JP2002012456A - Laminated glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide laminated glass exhibiting various colors and patterns which can be manufactured by conventional process of conventional laminated glass. SOLUTION: The laminated glass is manufactured by forming a high polymer films main structure of which is polysiloxiane structure on both sides of a paper sheet and holding and adhering it between 2 or more sheets of glass plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper material in which a polymer material having a polysiloxane structure as a main structure is sandwiched between glass plates on both sides, and the transparency, color and pattern are freely designed. It concerns possible laminated glass.

[0002]

2. Description of the Related Art A laminated glass is produced by sandwiching a transparent and tough synthetic resin film called polyvinyl butyral between two or three or more glass plates, heating and pressing. And, with this tough synthetic resin film, when glass is broken, scattering of glass fragments can be prevented,
It is highly safe, and because it does not easily penetrate the attacked object when it is hit, it is excellent in crime prevention, so the window glass material of various transportation such as cars, doors and window glass etc. Widely used for building materials.

In recent years, paper or cloth has been impregnated in advance with a special synthetic resin adhesive which is polymerized and cured by irradiation with heat or ultraviolet light, and is sandwiched between two or more glass plates. Alternatively, laminated glass manufactured by irradiating ultraviolet rays has also been put to practical use. While the polyvinyl butyral is a transparent synthetic resin film, paper and cloth are transparent (semi-transparent or opaque), colors, and patterns can be variously changed according to the application and taste. Laminated glass using paper, cloth, or the like as an intermediate film can be used as a building material with higher decorativeness, such as a door or window glass.

[0004]

The laminated glass in which polyvinyl butyral is sandwiched between glass plates is prepared by sandwiching polyvinyl butyral between glass plates and heating the same in an autoclave from 100 ° C. to 150 ° C. while heating the laminated glass.
It is manufactured by applying pressure of 5 Kg / cm ² and crimping. However, since the transparency and color of polyvinyl butyral cannot be changed, the color of the laminated glass is changed to the transparency, color, pattern, There is a problem that it cannot be changed according to the taste. In addition, there is an environmental problem that, when used or when cracked glass is disposed of, disposal of environmental hormones (endocrine disrupting substances) and toxic dioxins may occur depending on the treatment method.

[0005] On the other hand, a laminated glass in which paper or cloth is sandwiched between glass plates can achieve sufficiently practical safety and security, and also has various changes in transparency, color and pattern. Although it has the advantage of being able to be manufactured, there is a problem that a special synthetic resin-based adhesive which is polymerized and cured by heating or irradiating an external line must be used in the production thereof.

Another problem is that the production process is complicated in order to prevent bubbles from being generated between the glass plates during the production. In other words, in order to control the impregnation of the paper or cloth, and strictly adjust the viscosity of the synthetic resin adhesive in order to allow air bubbles to escape, impregnate the entire paper or cloth with the adhesive in advance. On the other hand, the same adhesive must be applied to the glass plate, and the two must be overlapped while eliminating bubbles. Such complexity of the manufacturing process ultimately leads to an increase in the manufacturing cost and a problem that it is difficult to provide an inexpensive laminated glass. There is also an environmental problem that, depending on the type of synthetic resin adhesive to be used, environmental hormones and toxic dioxins may be generated during disposal.

In order to provide a laminated glass having a variety of colors and patterns in addition to a transparent laminated glass, a laminated glass sandwiching polyvinyl butyral is used.
It is necessary to manufacture both laminated glass sandwiching paper and cloth, but as is clear from the above, since there are many differences in the manufacturing processes of both, separate production lines suitable for each production In addition, there is a problem that the production cost is increased.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to change the transparency, color, and pattern according to the use and taste while ensuring sufficient safety and security. Accordingly, the present invention provides a laminated glass that does not generate environmental hormones or toxic dioxins during disposal. The present invention, in addition to the above objects, without using a special synthetic resin adhesive,
An object of the present invention is to provide a laminated glass which can be manufactured by the same simple manufacturing process as a conventional laminated glass sandwiching polyvinyl butyral.

[0009]

According to a first aspect of the present invention, there is provided a paper comprising a polymer film having a polysiloxane structure as a main structure formed on both sides between two or more glass plates. The present invention relates to a laminated glass sandwiching and bonding a material. The invention according to claim 2 of the present invention is the laminated glass according to claim 1, wherein the polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material is made of an alkoxysilane represented by the following general formula (1). It is characterized by being a polymer film formed by a coating composition to be contained.

(Equation 1) (In the formula 1, R ₁ , R ₂ , R ₃ , and R ₄ may be the same or different from each other, are hydrogen or an alkyl group having 1 to 4 carbon atoms, and n is 2 to 8 According to a third aspect of the present invention, in the laminated glass according to the second aspect, the polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material is represented by the following general formula (2). 3. The method according to claim 2, wherein, of the four substituents, three are hydrolyzable substituents, and the other one contains an alkoxysilane consisting of non-hydrolyzable substituents.
A polymer film formed by the coating composition described in (1).

(Equation 2) (In the formula 2, R ₅ , R ₆ , and R ₇ may be the same or different from each other, and are hydrogen or an alkyl group or an alkenyl group having 1 to 10 carbon atoms, and R ₅ O, R ₆ O , R
₇ O indicates a siloxane bond, and R8 may include an epoxy group or a glycidyl group in the molecule.
It is an alkyl group, an alkenyl group or a phenyl group. The invention according to claim 4 of the present invention is the laminated glass according to claim 1, wherein the polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material is formed by a catalyst comprising a hydrolyzable organometallic compound. It is a polymer film formed from the coating composition. The invention of claim 5 of the present application is the laminated glass of claim 4, wherein the hydrolyzable organometallic compound is an organometallic compound containing titanium, zircon, aluminum or tin. The invention according to claim 6 of the present application is the laminated glass according to claim 1, wherein the glass is decorative glass. The invention of claim 7 of the present application is characterized in that, in the laminated glass of claim 1, the glass is decorative glass for a door.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a laminated glass according to an embodiment of the present invention, in which a paper material sandwiched between glass plates and a polymer film having a polysiloxane structure as a main structure formed on both surfaces thereof (hereinafter, referred to as a polymer film). (Sometimes simply referred to as a “polymer film”).
Reference numerals 1 and 3 denote polymer films having a polysiloxane structure as a main structure formed on both sides of a paper material, and reference numeral 2 denotes a paper material. The paper material 2 is, for example, a paper material manufactured from raw materials such as pulp or the like obtained by filtering bark fiber.

As the paper material 2, it is possible to use Western paper, Japanese paper (handmade high-quality Japanese paper, machine-made plain Japanese paper), or fibers made of a nonwoven fabric with increased strength, which is often used recently. . Nonwoven fabrics are made by entanglement of all fibers, such as paper fibers and cloth fibers, using an adhesive, etc., and are different from paper in that no adhesive is used. is there. That is, paper is the same as a nonwoven fabric in that it is created by entanglement of plant fibers, but paper focuses on the fact that the plant fibers are hydrophilic, and replaces water with an adhesive. It is manufactured.

In other words, water is used instead of the above-mentioned adhesive, water is dried, the water is dried, and the resulting paper fibers (vegetable fibers) are entangled. A non-woven fabric is paper, which is obtained by entanglement of fibers using an adhesive instead of water. By using such a nonwoven fabric, it is possible to finish as a paper material in the present invention at lower cost without consuming a large amount of water than using a normal paper material.

The polymer film 1 or 3 is
It is formed by applying a coating composition comprising components described below by a method such as dipping coating, spray coating, screen coating, screen printing, offset printing, and gravure printing. If the paper material 2 is immersed in the coating composition, a polymer film can be formed on both the front and back surfaces of the paper material as shown in FIG. When the coating composition is sprayed or brushed, the polymer film is formed only on the sprayed or brushed surface, but the polymer film is also formed on the opposite surface for adhesion to the glass plate.

The polymer film not only strongly adheres to the paper material on the one hand and the glass plate on the other hand, but also prevents the paper material from burning when left at high temperature using an autoclave, which will be described later. It is. Therefore, the polymer film is formed not only on both sides of the paper material but also on its end face as shown in FIG.

First, the case where the polymer film 1 or 3 is a polymer film having a polysiloxane structure as a main structure will be described. In this case, the coating composition containing the alkoxysilane is applied to the paper material 2 by the above-described method. Examples of the alkoxysilane as a main component of the coating composition include a compound represented by the general formula (1) (wherein R ₁ , R ₂ , R ₃ , and R ₄ are
Hydrogen or an alkyl group having 1 to 4 carbon atoms, and n is 2 to 8
Is).

Such an alkoxysilane can be easily obtained by condensing a monomer (for example, methyltrimethoxysilane). As a raw material of the alkoxysilane-based coating composition, a monomer such as the above-mentioned methyltrimethoxysilane can be used as it is, but in this case, since the polymerization takes time, the above-described characteristics are obtained in a short time. In order to obtain a polymer film having the same, it is preferable to use a condensate obtained by condensing a monomer.

However, if the degree of polymerization is too large, the number of alkoxy groups for polymerizing on a substrate such as paper at the time of coating will be insufficient, and the strength and the like of the formed polymer film will be insufficient. Prone. Therefore, in order to provide an insulating effect, water repellency, moderate strength, good light transmittance, and flame retardancy, it is particularly preferable to use those having a polymerization degree of 2 to 8. Although it is inexpensive, on the other hand, compared with tetraalkoxysilane, which cannot be used as it is because of its strong inorganicity, the monomer which is the raw material of the above-mentioned condensate can be purchased with the same ease. Thus, in the present invention,
Without having to use expensive so-called silane coupling agent, it is organic enough and has sufficient insulation effect.
A polymer film having water repellency, moderate strength, good light transmittance, and flame retardancy can be obtained.

In order to further increase the organic properties of the polymer film formed by applying the coating composition, various coatings different from the main component alkoxysilane are used in the coating composition. Silane can be added. Examples of the alkoxysilane added for this purpose include the aforementioned general formula (2) (wherein R ₅ ,
R ₆ and R ₇ may be the same or different from each other, and are hydrogen or an alkyl group or an alkenyl group having 1 to 10 carbon atoms, and R ₅ O, R ₆ O, and R ₇ O are a siloxane bond. And R ₈ is an alkyl group, an alkenyl group or a phenyl group which may contain an epoxy group or a glycidyl group in the molecule), and R ₈ represents four substituents in the alkoxysilane. Among them, there are those in which three are hydrolyzable substituents and the remaining one is a non-hydrolyzable substituent.

Specific examples of the alkoxysilane represented by the general formula (2) include methyltrimethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, vinyltrimethoxysilane, phenyltrimethoxysilane, and γ- (methacrylic acid). Loxypropyl) trimethoxysilane, γ-glycidoxypropyltrimethoxysilane, aminopropyltrimethoxysilane, β- (3,4
Epoxycyclohexyl) ethyltrimethoxysilane,
Methyltriethoxysilane, ethyltriethoxysilane, propyltriethoxysilane, vinyltriethoxysilane, phenyltriethoxysilane, γ- (methacryloxypropyl) triethoxysilane, γ-glycidoxypropyltriethoxysilane, aminopropyltriethoxy Silane, vinyl tris (β-methoxyethoxy)
Examples include silane.

These may be added alone or in combination of two or more. These may be added with a monomer or a condensate. When a condensate is added, it may be a condensate of the same compound or a condensate of different compounds.

The amounts of the various alkoxysilanes different from the main component added to the coating composition for the purpose of further increasing the organic properties of the polymer film formed by applying the coating composition as described above. It is important not to exceed 50% of the alkoxysilane represented by the general formula (1), which is the main component of the coating composition. If the addition amount exceeds 50%, when the coating composition is applied to a substrate, the bond between the main component and the alkoxysilane represented by the general formula (1) does not work well, and the strength of the polymer film is reduced. May decrease.

An alkoxysilane represented by the above general formula (1), which is a main component in the coating composition, and an alkoxysilane represented by the above general formula (2), which is added to the coating composition as required. As the catalyst to be cured and solidified, a commonly used catalyst can be used. For example, examples of the acid catalyst include hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, formic acid, and acetic acid. Further, for example, examples of the base catalyst include ammonia, tetramethylammonium hydroxide, 2-hydroxyethyltrimethylammonium hydroxide, ethanolamine, diethanolamine, and triethanolamine.

In the case of using a commonly used catalyst as described above, water of reaction is necessary for curing and solidifying the alkoxysilane. However, when the alkoxysilane, the water of reaction and the catalyst coexist, the coating composition is reduced. The substance is easily gelled, and long-term storage in a liquid state becomes difficult.
Therefore, when the coating composition is to be stored in a liquid state for a long period of time, it is preferable to use a hydrolyzable organometallic compound instead of the catalyst. This is because a hydrolyzable organometallic compound does not require reaction water when curing and fixing the alkoxysilane.

Examples of such organometallic compounds include those containing titanium, zircon, aluminum and tin.
Specific examples include tetrapropoxytitanate, tetrabutoxytitanate, tetrapropoxyzirconate, tetrabutoxyzirconate, tripropoxyaluminate, aluminum acetylacetonate, dibutyltin diacetate, and dibutyltin dilaurate.

The general formula (1) described above
An organic solvent or a surfactant is added to uniformly mix the alkoxysilane, the alkoxysilane represented by the general formula (2), the catalyst, and the reaction water to be added depending on the catalyst, if necessary. Is preferred. Examples of the organic solvent used for this purpose include alcohol. Specific examples include methanol, ethanol, propanol, isopropanol, butanol, pentanol, hexanol and the like. When these are used, they can be used alone or as a mixture of two or more.

The addition of an organic solvent or a surfactant as described below is effective for adjusting the viscosity and drying rate of the coating composition in addition to the above-mentioned purposes.
The organic solvent added for this purpose may be appropriately selected from those having an appropriate viscosity and boiling point according to the purpose. Also,
It can be used simultaneously with the above-mentioned organic solvent. Specific examples of the organic solvent that can be added for such purpose include ethylene glycol, propylene glycol, diethylene glycol, polyethylene glycol, dipropylene glycol, glycols such as polypropylene glycol, methoxyethanol, propoxyethanol, butoxyethanol, and methoxyethanol. Cellsolves such as propanol, ethoxypropanol, propoxypropanol and butoxypropanol can be exemplified.

Since these glycols and cellosolves have a hydroxyl group in the molecule, they react with alkoxysilane when condensed, and have these organic properties in the obtained siloxane bond network. Molecules may be introduced. This allows the obtained coating film to be more organic.

[0028] In addition to the above, a filler may be added to the coating composition, if necessary. Examples of the filler that can be used include silica, alumina, kaolin, mullite, and the like having an average particle size of about 0.03 to 5 μm.
Zeolite, silicon carbide, silicon nitride, oxides of metals (eg, titanium, iron, aluminum, cobalt, chromium, copper, etc.), salts of metals (silver nitrate, copper (II) nitrate, zinc nitrate, (II), silver sulfate, Copper sulfate, zinc sulfate, silver acetate, copper acetate, zinc acetate, etc.) and whiskers having an average diameter of about 0.05 to 2 μm and an average length of about 5 to 200 μm (for example, potassium titanate, silicon nitride, silicon carbide, etc.) Whisker) and the like. Further, a film curing agent, a viscosity modifier, a stabilizer, a coloring agent, and the like can be added to the coating composition.

The above-described coating composition may be left for about 1 hour to 1 day after preparation, or heated for several hours at or below the boiling point of the solvent used, and then used for coating paper materials. preferable. Further, in order to improve the adhesion between the formed polymer film and the paper material, the surface of the paper material can be pre-treated before applying the coating composition. These pretreatment methods are known per se and are well known.

As a method for forming a polymer film from the applied coating composition, a heating method is generally used. The heating method is performed at a temperature of 300 ° C. or lower, preferably 80 to 150 ° C.
The heating may be performed at a temperature of about 2 minutes to 1 hour. Of course, it is also possible to heat at a higher temperature if it does not affect the paper material. When the alkoxysilane contains a polymerizable unsaturated bond, a crosslinked structure can be further formed by using UV irradiation or the like.

A filler may be added to the coating composition, if necessary, for the purpose of enhancing the toughness of the polymer film. Fillers that can be used include silica, alumina, kaolin, mullite, zeolite, silicon carbide, silicon nitride, metals (e.g., titanium, iron, aluminum, cobalt, chromium, having an average particle size of about 0.03 to 5 μm). Oxide, etc.) and an average diameter of about 0.05
Whiskers (eg, whiskers of potassium titanate, silicon nitride, silicon carbide, etc.) having a mean length of about 5 to 200 μm.

The coating composition may further contain a film hardener, a viscosity modifier, a surfactant, etc. for the purpose of improving its stability, further strengthening its toughness, and coloring the polymer film itself. Agents, stabilizers, coloring agents and the like can be added.

In any of the above-mentioned coating compositions, the amount of the polymer material to be formed is from 2.5 to 25 μm from the viewpoint of heat resistance and toughness.
Applied to An example of a process for forming a polymer film on the surface of the paper material 2 will be described. First, a raw material obtained by mixing a pulp material and a resin is prepared. Next, this raw material, for example,
Papermaking using a papermaking machine, etc., to a predetermined size (for example, 60 cm
A paper material 2 having a rectangular shape of 90 cm and a thickness of about 0.3 mm to 1 mm finally) is produced.

Next, the paper material 2 is immersed in a tank containing the coating composition prepared separately and taken out. When the paper material 2 is dried at 80 ° C. for 1 hour, for example,
Polymer films 1 and 3 of about 10 to 13 microns are formed. As described above, in forming the polymer film on the paper material 2, the coating composition is put into a spray container, and the coating composition is sprayed from the spray container, applied with a brush, and further gravure coated. Or by printing such as offset printing.

In the above description, the drying is performed at 80 ° C. for one hour. However, the drying can be performed at a temperature close to 100 ° C. as long as the temperature does not affect the paper material. When drying at a high temperature of about 100 ° C., the drying time can be reduced to about 10 minutes. Conversely, when drying at a low temperature (for example, about 60 ° C.), the drying time is set to about 2 hours. Further, when a polymerizable unsaturated bond is contained in the alkoxysilane, a crosslinked structure can be further formed by using UV irradiation or the like in combination. If the moisture content of the paper material is increased, the adhesive strength between the glass material and the glass plate is reduced, and the penetration resistance can be improved. However, if the content is too large, the laminated glass is used in the bonding step or after production. While using, air bubbles may be generated.

In the above description, the size of the paper material 2 is a rectangular shape of 60 cm × 90 cm and a thickness of 0.3 m.
The size and thickness of the paper material 2 are determined as appropriate depending on the size of the laminated glass and the like, but are not limited to these sizes. Furthermore, although the coloring of the polymer film has been described, the polymer film can also be formed on the paper material 2 after coloring and drawing a picture or printing an appropriate pattern by a normal printing method. . Further, the paper material can be cut to adjust the size and the like to a predetermined shape even after the polymer film is formed. In this case, FIG.
As shown in (c), the paper is exposed on the end face. In this case, after cutting into a predetermined shape, an additional polymer film is formed by spraying or the like.

FIG. 2 shows a partial cross section of the laminated glass of the present invention.
Shows a paper material in which a polymer film having a polysiloxane structure as a main structure is formed on both sides. As the glass plates 4 and 6, glass plates conventionally used for laminated glass can be used in the present invention. Here, if both 4 and 6 are transparent glass plates, the laminated glass will exhibit the color and pattern of the paper material or the polymer film, even when viewed from either the front surface or the back surface. . If either 4 or 6 is a transparent glass plate, only that surface will exhibit the color or pattern of the paper material or polymer film.

In the formation of the polymer film, different colors are applied to the front and back surfaces of the laminated glass, for example, by using a coating composition in which different fillers are blended on both sides of the paper material. You can also. The laminated glass of the present invention exhibits sufficient practicality in light resistance, heat resistance, impact resistance and penetration resistance.
Laminated glass with high safety and security.

The laminated glass of the present invention can be produced by using a paper material in which the above-mentioned polymer film is formed on both sides instead of polyvinyl butyral in the conventional laminated glass production process. That is, a paper material having a polymer film formed on both sides thereof is sandwiched between glass plates and placed in a temperature range of 120 ° C. to 150 ° C. in an autoclave.
What is necessary is just to apply a pressure of 0 to 15 kg / cm ² and to perform pressure bonding. The polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material by such pressure bonding has an affinity with the glass plate and is integrated with the glass plate. No need to use.

FIG. 3 is a partial cross-sectional view of a laminated glass according to another embodiment of the present invention.
1 is a glass plate, 8 is polyvinyl butyral, 10
Shows a paper material in which a polymer film having a polysiloxane structure as a main structure is formed on both sides.

As in this embodiment, the laminated glass of the present invention may be one in which three or more glass plates are bonded, and further, a polymer having one or more polysiloxane structures as a main structure. It suffices that the paper material having the film formed on both sides is sandwiched between any of the glass plates. Therefore, as shown in FIG. 3, a paper material having a polymer film having a polysiloxane structure as a main structure formed on both sides thereof is sandwiched between glass plates 9 and 11, and a conventional glass material is provided between glass plates 7 and 9. Polyvinyl butyral can also be inserted. The paper material formed on both sides with a polymer film having a polysiloxane structure as the main structure and the polyvinyl butyral are both bonded to the glass plate by heating and pressing in an autoclave. Is easy to manufacture.

In the laminated glass of this embodiment, by using tough polyvinyl butyral, the light resistance and heat resistance of the conventionally used and highly reliable laminated glass,
The effect is that the color and pattern of the whole laminated glass can be freely changed according to its use and taste while maintaining impact resistance and penetration resistance. 2 and 3
In the embodiment shown in (1), there is no particular limitation on the glass plate to be pressure-bonded. In addition to the transparent or translucent glass plate described above, for example, a glass plate with improved security can be used.

[0043]

As described above, in the laminated glass of the present invention, a polysiloxane structure is formed on both sides of a paper material by, for example, an alkoxysilane-containing coating composition represented by the general formula (1). Is formed and bonded between glass plates. Since the polymer film having the polysiloxane structure as a main structure is a film having rigidity and flexibility itself, the laminated glass of the present invention has light resistance, heat resistance, impact resistance, and penetration resistance. It is a laminated glass that exhibits sufficient practicality and high safety and security.

It is easy to control the transparency of the paper material, and it is possible to add a color according to a purpose of use or a taste, and to freely write characters and patterns. Thus, according to the present invention, the effect of freely changing the transparency, color, pattern, and the like of the laminated glass is achieved. As a result, the laminated glass of the present invention requires safety and / or security and various colors and patterns, such as stained glass, car side or rear glass, window glass of high-rise buildings and dwellings, and various crafts. Particularly suitable laminated glass is used as decorative glass, as decorative glass used as glass for cupboards and sideboards, or as decorative glass for doors, for example used as dwelling or office doors, vehicle doors. is there.

Further, the laminated glass of the present invention is a laminated glass using a paper material, and it is not necessary to use a special synthetic resin-based adhesive. There is also an environmental effect that there is no need to worry about the generation of environmental hormones and toxic dioxins.

Further, the laminated glass of the present invention can be manufactured by the same process of heating and crimping in an autoclave as in the case of the conventional laminated glass sandwiching polyvinyl butyral. There is also an effect on manufacturing that a wide variety of laminated glass can be manufactured without adding a glass. Furthermore, the laminated glass of the present invention, which can be produced by heating and pressing in an autoclave without using an adhesive, complicates the production process of generating bubbles in a conventional laminated glass using an adhesive. Since no problem is caused, the present invention gives a great benefit to the user, that is, the production cost is suppressed, and a variety of laminated glass can be supplied at low cost.

[Brief description of the drawings]

FIG. 1 is a view for explaining a paper material sandwiched between glass plates and a polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material in the laminated glass of the present invention. is there.

FIG. 2 is a diagram showing a cross section of a laminated glass according to one embodiment of the present invention.

FIG. 3 shows another embodiment of the present invention.
It is a figure which shows the cross section of a laminated glass.

[Explanation of symbols]

 1, 3, polymer film 2, paper material 4, 6, glass plate 5, paper material with polymer film formed on both sides 7, 9, 11, glass plate 8, polyvinyl butyral 10,・ Paper material with polymer film formed on both sides

Claims (7)

[Claims] 1. A laminated glass in which a paper material formed on both sides with a polymer film having a polysiloxane structure as a main structure is sandwiched and bonded between two or three or more glass plates. 2. A polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material is represented by the following general formula (1):
The laminated glass according to claim 1, wherein the laminated glass is a polymer film formed of a coating composition containing an alkoxysilane represented by the following formula: (Equation 1) (In the formula 1, R ₁ , R ₂ , R ₃ , and R ₄ may be the same or different from each other, are hydrogen or an alkyl group having 1 to 4 carbon atoms, and n is 2 to 8 is there.) 3. A polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material is represented by the following general formula (2):
3. The method according to claim 2, wherein three of the four substituents represented by the formula (3) are hydrolyzable substituents, and the other one contains an alkoxysilane comprising a non-hydrolyzable substituent. The laminated glass according to claim 2, which is a polymer film formed by the coating composition according to (1). (Equation 2) (In the formula 2, R ₅ , R ₆ , and R ₇ may be the same or different from each other, and are hydrogen or an alkyl group or an alkenyl group having 1 to 10 carbon atoms, and R ₅ O, R ₆ O , R
₇ O represents a siloxane bond, and R ₈ may include an epoxy group or a glycidyl group in the molecule;
It is an alkyl group, an alkenyl group or a phenyl group. ) 4. The polymer film having a polysiloxane structure as a main structure formed on both sides of the paper material is a polymer film formed from the coating composition by a catalyst comprising a hydrolyzable organometallic compound. Characterized by the fact that
The laminated glass according to claim 1. 5. The hydrolyzable organometallic compound,
The laminated glass according to claim 4, wherein the laminated glass is an organometallic compound containing titanium, zircon, aluminum or tin. 6. The laminated glass according to claim 1, wherein the laminated glass is a decorative glass. 7. The laminated glass according to claim 1, wherein the laminated glass is a decorative glass for a door.