JPH09194901A - Production of patina for antibacterial and antimycotic usage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase effect of trace metal action by using a metallic ion, mainly a copper ion and a copper alloy ion, generating patina on the surface of copper powder, etc., for preventing copper from being corroded and aiming at synergistic effect between the copper ion and the patina. SOLUTION: Copper powder or copper alloy powder are blended with a resin to be a coating material, are applied on a surface of an objective equipment material and, then, an accelerating liquid 3 is applied on a covering coating layer 2 to generate the patina. Otherwise, copper series powder such as copper powder and copper alloy powder are blended with antibacterial cuprous oxide system, zinc oxide system, silver system and far infrared radiation system or copper system powder is arbitrarily blended with various kinds of chemicals, etc., to form a coating material and to generate patina. In such a manner, antibacterial effects are increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention applies metal ions, mainly copper and copper alloy ions, and further aims at the synergistic effect of copper ions and patina by generating patina on the surface of copper powder or the like to prevent copper corrosion. It is an application that further increases the effect of trace metal action.

[0002]

2. Description of the Related Art Conventionally, polymer coordinating metal type, quaternary ammonium chloride, halodiallyl urea type, guanidine type phenol type, fatty acid ester type, Approximately 7 when including sugar derivatives, natural products, inorganic metal products, and products with deodorant function.
Although more than 00 formulations are marketed from the industrial field to the range of household products, improvements in efficacy and safety have been sought.

[0003]

It is a well-known fact that metal ions, mainly copper ions, have the action of killing algae and exert a bactericidal action, that is, the trace metal action effect is a well-known fact, but copper-based metals are easily oxidized and corroded. When it is black, the bactericidal effect, that is, the trace metal action effect disappears, and it is intended to solve the drawback that was only the initial effect.

[0004]

That is, if it is possible to take measures to prevent the oxidation of the surface of the copper-based metal, the effect of only the initial effect can be permanently utilized for the bactericidal effect of the trace metal effect. The effect varies depending on the shape of the copper powder, but from the shape 1 Dendritic powder of electrolytic copper powder that causes powder to be directly ejected to the cathode by the electrolysis method. 2 Irregularly shaped powder produced by the atomization method. 3 Irregular and spongy powders produced by the reduction method are suitable for the powder, and the specific surface area of the copper powder is as large as possible and the apparent density of 0.5-5,0g / cm ³ By utilizing the unevenness, the adhesive force when the patina is generated is strengthened, and the application of the specific surface area enables the patina to be generated in a short time. When only the ease of applying the paint is taken into consideration, it is easy to apply fine powder even if the particle size is as large as possible, but copper powder having a shape of irregularly shaped powder is 74 μm or less is suitable for ease of application. Even if the size is 74 μm or more, it can be sufficiently used by taking advantage of the surface roughness. As described above, by using the uneven layer of copper powder, that is, the powder having a large specific surface area, it bites into the grain boundaries of the unevenness of the copper surface in the process of forming the patina, and some handling and friction and abrasion cause some peeling of the convex portion. Therefore, there is no problem in the surface condition and there is no problem in the construction. The influence of the accelerator on the paint was also small because the use of a powder having a large specific surface area of the copper powder made it possible to use the accelerator as thin as possible (approx. 80 g of accelerator for 1 liter of water). It is sufficient to mix 80 g of the accelerating liquid and the chemical that is the accelerating liquid with respect to 1 liter of water. Copper carbonate, copper acetate, hydrochloric acid, ammonium chloride,
A relatively non-toxic accelerator such as ammonium sulfide or sodium chloride can be used thinly. Even if toxic copper sulfate, cupric chloride, etc. are used, it is sufficient to mix about 50 g of the chemical in the accelerating liquid with 1 liter of water, and there is no problem with the coloring effect. Of course, it is not necessary to use toxic chemicals such as hypochlorous acid and mercuric chloride, which have a coloring effect. The concentration of the accelerating liquid can be adjusted to green, brown, or blue by increasing the amount of hydrochloric acid, copper chloride, ammonium chloride or the like. Furthermore, coloring such as blue (copper hydroxide ammonia), black (copper sulfide, copper oxide), red (cuprous oxide), etc. is also possible with sodium sulfite, ammonia water,
By mixing the bath composition of barium acetate sulfide, potassium sulfide, copper nitrate, sodium chloride, tartaric acid, etc., it is easy to prepare each color as well as patina by controlling the temperature, humidity, water, etc. Solution concentration,
And toxic acid, mercuric chloride, copper sulfate,
It is necessary to use copper nitrate etc. or to mix it with a coloring agent in the accelerating liquid itself, but in the case of powder with a large specific surface area, the reaction is quick and a relatively non-toxic accelerating liquid can be used. is there. As described above, the use of copper powder unevenness and the use of specific surface area are non-toxic liquid, relatively less toxic liquid, capable of developing color even when the concentration is low, and degreasing as a pretreatment.
There is no need to perform a complicated process such as corrosion, and the facilitating liquid easily causes copper ions to spontaneously emerge from the surface of the copper powder in the coating layer of the copper paint and naturally generate, so that patina can be easily generated.
In short, generate patina on the surface of copper powder and copper alloy powder, and copper ions and patina, that is, basic copper carbonate, basic copper hydrochloride,
It is to utilize the synergistic effect of basic copper acetate.

[0005]

[Function] The purpose is to generate patina on the surface of copper and aim at the synergistic effect of the sterilizing effect of copper ions and patina. Patina is a kind of rust that forms on the surface of copper, is almost insoluble, is a dense crystalline substance that is tightly bound to the surface of copper and has the role of protecting the surface of copper. Further, with time, cuprous oxide is gradually generated at the interface with the copper substrate, this cuprous oxide serves as a binder between the patina and the copper substrate, and the effect of cuprous oxide is also antibacterial. The effects of microalgae can also be applied.

[0006]

EXAMPLES The present invention will be specifically described below with reference to examples, but the scope of use of the copper powder, the accelerating liquid, and the resin is not limited thereby. (A) On the surface of the asbestos slate plate (1), electrolytically-deposited copper powder and powder of 75 μm or less are applied as a paint in a ratio of 1: 1 of a one-part polyester resin, and naturally dried, and then the coating is applied. In the layer (2), 1 part of the accelerating solution (3) copper acetate 21 parts hydrochloric acid 15 parts copper carbonate 25 parts ammonium chloride 9 parts tartaric acid 5 parts sodium chloride 5 parts A total of 80 parts of bath composition was mixed without pretreatment (2 ) Apply a brush on the surface and leave it to dry naturally. After a few minutes (a time difference of about 5 to 10 minutes is a subtle influence of environmental temperature, humidity, or weather), a green-blue film was densely formed on the surface along the unevenness of the copper powder. There is no deterioration of the paint due to the accelerating liquid, and after a few hours (after about 7 hours), the cohesive effect at the time of accelerating the patina is assisted, there is no problem of surface hardening, and the adhesion strength is 18,6f with the asbestos slate board.
There was / m ² . (B) On the surface of the asbestos slate board, the bath composition paint of Example (a) was mixed with an inorganic metal system at a weight ratio of 10%, and after coating, a accelerating liquid was applied to the coating layer to generate patina and a humidity of 60% was tested. It was left in the room for 60 days. The coating layer was not deteriorated by the accelerating liquid, and patina was uniformly generated, and there was no problem with surface hardening or generation of mold. The metal ion of the patina coating material that constitutes the present invention has a trace metal action of constantly producing a very small amount of ozone (O ₃ ) for a long period of time, has a great antibacterial effect against all pathogenic bacteria, and is effective for a long period of time. is there. That is, due to the catalytic action of metal ions, oxygen is partially converted into active oxygen and a bactericidal action is exerted on microorganisms, and it is effective against microorganisms such as general pathogens, ants, bacteria, fungi, and marine algae. At the same time, the results are shown in Table 1.

[Table 1] Test method (The sample was cut into an appropriate size, placed on a potato dextrose agar plate medium, uniformly sprayed with a mixed spore suspension of the above strains, and cultured in a thermostat at 25 ° C.

[0007]

EFFECTS OF THE INVENTION The antibacterial properties of metal ions, especially copper ions are utilized, and it is a trace amount metal action of copper type. By preventing corrosion of copper, the copper type coating is antibacterial and fungus-resistant to atmospheric corrosion. By preventing the corrosion of marine organisms in the sea by patina, copper ion effect, antibacterial cuprous oxide type, zinc oxide type, silver type, far infrared application or by appropriately mixing various compounds with copper type powder , Further increases antibacterial properties. Its application can be applied to a wide range of measures from the industrial field to the life-related area as a measure against bactericides, fungi, etc., and its safety, efficacy, and sustainability can be fully demonstrated, and its usability is particularly simple. It is simple and has a wide range of applications.

[Brief description of the drawings]

FIG. 1 is a side view of the present invention.

[Explanation of symbols]

 1 Asbestos slate board 2 Paint coating layer 3 Accelerator liquid (pale blue)

Claims (1)

[Claims] 1. A coating of copper powder to generate patina with an accelerating liquid, or 0.1 to 20 parts by weight of an inorganic metal or metal coordination polymer is mixed with 100 parts by weight of the copper powder to form a coating. A method for producing patina that is generated by the accelerating liquid.