WO2019098335A1 - Film intermédiaire pour la stratification de verre et verre feuilleté utilisant celui-ci - Google Patents

Film intermédiaire pour la stratification de verre et verre feuilleté utilisant celui-ci Download PDF

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Publication number
WO2019098335A1
WO2019098335A1 PCT/JP2018/042524 JP2018042524W WO2019098335A1 WO 2019098335 A1 WO2019098335 A1 WO 2019098335A1 JP 2018042524 W JP2018042524 W JP 2018042524W WO 2019098335 A1 WO2019098335 A1 WO 2019098335A1
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Prior art keywords
glass
component
intermediate film
mass
bonded
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PCT/JP2018/042524
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English (en)
Japanese (ja)
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義勝 水上
秋庭　英治
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有限会社サンサーラコーポレーション
クラレトレーディング株式会社
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Priority to JP2019554318A priority Critical patent/JPWO2019098335A1/ja
Publication of WO2019098335A1 publication Critical patent/WO2019098335A1/fr

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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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/10—Homopolymers or copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
    • C09J129/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09J133/10—Homopolymers or copolymers of methacrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition

Definitions

  • the present invention relates to a glass laminating intermediate film and a laminated glass using the same.
  • a polyvinyl butyral film is often used as an intermediate film for laminating a glass, which bonds an inorganic glass and an inorganic glass.
  • the polyvinyl butyral film has good adhesion to inorganic glass and is excellent in transparency.
  • Polyvinyl butyral (hereinafter abbreviated as "PVB") contains an aldehyde group having a large polarity and a hydroxyl group, and contributes to the adhesion to the inorganic glass.
  • PVB products intermediate films for glass bonding in which the ratio of the aldehyde group and the hydroxyl group differs are marketed.
  • PVB products intermediate films for glass bonding
  • ionomers are copolymers of ethylene, propylene and the like, and unsaturated carboxylic acids such as acrylic acid, methacrylic acid and maleic acid, and metals It is an aggregate composed of ions, and the carboxylic acid group coordinated with the metal ion contributes to the adhesion to the inorganic glass.
  • Various brands are commercially available depending on the ratio of each monomer and the type of metal ion.
  • EVA polyethylene vinyl acetate
  • the problem to be solved by the present invention relates to an inorganic glass and an organic glass, and is to provide an intermediate film for laminating glass and a laminated glass using the same. Moreover, it is possible to adhere
  • the present inventors express good adhesion by blending more than 20% by mass of polymer poor in adhesion to inorganic glass and further mixing three or more kinds of polymers having different components.
  • the formulation was found, and the intermediate film for glass bonding of the present invention and a laminated glass using the intermediate film were completed.
  • the intermediate film for laminating glass comprises component (A) which is at least one polymer selected from ionomers, polyvinyl butyral, polyethylene vinyl acetate, modified polycarbonate, cellulose acetate, polyglycolic acid and polyurethane;
  • the mer is contained as a polymer different from each other, and the content of the component (A) is 8% by mass to 80% by mass, and the organic glasses are bonded to each other
  • the ionomer is an aggregate composed of a copolymer comprising ethylene, propylene and the like, an unsaturated carboxylic acid such as acrylic acid, methacrylic acid and maleic acid, and metal ions.
  • modified PC is, for example, a polycarbonate resin obtained by copolymerizing isosorbide, and is sold by Mitsubishi Chemical Co., Ltd. as a resin named DURABIO.
  • Modified polymethyl methacrylate (hereinafter abbreviated as "modified PMMA”) is a soft acrylic resin mainly composed of acrylic rubber, and is sold by Kuraray Co., Ltd. as a resin named Parapet SA.
  • the bonding glass of this invention contains the above-mentioned intermediate film for glass bonding, and is equipped with the structure which bonded inorganic glass and inorganic glass together.
  • Another bonded glass of the present invention includes the above-described intermediate film for glass bonding, and has a configuration in which an inorganic glass and an organic glass are bonded.
  • the bonding organic glass of the present invention includes the above-described intermediate film for bonding glass, and has a configuration in which the organic glass and the organic glass are bonded to each other.
  • This invention can supply the intermediate film for glass bonding, and its bonding glass by mix
  • the intermediate film for laminating glass includes a component (A) which is at least one polymer of IO, PVB, EVA, modified polycarbonate, cellulose acetate, polyglycolic acid and polyurethane, and polymethyl methacrylate (described below) , PMMA), modified PMMA, polypropylene (hereinafter abbreviated as PP), ethylene-propylene random copolymer, and component (B) which is at least one polymer selected from ethylene-propylene-butadiene copolymer , A mixture of components (A) and (B).
  • component (A) is 8 mass% or more and 80 mass% or less, and it is an intermediate film for glass bonding which the sum total of the kind of polymer of (A) and (B) consists of at least 3 types.
  • the polymers mentioned here as component (A) are polymers adhesive to glass.
  • two IOs having different composition such that metal ions are different or melt flow rates are different by 1.0 g / 10 min or more are different types of polymers.
  • the melt mass flow rate is measured at 190 ° C. under a 2.16 kg load in accordance with JIS K 7210: 1999.
  • two PVBs different in acetal group content by 5% by mass or more, in a hydroxyl group content by 3% by mass or in composition, or different in viscosity by 5 mPa ⁇ s or more are different types of polymers.
  • the viscosity is measured in a 10% solution at 20 ° C. and a solvent of 95% ethanol (containing 5% water) in accordance with DIN 53015 using a Hopper viscometer.
  • the intermediate film for glass bonding about 50% of the tensile strength of the film is the maximum value that can contribute to the adhesive strength of glass.
  • the adhesive strength between the intermediate film and the adherend such as inorganic glass do not exceed the tensile strength of the intermediate film.
  • the shear strength is higher than the tensile strength, the intermediate film itself is broken.
  • the adhesive strength increases in correlation with the blending ratio of the component (A).
  • the intermediate film of the present embodiment is preferably an intermediate film having a tensile strength of 15 MPa or more.
  • the intermediate film for bonding the organic glass with the polymer sheet may have a relatively small adhesive strength, and may have a compressive shear strength of about 3 MPa.
  • the compressive shear strength of the intermediate film for glass bonding needs to be 8 MPa or more in order to prevent the falling off of the inorganic glass fragments crushed by impact.
  • the tensile elongation of an intermediate film is preferable.
  • the tensile elongation is 60% or more, more preferably 100% or more.
  • the compressive shear strength of the intermediate film for glass bonding is preferably 15 MPa or more. Since the intermediate film made of EVA has a large tensile elongation and a small tensile strength, peroxides and the like are blended at a low temperature to form a film, and heating and crosslinking are carried out at the time of bonding to try to increase the tensile strength. However, in this embodiment, since a polymer having a large Young's modulus and tensile strength such as PMMA is used as the component (B), it is not necessary to crosslink IO and EVA.
  • Each of the random copolymer and the ethylene-propylene-butadiene copolymer preferably has a 20 ° C. refractive index in the range of 1.48 or more and 1.52 or less, thereby providing a transparent intermediate film.
  • the refractive index of each of the plurality of polymers contained in the intermediate film is within this range, the transparency of the intermediate film is hardly affected, but the smaller the difference in refractive index between the polymers, the smaller the decrease in visible light transmittance. preferable. Even if a single polymer is transparent, mixing polymers having a refractive index that is much larger than this causes white turbidity and the transparency of the laminated glass decreases. In automotive windshield applications, the required visible light transmission of laminated glass is 70% or more.
  • a component (A) is 20 mass% or more and 60 mass% or less.
  • the adhesiveness of the intermediate film is small, and a release paper is not necessary at the time of producing a laminated glass, and the handleability is excellent.
  • At least one of IO, PVB and EVA having large polarity is preferably contained in the intermediate film in an amount of 10% by mass or more in order to obtain a compressive shear strength of 3 MPa or more, a compressive shear strength of 8 MPa
  • the intermediate film contains 20% by mass or more of at least one of IO, PVB and EVA which are the component (A).
  • the upper limit is not particularly limited, but is preferably 90% by mass or less.
  • IO is a type of PC 2000, 1706, 1702 different in metal ion type and viscosity under the trade name HIMIRAN under the trade name of Mitsui-Dupont Polychemical Co., Ltd., and its refractive index is 1.50.
  • PVB polymers having different aldehyde groups and hydroxyl group contents
  • two types of PVB having different hydroxyl group contents separate in phase, three types of raw materials used in this embodiment are used. It is good also as two kinds of.
  • PVB is commercially available, for example, from Kuraray Co., Ltd. under the trade name Mowital and has a refractive index of 1.50 to 1.495.
  • the hydroxyl group content varies depending on the grade, and there are grades such as 11 to 14% by mass, 14 to 18% by mass, 18 to 21% by mass, 21 to 24% by mass, and 24 to 27% by mass.
  • those having a hydroxyl group content of 18 to 21% by mass and an acetyl group content of 1 to 4% by mass are type A, a hydroxyl group content of 24 to 27% by mass, and an acetyl group content of 1 to 4% by mass Is called type B.
  • EVA is commercially available from Tosoh Corporation under the trade name of Ultrasen, and the refractive index is 1.50 although it varies depending on the saponification rate.
  • modified PC for example, obtained by copolymerizing ISB (isosorbide) is commercially available from Mitsubishi Chemical Co., Ltd. under the trade name DURABIO, and has a refractive index of 1.50.
  • modified PC can be used as an adhesive component with PC, it is not an adhesive component with inorganic glass.
  • Inorganic glass adhesive polymers IO, PVB and EVA can also be used for adhesion to phthalic acid polyester having terminal hydroxyl group and carboxylic acid group (for example, PET) and PC.
  • Cellulose acetate is commercially available, for example, from Daicel Fine Chem Co., Ltd. under the trade name Acety, polyglycolic acid is for example from Kureha Co., Ltd. under the trade name Kuredux, and polyurethane is for example from BASF under the trade name Erastran. .
  • ⁇ Regarding Component (B)> As an adhesive component with PMMA, PMMA or modified PMMA can be used. When PMMA and modified PMMA are shared, the processing temperature of the mixture can be lowered by the modified PMMA having a low processing temperature. This facilitates adhesion processing with PMMA.
  • PMMA and modified PMMA are commercially available from Kuraray Co., Ltd. under the trade name of Parapet, and the refractive index of PMMA is 1.50, but the modified PMMA does not reduce the visible light transmittance even when it is mixed with PMMA.
  • the polypropylene and / or ethylene-propylene random copolymer is preferably produced by means of a metallocene catalyst.
  • the transparency is large when the catalyst is a metallocene catalyst.
  • Metallocene-catalyzed polypropylene, which is transparent, is commercially available, for example, from Nippon Polypropylene Corporation under the trade name Wintec.
  • Transparent ethylene-propylene random copolymers are commercially available, for example, from JSR Corporation, grades such as EP24, and from Ineos, with a type name of 200-CA40.
  • metallocene-catalyzed polypropylene and ethylene-propylene random copolymers are preferred over polypropylene- and ethylene-propylene random copolymers prepared with catalysts other than metallocene catalysts.
  • Component (B) is preferably hydrophobic with a water absorption of 0.5% or less.
  • a water absorption is based on ASTMD570, and is measured at 23 degreeC and 24 hours of immersion.
  • the reason why three or more types of polymer raw materials to be used are mixed and used is to provide the film with an appropriate tensile strength and elongation.
  • a sea-island structure is formed, and when the heterogeneous polymer to be an island portion is blended at 5% by mass or more, phase separation becomes fast, and it is difficult to produce a stable film.
  • the sea-island structure it is only the sea component that contributes to the strength of the film, and the tensile strength of the film decreases as the island component increases, and at the same time the tensile elongation also decreases.
  • the intermediate film of the present invention expresses a three-dimensional higher-order structure in which component (A) is continuous between two adherends. This higher order structure is considered to be similarly expressed also for the component (B). Since the intermediate film test piece of the present invention is immersed in water for 24 hours and then subjected to a tensile test, no increase in tensile elongation is observed. Therefore, the effect of water, which is a plasticizer of component (A) It is considered that the three-dimensional higher order structure of) is suppressed.
  • the film by mixing and using three or more types of polymer raw materials, it was possible to give the film a suitable tensile strength and elongation.
  • PMMA has a tensile elongation of 7% or less, but in the present embodiment, the tensile elongation of a film blended with 75% by mass of PMMA exceeds 100%. This fact also indicates that a special structure that is not a sea-island structure is expressed in the film of this embodiment. Further, since the tensile test fractured part of the intermediate film of the present invention was whitened at the stretched portion, it is considered that the higher order structure was changed by the stretching and the void was generated. This suggests that higher order structure is expressed.
  • the intermediate film of the present invention was supposed to be transparent because the refractive index difference of the components constituting the intermediate film is small, but it was translucent. Since this becomes transparent when laminated glass, the surface of the film has irregularities and is due to light scattering. Therefore, this unevenness indicates that the film surface has multiple components including the component (A) which is a minor component. The fine unevenness of the film surface is a factor that can eliminate the release paper pinching at the time of film winding.
  • One of the bonding glass of this embodiment is a bonding inorganic glass (inorganic glass / intermediate film / inorganic glass) using an inorganic glass and an inorganic glass by using the above-described intermediate film for bonding glass.
  • the thickness of the film varies depending on the required film strength, and is generally 380 ⁇ m and 750 ⁇ m in general, but those requiring further strength such as floor may be 3 mm or more as needed.
  • As the inorganic glass there are soda glass, potassium glass, quartz glass and the like, which may be selected appropriately. Colored inorganic glass may be used depending on the application.
  • Another bonded glass of this embodiment is a bonded glass (inorganic glass / intermediate film / PMMA sheet) using an inorganic glass and PMMA and the above-described intermediate film for bonded glass. Since inorganic glass and PMMA have large differences in polarity, it has hitherto been known to use a reactive polyurethane adhesive which can obtain the necessary adhesive strength. However, no examples of using an intermediate film have been reported yet. On the surface of the intermediate film of the present embodiment, a component (A) containing a polymer excellent in adhesiveness with inorganic glass having a large polarity and a component (B) containing PMMA, a polymer having a small polarity, coexist.
  • a bonded glass of inorganic glass and PMMA can be manufactured by a conventional method of manufacturing a bonded glass of glass and glass, for example, a pressure vacuum press method.
  • the manufacturing method of the intermediate film of this embodiment can also be manufactured as a co-extrusion film not only as a single film but also with PMMA and PC which are organic glasses of bonded glass.
  • the co-extrusion film can be molded into a three-dimensional bonded glass by pressurized heat press molding. In the case of mass production, it is effective to reduce the manufacturing cost.
  • another form of this embodiment is a bonded glass (inorganic glass / intermediate film / polyester sheet) using the intermediate film for the laminated glass of inorganic glass and phthalic acid polyester.
  • phthalic acid polyester include polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate and the like.
  • polyethylene terephthalate is preferable because of its low price, and amorphous APET and GPET are preferable.
  • GPET is preferable in view of transparency.
  • GPET is commercially available from SK Chemicals. Since the stretched PET sheet has a small crystal size, it is excellent in transparency and is preferable.
  • another form of this embodiment is bonded glass (inorganic glass / intermediate film / polycarbonate sheet) using the intermediate film for laminated glass of inorganic glass and polycarbonate. Furthermore, it is bonded glass (inorganic glass / intermediate film / PC sheet / intermediate film / PMMA sheet) in which a film is laminated.
  • the adhesion between resin films such as PMMA, polyester, PC, etc. and intermediate films is different from that of inorganic glass and inorganic glass, and it is not necessary to prevent the falling off of the inorganic glass fragments from the intermediate film, so the compressive shear strength is About 3 MPa is sufficient.
  • another form of this embodiment is a bonded organic glass (PMMA / intermediate film / PC sheet) using the intermediate film for laminated glass of PMMA and polycarbonate which is an organic glass.
  • PMMA and PC, PMMA and PET do not have adhesiveness with PMMA for PVB for inorganic glass adhesion, EVA and IO film, and laminated glass can not be manufactured.
  • PMMA as one component of the intermediate film, since adhesion to the PMMA sheet is the same component, it is possible to strongly bond by Cohesion.
  • PVB, IO and modified PC to be bonded to PC and polyester sheet, according to this embodiment, it has become possible for the first time to manufacture these laminated glass using an intermediate film.
  • another form of this embodiment is bonded organic glass using the said intermediate film for bonded glass of PMMA which is organic glass, PC mutually, or PMMA and a polyester sheet.
  • the base material of the laminated glass having the multilayer structure is, for example, a thermoplastic resin sheet such as PMMA, PC, or GPET
  • a multilayer extruder because the manufacturing cost is low.
  • This multilayer sheet can be commercialized into a preferable shape of a three-dimensional curved surface by heat pressing after appropriately cut out.
  • a wire mesh or the like can be sandwiched together with the intermediate film in the middle portion of the laminated glass.
  • Such a structure is suitable for architectural applications such as security glass.
  • the intermediate film of the present embodiment is also used for architectural doors, windows and the like, windows of automobiles and aircraft, windshields and shields of helmets and the like. It is also possible to impart ballistic resistance by combining the base materials and devising the thickness appropriately.
  • the intermediate film and the substrate used in the present embodiment may be wholly or partially colored or printed, and may contain additives such as a light-resistant agent, an ultraviolet absorber, and a heat ray absorber.
  • the thickness of the inorganic glass used in the present embodiment is appropriately selected according to the required strength. For example, in the case of a building floor material with a large load, it is as large as 3 cm, and in the case of a front inorganic glass of a car, bonding of 2 mm to 3 mm thickness is often used. In the case of a bonded organic glass of PMMA and PC, an inorganic glass with a thickness of 0.2 mm to 0.5 mm may be used in combination as it is required to improve only the wear resistance.
  • the strength and elongation of the intermediate film was measured according to JIS K 7127.
  • the compressive shear strength of the bonded body was measured according to the method used in JP-A-2001-526165.
  • the visible light transmittance was measured with a model V570 spectrophotometer manufactured by JASCO Corporation.
  • Example 1 Intermediate Film 1 Parapet G1000 manufactured by Kuraray Co., Ltd. as PMMA of component (B), Parapet SA1000-FR201 made by Kuraray Co., Ltd. as modified PMMA of component (B), Type A and Type B of Mowital Molarized by Kuraray Co., Ltd. as PVB of component (A)
  • the four polymers are mixed into the twin screw extruder at a mixing ratio of 25% by mass, 50% by mass, 12.5% by mass and 12.5% by mass, respectively, and the temperature of the cylinder, head and T die is 200.degree. Then, the temperature of the cooling take-off roller was set at 70 ° C., and the film was taken out so as not to be stretched to prepare an intermediate film 1 having a thickness of 750 ⁇ m.
  • the film had a tensile strength of 29.3 MPa and a tensile elongation of 123%.
  • the stretched part is whitened, the higher order structure is changed by the stretching, and it is considered that the void is formed.
  • One piece of the above-mentioned intermediate film 1 is held between two pieces of inorganic glass of 30 cm square and 3 mm in thickness, and pressure heating is carried out at 140 ° C. by a vacuum dryer to prevent bubbles from entering. Was produced.
  • the transmittance of 400 to 800 nm was 80.2%. Since the visible light transmittance of the front inorganic glass for automobiles is required to be 70% or more, the transmittance was sufficient. Furthermore, the compressive shear strength was 12.7 MPa, which is an adhesive strength sufficient for automotive applications.
  • Example 1 is sandwiched between a 30 cm square, 6 mm thick PMMA sheet and a 30 cm square, 0.5 mm thick biaxially oriented PET sheet, heated at 140 ° C. with a vacuum dryer, and air bubbles.
  • the present invention bonded organic glass (PMMA sheet / intermediate film 1 / PET sheet) test piece was prepared in such a manner that the sample did not enter.
  • the transmittance of 400 to 800 nm was 85.1%.
  • the visible light transmittance of the automotive windshield was at least 70%, indicating a sufficient transmittance.
  • Example 2 Intermediate Film 2 Kuraray Parapet G1000 as PMMA of Component (B), Ultrasen 751 as Toso Co., Ltd. as EVA of Component (A), 4 types of Type A and Type B of Mowital made by Kuraray as PVB of Component (A)
  • the intermediate films 2 having a thickness of 750 ⁇ m were produced in the same manner as in Example 1 at a mixing ratio of 60% by mass, 20% by mass, 10% by mass, and 10% by mass of the polymers described above. It was not necessary to use release paper sandwiched between the films during winding of the film. The film had a tensile strength of 22.3 MPa and a tensile elongation of 241%.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was an excellent adhesive strength of 18.3 MPa.
  • Example 3 Intermediate Film 3 Kuraray Parapet G1000 as component (B) PMMA, and 3 types of polymer of type A and type B of Kuraray Mowital as component (A) PVB 75% by mass, 12.5% by mass, 12 each An intermediate film 3 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 0.5 mass%. It was not necessary to use release paper sandwiched between the films during winding of the film. The film had a tensile strength of 23.0 MPa and a tensile elongation of 205%.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece in which two inorganic glasses were bonded to one another was produced.
  • the visible light transmittance of this test piece was 81.3%, and the compressive shear strength was 10.9 MPa.
  • Example 4 Intermediate Film 4 60% by mass, 20% by mass, and 20% by mass of the polymer of Parapet G1000 manufactured by Kuraray Co., Ltd. as component (B) and the type A and type B polymers of Mowital made by Kuraray Co., Ltd. as PVB of component (A)
  • the intermediate film 4 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of It was not necessary to use release paper sandwiched between the films during winding of the film.
  • the film had a tensile strength of 22.5 MPa and a tensile elongation of 195%.
  • Example 2 Furthermore, in the same manner as in Example 1 except that the bonding temperature was changed to 170 ° C., a test piece in which two inorganic glasses were bonded was produced.
  • the compressive shear strength of this test piece was 25.8 MPa.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece bonded using two PET sheets was produced.
  • the compressive shear strength of this test piece was an excellent adhesive strength of 12.7 MPa.
  • This intermediate film has a total content of 40% by weight of PVB, and despite the fact that 60% by weight of PMMA does not contribute to the adhesion strength of the inorganic glass, the same degree of inorganic glass as that of the commercially available PVB film (Reference Example 2) The compressive shear strength is shown.
  • a bonded body test piece was produced using a 2 mm thick PET sheet instead of the inorganic glass.
  • the compressive shear strength of this test piece was 12.7 MPa.
  • Example 5 (Intermediate Film 5) 30% by mass, 35% by mass, and 35% by mass of the polymer of Parapet G1000 manufactured by Kuraray Co., Ltd. as the component (B) and the PVB of the component (A) Type A and Type B of Mowital
  • the intermediate film 5 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of The intermediate film was tacky and required release paper.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 32.4 MPa.
  • This intermediate film exhibited higher compressive shear strength to inorganic glass as compared to the commercially available PVB film (Reference Example 2).
  • Example 6 Intermediate Film 6 Kuraray Parapet G1000 as PMMA of component (B), Parapet SA1000-FR201 as Kuraray Co., Ltd. as modified PMMA of component (B), Type A and Type B of Mowital of Kuraray Co., Ltd. as PVB of component (A)
  • An intermediate film 6 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 30% by mass, 30% by mass, 20% by mass, and 20% by mass of the four polymers. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 38.4 MPa.
  • test piece bonded together using 2 sheets of PMMA sheets with a thickness of 2 mm instead of inorganic glass was produced.
  • the compressive shear strength of this test piece was 20.9 MPa.
  • test piece which bonded the dissimilar material called glass / PMMA similarly to the inorganic glass test piece was produced.
  • the visible light transmittance of this test piece was 80.9%, and the compressive shear strength was 20.1 MPa.
  • Example 7 Intermediate Film 7 Kuraray Parapet G1000 as PMMA of component (B), Parapet SA1000-FR201 as Kuraray Co., Ltd. as modified PMMA of component (B), type A of Mowital M4 by Kuraray Co., Ltd. as PVB of component (A) As a modified PC of 4 types of polymers of DURABIO D5380AR manufactured by Mitsubishi Chemical Corporation at a mixing ratio of 40% by mass, 20% by mass, 20% by mass and 20% by mass respectively in the same manner as in Example 1; Intermediate film 7 was produced. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece in which two inorganic glasses were bonded to one another was produced.
  • the compressive shear strength of this test piece was 10.5 MPa.
  • test piece bonded together using 2 sheets of PMMA sheets with a thickness of 2 mm instead of inorganic glass was produced.
  • the compressive shear strength of this test piece was 22.2 MPa.
  • test piece which bonded the dissimilar material called glass / PMMA similarly to the inorganic glass test piece was produced.
  • the compressive shear strength of this test piece was 9.9 MPa.
  • test piece bonded together using 2 PC sheets of thickness 2 mm instead of inorganic glass was produced.
  • the compressive shear strength of this test piece was 12.3 MPa.
  • test piece which bonded together different materials called glass / PC similarly to the inorganic glass test piece was produced.
  • the compressive shear strength of this test piece was 10.1 MPa.
  • Example 8 Intermediate Film 8 Kuraray Parapet G1000 as PMMA of component (B), Parapet SA1000-FR201 as Kuraray Co., Ltd. as modified PMMA of component (B), DURABIO D5380AR of Mitsubishi Chemical Co., Ltd. as modified PC of component (A)
  • An intermediate film 8 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 40% by mass, 40% by mass, and 20% by mass of the polymer, respectively. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece was prepared by using two PMMA sheets having a thickness of 2 mm. The compressive shear strength of this test piece was 24.1 MPa.
  • test piece was produced by using two PC sheets having a thickness of 2 mm.
  • the compressive shear strength of this test piece was 7.2 MPa.
  • test piece was made by bonding different materials called PMMA / PC.
  • the compressive shear strength of this test piece was 7.1 MPa.
  • Example 9 (Intermediate Film 9) 90% by mass and 5% by mass, respectively, of three types of polymers of HIMILAN 1706 manufactured by Dupont Polychemicals Co., Ltd. and HIMILAN 1702 as Component (A) and HIMILAN 1702 as Component (B) and Parapet G1000 manufactured by Kuraray Co., Ltd. as Component (B)
  • An intermediate film 9 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 except that the T-die temperature was changed to 230 ° C. at a mixing ratio of 5% by mass. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 1 Furthermore, the test piece which bonded two inorganic glass together like Example 1 was produced.
  • the visible light efficiency of this test piece was 85.9%, and the compressive shear strength was 7.8 MPa.
  • test piece in which a different material of inorganic glass of 2 mm in thickness and inorganic glass / PET made of a PET sheet of 0.5 mm in thickness was bonded was produced.
  • the visible light transmittance of this test piece was 85.1%, and the compressive shear strength was 7.5 MPa.
  • Example 10 Intermediate Film 10 Kuraray Parapet G1000 as PMMA of Component (B), Parapet SA 1000-FR201 as Kuraray Co., Ltd. as modified PMMA of Component (B), DURABIO D5380AR as Mitsubishi Chemical Co., Ltd. as modified PC of Component (A), Component (A) 60% by mass, 10% by mass, 10% by mass, and 10 types of polymers of type A of Kuraray Co., Ltd., Mowital type A, and component (A) of 10 types of polymers of HIMILAN 1702 manufactured by Dupont Polychemical Co., Ltd.
  • An intermediate film 10 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 except that the mixing ratio is 10% by mass. It was not necessary to use release paper sandwiched between the films during winding of the film. The film had a tensile strength of 28.9 MPa and a tensile elongation of 113%.
  • test piece which bonded two inorganic glass together like Example 1 was produced.
  • the compressive shear strength of this test piece was 11.8 MPa.
  • test piece bonded together using two PMMA sheets of thickness 2 mm was produced.
  • the compressive shear strength of this test piece was 28.5 MPa.
  • test piece was produced by using two sheets of PC having a thickness of 2 mm.
  • the compressive shear strength of this test piece was 16.5 MPa.
  • test piece was made by bonding different materials called glass / PMMA.
  • the compressive shear strength of this test piece was 11.5 MPa.
  • Example 11 Intermediate Film 11 Kuraray Parapet G1000 as PMMA of Component (B), Parapet SA 1000-FR201 as Kuraray Co., Ltd. as modified PMMA of Component (B), DURABIO D5380AR as Mitsubishi Chemical Co., Ltd. as modified PC of Component (A), Component (A) 4) 20 wt%, 20 wt%, 10 wt%, 20 types of polymer of Mowital type A manufactured by Kuraray Co., Ltd., and 10 types of HIMILAN 1702 manufactured by Dupont Polychemicals Ltd. as IO of component (A) An intermediate film 11 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 except that the T-die temperature was changed to 230 ° C.
  • the film had a tensile strength of 25.0 MPa and a tensile elongation of 142%.
  • test piece which bonded two inorganic glass together like Example 1 was produced.
  • the compressive shear strength of this test piece was 25.6 MPa.
  • test piece bonded together using two PMMA sheets of thickness 2 mm was produced.
  • the compressive shear strength of this test piece was 22.3 MPa.
  • test piece was produced by using two sheets of PC having a thickness of 2 mm.
  • the compressive shear strength of this test piece was 12.8 MPa.
  • test piece was made by bonding different materials called glass / PMMA.
  • the compressive shear strength of this test piece was 22.0 MPa.
  • test piece was made by bonding different materials called PMMA / PET.
  • the compressive shear strength of this test piece was 8.5 MPa.
  • Example 12 Intermediate Film 12 Component (B): Metallocene PP Wintec (WMX 02UX) manufactured by Japan Polypropylene Corp.
  • Component (A) PVB As Kuraray Co., Ltd. Mowital type A, type B polymer of 80% by mass and 10% by mass respectively
  • An intermediate film 12 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 10% by mass. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, the inorganic glass bonding test piece was produced similarly to Example 1. The compressive shear strength of this test piece was 7.1 MPa.
  • An intermediate film 13 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of mass% and 7.5 mass%. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • test piece which bonded two inorganic glass together like Example 1 was produced.
  • the compressive shear strength of this test piece was 5.7 MPa.
  • An intermediate film 14 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 25% by mass. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • test piece which bonded two inorganic glass together like Example 1 was produced.
  • the compressive shear strength of this test piece was 19.3 MPa.
  • Example 15 Intermediate Film 15 Kuraray Parapet G1000 as PMMA of component (B), Type A and Type B of Mowital made by Kuraray as PVB of component (A), EP 24 of JSR Corporation as ethylene-propylene random copolymer of component (B)
  • An intermediate film 15 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 80% by mass, 5% by mass, 5% by mass, and 10% by mass of the four polymers. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 3.7 MPa.
  • Example 16 Intermediate Film 16 Kuraray Parapet G1000 as PMMA of component (B), Type A and Type B of Mowital made by Kuraray as PVB of component (A), DURABIO D5380AR 4 of Mitsubishi Chemical Corporation as modified PC of component (A)
  • An intermediate film 16 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 80% by mass, 5% by mass, 5% by mass, and 10% by mass, respectively. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 9.2 MPa.
  • test piece was produced by using two sheets of PC having a thickness of 2 mm.
  • the compressive shear strength of this test piece was 9.5 MPa.
  • Example 17 Intermediate Film 17 Kuraray Parapet G1000 as PMMA of component (B), Type A and Type B of Mowital made by Kuraray as PVB of component (A), 4 types of Kuredux of Kureha as polyglycolic acid of component (A) Intermediate films 17 having a thickness of 750 ⁇ m were produced in the same manner as in Example 1 at a mixing ratio of 80% by mass, 5% by mass, 5% by mass, and 10% by mass, respectively. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece in which two inorganic glasses were bonded to one another was produced.
  • the compressive shear strength of this test piece was 8.3 MPa.
  • Example 18 Intermediate Film 18 Kuraray Parapet G1000 as PMMA of component (B), Type A and Type B of Mowital made by Kuraray as PVB of component (A), and Acety 4 of Daicel Fine Chem Co., Ltd. as cellulose acetate of component (A)
  • the intermediate film 18 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 80% by mass, 5% by mass, 5% by mass, and 10% by mass of the polymer It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece in which two inorganic glasses were bonded to one another was produced.
  • the compressive shear strength of this test piece was 8.4 MPa.
  • Example 19 Intermediate Film 19 Kuraray Parapet G1000 as PMMA of component (B), type A and type B of Mowital made by Kuraray as PVB of component (A), and Elastlan ET 590 by BASF as polyurethane of component (A)
  • An intermediate film 19 having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a blend ratio of 80% by mass, 5% by mass, 5% by mass, and 10% by mass of the polymer, respectively. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece in which two inorganic glasses were bonded to one another was produced. The compressive shear strength of this test piece was 9.9 MPa.
  • Example 20 (multilayer laminated glass) Intermediate film 1 of Example 1 between a 30 cm square, 0.5 mm thick inorganic glass piece and a 30 cm square, 3 mm thick PMMA sheet, 30 cm square, a 1 mm thick PC sheet
  • the film 7 was sandwiched, heated at 170 ° C. in a vacuum dryer, and air bubbles were prevented from entering to prepare a laminated glass of the present invention (inorganic glass / intermediate film 1 / PMMA sheet / intermediate film 7 / PC sheet) test piece .
  • the transmittance of 400 to 800 nm was 79.6%.
  • the visible light transmittance of the automotive windshield was at least 70%, indicating a sufficient transmittance.
  • the steel ball did not penetrate.
  • Comparative Example 1 Two types of polymer of Parapet G1000 manufactured by Kuraray Co., Ltd. as PMMA of component (B), and type B of Mowital made by Kuraray Co., Ltd. as PVB of component (A) at a mixing ratio of 80% by mass and 20% by mass respectively A 750 ⁇ m thick intermediate film was produced in the same manner as 1). The tensile strength of this film was 7.8 MPa, and the tensile elongation was as low as 5%. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 2.3 MPa and the variation was large. This is due to the fact that PVB, which is a glass bonding component, becomes an island due to the sea-island structure seen when two different types of resins are mixed, and therefore the proportion contributing to glass bonding is low.
  • Comparative Example 2 Component (B): Metallocene PP Wintec (WMX 02UX) manufactured by Japan Polypropylene Corp.
  • Component (A) PVB As Kuraray Co., Ltd. Mowital Type B Two polymers of 80% by mass and 20% by mass, respectively Then, in the same manner as in Example 1, an intermediate film having a thickness of 750 ⁇ m was produced. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, in the same manner as in Example 1, a test piece in which two inorganic glasses were bonded to one another was produced.
  • the compressive shear strength of this test piece was 2 MPa or less, and the variation was large. This is due to the fact that PVB, which is a glass bonding component, becomes an island due to the sea-island structure seen when two different types of resins are mixed, and therefore the proportion contributing to glass bonding is low.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 2 MPa or less, and the variation was large. This is due to the fact that PVB, which is a glass bonding component, becomes an island due to the sea-island structure seen when two different types of resins are mixed, and therefore the proportion contributing to glass bonding is low.
  • Comparative Example 4 Component (B): Metallocene PP Wintec (WMX 02UX) manufactured by Japan Polypropylene Corp.
  • Component (A) PVB As Kuraray Co., Ltd.
  • Mowital Type A, Type B Three types of polymers of 94% by mass and 3% by mass, respectively An intermediate film having a thickness of 750 ⁇ m was produced in the same manner as in Example 1 at a mixing ratio of 3% by mass. It was not necessary to use release paper sandwiched between the films during winding of the film.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the polymer content of the component (A) of this test piece was as low as 6%, the compressive shear strength was as low as 2.5 MPa, and the adhesion strength was practically poor.
  • Example 1 In the same manner as in Example 1, a 750 ⁇ m intermediate film consisting only of HIMILAN 1702 manufactured by Du Pont-Mitsui Polychemicals Co., Ltd. as the component (A) IO was produced. This intermediate film was tacky and required release paper. The strength of this intermediate film was 40.4 MPa, and the elongation was 379%.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 38.0 MPa.
  • Example 2 In the same manner as in Example 1, a 750 ⁇ m intermediate film consisting only of type A of Mowital manufactured by Kuraray Co., Ltd. as PVB of component (A) was produced. This intermediate film was tacky and required release paper. The strength of this intermediate film was 26.0 MPa, and the elongation was 231%.
  • Example 2 Furthermore, it carried out similarly to Example 1, and produced the test piece which bonded two inorganic glass together.
  • the compressive shear strength of this test piece was 23.4 MPa.
  • the intermediate film according to Example 1 has a mass ratio of PMMA: modified PMMA: PVB (type A): PVB (type B) of 2: 4: 1: 1, and the tensile strength of this film is 29.3 MPa, tensile The elongation was 123%.
  • PVB and PMMA are resins with small tensile elongation, and the penetration resistance is insufficient.
  • a plasticizer is generally used in PVB It is used by mixing and kneading about 20% by mass, reducing tensile strength and increasing tensile elongation.
  • the compressive shear strength of the intermediate film of Example 1 with the inorganic glass was 12.7 MPa. This compressive shear strength is a compressive shear strength (8 MPa or more) with an inorganic glass sufficient as an intermediate film used for a car windshield.
  • the intermediate film of Example 1 had a compression shear strength of about 49% of the conventional PVB film tensile strength shown in Reference Example 2 in spite of the total content of 25% by mass of the adhesive component (PVB) with the inorganic glass. It shows the strength.
  • the compressive shear strength of the PMMA sheets of Example 1 was 26.2 MPa.
  • the intermediate film of this example 1 has a combined amount of 25% by weight of PMMA and 50% of modified PMMA in total of 75% by weight, but the compressive shear strength with PMMA of 89% of the film tensile strength is It shows. In these, in addition to the adhesive force by the material affinity of PVB, since another adhesive force is working, it can be estimated that the adhesive force more than the adhesive force according to the PVB compounding quantity is exhibited.
  • Example 1 Since there is no polymer having a content of more than 50% and no polymer component constituting the sea, the sea-island structure can not be taken. Although the detailed structure is unknown, it is clear that, by blending, four components coexist and naturally express a stable higher-order structure.
  • Example 3 shows an example of producing an intermediate film according to this embodiment in which the mass ratio of PMMA: PVB (type A): PVB (type B) is 75: 12.5: 12.5.
  • the tensile strength of this film was 23 MPa, and the tensile elongation was 205%.
  • the compressive shear strength of the intermediate film of this example with the inorganic glass was 10.9 MPa. This compressive shear strength is an adhesive strength sufficient for automotive front inorganic glass to which two sheets of inorganic glass are bonded, and a large tensile elongation indicates good penetration resistance.
  • the intermediate film of Example 3 shows the compressive shear strength to glass of about 47% of the tensile strength of the conventional film of Reference Example 2 despite the fact that the PVB content is as low as 25% by mass.
  • the intermediate film of Example 3 has a large elongation of 205% despite the fact that the intermediate film of Example 3 is composed of only PVB and PMMA having a small degree of elongation, and the detailed structure is the same as Example 1 above. Is unknown.
  • the intermediate film of Example 3 is a blend of three kinds of polymers, it is shown that different from the sea-island structure is developed unlike the sea-island structure developed by the blend of two types of polymers. There is.
  • the compressive shear strength greater than the blending ratio which was expressed in the above Examples 1 and 3, is a component of the adhesion which has been considered conventionally, and explained only by the three factors of physical anchor effect, molecular cohesion and chemical bond strength. It is an impossible event.
  • the present inventors speculate that the intermediate film made of the polymer blend of the present embodiment has an interfacial tension (adhesive force) which does not appear in the conventional single component film as a component of adhesion.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un film intermédiaire pour la stratification de verre, comprenant un mélange de : un composant (A) qui est au moins un type de polymère choisi entre un ionomère, du polybutyral, du poly(éthylène-acétate de vinyle), du polycarbonate modifié, de l'acétate de cellulose, du poly(acide glycolique) et du polyuréthane ; un composant (B) qui est au moins un type de polymère choisi entre du poly(méthacrylate de méthyle), du poly(méthacrylate de méthyle) modifié, du polypropylène, un copolymère statistique d'éthylène-propylène et un copolymère éthylène-propylène-butadiène. Le film intermédiaire contient au moins trois types de polymères, de multiples polymères qui ont le même nom de polymère mais ont des compositions différentes les uns des autres sont inclus parmi les polymères du composant (A) et du composant (B) en tant que types différents de polymères et la teneur en composant (A) est de 8 à 80 % en masse, bornes incluses.
PCT/JP2018/042524 2017-11-16 2018-11-16 Film intermédiaire pour la stratification de verre et verre feuilleté utilisant celui-ci WO2019098335A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4364786A (en) * 1981-03-23 1982-12-21 Advanced Glass Systems Corp. Process for making safety glass laminates subject to nonsymmetrical thermal stress
JPH07267692A (ja) * 1994-03-25 1995-10-17 Sekisui Chem Co Ltd 合わせガラス用中間膜
JPH1025390A (ja) * 1996-05-07 1998-01-27 Sekisui Chem Co Ltd 合わせガラス用中間膜及びこれを用いた合わせガラス
JP2002503627A (ja) * 1998-02-23 2002-02-05 サン−ゴバン グラス フランス 裂傷防止ガラス
US20160053102A1 (en) * 2013-03-22 2016-02-25 Kuraray Co., Ltd. Polyvinyl acetal composition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4364786A (en) * 1981-03-23 1982-12-21 Advanced Glass Systems Corp. Process for making safety glass laminates subject to nonsymmetrical thermal stress
JPH07267692A (ja) * 1994-03-25 1995-10-17 Sekisui Chem Co Ltd 合わせガラス用中間膜
JPH1025390A (ja) * 1996-05-07 1998-01-27 Sekisui Chem Co Ltd 合わせガラス用中間膜及びこれを用いた合わせガラス
JP2002503627A (ja) * 1998-02-23 2002-02-05 サン−ゴバン グラス フランス 裂傷防止ガラス
US20160053102A1 (en) * 2013-03-22 2016-02-25 Kuraray Co., Ltd. Polyvinyl acetal composition

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