JP2000271534A - Coated resin part for automobile with phosphorescent properties, coating method, and coating material used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coated resin part for an automobiles which is visible in a dark place and has good water resistance, adhesion of a coating film, and durability by coating the surface of a resin substrate for an automobiles with a base coating film containing a phosphorescent pigment subjected to a phosphoric acid-based treatment. SOLUTION: A base coating film is formed as an undercoating film by coating the surface of a resin substrate for an automobiles with a base coating material containing a phosphorescent pigment presubjected to a phosphoric acid-based treatment. Thus, a stable visibility in a dark place is assured, and the water resistance and adhesion between coating films are enhanced. A phosphorescent pigment mainly comprising strontium aluminate is suitable. The content of the pigment in the base coating material is preferably 10-70 wt.% of the solid content in the base coating material. A clear coating film formed on the base coating film may contain a transparent delustering agent, preferably in an amount of 40 wt.% or lower of the solid content of the clear coating film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coated article of an automobile resin part which makes it possible to visually recognize the presence of an automobile part and the like in a dark place, a method of coating the same, and a paint used for the same.

[0002]

2. Description of the Related Art Conventionally, when operating automobile parts such as a switch such as a hazard lamp or an air conditioner or a ventilator at night, especially when driving an automobile, the visibility is poor without an interior light and an erroneous operation is performed. There was sometimes. In general, in order to prevent erroneous operation in a dark place, a known luminous paint, a luminescent paint or a fluorescent paint is directly applied to an automobile part or an automobile body, or a seal or the like coated with the paint is attached to an automobile part or the like. Or have been done. However, the luminous paint composed of a calcium sulfide phosphor, a zinc sulfide phosphor, or the like, temporarily accumulates light such as sunlight or light of an electric light, emits light, has a short light emission time, and has a short light emission on a cloudy day. When the amount of light to be stored is small as described above, there is a problem that the emitted light becomes weak. Also,
Since the luminescent paint contains a trace amount of radioactive substances such as promethium, it has a problem that it is expensive, has strict regulations on its use, and is difficult to recycle. In addition, since the fluorescent paint emits light upon receiving ultraviolet light, there is a problem that the fluorescent paint does not emit light when no ultraviolet light is present. Furthermore, when stickers etc. are pasted,
There has been a problem that the adhesive layer deteriorates and peels off over time.

As a solution to these problems, a paint containing a luminous pigment mainly composed of strontium aluminate is reported in JP-A-10-6876. However, when a coating film is obtained by using this coating material for an automobile part or the like, there is a problem that water resistance is insufficient, adhesion of the coating film is reduced, and peeling is likely to occur. By the way, in the case of interior parts of automobiles, it is sometimes desirable to make the coating film of interior parts matte from the viewpoint of antiglare properties and design properties.In this case, silica is used as a matting agent. It is common to paint with the contained paint. However, when the luminous pigment and a matting agent having no transparency such as silica are used in combination, there arises a problem that the luminous ability is significantly reduced.

[0004]

Accordingly, an object of the present invention is to secure stable visibility in a dark place, to have good water resistance, and to have excellent adhesion of a coating film. An object of the present invention is to provide a coated resin article for automobiles having durability. It is still another object of the present invention to provide an automobile resin component coated article capable of imparting a matting property for use in automobile interiors.

[0005]

Means for Solving the Problems The present inventor has made intensive studies to solve the above-mentioned problems. As a result, a phosphoric acid-based treatment is applied to the phosphorescent pigment, which has excellent luminous properties to ensure stable visibility in a dark place, but has low water resistance of the obtained coated product and poor adhesion between the coating films. As a result, it has been found that the water resistance and the adhesion of the coating film obtained can be improved. Furthermore, by including a transparent matting agent in a transparent clear coating film provided on the surface of a painted object, a resin for automobiles having both a luminous property and a matting property, which is suitable for automotive interior use. We have found that we can get painted parts. Then, the present invention has been completed.

That is, the coated resin article for automobiles according to the present invention comprises at least a base coating film containing a phosphorescent-treated phosphorescent pigment as an undercoat coating film on the surface of the resin substrate for automobile. And a transparent clear coating film on the base coating film. The base paint for resin parts for automobiles of the present invention contains a phosphorescent pigment which has been subjected to a phosphoric acid treatment.

[0007] The coating method for resin parts for automobiles of the present invention comprises:
On the surface of a resin substrate for automobiles, at least a base coat of the present invention is applied as an undercoat coat to form a base coat, and a transparent clear coat is applied over the base coat to form a clear coat. Is formed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail. The automotive resin part coated product of the present invention includes at least a base coating film obtained by applying a base coating material containing a phosphorescent pigment subjected to a phosphoric acid treatment on the surface of an automotive resin base material as an undercoat coating film. Things. By providing a base coat containing a phosphorescent pigment that has been treated with phosphoric acid as an undercoat coat, it provides stable visibility in the dark and improves water resistance and adhesion between coats. Can be.

The base paint according to the present invention comprises a phosphorescent pigment,
It is prepared using a binder resin, a solvent, and, if necessary, various additives. The phosphorescent pigment contained in the base paint of the present invention is not particularly limited as long as it has been subjected to a phosphoric acid-based treatment, and a phosphorescent pigment usually used in the field of coating can be used. Specifically, for example, those composed of strontium aluminate, calcium aluminate, zinc sulfide, calcium sulfide and the like can be mentioned.

As the phosphorescent pigment, a phosphorescent pigment containing strontium aluminate as a main component is particularly preferable.
According to strontium aluminate, since it does not contain harmful substances such as radioactive substances, it is safe for the human body and the environment,
Recycling is also possible. In addition, strontium aluminate has the advantage of emitting light better as the irradiation light is stronger, having higher afterglow luminance and longer afterglow time, and has a wide wavelength range of light for exciting light emission. It emits light surely by various lights such as light of moon and moon. Strontium aluminate is made of high-purity alumina as a main material, mixed with strontium carbonate and a rare earth element as an activator, fired in an electric furnace under a reducing atmosphere for about 3 hours or more, cooled, and fired. It is obtained by pulverizing and classifying the aggregate.

In the present invention, the phosphoric acid-based treatment applied to the luminous pigment is performed using, for example, a phosphate compound such as ammonium phosphate. By the phosphoric acid treatment, it is possible to obtain a coated product having good water resistance and excellent adhesion between the coating films. The content of the luminous pigment contained in the base paint of the present invention is preferably 10 to 70% by weight based on the solid content in the base paint,
More preferably, the content is 20 to 50% by weight. When the content of the luminous pigment is within the above range, a good luminous property can be imparted to the obtained automotive resin component coated product. When the content of the luminous pigment exceeds 70% by weight, the adhesion to the coating film layer to be laminated tends to decrease. On the other hand, when the content of the luminous pigment is less than 10% by weight, sufficient luminous property is obtained. It is not preferable because it is difficult to be performed.

The average particle size of the luminous pigment is not particularly limited, but is preferably 50 μm or less, more preferably 20 μm or less, in consideration of the appearance of the resulting coating.
m or less is good. The coated automotive resin part of the present invention is provided with a transparent clear coating film obtained by applying a transparent clear coating material on the base coating film. By providing a transparent clear coating on the surface of the painted object,
The surface of the coating can be smoothed and gloss can be imparted.

The transparent clear coating is prepared by using a binder resin, a solvent, and, if necessary, various additives. The clear coating of the present invention must have transparency in order to effectively exhibit the luminous properties of the obtained coating. In the present invention,
The clear paint may contain a transparent matting agent. By adding an appropriate matting agent, for example, when it is desired to make matting from the viewpoint of antiglare properties and design properties in automobile interior parts, the gloss of the clear coating film is adjusted, Matting properties can be obtained.

The matting agent is not particularly limited as long as it has transparency, and may be appropriately selected in consideration of the scratchability, tactile sensation, design, and the like of the clear coating film. For example, transparent resin beads made of fine powder such as polymethyl methacrylate, polystyrene, polyacrylate, polyacrylonitrile, and polyurethane are preferably used.

In the present invention, the content of the matting agent with respect to the solid content of the clear paint is preferably 40% by weight or less. When the content of the matting agent is more than 40% by weight, the luminous property of the obtained coated product tends to decrease. In the present invention, the base coating film may be formed directly on the resin substrate for automobiles, but as a base coat of the base coating film, a pre-base coating film coated with a pre-base coating material containing a coloring pigment is used. It may be formed under the base coating film. By providing a pre-base coating film containing a coloring pigment, it is possible to color a coated resin article for automobiles into a desired color. The color pigment is not particularly limited, and a known color pigment generally used in the field of coating can be used. Examples thereof include inorganic pigments such as titanium oxide, iron oxide yellow, and red iron oxide, and organic pigments such as phthalocyanine blue, phthalocyanine green, quinacridone red, and fast yellow.

Further, in the present invention, a primer coating obtained by applying a primer paint to an automotive resin base material is formed as an undercoat film between the resin base material for automobiles and the pre-base coating film or the base coating film. You can also keep. By selecting an appropriate primer coating having excellent adhesiveness with the resin base material for automobiles and providing a primer coating, the adhesion between the resin base material for automobiles and the pre-base coating or the base coating is improved. Can be improved. The selection of the primer paint, if the resin substrate for automobiles is a plastic substrate, what is necessary is just to select a resin composed of the same type of resin that constitutes the plastic, for example,
When the automotive resin substrate is a polyolefin-based substrate such as polypropylene, it is preferable to use a primer coating containing a polyolefin-based resin.

In the present invention, as each binder resin contained in the base paint, the clear paint, and the pre-base paint, a resin generally used as a film-forming resin can be used. Resin, vinyl chloride-vinyl acetate copolymer resin, polyimide resin, urethane resin, polyester resin, melamine resin and the like.

As the binder resin in the present invention,
Among the above examples, particularly, an acrylic urethane resin and an acrylic melamine resin are preferably used. Acrylic / urethane resin is an acrylic polyol,
It is a resin containing a polyisocyanate curing agent having a blocked or unblocked isocyanate group as an essential component. The acryl-melamine resin is a resin containing an acrylic polyol and a melamine resin as essential components. By using an acrylic / urethane-based resin or an acrylic / melamine-based resin, it is possible to obtain a coating film having excellent finished appearance and excellent performance such as chemical resistance and weather resistance.

Examples of the acrylic polyol include a hydroxyl group-containing unsaturated monomer such as 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate and hydroxybutyl (meth) acrylate; Examples include polymers obtained by copolymerizing a lactone-modified unsaturated monomer obtained by adding a lactone such as ε-caprolactone to a saturated monomer with another monomer. Here, as other unsaturated monomers,
For example, methyl (meth) acrylate, ethyl (meth)
Acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, n-octyl ( Meth) acrylate, lauryl (meth) acrylate, tridecyl (meth) acrylate, stearyl (meth) acrylate,
Examples include styrene, styrene derivatives, acrylonitrile, acrylamide, vinyltoluene, vinyl acetate, glycidyl methacrylate, acrylic acid, and methacrylic acid.

The hydroxyl value of the acrylic polyol is as follows:
30-250mg from the viewpoint of physical properties of the coating film such as moisture resistance and water resistance
It is preferably KOH / g. Further, the acid value of the acrylic polyol is preferably 1 to 50 mgKOH / g from the viewpoints of crosslinkability, moisture resistance of the coating film, water resistance and the like. The acrylic polyol has a number average molecular weight of 2 from the viewpoint of coating film properties, coating workability, finished appearance, and the like.
It is preferably from 000 to 30,000. The glass transition temperature (Tg) of the acrylic polyol is -20 from the viewpoint of adhesion between coating layers, coating film hardness and contamination.
The temperature is preferably from 100C to 100C.

The polyisocyanate curing agent functions as a cross-linking agent and is preferably non-yellowing in view of weather resistance. Use of a non-yellowing polyisocyanate curing agent conventionally known in the field of paints is preferred. Can be. Specifically, for example, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, tolylene diisocyanate, hydrogenated tolylene diisocyanate, lysine diisocyanate, etc. Non-yellowing polyisocyanate curing agent; nurate form of the above-mentioned polyisocyanate compound; burette form; adduct of the above-mentioned polyisocyanate compound with a polyol such as ethylene glycol, propylene glycol or trimethylolpropane; Polyisocyanate curing agent; and the like. These polyisocyanate curing agents may be used alone, or may be used in combination of two or more polyisocyanate curing agents in order to balance the curability of the paint and the physical properties of the coating film, or may be used to cure the polyisocyanate. An agent and a melamine resin may be used in combination.

Examples of the isocyanate blocking agent for blocking the isocyanate group of the polyisocyanate curing agent include phenols such as phenol, m-cresol, xylenol and thiophenol; methanol, ethanol, butanol, 2-ethylhexanol and cyclohexane. Alcohols such as hexanol and ethylene glycol monomethyl ether; active hydrogen-containing compounds such as caprolactam, ethyl acetoacetate and diethyl malonate; and the like.

In the acrylic / urethane resin containing the acrylic polyol and the polyisocyanate curing agent as essential components, the ratio of the hydroxyl group in the acrylic polyol component to the isocyanate group in the polyisocyanate curing agent component is as follows: [Isocyanate group] / [hydroxyl group]
Is preferably 0.5 to 2.0, and more preferably 0.75 to 1.5. When the equivalent ratio is less than 0.5, the amount of the crosslinking agent becomes insufficient and crosslinking becomes insufficient, so that the physical properties and chemical resistance of the obtained coated product tend to be inferior. If it exceeds, the drying properties of the coating film may be poor, and the hardness of the coating film may decrease.

The melamine resin, which is one of the essential components of the acryl-melamine resin, functions as a crosslinking agent, and examples thereof include methylated melamine, n-butylated melamine, and isobutylated melamine. In the acrylic melamine resin containing the acrylic polyol and the melamine resin as essential components, the mixing ratio of the acrylic polyol and the melamine resin is such that acrylic polyol / melamine resin = 60/40 to 90/10
(Weight ratio). When the amount of the melamine resin exceeds 40 (weight ratio), the appearance of the obtained coating film tends to deteriorate, while the amount of the melamine resin is 10 (weight ratio).
If it is less than the above, crosslinking is insufficient, and the physical properties and chemical resistance of the obtained coated product tend to be poor.

Each of the binder resins contained in the base paint, the clear paint, and the pre-base paint may be one of the binder resins exemplified above, or may be a mixture of two or more. Good. Further, the binder resin contained in the base paint, the binder resin contained in the pre-base paint, and the binder resin contained in the clear paint may be the same or different, respectively. From the viewpoint of adhesion, it is preferable to use the same kind of binder resin.

In the present invention, the solvents contained in the base paint, the clear paint, and the pre-base paint include:
Each may be appropriately selected in consideration of the type of the coating film layer serving as a base, and specifically, for example, toluene, xylene, n-hexane, cyclohexane, methyl acetate, ethyl acetate, isopropyl acetate, and n-acetate Propyl, acetic acid n
-Butyl, isobutyl acetate, methanol, ethanol,
n-propyl alcohol, isopropyl alcohol, n
-Butyl alcohol, isobutyl alcohol, secondary butyl alcohol, acetone, methyl ethyl ketone, methyl isobutyl ketone, propylene glycol, monomethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether,
Propylene glycol monoethyl ether acetate,
Examples include ethylene glycol monomethyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether, ethylene glycol monoethyl ether acetate, and aromatic hydrocarbon solvents.

In the present invention, the additives contained in the base paint, the clear paint, and the pre-base paint include, for example, a plasticizer, a dispersant, a thickener, an ultraviolet absorber,
Examples include light stabilizers, antioxidants, surface conditioners, curing catalysts, and the like. The form of each of the paints in the present invention is not particularly limited, and organic solvent type, non-aqueous dispersion type, aqueous solution type, aqueous dispersion type, high solid type, and powder paints are used. can do.

In the present invention, the thickness of each coating film layer formed is not particularly limited, but the thickness of the base coating film is in the range of 10 to 30 μm, and the thickness of the clear coating film is 2 μm.
Within the range of 0 to 50 μm, the thickness of the pre-coated film is 20 to
In the range of 50 μm, and the thickness of the primer coating is 5 to
It is preferable that it is within the range of 20 μm. The automotive resin substrate in the present invention is not particularly limited,
Usually, it is common to use a plastic substrate.
The material of the plastic substrate is not particularly limited, and examples thereof include polyurethane, polypropylene, ABS resin (acrylonitrile-butadiene-styrene copolymer), polycarbonate, acrylic resin, and polyester resin.

The method for coating a resin part for an automobile according to the present invention comprises:
Paint the base paint on the surface of the resin substrate for automobiles,
At least a base coating film is formed as an undercoat coating film, and the transparent clear paint is applied over the base coating film to form a clear coating film. Further, as described above, if necessary, the pre-base coating film or the primer coating film can be formed as an undercoat coating film. According to this method, it is possible to obtain an automotive resin component coated product that can exhibit stable visibility in a dark place and is excellent in water resistance and adhesion between coating films.

In the method for coating resin parts for automobiles of the present invention, the means for coating when forming each coating layer is not particularly limited, and the form of the paint used and the surface of the resin base material for automobiles are not limited. What is necessary is just to select suitably considering a shape etc. Specifically, for example, conventionally known methods such as spray coating, roller coating, brush coating, and electrostatic coating can be employed.

In the method of coating a resin part for an automobile according to the present invention, when each coating layer is successively applied, one coating layer is applied and cured, and then the next coating layer is applied. Alternatively, so-called wet-on-wet coating in which one coating layer is applied and then the next coating layer is applied without being cured may be used. In general, in order to obtain a good appearance, it is preferable to cure once each time coating is performed.For example, when a pre-coated coating is applied on a primer coating, When a clear coating film is applied over the coating film, a good appearance can be obtained even by using wet-on-wet coating.

In the method of coating resin parts for automobiles of the present invention, the temperature at which each coating layer is cured may be appropriately set according to the type of curing agent used. The temperature is preferably from room temperature to 120 ° C. in the case of a two-pack type paint, 70 to 200 ° C. in the case of using blocked isocyanate, and 100 to 200 ° C. in the case of using melamine.

[0033]

EXAMPLES Examples and comparative examples according to the present invention will be described below, but the present invention is not limited by these examples. Various properties of the coated articles obtained in the following Examples and Comparative Examples were evaluated by the following methods.

[Adhesion] The adhesion of the coated object is measured in accordance with JIS K
It measured according to 5400. Of the 100 squares, those without any peeling were rated as ○, and those with one or more peeled were rated x. [Gloss] The gloss of the coated product was measured according to JIS K5400. That is, the glossiness of the 60-degree coated surface was measured using a gloss meter.

[Afterglow luminance] The coated article was irradiated with 400 lx illuminance for 20 minutes using a D65 ordinary light source, and the afterglow luminance was measured 10 minutes later. [Water resistance] The paint is immersed in warm water of 40 ° C for 240 hours,
The appearance and adhesiveness after the removal were evaluated. Regarding the external appearance, 塗装 indicates that there was no abnormality such as wrinkles, blisters, cracks, and peelings on the painted surface, and X indicates that abnormalities were observed. The adhesion was evaluated in the same manner as described above.

Example 1 ABS (acrylonitrile
(Butadiene / styrene copolymer) A paint (trade name "R-248EV1 Color Base"; manufactured by Nippon Bee Chemical Co., Ltd.) made of an acrylic / urethane-based resin containing a yellow pigment as a pre-base paint on a substrate with a dry film thickness 30 μm
And dried at 80 ° C. for 40 minutes to form a pre-base coating film. On this pre-base coating film, a paint (trade name “R-2”) made of acrylic urethane resin
41MB "(manufactured by Nippon Bee Chemical Co., Ltd.), to which a phosphorescent pigment mainly containing strontium aluminate treated with ammonium phosphate is added so that the content with respect to the solid content of the base coating film is 25% by weight. The base paint prepared as described above was applied to a dry film thickness of 20 μm. Further, a wet-on-wet transparent clear paint (trade name “R-246 Clear”; Nippon Bee Chemical Co., Ltd.)
Co., Ltd.) to a dry film thickness of 30 μm,
For 40 minutes to form a base coating film and a clear coating film to obtain a coated product. Adhesion, gloss,
Table 1 shows the evaluation results of afterglow luminance and water resistance.

Example 2 Polypropylene-based primer paint (trade name “RB-193 Primer”, manufactured by Nippon Bee Chemical Co., Ltd.) was used as a base material of polypropylene before forming a pre-base coating film using polypropylene as a base material. A coated product was obtained in the same manner as in Example 1 except that the coating was performed so as to have a dry film thickness of 10 μm, and then the pre-base coating was applied wet-on-wet. Table 1 shows the evaluation results of the adhesion, gloss, afterglow luminance, and water resistance of the obtained coated product.

[Example 3] A transparent matting agent (trade name "Art Pearl G-8") was added to the clear paint used in Example 1.
00 "; manufactured by Negami Industry Co., Ltd .;
Except for using a clear paint prepared by adding the content to the clear coating film solid content to be 20% by weight,
A coated product was obtained in the same manner as in Example 1. Table 1 shows the evaluation results of the adhesion, gloss, afterglow luminance, and water resistance of the obtained coated product.

Example 4 A coated article was obtained in the same manner as in Example 1 except that the content of the luminous pigment in the base coating material was 50% by weight based on the solid content. Table 1 shows the evaluation results of the adhesion, gloss, afterglow brightness, and water resistance of the obtained coated product.
Shown in [Comparative Example 1] A coated article was obtained in the same manner as in Example 1, except that the phosphorescent pigment in the base paint was changed to a phosphorescent pigment mainly containing strontium aluminate that had not been subjected to a phosphoric acid treatment. Was. Table 1 shows the evaluation results of the adhesion, gloss, afterglow luminance, and water resistance of the obtained coated product. [Comparative Example 2] Coating was performed in the same manner as in Example 1 except that hydrophobic silica (trade name “Nip Seal SS-50”; manufactured by Nippon Silica Industry Co., Ltd.) was used as a matting agent in the clear paint. I got something. Adhesion, gloss,
Table 1 shows the evaluation results of afterglow luminance and water resistance.

[0040]

[Table 1]

As is evident from Table 1, the coatings of the present invention obtained in Examples 1 and 2 are excellent in luminous properties exhibiting high afterglow luminance and have good water resistance. It had good adhesion and excellent durability. The coated product of the present invention obtained in Example 3 was provided with a clear coating film containing the matting agent of the present invention, and thus had a matte property while maintaining the afterglow luminance. Since the coated product of the present invention obtained in Example 4 had a higher content of the luminous pigment than that of Example 1, the afterglow luminance was higher and the luminous property was extremely excellent.

On the other hand, the coated product obtained in Comparative Example 1 was low in water resistance because a phosphorescent pigment not subjected to phosphoric acid treatment was used. Since the coated product obtained in Comparative Example 2 used hydrophobic silica having extremely low transparency as a matting agent contained in the clear coating film, the afterglow luminance was low and the phosphorescent property was poor.

[0043]

According to the present invention, there is provided a durable automotive vehicle which ensures stable visibility in a dark place, has good water resistance, and has excellent adhesion between laminated coating films. A coated resin part can be obtained. Further, it is possible to obtain an automotive resin component coated article suitable for interior use of automobiles, which has a lustrous property while maintaining the luminous property. Further, the base paint for resin parts for automobiles of the present invention exhibits much better luminous performance than conventional luminous paints and luminescent paints, etc.Moreover, since it does not contain radioactive substances, it is economically inexpensive and easy to handle. Easy and secure.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09K 11/08 C09K 11/08 E 11/80 CPM 11/80 CPM (72) Inventor Toshiki Takagi Hirakata, Osaka 2-14-1, Otani City, Japan F-term (reference) in 4c037 CB02 CB08 DB31 DC13 EA41 EA43 EB22 EB38 EC01 EC11 EC24 EC54 4H001 XA08 XA13 XA38 4J038 CC032 CD061 CF041 CG141 CG142 DG162 DG002 DG191 DG261 DJ021 HA246 HA356 KA06 KA08 KA14 KA20 NA19 PA07 PB07 PC02 PC08

Claims (19)

[Claims] An undercoating film is provided on a surface of a resin substrate for an automobile, at least as a base coating film containing a phosphorescent pigment-treated phosphorescent pigment, and a transparent clear coating is applied on the base coating film. Painted automotive resin parts with a membrane. 2. The coated resin article according to claim 1, wherein the luminous pigment mainly comprises strontium aluminate. 3. The content of the luminous pigment in the base coating film is 1
The automotive resin part coated product according to claim 1 or 2, which is 0 to 70% by weight. 4. The coated resin article according to claim 1, wherein the clear coating film contains a transparent matting agent. 5. The coated resin article for automobiles according to claim 4, wherein the transparent matting agent comprises transparent resin beads. 6. The coated resin article for automobiles according to claim 4, wherein the content of the matting agent in the clear coating film is 40% by weight or less. 7. The pre-coating film according to claim 1, further comprising a pre-base coating film containing a coloring pigment as an undercoating film between the surface of the resin substrate for an automobile and the base coating film. Painted resin parts for automobiles. 8. The vehicle according to claim 1, further comprising a primer coating as an undercoat between the surface of the resin substrate for an automobile and a pre-base coating or a base coating. For painted resin parts. 9. The pre-base coating film, the base coating film and the clear coating film, wherein each of the binder resins as main components is an acrylic urethane resin and / or an acrylic melamine resin. From 8
The resin-coated automotive parts according to any one of the above. 10. A base paint for resin parts for automobiles, containing a phosphorescent pigment subjected to a phosphoric acid treatment. 11. The base paint for resin parts for automobiles according to claim 10, wherein the luminous pigment contains strontium aluminate as a main component. 12. The content of the luminous pigment in the solid content is 10 to 7
The base paint for resin parts for automobiles according to claim 10 or 11, which is 0% by weight. 13. A base coating film is formed by applying at least a base coating material according to any one of claims 10 to 12 on a surface of a resin substrate for automobiles as an undercoat coating film. A method for coating resin parts for automobiles, wherein a clear coating film is formed by repeatedly applying a clear coating material on a surface. 14. The coating method for resin parts for automobiles according to claim 13, wherein a paint containing a transparent matting agent is used as the clear paint. 15. The method for coating resin parts for automobiles according to claim 14, wherein transparent resin beads are used as the transparent matting agent. 16. The method for coating resin parts for automobiles according to claim 14, wherein a clear paint having a matting agent content of 40% by weight or less in solid content is used. 17. The method according to claim 13, wherein a pre-base paint containing a coloring pigment is applied to the surface of the resin substrate for automobiles as an undercoat before forming the base coat to form a pre-base paint. 16. The method for coating a resin part for an automobile according to any one of the items up to 16. 18. A primer coating film is formed by applying a primer coating on the surface of a resin substrate for automobiles as an undercoat coating before forming a pre-base coating film or a base coating film. The method for coating an automotive resin part according to any one of the above. 19. An acrylic urethane-based resin and / or an acrylic melamine-based resin as a binder resin which is a main component in each of a pre-base paint, a base paint, and a clear paint. The method for coating a resin part for an automobile according to any one of the above.