KR102266500B1 - Glass coating composition and the manufacturing method for the same - Google Patents

Abstract

The present invention relates to a composition for glass coating. The composition for glass coating includes a thermosetting resin, a crosslinking agent, and a silane coupling agent. The composition for glass coating prevents coating from being peeled off for a long time after coating by improving adhesion during glass coating, prevents stains due to a high temperature, a humid environment or chemicals, maintains coating for a long time even after coating a bent part of a glass container where there is a bent, and prevents stains due to a high temperature, a humid environment, or chemicals.

Description

Glass coating composition and the manufacturing method for the same

The present invention relates to a composition for glass coating and a method for manufacturing the same, and specifically, by improving adhesion during glass coating, the coating does not peel off for a long time even after coating, staining is not caused by high temperature, humid environment or chemicals, and bending is not caused. The present invention relates to a composition for coating glass that can maintain the coating for a long period of time even after coating the curved portion of the existing glass container, and does not cause staining due to high temperature, humid environment, or chemicals, and a method for manufacturing the same.

Many glass coating compositions have been developed and applied to express specific colors and designs on glass products. Such a composition for coating glass has a problem of detachment or discoloration when used for a long period of time, and a technique for solving this problem is being developed. In addition, various additives such as pigments and UV blockers are added and used in glass coating compositions due to the tendency of consumers to place importance on design.

Korean Patent Registration No. 10-1286507 discloses a method for decorating laminated glass. Specifically, a pigment package composition comprising a first and second laminated glass substrate crosslinking type thermosetting resin, a crosslinking agent capable of crosslinking the thermosetting resin, and a pigment is disclosed.

The registered patent is a composition used for lamination of two glass substrates, and when used for a single layer coating, peeling occurred when used for a long period of time, and there was a disadvantage of being vulnerable to external environments such as high temperature, high humidity, and chemicals. In particular, there was a problem in that the coating is peeled off when used for a long time by coating the curved glass surface. In addition, when solid particles such as pigments are added to a single glass layer and coated on the glass surface, there is a problem in that the adhesion to the glass surface is greatly reduced.

The present invention was created to solve the problems in the prior art as described above, and by improving the adhesion during glass coating, the coating does not peel off for a long time even after coating, and there is no stain caused by high temperature, humid environment or chemicals. The present invention provides a composition for coating glass and a method for manufacturing the same, which can maintain coating for a long period of time even after coating the curved portion of a glass container in which there is a bending, and does not cause stains due to high temperature, humid environment, or chemicals, Its main object is to provide a glass container coated with a coating composition.

In order to achieve the above object, one aspect of the present invention provides a composition for coating glass. The composition for coating glass is a composition for coating glass including a thermosetting resin, a crosslinking agent, and a silane coupling agent.

In addition, the thermosetting resin may be selected from the group consisting of acrylic resins, polyesters, styrenic resins, polycarbonates, copolymers thereof, and combinations thereof.

In addition, the thermosetting resin may include 10 to 30 parts by weight of an acrylic resin and 20 to 70 parts by weight of a polyester based on 100 parts by weight of the total thermosetting resin.

In addition, the thermosetting resin may include 1 to 10 parts by weight of a styrene-based resin and 1 to 10 parts by weight of a polycarbonate based on 100 parts by weight of the total thermosetting resin.

In addition, the crosslinking agent may be selected from the group consisting of fully alkylated melamine-formaldehyde resins, partially alkylated, melamine-formaldehyde resins, highly imino melamine-formaldehyde resins, and combinations thereof. have.

In addition, the crosslinking agent may be melamine-formaldehyde having a formaldehyde/melamine ratio of 1.1 to 1.8 or less.

In addition, the silane coupling agent may be selected from the group consisting of an acryl group-containing silane coupling agent, an epoxy-containing silane coupling agent, and combinations thereof.

In addition, the weight ratio of the epoxy-containing silane coupling agent to the acrylic group-containing silane coupling agent may be 1:0.5 to 1:3 for a silane coupling agent.

Another aspect of the present invention in order to achieve the above object is a method for manufacturing a composition for coating glass. The method for preparing the composition for coating glass includes a base solution preparation step of preparing a base solution by mixing an organic solvent and water, a first solution preparation step of preparing a first solution by adding a thermosetting resin and a crosslinking agent to the base solution, the first A method for manufacturing a composition for glass coating comprising a second solution preparation step of preparing a second solution by rotating one solution and a third solution preparation step of preparing a third solution by administering a silane coupling agent to the second solution.

In addition, in the step of preparing the second solution, the second solution may be prepared by rotating the first solution 5 to 20 times per minute based on the central axis of the solution.

In addition, in the third solution preparation step, 0.4 to 1.1 parts by weight of the silane coupling agent per 1 L of the second solution and one rotation are administered based on 100 parts by weight of the total thermosetting resin, and the third solution can be prepared by rotating 5 to 20 times per minute. have.

In addition, the thermosetting resin may be selected from the group consisting of acrylic resins, polyesters, styrenic resins, polycarbonates, copolymers thereof, and combinations thereof.

In addition, the thermosetting resin may include 10 to 30 parts by weight of an acrylic resin and 20 to 70 parts by weight of a polyester based on 100 parts by weight of the total thermosetting resin.

In addition, the thermosetting resin may include 1 to 10 parts by weight of a styrene-based resin and 1 to 10 parts by weight of a polycarbonate based on 100 parts by weight of the total thermosetting resin.

In addition, the crosslinking agent may be selected from the group consisting of fully alkylated melamine-formaldehyde resins, partially alkylated, melamine-formaldehyde resins, highly imino melamine-formaldehyde resins, and combinations thereof. have.

In addition, the crosslinking agent may be melamine-formaldehyde having a formaldehyde/melamine ratio of 1.1 to 1.8 or less.

In addition, the silane coupling agent may be selected from the group consisting of an acryl group-containing silane coupling agent, an epoxy-containing silane coupling agent, and combinations thereof.

In addition, the weight ratio of the epoxy-containing silane coupling agent to the acrylic group-containing silane coupling agent may be 1:0.5 to 1:3 for a silane coupling agent.

Another aspect of the present invention to achieve the above object is a glass container. The glass container is a glass container coated with the composition for coating glass.

The composition for glass coating of the present invention improves the adhesion during glass coating, so that the coating does not peel off for a long time even after coating, and does not cause stains by high temperature, humid environment or chemicals. After that, the coating can be maintained for a long time, and there is an effect that there is no stain caused by high temperature, humid environment or chemicals.

1 is a photograph of coating glass having a curvature with a composition for glass coating according to Example 1 of the present invention.
2 is a photograph of coating glass having a curvature with the composition for glass coating according to Comparative Example 4 of the present invention.

Hereinafter, a glass coating composition and a manufacturing method thereof according to an embodiment of the present invention will be described in detail. Since the present invention may have various changes and may have various forms, specific embodiments will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

The glass coating composition of the present invention comprises a thermosetting resin, a crosslinking agent and a silane coupling agent. However, the composition may typically further comprise solvents, catalysts, surfactants, light stabilizers, UV blockers and pigments. Each component is described in turn below.

thermosetting resin

The thermosetting resin may be 50 to 85 parts by weight, preferably 55 to 80 parts by weight, more preferably 60 to 75 parts by weight, and most preferably 60 to 65% by weight based on 100 parts by weight of the total glass coating composition.

The thermosetting resin is a polymer having a crosslinking type functional site. Suitable types of thermosetting resins may include acrylic resins, polyesters, styrenic resins, polycarbonates, copolymers thereof, and combinations thereof.

Examples of the acrylic resin include methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, Lauryl methacrylate, methyl methacrylate, ethyl methacrylate, t-butyl methacrylate, macro nitrile, methcronitrile, cyclohexyl methacrylate, acrylic acid, taacrylic acid, hydroxyl methacrylate, hydroxyl ethyl acrylate, hydroxyl propyl methacrylate, and hydroxyl propyl acrylate.

The polyester resin may be prepared by thermal polycondensation in the presence of a catalyst or a mixture of a polybasic acid and a polyhydric alcohol (polyol). Examples of acids that form alkyd resins or reactive polyesters include adipic acid, glutaric acid, succinic acid, azelaic acid, sebacic acid, terephthalic acid, phthalic anhydride and the like. Examples of polybasic alcohols include ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, glycerin, butylene glycol, 2,2-dimethyl-1,3-propanediol, trimethylol propane, 1,4-cyclohexane dimethanol, pentaerythritol, trimethylolethane, and the like.

The polyester resin may have a number average molecular weight of 2000 to 8000 g/mol. Mixability and adhesion to the substrate may be excellent in the above range. In addition, the polyester resin may have an acid value of 10 to 50 mgKOH/g. Under the above conditions, chemical resistance, miscibility, and adhesion to a substrate may be excellent.

Since the acrylic resin and the polyester resin have a carboxyl group (-COOR) capable of crosslinking, a network structure supporting the coating can be formed during glass coating and adhesion with the glass can be improved. The content of the acrylic resin and the polyester resin may be 10 to 30 parts by weight of the acrylic resin and 20 to 70 parts by weight of the polyester based on 100 parts by weight of the total thermosetting resin. If it is outside the lower limit of the range, the glass coating may peel off, and if it is out of the upper limit, a significant increase in effect cannot be obtained. The acrylic resin and the polyester resin may have a hydroxyl equivalent of 400 to 1000, preferably 500 to 820.

The styrene-based resin and the polycarbonate may impart ductility to the acrylic resin and the polyester resin, thereby preventing peeling or cracking of the coating during coating of curved glass. The content of the styrene-based resin and the polycarbonate may be 1 to 10 parts by weight of the styrene-based resin and 1 to 10 parts by weight of the polycarbonate based on 100 parts by weight of the total thermosetting resin. If it is outside the lower limit of the above range, the coating may be peeled off or broken during coating of curved glass, and if it is out of the upper limit, a significant increase in effect cannot be obtained. The acrylic resin and the polyester resin may have a hydroxyl equivalent of 400 to 1000, preferably 500 to 820.

The styrene-based resin is polystyrene (PS), styrene-acrylonitrile (SAN), acrylonitrile-butadiene-styrene (ABS), acrylonitrile-chlorinated polyethylene-styrene (ACS), acrylonitrile-styrene-acrylic ester (AXS) and derivatives thereof may be one or more selected from the group consisting of compounds.

crosslinking agent

The crosslinking agent forms a crosslink with the thermosetting resin. The density of crosslinks determines the strength of the coating that is applied to the glass. Here, the glass coating composition may include 24 to 37 parts by weight of the crosslinking agent based on 100 parts by weight of the total thermosetting resin. The crosslinking agent may be selected from the group consisting of fully alkylated melamine-formaldehyde resins, partially alkylated melamine-formaldehyde resins, highly imino melamine-formaldehyde resins, and combinations thereof.

The highly alkylated melamine-formaldehyde resin may be, for example, hexamethoxymethylmelamine available under the trade names Cymel 301, Cymel 303, Cymel 385 (methoxymethyl methylol melamine). In addition, Cymel 401, Cymel 405LD, Cymel 406, Cymel 412, Cymel 481, Cymel 483, Cymel WE-1025D, and Cymel 9800, which are melamine formaldehyde resins, may be used. Partially alkylated melamine-formaldehyde resins are also suitable.

The crosslinking agent may be melamine-formaldehyde having a formaldehyde/melamine ratio of 1.1 to 1.8 or less. When it is lower than the lower limit, the content of melamine is high, but the content of formaldehyde is low, so storage stability can be reduced, and when it is higher than the upper limit, the content of formaldehyde is high and unnecessary formaldehyde can be emitted.

Silane coupling agent

The silane coupling agent may be selected from the group consisting of an acryl group-containing silane coupling agent, an epoxy-containing silane coupling agent, and combinations thereof. The silane coupling agent is used for the purpose of enhancing miscibility and adhesion to a glass substrate when mixing the resin component of the present invention with components such as a metal mixture and a functional component.

The weight ratio of the epoxy-containing silane coupling agent to the acrylic group-containing silane coupling agent (acrylic group-containing silane coupling agent: epoxy-containing silane coupling agent) is 1: 0.5 to 3, preferably 1: 0.7 to 2.5 Preference is given to using a phosphorus silane coupling agent. When the weight ratio is lower than 1: 0.5, the content of the epoxy-containing silane coupling agent is small, so the adhesion to the glass substrate may be weak. When the weight ratio is greater than 1: 3, the content of the epoxy-containing silane coupling agent is large. The coating may peel off or break after coating of glass where there is a curvature.

In one embodiment, the silane coupling agent may be selected from the group consisting of an acryl group-containing silane coupling agent, an epoxy-containing silane coupling agent, and combinations thereof. The epoxy-containing silanes include 2-(3,4-epoxycyclohexyl)-ethyltrimethoxysilane, 3-glycidoxytrimethoxysilane, 3-glycidoxypropyltrimethoxysilane and 3-glyc doxypropyltriethoxysilane; and the like. The acrylic group-containing silane coupling agent is 3-methacrylpropyltrimethoxysilane, 3-methacrylpropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, etc. can be applied.

The silane coupling agent is included in an amount of 0.4 to 1.1 parts by weight based on 100 parts by weight of the thermosetting resin. When the silane coupling agent is included in less than 0.4 parts by weight, adhesion with the glass substrate is reduced, and the compatibility and miscibility of the glass coating composition are lowered to lower mechanical strength such as durability, and when it contains more than 1.1 parts by weight, the above The corrosion resistance and durability of the glass coating composition may be reduced.

pigment

A pigment can be essentially any organic or inorganic colorant, pigment, or dye that can be used to impart color or opacity to glass. 2 to 20 parts by weight of the at least one pigment, preferably 5 to 15% by weight, more preferably 7 to 10% by weight. Black, dark or opacifying pigments may be used to form opaque shading blocking on the edges of the glass, for aesthetic purposes, protection purposes, or both.

Suitable pigments are conventional pigments including carbon black, iron pigments, cobalt pigments, cadmium pigments, chromium pigments, copper mercury pigments, titanium pigments, zinc pigments, lead pigments, magnesium pigments, manganese pigments and vanadium pigments. Other suitable inorganic pigments include carbon black, TiO ₂ , Fe ₂ O ₃ , Fe ₃ O ₄ , V ₂ O ₅ , CoO-Al ₂ O ₃ -TiO ₂ -Cr ₂ O ₃ , CoO-Al ₂ O ₃ , CeO ₂ , ZrO ₂ , ZnO, magnesium ferrite, mercury sulfide, cadmium sulfoselenide, molybdenum chromate, zircon, copper chromium black, iron nickel manganese chromium black, cobalt aluminate blue, zinc iron chromium brown, iron cobalt chromium, chromium oxide green, chrome yellow, and moly-orange.

Organic dyes may be suitable as pigments. Useful dyes include cyanine dyes; phthalocyanine dyes such as phthalocyanine blue and phthalocyanine green; azo dyes such as diazo yellow; polycyclic quinone dyes such as anthraquinone or dibromoanthraquinone; dioxane dyes such as dioxane violet; stilbene dyes, coumarin dyes, naphthalimide dyes, pyridine dyes, rhodamine dyes and oxazine dyes.

Examples of the stilbene dye are 1,4-bis(2-methylstyryl)benzene, trans-4,4'-diphenylstilbene, and the like. Examples of coumarin dyes include 7-hydroxy-4-methylcoumarin; 2,3,5,6-1H,4H-tetrahydro-8-trifluoromethylquinolizino(9,9a,1-gh)coumarin; 3-(2'-benzothiazolyl)-7-diethylaminocoumarin; and 3-(2'-benzylimidazolyl)-7-N,N-diethylaminocoumarin. Examples of rhodamine dyes are 2-(6-(diethylamino)-3-(diethylimino)-3H-xanthen-9-yl)benzenecarboxylic acid, rhodamine B and rhodamine 6G and the like. An example of a cyanine dye is 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostylyl)-4H-pyran. An example of a pyridine dye is 1-ethyl-2-(4-(p-dimethylaminophenyl)-1,3-butadienyl)-pyridium-perchlorate.

menstruum

Examples of the solvent include glycols such as ethylene glycol, propylene glycol and hexylene glycol; alpha- or beta-terpinol; high boiling point alcohols such as diethylene glycol monoethyl ether; butyl diethylene glycol monobutyl ether; dibutyl diethylene glycol dibutyl ether); butyl acetate (diethylene glycol monobutyl ether acetate); 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate) and other alcohol esters, kerosene, dibutyl phthalate, and the like.

additive

In another embodiment of the present invention, the anticorrosive coating composition may further include an additive. In one embodiment, the additive may include one or more of a dispersing agent, a thixotropic agent, a curing accelerator, a plasticizer, an antifoaming agent, a thickener, an anti-settling agent, an antioxidant, a light stabilizer, a wetting agent, and a polymerization agent.

Hereinafter, preferred synthesis examples, examples, comparative examples, and experimental examples are presented to help the understanding of the present invention, but the following examples are only illustrative of the present invention and the scope of the present invention is not limited to the following examples.

[Example 1]

As an organic solvent, 3 g of propylene glycol methyl ether, 8 g of 2-butoxyethanol, 12 g of isobutanol, and 45 g of water were mixed to prepare a base solution. In the base solution, 12 g of acrylic resin, 23 g of polyester, and styrene-based resin were used as thermosetting resins. A first solution was prepared by adding 4 g of acrylonitrile-butadiene-styrene (ABS) and 3 g of polycarbonate and 5 g of Cymel 303 as a crosslinking agent.

A second solution was prepared by rotating the first solution 5 to 20 times per minute based on the central axis of the first solution in a stirrer capable of rotating. If the number of rotations is lower than the lower limit, it takes a long time to prepare the second solution and is inefficient, and if it is higher than the upper limit, the solution may partially solidify, so that the surface may not be flat during glass coating.

A third solution was prepared by adding 0.3 g of a silane coupling agent to the second solution. As the silane coupling agent, a silane coupling agent having a weight ratio of the epoxy-containing silane coupling agent to the acrylic group-containing silane coupling agent of 1:1.5 was used. As the acryl group-containing silane coupling agent, 3-methacrylpropyltrimethoxysilane was used. As the epoxy-containing silane coupling agent, 3-glycidoxypropyltrimethoxysilane was used.

A composition for glass coating was prepared by adding diazo yellow as a pigment to the third solution.

[Examples 2 to 3 and Comparative Examples 1 to 3]

By changing the content in Example 1 to the content in Table 1 below, a composition for glass coating was prepared.

[Table 1]

[Experimental Examples 1 to 7]

The compositions for glass coating of Examples 2 to 3 and Comparative Examples 1 to 3 were uniformly coated on a curved glass container to a thickness of 3 μm by spray coating, and then cured at a temperature of 100 to 300° C. After the physical properties test, the results are shown in Table 1. Here, each property evaluation method is as follows.

(1) Appearance: It was observed whether there was any haze on the appearance of the coated film.

(2) Crack properties: After maintaining the coated film at a constant temperature/humidity condition of 35° C. and a relative humidity of 80% for 30 days, it was observed whether the appearance of the coated film had any cracks.

(3) Adhesiveness: After 100/100 1mm cross cut, taping with 3M (No. 710) tape, peeling was observed. In this case, good indicates a state in which the coating film is not detached from the tape, and bad indicates a state in which the coating film is peeled off due to detachment.

(4) Pencil hardness: For each hardness, a pencil was inserted into the device at a 45 degree angle, and the pencil was drawn on the coating film under a load of 1 kg to confirm the evaluation. Draw 5 lines, and if 3 or more are good, it indicates that the pencil hardness is satisfied.

(5) Storage properties: The prepared coating solution was sampled in a 60ml container and stored in an oven at 60°C to observe the change over time. It was judged that the stability of about 6 months at room temperature after 3 days at 60°C was exhibited, and the storage standard was judged to be excellent in liquid stability when it showed at least 3 days at 60°C.

(6) Salt water resistance: After immersion in 5% NaCl aqueous solution at room temperature for 24 hours, the state of the coating film was observed. In this case, good indicates a state in which there is no peeling of the coating film, and bad indicates a state in which peeling of the coating film occurs.

(7) Boiling water resistance: After immersion in 100℃ boiling water for 60 minutes, the presence and degree of wrinkles, cracks, swelling, peeling, reduction of gloss, cloudiness, whitening, discoloration, etc. were observed on the coating film. After observation, 100/100 1mm cross cut was performed, and peeling was observed after taping with 3M (No. 710) tape. In this case, good indicates a state in which the coating film is not detached from the tape, and bad indicates a state in which the coating film is peeled off due to detachment.

[Table 2] Test item evaluation result

(◎: Excellent, ○: Good, △: Poor, ×: Poor)

As shown in Table 2, the physical properties of Experimental Examples 1 to 4 using the composition for glass coating were satisfactory results in required appearance, cracking properties, adhesion, pencil hardness, storage, salt water resistance and boiling water resistance. It has been confirmed to have In particular, as can be seen from the photos of FIG. 1 of Example and FIG. 2 of Comparative Example 3, it was confirmed that peeling or breaking cracks did not occur when coated on curved glass using the composition for glass coating of the present invention.

On the other hand, in Comparative Example 1, it can be seen that the content of the acrylic resin is less than 10 parts by weight of the acrylic resin based on 100 parts by weight of the total thermosetting resin, and the crack and salt water resistance are reduced.

In addition, in Comparative Example 2, it can be seen that the acrylic resin content is greater than 30 parts by weight of the acrylic resin with respect to 100 parts by weight of the total thermosetting resin, and cracking properties are reduced.

Although described with reference to the preferred embodiments and experimental examples of the present invention as described above, those skilled in the art can make the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. It will be understood that various modifications and changes can be made.

Claims (19)

delete delete delete delete delete delete delete delete a base solution preparation step of preparing a base solution by mixing an organic solvent and water;
A first solution preparation step of preparing a first solution by adding a thermosetting resin and a crosslinking agent to the base solution;
A second solution preparation step of preparing a second solution by rotating the first solution, and
In the method for preparing a composition for glass coating comprising a third solution preparation step of preparing a third solution by administering a silane coupling agent to the second solution,
In the step of preparing the second solution, the second solution is prepared by rotating the first solution 5 to 20 times per minute based on the central axis of the solution,
In the third solution preparation step, 0.4 to 1.1 parts by weight of the silane coupling agent per 1 L of the second solution and one rotation are administered based on 100 parts by weight of the total thermosetting resin, and the third solution is prepared by rotating 5 to 20 times per minute,
The thermosetting resin contains 25 to 30 parts by weight of an acrylic resin, 40 to 50 parts by weight of a polyester, 5 to 10 parts by weight of a styrene resin, and 5 to 10 parts by weight of a polycarbonate based on 100 parts by weight of the total thermosetting resin,
the crosslinking agent is selected from the group consisting of fully alkylated melamine-formaldehyde resins, partially alkylated, melamine-formaldehyde resins, highly imino melamine-formaldehyde resins, and combinations thereof;
The crosslinking agent is melamine-formaldehyde having a formaldehyde/melamine ratio of 1.1 to 1.8 or less,
The silane coupling agent consists of a combination of an acryl group-containing silane coupling agent and an epoxy-containing silane coupling agent,
The method of claim 1, wherein the weight ratio of the epoxy-containing silane coupling agent to the acryl group-containing silane coupling agent is a silane coupling agent of 1:0.5 to 1:3.
delete delete delete delete delete delete delete delete delete A glass container coated with the composition for glass coating prepared by the method of claim 9 .

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