WO2016006610A1 - 合わせガラス - Google Patents
合わせガラス Download PDFInfo
- Publication number
- WO2016006610A1 WO2016006610A1 PCT/JP2015/069543 JP2015069543W WO2016006610A1 WO 2016006610 A1 WO2016006610 A1 WO 2016006610A1 JP 2015069543 W JP2015069543 W JP 2015069543W WO 2016006610 A1 WO2016006610 A1 WO 2016006610A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- block copolymer
- film
- laminated
- glass
- copolymer hydride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
- B32B17/1022—Metallic coatings
- B32B17/10229—Metallic layers sandwiched by dielectric layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10779—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyester
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
- B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
- B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
- B32B17/10834—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid
- B32B17/10844—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid
- B32B17/10853—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid the membrane being bag-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
- B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
- B32B17/10871—Making laminated safety glass or glazing; Apparatus therefor by pressing in combination with particular heat treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/25—Incorporating silicon atoms into the molecule
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/086—Oxides of zinc, germanium, cadmium, indium, tin, thallium or bismuth
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/18—Metallic material, boron or silicon on other inorganic substrates
- C23C14/185—Metallic material, boron or silicon on other inorganic substrates by cathodic sputtering
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
- E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/416—Reflective
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/12—Pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/60—In a particular environment
- B32B2309/68—Vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
- B32B2315/08—Glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2386/00—Specific polymers obtained by polycondensation or polyaddition not provided for in a single one of index codes B32B2363/00 - B32B2383/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
Definitions
- the present invention is a laminated glass in which a glass plate, an intermediate film, a heat ray reflective film, an intermediate film, and a glass plate are laminated in this order, and is excellent in moisture resistance and durability using an intermediate film made of a specific material. It relates to laminated glass.
- a laminated glass having a heat ray reflecting function is useful as a window glass of an automobile, a window glass of a building, and the like because it prevents the incidence of heat rays, enhances the cooling effect in summer, and is effective for energy saving (Patent Document 1). ⁇ 3).
- a laminated glass having a heat ray reflecting function there are one having a structure in which a heat ray reflecting film is laminated on glass, and one having a structure in which a transparent film in which a heat ray reflecting film is laminated is sandwiched between glass plates.
- the latter laminated glass is excellent in mass productivity and industrially advantageous in that a transparent film laminated with a heat ray reflective film can be continuously produced.
- a laminated glass having a structure in which a transparent film laminated with a conventional heat ray reflective film is sandwiched is subjected to a durability test in an environment of temperature 50 ° C. and humidity 95% RH, which is required for safety glass for automobiles, Discoloration and whitening of the transparent film having the heat ray reflective film laminated from the edge of the laminated glass occurred, resulting in poor durability.
- Patent Document 3 proposes a laminated glass obtained by wrapping the entire end portion of a laminated glass with a sealing material.
- the laminated glass described in this document can be applied to the window fixed to the frame, but when the glass plate itself opens and closes like an automobile window, the thickness of the sealing material is not sufficient, and the moisture-proof effect There were cases where it was difficult to obtain.
- Patent Document 4 discloses a heat ray reflective laminated glass that uses glass with a film-less region provided at the glass edge by retreating the edge of the heat ray reflective film from the edge of the glass.
- Laminated glass in which the end of the film laminated with the heat ray reflective film is retracted from the edge of the glass plate toward the center side and a region without the film laminated with the heat ray reflective film is provided at the glass end is disclosed.
- the laminated glass described in these documents uses an intermediate film having high hygroscopicity and moisture permeability such as polyvinyl butyral film, ethylene / vinyl acetate copolymer film, polyurethane film, etc. for laminating the laminated glass. Therefore, in a more severe high-temperature and high-humidity environment or for a longer period of use, moisture permeates from the edge of the glass and whitening is likely to occur in the peripheral portion, and the durability is not always sufficient.
- Patent Document 6 proposes a laminated glass using an intermediate film made of a modified block copolymer hydride in which an alkoxysilyl group is introduced into a specific block copolymer hydride.
- the intermediate film is excellent in heat resistance, low hygroscopicity, etc., and can maintain strong adhesion to glass even after being exposed to a high temperature and high humidity environment, and heat ray reflective glass can be used.
- heat ray reflective glass can be used.
- this document does not describe encapsulation of a film in which a heat ray reflective film is laminated or a method thereof.
- the present invention has been made in view of the state of the prior art, and has solved the problems of conventional laminated glass having a heat ray reflecting function, that is, moisture resistance and durability, and is excellent in practical use. It aims at providing the laminated glass which has a characteristic.
- the present inventors have found that the first glass plate, the first intermediate film, the transparent film laminated with the heat ray reflective film, the second intermediate film, and the second glass Laminated glass formed by laminating in order of plates, modified block copolymer hydride in which alkoxysilyl group is introduced into specific block copolymer hydride [D] as the first and second intermediate films
- modified block copolymer hydride in which alkoxysilyl group is introduced into specific block copolymer hydride [D] as the first and second intermediate films
- the laminated glass using what was formed from [E] discovered that it had the outstanding heat ray reflective function, and was excellent in moisture resistance and durability, and came to complete this invention.
- the following laminated glasses (1) and (2) are provided.
- a laminated glass formed by sequentially laminating a first glass plate, a first intermediate film, a transparent film in which a heat ray reflective film is laminated, a second intermediate film, and a second glass plate,
- the first intermediate film and the second intermediate film are both formed from a modified block copolymer hydride [E]
- an alkoxysilyl group is introduced into the block copolymer hydride [D] obtained by hydrogenating 90% or more of all unsaturated bonds of the block copolymer [C].
- the block copolymer [C] has at least two polymer blocks [A] mainly composed of a repeating unit derived from an aromatic vinyl compound and at least 1 composed mainly of a repeating unit derived from a chain conjugated diene compound. Consisting of two polymer blocks [B], When the weight fraction of the whole polymer block [A] in the entire block copolymer is wA, and the weight fraction of the whole polymer block [B] in the whole block copolymer is wB, A laminated glass, wherein a ratio of wA to wB (wA: wB) is 30:70 to 60:40.
- the block copolymer [C] has at least two polymer blocks [A] mainly composed of a repeating unit derived from an aromatic vinyl compound and at least 1 composed mainly of a repeating unit derived from a chain conjugated diene compound. Consisting of two polymer blocks [B], When the weight fraction of the whole polymer block [A] in the entire block copolymer is wA, and the weight fraction of the whole polymer block [B] in the whole block copolymer is wB, The ratio of wA to wB (wA: wB) is 30: 70-60: 40, a.
- the transparent film laminated with the heat ray reflective film has an area smaller than the areas of the first and second glass plates, b.
- the transparent film laminated with the heat ray reflective film has an area smaller than the areas of the first and second intermediate films, c.
- the end of the transparent film on which the heat ray reflective film is laminated is disposed 2 mm or more apart over the entire circumference with respect to the ends of the first and second glass plates, d.
- the end of the transparent film on which the heat ray reflective film is laminated is disposed at a distance of 2 mm or more over the entire circumference with respect to the ends of the first and second intermediate films, e.
- Laminated glass in which the transparent film laminated with the heat ray reflective film is embedded in the first and second intermediate films.
- a laminated glass having an excellent heat ray reflecting function and excellent in moisture resistance and durability is provided.
- the laminated glass of the present invention is a laminated glass formed by laminating a first glass plate, a first intermediate film, a transparent film laminated with a heat ray reflective film, a second intermediate film, and a second glass plate in this order.
- the first and second intermediate films are formed from a specific modified block copolymer hydride [E].
- Modified block copolymer hydride [E] The modified block copolymer hydride [E] used in the present invention is obtained by introducing an alkoxylyl group into the precursor block copolymer hydride [D].
- the block copolymer hydride [D] is obtained by hydrogenating 90% or more of the total unsaturated bonds of the block copolymer [C], which is a precursor thereof.
- the block copolymer [C] is a precursor of the block copolymer hydride [D], and is a polymer containing at least two polymer blocks [A] and at least one polymer block [B]. It is.
- the polymer block [A] is a polymer block whose main component is a structural unit derived from an aromatic vinyl compound.
- the content of the structural unit derived from the aromatic vinyl compound in the polymer block [A] is usually 90% by weight or more, preferably 95% by weight or more, more preferably 99% by weight or more. If the content of the structural unit derived from the aromatic vinyl compound in the polymer block [A] is too small, the heat resistance of the first and / or second intermediate film may be lowered.
- the polymer block [A] may contain components other than the structural unit derived from the aromatic vinyl compound. Examples of the other components include structural units derived from chain conjugated dienes and / or structural units derived from other vinyl compounds.
- the content thereof is usually 10% by weight or less, preferably 5% by weight or less, more preferably 1% by weight or less based on the polymer block [A].
- the plurality of polymer blocks [A] contained in the block copolymer [C] may be the same as or different from each other as long as they satisfy the above range.
- the polymer block [B] is a polymer block whose main component is a structural unit derived from a chain conjugated diene compound.
- the content of the structural unit derived from the chain conjugated diene compound in the polymer block [B] is usually 70% by weight or more, preferably 80% by weight or more, more preferably 90% by weight or more.
- flexibility is imparted to the first and / or second interlayer film, which is preferable.
- the polymer block [B] may contain components other than the structural unit derived from the chain conjugated diene compound. Examples of other components include structural units derived from aromatic vinyl compounds and / or structural units derived from other vinyl compounds. The content thereof is usually 30% by weight or less, preferably 20% by weight or less, more preferably 10% by weight or less based on the polymer block [B]. If the content of the structural unit derived from the aromatic vinyl compound in the polymer block [B] is too large, the flexibility of the first and / or second intermediate film at low temperatures may be reduced.
- the block copolymer [C] has a plurality of polymer blocks [B]
- the polymer blocks [B] may be the same as or different from each other.
- aromatic vinyl compound examples include styrene; ⁇ -methylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, 2,4-diisopropylstyrene, 2,4-dimethylstyrene, 4-t-butylstyrene, Styrenes having a C 1-6 alkyl group as a substituent, such as 5-t-butyl-2-methylstyrene; halogen atoms as a substituent, such as 4-chlorostyrene, dichlorostyrene, 4-monofluorostyrene Styrenes having 1 to 6 carbon atoms as substituents such as 4-methoxystyrene; styrenes having aryl groups as substituents such as 4-phenylstyrene; 1-vinylnaphthalene, And vinyl naphthalenes such as 2-vinyl naphthalene; Among these, from
- chain conjugated diene compound examples include 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene and the like, and do not contain a polar group from the viewpoint of hygroscopicity.
- a chain conjugated diene compound is preferred, and 1,3-butadiene and isoprene are particularly preferred from the viewpoint of industrial availability.
- vinyl compounds include chain vinyl compounds, cyclic vinyl compounds, unsaturated cyclic acid anhydrides, unsaturated imide compounds, and the like. These compounds may have a substituent such as a nitrile group, an alkoxycarbonyl group, a hydroxycarbonyl group, or a halogen atom.
- ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-dodecene, 1-eicosene Does not contain polar groups such as chain olefins having 2 to 20 carbon atoms such as 4-methyl-1-pentene and 4,6-dimethyl-1-heptene; cyclic olefins having 5 to 20 carbon atoms such as vinylcyclohexane; Are preferred, chain olefins having 2 to 20 carbon atoms are more preferred, and ethylene and propylene are particularly preferred.
- the block copolymer [C] is a precursor of the block copolymer hydride [D], and is a polymer containing at least two polymer blocks [A] and at least one polymer block [B]. .
- the number of polymer blocks [A] in the block copolymer [C] is usually 5 or less, preferably 4 or less, more preferably 3 or less.
- the polymer block [A] when there are a plurality of polymer blocks [A] and / or polymer blocks [B], the polymer block [A] has the largest weight average molecular weight.
- the weight average molecular weight is Mw (A) max
- the weight average molecular weight of the polymer block having the smallest weight average molecular weight is Mw (A) min
- the weight average molecular weight of the polymer block is Mw (B) max and the weight average molecular weight of the polymer block having the smallest weight average molecular weight is Mw (B) min
- the ratio of Mw (A) max to Mw (A) min (Mw (A) max / Mw (A) min) and the ratio of Mw (B) max to Mw (B) min (Mw (B) max / Mw (B) min) are each 4.0 or less, preferably 3.5 or less
- Ri is preferably 3.0 or less.
- the form of the block of the block copolymer [C] is not particularly limited, and may be a chain type block or a radial type block, but a chain type block is preferable because of excellent mechanical strength.
- the most preferred form of the block copolymer [C] is a triblock copolymer ([A]-[B]-[A]) in which the polymer block [A] is bonded to both ends of the polymer block [B].
- the polymer block [B] is bonded to both ends of the polymer block [A], and the polymer block [A] is bonded to the other end of the both polymer blocks [B]. [A]-[B]-[A]-[B]).
- the weight fraction of the entire polymer block [A] in the block copolymer [C] in the entire block copolymer is wA
- the total polymer block [B] is in the entire block copolymer.
- the ratio of wA to wB is 30:70 to 60:40, preferably 35:65 to 55:45, more preferably 40:60 to 50: 50.
- wA is too high, the heat resistance of the first and / or second intermediate film according to the present invention is increased, but the flexibility is low, and the glass is easily broken by low-temperature thermal shock.
- wA is too low, the heat resistance of the first and / or second intermediate film tends to decrease.
- the molecular weight of the block copolymer [C] is a polystyrene-equivalent weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) using tetrahydrofuran (THF) as a solvent, and is usually 40,000 to 200. , Preferably 50,000 to 150,000, more preferably 60,000 to 100,000. Further, the molecular weight distribution (Mw / Mn) of the block copolymer [C] is preferably 3 or less, more preferably 2 or less, and particularly preferably 1.5 or less.
- the manufacturing method of block copolymer [C] is not specifically limited, A well-known method is employable.
- the aromatic vinyl compound is a main component (the content of the aromatic vinyl compound is usually 90% by weight or more, preferably 95% by weight or more, more preferably 99% by weight or more by a method such as living anion polymerization. The same shall apply hereinafter.)
- the monomer mixture (a) and the chain conjugated diene compound as main components (the content of the chain conjugated diene compound is usually 70% by weight or more, preferably 80% by weight or more, more Preferably 90% by weight or more.
- Coupling agents used in the latter method include methyldichlorosilane, dimethyldichlorosilane, methyltrichlorosilane, butyltrichlorosilane, tetrachlorosilane, dibromoethane, tetrachlorotin, butyltrichlorotin, tetrachlorogermanium, bis (trichlorosilyl) Halogen compounds such as ethane; Epoxy compounds such as epoxidized soybean oil; Diester compounds of dicarboxylic acids such as diethyl adipate, dimethyl adipate, dimethyl terephthalic acid and diethyl terephthalic acid; Polyvinyl compounds such as divinylbenzene; Polyisocyanates; It is done.
- the block copolymer hydride [D] is a total unsaturated bond of the block copolymer [C], that is, a carbon-carbon unsaturated bond in the main chain and side chain of the block copolymer [C], and , Hydrogenated aromatic carbon-carbon unsaturated bond.
- the hydrogenation rate is usually 90% or more, preferably 97% or more, more preferably 99% or more. The higher the hydrogenation rate, the better the weather resistance, heat resistance and transparency of the molded body.
- the hydrogenation rate of the block copolymer hydride [D] can be determined by measuring 1 H-NMR of the block copolymer hydride [D].
- the hydrogenation method and reaction mode of the unsaturated bond are not particularly limited, and may be carried out according to a known method, but a hydrogenation method that can increase the hydrogenation rate and has little polymer chain scission reaction is preferable.
- Examples of such hydrogenation methods include the methods described in WO2011 / 096389 pamphlet, WO2012 / 043708 pamphlet and the like.
- the block copolymer hydride [D] can be recovered from the resulting solution.
- the form of the recovered block copolymer hydride [D] is not limited, it can usually be formed into a pellet shape and used for the subsequent introduction reaction of alkoxysilyl groups.
- the molecular weight of the block copolymer hydride [D] is a polystyrene-equivalent weight average molecular weight (Mw) measured by GPC using THF as a solvent, and is usually 40,000 to 200,000, preferably 50,000 to 150. , 000, more preferably 60,000 to 100,000.
- the molecular weight distribution (Mw / Mn) of the block copolymer hydride [D] is preferably 3 or less, more preferably 2 or less, and particularly preferably 1.5 or less. When Mw and Mw / Mn are within the above ranges, the heat resistance and mechanical strength of the intermediate film are good.
- Modified block copolymer hydride [E] The modified block copolymer hydride [E] used in the present invention is obtained by introducing an alkoxysilyl group into the block copolymer hydride [D].
- alkoxysilyl group examples include a tri (C1-6 alkoxy) silyl group such as a trimethoxysilyl group and a triethoxysilyl group; a methyldimethoxysilyl group, a methyldiethoxysilyl group, an ethyldimethoxysilyl group, and an ethyldiethoxysilyl group.
- the alkoxysilyl group is bonded to the block copolymer hydride [D] via a divalent organic group such as an alkylene group having 1 to 20 carbon atoms or an alkyleneoxycarbonylalkylene group having 2 to 20 carbon atoms. You may do it.
- the amount of the alkoxysilyl group introduced into the block copolymer hydride [D] is usually 0.1 to 10 parts by weight, preferably 0.2 to 100 parts by weight with respect to 100 parts by weight of the block copolymer hydride [D]. 5 parts by weight, more preferably 0.3 to 3 parts by weight. If the introduction amount of the alkoxysilyl group is too large, cross-linking of the alkoxysilyl groups decomposed with a small amount of moisture or the like proceeds before melt-molding the resulting modified block copolymer hydride [E] into a desired shape, Problems such as gelation and a decrease in moldability due to a decrease in fluidity at the time of melting easily occur.
- the introduction amount of the alkoxysilyl group is too small, a problem that a sufficient adhesive force for bonding the intermediate film to the glass plate cannot be obtained easily occurs.
- the introduction of the alkoxysilyl group can be confirmed by IR spectrum.
- the amount introduced can be calculated by 1 H-NMR spectrum.
- the method for producing the modified block copolymer hydride [E] is not particularly limited, but the block copolymer hydride [D] is reacted with an ethylenically unsaturated silane compound in the presence of an organic peroxide.
- a method of introducing an alkoxysilyl group is preferred.
- the ethylenically unsaturated silane compound to be used is not particularly limited as long as it is graft-polymerized with the block copolymer hydride [D] and introduces an alkoxysilyl group into the block copolymer hydride [D].
- vinyltrialkoxysilanes such as vinyltrimethoxysilane and vinyltriethoxysilane; dialkoxyalkylvinylsilanes such as dimethoxymethylvinylsilane and diethoxymethylvinylsilane; allyltrialkoxysilanes such as allyltrimethoxysilane and allyltriethoxysilane; p -Styryltrialkoxysilanes such as styryltrimethoxysilane; 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, etc.
- Methacryloxy alkyl dialkoxy silane; and the like are suitably used.
- (meth) acryloxy means acryloxy or methacryloxy.
- the amount of the ethylenically unsaturated silane compound used is usually 0.1 to 10 parts by weight, preferably 0.2 to 5 parts by weight, more preferably 0, per 100 parts by weight of the block copolymer hydride [D]. .3 to 3 parts by weight.
- peroxide those having a one-minute half-life temperature of 170 to 190 ° C. are preferably used.
- t-butyl cumyl peroxide, dicumyl peroxide, di-t-hexyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, di-t-butyl peroxide, Di (2-t-butylperoxyisopropyl) benzene or the like is preferably used.
- the amount of peroxide used is usually 0.05 to 2 parts by weight, preferably 0.1 to 1 part by weight, more preferably 0.2 to 100 parts by weight per 100 parts by weight of the block copolymer hydride [D]. 0.5 parts by weight.
- the method of reacting the block copolymer hydride [D] with the ethylenically unsaturated silane compound in the presence of a peroxide is not particularly limited.
- an alkoxysilyl group can be introduced into the block copolymer hydride [D] by kneading at a desired temperature for a desired time in a biaxial kneader.
- the kneading temperature by the biaxial kneader is usually 180 to 220 ° C, preferably 185 to 210 ° C, more preferably 190 to 200 ° C.
- the heat kneading time is usually about 0.1 to 10 minutes, preferably about 0.2 to 5 minutes, and more preferably about 0.3 to 2 minutes. What is necessary is just to knead
- the molecular weight of the modified block copolymer hydride [E] is not substantially different from the molecular weight of the block copolymer hydride [D] used as a raw material because the amount of alkoxysilyl groups introduced is small.
- the cross-linking reaction and cleavage reaction of the polymer occur simultaneously, and the molecular weight distribution of the modified block copolymer hydride [E] is large. Become.
- the molecular weight of the modified block copolymer hydride [E] is a polystyrene-equivalent weight average molecular weight (Mw) measured by GPC using THF as a solvent, and is usually 40,000 to 200,000, preferably 50,000 to 150,000, more preferably 60,000 to 100,000.
- Mw / Mn The molecular weight distribution (Mw / Mn) is preferably 3.5 or less, more preferably 2.5 or less, and particularly preferably 2.0 or less. When Mw and Mw / Mn are within the above ranges, the heat resistance and mechanical strength of the interlayer film used in the present invention are maintained.
- modified block copolymer hydride [E] can be used as a resin composition which mix
- Preferred compounding agents include softeners and tackifiers for adjusting flexibility, lowering of bonding temperature and adhesion to metals, etc .; antioxidant for enhancing heat stability, light stability, workability, etc. Agents, ultraviolet absorbers, light stabilizers, and anti-blocking agents.
- the softening agent is blended to improve the flexibility of the modified block copolymer hydride [E].
- the softening agent include low molecular weight hydrocarbon polymers.
- the low molecular weight hydrocarbon polymer is preferably one that can be uniformly dissolved or dispersed in the hydride of the modified block copolymer [E], and is preferably a hydrocarbon polymer having a number average molecular weight of 300 to 5,000.
- hydrocarbon polymer examples include low molecular weight substances such as polyisobutylene, polybutene, poly-4-methylpentene, poly-1-octene, ethylene / ⁇ -olefin copolymer, and hydrides thereof; polyisoprene, Examples thereof include low molecular weight substances such as polyisoprene-butadiene copolymer and hydrides thereof.
- a softener can be used individually by 1 type or in combination of 2 or more types.
- a low molecular weight polyisobutylene hydride and a low molecular weight polyisoprene hydride are particularly advantageous in that a modified block copolymer hydride [E] that maintains transparency and light resistance and has an excellent softening effect can be obtained.
- the blending amount of the low molecular weight hydrocarbon polymer is usually 20 parts by weight or less, preferably 10 parts by weight or less, more preferably 5 parts by weight or less with respect to 100 parts by weight of the modified block copolymer hydride [E]. It is. Increasing the blending amount of the low molecular weight hydrocarbon polymer increases the flexibility of the interlayer film, but tends to decrease the heat resistance and increase the amount of eluate.
- the tackifier is blended in order to impart tackiness to the modified block copolymer hydride [E] and to enhance adhesion to metal.
- the tackifier include rosin resins; terpene resins; coumarone / indene resins; styrene resins; aliphatic, alicyclic or aromatic petroleum resins; and hydrogenated products thereof. These tackifiers can be used alone or in combination of two or more.
- the compounding quantity of a tackifier is 20 parts weight or less normally with respect to 100 weight part of modified block copolymer hydrides [E], Preferably it is 10 parts weight or less, More preferably, it is 5 parts weight or less. Increasing the amount of the tackifier increases the tackiness of the interlayer film, but tends to decrease the heat resistance and increase the amount of eluate.
- Antioxidants, ultraviolet absorbers, light stabilizers, antiblocking agents and the like blended in the modified block copolymer hydride [E] can be used singly or in combination of two or more.
- the compounding amount of these compounding agents is usually 10 parts by weight or less, preferably 5 parts by weight or less, more preferably 1 part by weight or less based on 100 parts by weight of the modified block copolymer hydride [E].
- antioxidants examples include phosphorus antioxidants, phenol antioxidants, sulfur antioxidants and the like.
- Phosphorous antioxidants include triphenyl phosphite, diphenylisodecyl phosphite, phenyl diisodecyl phosphite, tris (nonylphenyl) phosphite, tris (dinonylphenyl) phosphite, tris (2,4-di-t -Butylphenyl) phosphite, monophosphite such as 10- (3,5-di-t-butyl-4-hydroxybenzyl) -9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide 4,4′-butylidene-bis (3-methyl-6-tert-butylphenyl-di-tridecyl phosphite), 4,4′-isopropylidene-bis (phenyl-d
- phenolic antioxidants examples include 2-t-butyl-6- (3-t-butyl-2-hydroxy-5-methylbenzyl) -4-methylphenyl acrylate and 2,4-di-t-amyl-6.
- Acrylate compounds such as-(1- (3,5-di-t-amyl-2-hydroxyphenyl) ethyl) phenyl acrylate and the like described in JP-A Nos.
- sulfur-based antioxidants examples include dilauryl 3,3-thiodipropionate, dimyristyl 3,3'-thiodipropionate, distearyl 3,3-thiodipropionate, lauryl stearyl 3,3-thiodipro Pionate, pentaerythritol-tetrakis ( ⁇ -lauryl-thio-propionate), 3,9-bis (2-dodecylthioethyl) -2,4,8,10-tetraoxaspiro [5.5] undecane, etc. It is done.
- ultraviolet absorbers examples include oxybenzophenone compounds, benzotriazole compounds, salicylic acid ester compounds, benzophenone compounds, benzotriazole compounds, acrylonitrile compounds, triazine compounds, nickel complex compounds, inorganic powders, and the like.
- Examples of light stabilizers include 2,2,6,6-tetramethyl-4-piperidylbenzoate, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6 , 6-Pentamethyl-4-piperidyl) -2- (3,5-di-t-butyl-4-hydroxybenzyl) -2-n-butyl malonate, 4- (3- (3,5-di-t -Butyl-4-hydroxyphenyl) propionyloxy) -1- (2- (3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyloxy) ethyl) -2,2,6,6- Examples include hindered amine light stabilizers such as tetramethylpiperidine.
- the method for obtaining the resin composition containing the modified block copolymer hydride [E] and the compounding agent is not particularly limited, and a known method can be adopted.
- the block copolymer hydride [D] is melted with a roll, a brabender, an extruder or the like, the low molecular weight hydrocarbon polymer and / or the tackifier is kneaded, and then the block copolymer hydride [ D] and an ethylenically unsaturated silane compound are reacted in the presence of a peroxide to obtain a modified block copolymer hydride [E], and then another blending agent is blended; block copolymer hydrogen Examples include a method of
- 1st and 2nd intermediate film The 1st and 2nd intermediate film shape
- the first intermediate film and the second intermediate film may be the same as or different from each other as long as they are formed from the modified block copolymer hydride [E].
- the method for molding the first and second interlayer films is not particularly limited, and a known melt extrusion molding method, inflation molding method, calendar molding method, or the like can be applied.
- the first and second intermediate films are formed from the above-mentioned modified block copolymer hydride [E], and contain an organic peroxide or a crosslinking aid for imparting thermal crosslinkability. Since it is not necessary, the selection range of the melt molding temperature is wide. For example, when the first and second intermediate films are formed by a melt extrusion molding method, the resin temperature is usually within the range of 170 to 230 ° C., preferably 180 to 220 ° C., more preferably 190 to 210 ° C. Selected. When the resin temperature is too low, the fluidity is deteriorated, and the first and second intermediate films are liable to cause defects such as the skin and die line, and the extrusion speed of the first and second intermediate films is increased.
- the thickness of the first and second intermediate films is not particularly limited, but is usually in the range of 0.1 to 5 mm, preferably 0.2 to 2 mm, more preferably 0.3 to 1 mm.
- the thicknesses of the first intermediate film and the second intermediate film may be the same or different.
- the thickness of the first and second intermediate films is smaller than 0.1 mm, as will be described later, the transparent film on which the heat ray reflective film is laminated is sandwiched between the first and second glass plates. When the glass plates are bonded, there is a risk that the glass will break due to a difference in thickness at the end of the laminated glass without the transparent film on which the heat ray reflective film is laminated.
- the thickness of the first and second interlayer films is larger than 5 mm, the light transmittance in the entire laminated glass is reduced, and the amount of the modified block copolymer hydride [E] used is increased. May decrease.
- the first and second intermediate films are single layer sheets made of a composition obtained by blending the modified block copolymer hydride [E] with the above-mentioned compounding agent as necessary, the block copolymer hydrogen
- a modified block copolymer hydride [E] is used on one side or both sides of a sheet comprising a two-kind three-layer coextrusion molding method; a block copolymer hydrogenation [D].
- the thickness of the layer made of the modified block copolymer hydride [E] is usually 0.005 mm or more, preferably 0.01 mm or more, more preferably 0.015 mm. That's it.
- the upper limit of the thickness of the layer made of the modified block copolymer hydride [E] is not particularly limited, but is usually less than 4.995 mm. If the thickness of the layer composed of the modified block copolymer hydride [E] is smaller than 0.005 mm, sufficient adhesion to the glass plate is difficult to obtain.
- the surface of the first and / or second intermediate film can be flat or embossed.
- a release film can also be stored on one side of the first and / or second interlayer films.
- stacked the heat ray reflective film is a film whose light transmittance of wavelength 550nm is 50% or more, Preferably it is 60% or more, More preferably, it is 70% or more.
- the transparent film in which the heat ray reflective film is laminated is, for example, a heat ray reflective film in which a metal oxide layer and a metal layer are alternately laminated on a transparent resin film as a base material, or a dielectric made of a metal oxide or the like.
- a heat ray reflective film or the like in which a high refractive index layer and a low refractive index layer are alternately laminated in multiple layers is formed.
- a layer having another function such as a protective layer may be formed on the surface of the heat ray reflective film.
- the resin film is not particularly limited as long as it is transparent (light transmittance at a wavelength of 550 nm is 50% or more, preferably 60% or more, more preferably 70% or more).
- a polyester resin such as polyethylene terephthalate or polyethylene naphthalate; an acrylic resin such as polymethyl methacrylate; a cycloolefin polymer; a polycarbonate; a polyether sulfone; a polyarylate;
- a film made of a polyester resin is preferable, and a film made of polyethylene terephthalate is particularly preferable.
- the thickness of the resin film is not particularly limited, and is usually 10 to 300 ⁇ m, preferably 20 to 200 ⁇ m, more preferably 40 to 100 ⁇ m.
- a metal film made of a metal such as Au, Ag, Cu, Al, Pd, Pt, Sn, In, Zn, Ti, Cd, Fe, Co, Cr, Ni; two or more of these metals
- An alloy film made of an alloy composed of: a multilayer film obtained by laminating dielectric layers made of TiO 2 , Nb 2 O 5 , Ta 2 O 5 , SiO 2 , Al 2 O 3 , ZrO 2 , MgF 2, etc .; Etc. can be used suitably.
- a multilayer film (infrared reflective film) formed by laminating dielectric films in multiple layers is particularly preferable because it transmits electromagnetic waves and can be used in a vehicle such as an automobile without impairing the communication function of a communication device in the vehicle.
- the transparent film on which the heat ray reflective film is laminated a film generally commercially available as a heat ray reflective film, a heat shield film, an infrared reflective film, an infrared cut film, or the like can also be used.
- Laminated glass The laminated glass of the present invention is formed by laminating at least a first glass plate, a first intermediate film, a transparent film in which a heat ray reflective film is laminated, a second intermediate film, and a second glass plate. Laminated glass, wherein the first and second intermediate films are formed from the modified block copolymer hydride [E]. That is, the laminated glass of the present invention comprises a modified block copolymer hydride [E], a transparent film in which the first glass and the heat ray reflective film are laminated, a transparent film in which the heat ray reflective film is laminated, and the second glass. It is formed by firmly bonding and integrating.
- the first glass plate and the second glass plate to be used may be the same or different in thickness, material, etc., and a transparent conductive film, an infrared reflective film, etc. It may be given.
- the thickness of the glass plate to be used is not particularly limited, but is usually about 0.5 to 10 mm.
- An ultrathin glass plate having a thickness of about 0.05 to 0.4 mm can also be used.
- Glass plates having different thicknesses can be used as in the case of (plate).
- the modified block copolymer hydride [E] is bonded to glass plates with different thermal expansion coefficients in order to maintain flexibility in a wide temperature range from a low temperature range of about ⁇ 50 ° C. to a high temperature range of about + 120 ° C. It is also possible to reduce the glass breakage by a sudden temperature change.
- the material of the glass plate to be used is not particularly limited.
- aluminosilicate glass, aluminoborosilicate glass, uranium glass, potassium glass, silicate glass, crystallized glass, germanium glass, quartz glass, soda glass, lead glass, barium examples thereof include ⁇ silicate glass and ⁇ silicate glass.
- first glass plate In order to produce laminated glass, at least a first glass plate, a first intermediate film, a transparent film laminated with a heat ray reflective film, a second intermediate film, and a second glass plate are stacked in this order, and a vacuum laminator is attached. It is possible to use a method of bonding under heating and pressure reduction, a method of putting in a heat-resistant rubber bag capable of pressure reduction and degassing, and then bonding under heating and pressure using an autoclave.
- the laminated glass of the present invention uses an intermediate film (first and second intermediate films) made of a modified block copolymer hydride [E] having low moisture absorption and moisture permeability and excellent adhesion. It is said. Therefore, even when used in a high temperature and high humidity environment, problems such as whitening of the transparent film in which the heat ray reflective films sandwiched between the first and second intermediate films are less likely to occur.
- first and second intermediate films made of a modified block copolymer hydride [E] having low moisture absorption and moisture permeability and excellent adhesion.
- the following measures a to e are preferably taken in order to more effectively reduce the occurrence of defects even when used in a high temperature and high humidity environment.
- a As the transparent film on which the heat ray reflective film is laminated, a film having an area smaller than the areas of the first and second glass plates is used.
- the laminated glass of the present invention usually has a rectangular or square shape.
- the transparent film on which the heat ray reflective film is laminated is the first and second glass in both the one direction of the first and second glass plates and the direction (vertical direction and horizontal direction) perpendicular thereto. It is preferable that it is smaller than a board.
- a 294 mm ⁇ 294 mm size film is used as a transparent film on which a heat ray reflective film is laminated.
- the ratio of the area of the transparent film on which the heat ray reflective film is laminated to the area of the first and second glass plates is preferably 90% to 100%, more preferably 95 to 100%, and still more preferably 95 to 99%. is there.
- the transparent film on which the heat ray reflective film is laminated a film having an area smaller than the areas of the first and second intermediate films is used.
- the laminated glass of the present invention usually has a rectangular or square shape.
- the transparent film in which the heat ray reflective film is laminated is the first and second intermediates in both the one direction of the first and second intermediate films and the direction perpendicular to them (the vertical direction and the horizontal direction). It is preferably smaller than the film.
- a 300 mm ⁇ 300 mm film is used as the first and second intermediate films
- a 194 mm ⁇ 294 mm film is used as the transparent film on which the heat ray reflective film is laminated.
- the ratio of the area of the transparent film on which the heat ray reflective film is laminated to the area of the first and second intermediate films is preferably 90% to 100%, more preferably 95 to 100%, and still more preferably 95 to 99%. is there.
- the transparent film on which the heat ray reflective film is laminated is such that the edge of the transparent film is 2 mm or more, preferably 2 mm to 10 mm, more preferably 2 mm to 5 mm over the entire circumference with respect to the edges of the first and second glass plates. Place them apart.
- a transparent film having a size of 294 mm ⁇ 294 mm and laminated with a heat ray reflective film is used as the first and second glass plates. Both are arranged at the center of the first and second glass plates at a distance of 3 mm from the ends.
- the transparent film on which the heat ray reflective film is laminated is such that the end of the transparent film is 2 mm or more, preferably 2 mm to 10 mm, more preferably 2 mm to 5 mm over the entire circumference with respect to the ends of the first and second intermediate films. Place them apart.
- a transparent film having a size of 294 mm ⁇ 294 mm and laminated with a heat ray reflective film is used as the first and second intermediate films. Both are arranged at the center of the first and second intermediate films at a distance of 3 mm from both ends.
- stacked the heat ray reflective film be the state embedded by the 1st and 2nd intermediate film.
- “embedding” means “a state in which the heat ray reflective film is embedded in the first and second intermediate films without being in contact with glass or outside air. In this case, the first intermediate film at the end portion” And the interface of the second intermediate film are also bonded and integrated.
- size of a 1st and 2nd intermediate film is the same as a 1st and 2nd glass plate from an adhesive viewpoint.
- the laminated glass of the present invention comprises a transparent film / second intermediate film / display element / third intermediate film / second glass plate laminated with a first glass plate / first intermediate film / heat ray reflective film, 1 glass plate / first intermediate film / transparent film laminated with heat ray reflective film / second intermediate film / light control element / third intermediate film / second glass plate, etc. It may be.
- a display element and a light control element are composed of a liquid crystal element, a thermochromic element, a photochromic element, an electrochromic element, and the like, and in many cases, are easily deteriorated by moisture and oxygen entering from the edge of the laminated glass, like the heat ray reflective film.
- the same configuration as the laminated glass of the present invention that is, the ends of the display element and the light control element are arranged 2 mm or more apart over the entire circumference with respect to the ends of the first and second intermediate films, First glass plate / first intermediate film / display element / second intermediate film / second glass plate, first glass plate / first intermediate film / light control element / second intermediate film / second
- the configuration of the glass plate 2 and the like is also effective for preventing deterioration of the display element and the light control element in a high temperature and high humidity environment.
- the laminated glass of the present invention is useful as a window glass for buildings, glass for roofs, heat insulating wall materials for rooms, windshields for automobiles, glass for sunroofs, window glass for railway vehicles and ships and the like.
- test piece does not show any changes such as cracks, blistering, peeling, discoloration, foam, turbidity, etc., “ ⁇ (good)”, the test piece has no cracks, blistering, peeling, discoloration, Even if there is a bubble or turbidity, the case where it is limited to within 10 mm from the end of the test piece is “O (acceptable)”, the test piece has cracks, blisters, and peeling, and the discoloration is 10 mm or more inside from the end of the test piece. The case where there was any change such as foam and turbidity was evaluated as “ ⁇ (defect)”.
- the reaction solution was filtered to remove the hydrogenation catalyst, and the filtrate was then subjected to pentaerythrityl tetrakis [3- (3,5-di-t-butyl-4, which is a phenolic antioxidant. -Hydroxyphenyl) propionate] (product name “Songnox 1010”, manufactured by Koyo Chemical Laboratory Co., Ltd.) 1.0 part of xylene solution in which 0.1 part was dissolved was added and dissolved. Next, the solution was filtered through a metal fiber filter (pore size 0.4 ⁇ m, manufactured by Nichidai Co., Ltd.) to remove minute solids.
- a metal fiber filter pore size 0.4 ⁇ m, manufactured by Nichidai Co., Ltd.
- cyclohexane, xylene and other volatile components as solvents are removed from the solution at a temperature of 260 ° C. and a pressure of 0.001 MPa or less using a cylindrical concentrating dryer (product name “Contro”, manufactured by Hitachi, Ltd.). did.
- the molten polymer is continuously filtered at a temperature of 260 ° C. with a polymer filter (manufactured by Fuji Filter Co., Ltd.) equipped with a stainless sintered filter having a pore diameter of 5 ⁇ m connected to a concentrating dryer, and then the molten polymer is stranded from the die.
- the pelletized block copolymer hydride [D1] had a weight average molecular weight (Mw) of 49,500, a molecular weight distribution (Mw / Mn) of 1.10, and a hydrogenation rate of almost 100%.
- Modified block copolymer hydride [E1] pellets, T-die type film melt extruder (T-die width 600 mm) having an extruder equipped with a 40 mm ⁇ screw, cast roll (with embossed pattern), and sheet take-up Using an extrusion sheet molding machine equipped with an apparatus, extrusion molding was performed under molding conditions of a molten resin temperature of 200 ° C., a T-die temperature of 200 ° C., and a cast roll temperature of 60 ° C., and the modified block copolymer hydride [E1] An intermediate film [F1] (thickness: 380 ⁇ m, width: 500 mm) was formed. The obtained intermediate film [F1] was wound up and collected on a roll.
- the pelletized block copolymer hydride [D2] had a weight average molecular weight (Mw) of 53,600, a molecular weight distribution (Mw / Mn) of 1.11 and a hydrogenation rate of almost 100%.
- the pelletized block copolymer hydride [D3] had a weight average molecular weight (Mw) of 68,800, a molecular weight distribution (Mw / Mn) of 1.09, and a hydrogenation rate of almost 100%.
- the pelletized block copolymer hydride [D4] had a weight average molecular weight (Mw) of 73,400, a molecular weight distribution (Mw / Mn) of 1.11 and a hydrogenation rate of almost 100%.
- Modified block copolymer weight is the same as in Reference Example 1 except that pellets of the modified block copolymer hydride [E4] are used and the molten resin temperature is 220 ° C, the T die temperature is 220 ° C, and the cast roll temperature is 70 ° C.
- the isobutene polymer hydride (product name “Pearl Ream (registered trademark) 24”, manufactured by NOF Corporation) from the side feeder is in a ratio of 10 parts to 100 parts of the modified block copolymer hydride [E1].
- the isobutene polymer hydride [E1] are added continuously, extruded into strands, air cooled, cut with a pelletizer, and mixed with a modified block copolymer hydride [E1] and an isobutene polymer hydride. 105 parts of pellets of polymer hydride resin composition [E5] were obtained.
- An intermediate film [F5] composed of a modified block copolymer hydride resin composition [E5] in the same manner as in Reference Example 1 except that pellets of the modified block copolymer hydride resin composition [E5] are used. A thickness of 760 ⁇ m and a width of 500 mm).
- Example 1 From the sheet of the intermediate film [F1] produced in Reference Example 1, from a test piece having a length of 300 mm and a width of 300 mm, and from the transparent film [G1] obtained by laminating the heat ray reflective film produced in Reference Example 6, the length is 300 mm and the width is 300 mm. Each test piece was cut out. Next, the test piece of the intermediate film [F1] and the test piece of the transparent film [G1] are placed between the two glass plates of thickness 3.0 mm, length 300 mm, width 300 mm. The intermediate layers [F1] / film [G1] / second intermediate film [F1] / second glass plate 1 were laminated.
- the laminate was put in a rubber bag, degassed and sealed, and then put in an autoclave and treated at a temperature of 140 ° C. and a pressure of 0.8 MPa for 30 minutes to prepare a laminated glass test piece [H1] -1. .
- the end of the film [G1] is not embedded in the intermediate film [F1].
- a laminated glass test piece [H1] -2 having a length of 70 mm and a width of 50 mm was also prepared for measuring light transmittance.
- the laminated glass test piece [H1] -2 had a light transmittance of 75% at a wavelength of 550 nm and a light transmittance of 4% at a wavelength of 2500 nm.
- the laminated glass test piece [H1] -1 was only whitened in a portion within 5 mm from the edge of the laminated glass after being kept in an environment of 50 ° C. and 95% RH. (Acceptable) ”. Further, the laminated glass test piece [H1] -1 was not changed in appearance after being held in boiling water, and the evaluation of heat resistance was “ ⁇ (good)”.
- Example 2 A test piece having a length of 294 mm and a width of 294 mm was cut out from the transparent film [G1] on which the heat ray reflective film produced in Reference Example 6 was laminated, and a distance of 3 mm in both the vertical direction and the horizontal direction from the edge of the sheet of the intermediate film [F1].
- the first glass plate / the first intermediate film [F1] / the film [G1] / the second glass in the same manner as in Example 1, except that the intermediate film [F1] is separated and placed in the center of the sheet.
- a laminated glass test piece [H2] having a layer configuration of intermediate film [F1] / second glass plate was produced. In the test piece [H2], an area without the film [G1] is formed in a width of 3 mm around the laminated glass, and the end of the film [G1] is embedded with the first and second intermediate films [F1]. Has been.
- Example 3 The first glass plate / first intermediate film [F2] / film [G1] / second intermediate film in the same manner as in Example 1 except that the intermediate film [F2] produced in Reference Example 2 was used.
- a laminated glass test piece [H3] -2 having a length of 70 mm and a width of 50 mm was also prepared for light transmittance measurement.
- the laminated glass test piece [H3] -2 had a light transmittance of 75% at a wavelength of 550 nm and a light transmittance of 4% at a wavelength of 2500 nm.
- the laminated glass test piece [H3] -1 only whitening was observed in a portion within 2 mm from the edge of the laminated glass, and the evaluation of moisture resistance was “ ⁇ (acceptable)”.
- the laminated glass test piece [H3] -1 showed no change in appearance, and the evaluation of heat resistance was “ ⁇ (good)”.
- Example 4 The first glass plate / first intermediate film [F2] / film [G1] / second intermediate film in the same manner as in Example 2 except that the intermediate film [F2] produced in Reference Example 2 was used.
- Example 5 Using the intermediate film [F5] produced in Reference Example 5 and replacing the blue plate glass (first and second glass) with a white plate glass of thickness 3.0 mm, length 300 mm, width 300 mm, in the same manner as in Example 1, a laminated glass test comprising a layer configuration of the first glass plate / first intermediate film [F5] / film [G1] / second intermediate film [F5] / second glass plate A piece [H5] -1 was produced. In the test piece [H5] -1, the end of the film [G1] is not embedded with the first and second intermediate films [F5]. Similarly, a laminated glass test piece [H5] -2 having a length of 70 mm and a width of 50 mm was also prepared for light transmittance measurement using a white plate glass having a thickness of 3.0 mm.
- Laminated glass test piece [H5] -2 has a light transmittance of 75% at a wavelength of 550 nm and a wavelength of 25 The light transmittance at 00 nm was 4%.
- the laminated glass test piece [H5] -1 only whitening was observed only in a portion within 1 mm from the edge of the laminated glass, and the evaluation of moisture resistance was “ ⁇ (acceptable)”.
- the laminated glass specimen [H5] -1 showed no change in appearance, and the heat resistance evaluation was “ ⁇ ⁇ (good)”.
- the laminated glass test piece [H6] -2 had a light transmittance of 75% at a wavelength of 550 nm and a light transmittance of 4% at a wavelength of 2500 nm.
- the laminated glass test piece [H6] -1 no whitening or other changes were observed over the entire laminated glass, and the evaluation of moisture resistance was “ ⁇ (good)”.
- the two glass plates bonded to each other were displaced by about 1 mm, and the evaluation of heat resistance was “x (defect)”.
- the laminated glass test piece [H7] -2 had a light transmittance of 75% at a wavelength of 550 nm and a light transmittance of 4% at a wavelength of 2500 nm.
- the whitening expanded 10 mm or more inside from the end of the laminated glass test piece [H7] -1, and the evaluation of moisture resistance was “x (defect)”.
- whitening has expanded to the inner side of 10 mm or more from the end of the laminated glass test piece [H7] -1, and the evaluation of heat resistance was “x (defect)”. It was.
- intermediate film [F7] (intermediate film [F7] mainly composed of ethylene / vinyl acetate copolymer) Ethylene / vinyl acetate copolymer (hereinafter abbreviated as “EVA”) (product name “Evaflex (registered trademark) EV150”, vinyl acetate content 33 wt%, manufactured by Mitsui DuPont Polychemical Co., Ltd.) 95 7 parts by weight of triallyl isocyanurate, 0.5 part by weight of 3-methacryloxypropyltrimethoxysilane (trade name “KBM-503”, manufactured by Shin-Etsu Chemical Co., Ltd.), dicumyl peroxide (trade name “Park Mill”) D ”(manufactured by NOF Corporation) and 1.0 part by weight of 2- (2H-benzotriazol-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol were added. , Mixed.
- EVA Ethylene / vinyl acetate cop
- the same T-die type film molding machine and film take-up machine as used in Reference Example 1 were used, and the molding conditions were such that the molten resin temperature was 90 ° C, the T-die temperature was 90 ° C, and the embossing roll temperature was 50 ° C
- one side of the extruded sheet was pressed against an embossing roll with a touch roll, and an intermediate film [F7] (thickness 380 ⁇ m, width 500 mm) made of EVA having a thickness of 380 ⁇ m and a width of 500 mm was formed while giving an embossed shape.
- the obtained interlayer film [F7] was wound up and collected on a roll.
- the test piece and the test piece of the transparent film [G1] are composed of a first glass plate / first intermediate film [F7] / film [G1] / second intermediate film [F7] / second glass plate. Overlaid with.
- This laminate was preheated at a temperature of 150 ° C. for 10 minutes under reduced pressure using a vacuum laminator (PVL0505S, manufactured by Nisshinbo Mechatronics), and then pressure-bonded at a temperature of 150 ° C. and a pressure of 0.03 MPa for 30 minutes. It was.
- This laminated glass was further placed in an autoclave and treated at a temperature of 140 ° C. and a pressure of 0.8 MPa for 30 minutes to produce a laminated glass test piece [H8].
- an area without the film [G1] is formed in the width of 3 mm around the laminated glass, and the end of the film [G1] is the first and second intermediate films [F7].
- the laminated glass test piece [H8] whitening expanded to an inner side of 10 mm or more from the end of the laminated glass test piece [H8], and the evaluation of moisture resistance was “x (defect)”. Moreover, whitening of the laminated glass test piece [H8] expanded 10 mm or more from the end of the laminated glass test piece [H8], and the evaluation of moisture resistance was “x (defect)”.
- the laminated glass obtained by laminating the intermediate film 2 / second glass plate in this order has a good function of reflecting light in the infrared region, and has excellent moisture resistance and heat resistance (Examples 1 to 5). ).
- Laminated glass in which the end of a transparent film laminated with a heat ray reflective film is embedded in an intermediate film [F] made of a specific modified block copolymer hydride [E] is a film laminated with a heat ray reflective film even in a moisture resistance test The end portion of the film exhibits better moisture resistance without being whitened (Examples 2 and 4).
- the modified block copolymer hydride [E] if the content of the polymer block [A] mainly composed of a repeating unit derived from an aromatic vinyl compound is too small, the moisture resistance is good, but the heat resistance The properties are insufficient (Comparative Example 1).
- the laminated glass having a heat ray reflecting function provided by the present invention has excellent moisture resistance and heat resistance, and is highly useful in practical use. According to the present invention, by using an intermediate film made of a specific modified block copolymer hydride [E], a transparent film laminated with a heat ray reflective film superior in mass productivity is sandwiched between glass plates. Laminated glass can be manufactured.
- E specific modified block copolymer hydride
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Abstract
Description
しかしながら、従来の熱線反射膜を積層した透明フィルムを挟み込んだ構造の合わせガラスは、自動車用安全ガラスに要求される、温度50℃、湿度95%RHの環境下での耐久性試験を行うと、変色や合わせガラス端部から熱線反射膜を積層した透明フィルムの白化等が生じ、耐久性に劣るものであった。
しかし、この文献に記載の合わせガラスは、フレームに固定する窓には適用可能であるが、自動車窓のようにガラス板自体が開閉する場合は、シール材の厚さが十分でなく、防湿効果が得難い場合があった。
しかし、これらの文献に記載の合わせガラスは、合わせガラスの貼り合わせに、ポリビニルブチラール膜、エチレン・酢酸ビニル共重合体膜、ポリウレタン膜等の、吸湿性や透湿度の高い中間膜を使用するものであるため、より厳しい高温高湿環境下やより長期間の使用において、ガラスの端部から水分が浸透し、周辺部分に白化が生じ易く、耐久性が必ずしも十分なものとは言えなかった。
しかしながら、この文献には、熱線反射膜を積層したフィルムの封入やその方法は記載されていない。
(1)第1のガラス板、第1の中間膜、熱線反射膜を積層した透明フィルム、第2の中間膜、及び第2のガラス板の順に積層してなる合わせガラスであって、
前記第1の中間膜及び第2の中間膜は、いずれも変性ブロック共重合体水素化物[E]から形成されたものであり、
前記変性ブロック共重合体水素化物[E]は、ブロック共重合体[C]の、全不飽和結合の90%以上を水素化したブロック共重合体水素化物[D]に、アルコキシシリル基が導入されたものであり、
前記ブロック共重合体[C]は、芳香族ビニル化合物由来の繰り返し単位を主成分とする少なくとも2つの重合体ブロック[A]と、鎖状共役ジエン化合物由来の繰り返し単位を主成分とする少なくとも1つの重合体ブロック[B]とからなり、
全重合体ブロック[A]のブロック共重合体全体に占める重量分率をwAとし、全重合体ブロック[B]のブロック共重合体全体に占める重量分率をwBとしたときに、
wAとwBとの比(wA:wB)が30:70~60:40である
ことを特徴とする合わせガラス。
前記第1の中間膜及び第2の中間膜は、いずれも変性ブロック共重合体水素化物[E]から形成されたものであり、
前記変性ブロック共重合体水素化物[E]は、ブロック共重合体[C]の、全不飽和結合の90%以上を水素化したブロック共重合体水素化物[D]に、アルコキシシリル基が導入されたものであり、
前記ブロック共重合体[C]は、芳香族ビニル化合物由来の繰り返し単位を主成分とする少なくとも2つの重合体ブロック[A]と、鎖状共役ジエン化合物由来の繰り返し単位を主成分とする少なくとも1つの重合体ブロック[B]とからなり、
全重合体ブロック[A]のブロック共重合体全体に占める重量分率をwAとし、全重合体ブロック[B]のブロック共重合体全体に占める重量分率をwBとしたときに、
wAとwBとの比(wA:wB)が30:70~60:40であり、
a.前記熱線反射膜を積層した透明フィルムが、第1及び第2のガラス板の面積より小さい面積を有し、
b.前記熱線反射膜を積層した透明フィルムが、第1及び第2の中間膜の面積より小さい面積を有し、
c.前記熱線反射膜を積層した透明フィルムの端が、第1及び第2のガラス板の端に対して全周囲に亘って2mm以上離れて配置され、
d.前記熱線反射膜を積層した透明フィルムの端が、第1及び第2の中間膜の端に対して全周囲に亘って2mm以上離れて配置されており、
e.前記熱線反射膜を積層した透明フィルムが、第1及び第2の中間膜に包埋された状態である合わせガラス。
本発明に用いる変性ブロック共重合体水素化物[E]は、前駆体であるブロック共重合体水素化物[D]に、アルコキシリル基が導入されたものである。
ブロック共重合体水素化物[D]は、その前駆体であるブロック共重合体[C]の全不飽和結合の90%以上を水素化して得られたものである。
また、ブロック共重合体[C]は、ブロック共重合体水素化物[D]の前駆体であり、少なくとも2つの重合体ブロック[A]と少なくとも1つの重合体ブロック[B]を含有する高分子である。
重合体ブロック[A]は、芳香族ビニル化合物由来の構造単位を主成分とする重合体ブロックである。
重合体ブロック[A]中の、芳香族ビニル化合物由来の構造単位の含有量は、通常90重量%以上、好ましくは95重量%以上、より好ましくは99重量%以上である。
重合体ブロック[A]中の芳香族ビニル化合物由来の構造単位の含有量が少な過ぎると、第1及び/又は第2の中間膜の耐熱性が低下するおそれがある。
重合体ブロック[A]は、芳香族ビニル化合物由来の構造単位以外の成分を含有していてもよい。他の成分としては、鎖状共役ジエン由来の構造単位及び/又はその他のビニル化合物由来の構造単位が挙げられる。その含有量は、重合体ブロック[A]に対し、通常10重量%以下、好ましくは5重量%以下、より好ましくは1重量%以下である。
ブロック共重合体[C]に含まれる複数の重合体ブロック[A]同士は、上記の範囲を満足するものであれば、互いに同一であっても、相異なっていても良い。
重合体ブロック[B]は、鎖状共役ジエン化合物由来の構造単位を主成分とする重合体ブロックである。
重合体ブロック[B]中の、鎖状共役ジエン化合物由来の構造単位の含有量は、通常70重量%以上、好ましくは80重量%以上、より好ましくは90重量%以上である。重合体ブロック[B]中の、鎖状共役ジエン化合物由来の構造単位の含有量が上記範囲にあると、第1及び/又は第2の中間膜に柔軟性が付与されるので好ましい。
ブロック共重合体[C]が重合体ブロック[B]を複数有する場合、重合体ブロック[B]同士は、互いに同一であっても、相異なっていても良い。
ブロック共重合体[C]は、ブロック共重合体水素化物[D]の前駆体であり、少なくとも2つの重合体ブロック[A]と少なくとも1つの重合体ブロック[B]を含有する高分子である。
ブロック共重合体[C]中の重合体ブロック[A]の数は、通常5個以下、好ましくは4個以下、より好ましくは3個以下である。
Mw(A)maxが大きくなる場合、あるいは、Mw(B)minが小さくなって、Mw(B)minのブロック[B]を挟んで両隣の2つのブロック[A]があたかも1つのブロック[A]のように挙動する場合は、弾性率が高くなり、中間膜の柔軟性が低下するおそれがある。
また、ブロック共重合体[C]の分子量分布(Mw/Mn)は、好ましくは3以下、より好ましくは2以下、特に好ましくは1.5以下である。
後者の方法に用いるカップリング剤としては、メチルジクロロシラン、ジメチルジクロロシラン、メチルトリクロロシラン、ブチルトリクロロシラン、テトラクロロシラン、ジブロモエタン、テトラクロロ錫、ブチルトリクロロ錫、テトラクロロゲルマニウム、ビス(トリクロロシリル)エタン等のハロゲン化合物;エポキシ化大豆油等のエポキシ化合物;アジピン酸ジエチル、アジピン酸ジメチル、ジメチルテレフタル酸、ジエチルテレフタル酸等のジカルボン酸のジエステル化合物;ジビニルベンゼン等のポリビニル化合物;ポリイソシアネート;が挙げられる。
ブロック共重合体水素化物[D]は、上記のブロック共重合体[C]の全不飽和結合、すなわち、ブロック共重合体[C]の主鎖及び側鎖の炭素-炭素不飽和結合、並びに、芳香環の炭素-炭素不飽和結合を水素化したものである。その水素化率は通常90%以上、好ましくは97%以上、より好ましくは99%以上である。水素化率が高いほど、成形体の耐候性、耐熱性及び透明性が良好である。
ブロック共重合体水素化物[D]の水素化率は、ブロック共重合体水素化物[D]の1H-NMRを測定することにより求めることができる。
本発明で使用する変成ブロック共重合体水素化物[E]は、上記ブロック共重合体水素化物[D]に、アルコキシシリル基が導入されたものである。
これらのエチレン性不飽和シラン化合物は、それぞれ単独で用いてもよいし、2種以上を組み合わせて使用してもよい。
これらの過酸化物は、それぞれ単独で用いてもよいし、2種以上を組み合わせて使用してもよい。
過酸化物の使用量は、ブロック共重合体水素化物[D]100重量部に対して、通常0.05~2重量部、好ましくは0.1~1重量部、より好ましくは0.2~0.5重量部である。
本発明においては、変性ブロック共重合体水素化物[E]は、樹脂に一般的に配合される各種の配合剤を配合した樹脂組成物として用いることができる。好ましい配合剤としては、柔軟性、接着温度の低下及び金属との接着性等を調整するための軟化剤及び粘着付与剤;耐熱安定性、耐光安定性、加工性等を高めるための、酸化防止剤、紫外線吸収剤、光安定剤、及びブロッキング防止剤;等が挙げられる。
リン系酸化防止剤としては、トリフェニルホスファイト、ジフェニルイソデシルホスファイト、フェニルジイソデシルホスファイト、トリス(ノニルフェニル)ホスファイト、トリス(ジノニルフェニル)ホスファイト、トリス(2,4-ジ-t-ブチルフェニル)ホスファイト、10-(3,5-ジ-t-ブチル-4-ヒドロキシベンジル)-9,10-ジヒドロ-9-オキサ-10-ホスファフェナントレン-10-オキサイド等のモノホスファイト系化合物;4,4’-ブチリデン-ビス(3-メチル-6-t-ブチルフェニル-ジ-トリデシルホスファイト)、4,4’-イソプロピリデン-ビス(フェニル-ジ-アルキルホスファイト)(アルキル部分の炭素数12~15)等のジホスファイト系化合物が挙げられる。
第1及び第2の中間膜は、前記の変性ブロック共重合体水素化物[E]をシート状に成形したものであり、第1のガラス板と第2のガラス板を貼り合わせるために用いられる。第1の中間膜と第2の中間膜は、前記の変性ブロック共重合体水素化物[E]から形成されたものであれば、互いに同一であっても、相異なるものであってもよい。
変性ブロック共重合体水素化物[E]からなる層の厚みが0.005mmよりも小さいと、ガラス板との接着性が十分に得られ難くなる。
本発明に用いる熱線反射膜を積層した透明フィルムは、波長550nmの光線透過率が50%以上、好ましくは60%以上、より好ましくは70%以上のフィルムである。
樹脂フィルムの厚みは、特に限定されず、通常10~300μm、好ましくは20~200μm、より好ましくは40~100μmである。
本発明の合わせガラスは、少なくとも、第1のガラス板、第1の中間膜、熱線反射膜を積層した透明フィルム、第2の中間膜、及び第2のガラス板の順に積層してなる合わせガラスであって、前記第1及び第2の中間膜が、前記変性ブロック共重合体水素化物[E]から形成されたものである。すなわち、本発明の合わせガラスは、変性ブロック共重合体水素化物[E]を、第1のガラスと熱線反射膜を積層した透明フィルム、熱線反射膜を積層した透明フィルムと第2のガラスとを強固に接着させて一体化してなるものである。
a.熱線反射膜を積層した透明フィルムとして、第1及び第2のガラス板の面積より小さい面積を有するものを用いる。本発明の合わせガラスは、通常、長方形又は正方形の形状を有する。この場合、熱線反射膜を積層した透明フィルムは、第1及び第2のガラス板の一方向及びこれ直交する方向(縦方向及び横方向)のいずれの方向においても、第1及び第2のガラス板よりも小さいものであることが好ましい。例えば、第1及び第2のガラス板として、300mm×300mmのものを使用する場合、熱線反射膜を積層した透明フィルムとして、294mm×294mmの大きさのものを使用する。第1及び第2のガラス板の面積に対する、熱線反射膜を積層した透明フィルムの面積の割合は、好ましくは90%~100%、より好ましくは95~100%、さらに好ましくは95~99%である。
例えば、大きさが300mm×300mmの、第1及び第2のガラス板を用いる場合、大きさが294mm×294mmの、熱線反射膜を積層した透明フィルムを、前記第1及び第2のガラス板の端からともに3mmの距離を離して、第1及び第2のガラス板の中央に配置する。
例えば、大きさが300mm×300mmの、第1及び第2の中間膜を用いる場合、大きさが294mm×294mmの、熱線反射膜を積層した透明フィルムを、前記第1及び第2の中間膜の端からともに3mmの距離を離して、第1及び第2の中間膜の中央に配置する。
ディスプレイ素子や調光素子は、液晶素子、サーモクロミック素子、フォトクロミック素子、エレクトロクロミック素子等からなり、熱線反射膜と同様に、合わせガラス端部から侵入する水分や酸素により劣化し易いものが多い。したがって、本発明の合わせガラスと同様の構成、すなわち、ディスプレイ素子や調光素子の端が、第1及び第2の中間膜の端に対して全周囲に亘って2mm以上離れて配置された、第1のガラス板/第1の中間膜/ディスプレイ素子/第2の中間膜/第2のガラス板、第1のガラス板/第1の中間膜/調光素子/第2の中間膜/第2のガラス板、等の構成は、高温高湿環境下でのディスプレイ素子や調光素子の劣化を防止するためにも効果的である。
(1)重量平均分子量(Mw)及び分子量分布(Mw/Mn)
ブロック共重合体及びブロック共重合体水素化物の分子量は、THFを溶離液とするGPCによる標準ポリスチレン換算値として、38℃において測定した。
測定装置として、東ソー社製、HLC8020GPCを用いた。
(2)水素化率
ブロック共重合体水素化物[D]の主鎖、側鎖及び芳香環の水素化率は、1H-NMRスペクトルを測定して算出した。
(3)光線透過率
光線透過率の測定は、紫外可視分光光度計(V-670、日本分光社製)を使用して、波長550nn及び2500nmで光線透過率を測定した。
平面な合わせガラス試験片(縦300mm、横300mm)を、温度50℃、相対湿度95%RHの恒温恒湿槽内で、336時間ほぼ水平に配置して保存した後、外観変化の目視評価を行った。
目視観察の結果、試験片に、ひび割れ、膨れ、剥離、変色、泡、濁り等の変化が認められない場合を「◎(良好)」、試験片に、ひび割れ、膨れ、剥離が無く、変色、泡、濁りが有っても、試験片端部から10mm以内に限られる場合を「○(許容)」、試験片に、ひび割れ、膨れ、剥離が有り、試験片端部から10mm以上内側に、変色、泡、濁り等のいずれかの変化がある場合を「×(不良)」と評価した。
(5)耐熱性
平面な合わせガラス試験片(縦300mm、横300mm)を、沸騰水中で、鉛直の状態に浸漬し、2時間保持した後、外観変化の目視評価を行った。
試験片に、ひび割れ、泡、その他欠点が認められない場合を「◎(良好)」、試験片にひび割れが無く、泡、その他欠点が有っても試験片端部から10mm以内に限られる場合を「○(許容)」、試験片にひび割れが有り、試験片端部から10mm以上内側に泡、その他欠点のいずれかの変化がある場合を「×(不良)」と評価した。
中間膜[F1]の作製
(ブロック共重合体[C1]の製造)
内部が十分に窒素置換された、攪拌装置を備えた反応器に、脱水シクロヘキサン550部、脱水スチレン25.0部、及びジ-n-ブチルエーテル0.475部を入れた。次いで、全容を60℃で攪拌しながら、n-ブチルリチウムの15%シクロヘキサン溶液を0.88部加えて重合を開始させ、さらに、60℃で60分間全容を攪拌した。この時点で、反応液をガスクロマトグラフィーにより測定した結果、重合転化率は99.5%であった。
その後、反応液に脱水イソプレン50.0部を加え、そのまま60℃で30分間攪拌を続けた。この時点で重合転化率は99.5%であった。
その後更に、反応液に脱水スチレンを25.0部加え、60℃で60分間攪拌した。この時点での重合転化率はほぼ100%であった。
ここで、反応液にイソプロピルアルコール0.5部を加えて反応を停止させて、重合体溶液を得た。得られたブロック共重合体[C1]の重量平均分子量(Mw)は47,200、分子量分布(Mw/Mn)は1.04、wA:wB=50:50であった。
上記重合体溶液を、攪拌装置を備えた耐圧反応器に移送し、水素化触媒として珪藻土担持型ニッケル触媒(製品名「E22U」、ニッケル担持量60%、日揮触媒化成社製)8.0部、及び脱水シクロヘキサン100部を添加して混合した。反応器内部を水素ガスで置換し、さらに溶液を攪拌しながら水素を供給し、温度190℃、圧力4.5MPaにて6時間水素化反応を行った。水素化反応後のブロック共重合体水素化物[D1]の重量平均分子量(Mw)は49,900、分子量分布(Mw/Mn)は1.06であった。
次いで、上記溶液を、金属ファイバー製フィルター(孔径0.4μm、ニチダイ社製)にてろ過して微小な固形分を除去した。次いで、円筒型濃縮乾燥器(製品名「コントロ」、日立製作所社製)を用いて、温度260℃、圧力0.001MPa以下で、溶液から、溶媒であるシクロヘキサン、キシレン及びその他の揮発成分を除去した。連続して溶融ポリマーを、濃縮乾燥器に連結した孔径5μmのステンレス製焼結フィルターを備えたポリマーフィルター(富士フィルター社製)により、温度260℃でろ過した後、ダイから溶融ポリマーをストランド状に押出し、冷却後、ペレタイザーによりブロック共重合体水素化物[D1]のペレット95部を得た。得られたペレット状のブロック共重合体水素化物[D1]の重量平均分子量(Mw)は49,500、分子量分布(Mw/Mn)は1.10、水素化率はほぼ100%であった。
上記で得たブロック共重合体水素化物[D1]のペレット100部に対して、ビニルトリメトキシシラン2.0部、及び2,5-ジメチル-2,5-ジ(t-ブチルパーオキシ)ヘキサン(製品名「パーヘキサ(登録商標)25B」、日油社製)0.2部を添加して混合物を得た。この混合物を、二軸押出し機を用いて、樹脂温度200℃、滞留時間60~70秒で混練し、ストランド状に押出し、空冷した後、ペレタイザーによりカッティングし、アルコキシシリル基を有する変性ブロック共重合体水素化物[E1]のペレット94部を得た。
このもののFT-IRスペクトルを測定した結果、1090cm-1にSi-OCH3基、825cm-1と739cm-1にSi-CH2基に由来する新たな吸収帯が観測された。これらの新たな吸収帯は、ビニルトリメトキシシランの、Si-OCH3基、Si-CH2基に由来する吸収帯である、1075cm-1、808cm-1及び766cm-1と異なる位置に観測された。さらに、1H-NMRスペクトル(重クロロホルム中)を測定した結果、3.6ppmに、メトキシ基のプロトンに基づくピークが観測された。ピーク面積比からブロック共重合体水素化物[D1]の100部に対して、ビニルトリメトキシシラン1.8部が結合したことが確認された。
変性ブロック共重合体水素化物[E1]のペレットを、40mmφのスクリューを備えた押出し機を有するTダイ式フィルム溶融押出し成形機(Tダイ幅600mm)、キャストロール(エンボスパターン付き)、及びシート引き取り装置を備えた押出しシート成形機を使用して、溶融樹脂温度200℃、Tダイ温度200℃、キャストロール温度60℃の成形条件にて押出し成形し、変性ブロック共重合体水素化物[E1]からなる中間膜[F1](厚さ380μm、幅500mm)を成形した。得られた中間膜[F1]はロールに巻き取り回収した。
中間膜[F2]の作製
(ブロック共重合体[C2]の製造)
スチレン20.0部、イソプレン60.0部、スチレン20.0部をそれぞれ3回に分けてこの順に加え、n-ブチルリチウム(15%シクロヘキサン溶液)を0.80部に変える以外は、参考例1と同様に重合反応を行い、重合反応を停止させて、重合体溶液を得た。得られたブロック共重合体[C2]の重量平均分子量(Mw)は51,200、分子量分布(Mw/Mn)は1.04、wA:wB=40:60であった。
次に、上記重合体溶液を用いて参考例1と同様にして水素化反応を行った。水素化反応後のブロック共重合体水素化物[D2]の重量平均分子量(Mw)は54,200、分子量分布(Mw/Mn)は1.06であった。
得られたブロック共重合体水素化物[D2]のペレットを使用し、参考例1と同様にしてアルコキシシリル基を有する変性ブロック共重合体水素化物[E2]のペレット96部を得た。
得られた変性ブロック共重合体水素化物[E2]は、参考例1と同様にして分析することにより、ブロック共重合体水素化物[D2]の100部に対して、ビニルトリメトキシシラン1.8部が結合したことが確認された。
変性ブロック共重合体水素化物[E2]のペレットを、参考例1と同様にしてシート成形し、変性ブロック共重合体水素化物[E2]からなる中間膜[F2](厚さ380μm、幅500mm)を作製した。
中間膜[F3]の作製
(ブロック共重合体[C3]の製造)
スチレン15.0部、イソプレン75.0部、スチレン10.0部をそれぞれ3回に分けてこの順に加え、n-ブチルリチウム(15%シクロヘキサン溶液)を0.61部に変える以外は参考例1と同様に重合反応を行い、重合反応を停止させて重合体溶液を得た。
得られたブロック共重合体[C3]の重量平均分子量(Mw)は65,700、分子量分布(Mw/Mn)は1.04、wA:wB=25:75であった。
次に、上記重合体溶液を用いて参考例1と同様にして水素化反応を行った。水素化反応後のブロック共重合体水素化物[D3]の重量平均分子量(Mw)は69,500、分子量分布(Mw/Mn)は1.05であった。
得られたブロック共重合体水素化物[D3]のペレットを使用し、参考例1と同様にしてアルコキシシリル基を有する変性ブロック共重合体水素化物[E3]のペレット74部を得た。
得られた変性ブロック共重合体水素化物[E3]は、参考例1と同様にして分析することにより、ブロック共重合体水素化物[D3]の100部に対して、ビニルトリメトキシシラン1.9部が結合したことが確認された。
変性ブロック共重合体水素化物[E3]のペレットを使用し、溶融樹脂温度150℃、Tダイ温度150℃、キャストロール温度30℃とし、キャストロールに離形用のポリエチレンテレフタレートフィルム(厚さ25μm)(以降、「PETフィルム」と略記する。)を供しながら、PETフィルムの上に変性ブロック共重合体水素化物[3]を押し出すこと以外は、参考例1と同様にして変性ブロック共重合体水素化物[E3]からなる中間膜[F3](厚さ380μm、幅500mm)を成形した。得られた中間膜[F3]はPETフィルムと共にロールに巻き取り回収した。
中間膜[F4]の作製
(ブロック共重合体[C4]の製造)
スチレン35.0部、イソプレン30.0部、スチレン35.0部を、それぞれ3回に分けてこの順に加え、n-ブチルリチウム(15%シクロヘキサン溶液)を0.61部に変える以外は参考例1と同様に重合反応を行い、重合反応を停止させて重合体溶液を得た。得られたブロック共重合体[C4]の重量平均分子量(Mw)は70,000、分子量分布(Mw/Mn)は1.04、wA:wB=70:30であった。
次に、上記重合体溶液を用いて参考例1と同様にして水素化反応を行った。水素化反応後のブロック共重合体水素化物[D4]の重量平均分子量(Mw)は74,100、分子量分布(Mw/Mn)は1.05であった。
得られたブロック共重合体水素化物[D4]のペレットを使用し、参考例1と同様にしてアルコキシシリル基を有する変性ブロック共重合体水素化物[E4]のペレット91部を得た。
得られた変性ブロック共重合体水素化物[E4]は、参考例1と同様にして分析することにより、ブロック共重合体水素化物[D4]の100部に対して、ビニルトリメトキシシラン1.4部が結合したことが確認された。
変性ブロック共重合体水素化物[E4]のペレットを使用し、溶融樹脂温度220℃、Tダイ温度220℃、キャストロール温度70℃とすること以外は、参考例1と同様にして変性ブロック共重合体水素化物[E4]からなる中間膜[F4](厚さ380μm、幅500mm)を成形した。
中間膜[F5]の作製
(変性ブロック共重合体水素化物[E1]を主成分とする組成物[E5]の製造)
参考例1で得られた変性ブロック共重合体水素化物[E1]のペレットを、液状物を添加できるサイドフィーダーを備えた二軸押出し機(製品名「TEM37BS」、東芝機械社製)を用いて、樹脂温度190℃で押出した。一方、サイドフィーダーからイソブテン重合体水素化物(製品名「パールリーム(登録商標)24」、日油社製)を、変性ブロック共重合体水素化物[E1]の100部に対して10部の割合となるように連続的に添加して、ストランド状に押出し、空冷した後、ペレタイザーによりカッティングして、変性ブロック共重合体水素化物[E1]にイソブテン重合体水素化物を配合してなる変性ブロック共重合体水素化物樹脂組成物[E5]のペレット105部を得た。
変性ブロック共重合体水素化物樹脂組成物[E5]のペレットを使用する以外は、参考例1と同様にして、変性ブロック共重合体水素化物樹脂組成物[E5]からなる中間膜[F5](厚さ760μm、幅500mm)を成形した。
熱線反射膜を積層した透明フィルム[G1]の作製
縦40cm、横40cmのポリエチレンテレフタレートフィルム(商品名:ルミラー、厚さ50μm、東レ社製)の片面に、DCマグネトロンスパッタリング法により、In2O3(30nm)/Ag(10nm))/In2O3(60nm)/Ag(10nm)/In2O3(30nm)からなる熱線反射膜を積層し、熱線反射用のフィルム[G1]を作製した。フィルム[G1]の、波長550nmの光線透過率は78%、波長2500nmの光線透過率は4%であった。
参考例1で作製した中間膜[F1]のシートから、縦300mm、横300mmの試験片、及び、参考例6で作製した熱線反射膜を積層した透明フィルム[G1]から、縦300mm、横300mmの試験片をそれぞれ切り出した。
次いで、厚さ3.0mm、縦300mm、横300mmの2枚の青板ガラスの間に、中間膜[F1]の試験片、及び透明フィルム[G1]の試験片を、第1のガラス板/第1の中間膜[F1]/フィルム[G1]/第2の中間膜[F1]/第2のガラス板の層構成となるように重ねた。この積層物を、ゴム製バッグに入れて、脱気、密封した後、オートクレーブに入れて温度140℃、圧力0.8MPaで30分間処理して、合わせガラス試験片[H1]-1を作製した。試験片[H1]-1では、フィルム[G1]の端部は中間膜[F1]で包埋されていない。
同様にして、光線透過率測定用に、縦70mm、横50mmの合わせガラス試験片[H1]-2も作製した。
合わせガラス試験片[H1]-1は、50℃、95%RHの環境下に保持した後、合わせガラス端部から5mm以内の部分に白化が見られるのみであり、耐湿性の評価は「○(許容)」であった。
また、合わせガラス試験片[H1]-1は、沸騰水中に保持した後、外観上の変化は認められず、耐熱性の評価は「◎(良好)」であった。
参考例6で作製した熱線反射膜を積層した透明フィルム[G1]から、縦294mm、横294mmの試験片を切り出し、中間膜[F1]のシートの端から、縦方向及び横方向共に3mmの距離を離して中間膜[F1]のシートの中央に配置すること以外は、実施例1と同様にして、第1のガラス板/第1の中間膜[F1]/フィルム[G1]/第2の中間膜[F1]/第2のガラス板の層構成からなる合わせガラス試験片[H2]を作製した。試験片[H2]では、合わせガラスの周囲の幅3mmには、フィルム[G1]の無い領域が形成され、フィルム[G1]の端部は第1及び第2の中間膜[F1]で包埋されている。
また、合わせガラス試験片[H2]では外観上の変化は認められず、耐熱性の評価は「◎(良好)」であった。
参考例2で作製した中間膜[F2]を使用する以外は、実施例1と同様にして、第1のガラス板/第1の中間膜[F2]/フィルム[G1]/第2の中間膜[F2]/第2のガラス板の層構成からなる合わせガラス試験片[H3]-1を作製した。試験片[H3]-1では、フィルム[G1]の端部は第1及び第2の中間膜[F2]で包埋されていない。同様にして、光線透過率測定用に、縦70mm、横50mmの合わせガラス試験片[H3]-2も作製した。
合わせガラス試験片[H3]-1は、合わせガラス端部から2mm以内の部分に白化が見られるのみであり、耐湿性の評価は「○(許容)」であった。
また、合わせガラス試験片[H3]-1は、外観上の変化は認められず、耐熱性の評価は「◎(良好)」であった。
参考例2で作製した中間膜[F2]を使用する以外は、実施例2と同様にして、第1のガラス板/第1の中間膜[F2]/フィルム[G1]/第2の中間膜[F2]/第2のガラス板の層構成からなる合わせガラス試験片[H4]を作製した。試験片[H4]では、合わせガラスの周囲の幅3mmには、フィルム[G1]の無い領域が形成され、フィルム[G1]の端部は第1及び第2の中間膜[F2]で包埋されている。
また、合わせガラス試験片[H4]は、外観上の変化は認められず、耐熱性の評価は「◎(良好)」であった。
参考例5で作製した中間膜[F5]を使用し、青板ガラス(第1及び第2のガラス)に代えて、厚さ3.0mm、縦300mm、横300mmの白板ガラスを使用する以外は、実施例1と同様にして、第1のガラス板/第1の中間膜[F5]/フィルム[G1]/第2の中間膜[F5]/第2のガラス板の層構成からなる合わせガラス試験片[H5]-1を作製した。試験片[H5]-1では、フィルム[G1]の端部は、第1及び第2の中間膜[F5]で包埋されていない。
同様にして、厚さ3.0mmの白板ガラスを使用して光線透過率測定用に、縦70mm、横50mmの合わせガラス試験片[H5]-2も作製した。
00nmの光線透過率は4%であった。
合わせガラス試験片[H5]-1は、合わせガラス端部から1mm以内の部分にのみ僅かに白化が見られるのみであり、耐湿性の評価は「○(許容)」であった。
また、合わせガラス試験片[H5]-1は、外観上の変化は認められず、耐熱性の評価は「◎(良好)」であった。
参考例3で作製した中間膜[F3]からPETフィルムを剥がして使用し、オートクレーブの温度を110℃とする以外は、実施例1と同様にして、第1のガラス板/第1の中間膜[F3]/フィルム[G1]/第2の中間膜[F3]/第2のガラス板の層構成からなる合わせガラス試験片[H6]-1を作製した。試験片[H6]-1では、フィルム[G1]の端部は、第1及び第2の中間膜[F3]で包埋されていない。
同様にして、厚さ3.0mmの白板ガラスを使用して、光線透過率測定用の合わせガラス試験片[H6]-2も作製した。
合わせガラス試験片[H6]-1は、合わせガラス全面に渡って白化及びその他の変化は認められず、耐湿性の評価は「◎(良好)」であった。
また、合わせガラス試験片[H6]-1は、貼り合わせた2枚のガラス板が約1mmずれを生じ、耐熱性の評価は「×(不良)」であった。
参考例4で作製した中間膜[F4]を使用し、オートクレーブの温度を150℃とする以外は、実施例2と同様にして、第1のガラス板/第1の中間膜[F4]/フィルム[G1]/第2の中間膜[F4]/第2のガラス板の層構成からなる合わせガラス試験片[H7]-1を作製した。試験片[H7]-1では、フィルム[G1]の端部は、第1及び第2の中間膜[F4]で包埋されている。
同様にして、厚さ3.0mmの白板ガラスを使用して、光線透過率測定用の合わせガラス試験片[H7]-2も作製した。
合わせガラス試験片[H7]-1は、合わせガラス試験片[H7]-1の端部から10mm以上内側に白化が拡大しており、耐湿性の評価は「×(不良)」であった。
また、合わせガラス試験片[H7]-1でも、合わせガラス試験片[H7]-1の端部から10mm以上内側に白化が拡大しており、耐熱性の評価は「×(不良)」であった。
(エチレン・酢酸ビニル共重合体を主成分としてなる中間膜[F7])
エチレン・酢酸ビニル共重合体(以降、「EVA」と略記する。)(製品名「エバフレックス(登録商標)EV150」、酢酸ビニル含有量33重量%、三井・デュポンポリケミカル社製)のペレット95重量部に、トリアリルイソシアヌレート7重量部、3-メタクリロキシプロピルトリメトキシシラン(商品名「KBM-503」、信越化学工業社製)0.5重量部、ジクミルパーオキサイド(商品名「パークミルD」、日油社製)1.0重量部及び2-(2H-ベンゾトリアゾール-2-イル)-4-(1,1,3,3-テトラメチルブチル)フェノール0.4部を添加し、混合した。
参考例[7]で作製したEVAを主成分としてなる中間膜「F7]のシートから、縦300mm、横300mmの試験片、及び、参考例6で作製した熱線反射膜を積層した透明フィルム[G1]から縦294mm、横294mmの試験片を切り出した。厚さ3.0mm、縦300mm、横300mmの2枚の青板ガラス(第1及び第2のガラス)の間に、中間膜[F7]の試験片及び透明フィルム[G1]の試験片を、第1のガラス板/第1の中間膜[F7]/フィルム[G1]/第2の中間膜[F7]/第2のガラス板の層構成で重ねた。
この積層物を、真空ラミネータ(PVL0505S、日清紡メカトロニクス社製)を使用して、減圧下で、温度150℃で10分間予熱した後、温度150℃、圧力0.03MPaで30分間圧着し、合わせガラスとした。この合わせガラスを、さらにオートクレーブに入れて、温度140℃、圧力0.8MPaで30分間処理して、合わせガラス試験片[H8]を作製した。合わせガラス試験片[H8]では、合わせガラスの周囲の幅3mmにはフィルム[G1]の無い領域が形成され、フィルム[G1]の端部は、第1及び第2の中間膜[F7]で包埋されている。
また、合わせガラス試験片[H8]は、合わせガラス試験片[H8]の端部から10mm以上内側に白化が拡大しており、耐湿性の評価は「×(不良)」であった。
本発明の範囲の特定の変性ブロック共重合体水素化物[E]からなる中間膜[F]を使用した、第1のガラス板/第1の中間膜/熱線反射膜を積層した透明フィルム/第2の中間膜/第2のガラス板の順に積層してなる合わせガラスは、赤外線領域の光の良好な反射機能を有し、耐湿性、耐熱性に優れたものである(実施例1~5)。
熱線反射膜を積層した透明フィルムの端部が特定の変性ブロック共重合体水素化物[E]からなる中間膜[F]に包埋された合わせガラスは、耐湿試験でも熱線反射膜を積層したフィルムの端部が白化することなく、より優れた耐湿性を示す(実施例2、4)。
変性ブロック共重合体水素化物[E]の場合も、芳香族ビニル化合物由来の繰り返し単位を主成分とする重合体ブロック[A]の含有率が少な過ぎると、耐湿性は良好であるが、耐熱性が不十分である(比較例1)。
変性ブロック共重合体水素化物[E]の場合も、芳香族ビニル化合物由来の繰り返し単位を主成分とする重合体ブロック[A]の含有率が多過ぎると、耐熱性は高いが、熱線反射膜を積層した透明フィルムの端部を包埋した場合でも耐湿性、耐煮沸性は不十分である(比較例2)。
極性基を有するEVAからなる中間膜では、熱線反射膜を積層した透明フィルムの端部を包埋しても耐湿性、耐煮沸性は不十分である(比較例3)。
本発明によれば、特定の変性ブロック共重合体水素化物[E]からなる中間膜を使用することにより、量産性に優位な熱線反射膜を積層した透明フィルムをガラス板間に挟み込んだ構造の合わせガラスが製造可能である。
Claims (2)
- 第1のガラス板、第1の中間膜、熱線反射膜を積層した透明フィルム、第2の中間膜、及び第2のガラス板の順に積層してなる合わせガラスであって、
前記第1の中間膜及び第2の中間膜は、いずれも変性ブロック共重合体水素化物[E]から形成されたものであり、
前記変性ブロック共重合体水素化物[E]は、ブロック共重合体[C]の、全不飽和結合の90%以上を水素化したブロック共重合体水素化物[D]に、アルコキシシリル基が導入されたものであり、
前記ブロック共重合体[C]は、芳香族ビニル化合物由来の繰り返し単位を主成分とする少なくとも2つの重合体ブロック[A]と、鎖状共役ジエン化合物由来の繰り返し単位を主成分とする少なくとも1つの重合体ブロック[B]とからなり、
全重合体ブロック[A]のブロック共重合体全体に占める重量分率をwAとし、全重合体ブロック[B]のブロック共重合体全体に占める重量分率をwBとしたときに、
wAとwBとの比(wA:wB)が30:70~60:40である
ことを特徴とする合わせガラス。 - 第1のガラス板、第1の中間膜、熱線反射膜を積層した透明フィルム、第2の中間膜、及び第2のガラス板の順に積層してなる合わせガラスであって、
前記第1の中間膜及び第2の中間膜は、いずれも変性ブロック共重合体水素化物[E]から形成されたものであり、
前記変性ブロック共重合体水素化物[E]は、ブロック共重合体[C]の、全不飽和結合の90%以上を水素化したブロック共重合体水素化物[D]に、アルコキシシリル基が導入されたものであり、
前記ブロック共重合体[C]は、芳香族ビニル化合物由来の繰り返し単位を主成分とする少なくとも2つの重合体ブロック[A]と、鎖状共役ジエン化合物由来の繰り返し単位を主成分とする少なくとも1つの重合体ブロック[B]とからなり、
全重合体ブロック[A]のブロック共重合体全体に占める重量分率をwAとし、全重合体ブロック[B]のブロック共重合体全体に占める重量分率をwBとしたときに、
wAとwBとの比(wA:wB)が30:70~60:40であり、
a.前記熱線反射膜を積層した透明フィルムが、第1及び第2のガラス板の面積より小さい面積を有し、
b.前記熱線反射膜を積層した透明フィルムが、第1及び第2の中間膜の面積より小さい面積を有し、
c.前記熱線反射膜を積層した透明フィルムの端が、第1及び第2のガラス板の端に対して全周囲に亘って2mm以上離れて配置され、
d.前記熱線反射膜を積層した透明フィルムの端が、第1及び第2の中間膜の端に対して全周囲に亘って2mm以上離れて配置されており、
e.前記熱線反射膜を積層した透明フィルムが、第1及び第2の中間膜に包埋された状態である合わせガラス。
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| EP15819174.2A EP3168202B1 (en) | 2014-07-09 | 2015-07-07 | Laminated glass |
| PCT/JP2015/069543 WO2016006610A1 (ja) | 2014-07-09 | 2015-07-07 | 合わせガラス |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3225393A1 (en) * | 2016-04-01 | 2017-10-04 | Asahi Glass Company, Limited | Laminated glass for vehicle |
| JP2017186179A (ja) * | 2016-04-01 | 2017-10-12 | 旭硝子株式会社 | 合わせガラス |
| JP2017186229A (ja) * | 2016-04-01 | 2017-10-12 | 旭硝子株式会社 | 車両用合わせガラス |
| JP2020138905A (ja) * | 2018-04-11 | 2020-09-03 | 大日本印刷株式会社 | 合わせガラス、合わせガラスの製造方法、調光装置、調光セル及び調光装置用積層体 |
| JP7351244B2 (ja) | 2018-04-11 | 2023-09-27 | 大日本印刷株式会社 | 合わせガラス、合わせガラスの製造方法、調光装置、調光セル及び調光装置用積層体 |
| JPWO2020009064A1 (ja) * | 2018-07-05 | 2021-08-02 | 日本ゼオン株式会社 | 積層体および合わせガラス |
| JP7259856B2 (ja) | 2018-07-05 | 2023-04-18 | 日本ゼオン株式会社 | 積層体および合わせガラス |
| WO2020080202A1 (ja) | 2018-10-17 | 2020-04-23 | 日本ゼオン株式会社 | 共重合体水素化物およびその製造方法、共重合体水素化物含有組成物、合わせガラス用中間膜、合わせガラス用中間膜積層体、封止材、光学フィルム、医療用成形体およびその製造方法、接着剤、ならびに、接合体およびその製造方法 |
| US11773193B2 (en) | 2018-10-17 | 2023-10-03 | Zeon Corporation | Hydrogenated copolymer and method of producing the same, hydrogenated copolymer-containing composition, interlayer film for laminated glass, interlayer film laminate for laminated glass, sealing material, optical film, medical shaped article and method of producing the same, adhesive, and assembly and method of producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017171575A (ja) | 2017-09-28 |
| EP3168202A1 (en) | 2017-05-17 |
| US10328674B2 (en) | 2019-06-25 |
| EP3168202A4 (en) | 2018-03-28 |
| US20170151757A1 (en) | 2017-06-01 |
| US20190248114A1 (en) | 2019-08-15 |
| JP2020045279A (ja) | 2020-03-26 |
| EP3168202B1 (en) | 2024-06-05 |
| JP7249926B2 (ja) | 2023-03-31 |
| JPWO2016006610A1 (ja) | 2017-04-27 |
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