KR102810096B1 - Light curable coating composition having high transparency and high water repellency, manufacturing method of the same, and forming method of coating layer having high transparency and high water repellency - Google Patents

Abstract

A photocurable coating composition having high transparency and high water repellency is provided, comprising a base coating composition comprising a silane, a reactive group and a perfluorinated group bonded to the silane, and a photocurable polymer material bonded to the base coating composition, wherein the amount of the base coating composition added is controlled according to at least one use selected from among high transparency use and high water repellency use.

Description

Light curable coating composition having high transparency and high water repellency, manufacturing method of the same, and forming method of coating layer having high transparency and high water repellency

The present invention relates to a photocurable coating composition having high transparency and high water repellency, a method for producing the same, and a method for forming a coating layer having high transparency and high water repellency. More specifically, the present invention relates to a photocurable coating composition having excellent adhesion and self-cleaning characteristics while simultaneously obtaining transparency and water repellency in a trade-off relationship, a method for producing the same, and a method for forming a coating layer having high transparency and high water repellency.

Conventionally, as an example of a method for securing transparency and water repellency in a coating composition, a method for producing an organic-inorganic hybrid coating composition can be used by mixing hydrophobic inorganic nanoparticles into a polymer resin.

More specifically, the conventional method for producing an organic-inorganic hybrid coating composition may include, for example, a method for producing a silica coating composition using a sol-gel method. For example, Korean Patent Publication No. 10-1523327 discloses a method for producing a non-flammable insulating coating adhesive using a sol-gel method, including: (a) a step of mixing colloidal silica and sodium silicate, (b) a step of hydrolyzing the mixture prepared in step (a) by adding water to the mixture to produce a silicate sol, (c) a step of stabilizing the silicate sol by adding an acid solution to the prepared silicate sol, (d) a step of adding silica aerogel, aluminum oxide, and talc to the stabilized silicate sol and mixing them, and (e) a step of adding a water repellent and a surfactant to the mixture prepared in step (d) and mixing them.

However, as in the conventional coating composition manufacturing method, when mixing hydrophobic inorganic nanoparticles with a polymer resin to secure transparency and water repellency in the coating composition, additional processes such as surface modification of the inorganic nanoparticles may be required. Or, as described above, when mixing hydrophobic inorganic nanoparticles with a polymer resin, there may be the inconvenience of additionally adding an organic solvent to lower the viscosity because the viscosity of the coating composition increases.

In addition, in the case of the conventional method for manufacturing an organic-inorganic hybrid coating composition as described above, there may be a problem of generating volatile organic compounds (VOC).

On the other hand, from another perspective, since the conventional organic-inorganic hybrid coating composition contains a large amount of inorganic nanoparticles, the adhesion strength may be reduced in terms of the adhesion strength to the substrate. Furthermore, when the conventional organic-inorganic hybrid coating composition is used while attached to the substrate, the inorganic nanoparticles may peel off from the surface of the substrate, which may cause a problem in that the surface properties are reduced.

In addition, in the case of a conventional organic-inorganic hybrid coating composition including hydrophobic inorganic nanoparticles, a high-temperature process may be required during coating because it includes inorganic nanoparticles, and there may be a problem of vulnerability to impact after coating.

Meanwhile, photo-curable coating compositions manufactured using conventional methods for manufacturing organic-inorganic hybrid photo-curable coating compositions had limitations in transparency and water repellency.

In addition, the photocurable coating composition manufactured by the conventional method had the characteristic of being relatively excellent in only one property selected from transparency and water repellency.

This may be because, in the case of a photocurable coating composition manufactured by a conventional method, transparency and water repellency are in a trade-off relationship, making it difficult to obtain them simultaneously.

Therefore, it is difficult to provide high transparency and high water repellency with a conventional organic-inorganic hybrid photo-curable coating composition.

Accordingly, there is a need for a photocurable coating composition having high transparency and high water repellency.

The technical problem to be solved by the present invention is to provide a photocurable coating composition having high transparency and high water repellency, which can simultaneously obtain transparency and water repellency in a trade-off relationship, a method for producing the same, and a method for forming a coating layer having high transparency and high water repellency.

Another technical problem to be solved by the present invention is to provide a photocurable coating composition having excellent adhesion, high transparency and high water repellency, a method for producing the same, and a method for forming a coating layer having high transparency and high water repellency.

Another technical problem to be solved by the present invention is to provide a photocurable coating composition having excellent self-cleaning characteristics, high transparency and high water repellency, a method for producing the same, and a method for forming a coating layer having high transparency and high water repellency.

The technical problems to be solved by the present invention are not limited to those described above.

To solve the above technical problems, the present invention provides a photocurable coating composition having high transparency and high water repellency.

According to one embodiment, the photocurable coating composition having high transparency and high water repellency comprises a base coating composition including a silane, a reactive group bonded to the silane and a perfluorinated group, and a photocurable polymer material bonded to the base coating composition, wherein the amount of the base coating composition added can be adjusted depending on at least one use selected from a high transparency use and a high water repellency use.

According to one embodiment, the base coating composition may have a hyperbranch structure.

In one embodiment, the reactor may comprise at least one of a thiol and a methacrylate.

According to one embodiment, the photo-curable coating composition having high transparency and high water repellency can have at least one of a light transmittance of 90.6% or more and 90.7% or less, and a water contact angle of 127.4˚ or more and 132.9˚ or less.

To solve the above technical problems, the present invention provides a method for producing a photocurable coating composition having high transparency and high water repellency.

According to one embodiment, the method for producing a photocurable coating composition having high transparency and high water repellency may include the steps of: preparing a source composition from a first source including silane and a reactive group bonded to the silane; mixing the source composition with a second source including a perfluorinated group to produce a base coating composition; and mixing the base coating composition with a third source including a photocurable polymer material to produce the photocurable coating composition.

According to one embodiment, in the step of preparing the source composition, the source composition may have a hyperbranched structure.

According to one embodiment, the step of preparing the source composition comprises mixing the first source and the plasticizer and heat-treating at a first temperature range in which methanol is formed as a byproduct, thereby preparing the source composition, wherein the first temperature range may include 100° C. or more and 160° C. or less.

According to one embodiment, the step of preparing the base coating composition includes mixing the source composition and the second source and a catalyst in a solvent at a second temperature range higher than room temperature, thereby preparing the base coating composition, wherein the second source is added in an amount of 30 wt% or more to 50 wt% or less relative to the total weight of the base coating composition, and the second temperature range may include 40° C. or more to 50° C. or less.

According to one embodiment, the step of preparing the photocurable coating composition includes mixing the base coating composition and the third source and a diluent, thereby preparing the photocurable coating composition, wherein the third source and the diluent are mixed in an amount of 60 wt%:40 wt% based on the total weight of the third source and the diluent, and the base coating composition can be added in an amount of more than 1 part to less than 7 parts based on the mixed weight % of the third source and the diluent.

According to one embodiment, when the photocurable coating composition is used for high transparency applications and high water repellency applications, in the step of preparing the base coating composition, the second source may be added in an amount of 40 wt% based on the total weight of the base coating composition, and in the step of preparing the photocurable coating composition, the base coating composition may be added in an amount of more than 1 part and less than 6 parts based on the mixed weight % of the third source and the diluent.

According to one embodiment, when the photocurable coating composition is used for high transparency purposes, in the step of preparing the base coating composition, if the second source is added in an amount of 40 wt% based on the total weight of the base coating composition, in the step of preparing the photocurable coating composition, the base coating composition may be added in an amount of more than 1 part to less than 6 parts based on the mixed weight % of the third source and the diluent, and in the step of preparing the base coating composition, if the second source is added in an amount of 50 wt% based on the total weight of the base coating composition, in the step of preparing the photocurable coating composition, the base coating composition may be added in an amount of 1 part to 3 parts based on the mixed weight % of the third source and the diluent.

According to one embodiment, when the photocurable coating composition is used for a highly hydrophobic purpose, in the step of preparing the base coating composition, if the second source is added in an amount of 30 wt% based on the total weight of the base coating composition, in the step of preparing the photocurable coating composition, the base coating composition may be added in an amount of more than 1 part to 7 parts or less based on the mixed weight % of the third source and the diluent, and in the step of preparing the base coating composition, if the second source is added in an amount of 40 wt% based on the total weight of the base coating composition, in the step of preparing the photocurable coating composition, the base coating composition may be added in an amount of more than 1 part to 6 parts or less based on the mixed weight % of the third source and the diluent, and in the step of preparing the base coating composition, if the second source is added in an amount of 50 wt% based on the total weight of the base coating composition, in the step of preparing the photocurable coating composition, the base coating composition may be added in an amount of more than 1 part to 4 parts or less based on the mixed weight % of the third source and the diluent.

According to one embodiment, in the step of preparing the source composition, the first source may include at least one of thiol and methacrylate as the reactor, in the step of preparing the base coating composition, the second source may include at least one of tridecafluorooctyl acrylate and perfluorodecanethiol, the solvent may include chloroform, the catalyst may include triethylamine, and in the step of preparing the photocurable coating composition, the third source may include urethane oligomer as the photocurable polymer material, and the diluent may include hexanediol diacrylate.

To solve the above technical problems, the present invention provides a method for forming a coating layer having high transparency and high water repellency.

According to one embodiment, the method for forming a coating layer having high transparency and high water repellency may include the steps of preparing a photocurable coating composition having high transparency and high water repellency, and providing the photocurable coating composition on a surface of any one selected from a group of materials to be coated including glass and plastic, and photocuring the composition to form a coating layer having high transparency and high water repellency on the material to be coated.

According to an embodiment of the present invention, a photocurable coating composition having high transparency and high hydrophobicity can be provided, which comprises a base coating composition including a silane, a reactive group and a perfluorinated group bonded to the silane, and a photocurable polymer material bonded to the base coating composition, wherein the amount of the base coating composition added is controlled according to at least one use selected from a high transparency use and a high hydrophobic use.

More specifically, according to an embodiment of the present invention, the photocurable coating composition may be excellent in at least one of transparency and water repellency. Here, the fact that the photocurable coating composition is excellent in at least one of transparency and water repellency may include the concept that the photocurable coating composition has both high transparency and high water repellency.

Therefore, according to the present invention, in a photocurable coating composition manufactured by a conventional method, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously because they are in a trade-off relationship.

More specifically, the photocurable coating composition may have at least one of a light transmittance of 90.6% or more and 90.7% or less, and a water contact angle of 127.4˚ or more and 132.9˚ or less.

Meanwhile, the photo-curable coating composition may have excellent adhesion.

In addition, a coating layer formed using the photocurable coating composition may also have excellent self-cleaning characteristics.

FIGS. 1 to 7 are drawings for explaining a method for manufacturing a photocurable coating composition having high transparency and high water repellency according to an embodiment of the present invention.
FIG. 8 is a drawing for explaining a method for forming a coating layer having high transparency and high water repellency according to an embodiment of the present invention.
Figures 9 to 18 are drawings for explaining experimental examples of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical idea of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content can be thorough and complete and so that the idea of the present invention can be sufficiently conveyed to those skilled in the art.

In this specification, when it is mentioned that a component is on another component, it means that it can be formed directly on the other component, or a third component can be placed between them. Also, in the drawings, the thickness of shapes and regions is exaggerated for the effective explanation of the technical contents.

Also, although terms such as first, second, third, etc. have been used in various embodiments of this specification to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. Thus, what is referred to as a first component in one embodiment may also be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiments. Also, "and/or" has been used herein to mean including at least one of the components listed before and after.

In the specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "comprise" or "have" are intended to specify the presence of a feature, number, step, component, or combination thereof described in the specification, but should not be construed as excluding the possibility of the presence or addition of one or more other features, numbers, steps, components, or combinations thereof. In addition, in the present specification, "connection" is used to mean both indirectly connecting a plurality of components and directly connecting them.

Additionally, terms such as “part,” “unit,” and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

In addition, when describing the present invention below, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Conventionally, as an example of a method for securing transparency and water repellency in a coating composition, a method for producing an organic-inorganic hybrid coating composition can be used by mixing hydrophobic inorganic nanoparticles into a polymer resin.

However, as in the conventional coating composition manufacturing method, when mixing hydrophobic inorganic nanoparticles with a polymer resin to secure transparency and water repellency in the coating composition, additional processes such as surface modification of the inorganic nanoparticles may be required. Or, as described above, when mixing hydrophobic inorganic nanoparticles with a polymer resin, there may be the inconvenience of additionally adding an organic solvent to lower the viscosity because the viscosity of the coating composition increases.

In addition, in the case of the conventional method for manufacturing an organic-inorganic hybrid coating composition as described above, there may be a problem of generating volatile organic compounds (VOC).

On the other hand, from another perspective, since the conventional organic-inorganic hybrid coating composition contains a large amount of inorganic nanoparticles, the adhesion strength may be reduced in terms of the adhesion strength to the substrate. Furthermore, when the conventional organic-inorganic hybrid coating composition is used while attached to the substrate, the inorganic nanoparticles may peel off from the surface of the substrate, which may cause a problem in that the surface properties are reduced.

In addition, in the case of a conventional organic-inorganic hybrid coating composition including hydrophobic inorganic nanoparticles, a high-temperature process may be required during coating because it includes inorganic nanoparticles, and there may be a problem of vulnerability to impact after coating.

Meanwhile, photo-curable coating compositions manufactured using conventional methods for manufacturing organic-inorganic hybrid photo-curable coating compositions had limitations in transparency and water repellency.

In addition, the photocurable coating composition manufactured by the conventional method had the characteristic of being relatively excellent in only one property selected from transparency and water repellency.

This may be because, in the case of a photocurable coating composition manufactured by a conventional method, transparency and water repellency are in a trade-off relationship, making it difficult to obtain them simultaneously.

Therefore, it is difficult to provide high transparency and high water repellency with a conventional organic-inorganic hybrid photo-curable coating composition.

Accordingly, the present invention provides a photocurable coating composition having high transparency and high water repellency.

Hereinafter, a photocurable coating composition (1000) having high transparency and high water repellency according to an embodiment of the present invention is described.

According to an embodiment of the present invention, the photocurable coating composition (1000) may have excellent properties of at least one of transparency and water repellency. Here, the fact that the photocurable coating composition (1000) has excellent properties of at least one of transparency and water repellency may include the concept that the photocurable coating composition (1000) has both high transparency and high water repellency.

Therefore, according to the present invention, in a photocurable coating composition manufactured by a conventional method, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously because they are in a trade-off relationship.

More specifically, the photo-curable coating composition (1000) may have at least one of a light transmittance of 90.6% or more and 90.7% or less, and a water contact angle of 127.4° or more and 132.9° or less.

Meanwhile, the photo-curable coating composition (1000) may have excellent adhesion.

In addition, the coating layer formed with the photo-curable coating composition (1000) may also have excellent self-cleaning characteristics.

To this end, the photocurable coating composition (1000) may include at least one of a base coating composition (200) and a photocurable polymer material (31), as shown in FIG. 7.

Below, each component is described.

Base coating composition (200)

Referring to FIG. 6, the base coating composition (200) may include silane (11), a reactive group (12) bonded to the silane (11), and a perfluorinated group (21).

According to one embodiment, the reactor (12) may include at least one of a thiol and a methacrylate. However, the reactor (12) is not limited to the above-described thiol and methacrylate, and may be any one selected from the group including the above-described thiol and the group including the above-described methacrylate depending on at least one of the uses selected from the high transparency use and the high water repellency use.

To this end, referring to FIG. 4, the base coating composition (200) can be manufactured by mixing the source composition (100) and the second source (20) including a perfluorinated group (21).

More specifically, the base coating composition (200) can be manufactured by mixing the source composition (100), the second source (20), and the catalyst (24) in a solvent (23), as shown in FIG. 4. This will be described in more detail in the method for manufacturing the photocurable coating composition (1000) of the present invention, which will be described later.

According to one embodiment, the second source (20) may include at least one of tridecafluorooctyl acrylate (PF-A) and perfluorodecanethiol (PF-SH), as shown in FIG. 5 (a) and FIG. 5 (b). However, the second source (20) is not limited to the above-described tridecafluorooctyl acrylate and perfluorodecanethiol, and may be any one selected from the group including the above-described tridecafluorooctyl acrylate and the group including the above-described perfluorodecanethiol, depending on at least one of the applications selected from the high transparency application and the high water-repellent application.

According to one embodiment, the solvent (23) may include chloroform. However, the solvent (23) is not limited to the above-described chloroform, and may be any one selected from the group including the above-described chloroform according to at least one of the uses selected from the high transparency use and the high water repellency use.

According to one embodiment, the catalyst (24) may include triethylamine. However, the catalyst (24) is not limited to the above-described triethylamine, and may be any one selected from the group including the above-described triethylamine according to at least one of the uses selected from the high transparency use and the high water repellency use.

Meanwhile, referring to FIG. 2, the source composition (100) can be prepared from a first source (10) including the silane (11) and the reactor (12) combined with the silane (11).

More specifically, the source composition (100) can be manufactured by mixing the first source (10) and the plasticizer (13), as shown in Fig. 2. This will be described in more detail in the method for manufacturing the photocurable coating composition (1000) of the present invention, which will be described later.

According to one embodiment, the first source (10) may include at least one of a thiol and a methacrylate as the reactor (12). However, the reactor (12) is not limited to the above-described thiol and methacrylate, and may be any one selected from the group including the above-described thiol and the group including the above-described methacrylate depending on at least one of the uses selected from the high transparency use and the high water repellency use.

According to one embodiment, the plasticizer (13) may include neopentyl glycol. However, the plasticizer (13) is not limited to the neopentyl glycol described above, and may be any one selected from the group including the neopentyl glycol described above, depending on at least one of the uses selected from the high transparency use and the high water-repellent use.

Meanwhile, the base coating composition (200) may have a hyperbranch (HB) structure (15), as shown in FIG. 6. Here, the hyperbranch structure may be understood as a concept including a structure formed by branch differentiation, i.e., branch differentiation, during the process of manufacturing the base coating composition (200). Since the hyperbranch structure is formed by branch differentiation as described above, it may have a large number of terminals.

Accordingly, since the base coating composition (200) has a hyperbranched structure (15) as described above, it can have excellent bonding properties with the photocurable polymer material (31) described below.

Meanwhile, according to an embodiment of the present invention, the amount of the base coating composition (200) added to the photocurable coating composition (1000) can be adjusted according to at least one of the uses selected from high transparency and high water repellency. This will be described in more detail in the method for manufacturing the photocurable coating composition (1000) of the present invention described below.

Photocurable polymer material (31)

Referring to FIG. 7, the photocurable polymer material (31) can be combined with the base coating composition (200).

To this end, referring to FIG. 7, the base coating composition (200) and the third source (30) including the photocurable polymer material (31) can be mixed.

More specifically, referring to FIG. 7, the base coating composition (200) and the third source (30) and the diluent (32) may be mixed. This will be described in more detail in the method for manufacturing the photocurable coating composition (1000) of the present invention described later.

According to one embodiment, the third source (30) may include a urethane oligomer as the photocurable polymer material (31). For example, the third source (30) may include polyurethane diacrylate (PUDA) as the photocurable polymer material (31). However, the third source (30) is not limited to the above-described polyurethane diacrylate, and may be any one selected from the group including the above-described urethane oligomer according to at least one of the uses selected from the high transparency use and the high water-repellent use.

According to one embodiment, the diluent (32) may include hexanediol diacrylate (HDDA). However, the diluent (32) is not limited to the above-described hexanediol diacrylate, and may be any one selected from the group including the above-described hexanediol diacrylate according to at least one of the uses selected from the high transparency use and the high water-repellent use.

Meanwhile, according to an embodiment of the present invention, the photocurable polymer material (31), which is included in the photocurable coating composition (1000), is provided on the surface of a material to be coated, and when irradiated with light, can be photocured on the surface of the material to be coated.

Accordingly, according to the present invention, a coating layer having high transparency and high water repellency can be formed on the coating material. This will be described in more detail in the coating layer forming method of the present invention described later.

Above, a photocurable coating composition having high transparency and high water repellency according to an embodiment of the present invention has been described.

Hereinafter, a method for producing a photocurable coating composition having high transparency and high water repellency according to an embodiment of the present invention is described.

In the method for manufacturing a photo-curable coating composition having high transparency and high water repellency described below, any description overlapping with the photo-curable coating composition having high transparency and high water repellency described above may be omitted. However, omission of the overlapping description below does not mean that it is excluded, and any description overlapping below will refer to the description of the previous embodiment.

FIGS. 1 to 7 are drawings for explaining a method for manufacturing a photocurable coating composition having high transparency and high water repellency according to an embodiment of the present invention.

Referring to FIG. 1, the method for producing a photocurable coating composition having high transparency and high hydrophobicity may include at least one of a step (S110) of producing the source composition (100) from the first source (10) including the silane (11) and the reactor (12) bonded to the silane (11), a step (S120) of mixing the source composition (100) and the second source (20) including the perfluorinated group (21) to produce the base coating composition (200), and a step (S130) of mixing the base coating composition (200) and the third source (30) including the photocurable polymer material (31) to produce the photocurable coating composition (1000).

Below, each step is explained.

Step S110

Referring to FIG. 2, in step S110, the source composition (100) can be prepared from the first source (10) including the silane (11) and the reactor (12) coupled to the silane (11).

More specifically, in this step, the source composition (100) can be manufactured by mixing the first source (10) and the plasticizer (13), as shown in FIG. 2.

According to one embodiment, the first source (10) may include at least one of a thiol and a methacrylate as the reactor (12). However, the reactor (12) is not limited to the above-described thiol and methacrylate, and may be any one selected from the group including the above-described thiol and the group including the above-described methacrylate depending on at least one of the uses selected from the high transparency use and the high water repellency use.

According to one embodiment, the plasticizer (13) may include neopentyl glycol. However, the plasticizer (13) is not limited to the neopentyl glycol described above, and may be any one selected from the group including the neopentyl glycol described above, depending on at least one of the uses selected from the high transparency use and the high water-repellent use.

Meanwhile, in this step, when the first source (10) and the plasticizer (13) are mixed, methanol can be formed as a byproduct (14), as shown in FIG. 2.

To this end, in this step, when the first source (10) and the plasticizer (13) are mixed, they can be heat treated in a first temperature range (tp1) at which methanol is formed as the byproduct (14).

According to one embodiment, the first temperature range (tp1) may include 100° C. or more and 160° C. or less.

Accordingly, in this step, the source composition (100) can be manufactured.

Meanwhile, referring to FIG. 3, the source composition (100) manufactured in this step may have a hyperbranched structure (15). Here, the hyperbranched structure may be understood as a concept including a structure formed by branching, i.e., branch differentiation, during the process of manufacturing the source composition (100). Since the hyperbranched structure is formed by branch differentiation as described above, it may have a large number of terminals.

Accordingly, when the source composition (100) is mixed with the second source (20) including the perfluorinated group (21) in the step described below, since it has the hyperbranched structure (15) as described above, it can have excellent binding characteristics with the perfluorinated group (21).

Step S120

Referring to FIG. 4, in step S120, the source composition (100) and the second source (20) including the perfluorinated group (21) are mixed to produce the base coating composition (200).

More specifically, in this step, the base coating composition (200) can be manufactured by mixing the source composition (100), the second source (20), and the catalyst (24) in the solvent (23), as shown in FIG. 4.

According to one embodiment, in this step, the second source (20) may be added in an amount of 30 wt% or more and 50 wt% or less relative to the total weight of the base coating composition (200).

Accordingly, according to the present invention, at least one of transparency and water repellency of the photo-curable coating composition (1000) manufactured in the step described below may be excellent. Here, the fact that at least one of transparency and water repellency of the photo-curable coating composition (1000) is excellent may include the concept that the photo-curable coating composition (1000) has both high transparency and high water repellency.

Therefore, according to the present invention, in a photocurable coating composition manufactured by a conventional method, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously because they are in a trade-off relationship.

More specifically, the photo-curable coating composition (1000) may have at least one of the following properties: a light transmittance of 90.6% or more and 90.7% or less, and a water contact angle of 127.4° or more and 132.9° or less. This will be described in more detail in the experimental examples of the present invention.

According to one embodiment, the second source (20) may include at least one of tridecafluorooctyl acrylate (PF-A) and perfluorodecanethiol (PF-SH), as shown in FIG. 5 (a) and FIG. 5 (b). However, the second source (20) is not limited to the above-described tridecafluorooctyl acrylate and perfluorodecanethiol, and may be any one selected from the group including the above-described tridecafluorooctyl acrylate and the group including the above-described perfluorodecanethiol, depending on at least one of the applications selected from the high transparency application and the high water-repellent application.

According to one embodiment, the solvent (23) may include chloroform. However, the solvent (23) is not limited to the above-described chloroform, and may be any one selected from the group including the above-described chloroform according to at least one of the uses selected from the high transparency use and the high water repellency use.

According to one embodiment, the catalyst (24) may include triethylamine. However, the catalyst (24) is not limited to the above-described triethylamine, and may be any one selected from the group including the above-described triethylamine according to at least one of the uses selected from the high transparency use and the high water repellency use.

Meanwhile, in this step, the temperature range in which the source composition (100) and the second source (20) and the catalyst (24) are mixed in the solvent (23) may be a second temperature range (tp2) higher than room temperature.

According to one embodiment, the second temperature range (tp2) may include 40° C. or more and 50° C. or less.

Accordingly, in this step, the base coating composition (200) can be manufactured.

Meanwhile, referring to Fig. 6, the base coating composition (200) manufactured in this step may also have a hyperbranched structure (15). As for the hyperbranched structure, since it overlaps with the description of the previous embodiment, the description of the previous embodiment will be referred to.

Accordingly, the base coating composition (200) can have excellent bonding characteristics with the photocurable polymer material (31) because it has the hyperbranched structure (15) as described above when the third source (30) including the photocurable polymer material (31) is mixed in the step described below.

Step S130

Referring to FIG. 7, in step S130, the base coating composition (200) and the third source (30) including the photocurable polymer material (31) are mixed to produce the photocurable coating composition (1000).

More specifically, in this step, the photocurable coating composition (1000) can be manufactured by mixing the base coating composition (200), the third source (30), and the diluent (32), as shown in FIG. 7.

According to one embodiment, in this step, the third source (30) and the diluent (32) may be mixed in a ratio of 60 wt%:40 wt% based on the total weight of the third source (30) and the diluent (32).

Meanwhile, in this step, the base coating composition (200) may be added in an amount of more than 1 part and less than 7 parts based on the mixed weight % of the third source (30) and the diluent (32).

Accordingly, according to the present invention, at least one of transparency and water repellency of the photo-curable coating composition (1000) manufactured in this step may be excellent. Here, the fact that at least one of transparency and water repellency of the photo-curable coating composition (1000) is excellent may include the concept that the photo-curable coating composition (1000) has both high transparency and high water repellency.

Therefore, according to the present invention, in a photocurable coating composition manufactured by a conventional method, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously because they are in a trade-off relationship.

More specifically, the photo-curable coating composition (1000) may have at least one of the following properties: a light transmittance of 90.6% or more and 90.7% or less, and a water contact angle of 127.4° or more and 132.9° or less. This will be described in more detail in the experimental examples of the present invention.

According to one embodiment, the third source (30) may include a urethane oligomer as the photocurable polymer material (31). For example, the third source (30) may include polyurethane diacrylate (PUDA) as the photocurable polymer material (31). However, the third source (30) is not limited to the above-described polyurethane diacrylate, and may be any one selected from the group including the above-described urethane oligomer according to at least one of the uses selected from the high transparency use and the high water-repellent use.

According to one embodiment, the diluent (32) may include hexanediol diacrylate (HDDA). However, the diluent (32) is not limited to the above-described hexanediol diacrylate, and may be any one selected from the group including the above-described hexanediol diacrylate according to at least one of the uses selected from the high transparency use and the high water-repellent use.

Meanwhile, according to one embodiment, in this step, a photoinitiator (33, see FIGS. 10 and 11) may be further mixed together with the base coating composition (200), the third source (30), and the diluent (32).

According to one embodiment, the photoinitiator (33, see FIGS. 10 and 11) may include at least one of inter molecular hydrogen abstraction and intra molecular photo cleavage. However, the photoinitiator (33) is not limited to the above-described hydrogen abstraction and intra molecular photo cleavage types, and may be any one selected from the group of photoinitiators including the above-described hydrogen abstraction and intra molecular photo cleavage types according to at least one application selected from the high transparency application and the high water repellency application.

Meanwhile, according to an embodiment of the present invention, the photocurable coating composition (1000) manufactured according to at least one of the steps S110 to S130 described above can have the amount of material added adjusted at each step according to at least one use selected from among high transparency use and high water repellency use.

More specifically, when the photocurable coating composition (1000) is used for high transparency and high water repellency purposes, in the step S120 described above, the second source (20) is added in an amount of 40 wt% based on the total weight of the base coating composition (200), and in the step S130 described above, the base coating composition (200) may be added in an amount of more than 1 part and less than 6 parts based on the mixed weight % of the third source (30) and the diluent (32).

Accordingly, the transparency and water repellency of the photocurable coating composition (1000) manufactured according to the present invention can be excellent.

Therefore, according to the present invention, in a photocurable coating composition manufactured by a conventional method, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously because they are in a trade-off relationship.

More specifically, the photo-curable coating composition (1000) may have a light transmittance of 90.6% or more and 90.7% or less, and a water contact angle of 127.4˚ or more and 132.9˚ or less. This will be described in more detail in the experimental examples of the present invention.

Meanwhile, let us assume a case where the above-mentioned photocurable coating composition (1000) is used for high transparency purposes.

In this case, according to one embodiment, in the step S120 described above, if the second source (20) is added at 40 wt% based on the total weight of the base coating composition (200), in the step S130 described above, the base coating composition (200) may be added at more than 1 part and less than 6 parts based on the mixed weight % of the third source (30) and the diluent (32).

Alternatively, according to another embodiment, in the step S120 described above, if the second source (20) is added at 50 wt% based on the total weight of the base coating composition (200), in the step S130 described above, the base coating composition (200) may be added at 1 part or more and 3 parts or less based on the mixed weight % of the third source (30) and the diluent (32).

Accordingly, the transparency of the photocurable coating composition (1000) manufactured according to the present invention can be excellent.

More specifically, the photo-curable coating composition (1000) may have a light transmittance of 90.6% or more and 90.7% or less. This will be described in more detail in the experimental examples of the present invention.

Meanwhile, let us assume a case where the photo-curable coating composition (1000) is used for highly hydrophobic purposes.

In this case, according to one embodiment, in the step S120 described above, if the second source (20) is added at 30 wt% based on the total weight of the base coating composition (200), in the step S130 described above, the base coating composition (200) may be added at more than 1 part and less than 7 parts based on the mixed weight % of the third source (30) and the diluent (32).

Alternatively, according to another embodiment, in the step S120 described above, if the second source (20) is added at 40 wt% based on the total weight of the base coating composition (200), in the step S130 described above, the base coating composition (200) may be added at more than 1 part and less than 6 parts based on the mixed weight % of the third source (30) and the diluent (32).

Alternatively, according to another embodiment, in the step S120 described above, if the second source (20) is added at 50 wt% based on the total weight of the base coating composition (200), in the step S130 described above, the base coating composition (200) may be added at more than 1 part and less than 4 parts based on the mixed weight % of the third source (30) and the diluent (32).

Accordingly, the photo-curable coating composition (1000) manufactured according to the present invention can have excellent water repellency.

More specifically, the photocurable coating composition (1000) may have a water contact angle of 113.2° or more to 132.9° or less. This will be described in more detail in the experimental examples of the present invention.

Above, a method for producing a photocurable coating composition having high transparency and high water repellency according to an embodiment of the present invention has been described.

Hereinafter, a method for forming a coating layer having high transparency and high water repellency according to an embodiment of the present invention is described.

In the method for forming a coating layer having high transparency and high water repellency described below, any description overlapping with the previously described photocurable coating composition having high transparency and high water repellency and its manufacturing method may be omitted. However, even if the overlapping description is omitted below, it does not mean that it is excluded, and any overlapping description below will refer to the description of the previous embodiment.

FIG. 8 is a drawing for explaining a method for forming a coating layer having high transparency and high water repellency according to an embodiment of the present invention.

Referring to FIG. 8, the method for forming a coating layer having high transparency and high water repellency may include at least one of a step (S210) of preparing a photocurable coating composition (1000) having high transparency and high water repellency, and a step (S220) of providing the photocurable coating composition on a surface of any one selected from a group of materials to be coated including glass and plastic and photocuring the composition to form a coating layer having high transparency and high water repellency on the material to be coated.

Below, each step is explained.

Step S210

In step S210, a photocurable coating composition (1000) having high transparency and high water repellency can be prepared.

As for the photo-curable coating composition (1000) having the above-mentioned high transparency and high water repellency, since it overlaps with the description of the previous embodiment, reference will be made to the description of the previous embodiment.

Step S220

In step S220, the photocurable coating composition (1000) is provided on a surface selected from a group of coating materials including glass and plastic, and is photocured, so that a coating layer having high transparency and high water repellency can be formed on the coating material.

More specifically, in this step, the photo-curable coating composition (1000) is provided on a surface selected from the group of coating materials, and light, for example, ultraviolet light, can be irradiated.

Meanwhile, as described above, the photocurable coating composition (1000) includes the photocurable polymer material (31), and can be photocured on the surface of the material to be coated by light irradiation.

Accordingly, in this step, a coating layer having high transparency and high water repellency can be formed on the coating material.

According to one embodiment, the group of the coating materials may include glass, plastic, etc. used as materials for windows, lenses, panels, etc. of buildings, solar power devices, automobiles, electronic devices, sensors, etc.

Meanwhile, in the case of a photocurable coating composition manufactured by a conventional method, there was a problem of reduced adhesion to the group of coating materials described above.

However, according to the present invention, the coating layer formed by the method for forming a coating layer having high transparency and high water repellency has the technical effect of excellent adhesion. This will be described in more detail in the experimental examples of the present invention.

In addition, the coating layer formed by the method for forming a coating layer having high transparency and high water repellency of the present invention also has the technical effect of excellent self-cleaning characteristics. This will be described in more detail in the experimental examples of the present invention.

Below, an experimental example of the present invention is described.

Figures 9 to 18 are drawings for explaining experimental examples of the present invention.

Referring to FIG. 9, a substrate made of a polycarbonate plastic material is prepared as the coating material, and the photocurable coating composition (1000) manufactured according to the experimental example of the present invention is provided on the surface of the polycarbonate substrate and photocured to form a coating layer having high transparency and high water repellency on the polycarbonate substrate.

Through FIG. 9, it can be observed that the photocurable coating composition (1000) according to the experimental example of the present invention is attached to the polycarbonate substrate without lifting.

Accordingly, it can be proven that the coating layer formed according to the experimental example of the present invention has excellent adhesion.

Below, experimental examples regarding the transparency and water repellency of the present invention are described.

Preparation of a 1-1 photocurable coating composition (ex1-1) according to an experimental example of the present invention

The first source (10) including thiol as the silane (11) and the reactor (12) bonded to the silane (11), and neopentyl glycol as the plasticizer (13) were mixed, and heat-treated at the first temperature range (tp1) of 100° C. or more to 160° C. or less, to manufacture the source composition (100) having the hyperbranched structure (15).

At this time, when the first source (10) and the plasticizer (13) were mixed, methanol was formed as a by-product (14).

Among the solvent (23) chloroform, the source composition (100) and the second source (20) tridecafluorooctyl acrylate (PF-A) and the catalyst (24) triethylamine were mixed at a second temperature range (tp2) of 40° C. or more to 50° C., thereby producing the base coating composition (200) having the hyperbranched structure (15).

At this time, the second source (20) was added at 40 wt% relative to the total weight of the base coating composition (200).

By mixing polyurethane diacrylate (PUDA) as the base coating composition (200) and the third source (30), hexanediol diacrylate (HDDA) as the diluent (32) and the photoinitiator (33), a 1-1 photocurable coating composition (ex1-1) according to an experimental example of the present invention was prepared.

At this time, the third source (30) and the diluent (32) were mixed in a ratio of 60 wt%:40 wt% based on the total weight of the third source (30) and the diluent (32).

In addition, the base coating composition (200) was added as 1 part based on the mixed weight % of the third source (30) and the diluent (32).

Preparation of a 1-2 photo-curable coating composition (ex1-2) according to an experimental example of the present invention

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the base coating composition (200) was added in 3 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-2 photocurable coating composition (ex1-2) according to the experimental example of the present invention.

Preparation of the 1-3 photo-curable coating composition (ex1-3) according to the experimental example of the present invention

In the method for manufacturing the 1-1 photo-curable coating composition (ex1-1) according to the experimental example of the present invention described above, the base coating composition (200) was added in 5 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-3 photo-curable coating composition (ex1-3) according to the experimental example of the present invention.

Preparation of the 1-4 photo-curable coating composition (ex1-4) according to the experimental example of the present invention

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the base coating composition (200) was added in 6 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-4 photocurable coating composition (ex1-4) according to the experimental example of the present invention.

Preparation of the 1-1 photo-curable coating composition (cp1-1) according to comparative example

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the third source (30) and the diluent (32) were mixed in a ratio of 50 wt%:50 wt% based on the total weight of the third source (30) and the diluent (32), and the base coating composition (200) was added in 3 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-1 photocurable coating composition (cp1-1) according to the comparative example.

Preparation of 1-2 photo-curable coating composition (cp1-2) according to comparative example

In the method for manufacturing the 1-1 photo-curable coating composition (cp1-1) according to the comparative example described above, the base coating composition (200) was added in 5 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-2 photo-curable coating composition (cp1-2) according to the comparative example.

Preparation of 1-3 photo-curable coating composition (cp1-3) according to comparative example

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the third source (30) and the diluent (32) were mixed in a ratio of 70 wt%:30 wt% based on the total weight of the third source (30) and the diluent (32), and the base coating composition (200) was added as 1 part based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-3 photocurable coating composition (cp1-3) according to the comparative example.

Preparation of 1-4 photo-curable coating composition (cp1-4) according to comparative example

In the method for manufacturing the 1-3 photo-curable coating composition (cp1-3) according to the comparative example described above, the base coating composition (200) was added in 3 parts based on the mixed weight % of the 3rd source (30) and the diluent (32), thereby manufacturing the 1-4 photo-curable coating composition (cp1-4) according to the comparative example.

Preparation of 1-5 photo-curable coating composition (cp1-5) according to comparative example

In the method for manufacturing the 1-3 photo-curable coating composition (cp1-3) according to the comparative example described above, the base coating composition (200) was added in 5 parts based on the mixed weight % of the 3rd source (30) and the diluent (32), thereby manufacturing the 1-5 photo-curable coating composition (cp1-5) according to the comparative example.

Preparation of a 1-6 photo-curable coating composition (cp1-6) according to a comparative example

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the third source (30) and the diluent (32) were mixed in a ratio of 80 wt%:20 wt% based on the total weight of the third source (30) and the diluent (32), and the base coating composition (200) was added as 1 part based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-6 photocurable coating composition (cp1-6) according to the comparative example.

Preparation of a 1-7 photo-curable coating composition (cp1-7) according to a comparative example

In the method for manufacturing the 1-6 photo-curable coating composition (cp1-6) according to the comparative example described above, the base coating composition (200) was added in 3 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-7 photo-curable coating composition (cp1-7) according to the comparative example.

Preparation of 1-8 photo-curable coating composition (cp1-8) according to comparative example

In the method for manufacturing the 1-6th photocurable coating composition (cp1-6) according to the comparative example described above, the base coating composition (200) was added in 5 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 1-8th photocurable coating composition (cp1-8) according to the comparative example.

Preparation of a 2-1 photocurable coating composition (ex2-1) according to an experimental example of the present invention

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the second source (20) was added in an amount of 30 wt% based on the total weight of the base coating composition (200), and the base coating composition (200) was added in an amount of 5 parts based on the mixed weight% of the third source (30) and the diluent (32), thereby manufacturing the 2-1 photocurable coating composition (ex2-1) according to the experimental example of the present invention.

Preparation of a 2-2 photo-curable coating composition (ex2-2) according to an experimental example of the present invention

In the method for manufacturing the 2-1 photo-curable coating composition (ex2-1) according to the experimental example of the present invention described above, the base coating composition (200) was added in 7 parts based on the mixed weight % of the third source (30) and the diluent (32), thereby manufacturing the 2-2 photo-curable coating composition (ex2-2) according to the experimental example of the present invention.

Preparation of a 2-3 photo-curable coating composition (ex2-3) according to an experimental example of the present invention

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the second source (20) was added at 50 wt% relative to the total weight of the base coating composition (200), thereby manufacturing the 2-3 photocurable coating composition (ex2-3) according to the experimental example of the present invention.

Preparation of a 2-4 photo-curable coating composition (ex2-4) according to an experimental example of the present invention

In the method for manufacturing the 2-3 photo-curable coating composition (ex2-3) according to the experimental example of the present invention described above, the base coating composition (200) was added in 3 parts based on the mixed weight % of the 3rd source (30) and the diluent (32), thereby manufacturing the 2-4 photo-curable coating composition (ex2-4) according to the experimental example of the present invention.

Preparation of a 2-5 photo-curable coating composition (ex2-5) according to an experimental example of the present invention

In the method for manufacturing the 2-3 photo-curable coating composition (ex2-3) according to the experimental example of the present invention described above, the base coating composition (200) was added in 4 parts based on the mixed weight % of the 3rd source (30) and the diluent (32), thereby manufacturing the 2-5 photo-curable coating composition (ex2-5) according to the experimental example of the present invention.

Preparation of a 2-1 photo-curable coating composition (cp2-1) according to a comparative example

In the method for manufacturing the 2-1 photocurable coating composition (ex2-1) according to the experimental example of the present invention described above, the 2-1 photocurable coating composition (cp2-1) according to the comparative example was manufactured without adding the base coating composition (200).

Preparation of a 2-2 photo-curable coating composition (cp2-2) according to a comparative example

In the method for manufacturing the 1-1 photocurable coating composition (ex1-1) according to the experimental example of the present invention described above, the second source (20) was added in an amount of 60 wt% based on the total weight of the base coating composition (200), and the base coating composition (200) was added in an amount of 1 part based on the mixed weight% of the third source (30) and the diluent (32), thereby manufacturing the 2-2 photocurable coating composition (cp2-2) according to the comparative example.

Referring to FIG. 10, the transparency and water repellency of the photocurable coating compositions 1-1 to 1-3 (ex1-1 to ex1-3) according to the experimental examples of the present invention and the photocurable coating compositions 1-1 to 1-8 (cp1-1 to cp1-8) according to the comparative examples can be observed.

Through FIG. 10, it can be seen that the photocurable coating compositions (ex1-1 to ex1-3) according to Experimental Examples 1-1 to 1-3 of the present invention have a light transmittance of 90.5% or more to 90.7% or less and a water contact angle of 127.4˚ or more to 132.9˚ or less.

Meanwhile, it can be seen that the photo-curable coating compositions (cp1-1 to cp1-8) according to Comparative Examples 1-1 to 1-8 have lower light transmittance and water contact angle than those of Experimental Examples 1-1 to 1-3 (ex1-1 to ex1-3) of the present invention.

Accordingly, in accordance with the experimental example of the present invention, it can be proven that the transparency and water repellency of the photocurable coating composition (1000) are excellent.

Therefore, according to the present invention, in a photocurable coating composition manufactured by a conventional method, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously because they are in a trade-off relationship.

Meanwhile, referring to FIG. 11, transparency and water repellency of the photocurable coating compositions 1-1 to 1-4 (ex1-1 to ex1-4) and the photocurable coating compositions 2-1 to 2-5 (ex2-1 to ex2-5) according to the experimental examples of the present invention, and the photocurable coating compositions 2-1 and 2-2 (cp2-1, cp2-2) according to the comparative examples can be observed.

Through FIG. 11, it can be seen that the photocurable coating compositions (ex1-1 to ex1-3) according to Experimental Examples 1-1 to 1-3 of the present invention have, as previously discussed, a light transmittance of 90.5% or more to 90.7% or less and a water contact angle of 127.4˚ or more to 132.9˚ or less.

Meanwhile, it can be seen that the photo-curable coating compositions (cp1-1 to cp1-8) according to Comparative Examples 1-1 to 1-8 have lower light transmittance and water contact angle than those of Experimental Examples 1-1 to 1-3 (ex1-1 to ex1-3) of the present invention.

Accordingly, in accordance with the experimental example of the present invention, it can be proven that the transparency and water repellency of the photocurable coating composition (1000) are excellent, as described above.

Therefore, according to the present invention, it is possible to solve the problem that transparency and water repellency are difficult to obtain simultaneously in a photocurable coating composition manufactured by a conventional method because they are in a trade-off relationship.

Meanwhile, through FIG. 11, it can be seen that the photocurable coating compositions (ex2-1, ex2-2, ex1-4, ex2-3 to ex2-5) according to Experimental Examples 2-1, 2-2, 1-4, 2-3 to 2-5 of the present invention have a water contact angle of 113.2˚ or more to 132.4˚ or less.

Meanwhile, it can be seen that the water contact angle of the photocurable coating composition (cp2-1) according to Comparative Example 2-1 is 71˚, which is significantly lower than that of Experimental Examples 2-1, 2-2, 1-4, 2-3 to 2-5 (ex2-1, ex2-2, ex1-4, ex2-3 to ex2-5) of the present invention.

Accordingly, in accordance with the experimental example of the present invention, it can be proven that the water repellency of the photo-curable coating composition (1000) is excellent, as described above.

Therefore, according to the present invention, the photo-curable coating composition (1000) can be selectively used for highly hydrophobic purposes.

Meanwhile, through Fig. 11, it can be seen that the photocurable coating compositions (ex2-3, ex2-4) according to experimental examples 2-3 and 2-4 of the present invention have a light transmittance of 90.6%.

Meanwhile, it can be seen that the light transmittance of the photo-curable coating composition (cp2-2) according to Comparative Example 2-2 is 88.8%, which is significantly lower than that of Experimental Examples 2-3 and 2-4 (ex2-3, ex2-4) of the present invention.

Accordingly, in accordance with the experimental example of the present invention, it can be proven that the transparency of the photocurable coating composition (1000) is excellent, as described above.

Therefore, according to the present invention, the photo-curable coating composition (1000) can be selectively used for high transparency purposes.

Referring to FIG. 12 (a), the photocurable coating composition (1000) manufactured according to the experimental example of the present invention was provided on a glass (gl) plate, and as shown in FIG. 12 (b), water (wt) was provided on the glass (gl) plate on which the photocurable coating composition (1000) was provided, and as shown in FIG. 12 (c), the photocurable coating composition (1000) manufactured according to the experimental example of the present invention was provided, and the self-cleaning characteristics were evaluated.

Through Fig. 12 (c), it can be proven that the photocurable coating composition (1000) manufactured according to the experimental example of the present invention has excellent self-cleaning characteristics.

This may be because, according to the experimental example of the present invention, the photocurable coating composition (1000) has high water repellency as described above.

FIG. 13 illustrates a photocurable coating composition (1000a) containing a thiol as the reactor (12) according to an experimental example of the present invention, FIG. 14 illustrates H-NMR (nuclear magnetic resonance) of the photocurable coating composition (1000a), and FIG. 15 illustrates FT-IR (Fourier transform-infrared spectroscopy) of the photocurable coating composition (1000a).

Through FIGS. 13 and 14, it can be seen that the photocurable coating composition (1000a) includes the base coating composition (200) and the photocurable polymer material (31).

Meanwhile, the reactive group (12), i.e., thiol, included in the photocurable coating composition (1000a) may be volatilized while the coating layer is formed through the coating layer forming method of the present invention as described above.

FIG. 16 illustrates a photocurable coating composition (1000b) containing methacrylate in the reactor (12) according to an experimental example of the present invention, FIG. 17 illustrates H-NMR of the photocurable coating composition (1000b), and FIG. 18 illustrates FT-IR of the photocurable coating composition (1000b).

Through FIGS. 16 to 18, it can be seen that the photocurable coating composition (1000b) includes the base coating composition (200) and the photocurable polymer material (31).

Meanwhile, the reactor (12), i.e., methacrylate, included in the photocurable coating composition (1000b) may be volatilized while the coating layer is formed through the coating layer forming method of the present invention as described above.

Above, although the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to specific embodiments, and should be interpreted by the appended claims. In addition, those who have acquired common knowledge in this technical field should understand that many modifications and variations are possible without departing from the scope of the present invention.

10: Source 1
11: Silan
12: Reactor
13: Plasticizer
14: By-product
15: Hyperbranch structure
20: Second Source
21: Perfluorinated
23: Solvent
24: Catalyst
30: Third Source
31: Photocurable polymer material
32: Thinner
33: The opening ceremony
100: Source Composition
200: Base coating composition
1000: Photocurable coating composition having high transparency and high water repellency

Claims (14)

A base coating composition comprising a silane, a reactive group bonded to the silane, and a perfluorinated group; and
A photocurable polymer material combined with the above base coating composition;
Depending on at least one of the uses selected from high transparency use and high water repellency use, the amount of the base coating composition added is adjusted,
A photo-curable coating composition having high transparency and high water repellency, comprising a water contact angle of 127.4 ˚ or more to 132.9 ˚ or less, according to the above-mentioned high water repellency use.
In the first paragraph,
The above base coating composition,
A photocurable coating composition having a hyperbranch structure and having high transparency and high hydrophobicity.
In the first paragraph,
The above reactor is,
A photocurable coating composition having high transparency and high water repellency, comprising at least one of a thiol and a methacrylate.
In the first paragraph,
A photocurable coating composition having high transparency and high water repellency, comprising a light transmittance of 90.6% or more and 90.7% or less.
A step of preparing a source composition from a first source comprising silane and a reactive group bonded to the silane;
A step of preparing a base coating composition by mixing the above source composition and a second source containing a perfluorinated group; and
A step of preparing a photocurable coating composition by mixing the base coating composition and a third source including a photocurable polymer material and a diluent; including,
In the step of preparing the above photo-curable coating composition, the base coating composition is:
A method for producing a photocurable coating composition having high transparency and high water repellency, comprising adding more than 3 parts and less than 6 parts based on the mixed weight % of the third source and the diluent.
In clause 5,
In the step of preparing the above source composition,
The above source composition is,
A method for producing a photocurable coating composition having a hyperbranched structure and having high transparency and high hydrophobicity.
In clause 5,
The step of preparing the above source composition is:
Comprising: preparing the source composition by mixing the first source and the plasticizer and heat-treating at a first temperature range in which methanol is formed as a by-product;
The above first temperature range is,
A method for producing a photocurable coating composition having high transparency and high water repellency, comprising a temperature of 100°C or higher and 160°C or lower.
In clause 5,
The step of preparing the above base coating composition is:
Including preparing the base coating composition by mixing the source composition and the second source and a catalyst in a solvent having a second temperature range higher than room temperature,
The second source above is,
Added in an amount of 30 wt% or more to 50 wt% or less relative to the total weight of the base coating composition,
The above second temperature range is,
A method for producing a photocurable coating composition having high transparency and high water repellency, comprising a temperature of 40°C or higher and 50°C or lower.
In Article 8,
The step of preparing the above photo-curable coating composition comprises:
A method of producing a photocurable coating composition, comprising mixing the base coating composition, the third source, and the diluent,
A method for producing a photocurable coating composition having high transparency and high water repellency, wherein the third source and the diluent are mixed in an amount of 60 wt%:40 wt% based on the total weight of the third source and the diluent.
In Article 9,
When the above photo-curable coating composition is used for high transparency and high water repellency purposes,
In the step of preparing the above base coating composition, the second source,
A method for producing a photocurable coating composition having high transparency and high water repellency, added at 40 wt% relative to the total weight of the base coating composition.
delete delete In Article 9,
In the step of preparing the above source composition,
The first source comprises at least one of thiol and methacrylate in the reactor,
In the step of preparing the above base coating composition,
The second source comprises at least one of tridecafluorooctyl acrylate and perfluorodecanethiol,
The above solvent contains chloroform,
The above catalyst contains triethylamine,
In the step of manufacturing the above photo-curable coating composition,
The third source comprises a urethane oligomer as the photocurable polymer material,
A method for producing a photocurable coating composition having high transparency and high water repellency, wherein the diluent comprises hexanediol diacrylate.
A step of preparing a photocurable coating composition having high transparency and high water repellency according to Article 5; and
A method for forming a coating layer having high transparency and high water repellency, comprising the steps of providing the photocurable coating composition on a surface selected from a group of coating materials including glass and plastic, and photocuring the composition to form a coating layer having high transparency and high water repellency on the coating material.

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