An antimycotic aqueous coating, its preparation method and use in high humidity environments

Abstract

The application relates to the field of water-based paint, and more particularly to a mildew-resistant water-based paint, a preparation method thereof and application in a high-humidity environment. The mildew-resistant water-based paint is prepared from the following raw materials in parts by mass: a base resin emulsion, a modified resin emulsion, a dispersing agent, a defoaming agent, a mildew-proof agent, a film-forming aid, a high-molecular composition and deionized water. The mildew-resistant water-based paint prepared through the method can not only realize resistance to mildew and water-based environment, but also can greatly improve the aging resistance, air permeability and corrosion resistance and other performances on the basis, solve the contradiction of the existing water-based paint in the multi-performance direction, adapt to the application environment requirements of the existing water-based paint, meet the increasing comprehensive performance demand of consumers for the water-based paint, and has very wide application potential.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water-based coatings, and more particularly to an anti-mold water-based coating, a preparation method thereof and an application thereof in high-humidity environments. BACKGROUND

[0002] With the rapid development of the construction, home and industrial fields, the demand for functional coatings is increasing, especially in humid environments or high-humidity conditions, the waterproof performance and anti-mold performance of coatings become key indicators. Traditional solvent-based coatings have good waterproofness and durability, but they contain a large amount of volatile organic compounds (VOCs), which are harmful to the environment and human health. In this context, anti-mold waterproof water-based coatings have attracted widespread attention due to their excellent performance. This coating combines the dual characteristics of waterproofness and anti-mold, effectively resisting water penetration and mold growth, and is particularly suitable for building exterior walls, basements, bathrooms, kitchens and other places that are exposed to humid environments for a long time in high-humidity areas.

[0003] Anti-mold waterproof water-based coatings emerge as a new type of hybrid functional coating. This coating uses water as the solvent or dispersion medium, which is more environmentally friendly than traditional organic solvent-based coatings, which have lower volatile organic compound emissions. On the other hand, this type of coating can inhibit the growth of mold while effectively preventing water from penetrating the wall interior due to its excellent waterproof performance, improving the quality and service life of the coating. In addition, anti-mold waterproof water-based coatings should also have good air permeability to allow the release of gases inside the wall, further reducing the likelihood of mold growth.

[0004] However, despite the significant progress made in anti-mold waterproof water-based coatings, there are still some challenges in current technology, such as poor durability and aging resistance. Although the coating can provide effective protection in the short term, these components may gradually lose their effectiveness over time, or the coating may experience a significant decline in performance and peeling of the coating due to rapid aging. On the other hand, in actual applications, the coating often faces corrosive environments, which can greatly damage the coating and cause the anti-mold and waterproof properties to fail, greatly reducing the performance of the coating. SUMMARY

[0005] Therefore, in order to effectively solve the above-mentioned existing problems, the application provides an anti-mildew water-based paint and a preparation method thereof. The anti-mildew water-based paint prepared by the application not only has the resistance to mildew and water-based environment, but also greatly improves the aging resistance, air permeability, corrosion resistance and other properties of the paint on this basis, solves the contradictions of the existing water-based paint in multiple performance directions, thereby adapting to the application environment requirements of the existing water-based paint, meeting the increasing comprehensive performance requirements of consumers for water-based paint, and having very wide application potential.

[0006] The anti-mildew water-based paint comprises, by mass fraction, 20-35 parts of a base resin emulsion, 10-20 parts of a modified resin emulsion, 0.8-1.4 parts of a dispersing agent, 0.3-0.6 parts of an antifoaming agent, 1-2 parts of an antifungal agent, 2-4 parts of a film-forming aid, 0.5-1.5 parts of a wetting agent, 3-8 parts of a high molecular composition, 5-10 parts of a filler, and 35-55 parts of deionized water.

[0007] As a preferred embodiment, the mass ratio of the base resin emulsion, the modified resin emulsion and the high molecular composition is (24-32):(11-17):(4-7).

[0008] As a preferred embodiment, the mass ratio of the base resin emulsion, the modified resin emulsion and the high molecular composition is (26-30):(13-16):(5-6).

[0009] As a preferred embodiment, the base resin emulsion is an acrylic resin emulsion.

[0010] As a preferred embodiment, the solid content of the base resin emulsion is 45-50%.

[0011] As a preferred embodiment, the preparation method of the modified resin emulsion specifically comprises the following steps: S1: mixing and adding a base resin emulsion, α-methylstyrene, hexafluorobutyl acrylate and acetylacetoxyethyl acrylate into deionized water, adding sodium dodecyl sulfate for emulsification, stirring at a speed of 1500-2000 rpm for 30-40 min to obtain a pre-emulsion; S2: transferring the pre-emulsion to a reaction kettle, replacing air with nitrogen, heating to 75-80℃, dissolving ammonium persulfate in deionized water, and slowly adding it into the reaction kettle through a constant-pressure dropping funnel within 1-1.5 h, controlling the reaction temperature to be 70-75℃, and after the addition is completed, keeping the temperature at 75-80℃ for continuous reaction for 3-4 h; S3: after the reaction is completed, cooling to room temperature, slowly adding ammonia water to adjust the pH to 7.5-8, and then filtering through a 300-400 mesh filter screen to obtain the modified resin emulsion.

[0012] In a preferred embodiment, the mass ratio of the matrix resin emulsion, α-methylstyrene, hexafluorobutyl acrylate, and acetyl acetoxyethyl acrylate is (8~9.5):(1.4~1.8):(0.8~1):(0.5~0.6).

[0013] In a preferred embodiment, the mass ratio of the matrix resin emulsion, α-methylstyrene, hexafluorobutyl acrylate, and acetylacetoxyethyl acrylate is 9:1.5:0.8:0.6.

[0014] The addition of modified resins effectively improves the water resistance, aging resistance, and corrosion resistance of anti-mold water-based coatings, and also enhances their anti-mold performance in high-humidity environments. The modified resin incorporates methyl groups on the benzene ring, increasing steric hindrance and improving the rigidity of the polymer chain while significantly raising the glass transition temperature. The resulting rigid surface greatly reduces the physical adsorption of microorganisms (such as mold), and the methyl groups further hinder the thermal motion of polymer chain segments, reducing the water molecule diffusion coefficient. On the other hand, fluorinated segments accumulate on the coating surface during film formation, forming a dense fluorinated layer that inhibits the enzyme activity secreted by mold. The acetyl acetoxy group then forms a strongly cross-linked three-dimensional network, which further resists water molecule penetration, increasing the penetration resistance and diffusion path length, and suppressing the humidity conditions required for mold growth. Therefore, the overall performance of the water-based coating is significantly improved.

[0015] In a preferred embodiment, the dispersant is at least one of sodium polycarboxylate, ammonium polyacrylate, sodium styrene-maleic anhydride copolymer, and fatty alcohol polyoxyethylene ether phosphate.

[0016] In a preferred embodiment, the dispersant is sodium polycarboxylate.

[0017] In a preferred embodiment, the defoamer is at least one of silicone defoamers.

[0018] In a preferred embodiment, the antifungal agent is a combination of benzisothiazolinone and zinc pyrithione.

[0019] In a preferred embodiment, the mass ratio of benzisothiazolinone to zinc pyrithione is (2~2.4):(0.6~1).

[0020] In a preferred embodiment, the mass ratio of benzisothiazolinone to zinc pyrithione is 2.2:0.8.

[0021] In a preferred embodiment, the film-forming aid is at least one selected from dipropylene glycol butyl ether, dodecyl alcohol ester, tetradecyl alcohol ester, propylene glycol phenyl ether, ethylene glycol phenyl ether, and diethylene glycol monobutyl ether.

[0022] In a preferred embodiment, the film-forming aid is a combination of dodecyl alcohol ester and propylene glycol phenyl ether.

[0023] In a preferred embodiment, the mass ratio of the dodecyl alcohol ester to propylene glycol phenyl ether is (1.5~2):(1~1.4).

[0024] In a preferred embodiment, the mass ratio of the dodecyl alcohol ester to propylene glycol phenyl ether is 1.8:1.2.

[0025] In a preferred embodiment, the wetting agent is at least one of alkylphenol polyoxyethylene ether, polyoxyethylene dehydrated sorbitan monolaurate, sodium dioctyl sulfosuccinate, or nonionic polyether-modified siloxane.

[0026] In a preferred embodiment, the wetting agent is nonylphenol polyoxyethylene ether-10.

[0027] In a preferred embodiment, the polymer composition is a combination of polyurethane, aqueous epoxy emulsion, and polyester polyol.

[0028] In a preferred embodiment, the solid content of the aqueous epoxy emulsion is 35-40%.

[0029] In a preferred embodiment, the weight-average molecular weight of the aqueous epoxy emulsion is 1500~3000 Da.

[0030] In a preferred embodiment, the polyester polyol is an isophthalic acid type polyester polyol.

[0031] In a preferred embodiment, the mass ratio of the polyurethane, aqueous epoxy emulsion and polyester polyol is (3~4):(2~2.5):(1.4~1.6).

[0032] In a preferred embodiment, the filler is pretreated talc powder.

[0033] As a preferred embodiment, the method for preparing the pretreated talc powder specifically includes the following steps: mixing talc powder with stearic acid, stirring at 1000-1200 rpm at 80-90℃ for 1-2 hours, drying, and then grinding to the desired particle size.

[0034] In a preferred embodiment, the mass ratio of talc to stearic acid is (8~9):(1~1.5).

[0035] In a preferred embodiment, the D50 particle size of the pretreated talc powder is 4~5.5μm.

[0036] This application also provides a method for preparing the above-mentioned antifungal water-based coating, specifically including the following steps: S1: Mix deionized water, dispersant, wetting agent and defoamer, stir at 500~600 rpm for 20~30 min, then add filler, increase the speed to 1300~1500 rpm, and disperse at high speed for 30~35 min; S2: Add the remaining materials except the polymer composition, stir at 300~400 rpm for 20~30 min, finally add the polymer composition, adjust the viscosity to KU=90~100, after completion, control the pH value to 8~8.5, then filter to remove large particles and agglomerates, thus obtaining the coating.

[0037] This application further defines the application of antifungal waterborne coatings in high-humidity environments such as bathrooms, kitchens, and basements.

[0038] The beneficial effects of this application are:

[0039] 1. The anti-mold waterborne coating provided in this application not only achieves resistance to mold and waterborne environments, but also significantly improves the coating's aging resistance, breathability, and corrosion resistance, thereby resolving the contradictions in multiple performance aspects of existing waterborne coatings. This adapts to the application environment requirements of existing waterborne coatings and meets consumers' growing demand for comprehensive performance of waterborne coatings, thus having very broad application potential.

[0040] 2. The anti-mold water-based coating provided in this application, through the addition of modified resin, can effectively improve the waterproofness, aging resistance, and corrosion resistance of the anti-mold water-based coating, and also help improve its anti-mold performance in high humidity environments. The modified resin introduces methyl groups onto the benzene ring, increasing steric hindrance and improving the rigidity of the polymer chain while significantly raising the glass transition temperature. The resulting rigid surface can greatly reduce the physical adsorption of microorganisms (such as mold), and further, the methyl groups hinder the thermal motion of polymer chain segments, reducing the water molecule diffusion coefficient.

[0041] 3. The antifungal waterborne coating provided in this application has a modified resin that can be enriched on the coating surface through fluorinated segments during film formation to form a dense fluorinated layer, thereby inhibiting the enzyme activity secreted by mold. Then, the acetylacetoxy group forms a strong internal cross-linked three-dimensional network, which resists water molecule penetration through a denser internal cross-linked network, increases the water molecule penetration resistance and diffusion path length, and inhibits the humidity conditions required for mold growth, thereby significantly improving the overall performance of the waterborne coating. Detailed Implementation

[0042] The specific implementation examples will be used to more intuitively demonstrate and explain the content of the invention in this application.

[0043] Example 1: Antifungal water-based coating, by weight, the raw materials are: 30 parts of base resin emulsion, 15 parts of modified resin emulsion, 0.9 parts of dispersant, 0.4 parts of defoamer, 1.4 parts of antifungal agent, 3.2 parts of film-forming aid, 0.8 parts of wetting agent, 5.8 parts of polymer composition, 5.6 parts of filler, and 40 parts of deionized water.

[0044] The matrix resin emulsion is an acrylic resin emulsion with a solid content of 50%, purchased from BASF in Germany as Acronal® S 760.

[0045] The preparation method of the modified resin emulsion, by weight, specifically includes the following steps: S1: 90 parts of matrix resin emulsion, 15 parts of α-methylstyrene, 8 parts of hexafluorobutyl acrylate and 6 parts of acetyl acetoxyethyl acrylate are mixed and added to 20 parts of deionized water, and 0.3 parts of sodium dodecyl sulfate are added for emulsification. The mixture is stirred at 1600 rpm for 32 min to obtain a pre-emulsion; S2: The pre-emulsion is transferred to a reaction vessel, nitrogen is purged to replace the air, and the temperature is raised to 75°C. 0.5 parts of ammonium persulfate are dissolved in 5 parts of deionized water and slowly added dropwise to the reaction vessel over 1.5 h through a constant pressure dropping funnel. The reaction temperature is controlled at 70°C. After the addition is complete, the reaction is maintained at 75°C for 4 h; S3: After the reaction is completed, the temperature is lowered to room temperature, and ammonia water is slowly added dropwise to adjust the pH to 7.8. The mixture is then filtered through a 300-mesh filter to obtain the final product.

[0046] The dispersant was sodium polycarboxylate, purchased from Nanjing Chuhai New Material Technology Co., Ltd., China, product model DP5040; the defoamer was BYK-019; and the mildew inhibitor was a combination of benzisothiazolinone and zinc pyridinethione in a mass ratio of 2.2:0.8.

[0047] The film-forming aid is a composition of dodecyl alcohol ester and propylene glycol phenyl ether in a mass ratio of 1.8:1.2.

[0048] The wetting agent is nonylphenol polyoxyethylene ether-10.

[0049] The polymer composition is a combination of polyurethane, aqueous epoxy emulsion and polyester polyol in a mass ratio of 3.8:2.2:1.5.

[0050] The polyurethane was purchased from Dow Chemical Company of the United States, specifically the RM-2020 model.

[0051] The waterborne epoxy emulsion has a solid content of 40% and was purchased from Shandong Duoju Chemical Co., Ltd., China, as product model WB6001.

[0052] The polyester polyol is an isophthalic acid type polyester polyol.

[0053] The preparation method of the filler is a pretreated talc powder, which includes the following steps by mass: 9 parts of talc powder and 1.2 parts of stearic acid are mixed, stirred at 1000 rpm at 85°C for 1 hour, dried and then ground to D50=4.5μm.

[0054] The preparation method of antifungal water-based coating includes the following steps: S1: Mix deionized water, dispersant, wetting agent and defoamer, stir at 600 rpm for 25 min, then add filler, increase the speed to 1500 rpm, and stir at high speed for 30 min; S2: Add the remaining materials except the polymer composition, stir at 300 rpm for 20 min, finally add the polymer composition, adjust the viscosity to KU=100, control the pH value to 8 after completion, and then filter to remove large particles and agglomerates to obtain the coating.

[0055] Example 2: This example differs from Example 1 only in the following aspects: The antifungal water-based coating, by weight, contains the following raw materials: 32 parts of base resin emulsion, 11 parts of modified resin emulsion, 0.9 parts of dispersant, 0.3 parts of defoamer, 1.1 parts of antifungal agent, 3.4 parts of film-forming aid, 0.9 parts of wetting agent, 6.5 parts of polymer composition, 6.1 parts of filler, and 40 parts of deionized water.

[0056] Example 3: This example differs from Example 1 only in the following aspects: The antifungal water-based coating, by weight, contains the following raw materials: 25 parts of base resin emulsion, 17 parts of modified resin emulsion, 0.8 parts of dispersant, 0.4 parts of defoamer, 1.2 parts of antifungal agent, 2.8 parts of film-forming aid, 0.6 parts of wetting agent, 4.5 parts of polymer composition, 5.2 parts of filler, and 35 parts of deionized water.

[0057] Comparative Example 1

[0058] The only difference between this comparative example and Example 1 is as follows: The antifungal water-based coating, by weight, consists of the following raw materials: 42 parts of base resin emulsion, 3 parts of modified resin emulsion, 0.9 parts of dispersant, 0.4 parts of defoamer, 1.4 parts of antifungal agent, 3.2 parts of film-forming aid, 0.8 parts of wetting agent, 5.8 parts of polymer composition, 5.6 parts of filler, and 40 parts of deionized water.

[0059] Comparative Example 2

[0060] The only difference between this comparative example and Example 1 is as follows: The antifungal water-based coating, by weight, consists of the following raw materials: 30 parts of base resin emulsion, 15 parts of modified resin emulsion, 0.9 parts of dispersant, 0.4 parts of defoamer, 1.4 parts of antifungal agent, 3.2 parts of film-forming aid, 0.8 parts of wetting agent, 1.5 parts of polymer composition, 5.6 parts of filler, and 40 parts of deionized water.

[0061] Comparative Example 3

[0062] The only difference between this comparative example and Example 1 is that the polymer composition is a combination of polyurethane, aqueous epoxy emulsion and polyester polyol in a mass ratio of 1:3:2.

[0063] Comparative Example 4

[0064] The only difference between this comparative example and Example 1 is that the polymer composition is a combination of polyurethane, aqueous epoxy emulsion and polyester polyol in a mass ratio of 5:1:0.2.

[0065] Comparative Example 5

[0066] The only difference between this comparative example and Example 1 is the following: The preparation method of the modified resin emulsion, by mass, specifically includes the following steps: S1: 120 parts of the matrix resin emulsion, 10 parts of α-methylstyrene, 3 parts of hexafluorobutyl acrylate and 1.5 parts of acetyl acetoxyethyl acrylate are mixed and added to 20 parts of deionized water, and 0.3 parts of sodium dodecyl sulfate are added for emulsification. The mixture is stirred at 1600 rpm for 32 min to obtain a pre-emulsion; S2: The pre-emulsion is transferred to a reaction vessel, nitrogen is purged to replace the air, and the temperature is raised to 75°C. 0.5 parts of ammonium persulfate are dissolved in 5 parts of deionized water and slowly added dropwise to the reaction vessel over 1.5 h through a constant pressure dropping funnel. The reaction temperature is controlled at 70°C. After the addition is complete, the reaction is maintained at 75°C for 4 h; S3: After the reaction is completed, the temperature is lowered to room temperature, and ammonia is slowly added dropwise to adjust the pH to 7.8. The mixture is then filtered through a 300-mesh filter to obtain the final product.

[0067] Comparative Example 6

[0068] The only difference between this comparative example and Example 1 is the following: The preparation method of the modified resin emulsion, by mass, specifically includes the following steps: S1: 60 parts of the matrix resin emulsion, 25 parts of α-methylstyrene, 14 parts of hexafluorobutyl acrylate and 12 parts of acetyl acetoxyethyl acrylate are mixed and added to 20 parts of deionized water, and 0.3 parts of sodium dodecyl sulfate are added for emulsification. The mixture is stirred at 1600 rpm for 32 min to obtain a pre-emulsion; S2: The pre-emulsion is transferred to a reaction vessel, nitrogen is purged to replace the air, and the temperature is raised to 75°C. 0.5 parts of ammonium persulfate are dissolved in 5 parts of deionized water and slowly added dropwise to the reaction vessel over 1.5 h through a constant pressure dropping funnel. The reaction temperature is controlled at 70°C. After the addition is complete, the reaction is maintained at 75°C for 4 h; S3: After the reaction is completed, the temperature is lowered to room temperature, and ammonia is slowly added dropwise to adjust the pH to 7.8. The mixture is then filtered through a 300-mesh filter to obtain the final product.

[0069] Performance Evaluation

[0070] 1. The water resistance of the cured coatings of the water-based coatings prepared in the examples and comparative examples was tested according to ASTM D7334. The results were taken as the average of 10 tests and recorded in Table 1.

[0071] 2. The cured coatings of the water-based coatings prepared in the examples and comparative examples were tested for mold resistance in accordance with ASTM G21. The results were the average of 10 tests and are recorded in Table 1.

[0072] 3. The cured coatings of the waterborne coatings prepared in the examples and comparative examples were tested for aging resistance in accordance with ISO 11341. The average of 10 tests was recorded in Table 1.

[0073] 4. The cured coatings of the water-based coatings prepared in the examples and comparative examples were subjected to corrosion resistance tests in accordance with ASTM B117. The results were the average of 10 tests and are recorded in Table 1.

[0074] Table 1 Performance Test Results

[0075]

[0076] Based on the final performance test results of the examples and comparative examples, Examples 1-3 achieved excellent results in waterproofing and mildew prevention.

[0077] In Comparative Examples 1-2, the mass ratios of the base resin emulsion, modified resin emulsion, and polymer composition were adjusted. The results showed that the water contact angle, gloss retention rate, and corrosion width decreased to varying degrees compared to Examples 1-3. In Comparative Examples 3-4, the mass ratio of the waterborne epoxy emulsion and polyester polyol composition was changed. In Comparative Examples 5-6, the specific method of modifying the resin emulsion was changed. The water contact angle, mildew resistance, gloss retention rate, and corrosion width were all worse than those in Examples 1-3. The above comparative experiments demonstrate the superiority of the technical solution of the present invention.

Claims

1. An antimycotic aqueous coating, characterized by: The raw materials are: base resin emulsion 20-35 parts, modified resin emulsion 10-20 parts, dispersant 0.8-1.4 parts, defoaming agent 0.3-0.6 parts, mildew-proof agent 1-2 parts, film-forming aid 2-4 parts, wetting agent 0.5-1.5 parts, high polymer composition 3-8 parts, filler 5-10 parts, and deionized water 35-55 parts, all by mass; The base resin emulsion is an acrylic resin emulsion with a solid content of 45-50%; The preparation method of the modified resin emulsion comprises: S1: mixing the base resin emulsion, α-methyl styrene, hexafluorobutyl acrylate and acetyl acetoxyethyl acrylate and adding them into deionized water, adding sodium dodecyl sulfate for emulsification, stirring at a speed of 1500-2000 rpm for 30-40 min to obtain a pre-emulsion; S2: transferring the pre-emulsion to a reaction kettle, replacing air with nitrogen, heating to 75-80℃, dissolving ammonium persulfate in deionized water, and slowly adding it into the reaction kettle through a constant-pressure dropping funnel within 1-1.5 h, controlling the reaction temperature to be 70-75℃, and continuously reacting for 3-4 h after keeping the temperature at 75-80℃ after the addition is completed; S3: cooling to room temperature after the reaction is completed, slowly adding ammonia water to adjust the pH to 7.5-8, and then filtering through a 300-400 mesh filter screen to obtain the modified resin emulsion; The mass ratio of the base resin emulsion, α-methyl styrene, hexafluorobutyl acrylate and acetyl acetoxyethyl acrylate is (8-9.5):(1.4-1.8):(0.8-1):(0.5-0.6); The mass ratio of the base resin emulsion, modified resin emulsion and high polymer composition is (24-32):(11-17):(4-7); The high polymer composition is a combination of polyurethane, water-based epoxy emulsion and polyester polyol, with a mass ratio of (3-4):(2-2.5):(1.4-1.6); The solid content of the water-based epoxy emulsion is 35-40%, and the weight average molecular weight is 1500-3000 Da; The polyester polyol is an isophthalic acid type polyester polyol; The mildew-proof agent is a combination of benzisothiazolinone and zinc pyrithione, with a mass ratio of (2-2.4):(0.6-1).

2. The antimycotic aqueous coating according to claim 1, characterized in that: The dispersant is at least one of sodium polycarboxylate, ammonium polyacrylate, styrene-maleic anhydride copolymer sodium and fatty alcohol polyoxyethylene ether phosphate.

3. The antimycotic aqueous coating according to claim 2, characterized in that: The film-forming aid is at least one of dipropylene glycol butyl ether, dodecanol ester, tetradecanol ester, propylene glycol phenyl ether, ethylene glycol phenyl ether and diethylene glycol monobutyl ether.

4. The antimycotic aqueous coating according to claim 3, characterized in that: The film-forming aid is a combination of dodecanol ester and propylene glycol phenyl ether, with a mass ratio of (1.5-2):(1-1.4).

5. A process for the preparation of an antifungal aqueous coating according to any one of claims 1 to 4, characterized in that: Specifically comprising the following steps: S1: mixing deionized water, dispersant, wetting agent and defoaming agent, stirring at 500-600 rpm for 20-30 min, then adding fillers, increasing the stirring speed to 1300-1500 rpm, and stirring at high speed for 30-35 min; S2: adding the remaining materials except the high molecular composition, stirring at 300-400 rpm for 20-30 min, finally adding the high molecular composition, adjusting the viscosity to KU=90-100, and after completion, controlling the pH value to 8-8.5, then filtering to remove large particles and agglomerates, thus obtaining the product.

6. Use of the antifungal aqueous coating according to any one of claims 1-4 in high humidity environments such as bathrooms, kitchens and basements.

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