Antibacterial anti-fog coating composition, method of making same, and transparent sheet and product containing same

Abstract

The present application relates to an antibacterial and anti-fog coating composition, a method for manufacturing the same, and a transparent sheet and a product containing the same. The antibacterial and anti-fog coating composition is prepared by polymerizing a di-ionic polymer and an emulsifier. A substrate coated with the antibacterial and anti-fog coating composition has antibacterial and anti-fog properties without losing transparency. Furthermore, the antibacterial and anti-fog properties of the coating layer do not change over time and are water-washable, so that the coating layer can be applied to sports equipment (e.g., goggles) and / or disposable medical equipment (e.g., protective masks).

Description

Technical Field

[0001] This invention relates to a coating composition, particularly an antibacterial and antifogging coating composition, a method for manufacturing the same, and transparent sheets and products containing the same. Background Technology

[0002] Transparent sheets are commonly used in sporting goods (such as goggles) and / or disposable medical supplies (such as protective shields) to protect the eyes and / or mouth and nose from foreign objects and / or germs without obstructing vision. However, in humid environments and / or with large temperature differences, transparent sheets are prone to fogging, reducing their light transmittance. Furthermore, if germs adhere to the transparent sheet, it can become a route for transmission, thus negating its protective benefits.

[0003] Existing methods for imparting antibacterial properties to transparent sheets utilize silver ions; however, silver ions are ineffective when exposed to water. Current methods for preventing fogging involve using anti-fogging agents to avoid and / or delay the condensation of moisture onto the surface of the transparent sheet. Many anti-fogging agents have both hydrophilic and hydrophobic ends, classifying them as emulsifiers. The hydrophilic end reduces the surface tension of water, causing moisture to condense and form a water film instead of droplets, while the hydrophobic end allows the water film to flow. However, emulsifiers are water-soluble, so the flowing water film can carry away the anti-fogging agent, thus limiting the effectiveness and frequency of use of anti-fogging agents.

[0004] In view of this, there is an urgent need for a coating composition that can be stored for a long time, is water-resistant, and has antibacterial and anti-fogging properties to solve the above problems. Summary of the Invention

[0005] Therefore, one aspect of the present invention is to provide a method for manufacturing an antibacterial and antifogging coating composition, comprising a polymerization step of a dual-ionic polymer and an emulsifier. The antibacterial and antifogging coating composition obtained by the above method, after being coated onto a substrate, forms a transparent sheet with antibacterial and antifogging properties, wherein the antibacterial and antifogging properties do not change over time and are washable.

[0006] Another aspect of the present invention is to provide an antibacterial and antifogging coating composition, which is prepared by the above-described manufacturing method.

[0007] Another aspect of the present invention is to provide an antibacterial and antifogging transparent sheet material, comprising a substrate and a coating layer formed using the above-described antibacterial and antifogging coating composition.

[0008] Another aspect of the present invention is to provide an antibacterial and anti-fogging product comprising the above-mentioned transparent sheet.

[0009] According to the above-described form of the present invention, a method for manufacturing an antibacterial and antifogging coating composition is provided. First, starting materials are provided, comprising a diionic polymer solution, an emulsifier, a thermal polymerization initiator, and an equilibrium amount of water. Then, the starting materials are polymerized at 55°C to 65°C to obtain the antibacterial and antifogging coating composition.

[0010] The diionic polymer solution comprises a diionic polymer and a cosolvent, wherein the diionic polymer contains a cationic group having at least one double bond. The cosolvent is selected from the group consisting of physiological saline, methanol, ethanol, and combinations thereof. Based on 100 wt% of the starting material, the content of the diionic polymer is 1 wt% to 5 wt%, and the content of the cosolvent in the starting material is 10 wt% to 15 wt%. The emulsifier contains at least one double bond, wherein based on 100 wt% of the starting material, the amount of the emulsifier is 5 wt% to 15 wt%. Based on 100 wt% of the starting material, the amount of the thermal polymerization initiator is 0.1 wt% to 0.3 wt%.

[0011] In some embodiments of the present invention, the dual-ionic polymer comprises the AU of formula (1). m BU n Block copolymers, random copolymers, or alternating copolymers,

[0012] Equation (1)

[0013] In AU expression (1), -CR 1 R 2 - The divalent methylene group with substituents shown, BU represents -CR in formula (1) 4 HCH2CR 5 H- represents a divalent propyl group with substituents, where m represents an integer from 5 to 120, n represents an integer from 5 to 120, and R... 1 Indicates a straight-chain, branched, or cyclic alkyl or ester group having 3 to 18 carbon atoms [i.e., -COOR]. x , where R x Represents a straight-chain, branched, or cyclic alkyl group, aryl group, or heteroaryl group with 5 to 12 carbon atoms, having 3 to 18 carbon atoms. 2 R is a hydrogen atom or a methyl group. 4 It is a carboxyl group, and R 5 It is a cationic group.

[0014] In some embodiments of the present invention, the cationic group is N,N-dimethylammonium-ethylene-1-amino-vinyl, N,N-dimethylammonium-propylene-1-amino-vinyl, N,N-dimethylammonium-butylene-1-amino-vinyl, or N,N-dimethylammonium-pentylene-1-amino-vinyl.

[0015] In some embodiments of the present invention, the emulsifier comprises oleochemical derivatives and / or branched polyoxyethylene nonylphenyl ether.

[0016] In some embodiments, the thermal polymerization initiator comprises 2,2'-azobisisobutyronitrile, 2,2'-azobis-2-methylbutyronitrile, dimethyl 2,2'-azobis(2-methylpropionic acid) and / or 4,4'-azobis-4-cyanopentanoic acid.

[0017] According to another aspect of the present invention, an antibacterial and antifogging coating composition is provided, which is obtained by the above-described manufacturing method.

[0018] According to another aspect of the present invention, an antibacterial and antifogging transparent sheet is provided, comprising a substrate and a coating layer, wherein the coating layer is disposed on the surface of the substrate, and the coating layer is formed using the aforementioned antibacterial and antifogging coating composition.

[0019] In some embodiments of the present invention, the coating layer is formed by coating an antibacterial and antifogging coating composition onto a substrate, wherein the transparent sheet does not fog up after being placed in hot water at 45°C to 55°C for 30 to 90 seconds.

[0020] In some embodiments of the invention, the coating layer is formed by coating an antibacterial and antifog coating composition onto a substrate, wherein bacteria on the surface of the transparent sheet are reduced by at least 80%.

[0021] According to another aspect of the present invention, an antibacterial and anti-fog product is provided, comprising the above-mentioned transparent sheet, wherein the antibacterial and anti-fog product includes goggles and / or a protective cover.

[0022] The antibacterial and antifog coating composition, its manufacturing method, and the transparent sheet and product containing it of the present invention are obtained by polymerizing a cationic dual-ionic polymer solution with an emulsifier. The antibacterial and antifog coating composition is applied to a substrate, and the resulting coating layer has antibacterial and antifog properties that do not change over time and are washable. Attached Figure Description

[0023] To make the above and other objects, features, advantages and embodiments of the present invention more apparent and understandable, the accompanying drawings are described in detail below:

[0024] Figure 1 A flowchart illustrating a method for manufacturing an antibacterial and antifogging coating composition according to an embodiment of the present invention is provided.

[0025] Figures 2A to 2C The surface of a transparent sheet according to an embodiment of the present invention is shown. Detailed Implementation

[0026] As mentioned above, the present invention provides an antibacterial and anti-fog coating composition, its manufacturing method, and a transparent sheet and product containing the composition. The composition is obtained by polymerizing a dual-ionic polymer with an emulsifier. After the obtained antibacterial and anti-fog coating composition is applied to a substrate, the resulting coating layer has antibacterial and anti-fog properties that do not change over time and are washable. Therefore, it can be applied to sports equipment (such as goggles) and / or disposable medical products (such as protective face shields).

[0027] Please see Figure 1 This is a flowchart illustrating a method 100 for manufacturing an antibacterial and antifogging coating composition according to an embodiment of the present invention. First, as shown in step 110, starting materials are provided, wherein the starting materials may include, but are not limited to, a diionic polymer solution, an emulsifier, a thermal polymerization initiator, and water. Next, the starting materials are polymerized at 55°C to 65°C to obtain the antibacterial and antifogging coating composition, as shown in steps 130 and 150.

[0028] The aforementioned dual-ionic polymer solution may include, but is not limited to, a dual-ionic polymer and a cosolvent. This dual-ionic polymer contains cationic groups, and each cationic group has at least one double bond to facilitate the polymerization reaction detailed below. In one embodiment, the dual-ionic polymer may include, but is not limited to, the structure described in patent number TW I496819 B, wherein the dual-ionic polymer comprises AU as described in formula (1). m BU n Block copolymers, random copolymers, or alternating copolymers. AU represents -CR in formula (1). 1 R 2 - The divalent methylene group with substituents shown, BU represents -CR in formula (1) 4 HCH2CR 5 H- represents a divalent propyl group with substituents, where m represents an integer from 5 to 120, and n represents an integer from 5 to 120, wherein AU has an anchoring group and BU has a biionic group or a pseudo-biionic group.

[0029] Equation (1)

[0030] In detail, R 1 Examples include linear, branched, or cyclic alkyl groups (i.e., -COOR) having 3 to 18 carbon atoms. x , where R x Represents a straight-chain, branched, or cyclic alkyl group, aryl group, or heteroaryl group with 5 to 12 carbon atoms, having 3 to 18 carbon atoms. 2 It can be, for example, a hydrogen atom or a methyl group, R 4 For example, it can be a carboxyl group (-COOH), and R 5 For example, it can be a cationic group.

[0031] In one embodiment, the cationic group may be, for example, N,N-dimethylammonium-ethylene-1-amino-vinyl, N,N-dimethylammonium-propylene-1-amino-vinyl, N,N-dimethylammonium-butylene-1-amino-vinyl and N,N-dimethylammonium-pentylene-1-amino-vinyl.

[0032] Based on a starting material content of 100% by weight, the content of the dual-ion polymer can be, for example, 1% to 5% by weight, preferably 2% to 3% by weight. If the content of the dual-ion polymer is not within the above range, the antibacterial and antifogging coating composition obtained will have poor antibacterial properties, or the antibacterial and antifogging properties will not be significantly improved even with a significant increase in production costs.

[0033] The cosolvent must be able to fully dissolve the diionic polymer. In one embodiment, the cosolvent may be, for example, selected from the group consisting of physiological saline, methanol, ethanol, and combinations thereof. In one embodiment, based on 100% by weight of the starting material, the cosolvent content may be, for example, 10% to 15% by weight. If the cosolvent content is too low, the diionic polymer cannot be uniformly mixed in the starting material. However, if the cosolvent content is too high, the resulting antibacterial and antifogging coating composition, after being applied to the substrate, may leave residual cosolvent in the coating layer, thereby irritating the skin and posing a safety concern.

[0034] The emulsifier described above has double bonds to polymerize with the double bonds on the cationic groups of the diionic polymer. In one embodiment, the emulsifier may comprise, but is not limited to, oleochemical derivatives (e.g., Finafog PET) and / or branched polyoxyethylene nonylphenyl ethers (e.g., Igepal). ® 720). Based on the amount of starting material being 100% by weight, the content of emulsifier can be, for example, 5% to 15% by weight. If the content of emulsifier is not within the above range, the anti-fogging properties of the resulting antibacterial and anti-fogging coating composition will be poor, or too much emulsifier will dilute the content of the dual-ionic polymer in the starting material, resulting in poor antibacterial properties of the resulting antibacterial and anti-fogging coating composition.

[0035] The aforementioned thermal polymerization initiator may include, but is not limited to, 2,2'-azobisisobutyronitrile, 2,2'-azobis-2-methylbutyronitrile, dimethyl 2,2'-azobis(2-methylpropionic acid) and / or 4,4'-azobis-4-cyanopentanoic acid. Based on a starting material content of 100% by weight, the content of the thermal polymerization initiator may be, for example, 0.1% by weight to 0.3% by weight. If the content of the thermal polymerization initiator is outside the above range, the efficiency of subsequent polymerization steps will be poor, or the antibacterial and antifogging properties of the resulting antibacterial and antifogging coating composition will not be significantly improved, even with a substantial increase in production costs. The aforementioned water may be, for example, distilled water, deionized water, and / or deionized water.

[0036] After the antibacterial and antifogging coating composition prepared above is applied to a substrate, a transparent sheet can be obtained. This transparent sheet includes a substrate and a coating layer, the coating layer being disposed on the surface of the substrate, and the coating layer being formed of the antibacterial and antifogging coating composition. The substrate is not limited, but high transparency is preferred; a specific example is polycarbonate (PC). In one embodiment, the coating layer may be formed, for example, by applying the antibacterial and antifogging coating composition to the surface of the substrate. The coating method is not limited; for example, the substrate may be impregnated with the antibacterial and antifogging coating composition and dried at 110°C to 130°C for 20 to 30 minutes to form a coating layer on the surface of the substrate.

[0037] The aforementioned transparent sheet material possesses antibacterial and anti-fogging properties. "Antibacterial property" as used herein refers to the resistance of the transparent sheet surface to adhesion by bacteria, viruses, and / or droplets containing them. The method of assessing antibacterial properties is not limited and can be, for example, assessed using relative adhesion percentage or relative antibacterial rate. The relative adhesion percentage is the percentage of bacteria on the surface of the transparent sheet (substrate coated with the antibacterial and anti-fogging coating composition) compared to the surface of the substrate (not coated with the antibacterial and anti-fogging coating composition), and the relative antibacterial rate is the difference between 100% and the relative adhesion percentage. Experiments have shown that the relative adhesion rate of the transparent sheet material is less than 20%, and can even be less than 10%, meaning the relative antibacterial rate can reach over 80%, or even over 90%.

[0038] The "anti-fogging property" described in this article refers to the resistance to condensation of water vapor on the surface of the transparent sheet. This anti-fogging property can be assessed, for example, by placing the transparent sheet in warm water (approximately 45°C to 55°C) for a period of time and then evaluating whether the transparency of the transparent sheet changes and / or whether water droplets form on the surface. Experiments have confirmed that when the transparent sheet is placed in water at 45°C to 55°C for 30 to 90 seconds, it retains high transparency and no water droplets adhere to the surface. It should be noted that the antibacterial and anti-fogging coating composition may optionally include dust-resistant properties, where "dust-resistant" means that the surface of the transparent sheet is not easily adhered to by dust and / or fine fibers.

[0039] The antibacterial and anti-fogging properties of the aforementioned transparent sheet do not change over time and it is washable. Experiments have confirmed that the transparent sheet retains its anti-fogging properties even after being placed at room temperature for one month. Furthermore, the transparent sheet retains its antibacterial properties after 30 washes. In other words, the antibacterial and anti-fogging coating composition of this invention and the transparent sheet made therefrom can be stored at room temperature for a long time and retain good antibacterial and anti-fogging properties even after contact with water.

[0040] The aforementioned transparent sheet material has antibacterial and anti-fogging properties, and can be applied to antibacterial and anti-fogging products such as sports equipment (e.g., goggles) and / or disposable medical supplies (e.g., protective face shields).

[0041] Furthermore, the antibacterial and antifogging coating composition of the present invention is obtained through a polymerization step of a diionic polymer and an emulsifier. The diionic polymer has anchoring groups (i.e., AU groups), providing excellent coatability, film-forming properties, and surface adhesion. Therefore, compared to a mixture of diionic polymers and emulsifiers (without a polymerization step), the antibacterial and antifogging coating composition exhibits better room temperature storage properties and water wash resistance. Secondly, compared to mixing diionic polymers and emulsifiers into a substrate, a smaller amount of diionic polymers and emulsifiers can be used to achieve better antibacterial and antifogging properties through coating.

[0042] The following examples illustrate the application of the present invention, but they are not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention.

[0043] Preparation of antibacterial and anti-fog transparent sheets

[0044] Preparation Example 1

[0045] The diionic polymer was dissolved in methanol to prepare a 10% by weight diionic polymer solution. Then, the diionic polymer solution (10% by weight) and Igepal were mixed. ®720 (10 wt%), 2,2'-azobisisobutyronitrile (0.2 wt%), and a balanced amount of water were used to obtain a starting material with a diionic polymer content of 1%. The diionic polymer was manufactured according to the method disclosed in patent number TW I496819 B (provided by Pribo Biotechnology Co., Ltd.), wherein the diionic polymer has a cationic group, and this cationic group has at least one double bond. Before use, the diionic polymer was sieved through an 80-mesh sieve. Next, the starting material was polymerized at 60°C to obtain a coating composition. PC sheets were impregnated with the coating composition and dried at 120°C for 30 minutes to obtain the transparent sheet of Preparation Example 1.

[0046] Preparation Examples 2 to 3

[0047] The process for preparing the transparent sheets in Examples 2 and 3 is the same as that in Example 1, except that the content of the dual-ion polymer in the starting material of the coating composition in Examples 2 and 3 is 2% by weight and 3% by weight, respectively.

[0048] Preparation of comparative examples

[0049] A comparative example was prepared using PC sheets without coating composition.

[0050] Evaluation methods

[0051] 1. Antibacterial properties of transparent sheets

[0052] The relative antibacterial rates of the transparent sheets prepared in Examples 1 to 3 and the comparative example, as determined by SGS antibacterial testing, are recorded in Table 1. The antibacterial testing method is briefly described below: First, the transparent sheets were sterilized by irradiating both sides with ultraviolet light for 5 minutes each. Next, the transparent sheets were placed face up in a culture dish containing bacterial suspension and cultured at 37°C for 24 hours, with a bacterial concentration of 2.5 × 10⁻⁶. 5 Colony-forming units (CFU) / mL to 10.0 × 10⁻⁶ 5 CFU / mL.

[0053] Then, the transparent sheet was removed, and any visible liquid was removed. The transparent sheet was then washed twice, and the liquid on the surface was drained. During the washing process, the transparent sheet was immersed in phosphate-buffered saline (PBS) for 5 minutes, after which the PBS was removed. Next, the front side of the test piece was rinsed with 10 mL of soybean casein digest lecithin polysorbate 80 medium (SCDLP) containing lecithin and polysorbate 80 to obtain a rinsing solution. 1 mL of the rinsing solution was spread onto a culture agar, and after incubation at 37°C for 24 hours, the percentage of bacteria on the transparent sheet of Preparation Example 1 was calculated compared to the percentage of bacteria on the transparent sheet of the Comparative Example. This yielded the relative adhesion rate of Preparation Example 1. The difference between 100% and the relative adhesion rate of Preparation Example 1 was calculated to obtain the relative antibacterial rate. It should be noted that the bacteria mentioned above include *Escherichia coli*, and the culture agar is well-known to those skilled in the art and will not be described further here.

[0054] As shown in Table 1, the relative antibacterial rate of transparent sheets with a dual-ion polymer content of 1% to 3% by weight is greater than 80%, and the relative antibacterial rate of transparent sheets with a dual-ion polymer content of 2% to 3% by weight is greater than 95%.

[0055] 2. Antibacterial properties of transparent sheets after washing

[0056] The transparent sheets from Preparation Examples 1 to 3 and the Comparative Examples were each divided into two groups: an untreated group (unwashed group) and a washed group (transparent sheets soaked in water 30 times). Next, the antibacterial tests were performed on the unwashed and washed groups of Preparation Examples 1 to 3 and the Comparative Examples to obtain the relative antibacterial rates, which are recorded in Table 1.

[0057] As shown in Table 1, the relative antibacterial rate of the transparent sheets in the unwashed group of Preparation Examples 1 to 3 was greater than 80%, and the relative antibacterial rate increased with the increase of the content of the dual-ion polymer. Furthermore, compared to the unwashed group, the relative antibacterial rate of the washed group was also higher than 80%, indicating that the transparent sheets in Preparation Examples 1 to 3 were washable.

[0058] It should be further noted that the chemical structure of the dual-ion polymer carries positive and negative charges. The hydration layer formed after it comes into contact with water can reduce the adhesion of bacteria, viruses, and / or droplets containing them to the surface. The transparent sheets in the water-washing group are immersed in water, so a dense hydration layer can be formed on the surface of the transparent sheets in Preparation Examples 1 to 3 of the water-washing group. However, the transparent sheets in Preparation Examples 1 to 3 of the unwashed group are not immersed in water, but only combine with moisture in the air, resulting in an uneven hydration layer. Therefore, the relative antibacterial rate of the transparent sheets in the water-washing group is higher than that of the transparent sheets in the unwashed group.

[0059] 3. Dustproof properties of transparent sheets

[0060] After placing the transparent sheet on a flat surface for 24 hours, observe the phenomenon of dust and / or fine fiber adhesion on the transparent sheet. Figures 2A to 2C The surfaces of the transparent sheets from Preparation Example 1, Preparation Example 2, and the Comparative Example are shown respectively. "○" indicates fewer than 5 visible dust particles and / or fine fibers per square centimeter, and "╳" indicates more than 5 visible dust particles and / or fine fibers per square centimeter. The results are recorded in Table 1.

[0061] like Figures 2A to 2C As shown in Table 1, the transparent sheets of Preparation Examples 1 and 2 had less visible dust and / or fine fibers on their surfaces than the Comparative Example, confirming that the antibacterial and antifog coating composition has dust-proof properties.

[0062] 4. Evaluate the changes in the anti-fogging properties and transparency of transparent sheets over time.

[0063] The transparency and anti-fogging properties of the transparent sheets prepared in Examples 1 to 3 and the comparative example were evaluated. The transparency was evaluated by placing the transparent sheet on a white paper with a pattern, and then observing through the transparent sheet whether the pattern was clear, whether the color saturation was reduced, and / or whether the white background was white. "○" indicates that the edge of the pattern was clear, the color saturation remained unchanged, and the white background was white, while "╳" indicates that the edge of the pattern was blurry, the saturation of the pattern was reduced, and / or the white background was beige or yellow.

[0064] The method for evaluating anti-fogging performance is to place a beaker of 50°C warm water on a white paper with a pattern, and then place a transparent sheet on the beaker for 1 minute. After that, observe the clarity of the pattern on the paper through the transparent sheet. "○" indicates that the pattern is clear, and "╳" indicates that the pattern is blurry.

[0065] Next, the changes in the transparent sheet over time were evaluated. The method was to evaluate the transparency and anti-fog properties of the transparent sheet on the day it was manufactured (Day 1), and then place the transparent sheet at room temperature (e.g., 10°C to 40°C) for 30 days, and then evaluate the transparency and anti-fog properties of the transparent sheet again. The results were recorded in Table 1.

[0066] As shown in Table 1, the transparent sheets of Preparation Example 1, Preparation Example 2, and the Comparative Preparation Example all exhibited excellent transparency, and the transparency did not change over time. Furthermore, compared to the Comparative Preparation Example, the transparent sheets of Preparation Example 1 and Preparation Example 2 demonstrated good anti-fogging properties, and these properties did not change over time.

[0067] Table 1

[0068]

[0069] "─" indicates that no detection was performed.

[0070] As described above, the antibacterial and anti-fog coating composition, its manufacturing method, and the transparent sheet and product containing it of the present invention have the advantage of performing a polymerization step on the dual-ionic polymer and emulsifier. After the antibacterial and anti-fog coating composition is coated on a substrate, the resulting transparent sheet has antibacterial and anti-fog properties. The antibacterial and anti-fog properties of this transparent sheet do not change over time, and it is washable, making it suitable for use on sporting goods (such as goggles) and / or disposable medical supplies (such as face shields).

[0071] While the present invention has been disclosed above with reference to several specific embodiments, various modifications, alterations, and substitutions can be made to the foregoing disclosure. It should be understood that, without departing from the spirit and scope of the invention, certain features of the embodiments of the invention may be used in some cases, but other features may not be used accordingly. Therefore, the spirit and scope of the invention should not be limited to the embodiments described above.

Claims

1. A method for manufacturing an antibacterial and antifogging coating composition, characterized in that, Include: Provide starting materials, wherein the starting materials comprise: A dual-ion polymer solution, comprising a dual-ion polymer and a co-solvent, wherein... The dual-ion polymer comprises a block, random or alternating copolymer of AU described by formula (1) m BU n ​ Equation (1) In AU expression (1), -CR 1 R 2 - The divalent methylene group with substituents shown, BU represents -CR in formula (1) 4 HCH2CR 5 H- represents a divalent propyl group with substituents, where m represents an integer from 5 to 120, and n represents an integer from 5 to 120. The R... 1 Indicates straight-chain, branched, or cyclic alkyl groups with 3 to 18 carbon atoms, -COOR x Aromatic or heteroaryl groups having 5 to 12 carbon atoms, this -COOR x It is an ester group, and this R x R represents a straight-chain, branched, or cyclic alkyl group, aryl group, or heteroaryl group having 3 to 18 carbon atoms. 2 The R is a hydrogen atom or a methyl group. 4 It is a carboxyl group, and the R 5 It is a cationic group; as well as The cosolvent is selected from the group consisting of physiological saline, methanol, and ethanol, wherein the amount of the starting material is 100% by weight, the content of the diionic polymer is 1% to 5% by weight, and the content of the cosolvent is 10% to 15% by weight. An emulsifier comprising at least one double bond, wherein the amount of the emulsifier is 100% by weight based on the starting material, and the amount of the emulsifier is from 5% to 15% by weight. A thermal polymerization initiator, wherein the amount of the starting material is 100% by weight, and the amount of the thermal polymerization initiator is from 0.1% to 0.3% by weight; and Balanced amount of water; and The starting material was polymerized at 55°C to 65°C to obtain the antibacterial and antifogging coating composition.

2. The method for manufacturing the antibacterial and antifogging coating composition according to claim 1, characterized in that, The cationic group is N,N-dimethylammonium-ethylene-1-amino-vinyl, N,N-dimethylammonium-propylene-1-amino-vinyl, N,N-dimethylammonium-butylene-1-amino-vinyl, or N,N-dimethylammonium-pentylene-1-amino-vinyl.

3. The method for manufacturing the antibacterial and antifogging coating composition according to claim 1, characterized in that, The emulsifier contains branched polyoxyethylene nonylphenyl ether.

4. The method for manufacturing the antibacterial and antifogging coating composition according to claim 1, characterized in that, The thermal polymerization initiator includes 2,2'-azobisisobutyronitrile, 2,2'-azobis-2-methylbutyronitrile, 2,2'-azobis(2-methylpropionic acid) dimethyl ester and / or 4,4'-azobis-4-cyanopentanoic acid.

5. A composition for an antibacterial and anti-fogging coating, characterized in that, It is produced by the manufacturing method described in any one of claims 1 to 4.

6. A transparent sheet material with antibacterial and anti-fogging properties, characterized in that, The coating comprises a substrate and a coating layer, wherein the coating layer is disposed on the surface of the substrate and the coating layer is formed using the antibacterial and antifogging coating composition according to claim 5.

7. The antibacterial and anti-fogging transparent sheet according to claim 6, characterized in that, The coating layer is formed by applying the antibacterial and antifogging coating composition to the substrate, wherein the transparent sheet does not fog up after being placed in hot water at 45°C to 55°C for 30 to 90 seconds.

8. The antibacterial and anti-fogging transparent sheet according to claim 6, characterized in that, The coating layer is formed by applying the antibacterial and antifog coating composition to the substrate, wherein the bacteria on the surface of the transparent sheet are reduced by at least 80%.

9. An antibacterial and anti-fogging product, characterized in that, The product comprises the transparent sheet according to claim 8, wherein the antibacterial and antifog product includes goggles and / or a protective face shield.

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