WO2021117596A1 - 合わせガラス用中間膜及び合わせガラス - Google Patents
合わせガラス用中間膜及び合わせガラス Download PDFInfo
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- WO2021117596A1 WO2021117596A1 PCT/JP2020/045018 JP2020045018W WO2021117596A1 WO 2021117596 A1 WO2021117596 A1 WO 2021117596A1 JP 2020045018 W JP2020045018 W JP 2020045018W WO 2021117596 A1 WO2021117596 A1 WO 2021117596A1
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Images
Classifications
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- 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
- B32B17/10761—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 vinyl acetal
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- 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
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Definitions
- the present invention relates to an interlayer film for laminated glass used for obtaining laminated glass.
- the present invention also relates to a laminated glass using the above-mentioned interlayer film for laminated glass.
- Laminated glass has excellent safety because the amount of scattered glass fragments is small even if it is damaged by an external impact. Therefore, the laminated glass is widely used in automobiles, railroad vehicles, aircraft, ships, buildings, and the like.
- the laminated glass is generally manufactured by sandwiching an interlayer film for laminated glass between two glass plates, performing high-temperature and high-pressure treatment with an autoclave, and crimping the interlayer film and the glass plate (for example).
- Patent Document 1 Japanese Patent Document 1
- the high temperature and high pressure treatment by autoclave at the time of manufacturing laminated glass is performed under the conditions of, for example, 130 ° C. or higher and 1 MPa or higher.
- high-temperature and high-pressure treatment by autoclave is a process that requires a large amount of capital investment and emits a large amount of carbon dioxide.
- the functional film may deteriorate when high temperature and high pressure treatment by an autoclave is performed.
- An object of the present invention is to provide an interlayer film for laminated glass that can suppress the occurrence of foaming at the edge of the laminated glass and enhance the transparency of the laminated glass without performing high-temperature and high-pressure treatment by an autoclave. To provide. Another object of the present invention is to provide a laminated glass using the above-mentioned interlayer film for laminated glass.
- an interlayer film for laminated glass having a structure of one layer or a structure of two or more layers, includes a first layer, and has a diameter of 8 mm and a thickness obtained by cutting out the first layer.
- the amount of change in the thickness of the test sample A before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less.
- laminated glass interlayer film may be abbreviated as “intermediate film”).
- Compression creep test With a load of 410 g applied to test sample A, the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes. The thickness of the test sample A at 30 ° C. immediately after holding at 30 ° C. for 5 minutes before starting the compression creep test and the thickness of the test sample A immediately after holding at 90 ° C. for 5 minutes at the end of the compression creep test. The absolute value of the difference is the amount of change in the thickness of the test sample A before and after the compression creep test.
- an interlayer film for laminated glass having a structure of one layer or a structure of two or more layers, comprising a first layer having a thickness of 200 ⁇ m or more and 900 ⁇ m or less, and the first layer.
- interlayer film for laminated glass in which the amount of change in the thickness of the laminated glass is 50 ⁇ m or more and 325 ⁇ m or less.
- Compression creep test With a load of 410 g applied to test sample B, the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes. The thickness of the test sample B at 30 ° C. immediately after holding at 30 ° C. for 30 minutes before starting the compression creep test, and the thickness of the test sample B immediately after holding at 90 ° C. for 5 minutes at the end of the compression creep test. The absolute value of the difference is the amount of change in the thickness of the test sample B before and after the compression creep test.
- an interlayer film for laminated glass having a one-layer structure or two or more layers, having a first layer, and the thickness of the interlayer film is 80 ⁇ m or more and 1600 ⁇ m or less, and the interlayer film is provided.
- interlayer film for laminated glass (in this specification, “intermediate film for laminated glass” may be abbreviated as “intermediate film”) having a change amount of 50 ⁇ m or more and 325 ⁇ m or less is provided.
- Compression creep test With a load of 410 g applied to the test sample C, the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes. The absolute value of the difference between the thickness of the test sample C at 30 ° C. at the start of the compression creep test and the thickness of the test sample C immediately after holding at 90 ° C. for 5 minutes at the end of the compression creep test is determined before and after the compression creep test. The amount of change in the thickness of the test sample C of.
- the first layer contains a thermoplastic resin and a plasticizer.
- thermoplastic resin contained in the first layer is a polyvinyl acetal resin.
- the interlayer film has a structure of two or more layers, further includes a second layer, and the first surface side of the first layer has the first layer. Two layers are arranged.
- the first layer is a surface layer in the interlayer film.
- the first laminated glass member, the second laminated glass member, and the above-mentioned interlayer film for laminated glass are provided, and the first laminated glass member and the second laminated glass are provided.
- a laminated glass is provided in which the interlayer film for laminated glass is arranged between the member and the member.
- the interlayer film according to the present invention has a one-layer structure or a two-layer or more structure.
- the interlayer film according to the present invention includes a first layer.
- the test samples before and after the compression creep test were performed.
- the amount of change in the thickness of A is 50 ⁇ m or more and 325 ⁇ m or less.
- the interlayer film according to the present invention has the above-mentioned structure, it is possible to suppress the occurrence of foaming at the edge of the laminated glass without performing high-temperature and high-pressure treatment by an autoclave, and the laminated glass is transparent. You can improve your sex.
- the interlayer film according to the present invention has a one-layer structure or a two-layer or more structure.
- the interlayer film according to the present invention includes a first layer having a thickness of 200 ⁇ m or more and 900 ⁇ m or less.
- the interlayer film according to the present invention has the above-mentioned structure, it is possible to suppress the occurrence of foaming at the edge of the laminated glass without performing high-temperature and high-pressure treatment by an autoclave, and the laminated glass is transparent. You can improve your sex.
- the interlayer film according to the present invention has a one-layer structure or a two-layer or more structure.
- the interlayer film according to the present invention includes a first layer.
- the thickness of the interlayer film is 80 ⁇ m or more and 1600 ⁇ m or less.
- the amount of change in the thickness of the test sample C before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less.
- the interlayer film according to the present invention has the above-mentioned structure, it is possible to suppress the occurrence of foaming at the edge of the laminated glass without performing high-temperature and high-pressure treatment by an autoclave, and the laminated glass is transparent. You can improve your sex.
- FIG. 1 is a cross-sectional view schematically showing an interlayer film for laminated glass according to the first embodiment of the present invention.
- FIG. 2 is a cross-sectional view schematically showing an interlayer film for laminated glass according to a second embodiment of the present invention.
- FIG. 3 is a cross-sectional view schematically showing an interlayer film for laminated glass according to a third embodiment of the present invention.
- FIG. 4 is a cross-sectional view schematically showing an example of a laminated glass using the interlayer film for laminated glass shown in FIG. 5 (a) to 5 (e) are examples of photographed images in which foaming at the edges of the laminated glass is evaluated. 5 (a) to 5 (e) are examples of photographed images in which the transparency of the laminated glass is evaluated.
- the interlayer film for laminated glass according to the present invention (hereinafter, may be abbreviated as "intermediate film”) has a structure of one layer or a structure of two or more layers.
- the interlayer film according to the present invention includes a first layer.
- the test samples before and after the compression creep test were performed.
- the amount of change in the thickness of A is 50 ⁇ m or more and 325 ⁇ m or less.
- Compression creep test With a load of 410 g applied to test sample A, the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes. The thickness of the test sample A at 30 ° C. immediately after holding at 30 ° C. for 5 minutes before starting the compression creep test and the thickness of the test sample A immediately after holding at 90 ° C. for 5 minutes at the end of the compression creep test. The absolute value of the difference is the amount of change in the thickness of the test sample A before and after the compression creep test.
- a load of 410 g was applied to the test sample A in an environment of 30 ° C., and the test sample A was held at 30 ° C. for 5 minutes with this load applied, and immediately after being held at 30 ° C. for 5 minutes, the test sample A was held at 30 ° C. The thickness of the test sample A is measured. Further, a load of 410 g was applied to the test sample A in an environment of 30 ° C., and the test sample A was held at 30 ° C. for 5 minutes with this load applied, and then the temperature was raised from 30 ° C. to 90 ° C. at 6 ° C./min. Then, the test sample A is held at 90 ° C.
- a load of 410 g is applied to the test sample A until the thickness of the test sample A at 90 ° C. immediately after being held at 90 ° C. for 5 minutes is measured, and the thickness is measured with the load applied.
- the interlayer film for laminated glass according to the present invention (hereinafter, may be abbreviated as "intermediate film”) has a structure of one layer or a structure of two or more layers.
- the interlayer film according to the present invention includes a first layer having a thickness of 200 ⁇ m or more and 900 ⁇ m or less.
- the intermediate film according to the present invention, the thickness of the first layer and T B [mu] m, for the test sample B of the first obtained by cutting the layer diameter 8mm and the thickness T B [mu] m, the compression creep test below When performed, the amount of change in the thickness of the test sample B before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less.
- Compression creep test With a load of 410 g applied to test sample B, the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes. The thickness of the test sample B at 30 ° C. immediately after holding at 30 ° C. for 30 minutes before starting the compression creep test, and the thickness of the test sample B immediately after holding at 90 ° C. for 5 minutes at the end of the compression creep test. The absolute value of the difference is the amount of change in the thickness of the test sample B before and after the compression creep test.
- a load of 410 g was applied to the test sample B in an environment of 30 ° C., and the test sample B was held at 30 ° C. for 30 minutes with this load applied, and immediately after being held at 30 ° C. for 30 minutes, the test sample B was held at 30 ° C. The thickness of the test sample B is measured. Further, a load of 410 g was applied to the test sample B in an environment of 30 ° C., and the test sample B was held at 30 ° C. for 30 minutes with this load applied, and then the temperature was raised from 30 ° C. to 90 ° C. at 6 ° C./min. Then, the test sample B is held at 90 ° C.
- a load of 410 g is applied to the test sample B until the thickness of the test sample B at 90 ° C. immediately after being held at 90 ° C. for 5 minutes is measured, and the thickness is measured with the load applied.
- the interlayer film for laminated glass according to the present invention (hereinafter, may be abbreviated as "intermediate film”) has a structure of one layer or a structure of two or more layers.
- the interlayer film according to the present invention includes a first layer.
- the thickness of the interlayer film is 80 ⁇ m or more and 1600 ⁇ m or less.
- the intermediate film according to the present invention the thickness of the intermediate film and T C [mu] m, for the test sample C of diameter 8mm and the thickness T C [mu] m obtained by cutting the intermediate film, when subjected to compression creep test described below,
- the amount of change in the thickness of the test sample C before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less.
- Compression creep test With a load of 410 g applied to the test sample C, the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes. The absolute value of the difference between the thickness of the test sample C at 30 ° C. at the start of the compression creep test and the thickness of the test sample C immediately after holding at 90 ° C. for 5 minutes at the end of the compression creep test is determined before and after the compression creep test. The amount of change in the thickness of the test sample C of.
- a load of 410 g is applied to the test sample C in an environment of 30 ° C., and the thickness of the test sample C at 30 ° C. immediately after the load is applied is measured. Further, a load of 410 g was applied to the test sample C in an environment of 30 ° C., and in the state where this load was applied, the temperature was raised from 30 ° C. to 90 ° C. at 6 ° C./min immediately after the load was applied, followed by The test sample C is held at 90 ° C. for 5 minutes, and the thickness of the test sample C at 90 ° C. immediately after the holding at 90 ° C. for 5 minutes is measured. A load of 410 g is applied to the test sample C until the thickness of the test sample C at 90 ° C. immediately after being held at 90 ° C. for 5 minutes is measured, and the thickness is measured with the load applied.
- the interlayer film according to the present invention has the above-mentioned structure, it is possible to suppress the occurrence of foaming at the edge of the laminated glass without performing high-temperature and high-pressure treatment by an autoclave, and the laminated glass is transparent. You can improve your sex.
- laminated glass can be produced under conditions of low temperature and low pressure (for example, 100 ° C. or lower and 0.5 MPa or lower) as compared with high temperature and high pressure treatment by autoclave. Therefore, laminated glass can be manufactured without making a large capital investment in equipment such as an autoclave facility, and carbon dioxide emissions during the production of laminated glass can be reduced. Furthermore, the production capacity of the conventional laminated glass manufacturing method in which the autoclave treatment is performed can be maintained.
- the interlayer film according to the present invention can enhance the penetration resistance of the laminated glass.
- the interlayer film according to the present invention has a one-layer structure or a two-layer or more structure.
- the interlayer film according to the present invention may have a one-layer structure, a two-layer structure, or a two-layer or more structure, and may have a three-layer structure. It may have a structure of three or more layers, or may have a structure of four or more layers.
- the interlayer film according to the present invention includes a first layer.
- the interlayer film according to the present invention may be a single-layer intermediate film including only the first layer, or may be a multi-layer intermediate film including the first layer and another layer.
- the interlayer film may have a structure of two or more layers, and may include a second layer in addition to the first layer.
- the second layer is arranged on the first surface side of the first layer.
- the interlayer film When the interlayer film is a multilayer interlayer film having a structure of two or more layers, the interlayer film has a first surface layer and a second surface layer.
- the interlayer film preferably includes the first layer as a surface layer in the interlayer film.
- the first layer is preferably the surface layer of the interlayer film.
- the interlayer film preferably includes the first layer as the first surface layer, and more preferably includes the first layer as the first surface layer and the second surface layer. .. In this case, the effect of the present invention can be exerted even more effectively.
- the first layer is a surface layer.
- the interlayer film may have a structure of three or more layers, and may include a third layer in addition to the first layer and the second layer.
- the third layer is arranged on the surface side of the second layer opposite to the first layer.
- Test sample A is a test sample having a diameter of 8 mm and a thickness of 0.8 mm obtained by cutting out the first layer.
- the test sample A can be produced by peeling the layer to be measured (first layer) from the interlayer film and then press-molding at 150 ° C.
- Test sample A is made to perform a compression creep test.
- Test sample B is prepared using a first layer having a thickness of 200 ⁇ m or more and 900 ⁇ m or less.
- the thickness of the first layer is taken as T B [mu] m, the test sample B, a test sample having a diameter of 8mm and the thickness T B [mu] m obtained by cutting the layer of the first. Therefore, the thickness of the first layer and the thickness of the test sample B are the same.
- the test sample C is prepared using an interlayer film having a thickness of 80 ⁇ m or more and 1600 ⁇ m or less.
- the thickness of the intermediate layer is taken as T C [mu] m, the test sample C, a test sample having a diameter of 8mm and the thickness T C [mu] m obtained by cutting the intermediate film. Therefore, the thickness of the interlayer film and the thickness of the test sample C are the same.
- test samples A, B, and C are placed between the first jig having a circular surface having a diameter of 8 mm and the second jig having a circular surface having a diameter of 8 mm.
- the temperature is raised from 30 ° C. to 90 ° C. at 6 ° C./min and held at 90 ° C. for 5 minutes.
- the thickness of test samples A, B, C at 30 ° C immediately after holding at 30 ° C for 5 minutes or 30 minutes before starting the compression creep test, and immediately after holding at 90 ° C for 5 minutes at the end of the compression creep test.
- the absolute value of the difference from the thickness of the test samples A, B, and C is taken as the amount of change in the thickness of the test samples A, B, and C before and after the compression creep test. Normally, the thickness of the test samples A, B, and C after the compression creep test is smaller than the thickness of the test samples A, B, and C before the compression creep test.
- Examples of the device that can be used in the compression creep test include a viscoelasticity measuring device (“RSA-G2” manufactured by TA Instruments Co., Ltd.) and the like. Further, the thicknesses of the test samples A, B, and C before and after the compression test can be measured by monitoring the gap between the compression measuring jigs of the viscoelasticity measuring device. When using RSA-G2, it is advisable to set the transducer mode to the spring and perform the measurement.
- RSA-G2 viscoelasticity measuring device
- the amount of change in the thickness of the test sample A before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less. If the amount of change is less than 50 ⁇ m, the transparency of the laminated glass tends to decrease. When the amount of change exceeds 325 ⁇ m, foaming is likely to occur at the edge of the laminated glass.
- the amount of change in the thickness of the test sample A before and after the compression creep test is preferably 75 ⁇ m or more, more preferably 100 ⁇ m or more, preferably 300 ⁇ m or less, and more preferably 250 ⁇ m or less.
- the amount of change is equal to or greater than the above lower limit, the transparency of the laminated glass can be further enhanced.
- the amount of change is not more than the above upper limit, the occurrence of foaming at the edge of the laminated glass can be suppressed more effectively.
- the amount of change in the thickness of the test sample B before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less. If the amount of change is less than 50 ⁇ m, the transparency of the laminated glass tends to decrease. When the amount of change exceeds 325 ⁇ m, foaming is likely to occur at the edge of the laminated glass.
- the amount of change in the thickness of the test sample B before and after the compression creep test is preferably 75 ⁇ m or more, more preferably 100 ⁇ m or more, preferably 300 ⁇ m or less, and more preferably 250 ⁇ m or less.
- the amount of change is equal to or greater than the above lower limit, the transparency of the laminated glass can be further enhanced.
- the amount of change is not more than the above upper limit, the occurrence of foaming at the edge of the laminated glass can be suppressed more effectively.
- the amount of change in the thickness of the test sample C before and after the compression creep test is 50 ⁇ m or more and 325 ⁇ m or less. If the amount of change is less than 50 ⁇ m, the transparency of the laminated glass tends to decrease. When the amount of change exceeds 325 ⁇ m, foaming is likely to occur at the edge of the laminated glass.
- the amount of change in the thickness of the test sample C before and after the compression creep test is preferably 75 ⁇ m or more, more preferably 100 ⁇ m or more, preferably 300 ⁇ m or less, and more preferably 250 ⁇ m or less.
- the amount of change is equal to or greater than the above lower limit, the transparency of the laminated glass can be further enhanced.
- the amount of change is not more than the above upper limit, the occurrence of foaming at the edge of the laminated glass can be suppressed more effectively.
- the following methods can be mentioned as a method of controlling the amount of change in the thickness of the test samples A, B, and C before and after the compression creep test within the above-mentioned preferable range.
- (1) When the average degree of polymerization of the thermoplastic resin contained in the first layer or the intermediate film is increased, the amount of change becomes smaller.
- (2) When the content of the plasticizer contained in the first layer or the intermediate film is increased, the amount of change becomes large.
- FIG. 1 is a cross-sectional view schematically showing an interlayer film for laminated glass according to the first embodiment of the present invention.
- the interlayer film 11 shown in FIG. 1 is a multilayer interlayer film having a structure of two or more layers.
- the interlayer film 11 is used to obtain a laminated glass.
- the interlayer film 11 is an interlayer film for laminated glass.
- the interlayer film 11 includes a first surface layer 1, an intermediate layer 3, and a second surface layer 2.
- the interlayer film 11 has a three-layer structure.
- the intermediate layer 3 is arranged and laminated on the first surface 1a of the first surface layer 1.
- An intermediate layer 3 is arranged and laminated on the first surface 2a of the second surface layer 2.
- the first surface layer 1 and the second surface layer 2 are the first layers, respectively.
- a second layer, which is an intermediate layer 3, is arranged on the first surface side of the first layer, which is a surface layer.
- the intermediate layer 3 is arranged between the first surface layer 1 and the second surface layer 2 and is sandwiched between the intermediate layers 3. Therefore, the interlayer film 11 has a multilayer structure (first layer / second layer / first layer) in which the first layer, the second layer, and the first layer are laminated in this order.
- the two first layers may be distinguished and referred to as the first layer A and the first layer B.
- FIG. 2 is a cross-sectional view schematically showing an interlayer film for laminated glass according to a second embodiment of the present invention.
- the interlayer film 11A shown in FIG. 2 is a single-layer interlayer film having a one-layer structure.
- the interlayer film 11A is the first layer.
- the interlayer film 11A is used to obtain a laminated glass.
- the interlayer film 11A is an interlayer film for laminated glass.
- FIG. 3 is a cross-sectional view schematically showing an interlayer film for laminated glass according to a third embodiment of the present invention.
- the interlayer film 11B shown in FIG. 3 is a multilayer interlayer film having a structure of two or more layers.
- the interlayer film 11B is used to obtain a laminated glass.
- the interlayer film 11B is an interlayer film for laminated glass.
- the interlayer film 11B includes a first surface layer 1B, a second intermediate layer 4B, a first intermediate layer 3B, a third intermediate layer 5B, and a second surface layer 2B.
- the interlayer film 11B has a five-layer structure.
- a second intermediate layer 4B is arranged and laminated on the first surface 1Ba of the first surface layer 1B.
- a third intermediate layer 5B is arranged and laminated on the first surface 2Ba of the second surface layer 2B.
- the first surface layer 1B and the second surface layer 2B are the first layers, respectively.
- a second layer which is a second intermediate layer 4B, is arranged on the first surface 1Ba side of the first layer, which is the first surface layer 1B.
- a third layer which is a third intermediate layer 5B, is arranged on the first surface 2Ba side of the first layer, which is the second surface layer 2B.
- a functional film which is the first intermediate layer 3B, is arranged and sandwiched between the second intermediate layer 4B and the third intermediate layer 5B.
- the functional film is a dimming film in the present embodiment.
- the interlayer film 11B has a multilayer structure (first layer / second layer /) in which the first layer, the second layer, the functional film, the third layer, and the first layer are laminated in this order. It has a functional film / third layer / first layer).
- the two first layers may be distinguished and referred to as the first layer A and the first layer B.
- the glass transition temperature of the first layer or the surface layer is preferably 20 ° C. or higher, more preferably 25 ° C. or higher, further preferably 30 ° C. or higher, preferably 45 ° C. or lower, more preferably 40 ° C. or lower. More preferably, it is 35 ° C. or lower.
- the glass transition temperature of the first layer or the surface layer is equal to or higher than the lower limit and lower than the upper limit, the effect of the present invention can be more effectively exhibited. Further, when the glass transition temperature of the first layer or the surface layer is not more than the upper limit, the penetration resistance of the laminated glass can be further improved.
- the softening point of the first layer or the surface layer is preferably 45 ° C. or higher, more preferably 50 ° C. or higher, preferably 70 ° C. or lower, and more preferably 65 ° C. or lower.
- the softening point of the first layer or the surface layer is equal to or higher than the lower limit and lower than the upper limit, the effect of the present invention can be more effectively exhibited. Further, when the softening point of the first layer or the surface layer is not more than the upper limit, the penetration resistance of the laminated glass can be further improved.
- the glass transition temperature and the softening point are determined by viscoelasticity measurement. Specifically, the viscoelasticity measurement is performed as follows.
- the viscoelasticity measuring device "ARES-G2" manufactured by TA Instruments A parallel plate having a diameter of 8 mm is used as a jig, and the measurement is performed under the conditions of shearing mode, the temperature is lowered from 100 ° C. to ⁇ 20 ° C. at a temperature lowering rate of 3 ° C./min, and the frequency is 1 Hz and the strain is 1%.
- the peak temperature of the loss tangent is defined as the glass transition temperature Tg (° C.).
- the softening point is the temperature at which the value of the tangent loss is minimized in the temperature range between Tg (° C.) and 100 ° C.
- Viscoelasticity may be measured using the interlayer film itself.
- the peak of tan ⁇ derived from the first layer may be read from the measurement result.
- each layer may be peeled off to measure the glass transition temperature of the layer to be measured.
- the laminated glass member and the interlayer film may be peeled off after cooling the laminated glass with liquid nitrogen or the like, and viscoelasticity measurement may be performed using the peeled interlayer film.
- the interlayer film preferably contains a thermoplastic resin (hereinafter, may be referred to as a thermoplastic resin (0)).
- a thermoplastic resin examples include polyvinyl acetate resin, polyester resin, polyvinyl acetal resin, vinyl acetate resin, polystyrene resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, polyurethane resin, and ionomer resin.
- examples thereof include polyvinyl alcohol resins, polyolefin resins such as aliphatic polyolefins, and (meth) acrylic resins (polymers having (meth) acryloyl groups).
- the polyoxymethylene (or polyacetal) resin is included in the polyvinyl acetal resin.
- a thermoplastic resin other than these may be used.
- the thermoplastic resin may be a thermoplastic elastomer.
- the interlayer film preferably contains a polyvinyl acetal resin (hereinafter, may be referred to as a polyvinyl acetal resin (0)) as the thermoplastic resin (0).
- the thermoplastic resin (0) contained in the interlayer film is preferably a polyvinyl acetal resin (0).
- the first layer (including a single-layer interlayer film) preferably contains a thermoplastic resin (hereinafter, may be referred to as a thermoplastic resin (1)).
- the first layer preferably contains a polyvinyl acetal resin (hereinafter, may be referred to as a polyvinyl acetal resin (1)) as the thermoplastic resin (1).
- the thermoplastic resin (1) contained in the first layer is preferably a polyvinyl acetal resin (1).
- the second layer preferably contains a thermoplastic resin (hereinafter, may be referred to as a thermoplastic resin (2)).
- the second layer preferably contains, as the thermoplastic resin (2), a polyvinyl acetal resin (hereinafter, may be referred to as a polyvinyl acetal resin (2)) or a polyester resin.
- the thermoplastic resin (2) contained in the second layer is preferably a polyvinyl acetal resin (2) or a polyester resin.
- the third layer preferably contains a thermoplastic resin (hereinafter, may be referred to as a thermoplastic resin (3)) or a polyester resin.
- the third layer preferably contains, as the thermoplastic resin (3), a polyvinyl acetal resin (hereinafter, may be referred to as a polyvinyl acetal resin (3)) or a polyester resin.
- the thermoplastic resin (3) contained in the third layer is preferably a polyvinyl acetal resin (3) or a polyester resin.
- the thermoplastic resin (1), the thermoplastic resin (2), and the thermoplastic resin (3) may be the same or different.
- the thermoplastic resin (1) is preferably different from the thermoplastic resin (2) and the thermoplastic resin (3) because the sound insulation is further improved.
- the polyvinyl acetal resin (1), the polyvinyl acetal resin (2), and the polyvinyl acetal resin (3) may be the same or different.
- the polyvinyl acetal resin (1) is preferably different from the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) because the sound insulation property is further improved. Only one type of the above-mentioned thermoplastic resin (0), the above-mentioned thermoplastic resin (1), the above-mentioned thermoplastic resin (2), and the above-mentioned thermoplastic resin (3) may be used, or two or more types may be used in combination. You may. As the polyvinyl acetal resin (0), the polyvinyl acetal resin (1), the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3), only one type may be used, or two or more types may be used in combination. You may.
- the polyvinyl acetal resin can be produced, for example, by acetalizing polyvinyl alcohol (PVA) with an aldehyde.
- PVA polyvinyl alcohol
- the polyvinyl acetal resin is preferably an acetal product of polyvinyl alcohol.
- the polyvinyl alcohol can be obtained, for example, by saponifying polyvinyl acetate.
- the saponification degree of the polyvinyl alcohol is generally in the range of 70 mol% to 99.9 mol%.
- the average degree of polymerization of the polyvinyl alcohol (PVA) is preferably 200 or more, more preferably 500 or more, even more preferably 1500 or more, still more preferably 1600 or more, particularly preferably 2600 or more, and most preferably 2700 or more. It is preferably 5000 or less, more preferably 4000 or less, and even more preferably 3500 or less.
- the average degree of polymerization is at least the above lower limit, the penetration resistance of the laminated glass is further increased.
- the average degree of polymerization is not more than the above upper limit, molding of the interlayer film becomes easy.
- the average degree of polymerization of the above polyvinyl alcohol is determined by a method based on JIS K6726 "polyvinyl alcohol test method".
- the polyvinyl acetal resin (1) may be a mixture of two or more kinds of polyvinyl acetal resins having different average degrees of polymerization of polyvinyl alcohol.
- the polyvinyl acetal resin (1) has a first polyvinyl acetal resin (1A) having an average degree of polymerization of polyvinyl alcohol of 1500 or more and a second polyvinyl having an average degree of polymerization of polyvinyl alcohol of 1000 or less. It is preferably a mixture with the acetal resin (1B).
- the average degree of polymerization of polyvinyl alcohol in the polyvinyl acetal resin (1) is preferably 900 or more, more preferably 1000 or more, preferably 1400 or less, and more preferably 1300 or less.
- the average degree of polymerization of polyvinyl alcohol in the first polyvinyl acetal resin (1A) is preferably 1500 or more, more preferably 1600 or more, preferably 2000 or less, and more preferably 1800 or less.
- the average degree of polymerization of polyvinyl alcohol in the second polyvinyl acetal resin (1B) is preferably 400 or more, more preferably 500 or more, preferably 1000 or less, and more preferably 900 or less.
- the absolute value of the difference in the average degree of polymerization is preferably 500 or more, more preferably 600 or more. It is preferably 1200 or less, more preferably 1100 or less.
- the content of the second polyvinyl acetal resin (1B) is preferably 20% by weight or more in a total of 100% by weight of the first polyvinyl acetal resin (1A) and the second polyvinyl acetal resin (1B). , More preferably 25% by weight or more, preferably 80% by weight or less, and more preferably 75% by weight or less.
- the content of the second polyvinyl acetal resin (1B) is not less than the above lower limit and not more than the above upper limit, the effect of the present invention can be exhibited even more effectively.
- the carbon number of the acetal group contained in the polyvinyl acetal resin is not particularly limited.
- the aldehyde used in producing the polyvinyl acetal resin is not particularly limited.
- the acetal group in the polyvinyl acetal resin preferably has 3 to 5 carbon atoms, and more preferably 3 or 4 carbon atoms. When the acetal group in the polyvinyl acetal resin has 3 or more carbon atoms, the glass transition temperature of the interlayer film becomes sufficiently low.
- the acetal group in the polyvinyl acetal resin may have 4 or 5 carbon atoms.
- the above aldehyde is not particularly limited. Generally, an aldehyde having 1 to 10 carbon atoms is preferably used. Examples of the aldehyde having 1 to 10 carbon atoms include propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-barrelaldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, and n-nonylaldehyde. , N-decylaldehyde, formaldehyde, acetaldehyde, benzaldehyde and the like.
- the aldehyde is preferably propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-hexylaldehyde or n-barrelaldehyde, more preferably propionaldehyde, n-butyraldehyde or isobutyraldehyde, and n-butyl. It is more preferably aldehyde. Only one kind of the above aldehyde may be used, or two or more kinds may be used in combination.
- the interlayer film preferably contains polyvinyl butyral resin as the thermoplastic resin (0).
- the interlayer film preferably contains a polyvinyl butyral resin as the polyvinyl acetal resin (0).
- the thermoplastic resin (0) contained in the interlayer film is preferably polyvinyl butyral resin.
- the first layer preferably contains a polyvinyl butyral resin as the thermoplastic resin (1).
- the first layer preferably contains a polyvinyl butyral resin as the polyvinyl acetal resin (1).
- the thermoplastic resin (1) contained in the first layer is preferably polyvinyl butyral resin.
- the second layer preferably contains a polyvinyl butyral resin as the thermoplastic resin (2).
- the second layer preferably contains a polyvinyl butyral resin as the polyvinyl acetal resin (2).
- the thermoplastic resin (2) contained in the second layer is preferably polyvinyl butyral resin.
- the third layer preferably contains a polyvinyl butyral resin as the thermoplastic resin (3).
- the third layer preferably contains a polyvinyl butyral resin as the polyvinyl acetal resin (3).
- the thermoplastic resin (3) contained in the third layer is preferably polyvinyl butyral resin.
- the polyvinyl butyral resin contained in the interlayer film, the first layer, the second layer, and the third layer only one type may be used, or two or more types may be used in combination.
- the hydroxyl group content (hydroxyl group amount) of the polyvinyl acetal resin (0) is preferably 15 mol% or more, more preferably 18 mol% or more, preferably 40 mol% or less, and more preferably 35 mol% or less. is there.
- the content of the hydroxyl groups is at least the above lower limit, the adhesive force of the interlayer film becomes even higher. Further, when the content of the hydroxyl group is not more than the above upper limit, the flexibility of the interlayer film is increased and the handling of the interlayer film becomes easy.
- the hydroxyl group content (hydroxyl group amount) of the polyvinyl acetal resin (1) is preferably 25 mol% or more, more preferably 28 mol% or more, more preferably 30 mol% or more, still more preferably 31.5 mol%. As mentioned above, it is more preferably 32 mol% or more, and particularly preferably 33 mol% or more.
- the hydroxyl group content (hydroxyl group amount) of the polyvinyl acetal resin (1) is preferably 38 mol% or less, more preferably 37 mol% or less, still more preferably 36.5 mol% or less, and particularly preferably 36 mol% or less. Is.
- the content of the hydroxyl groups is at least the above lower limit, the adhesive force of the interlayer film becomes even higher. Further, when the content of the hydroxyl group is not more than the above upper limit, the flexibility of the interlayer film is increased and the handling of the interlayer film becomes easy.
- the content of each hydroxyl group of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 10 mol% or more, more preferably 15 mol% or more, still more preferably 17 mol% or more, preferably 17 mol% or more. It is 25 mol% or less, more preferably 20 mol% or less, still more preferably 19 mol% or less, and particularly preferably 18 mol% or less.
- the content of the hydroxyl groups is at least the above lower limit, the mechanical strength of the interlayer film becomes even higher.
- the hydroxyl group content of the polyvinyl acetal resins (2) and (3) is 15 mol% or more, the reaction efficiency is high and the productivity is excellent, and when it is 25 mol% or less, the sound insulation of the laminated glass is good. It will be even higher. Further, when the content of the hydroxyl group is not more than the above upper limit, the flexibility of the interlayer film is increased and the handling of the interlayer film becomes easy.
- the hydroxyl group content of the polyvinyl acetal resin (1) is higher than the hydroxyl group content of the polyvinyl acetal resin (2).
- the hydroxyl group content of the polyvinyl acetal resin (1) is preferably higher than the hydroxyl group content of the polyvinyl acetal resin (3).
- the absolute value of the difference between the hydroxyl group content of the polyvinyl acetal resin (1) and the hydroxyl group content of the polyvinyl acetal resin (2) is preferably 1 mol% or more.
- the absolute value of the difference between the hydroxyl group content of the polyvinyl acetal resin (1) and the hydroxyl group content of the polyvinyl acetal resin (3) is preferably 1 mol% or more. , More preferably 5 mol% or more, further preferably 9 mol% or more, particularly preferably 10 mol% or more, and most preferably 12 mol% or more.
- the absolute value of the difference from the hydroxyl group content of the polyvinyl acetal resin (3) is preferably 20 mol% or less.
- the hydroxyl group content of the polyvinyl acetal resin is a value obtained by dividing the amount of ethylene groups to which the hydroxyl groups are bonded by the total amount of ethylene groups in the main chain, and indicating the mole fraction as a percentage.
- the amount of ethylene groups to which the hydroxyl groups are bonded can be measured, for example, in accordance with JIS K6728 "Polyvinyl butyral test method".
- the degree of acetylation (acetyl group amount) of the polyvinyl acetal resin (0) is preferably 0.1 mol% or more, more preferably 0.3 mol% or more, still more preferably 0.5 mol% or more, and is preferable. Is 30 mol% or less, more preferably 25 mol% or less, still more preferably 20 mol% or less.
- the degree of acetylation is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high.
- the degree of acetylation is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass becomes high.
- the degree of acetylation (acetyl group amount) of the polyvinyl acetal resin (1) is preferably 0.01 mol% or more, more preferably 0.5 mol% or more, preferably 10 mol% or less, more preferably 2 It is less than mol%.
- the degree of acetylation is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high.
- the degree of acetylation is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass becomes high.
- the degree of acetylation of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 0.01 mol% or more, more preferably 0.1 mol% or more, still more preferably 7 mol% or more. It is more preferably 9 mol% or more, preferably 30 mol% or less, more preferably 25 mol% or less, still more preferably 24 mol% or less, and particularly preferably 20 mol% or less.
- the degree of acetylation is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high.
- the degree of acetylation is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass becomes high.
- the degree of acetylation of the polyvinyl acetal resins (2) and (3) is 0.1 mol% or more and 25 mol% or less, the penetration resistance is excellent.
- the degree of acetylation is a value obtained by dividing the amount of ethylene groups to which acetyl groups are bonded by the total amount of ethylene groups in the main chain and indicating the mole fraction as a percentage.
- the amount of ethylene group to which the acetyl group is bonded can be measured according to, for example, JIS K6728 "Polyvinyl butyral test method".
- the degree of acetalization of the polyvinyl acetal resin (0) is preferably 60 mol% or more, more preferably 63 mol% or more, preferably 85 mol% or less, and more. It is preferably 75 mol% or less, more preferably 70 mol% or less.
- degree of acetalization is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high.
- degree of acetalization is not more than the above upper limit, the reaction time required for producing the polyvinyl acetal resin is shortened.
- the degree of acetalization of the polyvinyl acetal resin (1) is preferably 55 mol% or more, more preferably 60 mol% or more, preferably 75 mol% or less, and more. It is preferably 71 mol% or less.
- degree of acetalization is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high.
- degree of acetalization is not more than the above upper limit, the reaction time required for producing the polyvinyl acetal resin is shortened.
- the degree of acetalization (in the case of polyvinyl butyral resin, the degree of butyralization) of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 47 mol% or more, more preferably 60 mol% or more. It is preferably 85 mol% or less, more preferably 80 mol% or less, still more preferably 75 mol% or less.
- the degree of acetalization is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high.
- the degree of acetalization is not more than the above upper limit, the reaction time required for producing the polyvinyl acetal resin is shortened.
- the above acetalization degree is obtained as follows. First, the value obtained by subtracting the amount of ethylene groups to which the hydroxyl group is bonded and the amount of ethylene groups to which the acetyl group is bonded is obtained from the total amount of ethylene groups in the main chain. The obtained value is divided by the total amount of ethylene groups in the main chain to obtain the mole fraction. The value obtained by expressing this mole fraction as a percentage is the degree of acetalization.
- the hydroxyl group content (hydroxyl group amount), acetalization degree (butyralization degree) and acetylation degree are preferably calculated from the results measured by a method based on JIS K6728 "polyvinyl butyral test method". However, the measurement by ASTM D1396-92 may be used.
- the polyvinyl acetal resin is a polyvinyl butyral resin
- the hydroxyl group content (hydroxyl group amount), acetalization degree (butyralization degree), and acetylation degree are based on JIS K6728 "polyvinyl butyral test method”. Can be calculated from the results measured by.
- the content of the polyvinyl acetal resin in 100% by weight of the thermoplastic resin contained in the interlayer film is preferably 10% by weight or more, more preferably 30% by weight or more, still more preferably 50% by weight or more, still more preferably. It is 70% by weight or more, particularly preferably 80% by weight or more, and most preferably 90% by weight or more.
- the content of the polyvinyl acetal resin in 100% by weight of the thermoplastic resin contained in the interlayer film is preferably 100% by weight or less.
- the main component (50% by weight or more) of the thermoplastic resin of the interlayer film is preferably a polyvinyl acetal resin.
- the content of the polyvinyl acetal resin in 100% by weight of the thermoplastic resin contained in the first layer is preferably 10% by weight or more, more preferably 30% by weight or more, still more preferably 50% by weight or more, and further. It is preferably 70% by weight or more, particularly preferably 80% by weight or more, and most preferably 90% by weight or more.
- the content of the polyvinyl acetal resin in 100% by weight of the thermoplastic resin contained in the first layer is preferably 100% by weight or less.
- the main component (50% by weight or more) of the thermoplastic resin in the first layer is preferably a polyvinyl acetal resin.
- the interlayer film preferably contains a plasticizer.
- the first layer (including a single-layer interlayer film) preferably contains a plasticizer (hereinafter, may be referred to as a plasticizer (1)).
- the second layer preferably contains a plasticizer (hereinafter, may be referred to as a plasticizer (2)).
- the third layer preferably contains a plasticizer (hereinafter, may be referred to as a plasticizer (3)).
- the plasticizer is not particularly limited.
- the plasticizer (1), the plasticizer (2), and the plasticizer (3) may be the same or different.
- As the plasticizer (1), the plasticizer (2), and the plasticizer (3) only one type may be used, or two or more types may be used in combination.
- plasticizer examples include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and organic phosphoric acid plasticizers such as organic phosphoric acid plasticizers and organic phosphite plasticizers. ..
- the plasticizer is preferably an organic ester plasticizer.
- the plasticizer is preferably a liquid plasticizer.
- Examples of the monobasic organic acid ester include glycol esters obtained by reacting glycol with a monobasic organic acid.
- Examples of the glycol include triethylene glycol, tetraethylene glycol, tripropylene glycol and the like.
- Examples of the monobasic organic acid include butyric acid, isobutyric acid, caproic acid, 2-ethylbutyric acid, heptyl acid, n-octyl acid, 2-ethylhexic acid, n-nonyl acid, decyl acid and benzoic acid.
- polybasic organic acid ester examples include an ester compound of a multibasic organic acid and an alcohol having a linear or branched structure having 4 to 8 carbon atoms.
- polybasic organic acid examples include adipic acid, sebacic acid, azelaic acid and the like.
- organic ester plasticizer examples include triethylene glycol di-2-ethylpropanoate, triethylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylhexanoate, and triethylene glycol dicaprelate.
- Triethylene Glycol Di-n-Octanoate Triethylene Glycol Di-n-Heptanoate, Tetraethylene Glycol Di-n-Heptanoate, Dibutyl Sevacate, Dioctyl Azelate, Dibutyl Carbitol Adipate, Ethylene Glycol Di-2-Ethyl Butyrate, 1,3-propylene glycol di-2-ethylbutyrate, 1,4-butylene glycol di-2-ethylbutyrate, diethylene glycol di-2-ethylbutyrate, diethylene glycol di-2-ethylhexanoate, dipropylene glycol Di-2-ethylbutyrate, triethylene glycol di-2-ethylpentanoate, tetraethylene glycol di-2-ethylbutyrate, diethylene glycol dicaprylate, diethylene glycol dibenzoate, dipropylene glycol dibenzoate, dihexyl adipate
- organophosphate plasticizer examples include tributoxyethyl phosphate, isodecylphenyl phosphate, triisopropyl phosphate and the like.
- the plasticizer is preferably a diester plasticizer represented by the following formula (1).
- R1 and R2 each represent an organic group having 2 to 10 carbon atoms
- R3 represents an ethylene group, an isopropylene group or an n-propylene group
- p represents an integer of 3 to 10.
- Each of R1 and R2 in the above formula (1) is preferably an organic group having 5 to 10 carbon atoms, and more preferably an organic group having 6 to 10 carbon atoms.
- the plasticizer preferably contains triethylene glycol di-2-ethylhexanoate (3GO), triethylene glycol di-2-ethylbutyrate (3GH) or triethylene glycol di-2-ethylpropanoate. ..
- the plasticizer preferably contains triethylene glycol di-2-ethylhexanoate (3GO) or triethylene glycol di-2-ethylbutyrate (3GH), and more preferably triethylene glycol di-2-ethylhexanoate. It is more preferred to include ate.
- the thermoplastic resin (1) 100 parts by weight of the thermoplastic resin (1) (100 parts by weight of the polyvinyl acetal resin (1) when the thermoplastic resin (1) is the polyvinyl acetal resin (1)).
- the content of the plasticizer (1) is defined as the content (1).
- the content (1) is preferably 20 parts by weight or more, more preferably 25 parts by weight or more, further preferably 28 parts by weight or more, preferably 40 parts by weight or less, more preferably 38 parts by weight or less, still more preferably. Is 35 parts by weight or less, particularly preferably 33 parts by weight or less.
- the content (1) is at least the above lower limit, the flexibility of the interlayer film is increased and the handling of the interlayer film becomes easy.
- the content (1) is not more than the upper limit, the bending rigidity becomes even higher.
- the content (1) is at least the above lower limit and at least the above upper limit, the effect of the present invention can be exhibited even more effectively.
- the thermoplastic resin (2) 100 parts by weight of the thermoplastic resin (2) (100 parts by weight of the polyvinyl acetal resin (2) when the thermoplastic resin (2) is the polyvinyl acetal resin (2)).
- the content of the plasticizer (2) is defined as the content (2).
- the content (2) is preferably 50 parts by weight or more, more preferably 55 parts by weight or more, further preferably 60 parts by weight or more, preferably 100 parts by weight or less, more preferably 90 parts by weight or less, still more preferably. Is 85 parts by weight or less, particularly preferably 80 parts by weight or less.
- the content (2) is at least the above lower limit, the flexibility of the interlayer film is increased and the handling of the interlayer film becomes easy.
- the content (2) is not more than the above upper limit, the penetration resistance of the laminated glass is further increased.
- the thermoplastic resin (3) 100 parts by weight of the thermoplastic resin (3) (100 parts by weight of the polyvinyl acetal resin (3) when the thermoplastic resin (3) is the polyvinyl acetal resin (3)).
- the content of the plasticizer (3) is defined as the content (3).
- the content (3) is preferably 50 parts by weight or more, more preferably 55 parts by weight or more, further preferably 60 parts by weight or more, preferably 100 parts by weight or less, more preferably 90 parts by weight or less, still more preferably. Is 85 parts by weight or less, particularly preferably 80 parts by weight or less.
- the content (3) is at least the above lower limit, the flexibility of the interlayer film is increased and the handling of the interlayer film becomes easy.
- the content (3) is not more than the above upper limit, the penetration resistance of the laminated glass is further increased.
- the above-mentioned content (1) and the above-mentioned content (2) may be the same or different.
- the content (1) and the content (3) may be the same or different. From the viewpoint of enhancing the sound insulation of the laminated glass, the above-mentioned content (1) and the above-mentioned content (2) are the same, or the above-mentioned content (1) is smaller than the above-mentioned content (2). Is preferable, and the content (1) is more preferably smaller than the content (2). From the viewpoint of enhancing the sound insulation of the laminated glass, the above-mentioned content (1) and the above-mentioned content (3) are the same, or the above-mentioned content (1) is smaller than the above-mentioned content (3). Is preferable, and the content (1) is more preferably smaller than the content (3).
- the absolute value of the difference between the above-mentioned content (2) and the above-mentioned content (1), and the difference between the above-mentioned content (3) and the above-mentioned content (1) is preferably 10 parts by weight or more, more preferably 15 parts by weight or more, and further preferably 20 parts by weight or more.
- the absolute value of the difference between the content (2) and the content (1) and the absolute value of the difference between the content (3) and the content (1) are preferably 80 parts by weight or less, respectively. It is more preferably 75 parts by weight or less, still more preferably 70 parts by weight or less.
- the interlayer film preferably contains a heat-shielding substance.
- the first layer (including a single-layer interlayer film) preferably contains a heat-shielding substance.
- the second layer preferably contains a heat-shielding substance.
- the third layer preferably contains a heat-shielding substance. Only one kind of the heat-shielding substance may be used, or two or more kinds thereof may be used in combination.
- the heat-shielding substance preferably contains at least one component X of the phthalocyanine compound, the naphthalocyanine compound and the anthracyanine compound, or contains heat-shielding particles. In this case, both the component X and the heat-shielding particles may be contained.
- the interlayer film preferably contains at least one component X of the phthalocyanine compound, the naphthalocyanine compound and the anthracyanine compound.
- the first layer preferably contains the component X.
- the second layer preferably contains the component X.
- the third layer preferably contains the component X.
- the component X is a heat-shielding substance. As the component X, only one kind may be used, or two or more kinds may be used in combination.
- the above component X is not particularly limited.
- As the component X conventionally known phthalocyanine compounds, naphthalocyanine compounds and anthracyanine compounds can be used.
- the component X examples include phthalocyanine, phthalocyanine derivatives, naphthalocyanine, naphthalocyanine derivatives, anthracyanine and anthracyanine derivatives, and the like.
- the phthalocyanine compound and the phthalocyanine derivative each preferably have a phthalocyanine skeleton.
- the naphthalocyanine compound and the derivative of the naphthalocyanine each have a naphthalocyanine skeleton.
- the anthracyanine compound and the derivative of the anthracynin each have an anthracyanine skeleton.
- the component X is preferably at least one selected from the group consisting of phthalocyanine, phthalocyanine derivative, naphthalocyanine and naphthalocyanine derivative. , Phthalocyanine and at least one of the derivatives of phthalocyanine are more preferable.
- the component X preferably contains a vanadium atom or a copper atom.
- the component X preferably contains a vanadium atom, and preferably contains a copper atom.
- the component X is more preferably at least one of a vanadium atom or a copper atom-containing phthalocyanine and a vanadium atom or a copper atom-containing phthalocyanine derivative. From the viewpoint of further increasing the heat-shielding property of the interlayer film and the laminated glass, it is preferable that the component X has a structural unit in which an oxygen atom is bonded to a vanadium atom.
- the content of the component X is preferably 0.001% by weight in 100% by weight of the interlayer film or 100% by weight of the layer containing the component X (first layer, second layer or third layer). As mentioned above, it is more preferably 0.005% by weight or more, further preferably 0.01% by weight or more, and particularly preferably 0.02% by weight or more.
- the content of the component X is preferably 0.2% by weight in 100% by weight of the interlayer film or 100% by weight of the layer containing the component X (first layer, second layer or third layer). Hereinafter, it is more preferably 0.1% by weight or less, further preferably 0.05% by weight or less, and particularly preferably 0.04% by weight or less.
- the content of the component X is not less than the above lower limit and not more than the above upper limit, the heat shielding property is sufficiently high and the visible light transmittance is sufficiently high.
- the visible light transmittance can be 70% or more.
- the interlayer film preferably contains heat-shielding particles.
- the first layer preferably contains the heat shield particles.
- the second layer preferably contains the heat shield particles.
- the third layer preferably contains the heat shield particles.
- the heat-shielding particles are heat-shielding substances. Infrared rays (heat rays) can be effectively blocked by using heat shield particles. Only one type of the heat shield particles may be used, or two or more types may be used in combination.
- the heat-shielding particles are more preferably metal oxide particles.
- the heat shield particles are preferably particles formed of metal oxides (metal oxide particles).
- infrared rays have a large thermal effect, and when infrared rays are absorbed by a substance, they are emitted as heat. For this reason, infrared rays are generally called heat rays.
- heat shield particles By using the heat shield particles, infrared rays (heat rays) can be effectively blocked.
- the heat-shielding particles mean particles that can absorb infrared rays.
- heat shield particles include aluminum-doped tin oxide particles, indium-doped tin oxide particles, antimony-doped tin oxide particles (ATO particles), gallium-doped zinc oxide particles (GZO particles), and indium-doped zinc oxide particles (IZO particles).
- Aluminum-doped zinc oxide particles (AZO particles), niob-doped titanium oxide particles, sodium-doped tungsten oxide particles, cesium-doped tungsten oxide particles, tallium-doped tungsten oxide particles, rubidium-doped tungsten oxide particles, tin-doped indium oxide particles (ITO particles) , Tin-doped zinc oxide particles, silicon-doped zinc oxide particles and other metal oxide particles, hexaborated lanthanum (LaB 6 ) particles and the like. Heat-shielding particles other than these may be used.
- metal oxide particles are preferable, ATO particles, GZO particles, IZO particles, ITO particles or tungsten oxide particles are more preferable, and ITO particles or tungsten oxide particles are particularly preferable.
- ITO particles tin-doped indium oxide particles
- tungsten oxide particles are also preferable because they have a high heat ray shielding function and are easily available.
- the tungsten oxide particles are preferably metal-doped tungsten oxide particles.
- the above-mentioned "tungsten oxide particles” include metal-doped tungsten oxide particles.
- Specific examples of the metal-doped tungsten oxide particles include sodium-doped tungsten oxide particles, cesium-doped tungsten oxide particles, tallium-doped tungsten oxide particles, rubidium-doped tungsten oxide particles, and the like.
- Cesium-doped tungsten oxide particles are particularly preferable from the viewpoint of further increasing the heat-shielding property of the interlayer film and the laminated glass.
- the cesium-doped tungsten oxide particles are preferably tungsten oxide particles represented by the formula: Cs 0.33 WO 3.
- the average particle size of the heat shield particles is preferably 0.01 ⁇ m or more, more preferably 0.02 ⁇ m or more, preferably 0.1 ⁇ m or less, and more preferably 0.05 ⁇ m or less.
- the average particle size is at least the above lower limit, the heat ray shielding property becomes sufficiently high.
- the average particle size is not more than the above upper limit, the dispersibility of the heat shield particles becomes high.
- the above “average particle size” indicates the volume average particle size.
- the average particle size can be measured using a particle size distribution measuring device (“UPA-EX150” manufactured by Nikkiso Co., Ltd.) or the like.
- the content is preferably 0.01% by weight or more, more preferably 0.1% by weight or more, still more preferably 1% by weight or more, and particularly preferably 1.5% by weight or more.
- the content is preferably 6% by weight or less, more preferably 5.5% by weight or less, still more preferably 4% by weight or less, particularly preferably 3.5% by weight or less, and most preferably 3% by weight or less.
- the content of the heat-shielding particles is not less than the above lower limit and not more than the above upper limit, the heat-shielding property is sufficiently high and the visible light transmittance is sufficiently high.
- the interlayer film preferably contains an alkali metal salt, an alkaline earth metal salt other than the magnesium salt, and at least one metal salt among the magnesium salts (hereinafter, may be referred to as metal salt M). .. Further, since magnesium is an alkaline earth metal, it is preferable that the interlayer film contains at least one metal salt M among the alkali metal salt and the alkaline earth metal salt.
- the first layer preferably contains the metal salt M.
- the second layer preferably contains the metal salt M.
- the third layer preferably contains the metal salt M.
- the alkaline earth metal means six kinds of metals, Be, Mg, Ca, Sr, Ba, and Ra.
- the metal salt M By using the metal salt M, it becomes easy to control the adhesiveness between the interlayer film and the laminated glass member such as a glass plate or the adhesiveness between each layer in the interlayer film.
- the metal salt M only one kind may be used, or two or more kinds may be used in combination.
- the metal salt M preferably contains at least one metal selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr and Ba.
- the metal salt contained in the interlayer film preferably contains at least one metal among K and Mg.
- the metal salt M is an alkali metal salt of an organic acid having 2 to 16 carbon atoms, an alkaline earth metal salt of an organic acid having 2 to 16 carbon atoms other than a magnesium salt of an organic acid having 2 to 16 carbon atoms, or an alkaline earth metal salt of an organic acid having 2 to 16 carbon atoms.
- a magnesium salt of an organic acid having 2 to 16 carbon atoms is more preferable.
- the metal salt M may be an alkali metal salt of an organic acid having 2 to 16 carbon atoms or an alkaline earth metal salt of an organic acid having 2 to 16 carbon atoms.
- the metal salt M is more preferably a magnesium carboxylic acid salt having 2 to 16 carbon atoms or a potassium carboxylic acid salt having 2 to 16 carbon atoms.
- magnesium carboxylic acid salt having 2 to 16 carbon atoms and the potassium carboxylic acid salt having 2 to 16 carbon atoms include magnesium acetate, potassium acetate, magnesium propionate, potassium propionate, magnesium 2-ethylbutyrate, and 2-ethylbutanoic acid. Examples thereof include potassium, magnesium 2-ethylhexanoate and potassium 2-ethylhexanoate.
- the total content of Mg and K in the interlayer film containing the metal salt M or the layer containing the metal salt M (first layer, second layer or third layer) is preferably 5 ppm or more. It is preferably 10 ppm or more, more preferably 20 ppm or more, preferably 300 ppm or less, more preferably 250 ppm or less, still more preferably 200 ppm or less.
- the adhesiveness between the interlayer film and the laminated glass member (glass plate, etc.) or the adhesiveness between the interlayer films in the interlayer film is further controlled. it can.
- the interlayer film preferably contains an ultraviolet shielding agent.
- the first layer preferably contains an ultraviolet shielding agent.
- the second layer preferably contains an ultraviolet shielding agent.
- the third layer preferably contains an ultraviolet shielding agent. Due to the use of the ultraviolet shielding agent, the visible light transmittance is less likely to decrease even if the interlayer film and the laminated glass are used for a long period of time. Only one kind of the above-mentioned ultraviolet shielding agent may be used, or two or more kinds may be used in combination.
- the above UV shielding agent includes a UV absorber.
- the ultraviolet shielding agent is preferably an ultraviolet absorber.
- the ultraviolet shielding agent examples include an ultraviolet shielding agent containing a metal atom, an ultraviolet shielding agent containing a metal oxide, an ultraviolet shielding agent having a benzotriazole structure (benzotriazole compound), and an ultraviolet shielding agent having a benzophenone structure (benzophenone compound). ), An ultraviolet shielding agent having a triazine structure (triazine compound), an ultraviolet shielding agent having a malonic acid ester structure (malonic acid ester compound), an ultraviolet shielding agent having a oxalic acid anilide structure (a oxalate anilide compound), and a benzoate structure Examples thereof include an ultraviolet shielding agent (benzoate compound).
- Examples of the ultraviolet shielding agent containing the metal atom include platinum particles, particles in which the surface of platinum particles is coated with silica, palladium particles, particles in which the surface of palladium particles is coated with silica, and the like.
- the UV shielding agent is preferably not heat shielding particles.
- the ultraviolet shielding agent is preferably an ultraviolet shielding agent having a benzotriazole structure, an ultraviolet shielding agent having a benzophenone structure, an ultraviolet shielding agent having a triazine structure, or an ultraviolet shielding agent having a benzoate structure.
- the ultraviolet shielding agent is more preferably an ultraviolet shielding agent having a benzotriazole structure or an ultraviolet shielding agent having a benzophenone structure, and further preferably an ultraviolet shielding agent having a benzotriazole structure.
- Examples of the ultraviolet shielding agent containing the metal oxide include zinc oxide, titanium oxide, cerium oxide and the like. Further, the surface of the ultraviolet shielding agent containing the metal oxide may be coated. Examples of the coating material on the surface of the ultraviolet shielding agent containing the metal oxide include an insulating metal oxide, a hydrolyzable organosilicon compound, and a silicone compound.
- the insulating metal oxide examples include silica, alumina and zirconia.
- the insulating metal oxide has a bandgap energy of, for example, 5.0 eV or more.
- Examples of the ultraviolet shielding agent having a benzotriazole structure include 2- (2'-hydroxy-5'-methylphenyl) benzotriazole ("TinuvinP” manufactured by BASF), 2- (2'-hydroxy-3', 5'-di-t-butylphenyl) benzotriazole (BASF "Tinuvin320”), 2- (2'-hydroxy-3'-t-butyl-5-methylphenyl) -5-chlorobenzotriazole (BASF) "Tinuvin 326" manufactured by BASF) and 2- (2'-hydroxy-3', 5'-di-amylphenyl) benzotriazole ("Tinuvin 328" manufactured by BASF) and the like.
- TeinuvinP 2- (2'-hydroxy-5'-methylphenyl) benzotriazole
- BASF 2- (2'-hydroxy-3', 5'-di-t-butylphenyl) benzotriazole
- BASF 2- (2'-hydroxy-3', 5'-di-t
- the ultraviolet shielding agent is preferably an ultraviolet shielding agent having a benzotriazole structure containing a halogen atom, and is preferably an ultraviolet shielding agent having a benzotriazole structure containing a chlorine atom, because it is excellent in the ability to shield ultraviolet rays. More preferred.
- Examples of the ultraviolet shielding agent having a benzophenone structure include octabenzone (“Chimassorb81” manufactured by BASF) and the like.
- UV shielding agent having the above triazine structure
- examples of the ultraviolet shielding agent having the above triazine structure include "LA-F70” manufactured by ADEKA and 2- (4,6-diphenyl-1,3,5-triazine-2-yl) -5-[(hexyl).
- Oxygen] -phenol (“Tinuvin1577FF” manufactured by BASF Corporation) and the like can be mentioned.
- Examples of the ultraviolet shielding agent having a malonic acid ester structure include dimethyl 2- (p-methoxybenzylidene) malonate, tetraethyl-2,2- (1,4-phenylenedimethylidene) bismaronate, and 2- (p-methoxybenzylidene).
- -Bis (1,2,2,6,6-pentamethyl4-piperidinyl) malonate and the like can be mentioned.
- Examples of commercially available products of the ultraviolet shielding agent having the above-mentioned malonic acid ester structure include Hostavin B-CAP, Hostavin PR-25, and Hostavin PR-31 (all manufactured by Clariant).
- Examples of the ultraviolet shielding agent having the oxalic acid anilide structure include N- (2-ethylphenyl) -N'-(2-ethoxy-5-t-butylphenyl) oxalic acid diamide and N- (2-ethylphenyl)-.
- a oxalic acid having an aryl group substituted on a nitrogen atom such as N'-(2-ethoxy-phenyl) oxalic acid diamide and 2-ethyl-2'-ethoxy-oxalanilide ("SanduvorVSU" manufactured by Clariant). Examples include diamides.
- ultraviolet shielding agent having the benzoate structure examples include 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate (“Tinuvin 120” manufactured by BASF) and the like. ..
- the content of the ultraviolet shielding agent and the content of the benzotriazole compound in 100% by weight of the interlayer film or 100% by weight of the layer containing the ultraviolet shielding agent (first layer, second layer or third layer). Is preferably 0.1% by weight or more, more preferably 0.2% by weight or more, still more preferably 0.3% by weight or more, and particularly preferably 0.5% by weight or more.
- the content of the ultraviolet shielding agent and the content of the benzotriazole compound in 100% by weight of the interlayer film or 100% by weight of the layer containing the ultraviolet shielding agent (first layer, second layer or third layer). Is preferably 2.5% by weight or less, more preferably 2% by weight or less, still more preferably 1% by weight or less, and particularly preferably 0.8% by weight or less.
- the content of the ultraviolet shielding agent is not less than the above lower limit and not more than the above upper limit, the decrease in the visible light transmittance after the lapse of the period can be further suppressed.
- the content of the ultraviolet shielding agent is 0.2% by weight or more in 100% by weight of the layer containing the ultraviolet shielding agent, the visible light transmittance of the interlayer film and the laminated glass after a period of time is lowered. It can be significantly suppressed.
- the interlayer film preferably contains an antioxidant.
- the first layer preferably contains an antioxidant.
- the second layer preferably contains an antioxidant.
- the third layer preferably contains an antioxidant. Only one kind of the above-mentioned antioxidant may be used, or two or more kinds may be used in combination.
- antioxidants examples include phenolic antioxidants, sulfur-based antioxidants, phosphorus-based antioxidants and the like.
- the above-mentioned phenolic antioxidant is an antioxidant having a phenol skeleton.
- the sulfur-based antioxidant is an antioxidant containing a sulfur atom.
- the phosphorus-based antioxidant is an antioxidant containing a phosphorus atom.
- the above-mentioned antioxidant is preferably a phenol-based antioxidant or a phosphorus-based antioxidant.
- phenolic antioxidant examples include 2,6-di-t-butyl-p-cresol (BHT), butylhydroxyanisole (BHA), 2,6-di-t-butyl-4-ethylphenol, and stearyl-.
- Examples of the phosphorus-based antioxidant include tridecyl phosphite, tris (tridecyl) phosphite, triphenyl phosphite, trinonylphenyl phosphite, bis (tridecyl) pentaerythritol diphosphite, and bis (decyl) pentaerythritol diphos.
- antioxidants examples include BASF's "IRGANOX 245", BASF's “IRGAFOS 168", BASF's “IRGAFOS 38", Sumitomo Chemical's “Smilizer BHT”, and Sakai Chemical's. Examples thereof include “H-BHT” and "IRGANOX 1010" manufactured by BASF.
- a layer (first layer, second layer or third layer) containing 100% by weight of the interlayer film or an antioxidant is used.
- the content of the antioxidant is preferably 0.1% by weight or more in 100% by weight. Further, since the effect of adding the antioxidant is saturated, the content of the antioxidant is preferably 2% by weight or less in 100% by weight of the interlayer film or 100% by weight of the layer containing the antioxidant. ..
- the interlayer film, the first layer, the second layer, and the third layer are each, if necessary, a coupling agent, a dispersant, a surfactant, a flame retardant, an antistatic agent, a pigment, and a dye.
- Adhesive strength modifiers other than metal salts, moisture resistant agents, fluorescent whitening agents, infrared absorbers and other additives may be contained. Only one of these additives may be used, or two or more of these additives may be used in combination.
- the interlayer film may include a functional film for the purpose of expressing a specific function.
- the functional film include a light control film, an infrared reflective film, a colored film, and a film on which a design is printed.
- dimming film examples include a film having an electrochromic layer and an electrolyte layer.
- the electrochromic layer is a layer containing an electrochromic compound (a compound having an electrochromic property).
- having an electrochromic property means having a property that the light transmittance changes by applying a voltage.
- the infrared reflective film examples include a resin film with a metal foil, a multilayer laminated film in which a metal layer and a dielectric layer are formed on the resin film, a multilayer resin film, a liquid crystal film, and the like. These films have the ability to reflect infrared rays.
- the resin film with a metal foil includes a resin film and a metal foil laminated on the outer surface of the resin film.
- the resin film material include polyethylene terephthalate resin, polyethylene naphthalate resin, polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, polyurethane resin, polyvinyl alcohol resin, polyolefin resin, and poly.
- Examples thereof include vinyl chloride resin and polyimide resin.
- the material of the metal foil include aluminum, copper, silver, gold, palladium, and alloys containing these.
- the multilayer laminated film in which the metal layer and the dielectric layer are formed on the resin film is a multilayer laminated film in which the metal layer and the dielectric layer are alternately laminated on the resin film in an arbitrary number of layers.
- the metal layer / dielectric layer / metal layer / dielectric There may be structural parts such as a layer / metal layer / metal layer / dielectric layer / metal layer in which some parts are not alternately laminated.
- Examples of the material of the resin film in the multilayer laminated film include polyethylene, polypropylene, polylactic acid, poly (4-methylpentene-1), vinylidene fluoride, cyclic polyolefin, polymethylmethacrylate, polyvinyl chloride, polyvinyl alcohol, and nylon 6. , 11, 12, 66 and the like, polypropylene, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, polyester, polyphenylene sulfide, polyetherimide and the like.
- Examples of the material of the metal layer in the multilayer laminated film include the same materials as the material of the metal foil in the resin film with metal foil.
- a coating layer of a metal or a mixed oxide of a metal can be applied to both sides or one side of the metal layer.
- the material of the coat layer include ZnO, Al 2 O 3 , Ga 2 O 3 , InO 3 , MgO, Ti, NiCr and Cu.
- examples of the material of the dielectric layer in the multilayer laminated film include indium oxide and the like.
- the multilayer resin film is a laminated film in which a plurality of resin films are laminated.
- Examples of the material of the multilayer resin film include the same materials as the material of the resin film in the multilayer resin film.
- the number of laminated resin films in the multilayer resin film is 2 or more, and may be 3 or more, or 5 or more.
- the number of laminated resin films in the multilayer resin film may be 1000 or less, 100 or less, or 50 or less.
- the multilayer resin film may be a multilayer resin film in which two or more types of thermoplastic resin layers having different optical properties (refractive index) are alternately or randomly laminated in an arbitrary number of layers. Such a multilayer resin film is configured to obtain desired infrared reflection performance.
- liquid crystal film examples include a film in which cholesteric liquid crystal layers that reflect light of an arbitrary wavelength are laminated in an arbitrary number of layers. Such a liquid crystal film is configured to obtain desired infrared reflection performance.
- the infrared reflective film may contain infrared reflective particles.
- the infrared reflective particles are particles having infrared reflective performance, and examples thereof include flat plate particles having a thickness of 1 nm or more and 1000 ⁇ m or less.
- an infrared reflective film having infrared reflection performance can be obtained by adjusting the thickness, surface area, and arrangement state of the silver nanoplate particles.
- the functional film has a property that the infrared transmittance is 40% or less at at least one wavelength in the range of 800 nm to 2000 nm. At least one wavelength in the range of 800 nm to 2000 nm, the infrared transmittance is more preferably 30% or less, still more preferably 20% or less.
- the transmittance of each wavelength in the wavelength range of 800 nm to 2000 nm of the functional film is measured as follows. Prepare a single functional film. Using a spectrophotometer (“U-4100” manufactured by Hitachi High-Tech), the spectral transmittance of each wavelength in the wavelength range of 800 nm to 2000 nm of the functional film is obtained in accordance with JIS R3106: 1998.
- the interlayer film is preferably used to obtain a laminated glass without being treated by an autoclave.
- the interlayer film may be used to obtain a laminated glass by performing an autoclave treatment.
- the thickness of the interlayer film is not particularly limited. From the viewpoint of practical use and from the viewpoint of sufficiently enhancing the penetration resistance and flexural rigidity of the laminated glass, the thickness of the interlayer film is preferably 0.1 mm or more, more preferably 0.25 mm or more, and preferably 3 mm. Below, it is more preferably 1.5 mm or less. When the thickness of the interlayer film is at least the above lower limit, the penetration resistance and flexural rigidity of the laminated glass are further increased. When the thickness of the interlayer film is not more than the above upper limit, the transparency of the interlayer film and the laminated glass becomes even better.
- T be the thickness of the interlayer film.
- the thickness of each of the first layer, the first surface layer and the second surface layer is preferably 0.005 T or more, more preferably 0.01 T or more, still more preferably 0.02 T or more, and is preferable. Is 0.17T or less, more preferably 0.15T or less, more preferably 0.13T or less, more preferably 0.1T or less, still more preferably 0.09T or less.
- the thickness is not less than the above lower limit and not more than the above upper limit, the sound insulation property is further improved over a wide temperature range.
- the interlayer film may be an interlayer film having a uniform thickness or an interlayer film having a variable thickness.
- the cross-sectional shape of the interlayer film may be rectangular or wedge-shaped.
- the interlayer film may be rolled into a roll of the interlayer film.
- the roll body may include a winding core and an interlayer film wound around the outer circumference of the winding core.
- the distance between one end and the other end of the interlayer film is preferably 3 m or less, more preferably 2 m or less, particularly preferably 1.5 m or less, preferably 0.5 m or more, more preferably 0.8 m or more, particularly. It is preferably 1 m or more.
- the distance between one end and the other end is the distance in the length direction of the interlayer film.
- the distance between one end and the other end is the distance between one end and the other end facing each other.
- the method for producing the interlayer film according to the present invention is not particularly limited.
- Examples of the method for producing an interlayer film according to the present invention include a method of extruding a resin composition using an extruder and a method of heat press molding in the case of a single-layer interlayer film.
- a method for producing an interlayer film according to the present invention in the case of a multilayer interlayer film, for example, each layer is formed by using each resin composition for forming each layer, and then the obtained layers are laminated. , And a method of laminating each layer by co-extruding each resin composition for forming each layer using an extruder.
- the same polyvinyl acetal resin is contained in the first surface layer and the second surface layer. It is more preferable that the same polyvinyl acetal resin and the same plasticizer are contained in the first surface layer and the second surface layer because the production efficiency of the interlayer film is excellent. It is more preferable that the first surface layer and the second surface layer are formed of the same resin composition because the intermediate film production efficiency is excellent.
- the interlayer film preferably has an uneven shape on at least one of the surfaces on both sides. It is more preferable that the interlayer film has an uneven shape on both surfaces.
- the method for forming the uneven shape is not particularly limited, and examples thereof include a lip embossing method, an embossing roll method, a calender roll method, and a deformed extrusion method.
- the embossing roll method is preferable because it is possible to form a large number of uneven embossing patterns that are quantitatively constant.
- the laminated glass according to the present invention includes a first laminated glass member, a second laminated glass member, and the above-mentioned interlayer film for laminated glass.
- the above-mentioned interlayer film for laminated glass is arranged between the first laminated glass member and the second laminated glass member.
- FIG. 4 is a cross-sectional view schematically showing an example of a laminated glass using the interlayer film for laminated glass shown in FIG.
- the laminated glass 31 shown in FIG. 4 includes a first laminated glass member 21, a second laminated glass member 22, and an interlayer film 11.
- the interlayer film 11 is arranged between the first laminated glass member 21 and the second laminated glass member 22 and is sandwiched therein.
- the first laminated glass member 21 is laminated on the first surface 11a of the interlayer film 11.
- the second laminated glass member 22 is laminated on the second surface 11b opposite to the first surface 11a of the interlayer film 11.
- the laminated glass according to the present invention includes a first laminated glass member, a second laminated glass member, and an interlayer film
- the interlayer film is an interlayer film for laminated glass according to the present invention.
- the interlayer film is arranged between the first laminated glass member and the second laminated glass member.
- the first laminated glass member is preferably a first glass plate.
- the second laminated glass member is preferably a second glass plate.
- first and second laminated glass members include a glass plate and a PET (polyethylene terephthalate) film.
- the laminated glass includes not only a laminated glass in which an interlayer film is sandwiched between two glass plates, but also a laminated glass in which an interlayer film is sandwiched between a glass plate and a PET film or the like.
- the laminated glass is a laminated body provided with a glass plate, and it is preferable that at least one glass plate is used.
- the first laminated glass member and the second laminated glass member are glass plates or PET films, respectively, and the laminated glass is among the first laminated glass member and the second laminated glass member. It is preferable to provide a glass plate as at least one of them. It is particularly preferable that both the first and second laminated glass members are glass plates.
- the glass plate examples include inorganic glass and organic glass.
- the inorganic glass examples include float plate glass, heat ray absorbing plate glass, heat ray reflecting plate glass, polished plate glass, template glass, wire-reinforced plate glass, and green glass.
- the organic glass is a synthetic resin glass that replaces the inorganic glass.
- examples of the organic glass include a polycarbonate plate and a poly (meth) acrylic resin plate.
- Examples of the poly (meth) acrylic resin plate include a polymethyl (meth) acrylate plate.
- each of the first laminated glass member and the second laminated glass member is preferably 1 mm or more, preferably 5 mm or less, and more preferably 3 mm or less.
- the thickness of the glass plate is preferably 0.5 mm or more, more preferably 0.7 mm or more, preferably 5 mm or less, and more preferably 3 mm or less. ..
- the thickness of the PET film is preferably 0.03 mm or more, preferably 0.5 mm or less.
- the first and second laminated glass members and the interlayer film are adhered to each other. It is preferable to include a step of obtaining a laminated body. In this step, the air remaining between the first laminated glass member, the second laminated glass member, and the interlayer film is passed through a pressing roll or put in a rubber bag and sucked under reduced pressure. It is preferable to degas.
- the temperature at the time of bonding is, for example, 70 ° C to 100 ° C.
- the interlayer film and the laminated glass can be used for automobiles, railroad vehicles, aircraft, ships, buildings, etc.
- the interlayer film and the laminated glass can be used for other purposes.
- the interlayer film and the laminated glass are preferably an interlayer film and a laminated glass for vehicles or buildings, and more preferably an interlayer film and a laminated glass for vehicles.
- the interlayer film and the laminated glass can be used for windshields, side glasses, rear glasses, roof glasses and the like of automobiles.
- the interlayer film and the laminated glass are preferably used for automobiles.
- the interlayer film is used to obtain laminated glass for automobiles.
- n-butyraldehyde having 4 carbon atoms is used for acetalization.
- degree of acetalization degree of butyralization
- degree of acetylation degree of acetylation
- content of hydroxyl groups were measured by a method based on JIS K6728 “Polyvinyl butyral test method”.
- ASTM D1396-92 the same numerical value as the method based on JIS K6728 "Polyvinyl butyral test method” was shown.
- Polyvinyl acetal resin Polyvinyl acetal resin (polyvinyl butyral resin (PVB1), average degree of polymerization 1700, hydroxyl group content 30.4 mol%, acetylation degree 1.0 mol%, acetalization degree (butyralization degree) 68.6 mol%)
- Polyvinyl acetal resin polyvinyl butyral resin (PVB2), average degree of polymerization 850, hydroxyl group content 31.0 mol%, acetylation degree 1.0 mol%, acetalization degree (butyralization degree) 68.0 mol%)
- Polyvinyl acetal resin polyvinyl butyral resin (PVB3), average degree of polymerization 1500, hydroxyl group content 30.8 mol%, acetylation degree 0.5 mol%, acetalization degree (butyralization degree) 68.7 mol%)
- Metal salt M Mg mixture (50:50 (weight ratio) mixture of 2-ethylmagnesium butyrate and magnesium acetate)
- Tinuvin326 (2- (2'-hydroxy-3'-t-butyl-5-methylphenyl) -5-chlorobenzotriazole, BASF's "Tinuvin 326"
- Example 1 Preparation of composition for forming an interlayer film (first layer): The following components were mixed and sufficiently kneaded with a mixing roll to obtain a composition for forming an interlayer film (first layer).
- Polyvinyl butyral resin (PVB1) 37.5 parts by weight Polyvinyl butyral resin (PVB2) 62.5 parts by weight Triethylene glycol di-2-ethylhexanoate (3GO) 30 parts by weight Metal salt M (Mg mixture)
- An amount of UV shielding agent (Tinuvin 326) of 0.2% by weight in the obtained interlayer film.
- interlayer film The composition for forming the interlayer film (first layer) was heat-press molded to prepare a single-layer interlayer film (thickness 0.8 mm) having only the first layer.
- Example 2 to 5 and Comparative Examples 1 to 4 A single-layer interlayer film (thickness 0.8 mm) was prepared in the same manner as in Example 1 except that the type and content of the resin and the content of the plasticizer were changed as shown in Tables 1 and 2. ..
- the peak temperature of the tangent loss was defined as the glass transition temperature Tg (° C.).
- Tg glass transition temperature
- the temperature at which the value of the tangent loss was minimized in the temperature range between Tg (° C.) and 100 ° C. was defined as the softening point.
- the number average molecular weight and the weight average molecular weight of the polyvinyl acetal resin were measured. The measurement was performed under the conditions of a flow velocity of 0.5 ml / ml and a column temperature of 40 ° C. As a standard sample (“Shodex Standard SM-105”), 10 samples having the following weight average molecular weights were used. The sample numbers (weight average molecular weight) are as follows: S-1.3 (1,270), S-3.2 (3,180), S-6.9 (6,940), S-22. (21,800), S-53 (52,500), S-139 (139,000), S-333 (333,000), S-609 (609,000), S-1345 (1,350, 000), S-2704 (2,700,000). The molecular weight was plotted against the elution time indicated by the peak top of each standard sample peak, and the obtained approximate straight line was used as a calibration curve.
- the obtained first layer (intermediate film) was cut out to a diameter of 8 mm to obtain a test sample.
- a compression creep test was performed by the method described above. Since the thickness of the first layer (intermediate film) is 0.8 mm, the obtained test samples correspond to the test samples A, B, and C. Moreover, the thickness of the test sample after the compression creep test was smaller than the thickness of the test sample before the compression creep test.
- an iron ball having a diameter of 82 mm and a weight of 2260 g was dropped from a height of 4 m at a position 150 mm inside from the end of the laminated glass.
- the obtained laminated glass was allowed to stand on a blackout curtain, the edges of the laminated glass were visually observed, and the foaming ratio was evaluated on a scale of 5 from level 1 to 5. No foaming is observed at level 1, and a foaming portion is observed toward level 5.
- FIG. 5 (a) An example of a captured image determined to be level 1 is shown in FIG. 5 (a), an example of a captured image determined to be level 2 is shown in FIG. 5 (b), and an example of a captured image determined to be level 3 is shown. 5 (c), an example of a captured image determined to be level 4 is shown in FIG. 5 (d), and an example of a captured image determined to be level 5 is shown in FIG. 5 (e).
- the obtained laminated glass was allowed to stand on a blackout curtain, the transparency of the laminated glass was visually observed, and the level of transparency was evaluated on a scale of 1 to 5. At level 1, the entire surface is completely transparent, and a less transparent part is observed toward level 5.
- FIG. 6A An example of a photographed image determined to be level 1 is shown in FIG. 6A, an example of a photographed image determined to be level 2 is shown in FIG. 6B, and an example of a photographed image determined to be level 3 is shown. 6 (c), an example of a captured image determined to be level 4 is shown in FIG. 6 (d), and an example of a captured image determined to be level 5 is shown in FIG. 6 (e).
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Abstract
Description
本発明に係る合わせガラス用中間膜(以下、「中間膜」と略記することがある)は、1層の構造又は2層以上の構造を有する。本発明に係る中間膜は、第1の層を備える。本発明に係る中間膜では、上記第1の層を切り出して得られる直径8mm及び厚み0.8mmの試験サンプルAについて、下記の圧縮クリープ試験を行ったときに、圧縮クリープ試験前後での試験サンプルAの厚みの変化量が、50μm以上325μm以下である。
上記中間膜は、熱可塑性樹脂(以下、熱可塑性樹脂(0)と記載することがある)を含むことが好ましい。上記熱可塑性樹脂としては、ポリ酢酸ビニル樹脂、ポリエステル樹脂、ポリビニルアセタール樹脂、酢酸ビニル樹脂、ポリスチレン樹脂、エチレン-酢酸ビニル共重合体樹脂、エチレン-アクリル酸共重合体樹脂、ポリウレタン樹脂、アイオノマー樹脂、ポリビニルアルコール樹脂、脂肪族ポリオレフィン等のポリオレフィン樹脂、及び(メタ)アクリル樹脂((メタ)アクリロイル基を有する重合体)等が挙げられる。なお、ポリオキシメチレン(又はポリアセタール)樹脂は、ポリビニルアセタール樹脂に含まれる。上記熱可塑性樹脂として、これら以外の熱可塑性樹脂を用いてもよい。上記熱可塑性樹脂は、熱可塑性エラストマーであってもよい。
上記中間膜は、可塑剤を含むことが好ましい。上記第1の層(単層の中間膜を含む)は、可塑剤(以下、可塑剤(1)と記載することがある)を含むことが好ましい。上記第2の層は、可塑剤(以下、可塑剤(2)と記載することがある)を含むことが好ましい。上記第3の層は、可塑剤(以下、可塑剤(3)と記載することがある)を含むことが好ましい。可塑剤の使用により、またポリビニルアセタール樹脂と可塑剤との併用により、耐衝撃性及び耐貫通性により一層優れ、ポリビニルアセタール樹脂と可塑剤とを含む層の合わせガラス部材又は他の層に対する接着力が適度に高くなる。上記可塑剤は特に限定されない。上記可塑剤(1)と上記可塑剤(2)と上記可塑剤(3)とは同一であってもよく、異なっていてもよい。上記可塑剤(1)、上記可塑剤(2)及び上記可塑剤(3)はそれぞれ、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、遮熱性物質を含むことが好ましい。上記第1の層(単層の中間膜を含む)は、遮熱性物質を含むことが好ましい。上記第2の層は、遮熱性物質を含むことが好ましい。上記第3の層は、遮熱性物質を含むことが好ましい。上記遮熱性物質は、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、フタロシアニン化合物、ナフタロシアニン化合物及びアントラシアニン化合物の内の少なくとも1種の成分Xを含むことが好ましい。上記第1の層は、上記成分Xを含むことが好ましい。上記第2の層は、上記成分Xを含むことが好ましい。上記第3の層は、上記成分Xを含むことが好ましい。上記成分Xは遮熱性物質である。上記成分Xは、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、遮熱粒子を含むことが好ましい。上記第1の層は、上記遮熱粒子を含むことが好ましい。上記第2の層は、上記遮熱粒子を含むことが好ましい。上記第3の層は、上記遮熱粒子を含むことが好ましい。上記遮熱粒子は遮熱性物質である。遮熱粒子の使用により、赤外線(熱線)を効果的に遮断できる。上記遮熱粒子は、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、アルカリ金属塩、マグネシウム塩以外のアルカリ土類金属塩、及び、マグネシウム塩の内の少なくとも1種の金属塩(以下、金属塩Mと記載することがある)を含むことが好ましい。また、マグネシウムはアルカリ土類金属であるので、上記中間膜は、アルカリ金属塩及びアルカリ土類金属塩の内の少なくとも1種の金属塩Mを含むことが好ましい。上記第1の層は、上記金属塩Mを含むことが好ましい。上記第2の層は、上記金属塩Mを含むことが好ましい。上記第3の層は、上記金属塩Mを含むことが好ましい。なお、アルカリ土類金属とは、Be、Mg、Ca、Sr、Ba、及びRaの6種の金属を意味する。上記金属塩Mの使用により、中間膜とガラス板などの合わせガラス部材との接着性又は中間膜における各層間の接着性を制御することが容易になる。上記金属塩Mは、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、紫外線遮蔽剤を含むことが好ましい。上記第1の層は、紫外線遮蔽剤を含むことが好ましい。上記第2の層は、紫外線遮蔽剤を含むことが好ましい。上記第3の層は、紫外線遮蔽剤を含むことが好ましい。紫外線遮蔽剤の使用により、中間膜及び合わせガラスが長期間使用されても、可視光線透過率がより一層低下し難くなる。上記紫外線遮蔽剤は、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、酸化防止剤を含むことが好ましい。上記第1の層は、酸化防止剤を含むことが好ましい。上記第2の層は、酸化防止剤を含むことが好ましい。上記第3の層は、酸化防止剤を含むことが好ましい。上記酸化防止剤は、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜、上記第1の層、上記第2の層及び上記第3の層はそれぞれ、必要に応じて、カップリング剤、分散剤、界面活性剤、難燃剤、帯電防止剤、顔料、染料、金属塩以外の接着力調整剤、耐湿剤、蛍光増白剤及び赤外線吸収剤等の添加剤を含んでいてもよい。これらの添加剤は、1種のみが用いられてもよく、2種以上が併用されてもよい。
上記中間膜は、特定の機能を発現させる目的で、機能フィルムを備えていてもよい。上記機能フィルムとしては、調光フィルム、赤外線反射フィルム、着色フィルム、及び意匠がプリントされたフィルム等が挙げられる。
上記中間膜は、オートクレーブによる処理を行わずに合わせガラスを得るために好適に用いられる。ただし、上記中間膜は、オートクレーブによる処理を行うことにより、合わせガラスを得るために用いられてもよい。
本発明に係る合わせガラスは、第1の合わせガラス部材と、第2の合わせガラス部材と、上述した合わせガラス用中間膜とを備える。本発明に係る合わせガラスでは、上記第1の合わせガラス部材と上記第2の合わせガラス部材との間に、上述した合わせガラス用中間膜が配置されている。
ポリビニルアセタール樹脂(ポリビニルブチラール樹脂(PVB1)、平均重合度1700、水酸基の含有率30.4モル%、アセチル化度1.0モル%、アセタール化度(ブチラール化度)68.6モル%)
ポリビニルアセタール樹脂(ポリビニルブチラール樹脂(PVB2)、平均重合度850、水酸基の含有率31.0モル%、アセチル化度1.0モル%、アセタール化度(ブチラール化度)68.0モル%)
ポリビニルアセタール樹脂(ポリビニルブチラール樹脂(PVB3)、平均重合度1500、水酸基の含有率30.8モル%、アセチル化度0.5モル%、アセタール化度(ブチラール化度)68.7モル%)
トリエチレングリコールジ-2-エチルヘキサノエート(3GO)
Mg混合物(2-エチル酪酸マグネシウムと酢酸マグネシウムとの50:50(重量比)混合物)
Tinuvin326(2-(2’-ヒドロキシ-3’-t-ブチル-5-メチルフェニル)-5-クロロベンゾトリアゾール、BASF社製「Tinuvin326」)
BHT(2,6-ジ-t-ブチル-p-クレゾール)
中間膜(第1の層)を形成するための組成物の作製:
以下の成分を配合し、ミキシングロールで充分に混練し、中間膜(第1の層)を形成するための組成物を得た。
ポリビニルブチラール樹脂(PVB2)62.5重量部
トリエチレングリコールジ-2-エチルヘキサノエート(3GO)30重量部
得られる中間膜中で70ppmとなる量の金属塩M(Mg混合物)
得られる中間膜中で0.2重量%となる量の紫外線遮蔽剤(Tinuvin326)
得られる中間膜中で0.2重量%となる量の酸化防止剤(BHT)
中間膜(第1の層)を形成するための組成物を、加熱プレス成形することにより、第1の層のみを備える単層の中間膜(厚み0.8mm)を作製した。
樹脂の種類及び含有量、並びに可塑剤の含有量を表1,2に示すように変更したこと以外は、実施例1と同様にして、単層の中間膜(厚み0.8mm)を作製した。
(1)第1の層のガラス転移温度及び軟化点
得られた第1の層を、室温23±2℃、湿度25±5%の環境下に12時間保管した。次いで、TAインスツルメント社製の粘弾性測定装置「ARES-G2」を用いて、粘弾性を測定した。治具として直径8mmのパラレルプレートを用い、せん断モード、3℃/分の降温速度で100℃から-20℃まで温度を低下させる条件、並びに周波数1Hz及び歪1%の条件で測定した。得られた測定結果において、損失正接のピーク温度をガラス転移温度Tg(℃)とした。Tg(℃)と100℃との間の温度領域において損失正接の値が極小となる温度を軟化点とした。
得られた第1の層をN-メチルピロリドンに溶解させ、0.2重量%の溶液を調製し、該溶液を0.45μmのフィルターで濾過した。このN-メチルピロリドンは臭化リチウムを10mmol/mlの濃度で溶解させたサンプルを用いた。次いで、ゲル浸透クロマトグラフィー装置(「Shodex GPC-101」、検出器:RI-71S、オートサンプラー:AS101、ガードカラム:KF-G、カラム:LF-804の2本直列)を用いてポリスチレン換算のポリビニルアセタール樹脂の数平均分子量および重量平均分子量を測定した。測定は流速0.5ml/ml、カラム温度は40℃の条件下で行った。なお、標準試料(「Shodex Standard SM-105」)として、以下の重量平均分子量の10試料を用いた。サンプルNo(重量平均分子量)は以下の通りである:S-1.3(1,270)、S-3.2(3,180)、S-6.9(6,940)、S-22(21,800)、S-53(52,500)、S-139(139,000)、S-333(333,000)、S-609(609,000)、S-1345(1,350,000)、S-2704(2,700,000)。それぞれの標準試料ピークのピークトップが示す溶出時間に対して分子量をプロットし、得られる近似直線を検量線として用いた。
得られた第1の層(中間膜)を、直径8mmに切り出して、試験サンプルを得た。得られた試験サンプルを用いて、上述した方法により、圧縮クリープ試験を行った。なお、第1の層(中間膜)の厚みは0.8mmであるため、得られた試験サンプルは、試験サンプルA,B,Cに該当する。また、圧縮クリープ試験後の試験サンプルの厚みは、圧縮クリープ試験前の試験サンプルの厚みよりも小さかった。
縦30cm×横30cm×厚み2.5mmの2枚のガラス板(クリアフロートガラス)を用意した。この2つのガラス板の間に、得られた中間膜を挟み込み、積層体を得た。得られた積層体をゴムバック内に入れ、2660Pa(20torr)の真空度で20分間脱気した。次いで、脱気したままで積層体を、4℃/分の昇温速度で90℃まで加熱し、90℃で5分間保持した後、30℃まで降温した。次いで、常圧に戻した。このようにして、合わせガラスを得た。
合格:落球試験後に鉄球が合わせガラスの上で保持された状態で保たれる
不合格:落球試験後に鉄球が合わせガラスを貫通し落下する
縦10cm×横10cm×厚み2.5mmの2枚のガラス板(クリアフロートガラス)を用意した。この2つのガラス板の間に、得られた中間膜を挟み込み、積層体を得た。得られた積層体をゴムバック内に入れ、2660Pa(20torr)の真空度で20分間脱気した。次いで、脱気したままで積層体を、4℃/分の昇温速度で90℃まで加熱し、90℃で5分間保持した後、30℃まで降温した。次いで、常圧に戻した。このようにして、合わせガラスを得た。
縦30cm×横30cm×厚み2.5mmの2枚のガラス板(クリアフロートガラス)を用意した。この2つのガラス板の間に、得られた中間膜を挟み込み、積層体を得た。得られた積層体をゴムバック内に入れ、2660Pa(20torr)の真空度で20分間脱気した。次いで、脱気したままで積層体を、6℃/分の昇温速度で95℃まで加熱し、95℃で20分間保持した後、30℃まで降温した。次いで、常圧に戻した。このようにして、合わせガラスを得た。
2,2B…第2の表面層
3…中間層
3B…第1の中間層
4B…第2の中間層
5B…第3の中間層
1a,1Ba,2a,2Ba…第1の表面
11,11B…中間膜
11A…中間膜(第1の層)
11a…第1の表面
11b…第2の表面
21…第1の合わせガラス部材
22…第2の合わせガラス部材
31…合わせガラス
Claims (8)
- 1層の構造又は2層以上の構造を有する合わせガラス用中間膜であり、
第1の層を備え、
前記第1の層を切り出して得られる直径8mm及び厚み0.8mmの試験サンプルAについて、下記の圧縮クリープ試験を行ったときに、圧縮クリープ試験前後での試験サンプルAの厚みの変化量が、50μm以上325μm以下である、合わせガラス用中間膜。
圧縮クリープ試験:試験サンプルAに410gの荷重を加えた状態で、30℃から90℃まで6℃/分で昇温し、90℃で5分間保持する。圧縮クリープ試験を開始する前に30℃で5分間保持した直後の30℃での試験サンプルAの厚みと、圧縮クリープ試験終了時の90℃で5分間保持した直後の試験サンプルAの厚みとの差の絶対値を、圧縮クリープ試験前後での試験サンプルAの厚みの変化量とする。 - 1層の構造又は2層以上の構造を有する合わせガラス用中間膜であり、
厚みが200μm以上900μm以下である第1の層を備え、
前記第1の層の厚みをTBμmとし、前記第1の層を切り出して得られる直径8mm及び厚みTBμmの試験サンプルBについて、下記の圧縮クリープ試験を行ったときに、圧縮クリープ試験前後での試験サンプルBの厚みの変化量が、50μm以上325μm以下である、合わせガラス用中間膜。
圧縮クリープ試験:試験サンプルBに410gの荷重を加えた状態で、30℃から90℃まで6℃/分で昇温し、90℃で5分間保持する。圧縮クリープ試験を開始する前に30℃で30分間保持した直後の30℃での試験サンプルBの厚みと、圧縮クリープ試験終了時の90℃で5分間保持した直後の試験サンプルBの厚みとの差の絶対値を、圧縮クリープ試験前後での試験サンプルBの厚みの変化量とする。 - 1層の構造又は2層以上の構造を有する合わせガラス用中間膜であり、
第1の層を備え、
中間膜の厚みが80μm以上1600μm以下であり、
中間膜の厚みをTCμmとし、中間膜を切り出して得られる直径8mm及び厚みTCμmの試験サンプルCについて、下記の圧縮クリープ試験を行ったときに、圧縮クリープ試験前後での試験サンプルCの厚みの変化量が、50μm以上325μm以下である、合わせガラス用中間膜。
圧縮クリープ試験:試験サンプルCに410gの荷重を加えた状態で、30℃から90℃まで6℃/分で昇温し、90℃で5分間保持する。圧縮クリープ試験開始時の30℃での試験サンプルCの厚みと、圧縮クリープ試験終了時の90℃で5分間保持した直後の試験サンプルCの厚みとの差の絶対値を、圧縮クリープ試験前後での試験サンプルCの厚みの変化量とする。 - 前記第1の層が、熱可塑性樹脂と、可塑剤とを含む、請求項1~3のいずれか1項に記載の合わせガラス用中間膜。
- 前記第1の層に含まれる前記熱可塑性樹脂が、ポリビニルアセタール樹脂である、請求項4に記載の合わせガラス用中間膜。
- 2層以上の構造を有し、
第2の層をさらに備え、
前記第1の層の第1の表面側に、前記第2の層が配置されている、請求項1~5のいずれか1項に記載の合わせガラス用中間膜。 - 前記第1の層が、中間膜における表面層である、請求項1~6のいずれか1項に記載の合わせガラス用中間膜。
- 第1の合わせガラス部材と、
第2の合わせガラス部材と、
請求項1~7のいずれか1項に記載の合わせガラス用中間膜とを備え、
前記第1の合わせガラス部材と前記第2の合わせガラス部材との間に、前記合わせガラス用中間膜が配置されている、合わせガラス。
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MX2022006259A MX2022006259A (es) | 2019-12-09 | 2020-12-03 | Pelicula de capa intermedia para vidrio laminado y vidrio laminado. |
KR1020227012585A KR20220110725A (ko) | 2019-12-09 | 2020-12-03 | 접합 유리용 중간막 및 접합 유리 |
BR112022009412A BR112022009412A2 (pt) | 2019-12-09 | 2020-12-03 | Filme de intercamada de vidro laminado e vidro laminado |
JP2020570993A JPWO2021117596A1 (ja) | 2019-12-09 | 2020-12-03 | |
CN202080085456.6A CN114787098A (zh) | 2019-12-09 | 2020-12-03 | 夹层玻璃用中间膜和夹层玻璃 |
US17/778,954 US20230011574A1 (en) | 2019-12-09 | 2020-12-03 | Laminated glass interlayer film and laminated glass |
EP20900108.0A EP4074669A4 (en) | 2019-12-09 | 2020-12-03 | LAMINATED GLASS MIDDLE LAYER FILM AND LAMINATED GLASS |
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WO2024122512A1 (ja) * | 2022-12-05 | 2024-06-13 | 積水化学工業株式会社 | 合わせガラス、及びその製造方法 |
WO2024122511A1 (ja) * | 2022-12-05 | 2024-06-13 | 積水化学工業株式会社 | 熱可塑性樹脂膜、積層体及び光学積層体 |
WO2024122514A1 (ja) * | 2022-12-05 | 2024-06-13 | 積水化学工業株式会社 | 熱可塑性樹脂膜、積層体及び光学積層体 |
WO2024122517A1 (ja) * | 2022-12-05 | 2024-06-13 | 積水化学工業株式会社 | 機能性積層体、及び合わせガラス |
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EP4074669A1 (en) | 2022-10-19 |
JPWO2021117596A1 (ja) | 2021-06-17 |
ZA202206267B (en) | 2023-11-29 |
TW202126481A (zh) | 2021-07-16 |
KR20220110725A (ko) | 2022-08-09 |
MX2022006259A (es) | 2022-06-08 |
CN114787098A (zh) | 2022-07-22 |
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