1 is not particularly limited as long as high adhesion to the polyurethane resin and the coating layer can be obtained. Moisture-curable urethane primer, 1-component or 2-component thermosetting urethane primer, 2-component epoxy deformation urethane-based primer, 2-component moisture-curable epoxy resin, etc. can be suitably used. For example, if the pole part 1A1 is made of a urethane resin, high adhesion and followability to the pole part 1A1 can be obtained by using a urethane-modified acrylic primer, resulting in high durability. Can be.

  Further, the same coating layer 2 may be provided on the surface of the reflection sheet 1A3. The reflection sheet 1A3 is formed by providing a cover 1A32 on the glass bead reflector 1A31, and the cover layer 2 is provided on the surface of the cover 1A32 with a film thickness of about 20 μm. Due to the organosilicate compound contained in the surface, hydrophilicity is expressed on the surface of the coating layer 2, so that dust, dust, etc. adhering to the outer surface of the pole part 1A1 are easily washed away by rain water, etc. It will be kept clean. The coating layer 2 may be formed after applying a primer in the same manner as the pole portion 1A1, but when the surface of the reflective sheet 1A3 is formed of a material having active hydrogen such as polyolefin resin. The coating layer 2 can also be formed by directly applying the clear coating composition to the surface of the reflective sheet 1A3.

The photocatalytic crystal is not particularly limited as long as it exhibits a photocatalytic function and can be hydrophilized. Fe ₂ O ₃ , Cu ₂ O, In ₂ O ₃ , WO ₃ , Fe ₂ TiO ₃ , PbO Metal oxide semiconductor materials such as V ₂ O ₅ , FeTiO ₃ , Bi ₂ O ₃ , Nb ₂ O ₃ , SrTiO ₃ , ZnO, BaTiO ₃ , CaTiO ₃ , KTaO ₃ , SnO ₂ , ZrO ₂ may be used. Titanium oxide, which is relatively inexpensive and easy to handle, is preferably used. Among titanium oxides, anatase type titanium dioxide having high activity is preferable.

  In addition, since the organosilicate compound is contained, the hydrophilicity of the photocatalytic crystal once expressed can be maintained, and the hydroxyl group-containing fluororesin composition as a main component in the coating layer 2 in a fluid state when the coating layer 2 is formed. The organosilicate compound that repels the hydroxyl group contained in the product is oriented near the surface. At this time, the organosilicate compound pushes the photocatalyst particles together with the surface, thereby increasing the amount of photocatalyst particles near the surface. Can also be expected. Since the photocatalytic crystal used in such a state is difficult to move in the coating layer 2 in a fluid state if the particle size is too large, it is preferable to use a photocatalytic crystal having a particle size of about 0.1 μm to 5 μm.

  In addition, if titanium oxide or titanium oxide in which a part of a titanium atom or oxygen atom is substituted with a nitrogen atom and / or a sulfur atom is used as a photocatalytic crystal, a high photocatalytic function is developed by utilizing not only ultraviolet light but also visible light. be able to. Furthermore, those obtained by introducing metal ions such as iron and copper into the nitrogen-doped and / or sulfur-doped titanium oxide fine particles to further enhance the photocatalytic function can be suitably used. In addition, when the metal resin laminate is used indoors, the photocatalytic crystal that exhibits a high photocatalytic function with respect to visible light is used to prevent the photocatalytic function from appearing even in an environment where ultraviolet light is not irradiated. It may be possible to demonstrate soiling performance.

  Protective substances covering a part of the surface of the photocatalytic crystal include montmorillonite, talc, silica gel, silica sol, silicate, silicon carbide, alumina, zeolite, zirconia, ceramics, apatite, titanium apatite, magnesia, cordierite, sepiolite , Calcium hydroxide, or a complex thereof. Among these, the photocatalyst can be easily attached to the photocatalytic crystal and repels the hydroxyl group contained in the hydroxyl group-containing paint vehicle resin. Porous silica that can promote the floating of the fine particles to the surface of the coating layer 1 can be suitably used. These substances are kneaded with a photocatalytic crystal by a mixer, or dispersed in a solvent such as water, and the photocatalytic crystal is immersed in the solution for an appropriate period of time, so that a protective substance is scattered on the surface of the photocatalytic crystal. It can be formed by, for example, precipitating into a crystalline form or precipitating into a net structure of a mask melon.

  2A and 2B show a second embodiment of the self-cleaning road incidental equipment according to the present invention, wherein FIG. 2A is a perspective view showing the whole, and FIG. 2B is a cross-sectional view showing details of a cross section. First, in (a), the road incidental facility is a protective fence 1B, which is formed by attaching a vertical lattice panel 1B2 formed by welding pipes between columns 1B1 erected at intervals on the ground surface. Is. The struts 1B1 and the vertical lattice panel 1B2 are coated on the outer surface of a galvanized steel pipe using a polyester resin powder paint. Paints are generally used in places with high lightness, such as white, in places where it is necessary to increase the attractiveness, and in places where it is necessary to consider the surrounding landscape, such as in urban areas, the brightness is low, such as dark brown Colored ones are often used. However, these protective fences 1B are often installed around the road, and as in the case of the road sign post 1A, pollutants such as soot and dust from the exhaust gas of automobiles and dust around the road are attached. There is a risk that the above-described attractiveness and scenery may be impaired.

  Next, (b) is a cross-sectional view of the vertical grid portion of the vertical grid panel 1B2 of (a), and the outer surface of the galvanized steel pipe 1B3 is coated with a polyester resin powder coating with a thickness of 80 to 100 μm. A layer 3B is formed, and a coating layer 2 having a thickness of 20 μm is formed on the outer surface of the coating layer 3B using the same clear coating composition as in the first embodiment. The polyester resin has a relatively low solvent resistance, but the coating layer 2 according to the present invention does not attack the polyester resin, and does not impair the color tone and design that should be expressed by painting. The color tone of 1B is made visible through the coating layer 2. The organosilicate compound contained in the coating layer 2 and the photocatalytic crystals in the photocatalyst fine particles exhibit a high degree of hydrophilicity on the surface of the coating layer 2, and contaminants adhering to the outer surface can be easily washed away by rainwater. To be made. The covering layer 2 may be formed only on the vertical lattice panel 1B2 where the degree of attractiveness and scenery due to the adhesion of contaminants is large, or it is also formed on the support column 1B1 to express self-cleaning in the entire protective fence 1B. You may do it.

  FIG. 3 shows a third embodiment of the self-cleaning road incidental equipment according to the present invention, in which (a) is a perspective view showing the whole, and (b) is a cross-sectional view showing details of a cross section. As shown in (a), the road incidental facility is a balustrade 1C, which is formed by passing a cross beam 1C2 between pillars 1C1 erected from the ground surface at intervals like the guard fence 1B. Painted with polyester resin powder paint. As in the above-described embodiment, the railing 1C is often installed around the road, and pollutants such as soot and dust from the exhaust gas of automobiles adhere to the road, and the above-described attractiveness and landscape However, if the covering layer 2 is formed on the outer surface of the support column 1C1 or the cross beam 1C2, the contaminants that are hydrophilic on the outer surface and adhere to the outer surface are poured into the rainwater. It is designed to be easily washed away. As shown in (b), by providing the coating layer 2 on the outer surface of the coating layer 3B formed on the cross beam 1C2, the organo contained in the coating layer 2 without impairing the color tone or design of the coating layer 3B. Due to the photocatalytic crystal in the silicate compound and the photocatalyst fine particles, high hydrophilicity is expressed on the surface of the coating layer 2, so that dust or dust adhering to the outer surface of the pole portion 1A1 is washed away by pouring rain water or the like. It becomes easier and the surface is kept clean.

  The coating to which the coating layer according to the present invention is applied is not limited to polyester resin powder paints, and can be applied regardless of solvent type or powder type, fluororesin type coating, epoxy resin type It can be used for painting, urethane resin coating, acrylic resin coating, and the like.

  FIG. 4: shows 4th embodiment of the self-cleaning road incidental equipment concerning this invention, (a) is a perspective view which shows the whole, (b) is sectional drawing which shows the detail of a cross section. In (a), a road incidental facility is a translucent soundproof panel 1D, a frame 1D2 made of an aluminum alloy extruded shape is formed in a frame shape, and a transparent polycarbonate resin made of a transparent polycarbonate resin is formed inside the frame 1D2. A face plate 1D1 is provided. The soundproof panel 1D is installed along the side edge of the road and prevents the road noise from propagating to the surroundings. By using the transparent face plate 1D1, it is possible to obtain not only sound insulation but also daylighting and viewability. However, if contaminants adhere to the face plate 1D1, the advantages of using the transparent face plate 1D1 are impaired.

  (B) is a cross-sectional view of the face plate 1D1, a translucent primer layer 3D is formed on the outer surface of the face plate 1D1, and the same coating layer 2 as in the first embodiment is formed on the primer layer 3D with a film thickness of 20 μm. It is formed with. The organosilicate compound contained in the coating layer 2 and the photocatalytic crystal in the photocatalyst fine particles exhibit a high degree of hydrophilicity on the surface of the coating layer 2, and soot and dust adhering to the outer surface of the face plate 1 </ b> D <b> 1 fall into rainwater. It is easy to be washed away by being poured, and the surface is kept clean so that the daylighting and viewability can be maintained. The material for forming the face plate 1D1 is not limited to polycarbonate resin, and acrylic resin, polyethylene terephthalate resin, or the like may be used. In order to provide the primer layer 3D, it can be formed using the primer shown in the first embodiment. Alternatively, the coating layer 2 can be formed by directly applying the clear coating composition to the face plate 1D1 subjected to the UV treatment without providing the primer layer 3D.

  FIGS. 5A and 5B show a fifth embodiment of the self-cleaning road incidental equipment according to the present invention, wherein FIG. 5A is a perspective view showing the whole, and FIG. 5B is a cross-sectional view showing details of a cross section. In (a), the road incidental facility is a line-of-sight guide mark 1E installed at an appropriate interval on the side edge of the road, and the line-of-sight guide mark 1E is applied to the guide specimen 1E3 attached to the upper end of the column 1E2 to the prism reflector. The retroreflector 1E1 is embedded and formed. If the contaminants adhere to the retroreflector 1E1, the performance of the visual guidance mark 1E is significantly impaired as a result of the retroreflection of the vehicle headlamp. In order to remove such adhering contaminants, conventionally, a wiper rotating by wind pressure or a photocatalyst containing layer was provided, but in the former, the wiper was damaged or the wiper or the retroreflector was worn. Concerned about the latter, the cost associated with formation was difficult.

  In (b), a primer layer 3E is formed on the outer surface of a transparent polycarbonate resin cover 1E12 that covers the prism reflector 1E11 of the retroreflector 1E1, and the cover layer 2 is 20 μm on the cover 1E12 via the primer layer 3E. It is provided with a film thickness. The coating layer 2 is the same as that shown in the first embodiment, and the primer layer 3E can be the same as that shown in the first embodiment. Further, as shown in the fourth embodiment, the cover layer 2 may be directly formed after the cover 1E12 is subjected to UV treatment or the like. The organosilicate compound and the photocatalytic crystal in the photocatalyst fine particles contained in the coating layer 2 exhibit high hydrophilicity on the surface of the coating layer 2, so that dust, dust, etc. attached to the outer surface of the retroreflector 1E1 As a result, the surface is kept clean and the light transmission is maintained, so that the gaze induction effect can be maintained. Further, the coating layer 2 can provide hydrophilicity at a lower cost than the provision of the photocatalyst-containing layer without worrying about wear of the retroreflector 1E1 and the like.

  FIG. 6 is a sectional view showing a film applied to a self-cleaning road incidental facility according to the present invention. The film 1F is formed by providing the coating layer 2 directly on one surface of the base material 1F1 made of a transparent polyolefin-based synthetic resin, and the transparent adhesive layer 1F2 is provided on the other surface so that the whole is transparent. It was made. The coating layer 2 is formed by directly applying the same clear coating composition as in the first embodiment to the surface of the substrate 1F1, and the coating layer 2 has a thickness of about 20 μm. Adhering such film 1F to the sign surface of the sign plate, the light-transmitting sound insulation wall, the display surface of the sign, the roof surface of the shelter, etc., using the adhesive layer 1F2, impairs the function of the existing road incidental facilities. The coating layer 2 is easily formed on the outer surface, and high hydrophilicity is expressed on the surface of the coating layer 2 by the organosilicate compound contained in the coating layer 2 and the photocatalytic crystal in the photocatalyst fine particles. The dust, dust, etc. adhering to the surface can be easily washed away by rainwater and the like, and the surface can be kept clean.

It is explanatory drawing which shows 1st embodiment of the self-cleaning road incidental equipment concerning this invention. It is explanatory drawing which shows 2nd embodiment of the self-cleaning road incidental equipment concerning this invention. It is explanatory drawing which shows 3rd embodiment of the self-cleaning road incidental equipment concerning this invention. It is explanatory drawing which shows 4th embodiment of the self-cleaning road incidental equipment concerning this invention. It is explanatory drawing which shows 5th embodiment of the self-cleaning road incidental equipment concerning this invention. It is sectional drawing which shows the film applied to the self-cleaning road incidental equipment concerning this invention.

Explanation of symbols

1A Road incidental facilities (road sign pillars)
1B Road incidental equipment (protective fence)
1C Road incidental facilities (handrail)
1D road incidental equipment (soundproof panel)
1E Road incidental equipment (Gaze guidance mark)
2 Coating layer 3 Primer layer

Claims (7)

A transparent coating layer is formed on the outer surface of a road ancillary equipment, and the coating layer contains a hydroxyl group-containing fluororesin composition and an isocyanate curing agent. Clear coating containing 0.01 to 1.0 part by weight of an agent, 1 to 15 parts by weight of an ultraviolet absorber, 1 to 30 parts by weight of an organosilicate compound, and 0.05 to 20 parts by weight of photocatalyst fine particles having a photocatalytic function A self-cleaning road incidental facility characterized by being formed using a composition. The self-cleaning road incidental facility according to claim 1, wherein a part of the surface of the photocatalyst fine particles is coated with a photocatalytic crystal with a protective substance that is inert to the photocatalytic function. The road incidental facility is a road sign pillar having a pole portion made of polyurethane resin, and is covered on the pole via at least one primer selected from the group of urethane type, epoxy type and acrylic type The self-cleaning road incidental facility according to claim 1 or 2, wherein a layer is formed. The self-cleaning road incidental facility according to claim 3, wherein the covering layer is formed on an outer surface of the pole portion and an outer surface of a reflection sheet attached to the pole portion. The road incidental facility is a reflector having retroreflectivity, wherein a transparent synthetic resin cover is formed on the reflective portion, and a covering layer is formed on the outer surface of the cover. The self-cleaning road incidental facility according to claim 1 or 2. The covering layer is formed on the outer surface of a transparent synthetic resin film, and the film is attached to the outer surface of the road incidental facility with the covering layer facing outside, thereby forming the coating layer on the road incidental facility. The self-cleaning road incidental facility according to claim 1 or 2, wherein the facility is self-cleaning road. 3. The reflector according to claim 1, wherein a reflective part is formed on one surface of a flexible substrate, and an adhesive layer is formed on the other surface. 4. Self-cleaning road incidental facilities.

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