JPH0810698A - Coating - Google Patents

Abstract

PURPOSE:To provide a method for coating by which it is possible to coat economically in a short time without any harmful effects to humans and livestocks and obtain a coating film with high weatherability and dustproofing and antistatic properties and lasting presentable look. CONSTITUTION:This coating method consists of a precoating treatment step comprising a microbial treatment, a pollutant treatment and a pollution phenomenon treatment and a main coat treatment step for applying a coating containing an antibacterial agent and dustproofing and antistatic agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method suitable for antifungal and antifouling coating.

[0002]

2. Description of the Related Art Generally, when performing a coating treatment on various structures, the adjustment of the base material is the most important factor controlling the performance of the coating film, and its contribution rate is said to exceed 50%. But it is also the most expensive process.

After the coating process is completed, it is not possible to know how carefully the substrate adjustment has been performed. Therefore, it is important to determine the optimum substrate adjustment grade when designing the coating process.

Next, the most important point before the coating process is to carry out the construction under sufficient control so that the grade of the base material adjustment is maintained, and to inspect the condition before the final actual coating.

Further, it is important to carry out the painting according to the specifications. Especially, the weather (temperature, humidity, weather) at the time of construction and maintenance of the correct coating thickness are important.

Although there is a provisional standard coating specification for repainting, the state of the old coating film is not uniform, so it must be examined from various angles.

First, a coating system is selected after conducting a past coating history and a detailed coating film investigation on an actual product. Especially when adopting a coating system different from the old coating system, it is necessary to fully understand the characteristics of the selected coating.

The necessity of the ground investigation before the coating treatment has been recognized and carried out by a coating worker in the field of performing heavy anticorrosion coating on a steel structure. As for, the reality is that the lack of recognition of its importance. In other words, the actual situation is that recoating is performed on the coating film stains due to the adhesion of dust or sea salt and the generation of mold.

On the other hand, although water washing of the base material before the coating process is being established, there are many cases where the high pressure jet only removes the adhered matter and the mold is not eradicated or eradicated.

Recently, there are cases in which the necessity of mold removal is recognized and implemented, but the main use is commercially available sodium hypozinc oxide, etc., and complaints arise from the coating operator itself and the neighborhood. ing. In addition, it is in a state where it is not touched when it feels dirt other than mold.

[0011]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and is safe and dust-free (dust, iron rust, efflorescence, etc.) without damaging the skeleton and foundation of a building or the like. Hands, oils and fats) can be removed,
Moreover, it is an object of the present invention to provide a coating method capable of solving a state that cannot be removed by a normal washing method due to the propagation of fungi or moss and to obtain a good finished state having dust resistance and antistatic property. To do.

[0012]

The coating method of the present invention is a coating pretreatment step comprising a microbial treatment, a contaminant treatment and a contamination development treatment, and a coating containing a paint containing an antibacterial agent and a dustproof / antistatic agent. This processing step is included.

The drug used for the treatment of the microorganisms is an inorganic chlorine compound containing flavonoids, an aromatic substance and a surfactant.

The agent used for the treatment of the pollutant and / or the treatment of the pollution phenomenon is a cleaning agent containing components derived from the plant contents and constituents.

The above coating composition contains a reaction product of 3,6-dichloropyridazine and parachlorometaxylenol as an antibacterial agent, and an alkylbenzene sulfonic acid trialkyltin salt as a dustproof / antistatic agent.

[0016]

The present invention will be described in more detail below.

The microorganism treatment in the pretreatment step of the coating method of the present invention aims to completely eradicate the microorganisms which impair the appearance and accelerate the deterioration of the coating film.

That is, when spores of microorganisms or the like remain on the substrate during the preparation of the coating base, they proliferate and damage the coating film, so that such a condition is eliminated.

The mechanism of microbial treatment utilizes a mechanism that acts on the action function of microorganisms and actively kills them.

Specifically, (a) it acts on the cell membrane of the microorganism to leak intracellular substances, lyse the cytoplasm, and lyse it by reacting with phospholipids. (B) by uncoupling in oxidative phosphorylation. Disruption of proton driving force (c) Forming lipophilic K ⁺ complex and killing by mitochondrial membrane formation, inhibition of active transport of acid and amino acid (d) H ⁺ inside cell, instead Na ⁺ and K ⁺ are discharged to the outside of the cell so as to keep them electrically neutral and killed (e) Oxygen and SH groups of cellular proteins are oxidized and lysed and killed

As described above, the bactericidal and algicidal agents are brought into contact with the microorganisms to cause the cell membrane damage of the microorganisms and the like, so that the microorganisms are killed immediately with good effect.

Next, the contaminant treatment and the contamination phenomenon treatment in the coating pretreatment step in the coating method of the present invention are roughly as follows.

From the architectural necessity, the definition of dirt is defined as "a visual phenomenon that is regarded as something inconvenient or unpleasant to a person with respect to an intended mold".

Further, depending on the type of paint, the required degree of base treatment differs, and if the degree of treatment of rust, earth and sand, microorganisms, etc. is poor, the rust preventive performance and adhesiveness may be lost at all. Therefore, it is necessary to understand the relationship between the paint and the surface treatment.

That is, the treatment of contaminants and the treatment of contamination phenomenon are to improve the corrosion resistance and adhesion of the coating base and increase the added value of processing.

Generally, dirt is divided into solid dirt and liquid dirt. Here, the solid dirt is dust and microbes such as fine earth and sand, cotton dust, carbon particles (soot), dandruff, and dead bodies of insects. Liquid stains include hydrocarbons, glycerides, tars, microbial secretions, and the like.

Considering the mechanism of dirt, first, there is a "contact mechanism" in which a substance causing dirt, for example, dust or the like, approaches and contacts the surface of an object, and the dirt substance is retained without falling. Retention mechanism ". Therefore, the removal of dirt means that the dirt substance may be separated from the substrate by an appropriate means. Hereinafter, the contact mechanism and the holding mechanism will be described in detail.

The contact mechanism is further classified into a physical mechanism and a chemical and biological mechanism.

The physical mechanism is as follows: (i) direct contact (ii) dust fall in air (gravitational sedimentation) (iii) diffusion contact (iv) air movement (collision adhesion) (v) material surface temperature Differences (thermal adhesion) (vi) Changes in flow velocity (gravitational sedimentation) (vii) Electrostatic absorption (electrostatic adhesion), etc.

The chemical and biological mechanisms include (i) stains caused by dew condensation (ii) rain leaks, splashes, and touch with wet hands (iii) steam is applied (iv) petroleum, alcohol, acid, alkali , Liquids such as sulfides (V) Touching fire (Vi) Receiving heat (Vii) Irradiating with light (Viii) Biting scratches such as mice (ix) Growing microbes (X) Depending on plants such as ivy Etc. can be mentioned.

Next, the holding mechanism will be described.

Dirt immediately after it adheres to the building frame, etc.
Generally speaking, it is relatively easy to remove. That is, the dirt is alive and becomes "absorption" from the "riding" state over time, and is further "sucked" into the material or "invaded" the material. become. Therefore, the timing of cleaning is important.

In particular, as a state in which the coating film is affected, (i)
Inhaling (ii) Sticky, solid (ii)
i) Microorganisms grow, microorganisms rot (iv) are attacked, matte, scratched, burnt, exfoliate (v) Discoloration, fading, etc. can be mentioned.

Next, the mechanism for removing the contaminants by separating the contaminants from the substrate will be described.

As means for removing dirt, there are five stages such as (i) brushing (ii) washing with water (iii) washing with detergent (iv) removal with chemicals (v) physical means.

(I) includes a swab, broom, wipe, etc., (ii) includes wiping / washing, etc., and (iii) physical means such as washing, wiping, and rubbing with a detergent. Is also used together to remove dirt. (iv) includes bleaching with a bleaching agent, use of a special chemical such as acid or alkali,
(V) also means scraping with a file or cleanser.

In the present invention, the above-mentioned (iii) and (iv)
Intended for cleaning agents.

That is, after the substrate and the dirt attached to it are wet, the dirt is removed from the substrate and removed.

Washing solid dirt means the reverse process of agglomeration, and thus energy is required to remove solid dirt. That is, while the substrate / dirt interface is generated in the part where the substrate is dirty, the substrate / water interface and the dirt /
Since there is no water interface, the interfacial energy is reduced and stabilized as a whole, so unless the energy equal to or more than this reduced energy is applied, the dirt does not leave the substrate.

Mechanical energy and physical energy are usually used as energy for that purpose, and the water flow of the washing machine, the action of hitting, shaking, and rubbing with ultrasonic waves or hydraulic jets produces this energy. Plays.

The present inventor believes that the role of the cleaning agent is to remove dirt with a minimum amount of energy, and that plant extracts, thermal decomposition products and hot water soluble substances are The culmination of energy, currently used water / surfactant type, water / alkali type (sodium hydroxide, sodium carbonate, sodium phosphate, etc.), water / acid type (sulfuric acid, nitric acid, oxalic acid, citric acid, etc.) ), Water / bleach type (sodium hypochlorite, sodium percarbonate, etc.), water / enzyme type (protease, alkaline cellulase, lipase, etc.), water / chelating agent (EDTA, sodium citrate salt, etc.) , I found that it was not inferior.

That is, it is considered that the product of the present invention contains more than 200 kinds of components and has the characteristics of commonly used acids such as hydrochloric acid and sulfuric acid, and various surfactants.

Further, to facilitate cleaning, the potential energy curve is changed depending on the components of the product of the present invention, and the height of the peak of the curve is made as small as possible.
Further, the product of the present invention is ionicly similar to the anionic surfactant which is a surfactant, and it is considered that the effect is enhanced by increasing the surface potentials of the stain and the substrate.

Next, the detachment of the liquid soil from the substrate is the reverse process in which the liquid adheres to the solid surface of the substrate. Therefore,
The removal of liquid dirt is usually subject to deformation and is removed from the substrate via a so-called rolling-up process. in this case,
Interfacial tension is considered to be an important factor.

Further, although there is a phenomenon that cigarette smoke is soaked into the coating film of the interior coating material in the room, since the dirt particles are trapped in the gel structure, the product of the present invention destroys the gel structure and stains. Are removed from the substrate, that is, the product of the present invention removes stains by the action of emulsification, dispersion, solubilization and the like.

In the present invention, the byblowing product described below is used as a cleaning agent as a dirt removing means.

By-blowing products are by-products.
This is the meaning of "duct".

That is, it is a by-product produced in the process of producing flavonoids which are deodorant components from plants.

The by-products include a large amount of organic acids and carbonyl compounds capable of dissolving dirt components such as calcium, magnesium, iron, manganese and silica, and also have phenolic and basic components having a bactericidal effect on microorganisms. ,
Contains alcohols that are effective against oil stains. Therefore, by using such a by-product, it is possible to obtain the same cleaning effect as that of the inorganic acids hydrochloric acid and sulfuric acid, and depending on the material, the chemically synthesized organic acid (formic acid,
Oxalic acid, citric acid, etc.) has a unique effect because it is a mixed product rather than a single product.

The components of the by-products as described above will be outlined.

(A) Organic acids: formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, crotreic acid, iricaproic acid, tiglic acid, enanthic acid, levulinic acid, oxalic acid, succinic acid, malon Acid, gallic acid

(B) Carbonyl compound: formaldehyde, acetaldehyde, propionaldehyde, isobutyraldehyde, butyraldehyde, valeraldehyde, isovaleraldehyde, glyoxal, acrolein, crotonaldehyde, furfural, 5-hydroxymethylfurfural, acetone, methylethylketone, methylbutyl. Ketone, methyl isopropyl ketone,
Methyl butyl ketone, diacetyl, methyl cyclopentenone, methyl cyclopenterone

(C) Phenols ... Phenol, o,
m, p-cresol, 2,4- and 3,5-xylenol, 4-ethyl- and -4propylphenol, guaiacol, creozole, 4-ethyl- and 4-propyl-guaiacol, pyrogallol, catechol, 5-methylpyrogallol , 5-ethylpyrogallol- and 5-
Propyl pyrogallol-1,3-dimethyl ether, 4
-Methyl, 4-ethyl and 4-propylcatechol

(D) Alcohols: methanol, ethanol, propanol, isopropanol, allyl alcohol, isobutyl alcohol, isoaluminum alcohol

(E) Basic component: ammonia, methylamine, dimethylamine, pyridine, methylpyridine,
Trimethylamine, Cimethylpyridine

(F) Neutral component: levoglucosan, acetol, maltol, organic acid methyl ester, veratrol, 4-methyl, 4-ethyl- and 4-propylveratrol, 3,4-benzpyrene, 1,2,5. 6-dimens anthracene, 20-methylcholanthrene, α-
Hydroxy-γ-valerolactone, tannin

As described above, the by-products include formic acid, acetic acid, oxalic acid, etc., which are the main components of the cleaning agent, and tannin, pyridine, which have the effect of a corrosion inhibitor necessary for a corrosive environment.
Since it contains a large amount of glucose, fructose, mannose, alocaloids, and aldehydes, it dissolves and disperses corrosion products and scale components, but the feature is that the metal base material does not corrode as described later.

Further, the above-mentioned tannin also has an anticorrosive film forming function.

Tannin is the most widely dispersed phenolic component in the bark. Chemically, it is classified into two types, complex tannin and hydrolyzed tannin.

Complex tannins are complex mixtures of phenols that strongly resist acid hydrolysis and, rather, undergo polymerization to convert the insoluble amorphous substance flovafene.

Hydrolyzed tannins are a group that are hydrolyzed into carbohydrates (usually glucose) and gallic acid or related compounds by the action of acid or enzyme.
Mainly producing gallic acid is called gallo tannin,
Those that give ellagic acid in addition to gallic acid are called ergutannin.

Any of the tannins reacts with iron to form an insoluble amorphous substance called iron tannin, which inhibits a factor that corrodes iron. That is, the iron base material and the tannin react with each other to form a strong anticorrosive film on the surface of the iron base material. Utilizing this anticorrosive film formation mechanism, tea leaves have been used as a boiler can boiler agent to prevent corrosion.

Next, the antibacterial mechanism by the antibacterial agent consisting of the reaction product of 3,6-dichloropyridazine and parachlorometaxylenol contained in the paint used in the main coating process will be described.

The antibacterial agent refers to a drug that suppresses / prevents the growth of harmful microorganisms. It has no direct inhibitory effect on the cell membrane, is a bacteriostatic effect, and has a repellent effect,
It is also called a repellent because it prevents biological pollution.

The action indicators and action effects of the antibacterial agent will be described below.

(A) Inhibits cell wall synthesis on cell wall to stop proliferation (b) Inhibits aroton flow and damages cell membrane (c) Impairs binding to nucleic acid composite membrane (D) Regarding protein synthesis, it acts on liposome subunits and inhibits protein synthesis. (E) Inhibits drug acid synthesis or utilization.

By the action of the above-mentioned antibacterial agent, the microorganisms die due to their lifespan while the cells cannot be divided.

Next, the dustproof property and antistatic property due to the dustproof / antistatic agent contained in the paint used in the main coating process will be described.

Like the other resins, the resin constituting the paint is excellent in electric insulation, but it is hydrophobic so that the surface is easily charged with static electricity, and once it is charged, the charge is difficult to escape, and the resin is produced, processed and used. In each scene, various electrostatic damage occurs.

It is a surface active agent having a well-balanced kind of metal or a hydrophobic group and a hydrophilic group, which plays a role in making it less likely to be charged with static electricity and easy to escape.

The surface of the coating film not treated against static electricity is
Generally, the surface resistivity is as high as 10 ¹⁴ to 10 ¹⁷ (Ω),
Therefore, dirt easily adheres to the surface of the coating film. There is also a view that most of the dust particles on the surface of the coating film are absorbed by static electricity.

Therefore, the alkylbenzene sulfonic acid trialkyltin salt contained in the coating material of the present invention makes the surface of the coating film to have a surface specific resistance value of 10 ¹² (Ω) or less, which makes it difficult to be charged and dust is not attached. Lost.

Next, the scope of application of the present invention will be described.

As a drug for treating microorganisms, sodium hypochlorite has begun to be generally used, but the generation of chlorine odor and local irritation are regarded as problems. It is the microorganism treatment agent of the present invention that the present inventor has improved its drawbacks and made it easier to use.

The product of the present invention can be used not only in the outdoor portion of the building but also in all the locations such as indoor bathrooms where mold is generated. As the method of use, various methods such as a spraying method, a dipping method, and a wiping method can be adopted.

The bactericidal / algicidal agent that can be used for buildings is safe and easy to use, and it is also important that it does not cause secondary damage. It is also required that the planting and pond seafood will not be affected.

Therefore, it is difficult to use the quaternary ammonium salt-based, metal-based, organic chlorine-based, peroxide-based, organic nitrogen / sulfur-based, organic bromine-based, organic nitrogen-based, etc. used for water treatment.

In addition, organic phosphorus-based, organic sulfur-based, lime-sulfur mixture, hydantoin-based, guanidine-based, triazine-based, copper agent, urea-based, agricultural antibiotics, organic tin-based, etc. which are registered as agricultural chemicals are also effective. Can be used, but cannot be used in dense areas.

Next, many cleaning agents for treating pollutants and pollution phenomena exist for the purpose of removing dirt components, but severe conditions are attached depending on the material of the building structure and the place of use.

For example, rust stain, efflorescence, white flower phenomenon, etc. can be easily removed with a mixture of hydrochloric acid and hydrobromic acid or acidic ammonium fluoride.

However, hydrofluoric acid and acidic ammonium fluoride also have the ability to dissolve glass. Therefore, it is necessary to take measures to protect the glass of the building to be washed even if the curing sheet is applied in consideration of the neighborhood. It is possible to take defensive measures without considering the cost.

Also, complete protection measures are required for coating workers. Of course, there are cases where hydrofluoric acid is currently being used for cleaning corridors without the user's knowledge. However, it is not possible to use dangerous poisonous substances for cleaning the outer walls of buildings.

Although sodium hydroxide, a surfactant or the like can be used to attach dust or oil or fat, it is difficult to take countermeasures in a place where traffic is frequent.

On the other hand, from the viewpoint of chemicals, phosphate, sulfamate and EDTA, which are also known as mild detergents
There is a chelating agent, etc., but it is not easy to use due to the conditions of use.

Recently, detergents containing polysaccharides, amino acids, surfactants, citric acid, fatty acids, etc. as components have been developed, but it is difficult in terms of cost.

The present inventor has discovered and pursued that Vibro products have a cleaning effect in the process of extracting deodorant components from plants, and as a result, has developed a cleaner that is harmless to humans and animals. That is, plant extracts, thermal decomposition products, hot water soluble substances, organic acids,
Lactones, alcohols, esters, aldehydes and their derivatives, ketones, saccharides, bases, hydrocarbons, furans, etc., containing 50 kinds of% order content, 200 parts of ppm order content. However, it was found that the reaction with the soil component is also comparable to that of the combination product of the chemically synthesized products.

In addition, when a synthetic inorganic acid or organic acid is used, it is necessary to add an anticorrosive agent to the metal, but tannin which reacts with the metal to form an anticorrosive film in a plant extract or the like. It was confirmed that it also contributed to the reality by including etc.

In recent years, water-based paints have been mainly used as the interior and exterior paints for buildings from the viewpoint of resource saving, depollution and safety. However, since water-based paints use water as a dispersion medium, microorganisms that feed on thickeners, emulsifiers and plasticizers in the paints propagate. In addition, the coating film is in a state where mold is likely to occur after coating. Therefore, paint manufacturers have added antifungal agents to the paint coatings on the market to prevent the growth of mold during and after coating.

Examples of the fungicide include benzimidazole type, nitrile type, isothiazoline type, haloallyl sulfone type, iodopropargyl type, benzothiazole type, phenol type, organic tin type, adamantane type, pyridine type,
Examples include N-haloalkylthio-based, oxyquinolinoline-based, quaternary ammonium salt-based, triazine-based, thiadiazine-based, anilide-based, dioticcarbite-based, bromine-based, etc. It is the only drug that acts on.

The present inventor believes that the fungicide-proof property should continue to exist as long as the coating film is sound, and 3,6-dichloropyridazine- which has the characteristics of non-exhibition and poor solubility as an antibacterial agent. The reaction product of parachloromethaxylene was considered optimal.

Next, the pretreatment process for coating and the main treatment process for coating in the coating method of the present invention will be described in detail.

As a result of earnest research, the inventor of the present invention applied a coating method suitable for anti-mold and anti-fouling when newly constructing a building and equipment, and an anti-mold and anti-fouling method when repainting an existing building. Developed a new painting method.

First, a method for antifungal and antifouling coating when a new building or equipment is installed will be described.

When performing a pretreatment process for painting on a new building,
Remove dust and other foreign matter adhering to the coated surface of the building. As a paint, the water content of the base material is 9% or less, and the surface strength of the base material is 5
Some paints require kg / cm ² . There are also paints that require sealer application for ground investigation. It is necessary to adjust the coating amount (kg / m ² ), the number of coatings, and the coating method according to the raw material components of the coating and the purpose.

On the other hand, the paint used in the main coating process is
Various materials can be used as long as they are composed of a film-forming element, a solvent, a coating pigment and auxiliary materials. However, due to the nature of the reaction product of 3,6-dichloropyridazine, which is an antibacterial agent, and parachlorometaxylenol, if the paint base is a cation, a coagulation reaction will occur and the coating surface will not be uniform, so it must be avoided.

Further, in the case of the polyurethane resin paint, in order to obtain the same effect as that of the acrylic resin paint, it is necessary to increase the addition amount of the antibacterial agent by three times. Oil-based paint, fiber derivative paint, phenol resin paint, alkyd resin paint, aminoalkyd resin paint, vinyl chloride resin paint, silicone resin paint, fluororesin paint, unsaturated resin paint, epoxy resin paint, emulsion paint, water-soluble resin paint It can be added to powder coatings, anticorrosion coatings, etc.

The reaction product of 3,6-dichloropyridazine, which is an antibacterial agent, and parachlorometaxylenol has a wide antibacterial spectrum, and is effective against 268 species of 15 genera with respect to mold, bacteria, and yeast according to the test results of the Japan Food Analysis Center. Therefore, the proliferative function of the algae bryophytes disappears at low concentrations.

Since this antibacterial agent is sparingly soluble (about 2 ppb) and non-volatile, an effect can be expected at 0.2 to 3.0% by weight of the total weight of the coating composition (Patent Nos. 1460759 and 1407879). , JP-A-63-101304 and JP-A-63-101305: Applicant Norio Saito).

The trialkyltin salt of alkylbenzene sulfonic acid, which is a dustproof / antistatic agent, has a surface resistivity value of 10 ¹¹ to 10 at 3 to 6% by weight based on the total weight of the coating composition.
¹² (Ω) can be maintained. Furthermore, the dustproof and antistatic agents are
Since it can be kneaded into a resin after monomer polymerization and before pelletization, it can be easily incorporated into a coating composition (Patent No. 1376127: Applicant Norio Saito).

Secondly, a method of anti-mold / anti-fouling coating for repainting an existing building will be described.

When water can be used, such as on the outer wall of an existing building, roof, bathroom, etc., (1) Water is evenly sprayed on the surface to be coated to provide hydroponics. The purpose of hydroponics is to make it easier for the cleaning agent to adapt to the dirt factors adhering to the surface, and to prevent the cleaning agent from seeping in if there is a crack on the surface to be coated (2) Depending on the condition of the dirt When the microbial treatment is carried out first, a 5 to 20-fold diluted solution of the microbial treating agent of the present invention is evenly applied (at a rate of about 150 to 200 g / m ² ) (3) 30 kgf after 5 minutes from application of the microbial treating agent Wash with water at less than / cm ² . At this point, if the dirt is sufficiently removed, proceed to the inspection / repair process of the dry / ground surface. (4) Microorganisms and microorganism-mediated dirt factors could be removed, but precipitates such as iron rust, dust, and calcium remained. If the cleaning solution of the present invention is 5 to 20 times diluted,
Spray at a rate of 0 to 200 g / m ² (5) After spraying the cleaning agent for 5 minutes, wash with water pressure of 30 kgf / cm ² or less

The substrate is cleaned by the steps (1) to (5) described above. That is, the pretreatment process for coating is completed by repairing cracks, cracks, floats, etc. of the concrete or cement mortar that is the base of the outer wall of the coating finish.

Outer concrete finished outer wall, cement mortar finished outer wall, outer wall tiled finish, AL
For the deterioration phenomenon such as rust stain on the outer wall of C panel, see (1) to (5) above.
Can be handled in the process of. Further, stains such as bleeding on the sealing material, which are peculiar to the finishing material, can be treated by using the cleaning agent of the present invention at a high concentration.

Dirt and stains on steel parts and members and aluminum alloy parts and members attached to a building can be similarly recovered.

Whether the bathroom is made of plywood, ALC, tile, mortar, PC concrete, or stone, the dirt is metal soap, dust, mold, human secretions, or the like. Against these, it can be sufficiently removed by spraying the microbial treatment agent of the present invention.

When the groundwork adjustment is completed, as in the case of the new coating, the above-mentioned antibacterial agent, dustproof and
A paint containing an antistatic agent can be applied. That is, it is possible to remove stains (dust, iron rust, efflorescence, hands, oils and fats, etc.) safely and in a short time without damaging the skeleton and foundation of buildings, etc. It is possible to solve the state that cannot be removed by the washing method and obtain a good finished state that also has dust resistance and antistatic properties.

In recent years, from the viewpoint of saving resources and energy and protecting the global environment, it is not only necessary to construct new buildings, but also to improve the durability of existing buildings and implement appropriate conservation. Has become a public request.

Therefore, it is believed that the above-mentioned coating method of the present invention, which is a technique for improving the durability of non-structural members, will be accepted by the world. That is, the pollution factors of the outer wall are general pollution (dust pollution), structural pollution (iron rust, green rust), biological pollution (mold,
Algae), and the indoor pollution factor is biological pollution (mold). Therefore, it is considered that general contamination and biological contamination will not occur until the life of the coating film is exhausted, if the contamination factor of the base is completely eliminated and the antibacterial agent and the dustproof / antistatic agent are contained in the topcoat paint.

Of course, in the case of an iron structure by undercoating, structural contamination can be prevented by applying an antiseptic paint.

[0110]

EXAMPLES Examples of the present invention will be described in detail below.

Example 1 A coating based on an acrylic rubber emulsion resin was added to an invention product (1.0% by weight of a reaction product of 3,6-dichloropyridazine and parachlorometaxylenol and trialkyltin alkyl benzene sulfonate). 4.0% by weight) and 1.2% by weight of each of the commercially available antifungal algae agents Biocut AG (manufactured by Dainippon Ink), Preventol CR (manufactured by Bayer Japan), and Marineside SA-701 (manufactured by San Nopco). A sample was added to make a sample.

[0112] The test piece is JIS mortar plate, a slate plate, 0.9kg / m ² at Sunakotsu roller to the intermediate, 2 coats at Chuke wool roller of 0.3kg / m ² to the top coat (paint interval 8 hours), and after natural drying for 7 days, soak in water at room temperature (under running tap water) for 30 days, and after 24 hours in hot water at 60 ° C,
A test for anti-algal and anti-fungal effects was conducted.

Prior to the start of the test, the rigorous preparation was
This is because it is generally necessary to determine whether or not the anti-algae / mold agent is an elution type and can maintain its effect for a long period of time.

Anti-algae effect test (i) Test bacterium: Chlorella, holmium, anabaena mixed solution 5 ml (ii) Cultivation: 25 ° C ± 2 ° C in a sunlight incubator
Days

Antifungal Effect Test Mold Resistance Test Method (J
(I) IS Z2911) (i) Test bacteria: Group 4 Cladosporium, aureopacidium, gliocladium mixed solution (ii) Cultivation: 28 ° C ± 2 ° C in a constant temperature incubator for 7 days

Exposure test Factory exposure field March 1-August 31 6 months (south surface 45 ° C)

Test Results (A) Adhesive Force Measurement Results (Multilayer Finish Coating Material JIS A6
910) (i) The product of the present invention and the addition of each fungicide / algae-proofing material have no influence on the adhesion of the coating film. (Ii) The measurement results vary widely.

(B) Accelerated weather resistance measurement results (i) A tendency of the coating film to yellow by the additive is observed (ii) Yellowing tendency is marinsite >> preventol >>
Biocut> The present invention

(C) Results of exposure test (i) Regarding the product of the present invention, generation of algae and molds is not recognized regardless of presence / absence of pre-test severe test. (Ii) blank of control product and pre-test severe test Generation of algae and molds was observed in the test pieces that were carried out. (Iii) Pre-test of the control product For the test pieces that were not subjected to the severe test, the generation of algae and molds was not remarkable. (Iv) Control product ( (Adding antifungal and antialgal agents) has a tendency to leave tack in the coating film and reduce stain resistance (V) Although the stain resistance reduction tendency is not recognized in the product of the present invention, marine side> preventol ≧ biocut Big in order

(D) Antifungal and antialgal effect persistence determination results (i) The antifungal and antialgal effects are greater in the order of the product of the present invention >> Marine side >>Biocut> Preventol (ii) Slate Materials with strong alkali, such as plates, produce less microorganisms. However, the generation of microorganisms is observed when alkaline components are eluted by immersing in fresh water, etc. (iii) The effect on microorganisms is significantly reduced in commercially available products by immersing in clean water and warm water. Cut >> Larger in order of marine side (v) Immersion in fresh water or warm water does not hinder the product of the present invention in terms of any effect

Example 2 A test was conducted as to whether or not there was a difference in the effect of the product of the present invention depending on the base resin of the paint.

Acrylic rubber emulsion resin (high-gloss single-layer elastic finish material), reaction-curable epoxy emulsion resin (multi-layer finish material: main material for ball attachment), acrylic resin (elastic multi-layer top coating material), reaction curing Type urethane resin (high-elasticity topcoat paint) and curing reaction type urethane resin (hard multi-layered topcoat paint) and the like, the reaction product of the product of the present invention (3,6-dichloropyridazine and parachlorometaxylenol 1.0
Wt% and trialkyltin alkylbenzene sulfonate 4.0 wt%) were added. However, the urethane resin system also includes a partial addition of the product of the present invention (3.0% by weight of a reaction product of 3,6-dichloropyridazine and parachloromethaxylenol and 4.0% by weight of trialkyltin alkylbenzenesulfonate). Tested.

The test pieces were JIS mortar boards and slate boards, and the exposure site was the building wall surface (south surface) in the mountainous area of Kagoshima city.

All the test pieces were the products of the present invention (flavonoids,
A bactericidal / algicidal treatment was performed with a fragrance, a surfactant and a composition of sodium hypochlorite).

The paint applied to the test piece was based on the standard specifications, and the test was based on the multilayer finish coating material (JIS A6910).

A coating material based on an acrylic rubber emulsion resin (hereinafter referred to as "test material-A") was prepared by adjusting the base material with a dedicated sealer and using a sand-skeleton roller to prepare a 3% dilution (prepared with water) of 0.9 kg / m ² After application for 8 hours, a 6% dilution (diluted with water) was applied with a medium wool roller at a rate of 0.3 kg / m ² .

Since the coating material (test material-B) based on the reaction-curable epoxy emulsion resin is a two-pack type, it is sufficiently stirred at a mixing ratio of coating liquid: curing agent = 93: 7, and an aging time is 30 minutes. Within 1.5 hours after mixing the two liquids, a 10% diluted product (diluted with water) was used with a tile gun (nozzle diameter 6 to 8 mm, air pressure 4 to 7 kg / cm ² ) to obtain 0.8 kg / m ² (membrane pressure: 0. 5m
m) was applied. Drying time is 16 hours. Acrylic resin-based paint (Sample C) is airless spray (primary pressure 4-5kg / cm ² , secondary pressure 120-150kg /
cm ² , chip number. 163-615) 0.35 kg / m ²
It was applied at a ratio of (membrane pressure 40 μ). After 60 minutes, it was coated with a roller at a rate of 0.35 kg / m ² (membrane pressure 40 μm), and the drying time was 8 hours.

Coating material based on reaction-curable urethane resin (test material-D ₁ , D ₂ : D ₁ ... antibacterial agent 1.0% + antifouling / antistatic agent 4.0%, D ₂ ... antibacterial agent 3.0% + antifouling
The antistatic agent (4.0%) is a two-pack type, so it should be sufficiently stirred at a mixing ratio of coating liquid: hardening agent = 9: 1, and a 30% diluted product (diluted with dedicated thinner) should be airless sprayed (sample material). 0.21 kg / m ² (same as coating condition of -C) (film thickness 30-40μ)
m) It was applied.

After 30 minutes, 0.14 kg / m ² (film thickness 30 to 40 μm) of 30% diluted product was applied by brush coating. The drying time was within 3 hours.

A coating material based on a curing reaction type urethane resin (test materials-E ₁ and E ₂ : the same as D ₁ and D ₂ above) was 2
Since it is a liquid type, it was mixed at a mixing ratio of coating liquid: hardening agent = 8: 1, sufficiently stirred and used after 30 minutes of aging time.

Dilution rate 35% (prepared with dedicated thinner)
Airless spray (primary pressure 4 to 5 kg / cm ² , secondary pressure 120 to 150 kg / cm ² , chip No. 163 to 16)
5) was applied at a rate of 0.35 kg / m ² (dry film thickness 40 μm). After 60 minutes, the same amount was applied with a roller, and the drying time was 8 hours.

Exposure period April 25, 1989 to April 24, 1994: 5 years

Exposure test results (i) In the control product (blank), adhesion of mold and algae was observed after 5 months, and after 18 months, the algae overgrown the entire surface and slightly decreased in winter. The surface was invisible.

(Ii) In the test materials D ₁ and E ₁ ,
After 30 months, mold and algae adhered, and after 60 months, mold and algae adhered to an area of about 35% of the test piece.

(Iii) The results obtained by collecting and analyzing the deposits adhering to the control product and the test materials D ₁ and E ₁ with a brush or the like are shown in Table 1.
Shown in

As can be seen from Table 1, the deposits of the control product consisted of microorganisms and sediment components, and the test materials D ₁ and E
Microorganisms were the main components of the deposits in ₁ . The sediment component is considered to be the ash of Sakurajima.

[0137]

[Table 1]

(Iv) _On the coating films of the test materials A, B, C, D ₂ and E ₂ , there was no evidence of the growth of microorganisms, and the volcanic ash from Sakurajima was not attached.

Coating film performance test results (i) Water resistance (JIS A6909) No abnormality in any test piece (ii) Alkali resistance (JIS A6909) No abnormality (iii) Cleaning resistance (JIS A6909) 1
000 times no abnormality (iv) Water permeability (JIS A6910) 0.2-0.
25 ml (standard value 0.5 ml or less) (v) Accelerated weather resistance (JIS A6910) 1.00
No abnormality for 0 hours (No abnormality for standard value for 250 hours) (vi) Adhesive strength (JIS A6910) Standard condition 11-14kgf / cm ² (Specific value 7kgf / cm ²
Above) After flooding 7-9kgf / cm ² (Specification value 5kgf / cm ² or more) After repeated hot and cold 6.5-7.8kgf / cm ² (Specification value 5kgf /
cm ² or more)

Note that the ignition loss in Table 1 will be additionally described.

For scale analysis, a sample was blown off adhering water at 105 ° C., weighed, heated to 750 ° C., and gasified during that period is called ignition loss. Therefore, the loss on ignition includes the decomposition of organic substances and the coal-water gas produced as calcium oxide of calcium carbonate. The setting of 750 ° C. is a state (constant amount) where the weight does not change even if the temperature is raised. By the way, the soil analysis ends at 600-650 ° C. A constant weight is a substance that does not undergo thermal decomposition, that is, a stable inorganic state.

(Example 3) 12th year after construction with a north-northwest face in the vicinity of the exposure field in Example 2 (repainting, no washing,
We borrowed a warehouse (corrugated slate wall) (with microorganisms and dirt) on condition that it was repainted after the test.

[0143] (or less A surface) wall and control plot, washing ku by airless play (pressure 40 kgf / cm ^2; and thereafter B surface), treated area of the present invention product microorganism (water curing - chemical spray -
Washing: hereinafter referred to as C-side), microbial treatment and pollutant treatment combined use zone of the present invention (water curing-dispersion of microbial treatment agent-water-washing-dispersion of pollutants / contamination phenomena-washing: hereinafter referred to as D-side) It was divided into.

The paint was a paint based on an acrylic rubber emulsion resin, and the product of the present invention (1.0% by weight of the reaction product of 3.6-dichloropyridazine and parachlorometaxylenol and trialkyltin alkylbenzenesulfonate 4. 0% by weight: hereinafter referred to as drug G) and a commercially available fungicide / algae inhibitor (Biocut AG, 1.2% by weight: hereinafter referred to as drug F) were added. In addition, no treatment (no chemical addition,
Hereinafter referred to as drug E).

The test sections were each 1 m wide, and the A side (width 3
m) and B-plane (same), C-plane (same), and D-plane (same) with a distance of 1 m to eliminate interaction.

That is, on the surface A of the untreated section, a section containing no microbial treatment material (Chemical agent E), a section containing a microbial treatment agent (Chemical agent F), and a section containing an antibacterial agent and an antifouling antistatic agent ( Drug G) can be tested in a width of 1 m. B side, C side, D
The same applies to the surface. Since the drug F exhibits a halo phenomenon, a portion in contact with the drug F is affected.

Exposure test period: May 7, 1989 to 1994
May 6, 5 years

Exposure Test Results (i) In the A-side drug E section, the adhesive force of mold and algae was observed after 3 months, and reproduction was observed on the entire surface after 1 year.

(Ii) The results on the B-side drug E group were similar to those on the A-side drug E group.

(Iii) In the surface C drug E section and the surface D drug E section, adhesion of mold and algae was observed after 3 months, and 1
About two-thirds a year later, about four-fifths after 18 months, two
After 6 pieces were attached, mold and algae were found to adhere to the entire surface.

(Iv) In the A-side drug F section and the B-side drug F section, adhesion of mold and algae was observed after 8 months.
About one half after a month, about two thirds after 28 months, 3
After 6 months, about 4/5 was observed, and after 42 months, microbial growth was observed on the entire surface.

(V) In the C-side drug F section and the D-side F section, adhesion of mold and algae was observed after 8 months, about 1/3 after 24 months, about 2/3 after 36 months, 42 months It was about 4/5 later and the whole surface was covered with microorganisms 48 months later.

(Vi) In the A-side drug G group and the B-side drug G group, what appeared to be volcanic ash adhered at 36 months. Some adhesion of dust was observed after 48 months. No adhesion of microorganisms was observed even after 60 months, and the amount of dust was very small.

(Vii) Adhesion of dust was observed after 40 months in C-side drug G group and D-side drug G group. 48
The situation after a month did not change, and the adhesion of dust was slight after 60 months.

(Viii) After the test was completed, the coating film was peeled off and confirmed. As a result, evidence of mold growth was found on the back surfaces of both the E and F sections of the chemicals A and B. It was slightly observed that microorganisms were present at the time of forming the coating film on the back surface of the drug G section on both sides of A and B.

(Ix) Completely microbial treatment as the undercoating causes less damage and acceleration of deterioration of the coating film, and complete removal of dirt such as earth and sand results in good adhesion of the coating film and no peeling.

(X) After the completion of the test, when the deposits on the surface of the coating film were analyzed, microorganisms and dust were found.

[0158]

As described in detail above, according to the present invention,
It is possible to provide a coating method capable of obtaining a coating film which is harmless to humans and animals, can be economically applied in a short period of time, and has excellent weather resistance, dust resistance, antistatic properties, and a long-lasting appearance.

Claims (4)

[Claims] 1. A pre-painting treatment step comprising microbial treatment, contaminant treatment and contamination development treatment, and a main painting treatment step of applying a paint containing an antibacterial agent and a dustproof / antistatic agent. How to paint. 2. The coating method according to claim 1, wherein the agent used for the treatment of the microorganism is an inorganic chlorine compound containing flavonoids, an aromatic substance and a surfactant. 3. The coating method according to claim 1, wherein the chemical agent used for the treatment of pollutants and the treatment of a pollution phenomenon is a cleaning agent containing components derived from plant contents and constituents. 4. The coating composition according to claim 1, wherein a reaction product of 3,6-dichloropyridazine and parachlorometaxylenol is used as an antibacterial agent, and an alkylbenzenesulfonic acid trialkyltin salt is used as a dustproof / antistatic agent. How to paint.