JPH0586973B2 - - Google Patents

Description

[Detailed description of the invention]

<Industrial Field of Application> The present invention involves forming a first layer by coating and curing a liquid substance that has good adhesion to polyester films on the surface of a base material of a polyester film or sheet. This invention relates to a coated polyester resin film molded article with excellent abrasion resistance, adhesion, water resistance, and weather resistance, in which a second layer is formed by coating and curing a liquid material containing silicon resin on the layer. . <Prior art> Generally, biaxially oriented polyester resin films are widely used as transparent materials due to their excellent mechanical properties and transparency, but they have the drawback of poor abrasion resistance and easy scratching on the surface. have. In order to improve these drawbacks, a method of coating with a thermosetting resin has been proposed. For example, in Japanese Patent Publication No. 60-53703, a polyester resin is applied as an undercoat layer on a polyethylene terephthalate molded product, and a topcoat containing a vinyl polymer mainly composed of melamine group-containing (meth)acrylate is coated and cured. An abradable laminate is disclosed. In addition, in Japanese Patent Publication No. 43303/1983, a resin composition containing a vinylpyrrolidone-acrylic ester copolymer and a quaternary ammonium salt polymer was applied as an undercoat layer on a polyester polymer, and colloidal silica was applied thereon. Disclosed is an abrasion-resistant laminate obtained by coating and curing a top coat containing a hydrolyzate of an epoxy group-containing alkoxysilane as a main component. <Problems to be Solved by the Invention> However, in the above-mentioned Japanese Patent Publication No. 60-53703, it was not possible to obtain a material with sufficient hardness, and in the Japanese Patent Publication No. 60-43303, hardness decreased due to boiling water immersion, etc. There was a problem that sexual defects were likely to occur. <Means for Solving the Problems> The present inventors have made extensive efforts to eliminate such drawbacks and provide a polyester resin molded article with improved abrasion resistance, adhesion, and water resistance. As a result of research, it has been found that the first layer is coated with a specific organic polymer to improve the adhesion of a composition mainly composed of silicon-based resin and inorganic particles to a polyester resin base material. It has been found that the abrasion resistance, water resistance, and weather resistance of a polyester resin laminate can be improved by coating and curing a composition containing as a main component and inorganic particles on the first layer. That is, the present invention applies a first layer of acrylic resin and a liquid material containing an organic silane compound to the outside of the first layer in contact with the first layer of acrylic resin on the surface of a transparent polyester base material having a thickness of 10 μm to 500 μm. death,
A method for producing polyester laminates each comprising a second layer formed by curing, wherein said first layer comprises glycidyl (meth)acrylate containing at least 10 mol % of glycidyl (meth)acrylate. A liquid material containing a copolymer of meth)acrylate and hydroxyalkyl(meth)acrylate, and an amine as a curing catalyst in an amount of 0.03 to 10% by weight based on the copolymer is applied and cured. This is a method for producing a polyester laminate, characterized in that the polyester laminate is formed by: The liquid material containing the organic silane compound has the following components a and b a; inorganic particles with a particle size of 1 to 200 nm b; general formula (1)

[Formula] (In the formula, R ¹ is an alkyl group or alkoxyalkyl group having 1 to 6 carbon atoms, R ² is a hydrocarbon group having 1 to 6 carbon atoms, R ³ is a hydrocarbon group, or an epoxy group, (meth)acryloyl Partial hydrolysis of a silicon compound represented by (n is 2 or 3, m is 0 or 1) an organic group containing a group, a vinyl group, an allyl group, a mercapto group, a halogen atom, an amino group, a ureido group, or an amide group Preferably, it is a mixture of substances. In the present invention, the liquid material used to form the first layer contains one or more acrylic ester or methacrylic ester polymers containing the epoxy group in the molecule, and further contains If desired, it contains one or more homopolymers or copolymers of acrylic esters or methacrylic esters represented by general formula (2). This liquid contains at least 1% by weight of solids and contains at least a component derived from (meth)acrylic acid ester containing an epoxy group in the molecule based on all monomer units.
It is desirable that the content is more preferably 0.01 mol %, more preferably at least 0.5 mol %. In addition to the above-mentioned components, a solvent and various additives are added as desired to form a liquid product. Examples of solvents include alcohols such as methanol, ethanol, isopropal, butanol, and diacetone alcohol; cellosolves such as methyl cellosolve, ethyl cellosolve, isopropyl cellosolve, and butyl cellosolve; ethyl acetate, butyl acetate, ethylene glycol diacetate, ethyl cellosolve acetate, etc. Acetate esters;
Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and diisopropyl ketone; other examples include toluene and dichloromethane, and a mixture of these may be used. Examples of additives include flow control agents, ultraviolet absorbers, antioxidants, curing agents, crosslinking agents, and the like. Examples of the flow control agent include commercially available fluorine-based surfactants, block copolymers of alkylene oxide and dimethylsiloxane, and 0 to 5% by weight of the liquid material used to form the first layer. More preferably, it is 0 to 3% by weight. As a UV absorber, 2-hydroxy-4-
Methoxybenzophenone, 2-hydroxy-4-
Octoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-
Benzophenones such as methoxybenzophenone; 2-(2'-hydroxy-5'-methylphenyl)
Benzotriazole, 2-(2'-hydroxy-
5'-t-butylphenyl)benzotriazole,
2-(2'-hydroxy-5'-octylphenyl)
Benzotriazole, 2-(2'-hydroxy-
Benzotriazoles such as 3'.5'-di-t-butylphenyl)benzotriazole, 2-(2'-hydroxy-di-t-butylphenyl)-5-chlorobenzotriazole; ethyl-2-cyano-
Examples include cyanoacrylates such as 3,3'-diphenyl acrylate. These alone,
Alternatively, two or more types may be used in combination, and all polymers in the liquid used to form the first layer
0 to 200 parts by weight are used per 100 parts by weight. As antioxidants, 2,6-di-tert-butyl-P-cresol, 2 or 3-tert-butyl-4-methoxyphenol, stearyl-β-
(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 2,2'-methylenebis-(4-methyl-6-tert-butylphenol),
4,4'-thiobis-(3-methyl-6-tert-butylphenol), 4,4'-butylidene-bis-(3
-methyl-6-tert-butylphenol), 1,
1,3-tris-(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 1,3,
5-trimethyl-2,4,6-tris(3,5-
di-tert-butyl-4-hydroxybenzyl)benzene, tetrakis-[methylene-3-(3',5'-
di-tert-butyl-4'-hydroxyphenyl)propionate] methane, dilaurylthiodipropionate, dimyristylthiodipropionate,
Triphenylphosphite, diphenylisodecylphosphite, phenyldiisodecylphosphite, 4,4'-butylidene-bis-(3-methyl-6-tert-butylphenyl-di-tridecyl)
Examples include phosphite, tris(nonylphenyl) phosphite, etc., which may be used alone or in combination of two or more, and the weight of the total polymer contained in the liquid used to form the first layer is 100. 0 to 60 parts by weight, preferably 0 to 30 parts by weight. Curing catalysts and crosslinking agents are not necessarily required. However, the organic solvent in the liquid used to form the second layer erodes the first layer, resulting in a decrease in the adhesion between the second layer and the first layer, or the adhesive strength of the polyester transparent sheet. 1st
The adhesion with the layer may be reduced. 1st
In order to prevent erosion of the first layer and improve water resistance, it is preferable to include a curing catalyst and a crosslinking agent in the liquid material used to form the first layer. Further, by forming a crosslinked structure in the first layer, the water resistance of the laminate can be improved. Examples of this curing catalyst include hydrochloric acid, ammonium chloride, ammonium nitrate, ammonium thiocyanate, ammonium perchlorate, dimethylaminopropylamine, etc., and the amount used is generally 0.03 to 10% by weight based on the resin solid content. It is appropriate that As a crosslinking agent, triglycidyl tris (2-
There are various epoxy resins derived from bisphenols such as hydroxyethyl isocyanurate, resorcin diglycidyl ether, bisphenol A diglycidyl ether, and bisphenol S diglycidyl ether. It is generally appropriate to use the resin in an amount of 1 to 50% by weight based on the solid resin. A liquid material containing the above-mentioned components used to form the first layer is applied to a polyester transparent sheet, and the resulting coating film is baked at a temperature lower than the heat deformation temperature of the polyester transparent sheet. 1 layer is obtained. At that time, the film is subjected to alkali treatment, discharge or plasma treatment, flame treatment, polishing, sandblast treatment, etc., as required. The application method is usually the usual dipping method,
These methods include a spraying method, a roller coating method, a flow coating method, etc., and may be appropriately selected depending on the desired product of the polyester transparent sheet. The preferred thickness of the first layer obtained is 0.05~
It is 10 μm, more preferably 0.5 to 5 μm. 0.05μm
If it is smaller than 10 μm, the adhesion will decrease, and if it is larger than 10 μm, the coating film may become cloudy or cracks may occur. The solid content of the liquid used to form the first layer is adjusted with the above-mentioned solvent depending on the coating method and conditions so as to obtain the desired thickness. The solid content of the liquid used for this is approximately 1 to 20% by weight. The particle size of component a used in the present invention is 1 to
100 nm inorganic particles include SiO ₂ , A ₂ O ₃ , ZrO ₂ ,
TiO ₂ , Sb ₂ O ₅ , SnO ₂ , Yb ₂ O ₃ , Yb ₂ O ₅ , TAa ₂
Ultrafine powder such as O ₅ , Y ₂ O ₃ , CeO ₂ or
These are colloidal solutions in which these are dispersed in water or an organic solvent-based dispersion medium. Examples of the silicon compound represented by the general formula (1) used in the present invention include the following. Namely, trimethylmethoxysilane, dimethyltrimethoxysilane, methyltrimethoxysilane, tetraethoxysilane, phenyltrimethoxysilane, phenylmethyldimethoxysilane, vinyltriethoxysilane, vinyltris(β-methoxyethoxy)silane, vinyltriacetoxysilane. , γ-methacryloxypropyltrimethoxysilane, γ-aminopropyltriethoxysilane,
N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, N-bis(β-hydroxyethyl)-γ-aminopropyltriethoxysilane,
Examples include N-(β-aminoethyl)-γ-aminopropyl(methyl)dimethoxysilane, γ-chloropropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, etc. . In the present invention, the partial hydrolyzate of one or more selected from the silicon compounds represented by the general formula (1) refers to the alkoxy group or alkoxyalkyl group in the silicon compound in which part or all of the alkoxy group or alkoxyalkyl group is substituted with a hydroxyl group. This includes those in which substituted hydroxyl groups are partially naturally condensed. These hydrolysates can be obtained by hydrolysis in a mixed solvent such as water and alcohol in the presence of an acid, as is known in the art. When the silicon compound represented by the general formula (1) is used without being hydrolyzed, the cured coating film becomes white and the abrasion resistance is insufficient. When using the silicon compound represented by the general formula (1) as a hydrolyzate, better results are often obtained by mixing and simultaneously co-hydrolyzing the compounds than by hydrolyzing them separately. Moreover, it is more preferable to hydrolyze in the coexistence of particles. The liquid material used to form the second layer in the present invention contains 1 to 70% by weight of solids, and 1 to 80% by weight of component a, 20 to 80% by weight of the total solids. It is preferable that 99% by weight of component b is contained, and in addition, an organic solvent, a curing catalyst, and various additives as desired are contained. Solvents that may be included in the composition for forming the second layer include monohydric or polyhydric alcohols, ketones, esters, ethers, cellosolves, halides, carboxylic acids, and aromatic compounds. , ether alcohol, ketone alcohol, etc., and one or two of these can be used.
It can be used as a mixed solvent of more than one species. Especially lower alcohols such as methanol, ethanol, propanol, isopropanol, butanol;
Cellosolves such as methyl cellosolve, ethyl cellosolve, and butyl cellosolve; lower alkyl carboxylic acids such as formic acid, acetic acid, and propionic acid; aromatic compounds such as toluene and xylene; esters such as ethyl acetate and butyl acetate; and acetone, methyl ethyl ketone, and methyl It is preferable to use ketones such as isobutyl ketone alone or as a mixed solvent. Curing catalysts include ammonium perchlorate, ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium thiocyanate, perchloric acid, hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid, sulfonic acid, p-toluenesulfonic acid, boron trifluoride and its electron donor. Complex with; SnC ₄ , ZnC ₃ , FeC ₃ , A
Lewis acids and their complexes such as C ₃ , SbC ₅ , TiC ₄ ; organic acid metal salts such as sodium acetate, zinc naphthenate, cobalt naphthenate, zinc octylate, tin octylate; zinc borofluoride, tin borofluoride, etc. Boric acid metal salts; boric acid organic esters such as ethyl borate and methyl borate; alkalis such as sodium hydroxide and potassium hydroxide; titanate esters such as tetrabutoxytitanium and tetraisopropoxytitanium; chromium acetylacetonate , metal acetylacetonates such as titanyl acetylacetonate, aluminum acetylacetonate, cobalt acetylacetonate, nickel acetylacetonate; n
-butylamine, di-n-butylamine, tri-
Amines such as n-butylamine, guanidine, biguanide, and imidazole; highly fluorinated aliphatic sulfonates such as ammonium trifluoromethylsulfonate, potassium trifluoromethylsulfonate, and sodium trifluoromethylsulfonate, NH ₄ (CF ₃ SO ₂ ) ₂ C.Br, K(CF ₃ SO ₂ )CH,
Examples include highly fluorinated aliphatic sulfonyl compounds such as Ba[CF ₃ SO ₂ ) ₂ CH] ₂ . Among these curing catalysts, ammonium perchlorate, ammonium chloride, ammonium sulfate, ammonium nitrate, sodium acetate, and trifluoromethylsulfonic acid are used as curing catalysts that have good coating film hardness, transparency, etc., and a good pot life for liquid products. Perchlorates, hydrochlorides, sulfates, carboxylates, highly fluorinated aliphatic sulfonates, and highly fluorinated aliphatic sulfonyl compounds represented by ammonium and bis(trifluoromethylsulfonyl)bromomethylammonium Are suitable. As the curing catalyst used to form the second layer, one or more of the various curing catalysts described above may be used in combination. The amount of these curing catalysts added is 0.05 to 10% of the solid content in the liquid used to form the second layer.
% by weight, more preferably 0.1-5% by weight. Typical additives mixed into the liquid used to form the second layer are flow control agents, such as fluorosurfactants, alkylene oxides, dimethylsiloxane, etc. Examples include block copolymers of . A small amount of these flow control agents is sufficient, and 0.01% of the total liquid used to form the second layer is sufficient.
-5% by weight, more preferably 0.03-3% by weight. Further, small amounts of antioxidants, ultraviolet absorbers, etc. can also be added. Coating methods for forming the second layer include the commonly used dipping method, flow coating method, barcoder method, doctor blade method,
After coating the first layer on a polyester transparent sheet base material that has been coated and baked in advance by a spraying method or the like, the first layer is baked for 5 minutes to 5 hours at a temperature of 70°C or higher and below the deformation temperature of the base material for 5 minutes to 5 hours. By doing so, a coating film with excellent abrasion resistance, adhesion, heat resistance, and weather resistance can be obtained. The preferred thickness of the second layer is 1 to 30 microns;
More preferably, it is 3 to 15 microns. If it is less than 1 micron, the wear resistance will not be sufficient, and if it is more than 30 microns, cracks will easily occur. In addition to the above materials, materials having photochromic, electrochromic, or thermochromic properties may be mixed into the first and/or second layer. <Function> According to the present invention, the first layer containing an acrylic ester or methacrylic ester polymer containing an epoxy group in its molecule, between the polyester transparent base material and the second layer consisting of an organosilicon compound. Since the layer has good adhesion to both the polyester transparent substrate and the second layer, the first layer acts as an adhesion improving layer between the polyester transparent sheet and the second layer. act. Furthermore, since the first layer contains an epoxy group, a crosslinked structure can be formed in the first layer when a curing catalyst is included in the liquid material used to form the first layer. , in which case the first layer also acts as a water-resistant and hot water-resistant layer of the laminate. <Examples> The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to these Examples. Note that parts and % in the examples indicate parts by weight and % by weight, respectively. Furthermore, the performance of the coating film was evaluated using the following method. That is, abrasion resistance: The resistance to scratching by rubbing with #0000 steel wool was examined and judged as follows. A: No damage occurs even if strongly rubbed. B: Slight damage occurs when rubbed strongly. C: Even weak friction causes scratches. Adhesion: In the so-called cross-cut tape test, cross-cut 100 squares by making 11 parallel lines vertically and horizontally at 1 mm intervals on the surface of the paint film using a knife.
After adhering a cellophane adhesive tape thereon, the tape was peeled off and the number of squares that did not peel off among 100 squares was indicated. Hot water resistance: The abrasion resistance and adhesion of the coating film after immersion in boiling water for 1 hour were examined. The liquid materials used to form the first layer and the second layer were prepared as follows. (1) Preparation of the liquid used to form the first layer; a. A mixture of 70 parts of glycidyl methacrylate, 30 parts of 2-hydroxyethyl methacrylate, 230 parts of ethyl cellosolve, and 0.4 parts of azobisisobutyronitrile was heated with nitrogen. 4 to 90℃ under atmosphere
Copolymerization was carried out by stirring for hours. Thereafter, 1094.7 parts of an ethyl cellosolve solution with a small amount of dimethylaminopropylamine and a small amount of a flow control agent were added to form the liquid used to form the first layer. b A mixture of 50 parts of glycidyl methacrylate, 50 parts of 2-hydroxyethyl methacrylate, 230 parts of ethyl cellosolve, and 0.4 parts of azobisisobutyronitrile was heated to 90°C under a nitrogen atmosphere for 4 hours.
Copolymerization was carried out by stirring for hours. Thereafter, 1094.7 parts of an ethyl cellosolve solution with a small amount of dimethylaminopropylamine and a small amount of a flow control agent were added to form the liquid used to form the first layer. c Copolymer of glycidyl methacrylate and 2-hydroxyethyl methacrylate Synthesized in the same manner as a). Further, a mixture of 5 parts of dimethylaminoethyl methacrylate, 95 parts of 2-hydroxyethyl methacrylate, 400 parts of ethyl cellosolve, and 0.4 parts of azobisisobutyronitrile was stirred at 90° C. for 4 hours under a nitrogen atmosphere to copolymerize. Then, an ethyl cellosolve solution containing the copolymer of glycidyl methacrylate and 2-hydroxyethyl methacrylate synthesized above
70 parts of the above-synthesized ethyl cellosolve solution containing the copolymer of dimethylaminoethyl methacrylate and 2-hydroxyethyl methacrylate, and 884 parts of the ethyl cellosolve solution to which a small amount of flow control agent was added.
A liquid material was used to form the first layer. d 70 parts of methyl methacrylate, 30 parts of 2-hydroxyethyl methacrylate, 400 parts of ethyl cellosolve, 0.4 parts of azobisisobutyronitrile
The mixture was stirred at 90° C. for 4 hours under nitrogen atmosphere to effect copolymerization. Thereafter, 884 parts of an ethyl cellosolve solution to which a small amount of a flow control agent was added was mixed to form a liquid material used to form the first layer. e dimethylaminoethyl methacrylate and 2
-A copolymer of hydroxyethyl methacrylate was synthesized in the same manner as in c). after that,
943 parts of an ethyl cellosolve solution with a small amount of flow control agent added was mixed to form a liquid material used to form the first layer. (2) Preparation of the liquid used to form the second layer; a 944.4 parts of γ-glycidoxypropyltrimethoxysilane, colloidal silica (manufactured by Nissan Chemical Industries, Ltd., Snowtex C, solid content 20%) )
835.2 parts and 8.0 parts of 1,2N-hydrochloric acid were mixed, and after refluxing at 80°C for 5 hours, 168 parts of the solvent was distilled at a distillation temperature of 80 to 90°C. The obtained solution is

41% of γ-glycidoxypropyltrimethoxysilane hydrolyzate calculated as [Formula], and
Colloidal Silica 10 calculated as _SiO2
It contained %. To 140 parts of the hydrolyzate solution of γ-glycidoxypropyltrimethoxysilane containing colloidal silica thus obtained, 149 parts of ethyl cellosolve and ammonium perchlorate were added.
0.75 part of a flow control agent was added to form a liquid material for forming a second layer. b 141 parts of γ-glycidoxypropyltrimethoxysilane, 122 parts of methyltrimethoxysilane
Part, colloidal silica (manufactured by Nissan Chemical Industries, Ltd.)
Mix 200 parts of Snowtex C (solid content 20%) and 190 parts of 0.1N hydrochloric acid aqueous solution, and heat at 80℃~
Hydrolysis was carried out by refluxing at 85°C for 2 hours. The obtained solution is

γ-Glycidoxypropyltrimethoxysilane hydrolyzate 15.3%, CH ₃ SiO _1.5 calculated as [Formula]
Methyltrimethoxysilane calculated as
9.2%, and 6.1% colloidal silica calculated as _SiO2 . To 100 parts of the ternary cohydrolyzate solution obtained in this way, 0.31 part of ammonium perchlorate,
A small amount of a flow control agent and 81.4 parts of ethyl cellosolve were added to form a liquid material for forming the second layer. c 60 parts of γ-glycidoxypropyltrimethoxysilane, 173 parts of methyltrimethoxysilane,
Colloidal silica (manufactured by Nissan Chemical Industries, Ltd., Snowtex C, solid content 20%) 71 parts and 0.1
Mix 190 parts of normal acetic acid aqueous solution and heat to 80℃~85℃
Hydrolysis was carried out by refluxing for 2 hours. The obtained solution is

γ-Glycidoxypropyltrimethoxysilane hydrolyzate 8.6%, _CH3 calculated as [Formula]
It contained 17.3% methyltrimethoxysilane hydrolyzate calculated as SiO _1.5 and 2.9% colloidal silica calculated as SiO ₂ . To 450 parts of the ternary cohydrolyzate solution thus obtained, 42 parts of ethyl cellosolve, 0.8 parts of ammonium perchlorate, and 0.5 parts of ammonium chloride.
1.3 parts of sodium acetate and a small amount of a flow control agent were added to form a liquid for forming the second layer. In advance, the liquid material used to form the first layer prepared above was coated on one side of a cleaned polyester transparent sheet (Toray Industries, Inc., Lumirror film thickness: 125 μm), and then dried in a hot air drying oven.
Bake at 130℃ for 15 minutes to harden and reduce the thickness to approx.
A first layer of 0.7 μm was formed. Next, the liquid material used to form the second layer prepared above is applied onto the first layer, and baked in a hot air drying oven at 150°C for 60 minutes to harden and form a second layer with a thickness of about 5 μm. A polyethylene terephthalate laminate was prepared by forming a polyethylene terephthalate laminate. Table 1 shows the combinations of the first layer and the second layer and the results.

【table】

【table】

Claims (1)

[Scope of Claims] 1. A first layer of acrylic resin on the surface of a polyester transparent base material having a thickness of 10 μm to 500 μm, and a liquid material containing an organic silane compound on the outside in contact with the first layer. A method for producing a polyester laminate, each comprising a second layer formed by applying and curing a polyester laminate, wherein the first layer comprises at least 10 mol % of glycidyl (meth)acrylate. a copolymer of glycidyl (meth)acrylate and hydroxyalkyl (meth)acrylate, and a liquid material containing an amine as a curing catalyst in an amount of 0.03 to 10% by weight based on the copolymer, A method for producing a polyester laminate, characterized in that it is formed by curing. 2 The liquid material containing the organic silane compound has the following components a and b a; inorganic particles with a particle size of 1 to 200 nm b; general formula (1) [Formula] (wherein R ¹ is an alkyl group having 1 to 6 carbon atoms) , alkoxyalkyl group, R ² is a hydrocarbon group having 1 to 6 carbon atoms, R ³ is a hydrocarbon group, or epoxy group, (meth)acryloyl group, vinyl group, allyl group, mercapto group, halogen atom, amino group, The polyester laminate according to claim 1, which is a mixture of a partial hydrolyzate of a silicon compound represented by an organic group containing a ureido group or an amide group, where n is 2 or 3, and m is 0 or 1. How to manufacture. 3. The liquid material containing the organosilane compound is
It contains 1 to 70% by weight of solid components, and the component a is 1 to 80% by weight, and the component b is 20 to 99% by weight based on the total solid content.
A method for producing a polyester laminate according to claim 1, which comprises: 4. The method for producing a polyester laminate according to claim 1, wherein the polyester transparent substrate is made of polyethylene terephthalate. 5. The method for producing a polyester laminate according to claim 2, wherein the silicon compound represented by the general formula (1) is methyltrialkoxysilane and/or γ-glyoxypropyltrialkoxysilane. 6. The method for producing a polyester laminate according to claim 2, wherein the inorganic fine particles are colloidal silica. 7. The method for producing a polyester laminate according to claim 1, wherein the liquid material applied to form the second layer contains perchlorate or sodium acetate. 8. The method for producing a polyester laminate according to claim 1, wherein the first layer has a thickness of 0.05 to 10 μm, and the second layer has a thickness of 1 to 30 μm. 9. The method for producing a polyester laminate according to claim 1, wherein the liquid material further contains a crosslinking agent.