JP4647033B1 - Long-term alkaline stable coating, and method for preventing epidemics of buildings that rear animals using long-term alkaline stable coating - Google Patents

Abstract

The present invention provides a coating that can maintain high alkalinity for a long period of time without scattering by rain, wind, or drying.
SOLUTION: The long-term alkaline stable coating 11 includes 25 to 67 parts by weight of non-alkali thickening resin 12 and 30 to 72 parts by weight of slaked lime particles 13 with respect to 100 parts by weight as a whole, and covers the surface of a substrate 21. It is an alkaline coating that has cracks 15 that communicate with the slaked lime particles 13. Due to the adhesion of moisture 17, the long-term alkaline stable coating 11 exhibits a pH of 11.0 or more on the surface.
[Selection] Figure 1

Description

  The present invention relates to a coating that stably exhibits alkalinity over a long period of time.

  In the livestock industry, particularly in the field of raising poultry such as chickens, highly pathogenic avian influenza (HPAI) has been devastating, causing serious and tremendous damage. Avian influenza is designated as a reported infectious disease under the Livestock Infectious Diseases Prevention Law, and appropriate measures must be taken. Moreover, since influenza also infects pigs, it is necessary to effectively prevent influenza viruses from entering livestock and bird houses.

To prevent entry of pathogenic viruses as a way to protect livestock and poultry from damage such influenza, measures to spray slaked lime in the chicken house or pig are generally performed. Such measures are based on the administrative guidance of local livestock health centers and are effective in the prevention and disinfection of avian influenza viruses. Specifically, a paste is prepared by mixing slaked lime powder with warm water, and this paste is placed on the roof, wall, floor, etc. of a poultry house. Alternatively, powdered slaked lime is sprayed directly on the roof, walls, floors, etc. of poultry houses. Or spray around the outside of the poultry house. Slaked lime exhibits strong alkalinity by dissolving in water and inactivates avian influenza virus. An example of a disinfection method for spraying slaked lime is stipulated in Schedule 23-Disinfection standards (Non-patent Document 1) of the Enforcement Regulations of the Livestock Infectious Diseases Prevention Law.

Appendix 2 of the Enforcement Regulations for the Prevention of Livestock Infectious Diseases Law 3-Disinfection Criteria

  However, the above-described conventional measures cause problems as described below. First, there is a problem that the antiviral effect does not last long. In other words, slaked lime is scattered by rain, wind, and dryness and cannot maintain its antiviral effect. For this reason, slaked lime had to be sprayed periodically and, in extreme cases, had to be sprayed once a week.

Second, there is a problem of consuming a large amount of slaked lime. In other words, since slaked lime powder is sprayed manually using a scoop or a bowl, a large amount of slaked lime is consumed in large poultry houses or pig houses. Generally, 20 kg of slaked lime is used per 40 m ² (0.5 kg / m ² ), spread 1 m wide around the poultry house entrance, passage, hallway, and the surrounding area and spread evenly with straw. However, the amount of slaked lime that dissolves in water is small, and most of the slaked lime sprayed does not exhibit strong alkalinity and dissipates and flows out from the poultry house or pig house as a solid component. For this reason, slaked lime was consumed wastefully. Therefore, in the conventional quarantine / disinfection measures, not only a large amount of slaked lime is consumed, but also the man-hours and labor costs related to spraying are enormous. In addition, a protective mask, goggles, and rubber gloves must be worn to prevent slaked lime from adhering to the operator's skin and mouth.

  An object of this invention is to provide the coating film which can maintain high alkalinity for a long period, without scattering by rain, a wind, and drying in view of the above-mentioned situation.

For this purpose, the long-term alkaline stable coating according to the present invention is an alkaline coating for coating the surface of a substrate, and as a raw material, the resin solid content is 45% with respect to 100 parts by weight as a raw material. A width containing 37 to 62 parts by weight of a non-alkali thickening type acrylic resin emulsion that does not thicken even if contacted and thickens, and 35 to 60 parts by weight of slaked lime is dried and solidified. It has a seepage passage of 01 μm to 100 μm, and expresses pH 12.0 or more on the surface of the coating.

According to the present invention, since slaked lime is included, water adheres to the film during rain or watering, and thus strong alkalinity having a pH of 12.0 or more is expressed on the surface of the film. Therefore, pathogenic viruses such as avian influenza virus and swine influenza virus adhering to the surface of the coating can be inactivated and an antiviral effect can be obtained.

Moreover, since the coating of the present invention has a ooze passage having a width of 0.01 μm to 100 μm that communicates with slaked lime, the slaked lime gradually oozes out to the surface of the coating through the ooze passage. Furthermore, the coating film of the present invention has excellent weather resistance, and slaked lime does not peel off from the coating film even when exposed to strong winds and rain. Thus, it exhibits an antiviral effect over a long period of time. The slaked lime may be fine particles or secondary particles in which the fine particles are aggregated.

Liquid resins generally have the property of aggregating and solidifying and increasing the viscosity when contacted with strong alkali. For this reason, when mixed with slaked lime powder, there is a problem that it becomes a dumpling and loses fluidity and cannot be coated. On the other hand, the resin for forming the film of the present invention is a non-alkali thickening type acrylic resin. Thereby, even if it adds and stirs slaked lime particle | grains, it does not thicken and can coat | cover the surface of a base material suitably.

The present invention is not limited to one embodiment, and in addition to non-alkali thickening type acrylic resin and slaked lime particles, some additives such as iron oxide, silver oxide, copper oxide, and colored pigments such as blue and yellow are added. May be included. As one embodiment, 1 to 8 parts by weight of titanium oxide may be further included. According to this embodiment, the contact angle of water droplets adhering to the coating can be lowered, and the coating can be easily wetted with water. Further, since titanium oxide is also used as a white color pigment, the coating can be made white, and sunlight reflection, light shielding and heat shielding effects can be obtained. Furthermore, the effect of preventing dirt can be obtained.

  In order to obtain the effect of improving the coatability of the coating surface and the effect of sunlight reflection, light shielding and heat shielding, the titanium oxide content is preferably 1 part by weight or more. Further, if 8 parts by weight of titanium oxide is contained, the wettability improving effect and the like can be sufficiently obtained, and when the content of titanium oxide exceeds 8 parts by weight, the wettability improving effect is almost saturated. . For this reason, the content of titanium oxide is 1 to 8 parts by weight.

  The non-alkali thickening resin may be a urethane resin, a fluororesin, a silicon resin, or a polyester resin. Preferably, the non-alkali thickening resin is an acrylic resin. According to this embodiment, it is advantageous in terms of cost compared with other resins. Furthermore, the acrylic resin has good weather resistance and good compatibility with slaked lime. It should be understood that the acrylic resin includes an acrylic ester or mainly an acrylic ester and a small amount of other urethane resin, silicon resin, and / or ethylene vinyl acetate resin (EVA).

In addition, the method for preventing epidemics of buildings for breeding animals using the long-term alkaline stable coating according to the present invention has a resin solid content of 45% as a raw material and does not thicken by aggregation and solidification even when contacted with strong alkali. Non-alkali thickening type acrylic resin emulsion 37-62 parts by weight and powdered slaked lime 35-60 parts by weight, these materials are mixed and stirred to prepare a mixture slurry of 100 parts by weight, the entire periphery of the building for rearing animals, or paved peripheral region surrounding the building animal husbandry, was applied to the fence or structure, and drying and curing the coated region, slaked lime and communicating Forming a long-term alkaline stable coating having a leaching path of 0.01 μm to 100 μm in width, and moisture adhering to the surface of the long-term alkaline stable coating permeates the leaching path to dissolve slaked lime, A pH of 12.0 or higher is expressed on the surface of the membrane to inactivate pathogenic viruses on the surface of the long-term alkaline stable coating.

According to the epidemic prevention method of the present invention , since the slurry coated in the coating region forms a film having excellent weather resistance by drying and curing, the slaked lime in the film is not scattered by wind and rain.

  And since a seepage passage having a width of 0.01 μm to 100 μm is formed during curing, slaked lime in the coating can exude over a long period of time.

And wanted by coating can sustain a high alkaline stable, long-term, it is possible to maintain the antiviral effect long term stable. In preparing the slurry, additives such as a dispersant and an antifoaming agent may be added in addition to the liquid non-alkali thickening resin and powdered slaked lime. Some additives such as iron oxide, silver oxide, copper oxide, and colored pigments such as blue and yellow may be added.

As a preferred embodiment, the slurry over further containing titanium oxide 1-8 parts by weight. According to this embodiment, the contact angle of the water droplets adhering to the coating can be lowered, and the effect of making the coating easy to wet can be imparted. Further, since titanium oxide is also used as a white color pigment, the coating can be made white, and sunlight reflection, light shielding and heat shielding effects can be imparted. Furthermore, the effect of preventing dirt can be imparted.

Bird flu viruses invade the birdhouse or barn when wild birds flying from the outdoors stop on the roofing materials, beam materials, gutters, etc. of the birdhouse or barn. In addition, when a small animal such as a wild boar runs around the outer wall material or flooring material and makes feces, pathogenic viruses enter the birdhouse or barn. Therefore, the plant epidemic prevention method of a building for rearing animals with long alkaline stabilizing coatings according to the invention, buildings for breeding animals can enjoy the epidemic prevention and disinfection effect of pathogenic viruses.

  In a preferred embodiment, the slurry further comprises 1-8 parts by weight of titanium oxide. According to this embodiment, a further effect can be imparted to the coating film which is obtained by drying and curing the slurry. 1stly, the contact angle of the water droplet adhering to a film can be made low, and the effect which makes a film easy to get wet with water can be provided. Secondly, since titanium oxide is also used as a white coloring pigment, the coating can be made white, and sunlight reflection, light shielding and heat shielding effects can be imparted. Furthermore, the effect of preventing dirt can be imparted.

  The non-alkali thickening resin may be a urethane resin, a fluororesin, a silicon resin, or a polyester resin. Preferably, the non-alkali thickening resin is an acrylic resin. According to this embodiment, it is advantageous in terms of cost compared with other resins. Furthermore, the acrylic resin has good weather resistance and good compatibility with slaked lime.

  It should be understood that the acrylic resin includes an acrylic ester or mainly an acrylic ester and a small amount of other urethane resin, silicon resin, and / or ethylene vinyl acetate resin (EVA).

As described above, since the long-term alkaline stable coating of the present invention has a seepage passage having a width of 0.01 μm to 100 μm, the slaked lime in the coating gradually exudes and dissolves and stably exhibits high alkalinity over a long period of time. To do. Therefore, it exhibits antiviral properties stably over a long period of time. Moreover, the long-term alkaline stable coating of the present invention is excellent in weather resistance. Epidemic prevention method of the present invention is obtained by suitably prevented from entering the pathogenic virus buildings for breeding animals are stably exhibited over a long period of time epidemic prevention and disinfection effect in buildings for rearing animals .

It is sectional drawing which shows typically the long-term alkaline stable film which becomes one Example of this invention. It is sectional drawing which shows typically a comparative film. It is sectional drawing which shows typically a comparative film.

  Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings.

  FIG. 1 is a cross-sectional view schematically showing a long-term alkaline stable coating according to an embodiment of the present invention. The long-term alkaline stable coating 11 is a coating that covers the surface of the substrate 21. The long-term alkaline stable coating 11 contains 25 to 67 parts by weight of the non-alkali thickening resin 12 and 30 to 72 parts by weight of slaked lime particles 13 with respect to 100 parts by weight as a whole. Slaked lime particles 13 are secondary particles in which fine particles 14 are aggregated. And the magnitude | size of the slaked lime particle | grains 13 is 5-100 micrometers, and mainly 10-50 micrometers.

The non-alkali thickening resin 12 is an acrylic resin. Acrylic resin of the present embodiment is a moisture-permeable resin composed mainly of A acrylic acid ester. Alternatively, it may mainly contain an acrylate ester and a small amount of urethane resin and / or silicon resin.

  The long-term alkaline stable coating 11 has cracks 15 that cannot be easily identified with the naked eye. The crack 15 connects the slaked lime particles 13 to each other and reaches the surface of the long-term alkaline stable coating 11. The crack 15 serves as a seepage passage as will be described later. The width of the crack 15 is considered to be 0.01 μm to 100 μm, mainly 1 μm to 10 μm.

  The long-term alkaline stable coating 11 further includes 1 to 8 parts by weight of fine titanium oxide particles 16. By including the titanium oxide particles 16, the long-term alkaline stable coating 11 becomes white and the concealability is improved. Therefore, the base material 21 is concealed by the long-term alkaline stable coating 11. As a result, by covering the roofing material with the long-term alkaline stable coating 11, it is possible to obtain a light-shielding / heat-shielding effect of sunlight.

  Further, the inclusion of the titanium oxide particles 16 improves the wettability of the long-term alkaline stable coating 11. As a result, the contact angle of the water droplet is lowered, and the moisture 17 is thinly and widely adhered to the surface of the long-term alkaline stable coating 11. Rainwater or water generated by condensation penetrates the cracks 15 and dissolves the slaked lime particles 13.

  When the moisture 17 adheres to the surface of the long-term alkaline stable coating 11, the moisture reaches the slaked lime particles 13 through the cracks 15, and the moisture 17 exhibits a strong alkalinity of pH 12 or higher. Strong alkalinity remains stable for several months.

  The moisture-permeable resin blocks liquid water and allows water vapor to pass. Since the non-alkali thickening resin 12 has a crack 15 and is itself a moisture-permeable resin, the long-term alkaline stable coating 11 is wetted and the slaked lime particles 13 take in external water vapor. As a result, the slaked lime particles 13 dissolve without delay in a humid environment. Thus, a synergistic effect can be obtained in which the alkali component easily passes through the crack 15 and exudes to the surface of the long-term alkaline stable coating 11. Therefore, even if the moisture 17 is a slight amount such as condensed water, the long-term alkaline stable coating 11 can exhibit strong alkalinity of pH 12 or higher. And when the water | moisture content 17 is rain water or spray water, of course, the long-term alkaline stable coating 11 expresses strong alkalinity more than pH12.

  FIG. 2 is a cross-sectional view schematically showing a comparative coating containing less than 30 parts by weight of slaked lime particles. In the comparative coating 101, the slaked lime particles 13 are few. For this reason, compared with the Example of FIG. 1 containing 30-72 weight part of slaked lime particle | grains 13, there is little development of the crack 15, the width | variety of the crack 15 is small, and there is little ooze of slaked lime. Therefore, it is difficult for the water 17 to express strong alkalinity, and there is a possibility that the desired antiviral property cannot be sufficiently exhibited.

  In contrast, the coating 101 contains less than 1 part by weight of titanium oxide, so that the contact angle of the moisture 17 is increased, the water droplets are increased, and spread on the surface of the coating 101 and do not adhere. For this reason, there exists a possibility that desired antiviral property may not fully be exhibited.

  FIG. 3 is a cross-sectional view schematically showing a comparative coating containing 72 parts by weight of slaked lime particles. In the proportional coating 201, there are many slaked lime particles 13. For this reason, as compared with the embodiment of FIG. 1 containing 30 to 72 parts by weight of slaked lime particles 13, a large number of cracks 15 develop, the width of cracks 15 is large, and slaked lime oozes out excessively. Therefore, it is insufficient in terms of weather resistance and wear resistance. Furthermore, since the slaked lime particles 13 are completely dissolved in a short period of time, strong alkalinity cannot be stably exhibited over a long period of time.

  Next, a method for using the long-term alkaline stable coating 11 of this embodiment will be described.

  The base material 21 is a roof material of a bird house, in particular a poultry house, for example, a slate material such as a corrugated slate. Or it is a slate material used for the roofing material of a livestock barn, especially a pig barn. By covering the upper surface of the slate material with the long-term alkaline stable coating 11, even if a wild bird stops on the upper surface of the slate material and dung, the avian influenza virus contained in the dung is inactivated. As a result, it is possible to prevent or disinfect the poultry house or pig house. Further, for example, even if the roofing material of the birdhouse or piggery is a galvanized steel plate or a polycarbonate plate, the inside of the birdhouse or piggery can be prevented or disinfected by covering the upper surface of the roofing material with the long-term alkaline stable coating 11 it can.

  Preferably, the base material 21 is an upper surface of a beam material that supports the slate material. Since the slate material is corrugated and a gap is formed between the lower surface of the slate material and the upper surface of the beam material, there is a possibility that the avian influenza virus may enter the poultry house through the gap. By covering the upper surface of the beam material with the long-term alkaline stable coating 11, even if a wild bird stops on the upper surface of the beam material and dung, the avian influenza virus contained in the dung is inactivated. As a result, it is possible to prevent or disinfect the poultry house or pig house. In addition, since the wild boar runs on the surfaces of the beam member and the column member, preferably, the base material 21 is a roof member, a beam member, or a column member of a livestock or a bird house.

  Preferably, the base material 21 is an upper surface of a rain gutter provided on the outer peripheral edge of the slate material. Since wild birds tend to stop in the rain gutter, there is a risk that the bird flu virus may enter the poultry house mixed with rain water from the gutter. By covering the upper surface of the gutter with the long-term alkaline stable coating 11, even if the wild bird stops on the upper surface of the gutter and dung, the avian influenza virus contained in the dung is inactivated. As a result, it is possible to prevent or disinfect the poultry house or pig house. Moreover, since the wild boar runs on the surface of the gutter, the base material 21 is preferably a gutter of a livestock barn or a birdhouse.

  For the same reason, the outer wall material or flooring material may be covered with the long-term alkaline stable coating 11. Moreover, since the wild boar runs on the surface of the wall material and the floor material, the base material 21 is preferably a wall material or a floor material of a barn or a bird house. The flooring includes a member that forms the surface of the outer peripheral passage of the barn or the birdhouse. This inactivates the influenza virus contained in the feces even if the wild bird or wild boar dung. As a result, it is possible to prevent or disinfect the poultry house or pig house.

  Preferably, the substrate 21 is a paved peripheral area, fence, or structure surrounding the barn or birdhouse. By covering the entire circumference of the buildings where livestock, poultry and other animals are bred and the paved road surface of the surrounding roads with the long-term alkaline stable coating 11, rainwater and condensed water enter the cracks 15 and slaked lime particles 13 is dissolved. And the slaked lime aqueous solution which is strongly alkaline exudes from the crack 15 to the exterior over a long period of time. This action disinfects the surrounding environment of the building. The base material 21 may be a concrete material, a mortar material, a resin material, or an asphalt material.

  Slaked lime is inexpensive and advantageous in terms of cost. The slaked lime eventually becomes non-toxic calcium carbonate. And since the long-term alkaline stable coating 11 expresses strong alkalinity, it also exhibits bactericidal power against pathogenic bacteria. In addition, antifungal effect can be expected, especially on the outer wall to prevent the growth of black mold.

  Next, another method of using the long-term alkaline stable coating 11 of this embodiment will be described.

  Since the long-term alkaline stable coating 11 of the present embodiment exhibits strong alkalinity for a long time, it can prevent the drainage of the river or the drainage facility from flowing out while being acidic. In this case, the base material 21 is a river bank, a river revetment, a road surface along a river, a drainage channel, or a drainage tank. As a result, river water or drainage can be neutralized. Therefore, it is effective for environmental conservation, regenerates and maintains the ecosystem, and prevents abnormal occurrences of sea lions and algae.

  The slaked lime aqueous solution that oozes out from the crack 15 to the outside for a long time on the road surface of the river bank, river revetment, and road along the river is poured into the sea and enriched with minerals containing calcium near the river mouth. This prevents red tide near the estuary and promotes the growth of marine products.

  Next, a method for producing the long-term alkaline stable coating 11 of this example will be described.

  First, 25 to 67 parts by weight of an acrylic resin which is a liquid non-alkali thickening resin, 30 to 72 parts by weight of powdered slaked lime which is particles of 50 μm or less, and powdery oxidation which is particles of 10 μm or less 1-8 parts by weight of titanium is prepared, and these are mixed and stirred to prepare a slurry of 100 parts by weight as a whole. The slaked lime secondary particles shown in FIG. 1 are dispersed in the slurry.

  Next, this slurry is applied to the surface of the construction object and left to stand until the slurry is cured. During curing, the cracks 15 described above with reference to FIG. 1 are considered to extend from the slaked lime secondary particles 13 and be formed in the resin 12. The generation cause of the crack 15 is considered to be a difference in shrinkage rate between the resin 12 and the slaked lime particles 13. Alternatively, it is considered to be due to a chemical reaction between the resin 12 and the slaked lime particles 13. The crack 15 is not easily identified with the naked eye, and the width of the crack 15 is considered to be 0.01 μm to 100 μm.

  In other words, since the resin is generally an alkali-thickening type resin, when the slaked lime powder is mixed, the resin loses fluidity and becomes a dumpling, which cannot be applied to the surface of the substrate. However, in this embodiment, since non-alkali thickening resin is used, suitable fluidity is exhibited and workability is excellent. Coating is performed with a brush, a roller or a spray. The long-term alkaline stable coating 11 produced by such a method has excellent weather resistance and wear resistance, and does not peel off even when exposed to wind and rain.

  When the strong alkalinity of the long-term alkaline stable coating 11 decreases after several months from the coating, the surface of the old long-term alkaline stable coating 11 may be coated with the new long-term alkaline stable coating 11. Thereby, the surface of the base material 21 can be protected thickly. Moreover, when the long-term alkaline stable coating 11 is repeatedly applied to the surface of the slate material, the durability of the slate material is improved. Furthermore, it can be expected to repair the deteriorated slate material, and is effective in repairing and preventing rain leaks. The effect of such overcoating can be further enhanced by repeating.

  The effect confirmation test of the long-term alkaline stable coating film of this example was conducted. First, as shown in Table 1, on the surface of the corrugated slate, 15 types of coatings having different contents of the non-alkali thickening resin and slaked lime were prepared, and whether or not the alkalinity was stably expressed over a long period of time was tested. .

As a resin, an acrylic ester copolymer aqueous emulsion that does not aggregate even when mixed with a strong alkali powder such as slaked lime and is compatible as an aqueous solution (K-6200HN resin solids content 45 manufactured by Shin-Nakamura Chemical Co., Ltd.) % ) Was used. Slaked lime powder for fertilizer was used as slaked lime. Anatase type titanium was used as the titanium oxide. The slurry prepared by mixing and stirring these particles had a low viscosity in which slaked lime particles and titanium oxide particles were dispersed in a liquid acrylate ester and could be applied by spraying.

  The slurry of each specimen is applied twice on the surface of the corrugated slate, dried and cured at room temperature for 1 day, and then immersed in tap water at 20 ° C. And it took out from tap water every day and measured by sticking pH paper. The test specimens having a pH of 12.0 or more from the first day to the 20th day were evaluated as ◯, and the test specimens having a measurement day of pH 11.0 or more from the first day to the 20th day were evaluated as △. Evaluation was made, and a test specimen having a measurement day with a pH of less than 11.0 or having a problem was evaluated as x.

  Comparative Example 1 and Comparative Example 2 were evaluated as x. In the initial stage, pH 12.0 or higher was expressed, but slaked lime was completely eluted without waiting for the 20th day. In other words, slaked lime could not be retained. Moreover, peeling of the coating occurred.

  Although Example 1 and Example 2 are evaluation (triangle | delta), the oozing-out period is longer than Comparative Examples 1 and 2, and it can be used as a film. Moreover, peeling of the coating occurred.

  Examples 3 to 9 of the evaluation ◯ maintain a strong alkalinity of p12.0 or more stably over a long period of time, and are appropriate as coatings.

  Although Example 10 and Example 11 are evaluation (triangle | delta), pH11.0 or more is expressed and it can be used for a long term as a film.

  Comparative Example 3 and Comparative Example 4 were evaluated as x, and slaked lime exudation was small.

The abrasion resistance test of the long-term alkaline stable coating of this example was conducted. A slurry is prepared by mixing and stirring 65 parts by weight of a liquid non-alkali thickening resin, 30 parts by weight of slaked lime powder, and 5 parts by weight of titanium oxide powder. The slurry is applied to the surface of the corrugated plate slate at a coating amount of 150 g / m ^2. It was coated, dried and cured, and coated with a long-term alkaline stable coating. When such a long-term alkaline stable coating was rubbed 100 times with a metal scrubber, the long-term alkaline stable coating remained on the surface of the corrugated sheet slate. It was found that the long-term alkaline stable coating of this example had excellent wear resistance.

  In Examples 1 to 11, the mixture slurry was prepared using the powder of slaked lime for fertilizer, but the slaked lime in the slurry is not limited to this and may be a powder of industrial slaked lime. Moreover, in Examples 1-11, the mixture slurry was prepared using the anatase type titanium oxide, However, The titanium oxide in a slurry is not restricted to this, A rutile type titanium may be sufficient.

  The long-term alkaline stable coating according to the present invention is advantageously used in livestock houses, bird houses, farms, rivers, and drainage facilities.

  11, long-term alkaline stable coating, 12 non-alkali thickening resin, 13 slaked lime particles, 14 fine particles of slaked lime, 15 cracks (seepage passage), 16 titanium oxide particles, 17 moisture, 21 base material.

Claims (4)

An alkaline coating covering the surface of the substrate,
As a raw material, 37 to 62 parts by weight of a non-alkali thickening type acrylic resin emulsion that has a resin solid content of 45% and does not thicken even when contacted with a strong alkali and does not thicken, with respect to 100 parts by weight as a whole. The mixture containing 35 to 60 parts by weight of slaked lime is dried and solidified.
A squeezing passage having a width of 0.01 μm to 100 μm communicating with the slaked lime,
A long-term alkaline stable coating that exhibits a pH of 12.0 or higher on the surface of the coating.   The long-term alkaline stable coating according to claim 1, further comprising 1 to 8 parts by weight of titanium oxide. As raw materials, 37 to 62 parts by weight of a non-alkali thickening acrylic resin emulsion that has a resin solid content of 45% and does not coagulate and solidify even when contacted with strong alkali, and powdered slaked lime 35 To 60 parts by weight, and mixing and stirring these raw materials to prepare a mixture slurry of 100 parts by weight as a whole,
The slurry was applied to the entire circumference, or paved peripheral region surrounding the building animal husbandry, fence or structure, the building of breeding animals,
The coating region is dried and cured to form a long-term alkaline stable coating having a seepage passage having a width of 0.01 μm to 100 μm communicating with slaked lime,
Moisture adhering to the surface of the long-term alkaline stable coating permeates the seepage passage and dissolves slaked lime, and develops pH 12.0 or more on the surface of the long-term alkaline stable coating, thereby preventing pathogenic viruses on the surface of the long-term alkaline stable coating A quarantine method for buildings that raise animals using a long-term alkaline stable coating to be activated. The slurry further comprises an oxide of titanium 1-8 parts by weight, epidemic prevention method of building breeding animals with long alkaline stabilizing coating of claim 3.

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