Domestic multifunctional waterborne strippable antiviral coating composition, preparation method and application thereof

Abstract

This invention relates to a multifunctional water-based peelable antiviral coating composition for home use, its preparation method, and its application, belonging to the field of decorative coating technology. It is prepared using a peelable acrylic resin and other raw materials such as nano-antibacterial materials. The multifunctional water-based peelable antiviral coating composition of this invention is suitable for use on substrates frequently contacted in homes, hospitals, public facilities, and stone surfaces, providing protection. It solves the technical challenge of peelable coatings maintaining peelability on rough surfaces (walls, stone, wood, and other substrates containing mineral ions), and also possesses highly effective antiviral function and excellent peelability. This product also features excellent protection, is environmentally friendly and safe, and can meet the diverse personalized needs of consumers.

Description

Technical Field

[0001] This invention relates to the field of decorative coatings technology, specifically to a multifunctional water-based peelable antiviral coating composition for home use, its preparation method, and its application. Background Technology

[0002] With the booming development of the coatings industry, consumers can learn about various types of coatings through multiple channels. The information they obtain about coatings through these channels is becoming more and more comprehensive, and consumers are becoming more and more professional. Their demands are also increasing. As a result, coating companies need to develop products that are more acceptable to consumers based on their needs.

[0003] Currently, peelable coatings are more commonly used in industrial applications, but less so in residential, hospital, public facilities, and on stone surfaces. This coating composition, while providing protection against external erosion (scratches, scratches, aging, pollution, dust, oil, fingerprints, etc.) on rough surfaces (walls, stone, wood, and other mineral-containing substrates) in residential, hospital, and public facilities, also adds antiviral properties. It overcomes the technical challenge of achieving peelability on rough surfaces (walls, stone, wood, and other mineral-containing substrates), allowing consumers to use it in daily life. It helps consumers create an antiviral coating on various substrates requiring shielding, protection, or antiviral properties, especially those requiring antiviral protection, such as walls, door handles, door frames, windows, public PC seats, or disposable express packaging—substrates frequently touched but not frequently disinfected. This creates a protective antiviral coating that reduces bacterial and viral residue on these substrates for several days. After drying, the coating can be completely peeled off in a short time without leaving any residue on the original substrate, thus providing daily protection.

[0004] In recent years, as various epidemics, influenza, and viruses have gradually affected our lives, such as wearing masks, washing hands with disinfectant, and maintaining social distancing, it can be said that for the next few years or even longer, we will need to coexist with these viruses, prevent their spread, and be constantly vigilant against their harm to humans. The transmissibility of viruses is increasing, and infections through contact with objects are frequently occurring. Individuals, workplaces, and governments regularly disinfect various substrates, but disinfection is time-consuming and labor-intensive, making it difficult to guarantee 100% complete disinfection. Therefore, it is necessary to meet people's urgent needs for health and safety in various indoor and outdoor settings.

[0005] In summary, antiviral products are still in their early stages in the coatings industry, with a vast potential for development. Most products on the market are applied to relatively simple scenarios and lack strong professional capabilities. Therefore, a product that combines the technical challenges of peelability, peelability on rough surfaces (such as walls, stone, and wood substrates containing mineral ions), and antiviral performance is extremely rare in the current market. Thus, there is an urgent need in this field to develop a multifunctional water-based peelable antiviral coating for home use, and this product needs to possess the performance indicators required for the applicable substrates. Summary of the Invention

[0006] The technical problem this invention aims to solve is to provide a multifunctional, water-based, peelable antiviral coating composition for home use and its preparation method. This composition not only covers rough surfaces (walls, stone, wood, and other mineral-containing substrates) in homes, hospitals, public facilities, and other environments to protect against external erosion (scratches, abrasions, aging, pollution, dust, oil, fingerprints, etc.), but also adds antiviral properties. Furthermore, it overcomes the technical challenge of achieving peelability on rough surfaces (walls, stone, wood, and other mineral-containing substrates), allowing consumers to use it in daily life. This helps consumers create an antiviral coating on various substrates requiring shielding, protection, or antiviral treatment, especially those requiring antiviral protection, such as walls, door handles, door frames, windows, public PC seats, or disposable express packaging—substrates that are frequently touched but not frequently disinfected. This coating can reduce bacterial and viral residues on these substrates for several days. After drying, the coating can be completely peeled off in a short time without leaving any residue on the original substrate, thus providing daily protection.

[0007] To solve the above problems, the present invention is achieved through the following technical solution:

[0008] In a first aspect of the invention, a multifunctional water-based peelable antiviral coating composition for home use is provided, comprising the following components in parts by weight:

[0009] 45–70 parts of film-forming substance;

[0010] 0.1–2.2 parts of nano-antibacterial material (preferably 0.5–2.2 parts);

[0011] 0.1 to 1 part substrate wetting agent;

[0012] 0.1 to 1 part pH adjuster;

[0013] 1 to 5.0 parts of film-forming aid;

[0014] 1 to 20.0 parts water;

[0015] and 1 to 5.0 parts of other adjuvants;

[0016] Furthermore, the pH value of the coating composition is 8.5–9.5;

[0017] The film-forming substances include: Dow PC-25 aqueous hydrophobic acrylic emulsion mixed with wax emulsion CT3342 and hydrophilic acrylic emulsion;

[0018] The weight ratio of the Dow PC-25 aqueous hydrophobic acrylic emulsion to the wax emulsion CT3342 is 5:1.

[0019] The film-forming material includes Dow PC-25 aqueous hydrophobic acrylic emulsion. The technology utilizes a macromolecular "steric hindrance" approach, effectively blocking the polar groups of latex particles through macromolecular encapsulation, reducing contact with the substrate. This results in a water-based peelable coating resin with weak adhesion but relatively easy peeling, without affecting the film's cohesiveness. Another core technology involves a special phase separation technique. This technique mixes a wax emulsion (CT3342) containing an emulsifier susceptible to divalent ions into the Dow PC-25 aqueous hydrophobic acrylic emulsion, forming a phase-separated structure with another hydrophilic acrylic resin (XK-85) in the formulation. The emulsifier in the mixed wax emulsion achieves a special water-oil equilibrium state, uniformly distributed in both emulsions. When applied to a wall surface, the emulsifier rapidly aggregates upon contact with rough surfaces (such as walls, stone, and wood substrates containing mineral ions) or interference from divalent ions in the wall. The emulsified wax emulsion quickly migrates to the hydrophobic emulsion phase, increasing the hydrophilic-hydrophobic balance between the two emulsions. This allows the hydrophilic emulsion to completely migrate to the rough surface (walls, stone, wood, etc., substrates containing mineral ions), forming the first sealing layer. The hydrophobic emulsion, not directly contacting the substrate's absorbent layer and due to its larger molecular weight, dries more slowly and forms a second film. The difference in intermolecular forces caused by the hydrophilic-hydrophobic interaction and molecular weight difference between the two coatings, combined with the effect of the wax, allows the second coating to peel off from the first layer, thus solving the peelability issue on rough surfaces (walls, stone, wood, etc., substrates containing mineral ions). Furthermore, the antiviral material remains free around the polar groups. When a virus comes into contact with the paint film, it destroys the virus's cell membrane, killing the virus and protecting the substrate.

[0020] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0021] The Dow PC-25 aqueous hydrophobic acrylic emulsion has one or more of the following characteristics:

[0022] The solid content is 44-46%;

[0023] The pH value is 7.5–8.5;

[0024] Viscosity is 300–450 mPas;

[0025] The minimum film-forming temperature is 0–5℃.

[0026] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0027] The wax emulsion CT3342 has one or more of the following characteristics:

[0028] Appearance: Low-viscosity, white, opaque liquid wax;

[0029] Paraffin solids content: 45%;

[0030] Emulsion type: Anionic;

[0031] pH value: 8.5~9.5.

[0032] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0033] The hydrophilic acrylic emulsion mentioned is XK-85 hydrophilic acrylic emulsion.

[0034] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0035] It includes one or more of the following features:

[0036] The substrate wetting agent is a dimethyl structured organosilicon surfactant, which can reduce surface tension and spread better on the substrate surface, and the leveling of the paint film is also improved. At the same time, through a large number of experiments, it was unexpectedly discovered that the peelability of adding and not adding the substrate wetting agent has a completely different effect. Adding the substrate wetting agent affects the interlayer adhesion and coating film, and the continuous peelability of the paint film is improved.

[0037] The film-forming aid is an alcohol ester-based film-forming aid, which helps the paint film to form a better film.

[0038] The pH adjuster is one or a combination of several of organic alcohol amines, potassium methylsilicate, sodium hydroxide, and sodium benzenesulfonate; preferably, it is an organic alcohol amine.

[0039] The other additives comprise the following components by weight:

[0040] 0.1 to 1 part of cosolvent; 0.1 to 3 parts of thickener (preferably 1 to 3 parts); 0.1 to 1 part of defoamer (preferably 0.1 to 0.6 parts); 0.1 to 4 parts of mildew inhibitor (preferably 0.1 to 1 part); 0.1 to 4 parts of preservative (preferably 0.1 to 1 part).

[0041] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0042] The mass ratio of the cosolvent, thickener, defoamer, mildew inhibitor, and preservative is (0.1-1):(1-3):(0.1-0.6):(0.1-1):(0.1-1). This composition ratio enables the coating to have good long-term storage properties and stability.

[0043] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0044] The nano-antibacterial material comprises nano-cuprous oxide solution and silver ion antibacterial material, wherein the weight ratio of nano-cuprous oxide solution to silver ion antibacterial material is 1-2.2:1.

[0045] Nano-cuprous oxide solutions release high concentrations of environmentally friendly copper ions, thereby disrupting cell membrane stability.

[0046] The nano-cuprous oxide solution is further optimized as follows:

[0047] The nano-cuprous oxide solution mentioned above is prepared using an organic amine solution, water, and nano-cuprous oxide.

[0048] The nano-cuprous oxide solution is further optimized as follows:

[0049] The nano-cuprous oxide solution described herein comprises the following components in parts by weight:

[0050] 2-10 parts organic amine solution, 20-40 parts nano cuprous oxide, 40-60 parts water;

[0051] The pH value of the nano-cuprous oxide solution is 12-14.

[0052] Further optimization of this household multifunctional water-based peelable antiviral coating composition is as follows:

[0053] It includes one or more of the following features:

[0054] The aforementioned nano-cuprous oxide is a red powder with a particle size between 2 and 4 μm. These nano-cuprous oxide particles can undergo photocatalytic oxidation under visible light. When added to conventional coatings, it is suitable for removing harmful gases such as formaldehyde, benzene, and ammonia released from decorative materials, as well as various viruses, cooking fumes, Freon, and Freon substitutes in indoor environments. It has significant advantages such as mildew prevention, sterilization, deodorization, and indoor air purification.

[0055] The silver ion antibacterial material mentioned above is a silver ion coupled antiviral material.

[0056] The silver ion antibacterial material (preferably using silver ion coupling technology) allows silver ions to attach to the surface of the virus membrane, preventing material exchange and replication. By migrating into the virus, it interferes with the virus's respiratory system, thereby disrupting the virus's cellular energy system.

[0057] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0058] The aforementioned nano-antibacterial material comprises the following preparation steps:

[0059] S1. Add an acceptable amount of water to the reaction tank in proportion, and control the speed of the disperser at 300-500 rpm;

[0060] S2. Then add the organic amine solution and nano cuprous oxide in sequence, and continue to disperse for 8-10 minutes;

[0061] S3. Seal and store the obtained mixture, and let it stand for 30 to 120 minutes to prepare the nano-antibacterial material.

[0062] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0063] The coating composition further includes 0 to 99 parts by weight of water; preferably 1 to 50 parts by weight of water; more preferably 5 to 20 parts by weight of water.

[0064] The appropriate amount of water added can serve as a dispersion medium and to adjust viscosity.

[0065] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0066] The hydrophilic acrylic emulsion has one or more of the following characteristics:

[0067] The solid content of the acrylic emulsion is 39-41%;

[0068] The pH value of the acrylic emulsion is 9 to 9.5;

[0069] The viscosity of the acrylic emulsion is 100–300 mPas;

[0070] The minimum film-forming temperature of the acrylic emulsion is 16–20°C.

[0071] The preferred hydrophilic acrylic emulsion is hydrophilic acrylic emulsion XK-85.

[0072] Further optimization of the household multifunctional water-based peelable antiviral coating composition of the present invention is as follows:

[0073] The thickener is a polyurethane thickener, which has good leveling properties and can effectively increase the amount of paint applied and improve the fullness of the paint film.

[0074] The defoamer is one or a combination of organosilicon defoamers and mineral oil defoamers; more preferably, the defoamer is an organosilicon defoamer.

[0075] The aforementioned anti-mold agent can effectively protect the paint film from mold growth.

[0076] The preservative described can protect the coating from spoilage during storage.

[0077] There are no specific limitations on the antifungal agents and preservatives of the present invention, as long as they do not limit the purpose of the invention. For example, the preservatives or antifungal agents can be isothiazolinone derivative preservatives, benzimidazole ester preservatives, etc.

[0078] A second aspect of the present invention provides a method for preparing a coating composition as described in the first aspect, comprising the following preparation steps:

[0079] A. Preparation of hydrophobic peelable resin mixed with wax emulsion:

[0080] a1. First, add Dow PC-25 aqueous hydrophobic acrylic emulsion to the reaction vessel according to the specified ratio, and control the dispersant rotation speed at 600 rpm;

[0081] a2. Then add wax emulsion CT3342 and continue stirring for 8-10 minutes;

[0082] a3. The obtained mixed emulsion was sealed and stored to prepare a hydrophobic peelable resin mixed with wax emulsion;

[0083] B. Preparation of coating composition:

[0084] It includes the following preparation steps:

[0085] b1. Add 5-10 parts of water to the reaction vessel in proportion and stir;

[0086] b2. Add the pH adjuster and solubilizer sequentially and stir.

[0087] b3. Then add the nano-antibacterial material and 0.1 to 1 part of water, and then increase the speed to stir to obtain the mixed system I;

[0088] b4. Reduce the rotation speed and add the hydrophobic peelable resin mixed with wax emulsion, hydrophilic acrylic emulsion, and film-forming aid to the obtained mixture system I in sequence according to the proportion, and stir.

[0089] b5. Next, add other additives (in order: cosolvent, defoamer, thickener, mildew inhibitor, and preservative) and substrate wetting agent to the reaction vessel and stir.

[0090] b6. Finally, add the remaining water, stir and adjust to the desired viscosity to obtain the coating composition;

[0091] The pH value of the resulting coating composition needs to be controlled between 8.5 and 9.5.

[0092] A third aspect of the invention provides a coating formed by applying a coating composition as described in the first aspect.

[0093] A fourth aspect of the invention provides an article of manufacture comprising the coating as described in the third aspect.

[0094] The further optimization of the article mentioned above is as follows:

[0095] The article further includes a substrate, and the coating is located on the surface of the substrate.

[0096] The further optimization of the product is as follows:

[0097] The product in question is a display card.

[0098] The further optimization of the article mentioned above is as follows:

[0099] The substrates mentioned are common substrates available on the market (walls, stone, tinplate, wood, cold-rolled steel, glass, ceramic tiles, stainless steel, aluminum plates, ABS, PS, PVC, PET, etc.) that require protection.

[0100] The household multifunctional water-based peelable antiviral coating composition of the present invention has good peelability on a variety of substrates, and the film formation speed is fast and can be peeled off after a long time. It also solves the technical difficulty of peelable coatings having peelability on rough surfaces (substrates with mineral ions such as walls, stone, and wood).

[0101] In addition, the nano-antibacterial materials, including nano-cuprous oxide solution and silver ion antibacterial materials, can destroy the cell membrane of viruses and play an antiviral role.

[0102] At the same time, it not only provides antiviral properties on various substrates such as household, hospital, public facilities, and stone, protecting against external erosion (scratches, scratches, aging, pollution, dust, oil, fingerprints, etc.), but also solves the technical challenge of peelable coatings being peelable on rough surfaces (walls, stone, wood, and other substrates containing mineral ions). This allows consumers to use it in their daily lives, helping them to add an antiviral coating to various substrates that require shielding, protection, or antiviral treatment, especially those requiring antiviral treatment, such as walls, stone, door handles, door frames, glass windows, public PC seats, or disposable express packaging. This coating can reduce the residue of bacteria and viruses on these substrates for several days.

[0103] The main advantages of the household multifunctional water-based peelable antiviral coating composition of the present invention include:

[0104] (1) The coating composition of the present invention is suitable for both indoor and outdoor use and can cover the surface of the substrate to isolate it from external corrosive substances (scratches, scratches, aging, pollution, dust, oil stains, fingerprints, etc.).

[0105] (2) This invention solves the technical difficulty of peelable coatings being peelable on rough surfaces (such as walls, stone, wood and other substrates with mineral ions). By using a special phase separation technology, a wax emulsion (brand name: CT3342) with an emulsifier that is not resistant to divalent ions is mixed into Dow PC-25 waterborne hydrophobic acrylic emulsion, and a phase separation structure is formed with another hydrophilic acrylic resin (XK-85) in the formulation. The emulsifier in the mixed wax emulsion will form a special water-oil balance state and will be evenly distributed in the two emulsions first. After being applied to stone or wall surfaces, the emulsifier rapidly agglomerates upon interference from divalent ions. The emulsified wax emulsion quickly migrates to the hydrophobic emulsion phase layer, increasing the hydrophilic-hydrophobic balance between the two emulsions. This allows the hydrophilic emulsion to completely migrate to the stone surface, forming the first sealing layer. The hydrophobic emulsion, not directly contacting the substrate's absorbent layer and due to its larger molecular weight, dries more slowly and forms the second film. Due to the hydrophilic-hydrophobic interaction and the difference in molecular weight between the two coatings, coupled with the effect of the wax, the second coating can be peeled off from the first layer. This solves the problem of peelability on rough surfaces (walls, stone, wood, and other substrates containing mineral ions). For details, see [link to detailed explanation]. Figure 1 :

[0106] (3) The coating composition of the present invention can meet the construction requirements of various substrates (e.g., walls, stone, tinplate, wood, cold-rolled steel, glass, ceramic tiles, stainless steel, aluminum plate, ABS, PS, PVC, PET), and is a multi-purpose coating composition.

[0107] (4) The film-forming material of this invention includes Dow PC-25 aqueous hydrophobic acrylic emulsion. The technology employs a macromolecular "steric hindrance" approach, utilizing the principle of macromolecular encapsulation to effectively block the polar groups of latex particles, reducing contact opportunities with the substrate. This results in an aqueous peelable coating resin with weak adhesion but relatively easy peeling without affecting the cohesive force of the coating film. The antiviral material will be free around the polar groups. When the virus comes into contact with the coating film, it will destroy the virus's cell membrane, thereby killing the virus and protecting the substrate.

[0108] (5) The coating composition of the present invention has antiviral effects. The nano antibacterial materials include nano cuprous oxide solution or silver ion antibacterial materials. Both nano antiviral materials have the following properties: by interacting with charged groups on the surface of the cell membrane through metal particles, the virus membrane is damaged and its function is destroyed, thereby fundamentally preventing the growth and long-term residue of viruses on the paint film (transmitted through droplets or other routes), preventing the spread of viruses due to contact with the substrate, and avoiding harm to public safety.

[0109] (6) The coating composition of the present invention is a water-based coating composition, which is significantly different from traditional industrial peelable coatings. The difference lies in its low odor, fast drying, convenient and quick construction, safety and environmental protection, antiviral properties, and suitability for home use, medical facilities, and public facilities where special protection is required. Attached Figure Description

[0110] Figure 1 This is a schematic diagram illustrating the preparation principle of the household multifunctional water-based peelable antiviral coating composition of the present invention. Detailed Implementation

[0111] To make the application, technical solution, and advantages of this invention clearer, the invention is described in detail with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Any simple modifications to the preparation method of this invention based on the inventive concept are within the scope of protection of this invention.

[0112] Example 1: A multifunctional water-based peelable antiviral coating composition for home use

[0113] A household multifunctional water-based peelable antiviral coating composition comprising the following parts by weight:

[0114] Table 1. Composition of the coating composition by weight

[0115]

[0116]

[0117] It is prepared through the following steps:

[0118] S1. Add 5-10 parts of water to the reaction vessel in proportion and stir, controlling the speed at 200-300 rpm;

[0119] S2. Add the pH adjuster and solubilizer sequentially and stir.

[0120] S3. Then add the nano-antibacterial material and 0.1 to 1 part of water, then increase the speed to 1500 rpm and stir and disperse for 15 minutes to obtain mixed system I;

[0121] S4. Reduce the rotation speed to 700-800 rpm, and add the hydrophobic peelable resin mixed with wax emulsion, hydrophilic acrylic emulsion, and film-forming aid to the obtained mixture system I in sequence according to the proportion, and stir.

[0122] The hydrophobic peelable resin containing the wax emulsion comprises: Dow PC-25 aqueous hydrophobic acrylic emulsion and wax emulsion CT3342, with a weight ratio of 5:1.

[0123] Preparation of the hydrophobic peelable resin containing the wax emulsion:

[0124] a1. First, add Dow PC-25 aqueous hydrophobic acrylic emulsion to the reaction vessel according to the specified ratio, and control the dispersant rotation speed at 600 rpm;

[0125] a2. Then add wax emulsion CT3342 and continue stirring for 8-10 minutes;

[0126] a3. The obtained mixed emulsion was sealed and stored to prepare a hydrophobic peelable resin mixed with wax emulsion;

[0127] S5. Next, add other additives (in order: cosolvent, defoamer, thickener, mildew inhibitor, and preservative) and substrate wetting agent to the reaction vessel and stir.

[0128] S6. Finally, add the remaining water, maintain the rotation speed at 1000-1200 rpm, disperse for 30 minutes, stir and adjust to the desired viscosity to obtain the coating composition;

[0129] The pH value of the resulting coating composition needs to be controlled between 8.5 and 9.5.

[0130] To verify the technical effectiveness of the household multifunctional water-based peelable antiviral coating composition of the present invention, a comparative experiment was designed:

[0131] The preparation methods of Comparative Examples 1 to 3 are basically the same as those of Example 1, with the main differences being the film-forming substance and whether or not a wax emulsion is added; the difference between Comparative Example 4 and Example 1 is that the antiviral material added is different, and the differences between them are detailed in Table 1.

[0132] The differences in film performance and peelability evaluation between the examples and comparative examples are detailed in Tables 2 and 3.

[0133] The differences in antiviral properties between the coatings of Example 1 and Comparative Example 4 are detailed in Table 4.

[0134] Table 2 Coating film properties

[0135]

[0136] Peelability rating: 5 points: peelable, paint film does not break when pulled; 4 points: peelable, paint film occasionally breaks when pulled; 3 points: peelable, paint film breaks when pulled; 2 points: not easy to peel; 1 point: almost impossible to peel; 0 points: impossible to peel.

[0137] Table 3. Strippability Evaluation

[0138]

[0139]

[0140] Peelability rating: 5 points: peelable, paint film does not break when pulled; 4 points: peelable, paint film occasionally breaks when pulled; 3 points: peelable, paint film breaks when pulled; 2 points: not easy to peel; 1 point: almost impossible to peel; 0 points: impossible to peel.

[0141] Table 4. Microbiological Analysis Results

[0142]

[0143] As can be seen from the above performance tests, Example 1 is the emulsion formulation combination method designed in this invention, Comparative Example 1 is a common acrylic emulsion, Comparative Example 2 is a different mixing method, Comparative Example 3 is a comparison of different premixed additives and Comparative Example 4 is a comparison of adding different types of antiviral materials. Example 1 has the characteristics of fast drying time, fastest peeling, highest score, best stain resistance and best antiviral performance.

[0144] Peelability ratings for different substrates showed that Example 1 exhibited significantly better peelability than Comparative Examples 1, 2, 3, and 4 across various substrates. Comparative Example 1 showed virtually no peelability on most substrates. Comparative Example 2, tested with a different mixing method than Example 1, showed decreased stain resistance and significantly reduced peelability on rough surfaces, failing to meet expectations for durability on rough surfaces. Comparative Example 3, without premixing, resulted in particles appearing on the dry film surface after coating, significantly reduced elongation compared to Example 1, poorer stain resistance, and significantly reduced peelability, with breakage occurring during peeling. Comparative Example 4, with the addition of different types of antiviral materials, failed to meet antiviral requirements according to microbial analysis.

[0145] This invention successfully solves the technical challenge of peelable coatings maintaining peelability on rough surfaces such as walls, stone, and wood by using phase separation technology between emulsions. Meanwhile, in Table 4, the microbial detection results of the nano antiviral material added according to the addition ratio of Example 1 show that it achieves a relatively high antiviral capacity. Compared with Comparative Example 4, which added nano zinc oxide antiviral material, the antiviral performance is even better and meets the (H3N2) Class I requirements.

[0146] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any changes, modifications, and evolutions made by those skilled in the art without departing from the scope of the present invention based on the disclosed technical content shall be considered equivalent embodiments of the present invention. Furthermore, any changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the protection scope of the present invention.

[0147] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0148] Experimental methods not specified in this invention are generally performed under conventional conditions or as recommended by the manufacturer.

[0149] Unless otherwise stated, the various optimized technical solutions in this invention can be combined with each other.

[0150] Unless otherwise stated, percentages and parts are weight percentages and weight parts.

[0151] Experimental methods not specified in the instructions and examples are generally performed under standard conditions or as recommended by the manufacturer.

[0152] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and materials similar to or equivalent to those described herein may be used in the methods of this invention.

Claims

1. A household multifunctional water-based peelable antiviral coating composition, characterized in that: It comprises the following components in parts by weight: 45–70 parts film-forming substance, 0.1–2.2 parts nano-antibacterial material, 0.1–1 part substrate wetting agent, 0.1–1 part pH adjuster, 1–5.0 parts film-forming aid, 1–20.0 parts water and 1–5.0 parts other aids; Furthermore, the pH value of the coating composition is 8.5–9.5; The film-forming substances include: a hydrophobic peelable resin mixed with wax emulsion and a hydrophilic acrylic emulsion; The hydrophobic peelable resin containing the wax emulsion comprises: Dow PC-25 aqueous hydrophobic acrylic emulsion and wax emulsion CT3342, with a weight ratio of Dow PC-25 aqueous hydrophobic acrylic emulsion to wax emulsion CT3342 of 5:

1. The nano-antibacterial material comprises nano-cuprous oxide solution and silver ion antibacterial material, with a weight ratio of nano-cuprous oxide solution to silver ion antibacterial material of 1 to 2.2:

1.

2. The household multifunctional water-based peelable antiviral coating composition according to claim 1, characterized in that: The hydrophilic acrylic emulsion mentioned is XK-85 hydrophilic acrylic emulsion.

3. The household multifunctional water-based peelable antiviral coating composition according to claim 1, characterized in that: It includes one or more of the following features: The substrate wetting agent is a dimethyl-containing organosilicon surfactant; The film-forming aid is an alcohol ester-based film-forming aid; The pH adjuster is one or a combination of several of the following: organic alcohol amines, potassium methylsilicate, sodium hydroxide, and sodium benzenesulfonate; The other additives comprise the following components by weight: 0.1 to 1 part of solubilizer, 0.1 to 3 parts of thickener, 0.1 to 1 part of defoamer, 0.1 to 4 parts of mildew inhibitor, and 0.1 to 4 parts of preservative.

4. The household multifunctional water-based peelable antiviral coating composition according to claim 3, characterized in that: The mass ratio of the cosolvent, thickener, defoamer, mildew inhibitor, and preservative is (0.1-1):(1-3):(0.1-0.6):(0.1-1):(0.1-1).

5. The household multifunctional water-based peelable antiviral coating composition according to claim 1, characterized in that: The nano-cuprous oxide solution comprises the following components in parts by weight: 2-10 parts organic amine solution, 20-40 parts nano cuprous oxide, 40-60 parts water; The pH value of the nano-cuprous oxide solution is 12-14.

6. The household multifunctional water-based peelable antiviral coating composition according to claim 5, characterized in that: It includes one or more of the following features: The aforementioned nano-cuprous oxide is a red powder with a particle size between 2 and 4 μm; The silver ion antibacterial material mentioned above is a silver ion coupled antiviral material.

7. The household multifunctional water-based peelable antiviral coating composition according to claim 5, characterized in that: The nano-cuprous oxide solution comprises the following preparation steps: S1. Add an acceptable amount of water to the reaction tank in proportion, and control the speed of the disperser at 300-500 rpm; S2. Then add the organic amine solution and nano cuprous oxide in sequence, and continue to disperse for 8-10 minutes; S3. Seal and store the obtained mixture, and let it stand for 30 to 120 minutes to prepare the nano-cuprous oxide solution.

8. A method for preparing the household multifunctional water-based peelable antiviral coating composition according to any one of claims 1 to 7, characterized in that: It includes the following preparation steps: A. Preparation of hydrophobic peelable resin mixed with wax emulsion: a1. First, add Dow PC-25 aqueous hydrophobic acrylic emulsion to the reaction vessel according to the specified ratio, and control the dispersant rotation speed at 600 rpm; a2. Then add wax emulsion CT3342 and continue stirring for 8-10 minutes; a3. The obtained mixed emulsion was sealed and stored to prepare a hydrophobic peelable resin mixed with wax emulsion; B. Preparation of coating compositions: It includes the following preparation steps: b1. Add 5-10 parts of water to the reaction vessel in proportion and stir; b2. Add the pH adjuster and solubilizer sequentially and stir. b3. Then add the nano-antibacterial material and 0.1 to 1 part of water, and then increase the speed to stir to obtain the mixed system I; b4. Reduce the rotation speed and add the hydrophobic peelable resin mixed with wax emulsion, hydrophilic acrylic emulsion, and film-forming aid to the obtained mixture system I in sequence according to the proportion, and stir. b5. Next, add other additives and substrate wetting agents to the reaction vessel in sequence and stir; b6. Finally, add the remaining water, stir and adjust to the desired viscosity to obtain the coating composition; The pH value of the resulting coating composition needs to be controlled between 8.5 and 9.

5.

9. A coating, characterized in that: The coating is applied by the household multifunctional water-based peelable antiviral coating composition of claim 1.

10. An article, characterized in that: The article comprises the coating of claim 9, and a substrate; The coating is located on the surface of the substrate.

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