JPH0543754B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a coating composition for land structures. More specifically, the present invention relates to a coating composition containing copper alloy powder that can be applied to the roofs, wall materials, floors, etc. of general buildings, and the interior and exterior surfaces of livestock breeding facilities such as pig farms and poultry farms. (Prior Art) Copper plates have heretofore been used as roofing or wall materials for general buildings. Such copper plates are very expensive, and require skill to perform construction work as they must be cut or bent along the base. There was also an aesthetic problem in that the colors were generally constant and it was therefore impossible to change the colors. In addition, problems such as patina and discoloration and discoloration due to atmospheric pollution impair the aesthetic appearance have become a problem. Further, it appears that copper plates are being used in livestock breeding facilities (for example, pig farming, poultry farming facilities, etc.) by utilizing the bactericidal properties of copper. However, there were problems with the strength of the copper plate itself, corrosion and damage in harsh working environments, and simply put, problems with deterioration and damage caused by the excrement of domestic animals. Furthermore, copper itself is not necessarily cheap, and therefore problems such as economical efficiency have been pointed out. (Means for Solving the Problems) In view of the above-mentioned actual circumstances, the present invention has been achieved as a result of intensive studies to solve the various problems mentioned above. The present inventors have previously filed an application for an "underwater" antifouling paint composition that utilizes the antifouling properties of a specific copper alloy powder. Therefore, the inventors discovered that even when the coating composition was applied to land structures, superior results could be obtained compared to the conventional techniques, and the present invention was completed. Therefore, the present invention (i) is significantly superior in construction workability and decorativeness (large degree of freedom in coloring) compared to methods such as pasting copper plates, (ii) is inexpensive, and ( The purpose is to provide a paint composition that forms a paint that iii) has excellent long-term corrosion resistance and durability, and (iv) can prevent the growth of moss and mold in shady and humid areas. That is. That is, the present invention includes: (a) 100 parts by weight of a color vehicle (solid content); (b) 3 to 25% by weight of at least one metal selected from nickel and manganese; and at least 25% by weight of at least one metal selected from zinc and tin. 100 to 750 parts by weight of a copper alloy powder containing 0.1 to 5% by weight of one metal and 0.1 to 1% by weight of at least one selected from aluminum and silicon; It pertains to a coating composition for land structures consisting of the following proportions. The present invention will be explained in detail below. The color vehicle used in the coating composition of the present invention is:
All the color vehicles for paint compositions that are normally used for the interior and exterior surfaces, floors, etc. of land structures (buildings) can be used without any problems. Examples include thermoplastic or thermosetting resins such as acrylic resin, urethane resin, fluororesin, epoxy resin, chlorinated rubber resin, polyester resin, silicone resin, alkyd resin, vinyl resin, melamine resin, and oil-based varnish.
These may be used singly or as a mixture of two or more, if necessary. Further, these can be used after being dissolved or decomposed in water or an organic solvent. In addition, especially when outdoor weather resistance is required, acrylic resin, fluororesin, urethane resin,
Silicone resins and the like are preferably used, and when corrosion resistance is particularly required, epoxy resins, urethane resins, etc. are preferably used. Next, the copper alloy powder used in the coating composition of the present invention contains 3 to 25% by weight of at least one metal selected from nickel and manganese, and 0.1 to 25% by weight of at least one metal selected from zinc and tin. 5% by weight, and 0.1 to 1% by weight of at least one metal selected from aluminum and silicon,
The remaining composition is copper-based. Naturally, compositions containing unavoidable metal impurities derived from the raw materials used in the production of copper alloy powder are naturally included in the technical scope of the present invention. The shape of the copper alloy powder referred to in the present invention may be various shapes such as granular, fibrous, or flat. If the content of at least one metal selected from nickel and manganese in the copper alloy powder is less than 3% by weight, the copper alloy powder has a greater tendency to oxidize, and therefore long-term corrosion resistance cannot be expected. It disappears. Moreover, when exposed to the atmosphere, the amount of copper ions eluted becomes excessive, leading to wastage of copper alloy, and as a result, the aesthetic appearance and durability of the coating film deteriorate. On the other hand, in the copper alloy powder, the content of at least one metal selected from zinc and tin is 0.1
If it is less than % by weight, the structure of the copper alloy will not be made uniform, the uniform dissolution of copper ions will be impaired, and the copper alloy will be wasted. Furthermore, if the content of at least one metal selected from aluminum and silicon in the copper alloy powder is less than 0.1% by weight, it will be difficult to uniformly elute copper ions, and the deoxidizing effect will not be expected. As a result, the durability and bactericidal effect of the coating film will be impaired. Conversely, the content of at least one metal selected from nickel and manganese exceeds 25% by weight,
Furthermore, if the content of at least one metal selected from zinc and tin exceeds 5% by weight, or if the content of at least one metal selected from aluminum and silicon exceeds 1% by weight, copper Either case is unfavorable because the copper content in the alloy powder decreases and the bactericidal effect due to copper elution is suppressed. As mentioned above, the copper alloy powder used in the present invention can take various forms, but taking into consideration the surface condition of the coating film, it may be in the form of granules with an average particle size of 10μ or less, or with an average length of 10μ.
It is preferable to use flat particles with an average thickness of about 2 to 10 microns, or fibrous particles with an average diameter of about 2 to 15 microns and an average length of about 10 to 200 microns. In any case, by making the copper alloy powder in the present invention have a specific composition as described above, the elution of copper ions can be appropriately controlled and effects such as durability and corrosion resistance can be provided. In the coating composition of the present invention, the copper alloy powder is used in an amount of 100 to 750 parts by weight, preferably 200 to 700 parts by weight, based on 100 parts by weight of the solid content of the vehicle. In the above range, the amount of copper alloy powder used is 100
If the parts by weight are not calculated, it will be difficult to obtain the desired durability, corrosion resistance, or bactericidal (antifungal) effect. On the other hand, if more than 750 parts by weight is used, the strength of the coating film tends to decrease and defects such as peeling tend to occur, which is not so preferable. Next, the coating composition of the present invention has the feature that it can be colored relatively freely. That is, usually
A coating composition with excellent decorative properties can be obtained by adding and mixing various coloring pigments used for coatings. Therefore, the coating composition according to the second aspect of the present invention has the following formulation. (a) Color vehicle (solid content) 100 parts by weight (b) 3-25% by weight of at least one metal selected from nickel and manganese, and 0.1-5% by weight of at least one metal selected from zinc and tin. %, and 100 to 750 parts by weight of a copper alloy powder containing 0.1 to 1% by weight of at least one metal selected from aluminum and silicon, and (c) 150 parts by weight or less of a colored pigment The above component (c), that is, a colored pigment As the pigment, one or a mixture of two or more organic or inorganic pigments commonly used for paints, such as titanium oxide, carbon black, iron oxide, and phthalocyanine pigments, can be used. In the above range, if the amount of the colored pigment exceeds 150 weight, it is not preferable because the strength of the coating film decreases. In addition, in the coating composition of the present invention, as components other than the above, extender pigments, dyes, curing agents, curing accelerators, solvents, and various other additives (antifoaming agents, antisettling agents, leveling agents), etc. Various components normally used in this type of paint can be added and mixed. The coating composition of the present invention is prepared as a one-component coating by mixing and dispersing the color vehicle, copper alloy powder, and other components in a common coating manufacturing device (ball mill, disper, etc.) all at once or in parts. be able to. Alternatively, the paint components may be divided into two-component types and mixed and dispersed immediately before use. The coating composition of the present invention thus prepared can be coated as it is or after adjusting the viscosity with a solvent by ordinary air spray coating, airless spray coating, electrostatic coating, roller coating, brush coating, double gun coating, etc. Apply to the coating at a dry film thickness of approximately 30 to 300 microns. The objects to be coated include various materials such as metals such as iron and aluminum; concrete; plywood; wood; inorganic building materials such as straight boards, asbestos boards, and calcium silicate boards; plastics; and glass. Moreover, these objects to be coated can be coated with a rust-preventing primer for the purpose of rust prevention, or can be subjected to a suitable surface treatment to prevent suction. This type of modification is naturally included in the present invention. After the coating composition of the present invention is applied onto an object to be coated, it is dried at room temperature or heated at 80 to 200°C for about 5 to 30 minutes, and then used for its intended purpose. Thus, the coating film obtained from the coating composition of the present invention is not only decorative, but also has excellent durability and corrosion resistance, and also exhibits excellent effects such as being able to prevent the growth of moss and mold. do. The details of the present invention will be explained below using Examples and Comparative Examples. "Parts" or "%" or "%" are "parts by weight" or "% by weight." Example 1 A coating composition of the present invention was prepared using the following formulation. Blend (1) (Main ingredient) Epoxy resin 6 parts xylol 10 Methyl isobutyl ketone 9 Copper alloy powder 65 (Curing agent) Polyamide resin 4 parts xylol 4 Isobutanol 2 The epoxy resin is Epicoat # manufactured by Ciel Chemical Co., Ltd. 1001 [Epoxy equivalent 450-520]
The polyamide resin was Fuji Kasei Co., Ltd.'s product name Tomide #210 [amine value 95±5], and the copper alloy powder was 83.5% copper, 15% nickel, 0% manganese, 1% zinc, and tin. 0%, aluminum 0.5
%, silicon 0% was used. In the production of the main ingredient, all components were mixed and mixed with disper stirring. Upon use, the base agent and curing agent were mixed. The steel parts to be coated, such as the pillars and fences of a pig farming facility, were first sandblasted, then air sprayed twice with a standard epoxy primer at 50μ, and then allowed to dry at room temperature for one day. Next, the coating composition of the present invention having the formulation (1) was air-sprayed twice (dry film thickness: 100 μm), and after drying at room temperature for one week, it was used. As a result of observing the usage conditions for more than two years, no damage of any kind was observed, including deterioration due to excrement, growth of moss, and mold. Example 2 A coating composition of the present invention was prepared using the following formulation. Blend (2) (Main ingredient) Epoxy resin 6 parts titanium oxide 5 Iron oxide 2 Xylol 10 Methyl isobutyl ketone 10 Copper alloy powder 60 (Curing agent) Polyamide resin 4 parts Xylol 4 Isobutanol 2 The epoxy resin is manufactured by Ciel Chemical Co., Ltd. )Product name Epicote #1001 [epoxy equivalent 450-520],
As the polyamide resin, Fuji Kasei Co., Ltd. trade name Tomide #210 [amine value 95 ± 5] was used, and as the copper alloy powder, 83.5% copper, 15% nickel, 0% manganese, 1% zinc, 0% tin. , 0% aluminum and 0.5% silicon were used. In producing the main ingredient, the ingredients except the copper alloy powder were first mixed, kneaded in a pot mill for a day and night, and then a predetermined amount of the copper alloy was added thereto and stirred with a disper to obtain a main ingredient composition. The base resin and curing agent were mixed at the time of use. Steel parts such as the pillars and fences of a pig farming facility were selected as the objects to be coated.The parts were first sandblasted, then air-sprayed twice with a 50μ ordinary epoxy primer, and then dried at room temperature for one day. Then, the coating composition of the present invention having the above formulation (2) was added to 2
It was air spray coated twice (dry film thickness 100 μm) and dried at room temperature for one week before use. As a result of observing the usage conditions for more than two years, no damage of any kind was observed, including deterioration due to excrement, growth of moss, and mold. Example 3 A coating composition of the present invention was prepared using the following formulation. Blend (3) (Main ingredient) Polyester resin (trade name Desmofene 1100 manufactured by Bayer AG) 14.1 parts Polyester resin (trade name Desmofene 800 manufactured by Bayer AG) 14.1 Xylol 6 Ethyl acetate 6 Butyl acetate 6 Cellosolve acetate 4.8 Copper alloy powder 65 (Curing agent) ) Isocyanate resin 39 As the isocyanate resin, polyvalent isocyanate manufactured by Mitsubishi Chemical Corporation (trade name: Mitek) is used.
GP101A [non-volatile content 75%], and copper alloy powder is 83% copper, 15% nickel, 0% manganese, 1% zinc, 0% tin, 0.5% aluminum, silicon.
0.5% was used. In producing the main ingredient, the ingredients except the copper alloy powder were mixed, kneaded in a pot mill for a day and night, and then a predetermined amount of the copper alloy powder was added thereto and stirred with a disper to obtain a main ingredient composition. The base resin and curing agent were mixed at the time of use. The object to be coated is the concrete floor of a pig farming facility.
A regular epoxy primer was diluted to 50% with xylene, and sealed with air spray. After drying at room temperature for one day, the same epoxy primer was air sprayed twice at 50μ and dried for one day at room temperature. Then, the coating composition of the present invention having the above formulation (3) was air-sprayed twice (dry film thickness: 100 μm) and allowed to dry at room temperature for one week. As a result of observing usage conditions for more than 2 years, we found that there was no damage,
No deterioration damage caused by excrement, moss, or mold growth was observed at all. Example 4 A coating composition of the present invention was prepared using the following formulation. Blend (4) Chlorinated rubber 25 parts Chlorinated paraffin 40% 10 Anti-settling agent 1 Xylol 64 Copper alloy powder 60 The copper alloy powder is 77% copper, 20% copper
%, manganese 0%, zinc 0%, tin 2%, aluminum 1%, and silicon 0%. All the components of the above formulation were mixed and kneaded with disper stirring.
Apply regular chlorinated rubber primer to slate exterior walls.
Air spray coated 2 times at 30μ and allowed to dry at room temperature for 1 day. Then, the coating composition of the present invention having the above formulation was air-sprayed twice (dry film thickness 70μ),
It was used for drying for 3 days. As a result of observing the usage conditions for more than two years, no deterioration or damage to the paint film, or the growth of moss or mold in shady and humid areas was observed. Example 5 A coating composition of the present invention was prepared using the following formulation. Compound (5) Chlorinated rubber 25 parts Chlorinated paraffin 40% 10 Titanium oxide 8 Anti-settling agent 1 Xylol 64 Copper alloy powder 100 Copper alloy powder is 77% copper, 20% nickel, 0% manganese, 0% zinc, 2% tin , 0% aluminum and 1% silicon were used. Its preparation is
First, the components except for the copper alloy powder were mixed and kneaded in a pot mill for a day and night. Next, a predetermined amount of the copper alloy powder was added thereto, and the above composition was obtained by disper stirring. Apply regular chlorinated rubber primer to slate exterior walls.
Two coats of air spray were applied at 30μ and allowed to dry for one day at room temperature. Then, the coating composition of the present invention having the above formulation was air-sprayed twice (dry film thickness 60 μm).
After drying for several days, it was ready for use. As a result of observing the usage conditions for more than two years, no deterioration or damage to the paint film, or the growth of moss or mold in shady and humid areas was observed. Example 6 A coating composition of the present invention was prepared using the following formulation. Composition (6) Soybean oil modified neutral oil type alkyd resin (solid content) 25 parts Titanium oxide 15 Calcium carbonate 10 Metal dryer 1 Anti-settling agent 1 Anti-skinning agent 1 Mineral spirit 15 Copper alloy powder 75 The copper alloy powder is , 77% copper, 20% nickel, 0% manganese, 0% zinc, 2% tin, aluminum
0.5% and 0.5% silicon were used. In its preparation, first, the ingredients except the copper alloy powder were mixed, and after kneading the mixture in a pot mill for a day and night, a predetermined amount of the copper alloy powder was added thereto, and the above composition was prepared by stirring with a disper. Air spray a regular alkyd resin primer at 30μ twice on the slate exterior wall of the poultry farm.
It was dried for one day at ambient temperature. Next, the coating composition of the present invention having the above formulation (6) was air-sprayed twice (dry film thickness: 60 μm), and after drying for 3 days, it was used. As a result of observing the use of this coating film for more than two years, no damage, deterioration due to excrement, or growth of moss or mold in shady and humid areas was observed. Example 7 A coating composition of the present invention was prepared according to the following formulation. Formulation (7) Vinyl chloride resin (solid content) 15 parts dibutyl phthalate 5 xylol 60 copper alloy powder 30 In the above formulation, the vinyl chloride resin is manufactured by BASF under the trade name Raloflex MP45 [vinyl chloride-isobutyl ether copolymer resin] The copper alloy powder is 86% copper, 10% nickel, 0% manganese, 2% zinc.
%, tin 1%, aluminum 1%, and silicon 0%. As for its preparation method, first, all the components were mixed and stirred and mixed using a disperser to obtain a desired composition. The objects to be coated were the slate inner walls and concrete floor of a pig farming facility, which were air-sprayed twice with a 50μ thick regular epoxy primer and allowed to dry at room temperature for one day.
Then, the coating composition of the present invention having the above formulation was air-sprayed twice (dry film thickness: 60 μm) and used after drying for 3 days. The usage status of this coating film was observed for more than two years. However, no damage was observed, no deterioration caused by excrement, no moss, and no mold growth. Example 8 A coating composition of the present invention was prepared according to the following formulation. Formulation (8) Acrylic emulsion resin 20 parts Titanium oxide 15 Water 30 Thickener 0.5 Dispersant 0.3 Antifoaming agent 0.5 Copper alloy powder 15 In the above formulation, the acrylic emulsion resin is manufactured by Nippon Carbide Industries Co., Ltd. Product name Nikazol
PL-667 (resin solid content 65%), copper alloy powder is copper
86%, Nickel 10%, Manganese 0%, Zinc 2%,
A material containing 1% tin, 0.5% aluminum, and 0.5% silicon was used. The above formulation was prepared by first mixing the ingredients except for the copper alloy powder, kneading the mixture in a pot mill for a day and night, then adding a predetermined amount of the copper alloy powder thereto, and further stirring and kneading with a disper. Select a concrete inner wall as the object to be painted, and apply 30μ of a regular acrylic emulsion primer to it.
I applied two coats of roller paint and let it dry for a day. Then, the coating composition of the present invention having the above formulation was applied twice with a roller (dry film thickness: 70 μm), and after drying for 3 days, it was used. The usage status of this coating film was observed for more than two years. As a result, no deterioration of the paint film, no moss, or no mold was observed. Example 9 A coating composition of the present invention was prepared according to the following formulation. Blend 9 (Main ingredient) Fluorine resin 50 parts Titanium oxide 15 Anti-settling agent 1.5 Xylene 35 Copper alloy powder 40 (Curing agent) Isocyanate resin 7 parts In the above formulation, the fluororesin is manufactured by Asahi Glass Co., Ltd. under the trade name Lumiflon LF200. (Non-volatile content 60%, OH value = 52)
The isocyanate resin is manufactured by Sumitomo Bayer Co., Ltd. under the trade name Desmodeur N75 (NCO content 16.5%).
Copper alloy powder is 86.9% copper, 0% nickel, and manganese.
10%, zinc 3%, tin 0%, aluminum 0.1%,
A material containing 0% silicon was used. To prepare the main ingredient, first mix the ingredients except for the copper alloy powder, then knead in a pot mill for a day and night, add a predetermined amount of the copper alloy powder to this, and stir with a disperser to form the main ingredient composition with the above-mentioned composition. Obtained. The base resin and curing agent were mixed at the time of use. The galvanized iron roof to be coated was coated with a 50μ roller of regular epoxy primer for galvanizing, dried for a day, then coated with a regular 40μ roller of epoxy intermediate coating, and dried for a day. Then,
The coating composition having the above formulation was applied twice with a roller (dry film thickness: 70 μm), and after drying at room temperature for one week, it was used. As a result of observing the usage conditions for more than two years, no damage, deterioration due to sunlight, or growth of moss or mold was observed, and it was found to have extremely excellent weather resistance and decorative properties. Example 10 A coating composition of the present invention was prepared according to the following formulation. Blend 10 (Main ingredient) Fluorine resin 50 parts Xylene 30 Copper alloy powder 50 (Curing agent) Isocyanate 7 parts In the above formulation, the fluororesin is Asahi Glass Co., Ltd.'s product name Lumiflon LF200, and the isocyanate resin is Sumitomo Bayer Co., Ltd. ) product name Desmodeur N75, copper alloy powder is 76.5% copper, 0% nickel, 20 manganese.
%, zinc 2%, tin 1%, aluminum 0.5%, and silicon 0%. To prepare the main ingredient, first, all the ingredients were mixed at once and kneaded with dispersion stirring. At the time of use, the base agent and curing agent were mixed and used. First, we air-sprayed the concrete floor of the pig farm with two 50μ coats of regular epoxy primer.
After drying at room temperature for one day, the coating composition of the present invention having the above formulation was air sprayed twice (dry film thickness 70μ).
After drying at room temperature for one week, it was used for normal use. As a result of observing the usage conditions for more than two years in this usage, we found that there was no damage, deterioration due to excrement, moss,
No mold growth was observed at all. Examples 11-19 Coating films were formed in the same manner as in Example 1, except that the copper alloy powder was replaced with the copper alloy powder used in Examples 2-10, respectively. The amount of copper ions eluted and the state of moss/mold growth in the resulting coating films were observed over time. The results are shown in Table 1 below. The test methods for determining the amount of copper ions eluted and the state of moss/mold growth are described below. Comparative Example 1 A coating film was formed in the same manner as in Example 1, except that copper powder was used instead of the copper alloy powder. The amount of copper ions eluted and the state of moss/mold growth in the resulting coating films were observed over time. The results are shown in Table 1 below. Comparative Examples 2 to 13 A coating film was formed in the same manner as in Example 1, except that a copper alloy powder having the composition shown in Table 2 below was used instead of the copper alloy powder in Example 1. The amount of copper ions eluted from the paint film and the state of moss and mold growth were observed over time. The results are shown in Table 1. The compositions of the metal powders used in Examples 1, 11 to 19 and Comparative Examples 1 to 13 are shown in Table 2.

【table】

【table】

【table】

[Table] Test method: 1 Amount of copper ion elution The steel plate on which the coating film was formed was immersed in distilled water in a beaker, and after 1 month, 6 months, 2 years, and 5 years had elapsed, the steel plate was removed from the beaker. ,New
After being immersed in 1000 c.c. of distilled water for 2 hours while injecting air, the copper ion concentration in the solution was measured. The elution amount was expressed in μg per cm ² /day. Note that moss, mold, etc. usually grow in extremely humid areas. However, it is very difficult to measure the amount of copper ions eluted at such locations. Therefore, experiments on the amount of copper ions eluted were conducted in water. Although the correlation between water and air cannot be determined quantitatively, if a certain amount or more of copper ions are leached in water for a long period of time, it is likely that moss, mold, etc. will continue to grow outdoors. It can be expected to have the effect of suppressing the period. 2 Condition of moss/mold growth If a steel plate with a coating film is left in a place with no direct sunlight, poor ventilation, and high humidity,
The surface of the steel plate was visually observed after 1 month, 2 years, 3 years, and 5 years. The evaluation of the surface of the steel plate was based on the following criteria. ◎: No moss/mold growth ○: Moss/mold growth is observed in very small areas ×: A large amount of moss/mold growth is observed Evaluation of test results: Generally, 10 μg/cm ² It is said that the antifouling properties of the coating film are maintained if copper ions are eluted for more than 1 day. Therefore, it is most preferable to elute copper ions at 10 μg/cm ² ·day or more over a long period of time. In the case of the present invention, the elution of copper ions is small at the beginning, and thereafter the amount of elution of copper ions gradually decreases, and the elution of 10 μg/cm ² ·day or more continues for a long period of time. According to the elution amount of copper ions,
The effect of preventing the growth of moss and mold lasts for a long time. That is, in the present invention, the elution of copper ions of 10 μg/cm ² ·day or more continues until five years have elapsed, and the effect of preventing the growth of moss and mold also persists until five years have elapsed. On the other hand, when using a copper powder made only of copper (Comparative Example 1), a large amount of copper ions are eluted at the beginning, and the amount of copper ions eluted after that is rapidly reduced. In Comparative Example 1, 10μg/
Elution of copper ions of cm ² ·day or more occurs until 6 months have elapsed. According to this elution behavior, moss and
Prevention of mold growth can be achieved for less than two years. Further, Comparative Examples 2 to 7 (different from the present invention in that no aluminum and/or silicon was added) and Comparative Examples 8 to 13 (different from the present invention in that no zinc and/or tin was added) In the case where copper powder is added (comparative example 1), the sustained elution of copper ions over a long period of time is superior to that in which copper powder is added (comparative example 1), but it is inferior to the present invention. That is, in both Comparative Examples 2 to 7 and Comparative Examples 8 to 13, the elution amount of copper ions of 10 μg/cm ² ·day or more persists until two years have elapsed, and the occurrence of moss and mold The prevention effect lasts for 3 reasons.
Until the end of the year.

Claims (1)

[Scope of Claims] 1 (a) 100 parts by weight of a color vehicle (solid content); (b) 3 to 25% by weight of at least one metal selected from nickel and manganese, and at least one metal selected from zinc and tin. A coating composition for land structures consisting of 0.1 to 5% by weight of at least one metal and 100 to 750 parts by weight of a copper alloy powder containing 0.1 to 1% by weight of at least one metal selected from aluminum and silicon. thing. 2. The color vehicle is at least one selected from acrylic resin, urethane resin, fluororesin, epoxy resin, chlorinated rubber resin, polyester resin, vinyl resin, alkyd resin, melamine resin, and oil-based varnish.
The coating composition according to claim 1, which is a seed. 3 (a) 100 parts by weight of a color vehicle (solid content), (b) 3 to 25 weight % of at least one metal selected from nickel and manganese, and 0.1 to 25 weight % of at least one metal selected from zinc and tin. 100 to 750 parts by weight of a copper alloy powder containing 5% by weight and 0.1 to 1% by weight of at least one metal selected from aluminum and silicon, and (c) 150 parts by weight or less of a coloring pigment for land structures. Paint composition. 4. The color vehicle is at least one selected from acrylic resin, urethane resin, fluororesin, epoxy resin, chlorinated rubber resin, polyester resin, vinyl resin, alkyd resin, melamine resin, and oil-based varnish. The coating composition according to scope 3.