KR100710507B1 - Fluorine resin paint composition of high temperature curing type - Google Patents

Abstract

 The present invention relates to a fluorine comprising polyvinylidene fluoride (PVdF) resin, a thermoplastic resin of copolymer type of ethyl acrylate and methacrylate, a thermosetting acrylic resin of copolymer type containing acrylamide, an inorganic pigment and other additives. As a resin coating composition, it is possible to have high gloss by improving gloss workability, and to improve high gloss high temperature type fluorine resin coating composition for high gloss, characterized by increasing physical properties such as hardness, chemical resistance and adhesion.

According to the present invention having the above-described configuration, the conventional fluorine resin paint has been developed in various colors for the coating of building exterior materials, but there is a problem in that development of a wide range of colors cannot be achieved due to the lack of glossiness due to the limited gloss. On the contrary, in the present invention, high melting point and low molecular weight polyvinylidene fluoride, which has excellent durability and weather resistance, and has different polymer properties from conventional polyvinylidene fluoride (PVdF) resins, is solved by the present invention. The use of (PVdF) resins, thermoplastics and thermosetting acrylic resins has made it possible to develop a wide range of gloss paints that were not feasible with conventional polyvinylidene fluoride (PVdF) resin paints. Anti-pollution property is also superior to conventional paints. There is an advantage that can be expected.

High gloss, high temperature small form, fluororesin, paint composition, polyvinyl difluoro fluoride (PVdF) resin, ethyl acrylate, methyl methacrylate, copolymer, thermoplastic resin, thermosetting resin, acrylamide, inorganic pigment

Description

 Fluorine Resin Paint Composition of High temperature curing type

The present invention relates to a high temperature calcined fluororesin coating composition, and more particularly, to a polyvinylidene fluoride (PVdF) resin, a copolymer type of an ethyl acrylate and methyl methacrylate, and an acrylamide. A fluorine resin coating composition composed of a copolymer type thermosetting acrylic resin, an inorganic pigment, and other additives, and has a high gloss by improving gloss workability, and has high gloss, which is characterized by increased physical properties such as hardness, chemical resistance, and adhesion. It relates to a high temperature calcined fluororesin coating composition for use.

In recent years, due to the development of building technology, the construction of high-rise / high-grade buildings is actively being actively conducted in the construction of urban buildings, and these buildings are mainly used for low gloss and high weather resistance fluorine resin paint because they require aesthetic appearance as well as durability. To paint. The low gloss and high weatherability fluororesin paint has a high electronegativity and bonding energy, so that the life of the coating film can be guaranteed for about 20 years, and also increases the aesthetic value of the building. As the value of the building is beautiful and beautiful, the applied paints and functional paints with various functions are urgently required.

And research and development of non-polluting fluorine resin coating composition is active in order to meet the requirements as described above, looking at the contents of the patent application technology developed as part of this, Korean Patent Publication No. 2000-0042780 (2000. 7. Non-polluting high-temperature fluorine-type fluorine coating composition has been proposed in the publication. However, the conventional fluorine resin paints have been developed in various colors for the coating of architectural exterior materials, but due to the inherent characteristics of the resin, the gloss of the surface of the coating film is limited. There was a limitation in use because of anger.

On the other hand, conventional high gloss and high weather resistance fluorine resin paints based on fluoroolefin fluorine resins (LUMIFLON) are more expensive than polyvinylidene fluoride (PVdF) resins and are relatively inferior in weather resistance, and have a separate theme and curing agent. The remaining amount of paint after actual use as a two-component type has a problem in work, such as gelation cannot be used over time, and only part of it is used in Korea, and some of the necessary customers are made of high gloss fluoride resin (LUMIFLON) paint imported from Japan. The situation is using painted panels. In addition, fluoroolefin fluorine resin (LUMIFLON) has a disadvantage in that its mechanical properties (processability) are somewhat lower than that of polyvinylidene fluoride (PVdF) resin due to its molecular structure.

In addition, since the conventional high weatherability fluorocarbon resin paints have a low gloss, the surface of the coating film becomes contaminated by airborne contaminants over time, and thus has not had a problem of satisfying various demands of consumers.

In order to solve the above problems, the present invention is a weight average molecular weight (MW) of the polyvinylidene fluoride (PVdF) resin used in conventional fluorine resin paint is about 450,000 ~ 480,000 and has a melting point of 155 ~ 160 ℃ In contrast, the polyvinylidene fluoride (PVdF) resin used in the present invention has a low molecular weight of about 230,000 to 250,000, and a polyvinylidene fluoride (PVdF) having a high melting point of 165 to 170 ° C. ) To provide a high temperature small-type fluorine resin coating composition, which can obtain a high gloss appearance by reducing the crystallinity of the coating film by using a homo polymer resin, and also improve the pollution resistance. There is this.

The thermoplastic acrylic resin used in the present invention has a weight average molecular weight (MW) of about 80,000 to 100,000, and the thermosetting acrylic resin used together is a self-crosslinking type having a low molecular weight of about 40,000 to 70,000 (Self cross linking type). It is another object of the present invention to provide a high temperature small-type hydrophobic coating composition, characterized in that the lightness and smoothness of the surface of the coating film is better than that of the conventional thermoplastic acrylic resin and the coating film hardness is high, thereby improving gloss workability.

The present invention for solving the above problems relates to a high gloss high temperature calcined fluororesin coating composition, the configuration is as follows.

The present invention relates to a fluorine coating composition comprising a polyvinylidene fluoride (PVdF) resin, a mixed resin of thermoplastic and thermosetting acrylic resin, an inorganic pigment, a mixed solvent, and other additives.

I) 53.5 to 65.5% by weight of the mixed resin as a mixed resin obtained by mixing a polyvinylidene fluoride (PVdF) resin, a thermoplastic acrylic resin and a thermosetting acrylic resin;

Ii) the pigment comprises 11.0 to 17.5 wt% of an inorganic pigment;

Iii) 23.0 to 27.0 wt% of the mixed solvent;

Iii) the antifoaming agent 0.5-2.0 wt% of non-silicon type polyacrylate;

It relates to a high gloss high-temperature baking type fluororesin coating composition for containing.

The mixed resin is a mixed resin of a polyvinylidene fluoride (PVdF) resin, a thermoplastic acrylic resin and a thermosetting acrylic resin, to improve the gloss workability of the coating film to have a high gloss, hardness, chemical resistance and When the amount of the mixed resin is less than 53.5% by weight, the physical properties of the mixed resin may be lowered due to the insufficient amount of the mixed resin compared to the amount of the pigment and the solvent. When the amount exceeds 65.5% by weight, the amount of the mixed resin is excessive compared to the amount of the solvent, resulting in a high viscosity of the composition and a deterioration of workability.

And the mixed resin according to Table 1 of the embodiment, a mixture of 25.0 to 32.0% by weight of the thermoplastic acrylic resin, 23.5 to 26.5% by weight of the polyvinylidene fluoride (PVdF) resin and 5.0 to 7.0% by weight of the thermosetting acrylic resin When the polyvinylidene fluoride (PVdF) resin is 23.5% by weight or less, the acrylic content in the paint is relatively high, resulting in deterioration of the value of the fluorine resin due to deterioration of weather resistance and chemical resistance of the fluorine resin. If the thickness is more than 26.5% by weight, the surface of the coating film may not be smooth and the bonding strength with the subject may be reduced, resulting in deterioration of adhesion.

The polyvinylidene fluoride (PVdF) resin has a low molecular weight (MW) of 230,000 to 250,000 with a weight average molecular weight (MW) having a structural formula of (1) below, and a homopolymer having a high melting point of 165 ° C to 170 ° C. As a fluorine resin of (), it has a low crystallinity when mixed within the above range can solve the disadvantage of low gloss.

Commercially available resins of the polyvinylidene fluoride (PVdF) resin used in the present invention include HYLAR 5000HG (SOLVAY SOLEXIS), KYNAR 500 PLUS (ARKEMA), and the like.

As the fluorine resin used for the fluorine resin paint having a high gloss, the fluoroolefin (Lumiflon) fluorine resin paint having the structural formula (2) is a polyvinylidene fluoride (PVdF) resin having the structural formula (1) It is more expensive than paint and has a relatively poor weather resistance, so it is not only competitive in Korea, but also a two-component type with a main agent and a hardener.The remaining amount of paint left behind after the actual use cannot be used due to gelation over time. Due to the problem, only a portion is imported and used in Korea, and some required customers use color panels coated with high-gloss fluorine resin paint imported from Japan. On the other hand, the polyvinylidene fluoride (PVdF) resin paint used in the present invention has the advantage that the remaining paint after use as a one-component type can be used again later.

(1)

(One)

(2)

(2)

The thermoplastic resin has a weight average molecular weight (MW) of about 80,000 to 100,000 and is used within the range of the molecular weight, and when it is less than the range of the molecular weight, there is a fear that the effect of viscosity reduction of the coating composition does not appear. When using beyond the range of molecular weight, the viscosity of a coating composition may fall too much and may adversely affect other physical properties. Examples of the thermoplastic resin used in the present invention include Code: AP5530 (our company), AP2164, AP8844 and commercially available PARALOID B-44 (ROHM & HAAS).

In addition, the thermosetting resin has a weight average molecular weight (MW) of about 40,000 to 70,000 and uses acrylamide of acrylic base, and self-crosslinking occurs at a temperature of 150 ° C. or higher. Such crosslinking density Increasing) increases the hardness and chemical resistance, enables the thickening (High solid), and serves to increase adhesion and improve the gloss workability by applying to the fluorine paint within the range of the amount used. When the amount of the thermosetting resin is less than the range of the amount of use, there is a concern that the physical properties may not appear properly, and when the amount of the thermosetting resin exceeds the range of the amount of use of the other resins There is a risk that other physical properties will fall due to insufficient usage. Examples of this type of resin include a self-crosslinking type Duracron (duracron, PPG or Mitsubishi Rayon), AC7658 (our), FV658 (PPG) and the like.

In addition, the inorganic pigment is preferably selected from one or more selected from calcined ceramic colored pigments, metallic pigments, or pearl pigments according to the needs or demands of consumers, and 11.0 to 17.5 wt% is used. And in the case of a transparent paint, a pigment is not used. In particular, calcined ceramic pigments are inorganic pigments calcined with metal oxides at high temperatures. They are colored in paints and have excellent chemical and weather resistance. For example, titanium dioxide, cobalt, chromium, aluminate, iron, titanium, manganese, nickel , Complex type consisting of 2 to 5 kinds of antimony, zinc, copper, magnesium, etc. are used. Metallic pigments are used in paste form as aluminum pigments, and Mica pigments coated with metal oxides are used for pearl pigments. When the amount of the inorganic pigment used is less than the range of the amount of use, there is a concern that the physical properties such as vivid color, chemical resistance and weather resistance, etc. may be lowered. The above properties are not raised, and other properties may be lowered due to insufficient amount of other components.

As the mixed solvent, one or more selected from a hydrocarbon solvent, an ester solvent, an ether solvent, a ketone solvent, an alcohol solvent, or a glycol solvent is preferably used within the range of 23.0 to 27.0 wt%. . The composition ratio of a solvent should be used in combination suitably according to painting workability in the range which the physical property of resin or a pigment does not fall by appropriate mixing with resin or a pigment. Hydrocarbon solvents include xylene, toluene, cocosol # 100, cocosol # 150, cocosol # 200, and ester solvents such as ethylene glycol diacetate, propylene glycol diacetate, and ethylene glycol ether. Acetate, ethylene glycol monoethyl ether acetate (cellosolve acetate), estazole, ethylene glycol diacetate, butyl cellosolve acetate, glycol ether solvents, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl Ether (butyl cellosolve), dipropylene glycol methyl ether, tripropylene glycol methyl ether, propylene glycol methyl ether, propylene glycol methyl ether, propyl glycol ether, hexyl glycol ether,, ketone solvents, methyl ethyl ketone, methyl iso Butyl ketone, methyl isoamyl ketone, diisobutyl ketone cyclohexanone, diacetone al Coal, isophorone, C-11 ketone, isopropyl alcohol, butyl alcohol, benzyl alcohol, other solvents, dimethyl phthalate, aliphatic dibasic ester (DBE), DME-1, propylene carbonate, dimethyl carbonate , Dimethylformamide, dimethylacetamide, propyl propionate, butyl propionate, pentyl propionate and the like.

In addition, the antifoaming agent is preferably used in the range of 0.5 to 2.0% by weight of a non-silicon type polyacrylate. When the amount of the antifoaming agent is less than the above usage range, when the road is manufactured or painted, the work efficiency may decrease due to the generation of air bubbles, or air bubbles may be generated on the surface of the coating film, resulting in scratches on the appearance of the coating film. When used over the range of the amount of use, the antifoaming effect does not increase in proportion to the increase of the amount of use, but there is a possibility that other physical properties are lowered.

As described above, the high gloss high-temperature calcined fluorine resin coating composition prepared and manufactured according to the present invention can be applied to a building exterior material to obtain a high gloss coating film having the same physical properties as those of conventional fluorine resin paints and having a beautiful appearance. .

In the present invention, the material used for painting is cold rolled steel (CR), hot-dip galvanized steel sheet (GI), galvanized steel sheet (EGI), alloy plate steel sheet (GA), aluminum plated (Aluminized) steel sheet (galvalume, GL) and other aluminum alloy materials, and the pretreatment of the materials used may be chromate based, non chromate based or similar materials. The polyester type, the polyurethane type, the epoxy type and the modified fluorine type can be used.

And the coating method of the paint in the present invention is a roll coating method, spray coating method, flow coat method (Flow coat) method is used, the coating film thickness is 5 ~ 30u is suitable. The baking time and temperature may vary depending on the conditions. In the case of the roll coating method, it is preferable to work in the conditions of 45 to 55 seconds and 232 to 249 ° C (PMT standard), and the degree of crystallization of the coating film after baking is determined. Water quenching should be performed immediately to lower the temperature. The higher the cooling water temperature, the higher the crystallinity, the greater the hardness of the coating film, but the lower the processability. Therefore, the cooling water temperature is preferably controlled below 40 ° C.

Hereinafter, the present invention will be described in detail with reference to the following Examples, which are not intended to limit the scope of the present invention.

1. Preparation of fluorine resin

(Example 1 and Comparative Example 1)

The coating materials of Example 1 and Comparative Example 1 were prepared using the same ingredients and blending ratios as those shown in Table 1 below.

In Example 1, the acrylic resin of (9) was added to the mixed solvent of (12) to (15), stirred and dissolved, and the PVdF resin of (7) was added, and then dispersed to a particle size of 30 u or less using a disperser. Dispersion 1 was prepared.

Separately, the acrylic resin of (1) was added to the solvent of (2) and stirred well, and then the pigment of (4) was added thereto, followed by medium speed stirring for 20 minutes, and then dispersed to a particle size of 10 u using a disperser to prepare dispersion 2.

Then, after mixing the dispersion 1 and the dispersion 2 prepared in each of the above well, (3), (10), (11) is added in order and stirred well to form a uniform mixture to complete the production of the paint.

And Comparative Example 1 was prepared by the same method as in Example 1, except that instead of the PVdF resin of (7) used in Example 1 using a polyvinyl difluoro fluoride (PVdF) resin of (8) .

 (Example 2 and Comparative Example 2)

The coating materials of Example 2 and Comparative Example 2 were prepared using the same ingredients and blending ratios as those shown in Table 1 below.

In Example 2, the acrylic resin of (9) was added to the mixed solvent of (12) to (15), stirred and dissolved, and the PVdF resin of (7) was added, and then dispersed to a particle size of 30 u or less using a disperser. Dispersion 1 was prepared.

Separately, the acrylic resin of (1) was added to the solvent of (2) and stirred well.Then, the pigments of (4) and (5) were added thereto, followed by medium-speed stirring for 20 minutes. Manufactured.

Then, the dispersion 1 prepared above and the dispersion 2 are well mixed, and then (3), (10) and (11) are sequentially added and stirred well to form a uniform mixture to complete the production of the paint.

And Comparative Example 2 was prepared by the same method as in Example 2, except that instead of the PVdF resin of (7) used in Example 1 using a polyvinyl difluoro fluoride (PVdF) resin of (8) .

(Example 3 and Comparative Example 3)

The coating materials of Example 3 and Comparative Example 3 were prepared using the same ingredients and blending ratios as those shown in Table 1 below.

In Example 3, the acrylic resin of (9) was added to the mixed solvent of (12) to (15), stirred and dissolved, and the PVdF resin of (7) was added, and then dispersed to a particle size of 30 u or less using a disperser. Dispersion 1 was prepared.

Separately, the acrylic resin of (1) was added to the solvent of (2) and stirred well, and then, the pigment of (6) was added thereto, followed by medium speed stirring for 30 minutes to prepare a dispersion 2.

Then, the dispersion 1 prepared above and the dispersion 2 are mixed well, and then (3), (10), and (11) are sequentially added and stirred well to form a homogeneous mixture to complete the preparation of the paint.

And Comparative Example 3 was prepared by the same method as in Example 3, except that instead of the PVdF resin of (7) used in Example 1 using a polyvinyl difluoro fluoride (PVdF) resin of (8) .

                                                      (Unit: weight%) number Name Example Comparative example One 2 3 One 2 3 One Thermoplastic Acrylic Resin ¹⁾ 10.0 10.0 15.0 11.0 11.0 15.0 2 Solvent A (isophorone) 3.0 3.0 3.0 3.0 3.0 3.0 3 Antifoam ²⁾ 2.0 0.5 0.5 0.5 0.5 0.5 4 Coloring Pigment (Titanium Dioxide) 17.5 0.3 - 17.6 0.3 - 5 Color Pigment (BLUE COLOR) - 17.2 - - 17.3 - 6 MICA PEARL Pigment - - 11.0 - - 11.0 7 PVdF resin ^{3 )} 23.5 25.0 26.5 - - - 8 PVdF resin ^{4 )} - - - 25 25 27 9 Thermoplastic acrylic resins ^{5 )} 15.0 15.0 17.0 15.0 15.0 17.0 10 Thermosetting Acrylic Resin ^{6 )}  5.0 5.0 7.0 6.0 6.0 6.0 11 Solvent A (isophorone) 3.0 3.0 3.0 3.0 3.0 3.0 12 Solvent C (Butyl Cellosolve Acetate) 2.0 2.0 0.5 1.9 1.9 0.5 13 Solvent B (xylene) 8.0 8.0 5.0 7.0 7.0 7.0 14 Solvent A (isophorone) 6.0 6.0 6.0 6.0 6.0 6.0 15 Solvent D ^{7 )} 5.0 5.0 5.5 4.0 4.0 4.0 system 100 100 100 100 100 100

Note 1) AP5530 (Dongju Industry)

   2) AP4615 (Dongju Industry)

   3) Hylar 5000HG (SOLVAY SOLEXIS Co., Ltd.), the product has a melting point of 165 ~ 170 ℃, the weight average molecular weight (MW) of low molecular weight of 230,000 to 250,000.

   4) Kynar 500 (ARKEMA), the product has a melting point of 155 ~ 160 ℃, the weight average molecular weight (MW) of high molecular weight of 450,000 to 480,000

   5) AP5530 (Dongju Industry)

   6) AC7658 (Dongju Industry)

   7) Kocosol # 150 (Hong Kong)

2. Physical property test

The paints prepared according to the Examples and Comparative Examples were prepared, and the physical properties were evaluated according to the contents of Table 2 below. The results are shown in Table 3 below.

end. Psalm Writing

Chromate-treated aluminum specimens were coated with a fluorocarbon paint undercoat (DJP-5228 HS primer) under a dry film thickness of 5-7u, material surface temperature of 204 ℃ and baking time of 28 seconds. 1, Example 2, Example 3 The paints prepared according to Comparative Examples 1, 2, and 3 were each prepared under the conditions of a dry coating thickness of about 20 u, a material surface temperature of 241 ° C., and a baking time of 45 seconds.

I. Test Methods

number Test Items Assessment Methods One Gloss (Gloss 60˚) Initial coating gloss measurement using a 60˚ gloss meter 2 Coating Hardness (MEK Rubs) Measure the number of times the coating film is peeled off by rubbing the surface 3 Pencil hardness Coating hardness is measured using UNI-Pencil (Mitsubishi) 4 Machinability (T-Bend) Fold the specimen 180˚ to measure the degree of peeling of the coating 5 Adhesiveness (C.E.T) 5 mm measurement with Erichsen tester 6 Impact Resistance Measured with Dupont tester under 1/2 ″ ㅧ 50cm ㅧ 500g 7 Acid resistance 96 hours spot test with 5% hydrochloric acid solution at room temperature 8 Alkali resistance 96 hours spot test with 5% sodium hydroxide solution at room temperature 9 Boiling water & adhesion Adhesion (C.E.T) test after 2 hours immersion in boiling water (98 ㅁ 2 ℃) 10 Navigator Appearance of coating after immersion in boiling water (98 ㅁ 2 ℃) for 2 hours 11 Promoted Weather Resistance (W-O-M) W-O-M tester measures color difference and gloss retention after 4000 hours 12 Carbon contamination (ΔE) After dropping 10 drops of carbon 0.5% aqueous solution and leaving it at 80 ℃ for 1hr, wash it with soapy water and compare the color difference

number Test Items Example Comparative example One 2 3 One 2 3 (One) Gloss (Gloss 60˚) 73% 65% 71% 38% 25% 35% (2) Coating Hardness 100 times or more 100 times or more 100 times or more 100 times or more 100 times or more 100 times or more (3) Pencil hardness F or more F or more F or more F or more F or more F or more (4) Machinability 5 points 5 points 5 points 5 points 5 points 5 points (5) Adhesiveness (C.E.T) 5mm or more 5mm or more 5mm or more 5mm or more 5mm or more 5mm or more (6) Impact resistance Good Good Good Good Good Good (7) Acid resistance Same as initial Same as initial Same as initial Same as initial Same as initial Same as initial (8) Alkali resistance Same as initial Same as initial Same as initial Same as initial Same as initial Same as initial (9) Adhesion after boiling 100/100 100/100 100/100 100/100 100/100 100/100 10 Navigator Same as initial Same as initial Same as initial Same as initial Same as initial Same as initial (11) Promote weather resistance color △ E Max 5 Max 5 Max 5 Max 5 Max 5 Max 5 Gloss retention Good Good Good Good Good Good (12) Carbon contamination Visually Good Good Good trace trace trace

As shown in the physical properties of [Table 3], Examples 1 to 3 and Comparative Examples 1 to 3 were each polyvinylidene fluoride (PVdF) resin, and the coating film hardness of (2) to (11) in the physical properties. ), But the Examples and Comparative Examples use a polyvinyl difluoro fluoride (PVdF) resin having different physical properties of the polymer, that is, the melting point is 165 ~ 170 ℃, weight average molecular weight (MW) Examples 1 to 3 using a polyvinylidene fluoride (PVdF) resin having a low molecular weight of 230,000 to 250,000 have a melting point of 155 to 160 ° C and a weight average molecular weight (MW) of 450,000 to 480,000 Compared with Comparative Examples 1 to 3 using polyvinylidene fluoride (PVdF) resin, it can be seen that the gloss (Gloss 60 °) performance is much better.

That is, the present invention uses a fluororesin having a melting point and molecular weight different from that of a conventional fluororesin, and effectively improves the crosslinking density. In addition, the conventional problems can be solved by developing a high gloss fluorine resin coating using a thermosetting acrylic resin having a low molecular weight of about 40,000 to 70,000, which is advantageous for a high gloss coating, which is a self cross linking type. Could.

According to the present invention having the above-described configuration, the conventional fluorine resin paint has been developed in various colors for the coating of building exterior materials, but there is a problem in that development of a wide range of colors cannot be achieved due to the lack of glossiness due to the limited gloss. On the contrary, in the present invention, high melting point and low molecular weight polyvinylidene fluoride, which has excellent durability and weather resistance, and has different polymer physical properties from conventional polyvinylidene fluoride (PVdF) resins, is solved. The use of (PVdF) resins, thermoplastics and low molecular weight thermosetting acrylic resins has made it possible to develop a wide range of gloss paints that could not be realized in paints, and also prevents contamination due to environmental pollution that can be expected from glossy paints. There is an advantage that can be expected to improve the quality better.

Claims (6)

In a fluorine coating composition comprising a polyvinylidene fluoride (PVdF) resin, a mixed resin of thermoplastic and thermosetting acrylic resin, an inorganic pigment, a mixed solvent and other additives I) 53.5 to 65.5% by weight of the mixed resin as a mixed resin obtained by mixing a polyvinylidene fluoride (PVdF) resin, a thermoplastic acrylic resin and a thermosetting acrylic resin; Ii) the pigment comprises 11.0 to 17.5 wt% of an inorganic pigment; Iii) 23.0 to 27.0 wt% of the mixed solvent; Iii) the antifoaming agent 0.5-2.0 wt% of non-silicon type polyacrylate; A high gloss calcined fluororesin coating composition for high gloss comprising a. The method of claim 1, The mixed resin is a high-gloss resin, characterized in that a mixture of 25.0 to 32.0% by weight of thermoplastic acrylic resin, 23.5 to 26.5% by weight of polyvinylidene fluoride (PVdF) resin and 5.0 to 7.0% by weight of thermosetting acrylic resin High temperature baking type fluoroplastic coating composition The method according to claim 1 or 2, The polyvinylidene fluoride (PVdF) resin has a low molecular weight (MW) of 230,000 to 250,000, and has a high melting point of 165 to 170 ° C. The method according to claim 1 or 2, The thermosetting acrylic resin has a high molecular weight, high molecular weight, fluorine resin coating composition, characterized in that the weight average molecular weight (MW) of 40,000 to 70,000 low molecular weight. The method of claim 1,  The inorganic pigment is a high gloss high-temperature calcined fluororesin coating composition for use by selecting one or more selected from calcined ceramic color pigments, metallic pigments, or pearl pigments. The method of claim 1, The mixed solvent may be used by selecting one or more selected from hydrocarbon solvents, ester solvents, ether solvents, ketone solvents, alcohol solvents or glycol solvents. Composition.