JP2006219607A - Water-based edge coating liquid for mirror and mirror using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an edge coating liquid for mirror used for coating the edge of mirror whose metallic protective film is exposed, capable of carrying out curing in a short time and facilitating formation of coating of mirror edge part regardless of water-based coating liquid, in production of the mirror in which a silver mirror film, the metal protective film composed of copper, etc., for protecting the silver mirror film and a back coating film are successively laminated onto a glass substrate and to provide the mirror using the coating liquid. <P>SOLUTION: The water-based edge coating liquid comprises an acrylsilicone resin emulsion obtained by dispersing an acrylsilicone resin into water. In the coating liquid, the acrylsilicone resin is especially preferably an acylsilicone resin emulsion obtained by carrying out emulsion polymerization of only silicon-containing acrylic monomer or an acylsilicone resin emulsion obtained by carrying out emulsion polymerization of a silicon-containing acrylic monomer and a monomer not containing silicon. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a silver mirror film on a glass substrate, a metal protective film made of copper or the like for protecting the silver mirror film, a mirror in which a backing coating film made of a rust preventive paint is sequentially laminated, or a silver mirror film on a glass substrate. Concerning mirrors in which back coating films made of rust paint are sequentially laminated, the film formation for coating the silver mirror film on the edge of the mirror, rust prevention of the exposed part of the metal protective film, and corrosion prevention from the edge of the mirror The present invention relates to a mirror edge coating liquid to be performed, and a mirror on which a coating film for coating the edge by coating the mirror edge coating liquid is formed.

  In the manufacture of mirrors, when forming a film covering the exposed part of the silver mirror film or copper film on the edge of the mirror, after chamfering the edge including the backing film, the edge coating liquid is applied to the edge. It is known to form a film by coating and drying, and the film formation by these coatings is usually performed manually in a mirror or a mirror processing factory. A coating formed by applying and drying an edge coating liquid as a rust preventive paint prevents discoloration due to rust and peeling from the mirror end, in other words, erosion is prevented, and an anticorrosive effect is obtained.

  Conventionally, solid wax is rubbed against the edge of a mirror, or an edge coating liquid composed of a resin and a solvent, for example, an edge coating liquid obtained by dissolving an alkyd resin in an aromatic hydrocarbon solvent is applied with a brush or the like. However, in all cases, the film thickness was too thin or drowned and did not reach the exposed metal part sufficiently.

  For example, Patent Document 1 by the present applicant discloses a mirror edge coating liquid that can be easily edge-coated by conventional manual operation, has excellent quick-drying properties, and has anti-corrosion properties.

  The mirror edge coating liquid disclosed in Patent Document 1 is a first solvent selected from 30 to 40% by weight of a vehicle selected from a solvent volatile corrosion-resistant resin or a moisture-curable corrosion-resistant resin and an alkyl acetate ester. Of 20 to 50% by weight and alkylbenzenes or aliphatic ketones, the second solvent is mixed with 20 to 40% by weight, and the coating solution viscosity is adjusted to be in the range of 25 to 40 centipoise. In addition, Patent Document 1 by the present applicant describes a pen-type edge coating tool for a mirror edge coating liquid.

Japanese Patent Laid-Open No. 9-313316

  Conventionally, the mirror rim coating liquid that has been used uses an organic solvent. However, when an organic solvent is used in the mirror rim coating liquid, especially when an aromatic hydrocarbon organic solvent is used, there is a concern that a fire may occur due to caution in storage and handling and flammability. Since it is toxic to the human body, there are problems such as inhalation by workers due to volatilization during application work, and health problems, and air pollution.

  There is no such problem when using an aqueous rim coating liquid, but it takes time to dry, so there is a problem that it is difficult to apply to the edge of a mirror. It is not done.

  The present invention relates to a silver mirror film on a glass substrate, a metal protective film made of copper or the like for protecting the silver mirror film, a mirror in which a back coating film is sequentially laminated, or a silver mirror film or a metal protective film on a glass substrate. In the manufacture of mirrors in which back coating films are laminated in sequence, the coating of the mirror edge part is completed in order to cover the edge of the mirror where the metal protective film is exposed. An object of the present invention is to provide an edge coating liquid for mirrors and a mirror using the same.

  In addition, the present invention is a water-based aqueous solution having a strong anticorrosion effect over a long period of time, having a strong adhesion to a glass protective film made of glass at the edge of a glass substrate, a silver mirror film, a copper protective film, and a backing coating film. An object of the present invention is to provide a mirror edge coating liquid and a mirror using the same.

  In the present invention, an acrylic silicon resin emulsion resin is used as a mirror rim coating liquid, so that it can be cured in a short time while being water-based, and it is easy to form a coating on the mirror edge, and the glass surface of the glass substrate edge. Thus, a mirror edge coating solution that adheres firmly to a silver mirror film, a metal protective film made of copper or the like, and a backing coating film and that quickly dries was obtained. The mirror obtained by using the mirror edge coating liquid of the present invention is excellent in corrosion resistance and has an excellent anticorrosive effect over a long period of time.

  That is, the present invention is an aqueous mirror rim coating liquid containing an acrylic silicon resin emulsion obtained by dispersing an acrylic silicon resin in water.

  Furthermore, the present invention provides an acrylic silicon resin emulsion obtained by emulsion polymerization of only the silicon-containing acrylic monomer with the acrylic silicon resin, or a silicon-containing acrylic monomer and another monomer not containing silicon. It is an acrylic silicone resin emulsion obtained by emulsion polymerization of the above-mentioned aqueous mirror rim coating liquid.

  Furthermore, the present invention provides the above-described aqueous mirror rim coating liquid, wherein the composition of the acrylic silicon resin is cyclohexyl methacrylate, butyl acrylate, methyl methacrylate and butyl methacrylate, and a silicon monomer. is there.

  Furthermore, the present invention is a method of laminating a silver mirror film, a metal protective film, and a backing coating film on a glass substrate in order, and then applying the above-mentioned aqueous mirror rim coating liquid to the edge of the peripheral edge of the glass substrate, followed by drying. A mirror having a hardened film.

  The water-based mirror edge coating liquid of the present invention is a water-based mirror edge coating liquid compared to a conventional mirror edge coating liquid using an organic solvent. Silver mirror film, metal protective film made of copper, etc., manufacture of mirrors that sequentially laminate a backing coating film, or manufacture of mirrors that sequentially laminate silver mirror film, backing coating film on a glass substrate, exposure of the metal protective film When forming a film for covering the edge of the mirror, there is no problem that workers injure health by inhalation, and there is no problem of environmental pollution.

  In addition, the aqueous mirror coating liquid of the present invention is water-based and can be cured in a short time, and can easily form a coating film on the edge of the mirror. When the edge is coated, the glass surface of the edge of the glass substrate, a silver mirror film, a metal protective film made of copper or the like, a backing coating film, and firmly adhere.

  By applying the aqueous mirror rim coating liquid according to the present invention to a mirror, a mirror having an excellent anticorrosive effect over a long period of time was obtained.

  FIG. 1 is a cross-sectional view of an example of a mirror in which a mirror edge coating liquid is applied and a film is formed on an edge. As shown in FIG. 1, the mirror is a mirror in which a silver mirror film 1, a metal protective film 2 made of copper or the like for protecting the silver mirror film 1, and a backing coating film 3 are sequentially laminated on a glass substrate G. A coating 4 for drying and curing after applying the edge coating liquid is formed on the mirror edge.

  At present, a mirror in which a silver mirror film 1, a metal protective film 2 made of copper or the like for protecting the silver mirror film 1, and a back coating film 3 are sequentially laminated on the glass substrate G is mainly used. In the future, there is no metal protective film 2 made of copper or the like for protecting the silver mirror film 1 for environmental protection due to improvement of the corrosion resistance of the silver mirror film 1 by the film 3, and the silver mirror film on the glass substrate G. 1. It is expected that the mirror will be replaced with the back coating film 3 sequentially laminated. In order to give the silver mirror film 1 excellent corrosion resistance when the mirror edge coating liquid of the present invention is used as the coating film 4, it has a metal protective film 2 made of copper or the like in which the silver mirror film 1 and the back coating film 3 are sequentially laminated. It is also effective for mirrors that do not.

  In the present invention, the silver mirror film 1 refers to a silver film or a reflective film similar to the silver film that exhibits a mirror action. Usually, in order to protect the silver mirror film 1 from erosion, a metal protective film 2, for example, a copper film is applied thereon. These silver mirror film 1 and metal protective film 2 are usually formed by a chemical plating method, but not limited to this, other film forming methods such as physical vapor deposition and sputtering are employed.

  The silver mirror film 1 and the metal protective film 2 are gradually corroded and corroded by a corrosive gas such as moisture, carbon dioxide gas or sulfurous acid gas, and corrode from the edge. Accordingly, the metal protective film 2 is coated with a back coating film 3 that is applied with a back coating and dried to prevent erosion, in other words, to prevent corrosion. Usually, a coating 4 for anticorrosion is formed on the inclined portion 5 which is thread chamfered and the mirror mirror film 1 and the metal protective film 2 are exposed, and is dried after the mirror edge coating liquid is applied.

  The aqueous mirror edge coating liquid of the present invention contains an acrylic silicone resin emulsion.

  Candidates for water-soluble resins used in water-based mirror coating liquids include polyvinyl alcohol, polyacrylamide, water-soluble acrylic polymers, water-soluble urethane polymers, water-soluble fluororesins, etc., and emulsions are acrylic resins Emulsion, acrylic silicon resin emulsion, urethane resin emulsion, fluororesin emulsion, styrene butadiene resin emulsion, acrylonitrile butadiene resin emulsion, styrene isoprene resin emulsion, vinyl chloride resin emulsion, ethylene vinyl acetate resin emulsion, ethylene vinyl chloride resin emulsion and natural rubber emulsion Etc.

  Among these, as the emulsion used in the mirror edge coating liquid of the present invention, the coating after curing is fast and the coating of the mirror edge can be easily formed. Acrylic silicon resin emulsion is selected because of the high durability and chemical resistance of the coating film 4 and the high degree of freedom in resin design when polymerizing the resin for obtaining an excellent coating film 4. An acrylic silicon resin emulsion obtained by emulsion polymerization of only an acrylic monomer, or an acrylic silicon resin emulsion obtained by emulsion polymerization of a silicon-containing acrylic monomer and another monomer not containing silicon Are preferably used.

  Examples of the silicon-containing acrylic monomer include γ- (meth) acryloxypropyltrimethoxysilane, γ- (meth) acryloxypropyltriethoxysilane, γ- (meth) acryloxypropylmethyldimethoxysilane, γ- ( Examples include hydrolyzable silyl group-containing vinyl monomers such as (meth) acryloxypropylmethyldiethoxysilane.

  Examples of the other monomer that does not contain silicon copolymerizable with the acrylic monomer include aromatic hydrocarbon vinyl monomers such as styrene, methylstyrene, chlorostyrene, and vinyltoluene; maleic acid, itaconic acid , Crotonic acid, fumaric acid, α, β-ethylenically unsaturated carboxylic acids such as citraconic acid; sulfonic acid-containing vinyl monomers such as styrene sulfonic acid and vinyl sulfonic acid; acid anhydrides such as maleic anhydride and itaconic anhydride Products; chlorine-containing monomers such as vinyl chloride, vinylidene chloride and chloroprene; hydroxyl-containing alkyl vinyl ethers such as hydroxyethyl vinyl ether and hydroxypropyl vinyl ether; alkylene glycols such as ethylene glycol monoallyl ether and propylene glycol monoallyl ether diethylene glycol monoallyl ether Α-olefins such as ethylene, propylene and isobutylene; vinyl esters such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl pivalate; vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, butyl vinyl ether and cyclohexyl vinyl ether; ethyl Examples include allyl ethers such as allyl ether and butyl allyl ether.

  The acrylic resin emulsion is obtained by, for example, an emulsion polymerization method. There is no particular limitation on the method of emulsion polymerization, and the above-mentioned monomers, chain transfer agents, surfactants, radical polymerization initiators and other additions used as necessary in an aqueous medium by a conventionally known method In a dispersion system having an agent component as a basic composition component, a monomer is polymerized to produce an emulsion.

  Examples of other additive components used as necessary include alkoxysilane and / or organoalkoxysilane. Specific examples include tetraalkoxysilanes such as tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-i-propoxysilane, tetra-n-butoxysilane; methyltrimethoxysilane, methyltriethoxysilane, Ethyltrimethoxysilane, ethyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, i-propyltrimethoxysilane, i-propyltriethoxysilane, n-butyltrimethoxysilane, n-butyltriethoxy Silane, n-pentyltrimethoxysilane, n-hexyltrimethoxysilane, n-heptyltrimethoxysilane, n-octyltrimethoxysilane, vinyltrimethoxysilane, cyclohexyltrimethoxysilane, cyclohexyl Rutriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 2-hydroxyethyltrimethoxysilane, 2-hydroxyethyltriethoxysilane, 2-hydroxypropyl Trimethoxysilane, 3-hydroxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-isocyanatopropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, 3-glycid Xylpropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4-epoxy Trialkoxysilanes such as (cyclocyclohexyl) ethyltriethoxysilane; dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, di-n-propyldimethoxysilane, di-n-propyldiethoxysilane, di -I-propyldimethoxysilane, di-i-propyldiethoxysilane, di-n-butyldimethoxysilane, di-n-butyldiethoxysilane, di-n-pentyldimethoxysilane, di-n-pentyldiethoxysilane, Di-n-hexyldimethoxysilane, di-n-hexyldiethoxysilane, di-n-heptyldimethoxysilane, di-n-heptyldiethoxysilane, di-n-octyldimethoxysilane, di-n-octyldiethoxysilane Di-n-cyclohexyl Examples include dialkoxysilanes such as rudimethoxysilane, di-n-cyclohexyldiethoxysilane, diphenyldimethoxysilane, and diphenyldiethoxysilane; monoalkoxysilanes such as trimethylmethoxysilane and trimethylethoxysilane. These alkoxysilanes and / or organoalkoxysilanes are used alone or in admixture of two or more.

  The acrylic silicone resin contained in the aqueous mirror rim coating liquid of the present invention is composed of cyclohexyl methacrylate, butyl acrylate, methyl methacrylate and butyl methacrylate, and the silicon-containing acrylic monomer. It is a silicon monomer that is a monomer or a monomer that does not contain silicon, and it is preferable to use all of them as constituent monomers. Polymerization of the acrylic silicone resin emulsion is easy to perform, and it is easy to apply when it is made into an aqueous mirror rim coating solution, and the resulting anticorrosive mirror has an excellent anticorrosive effect.

  The acrylic silicone resin emulsion contained in the aqueous mirror rim coating liquid of the present invention has a number average molecular weight in terms of polystyrene by GPC (gel permeation chromatography) of 10,000 or more and 5,000,000 or less. It is preferable. More preferably, they are 50,000 or more and 1,000,000 or less. If the number average molecular weight is less than 10,000, the film 4 after drying and curing is brittle and not only peels easily but also cannot provide an anticorrosive effect. If the number average molecular weight exceeds 5,000,000, the viscosity becomes too high. 4 is difficult to form.

  The upper limit of the concentration of the acrylic silicone resin in the aqueous mirror edge coating liquid of the present invention is preferably 45.0% by weight or less based on the total weight of the aqueous mirror edge coating liquid as 100%. In order to apply the aqueous rim coating liquid of the present invention, a known pen type rim coater manufactured by Felt is preferably used. When using a brush or the like, it may be thick, but when using a pen-type rim coater, if the concentration of the acrylic silicone resin is higher than 45.0% by weight, the acrylic silicone resin will spread evenly. It is difficult to obtain a coating 4 having a uniform thickness after application. Preferably it is 43.0 weight% or less. Further, the lower limit of the concentration of the acrylic silicone resin in the aqueous mirror edge coating liquid of the present invention is preferably 10.0% by weight or more based on the total weight of the aqueous mirror edge coating liquid as 100%. When the concentration of the acrylic silicon resin is less than 10.0% by weight, the thickness of the coating film 4 necessary for corrosion resistance of the exposed metal parts such as the silver mirror film 1 and the copper film 2 cannot be obtained.

  In the aqueous mirror rim coating liquid of the present invention, the glass transition temperature (hereinafter abbreviated as Tg) of the acrylic silicone resin used as an emulsion by dispersing in water is preferably 0 ° C. or higher and 80 ° C. or lower, More preferably, it is the range of 20 degreeC or more and 80 degrees C or less. When the glass transition temperature of the acrylic silicone resin is less than 20 ° C., the tackiness tends to develop and harden, in other words, it becomes easy to block, and when it exceeds 80 ° C., the edge coating liquid is applied to the mirror edge and dried and cured. Cracks are likely to occur in the coating 4.

  In the mirror edge coating liquid of the present invention, an acrylic silicon resin having a number average particle diameter of 30 nm or more and 800 nm or less, preferably 50 nm or more and 400 nm or less when dispersed in water is suitably used. When the number average particle diameter when dispersed in water is less than 30 nm, the viscosity of the mirror coating liquid is too high, and the smooth coating 4 cannot be obtained. When the number average particle diameter exceeds 800 nm, the coating film 4 is coated with a mirror rim coating liquid, and then the quick-drying property of the coating film 4 is inferior and the drying and curing are slow.

  In the aqueous mirror rim coating liquid of the present invention, water is appropriately added to the water-soluble resin, and in order to improve the workability at the time of coating and the finished appearance after coating, a defoaming agent, a thickener, an antifungal agent, Additives usually used in water-based paints such as antiseptics, antibacterial agents, ultraviolet absorbers, light stabilizers, leveling agents, slip agents, anti-sagging agents, antioxidants and heat stabilizers may be blended.

  The mirror edge coating liquid of the present invention obtained by appropriately adding water, a film-forming aid, a leveling agent, and an antifoaming agent to the acrylic silicon resin emulsion is rolled onto the inclined portion 5 at the edge of the mirror back surface that has been chamfered. It is applied by a coater, brush coating or the like so that the dry film thickness is 10 μm or more and 250 μm or less. Further, this is accelerated dried at 80 ° C. or lower, preferably dried at room temperature, to form a film 4, and the mirror edge is coated to complete the anticorrosion mirror.

  As shown in FIG. 1, a large mirror having a thickness of 5 mm is formed by sequentially laminating a silver mirror film 1, a copper film as a metal protective film 2, and a back coating film 3 on one side of a glass substrate G by known means. Then, after cutting this into 200 mm square and seaming the edge, the coating described in Patent Document 1 by the present applicant is applied to the inclined portion 5 where the silver mirror film 1 and the copper film 2 are exposed. Using a known pen-type rim coater made of felt, an aqueous mirror rim coating liquid was applied manually. Table 1 shows the composition of the applied aqueous mirror coating liquid.

  In addition, the numerical value of Table 1 was represented by weight%, and each aqueous coating liquid for mirrors was prepared so that it might become 100.0 weight% in total.

    As the aqueous mirror coating liquid of Example 1, TG, 20 ° C. acrylic silicone resin emulsion (manufactured by Asahi Kasei Chemicals Co., Ltd., trade name, Polydurex G623, nonvolatile content prepared with water to 46.0% by weight) is used. The total amount of the aqueous mirror coating solution was 70.0% by weight. The aqueous mirror coating liquid of Example 2 uses TG, 50 ° C. acrylic silicone resin emulsion (manufactured by Toa Gosei Chemical Co., Ltd., trade name, Cirrus PC100, non-volatile content adjusted to 46.0% by weight), water-based It was prepared to be 70.0% by weight with respect to the total weight of the mirror coating liquid. The aqueous mirror coating liquid of Example 3 is TG, 20 ° C. acrylic silicone resin emulsion (manufactured by Asahi Kasei Chemicals Corporation, trade name, Polydurex G620, non-volatile content adjusted to 46.0 wt%) and silane monomer ( Toray Dow Corning Silicon Co., Ltd., trade name, SH6040) was added so as to be 70.0% by weight based on the total weight of the aqueous mirror coating liquid. The concentration of the acrylic silicone resin in the aqueous mirror rim coating liquid shown in Example 1 and Example 2 is 32.2% based on the total weight of the aqueous mirror rim coating liquid as 100%. The concentration of the acrylic silicone resin shown in Example 3 is 25.8% based on 100% of the total weight of the aqueous mirror edge coating liquid.

  On the other hand, the aqueous mirror coating liquid of Comparative Example 1 uses an acrylic resin emulsion (manufactured by Mitsui Chemicals, trade name, Armatex E293, non-volatile content adjusted to 43.0% by weight) and an aqueous mirror. It prepared so that it might become 80.0 weight% with respect to the edge coating liquid total weight. The aqueous mirror coating liquid of Comparative Example 2 uses a urethane resin emulsion (manufactured by Dainippon Ink & Chemicals, Inc., trade name, Boncoat CG5060, non-volatile content adjusted to 46.0% by weight). It was prepared to be 80.0% by weight with respect to the total weight of the coating liquid. As the aqueous mirror coating liquid of Comparative Example 3, an ethylene / vinyl acetate resin emulsion (manufactured by Dainippon Ink & Chemicals, Inc., trade name, Evadic EV-15, non-volatile content adjusted to 50% by weight) is used. It was prepared to be 70.0% by weight based on the total weight of the mirror edge coating liquid. As shown in Table 1, 14.0 wt% to 25.0 wt% of water added to each of the above emulsions, a film-forming aid (trade name, Texanol manufactured by Eastman Co., Ltd.) and a leveling agent An aqueous mirror coating solution was prepared by mixing the product with water.

  Next, each 200 mm square mirror coated with the aqueous mirror edge coating liquid of the compositions of Examples 1 to 3 and Comparative Examples 1 to 3 was heated in a drying oven at 180 ° C. for 5 minutes to dry each, and the inclined portion 5 A coating 4 was obtained.

  Next, the pencil hardness test, the adhesion test, the acid resistance test, the alkali resistance test, the hot water resistance test, the cast test and the drying test of the test methods and evaluation criteria shown in Table 2 were performed.

  Evaluation results of mirrors in which the evaluation criteria are ◯ and the rejection is x, and the mirror edge coating liquid having the composition shown in Examples 1 to 3 and Comparative Examples 1 to 10 is applied to form the coating film 4 on the inclined portion 5. Is shown in Table 3.

  The mirrors of Examples 1 to 3 using an aqueous mirror rim coating liquid comprising the acrylic silicone resin emulsion of the present invention as a composition passed all tests and were excellent, but deviated from the composition ratio range of the present invention. The mirrors of Comparative Examples 1 to 10 using the mirror edge coating liquid are inferior because there are tests that do not pass.

  As described above, according to the embodiment, an aqueous mirror rim coating liquid containing an acrylic silicone resin emulsion obtained by dispersing the acrylic silicone resin of the present invention in water, particularly, the acrylic silicone resin is a silicon-containing acrylic series. It is an acrylic silicon resin emulsion obtained by emulsion polymerization of only a monomer, or an acrylic silicon resin emulsion obtained by emulsion polymerization of a silicon-containing acrylic monomer and a monomer not containing silicon. The mirror formed by coating the edge of the mirror with the water-based mirror edge coating liquid is firmly attached to the silver mirror film 1, the copper film as the metal protective film 2, and the back surface protective film 3. It has been confirmed that it has excellent corrosion resistance and has an excellent anticorrosive effect over a long period.

It is sectional drawing of an example of the mirror by which the film was formed in the edge to which the edge coating liquid for mirrors was apply | coated.

Explanation of symbols

G Glass substrate 1 Silver mirror film 2 Metal protective film 3 Back coating film 4 Coating 5 Inclined part

Claims (4)

An aqueous mirror coating composition for mirrors, comprising an acrylic silicone resin emulsion obtained by dispersing acrylic silicone resin in water. The acrylic silicon resin is an acrylic silicon resin emulsion obtained by emulsion polymerization of only a silicon-containing acrylic monomer, or an acrylic polymer obtained by emulsion polymerization of a silicon-containing acrylic monomer and another monomer. 2. The aqueous mirror rim coating liquid according to claim 1, which is a silicone resin emulsion. 3. The aqueous mirror coating composition for mirror according to claim 1, wherein the composition of the acrylic silicone resin is cyclohexyl methacrylate, butyl acrylate, methyl methacrylate and butyl methacrylate, or a silicon monomer. A silver mirror film, a metal protective film, and a back coating film are sequentially laminated on a glass substrate, and then the aqueous mirror edging liquid according to any one of claims 1 to 3 is applied to a peripheral edge of the glass substrate. A mirror having a coating that is dried and hardened after rim coating.