Coating composition and article

Abstract

The invention relates to a coating composition and an article. The coating composition comprises: raw materials of an inorganic filler and an acrylic film-forming resin; wherein the inorganic filler is loaded with one or two of silver ions and zinc ions. Compared with other types of film-forming resin such as epoxy film-forming resin and polyurethane film-forming resin, the adopted acrylic acid film-forming resin has better oxidation resistance, silver ions and / or zinc ions in the inorganic filler can react with oxygen, sulfide and the like in the air, and as a sacrificial material, the situation that the silver ions and / or zinc ions react with the silver plating layer, and consequently use of the silver plating layer is affected is avoided. Therefore, when the coating composition is applied to the bathroom mirror, the anti-oxidation performance of the bathroom mirror can be improved.

Description

Technical Field

[0001] The present invention relates to the field of coatings, and in particular to a coating composition and a product. Background Art

[0002] Bathroom mirrors are in a humid and corrosive environment for a long time. The silver-plated layer on the edge is easily oxidized and corroded, turning black, seriously affecting the appearance and performance. The traditional technical solution is to apply glue for protection, but there is a problem that the anti-oxidation performance is not improved enough. Summary of the invention

[0003] Based on this, the present application provides a coating composition on the one hand, which is applied to bathroom mirrors to improve their anti-oxidation performance.

[0004] In addition, the present application also provides a product.

[0005] A coating composition, comprising: raw materials of an inorganic filler and an acrylic film-forming resin;

[0006] Wherein, the inorganic filler carries one or two of silver ions and zinc ions.

[0007] Optionally, in the inorganic filler, the total mass percentage of silver ions and / or zinc ions is 1% to 20%.

[0008] Optionally, in the inorganic filler, the total mass percentage of silver ions and / or zinc ions is 8% to 16%.

[0009] Optionally, the mass percentage of the inorganic filler in the coating composition is 1% to 5%.

[0010] Optionally, the mass percentage of the inorganic filler in the coating composition is 1% to 3%.

[0011] Optionally, the inorganic filler includes one or more of a flake filler and a spherical filler.

[0012] Optionally, the inorganic filler includes one or more of zirconium phosphate and glass.

[0013] Optionally, the average particle size of the inorganic filler is 0.5 μm to 10 μm.

[0014] Optionally, based on the total mass percentage of the coating composition being 100%, the raw materials of the acrylic film-forming resin include:

[0015] (Meth)acrylate 18%~26%, styrene 15%~20%, (meth)acrylic acid 1%~2%, (meth)acrylate glycidyl 0.3%~0.6%, initiator 0.05%~0.3%, pH adjuster 0.05%~0.15%, solvent 55%~60% and surfactant 0.15%~0.6%.

[0016] Optionally, the (meth)acrylate includes one or more of methyl methacrylate, butyl methacrylate, octyl methacrylate, methyl acrylate, butyl acrylate and octyl acrylate.

[0017] Optionally, the (meth)acrylate includes 15% to 20% by weight of methyl methacrylate and 3% to 6% by weight of butyl acrylate, based on the weight of the coating composition.

[0018] Optionally, the initiator comprises a persulfate.

[0019] Optionally, the pH adjuster comprises bicarbonate and / or hydrogen phosphate.

[0020] Optionally, the surfactant includes 0.1% to 0.3% of sodium dodecylbenzene sulfonate and 0.05% to 0.3% of modified polysiloxane in the coating composition.

[0021] Optionally, the coating composition further comprises a viscosity modifier, and optionally, the viscosity modifier comprises an aqueous polyurethane thickener.

[0022] Optionally, the mass percentage of the viscosity modifier in the coating composition is 0.05% to 0.3%.

[0023] A product comprises a substrate and a coating arranged on the surface of the substrate, wherein the coating is obtained by curing the coating composition on the surface of the substrate.

[0024] Optionally, the article comprises a bathroom article.

[0025] Optionally, the article comprises a bathroom mirror.

[0026] Optionally, the coating thickness is 0.1 mm to 1.5 mm.

[0027] Optionally, the coating thickness is 0.3 mm to 1 mm.

[0028] The present application has found that the silver-plated layer in the traditional bathroom mirror is prone to oxidation corrosion and blackening, mainly because the silver ions react with oxygen, sulfide, etc. in the air to blacken, which affects the use. Based on this, the present application provides a coating composition, including raw materials of inorganic fillers and acrylic film-forming resins, the inorganic fillers carry one or two of silver ions and zinc ions, and the acrylic film-forming resin has better oxidation resistance than other types of film-forming resins such as epoxy film-forming resins and polyurethane film-forming resins. The silver ions and / or zinc ions in the inorganic fillers can react with oxygen, sulfide, etc. in the air, and as sacrificial materials, they are prevented from reacting with the silver-plated layer and affecting the use of the silver-plated layer. Therefore, the above-mentioned coating composition is applied to bathroom mirrors, which is conducive to improving its oxidation resistance. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below in conjunction with the specific embodiments. The preferred embodiments of the present application are provided in the specific embodiments. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] Unless otherwise specified or there is a contradiction, the terms and phrases used in this application have the following meanings:

[0032] In this application, "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] In the description of the present application, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, "one or several" refers to any one, any two or more of the listed items. Among them, "several" refers to any two or more of the listed items.

[0035] In this application, the percentage concentration involved, unless otherwise specified, refers to the final concentration. The final concentration refers to the proportion of the added component in the system after the addition of the component.

[0036] In this document, "further", "further", "particularly", "for example", "such as", "example", "for example", etc. are used for descriptive purposes, indicating that the previous and subsequent technical solutions are related in terms of the content covered, but should not be understood as a limitation on the previous technical solution, nor can it be understood as a limitation on the protection scope of this document. In this document, unless otherwise specified, A (such as B) means that B is a non-limiting example of A, and it can be understood that A is not limited to B.

[0037] Herein, "optionally", "optional", and "optional" mean optional, that is, any one of the two parallel schemes of "yes" or "no". If multiple "optional" items appear in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" item is independent of each other. In this application, descriptions such as "optionally contain", "optionally include", etc. mean "contain or not contain". "Optional component X" means that component X exists or does not exist, or means that component X is contained or not contained.

[0038] When a numerical range is disclosed in this application, the above range is considered to be continuous and includes the minimum and maximum values ​​of the range, as well as every value between such minimum and maximum values. Further, when a range refers to an integer, every integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed in this application should be understood to include any and all subranges included therein.

[0039] In the present application, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0040] The terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0041] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0042] The first aspect of the present application provides a coating composition, comprising: raw materials of an inorganic filler and an acrylic film-forming resin;

[0043] The inorganic filler carries one or two of silver ions and zinc ions.

[0044] In some embodiments, based on the total mass percentage of the coating composition as 100%, the raw materials of the acrylic film-forming resin include:

[0045] (Meth)acrylate 18%~26%, styrene 15%~20%, (meth)acrylic acid 1%~2%, (meth)acrylate glycidyl 0.3%~0.6%, initiator 0.05%~0.3%, pH adjuster 0.05%~0.15%, solvent 55%~60% and surfactant 0.15%~0.6%.

[0046] It is understood that (meth)acrylate refers to a class of substances including methacrylate and acrylate. Similarly, (meth)acrylic acid refers to a class of substances including methacrylic acid and acrylic acid.

[0047] For example, the mass percentage of (meth)acrylate in the coating composition may be, but is not limited to, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26% or a range consisting of any two of these values.

[0048] Specifically, the (meth)acrylate may be one commonly used in the art, for example, including but not limited to one or more of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, octyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, and octyl methacrylate, mixed in any proportion. For example, butyl acrylate is n-butyl acrylate. In one embodiment, the (meth)acrylate includes one or more of methyl methacrylate, butyl methacrylate, octyl methacrylate, methyl acrylate, butyl acrylate, and octyl acrylate.

[0049] Further, the (meth)acrylate includes methyl methacrylate and butyl acrylate, or the (meth)acrylate includes methyl methacrylate and butyl acrylate. For example, butyl acrylate is n-butyl acrylate. The combination of the above two acrylates is conducive to making the prepared coating have appropriate hardness and softness, improving the density and adhesion of the coating, and further improving the oxidation resistance.

[0050] In one embodiment, the (meth)acrylate comprises 15% to 20% by weight of methyl methacrylate and 3% to 6% by weight of butyl acrylate. In another embodiment, the (meth)acrylate comprises 15% to 20% by weight of methyl methacrylate and 3% to 6% by weight of octyl acrylate.

[0051] Specifically, based on the total mass percentage of the coating composition as 100%, the raw materials of the acrylic film-forming resin include:

[0052] Methyl methacrylate 15%~20%, n-butyl acrylate 3%~6%, styrene 15%~20%, (meth)acrylic acid 1%~2%, (meth)acrylate glycidyl 0.3%~0.6%, initiator 0.05%~0.3%, pH adjuster 0.05%~0.15%, solvent 55%~60% and surfactant 0.15%~0.6%.

[0053] Exemplarily, in the coating composition, the mass percentage of methyl methacrylate may be, but not limited to, 15%, 16%, 17%, 18%, 19%, 20%, or a range consisting of any two of these values. In the coating composition, the mass percentage of n-butyl acrylate may be, but not limited to, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, or a range consisting of any two of these values. It is understood that in other embodiments, the n-butyl acrylate in the above coating composition may also be replaced by octyl acrylate, and both have similar effects when used in the coating composition.

[0054] For example, in the coating composition, the mass percentage of styrene may be, but is not limited to, 15%, 16%, 17%, 18%, 19%, 20%, or a range consisting of any two of these values.

[0055] For example, in the coating composition, the mass percentage of (meth)acrylic acid can be, but is not limited to, 1%, 1.2%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 2%, or a range consisting of any two of these values. In one example, the (meth)acrylic acid is acrylic acid.

[0056] For example, in the coating composition, the mass percentage of glycidyl (meth)acrylate may be, but is not limited to, 0.3%, 0.35%, 0.4%, 0.45%, 0.5%, 0.55%, 0.6%, or a range consisting of any two of these values. In one example, the glycidyl (meth)acrylate is glycidyl methacrylate.

[0057] Illustratively, in the coating composition, the mass percentage of the initiator may be, but is not limited to, 0.05%, 0.08%, 0.1%, 0.12%, 0.15%, 0.18%, 0.2%, 0.22%, 0.25%, 0.28%, 0.3% or a range consisting of any two of these values.

[0058] Specifically, the initiator includes a persulfate. In one example, the initiator includes ammonium persulfate.

[0059] For example, in the coating composition, the mass percentage of the pH regulator can be, but is not limited to, 0.05%, 0.06%, 0.08%, 0.1%, 0.12%, 0.14%, 0.15%, or a range consisting of any two of these values. Adding a pH regulator is beneficial to maintaining the relative stability of the system, ensuring that the reaction is carried out within a suitable pH range, and reducing possible side reactions caused by pH fluctuations.

[0060] Specifically, the pH adjuster includes bicarbonate and / or hydrogen phosphate. In one example, the pH adjuster includes sodium bicarbonate and / or sodium hydrogen phosphate.

[0061] For example, in the coating composition, the mass percentage of the solvent may be, but is not limited to, 55%, 56%, 57%, 58%, 59%, 60%, or a range consisting of any two of these values. Optionally, the solvent includes water.

[0062] For example, in the coating composition, the mass percentage of the surfactant can be, but is not limited to, 0.15%, 0.18%, 0.2%, 0.22%, 0.25%, 0.28%, 0.3%, 0.35%, 0.4%, 0.45%, 0.6%, or a range consisting of any two of these values. Adding a surfactant is beneficial to improving the wettability, dispersibility, leveling, etc. of the coating composition and improving the construction effect.

[0063] Optionally, the surfactant includes one or both of modified polysiloxane and sodium dodecylbenzene sulfonate. It can be understood that only one commonly used surfactant is given above, but it is not limited thereto.

[0064] In some embodiments, the surfactant includes modified polysiloxane and sodium dodecylbenzene sulfonate. Specifically, the surfactant includes sodium dodecylbenzene sulfonate accounting for 0.1% to 0.3% of the coating composition mass percentage and modified polysiloxane accounting for 0.05% to 0.3% of the coating composition mass percentage. Exemplarily, in the coating composition, the mass percentage of modified polysiloxane can be but not limited to 0.05%, 0.08%, 0.1%, 0.12%, 0.15%, 0.18%, 0.2%, 0.22%, 0.25%, 0.28%, 0.3% or the range composed of any two of these values. In the coating composition, the mass percentage of sodium dodecylbenzene sulfonate can be but not limited to 0.1%, 0.12%, 0.15%, 0.18%, 0.2%, 0.22%, 0.25%, 0.28%, 0.3% or the range composed of any two of these values.

[0065] Specifically, the modified polysiloxane may be, but is not limited to, polyether-modified polysiloxane.

[0066] In some of the embodiments, based on the total mass percentage of the coating composition as 100%, the raw materials of the acrylic film-forming resin include: 15%-20% methyl methacrylate, 3%-6% n-butyl acrylate, 15%-20% styrene, 1%-2% acrylic acid, 0.3%-0.6% glycidyl methacrylate, 0.05%-0.3% ammonium persulfate, 0.05%-0.15% sodium bicarbonate, 55%-60% water, 0.1%-0.3% sodium dodecylbenzene sulfonate and 0.05%-0.3% modified polysiloxane.

[0067] In some embodiments, in the inorganic filler, the total mass percentage of silver ions and / or zinc ions is 1% to 20%. For example, in the inorganic filler, the total mass percentage of silver ions and / or zinc ions can be, but is not limited to, 1%, 2%, 5%, 8%, 10%, 12%, 15%, 18%, 20%, or a range consisting of any two of these values. Optionally, in the inorganic filler, the total mass percentage of silver ions and / or zinc ions is 8% to 16%.

[0068] In some embodiments, the mass percentage of the inorganic filler in the coating composition is 1% to 5%. For example, the mass percentage of the filler in the coating composition can be, but is not limited to, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, or a range consisting of any two of these values. Optionally, the mass percentage of the inorganic filler in the coating composition is 1% to 3%.

[0069] In some embodiments, the inorganic filler includes one or more of a flake filler and a spherical filler. The use of the above fillers is conducive to ensuring better anti-oxidation performance. Further, the inorganic filler includes a flake filler. Compared with fillers of other shapes, the use of flake fillers increases the path for gas to enter the coating, is more conducive to blocking gas, and thus is conducive to further improving the anti-oxidation performance.

[0070] In some embodiments, the inorganic filler includes one or more of zirconium phosphate and glass. The glass may be, for example, a glass sheet and glass powder. Optionally, the glass is a glass sheet. Specifically, the inorganic filler includes one or two of flaky zirconium phosphate and glass sheets.

[0071] In some embodiments, the average particle size of the inorganic filler is 0.5 μm to 10 μm. For example, the average particle size of the inorganic filler can be, but is not limited to, 0.5 μm, 1 μm, 2 μm, 4 μm, 5 μm, 6 μm, 8 μm, 10 μm, or a range consisting of any two of these values.

[0072] In some embodiments, the coating composition further comprises a viscosity modifier. In some embodiments, the mass percentage of the viscosity modifier in the coating composition is 0.05% to 0.3%. For example, the mass percentage of the viscosity modifier in the coating composition may be, but is not limited to, 0.05%, 0.08%, 0.1%, 0.12%, 0.15%, 0.18%, 0.2%, 0.22%, 0.25%, 0.28%, 0.3%, or a range consisting of any two of these values.

[0073] Specifically, the viscosity modifier includes, but is not limited to, an aqueous polyurethane thickener.

[0074] Adding a viscosity modifier to the coating composition is beneficial for adjusting the viscosity of the coating composition, making it more convenient for construction. On the other hand, using a water-based polyurethane thickener as a viscosity modifier can also improve its water vapor barrier capacity, which is beneficial for further improving the oxidation resistance.

[0075] In some of the embodiments, the coating composition includes, by mass percentage, 15% to 20% methyl methacrylate, 3% to 6% n-butyl acrylate, 15% to 20% styrene, 1% to 2% acrylic acid, 0.3% to 0.6% glycidyl methacrylate, 0.05% to 0.3% initiator, 0.05% to 0.15% pH adjuster, 55% to 60% water, 0.15% to 0.6% surfactant, 1% to 5% inorganic filler and 0.05% to 0.3% viscosity regulator. Furthermore, the coating composition includes, by mass percentage: 15% to 20% methyl methacrylate, 3% to 6% n-butyl acrylate, 15% to 20% styrene, 1% to 2% acrylic acid, 0.3% to 0.6% glycidyl methacrylate, 0.05% to 0.3% ammonium persulfate, 0.05% to 0.15% sodium bicarbonate, 55% to 60% water, 0.1% to 0.3% sodium dodecylbenzene sulfonate and 0.05% to 0.3% modified polysiloxane, 1% to 5% inorganic filler and 0.05% to 0.3% water-based polyurethane thickener.

[0076] The above coating composition has at least the following advantages:

[0077] (1) The components in the above coating composition work together to greatly improve the anti-oxidation ability, and the copper accelerated salt spray test (CASS test) can reach 600 hours.

[0078] (2) The coating composition is easy to apply and does not have problems such as sagging and unstable glue discharge.

[0079] (3) The coating composition has a low curing temperature and can be cured naturally at room temperature or at a relatively low temperature, without the need for high-temperature baking treatment like epoxy materials.

[0080] (4) The coating prepared by the above coating composition has high transparency, is not yellowish, and has a good appearance.

[0081] The second aspect of the present application provides a product, including a substrate and a coating disposed on the surface of the substrate, wherein the coating is obtained by curing the above-mentioned coating composition on the surface of the substrate.

[0082] In some embodiments, the article comprises a bathroom article. Specifically, the article comprises a bathroom mirror.

[0083] In some embodiments, the thickness of the coating is 0.1mm~1.5mm. Within the above thickness range, the coating has good anti-oxidation performance. Experiments have shown that if the coating thickness is too thin, the anti-oxidation performance decreases. If the coating thickness is too thick, it may affect the appearance of the product, and sagging may occur, and the curing process will also be affected. Therefore, in some embodiments of the present application, the thickness of the coating is 0.1mm~1.5mm, and preferably, the thickness of the coating is 0.3mm~1mm. For example, the thickness of the coating can be but is not limited to 0.1mm, 0.2mm, 0.5mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.5mm or a range consisting of any two of these values.

[0084] In some embodiments, the method for preparing the above-mentioned product comprises the following steps:

[0085] Obtaining the coating composition as described above;

[0086] The coating composition is cured on the surface of the substrate to form a coating to prepare a product.

[0087] Specifically, the step of curing the coating composition may be a step commonly used in the art, such as heating curing or natural curing.

[0088] In order to make the purpose and advantages of the present application clearer, the coating composition of the present application and its effects are further described in detail below in conjunction with specific examples. It should be understood that the specific examples described herein are only used to explain the present application and shall not be used to limit the present application. The following examples do not include other components except inevitable impurities unless otherwise specified. The drugs and instruments used in the examples are conventionally selected in the art unless otherwise specified. The experimental methods for which specific conditions are not specified in the examples are implemented according to conventional conditions, such as the conditions described in the literature, books, or the methods recommended by the manufacturer.

[0089] The average particle size of the silver ion-carrying flaky zirconium phosphate filler used in the following examples and comparative examples is 1 μm, and the mass percentage of silver ions in the flaky zirconium phosphate filler is 5%. The average particle size of the zinc ion-carrying glass flake filler is 8 μm, and the mass percentage of zinc ions in the glass flake filler is 15%. The modified polysiloxane is a polyether-modified polysiloxane.

[0090] Example 1

[0091] The present embodiment provides a coating composition, which includes, by mass percentage, 15% methyl methacrylate, 3% n-butyl acrylate, 20% styrene, 1% acrylic acid, 0.6% glycidyl methacrylate, 0.2% ammonium persulfate, 0.15% sodium bicarbonate, 56.6% water, 0.1% sodium dodecylbenzene sulfonate, 0.3% modified polysiloxane, 3% flaky zirconium phosphate filler carrying silver ions, and 0.05% water-based polyurethane thickener.

[0092] Example 2

[0093] The present embodiment provides a coating composition, which includes, by mass percentage, 20% methyl methacrylate, 6% n-butyl acrylate, 15% styrene, 2% acrylic acid, 0.3% glycidyl methacrylate, 0.1% ammonium persulfate, 0.05% sodium bicarbonate, 54.9% water, 0.3% sodium dodecylbenzene sulfonate, 0.05% modified polysiloxane, 1% zinc ion-carrying glass flake filler, and 0.3% water-based polyurethane thickener.

[0094] Example 3

[0095] This embodiment provides a coating composition, which is similar to the coating composition of embodiment 2, except that the filler is a spherical glass powder filler carrying zinc ions.

[0096] Comparative Example 1

[0097] Comparative Example 1 provides a coating composition, which is similar to the coating composition of Example 1, except that it does not contain a flaky zirconium phosphate filler carrying silver ions, and its mass percentage is added to water, as shown in Table 1.

[0098] Comparative Example 2

[0099] Comparative Example 2 provides a coating composition similar to the coating composition of Example 1, except that the flaky zirconium phosphate filler does not contain silver ions.

[0100] Comparative Example 3

[0101] Comparative Example 3 provides a coating composition, which is similar to the coating composition of Example 1, except that the inorganic filler is glass flakes and does not contain silver ions.

[0102] Comparative Example 4

[0103] Comparative Example 4 provides a coating composition including an epoxy resin.

[0104] Comparative Example 5

[0105] Comparative Example 5 provides a coating composition, which comprises, by mass percentage, 97% of epoxy resin and 3% of flaky zirconium phosphate carrying silver ions.

[0106] Comparative Example 6

[0107] Comparative Example 6 provides a coating composition, which comprises, by mass percentage, 97% of epoxy resin and a glass sheet carrying zinc ions.

[0108] The formulations of the coating compositions in the above-mentioned embodiments and comparative examples are shown in Tables 1 and 2 below.

[0109] Table 1 Composition of coating compositions of various embodiments and comparative examples

[0110]

[0111] Table 2

[0112]

[0113] The coating compositions of the above-mentioned embodiments and comparative examples are cured to form a film on the surface of the substrate to obtain a coating with a thickness of 0.3 mm to 1 mm. The coating is subjected to the following copper accelerated salt spray (CASS) test, and the appearance before and after the CASS test is observed to obtain the results shown in Table 3 below. It should be noted that, since in the actual coating process, the coating is thicker in some places and thinner in some places, it is difficult to achieve a completely uniform thickness of the entire coating. The above-mentioned coating thickness of 0.3 to 1 mm means that the thickness of the entire coating is within the above-mentioned range, and the anti-oxidation performance of the coating within the above-mentioned thickness range is not affected by the coating thickness.

[0114] Table 3 Performance test results of coatings in various embodiments and comparative examples

[0115]

[0116] As can be seen from Table 3, in some embodiments of the present application, the use of an acrylic film-forming resin and an inorganic filler loaded with silver ions and / or zinc ions to prepare a coating is beneficial to improving the anti-oxidation performance of the coating. In addition, by optimizing the shape and material of the inorganic filler, it is beneficial to further improve its anti-oxidation performance.

[0117] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0118] The above-described embodiments only express several implementation methods of the present application, which is convenient for understanding the technical solution of the present application in detail, but it cannot be understood as limiting the scope of protection of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. It should be understood that the technical solutions obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the technical solutions provided in the present application are all within the protection scope of the claims attached to the present application. Therefore, the scope of protection of the patent of this application shall be based on the content of the attached claims, and the description can be used to interpret the content of the claims.

Claims

1. A coating composition, characterized in that include: Raw materials for inorganic fillers and acrylic film-forming resins; Wherein, the inorganic filler carries one or two of silver ions and zinc ions.

2. The coating composition according to claim 1, characterized in that In the inorganic filler, the total mass percentage of silver ions and / or zinc ions is 1% to 20%; Optionally, in the inorganic filler, the total mass percentage of silver ions and / or zinc ions is 8% to 16%.

3. The coating composition according to claim 1, characterized in that The mass percentage of the inorganic filler in the coating composition is 1% to 5%; Optionally, the mass percentage of the inorganic filler in the coating composition is 1% to 3%.

4. The coating composition according to claim 1, characterized in that The inorganic filler includes one or more of a flake filler and a spherical filler.

5. The coating composition according to any one of claims 1 to 4, characterized in that The inorganic filler includes one or more of zirconium phosphate and glass; and / or, The average particle size of the inorganic filler is 0.5 μm to 10 μm.

6. The coating composition according to claim 1, characterized in that Taking the total mass percentage of the coating composition as 100%, the raw materials of the acrylic film-forming resin include: (Meth)acrylate 18%~26%, styrene 15%~20%, (meth)acrylic acid 1%~2%, (meth)acrylate glycidyl 0.3%~0.6%, initiator 0.05%~0.3%, pH adjuster 0.05%~0.15%, solvent 55%~60% and surfactant 0.15%~0.6%.

7. The coating composition according to claim 6, characterized in that The (meth)acrylate includes one or more of methyl methacrylate, butyl methacrylate, octyl methacrylate, methyl acrylate, butyl acrylate and octyl acrylate; Optionally, the (meth)acrylate includes 15% to 20% by weight of methyl methacrylate and 3% to 6% by weight of butyl acrylate, based on the weight of the coating composition.

8. The coating composition according to claim 6, characterized in that The raw materials of the acrylic film-forming resin meet one or more of the following conditions: (1) The initiator comprises persulfate; (2) The pH adjuster includes bicarbonate and / or hydrogen phosphate; (3) The surfactant includes 0.1% to 0.3% of sodium dodecylbenzene sulfonate and 0.05% to 0.3% of modified polysiloxane in the coating composition.

9. The coating composition according to any one of claims 1 to 4 and 6 to 8, characterized in that The coating composition further comprises a viscosity modifier, and optionally, the viscosity modifier comprises an aqueous polyurethane thickener; Optionally, the mass percentage of the viscosity modifier in the coating composition is 0.05% to 0.3%.

10. A product, characterized in that The invention comprises a substrate and a coating arranged on the surface of the substrate, wherein the coating is obtained by curing the coating composition according to any one of claims 1 to 9 on the surface of the substrate.

11. The product according to claim 10, characterized in that The article comprises a bathroom article; optionally, the article comprises a bathroom mirror; and / or, The coating thickness is 0.1 mm to 1.5 mm, and optionally, the coating thickness is 0.3 mm to 1 mm.

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