WO2018181747A1 - Film intermédiaire pour verre feuilleté, et verre feuilleté - Google Patents

Film intermédiaire pour verre feuilleté, et verre feuilleté Download PDF

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Publication number
WO2018181747A1
WO2018181747A1 PCT/JP2018/013324 JP2018013324W WO2018181747A1 WO 2018181747 A1 WO2018181747 A1 WO 2018181747A1 JP 2018013324 W JP2018013324 W JP 2018013324W WO 2018181747 A1 WO2018181747 A1 WO 2018181747A1
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Prior art keywords
laminated glass
layer
resin
interlayer film
weight
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PCT/JP2018/013324
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English (en)
Japanese (ja)
Inventor
郁 進藤
裕司 大東
陽介 千葉
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積水化学工業株式会社
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Priority to JP2018519993A priority Critical patent/JPWO2018181747A1/ja
Publication of WO2018181747A1 publication Critical patent/WO2018181747A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10678—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 comprising UV absorbers or stabilizers, e.g. antioxidants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10743—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 acrylate (co)polymers or salts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols

Definitions

  • the present invention relates to an interlayer film for laminated glass used for obtaining laminated glass. Moreover, this invention relates to the laminated glass using the said intermediate film for laminated glasses.
  • Laminated glass is superior in safety even if it is damaged by an external impact and the amount of glass fragments scattered is small. For this reason, the said laminated glass is widely used for a motor vehicle, a rail vehicle, an aircraft, a ship, a building, etc.
  • the laminated glass is manufactured by sandwiching an interlayer film for laminated glass between two glass plates.
  • Patent Document 1 As an example of the interlayer film for laminated glass, Patent Document 1 listed below discloses that 100 parts by weight of a polyvinyl acetal resin having a degree of acetalization of 60 to 85 mol% and at least one of alkali metal salts and alkaline earth metal salts. A sound insulating layer containing 0.001 to 1.0 parts by weight of a metal salt of the above and a plasticizer exceeding 30 parts by weight is disclosed. This sound insulation layer may be a single layer and used as an intermediate film.
  • Patent Document 1 also describes a multilayer intermediate film in which the sound insulation layer and other layers are laminated.
  • the other layer laminated on the sound insulation layer is composed of 100 parts by weight of a polyvinyl acetal resin having an acetalization degree of 60 to 85 mol%, and at least one metal salt of at least one of an alkali metal salt and an alkaline earth metal salt. 1.0 part by weight and a plasticizer that is 30 parts by weight or less are included.
  • Patent Document 2 discloses an intermediate film which is a polymer layer having a glass transition temperature of 33 ° C. or higher. Patent Document 2 describes that the polymer layer is disposed between glass plates having a thickness of 4.0 mm or less.
  • the bending rigidity may be low. For this reason, for example, when laminated glass is used as a window glass for a side door of an automobile, there is no frame for fixing the laminated glass, and due to bending due to the low rigidity of the laminated glass, May interfere with opening and closing.
  • the laminated glass can be reduced in weight if the bending rigidity of the laminated glass can be increased due to the intermediate film.
  • the laminated glass is lightweight, the amount of material used for the laminated glass can be reduced, and the environmental load can be reduced.
  • fuel efficiency can be improved, and as a result, environmental load can be reduced.
  • the laminated glass used in automobiles and the like may be quite hot at about 70 ° C. If the glass plate is thin, the rigidity of the interlayer film is greatly affected, and the bending rigidity of the laminated glass at high temperatures tends to be low. In the conventional interlayer film, it is difficult to sufficiently increase the bending rigidity of the laminated glass at a high temperature of about 70 ° C.
  • the intermediate film is made relatively hard in order to increase the bending rigidity at high temperatures, the bonding property during the production of the laminated glass is lowered. For example, a portion where the intermediate film and the glass plate are not bonded easily occurs. As a result, in the laminated glass, bubbles remain or partial peeling occurs.
  • the laminated glass using the interlayer film is desired to have high sound insulation properties in addition to high bonding property and bending rigidity.
  • an interlayer film for laminated glass having a structure of one layer or two or more layers, including a polyvinyl acetal resin and a second resin other than the polyvinyl acetal resin, is included in the interlayer film.
  • the glass transition temperature Tg of the component derived from the polyvinyl acetal resin is 80 ° C. or higher
  • the shear storage modulus G ′ at 70 ° C. is 5 MPa or more and 500 MPa or less
  • An interlayer film for laminated glass (hereinafter sometimes referred to as an interlayer film) having a ratio B / A with respect to a value A more required of 3 or more is provided.
  • the intermediate film includes a first layer including both the polyvinyl acetal resin and the second resin.
  • the glass transition temperature of the second resin is ⁇ 20 ° C. or higher and 0 ° C. or lower.
  • the content of the second resin is 20% by weight or more in a total of 100% by weight of the polyvinyl acetal resin and the second resin.
  • the gel fraction obtained by the following formula (X) is 10% by weight or more.
  • the shear storage elastic modulus G ′ at 70 ° C. is 10 MPa or more and 500 MPa or less.
  • the polyvinyl acetal resin contained in the interlayer film is a polyvinyl acetoacetal resin, a polyvinyl butyral resin, a polyvinyl benzyl acetal resin, or a polyvinyl cumin acetal resin.
  • the glass transition temperature of the component derived from the polyvinyl acetal resin contained in the interlayer film is 80 ° C. or higher and 120 ° C. or lower.
  • the interlayer film includes a plasticizer.
  • the thickness is 3 mm or less.
  • an intermediate film uses the 1st glass plate which is 1.6 mm or less in thickness, Between the said 1st glass plate and a 2nd glass plate. Arranged and used to obtain laminated glass.
  • an intermediate film is arrange
  • the total of the thickness of the plate and the thickness of the second glass plate is 3.5 mm or less.
  • the first laminated glass member, the second laminated glass member, and the interlayer film for laminated glass described above are provided, and the first laminated glass member and the second laminated glass are provided.
  • the first laminated glass member is a first glass plate, and the thickness of the first glass plate is 1.6 mm or less.
  • a said 1st laminated glass member is a 1st glass plate
  • a said 2nd laminated glass member is a 2nd glass plate
  • the said 1st glass The total of the thickness of the plate and the thickness of the second glass plate is 3.5 mm or less.
  • the interlayer film for laminated glass according to the present invention is an interlayer film for laminated glass having a structure of one layer or two or more layers.
  • the interlayer film for laminated glass according to the present invention includes a polyvinyl acetal resin and a second resin other than the polyvinyl acetal resin.
  • the glass transition temperature of the component derived from the said polyvinyl acetal resin contained in the intermediate film for laminated glasses which concerns on this invention is 80 degreeC or more.
  • the shear storage elastic modulus G ′ at 70 ° C. is 5 MPa or more and 500 MPa or less.
  • the value B obtained from the formula: (log (G ′ (Tg ⁇ 5 ° C.)) ⁇ Log (G ′ (Tg))) / 5 is expressed by the formula: (log (G The ratio B / A to the value A obtained from '(Tg-20 ° C))-log (G' (Tg-10 ° C))) / 10 is 3 or more. Since the interlayer film for laminated glass according to the present invention has the above-described configuration, it is possible to improve the laminating property when producing the laminated glass using the interlayer film for laminated glass according to the present invention. The bending rigidity at a high temperature can be increased, and the sound insulation of the laminated glass can be improved.
  • 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 the second embodiment of the present invention.
  • FIG. 3 is a cross-sectional view schematically showing an example of a laminated glass using the laminated glass interlayer film shown in FIG.
  • FIG. 4 is a cross-sectional view schematically showing an example of a laminated glass using the laminated glass interlayer film shown in FIG.
  • FIG. 5 is a schematic diagram for explaining a method for measuring bending stiffness.
  • FIG. 6 is a graph showing the relationship between G ′ and temperature in Example 11 and Comparative Example 4.
  • the interlayer film for laminated glass according to the present invention (hereinafter sometimes referred to as an interlayer film) has a structure of one layer or a structure of two or more layers.
  • the intermediate film according to the present invention may have a single-layer structure or a two-layer structure.
  • the intermediate film according to the present invention may have a two-layer structure, may have a structure of two or more layers, may have a structure of three layers, or may have a structure of three or more layers. You may have.
  • the intermediate film according to the present invention includes a first layer.
  • the intermediate film according to the present invention may be a single-layer intermediate film including only the first layer, or may be a multilayer intermediate film including the first layer and another layer.
  • the intermediate film according to the present invention includes a polyvinyl acetal resin and a second resin other than the polyvinyl acetal resin.
  • a resin other than the polyvinyl acetal resin is referred to as a second resin in distinction from the polyvinyl acetal resin.
  • the glass transition temperature Tg of the component derived from the polyvinyl acetal resin contained in the interlayer film according to the present invention is 80 ° C. or higher.
  • the shear storage elastic modulus G ′ (70 ° C.) at 70 ° C. of the interlayer film according to the present invention is 5 MPa or more and 500 MPa or less.
  • the value B obtained from the formula: (log (G ′ (Tg ⁇ 5 ° C.)) ⁇ Log (G ′ (Tg))) / 5 is expressed by the formula: (log (G ′ (Tg The ratio B / A to the value A obtained from ⁇ 20 ° C.)-Log (G ′ (Tg ⁇ 10 ° C.)) / 10 is 3 or more.
  • the intermediate film according to the present invention has the above-described configuration, it is possible to improve the bonding property when the laminated glass according to the present invention is manufactured.
  • the interlayer film and the laminated glass member are easily bonded.
  • air bubbles hardly remain and partial peeling hardly occurs.
  • the intermediate film according to the present invention has the above-described configuration, the bending rigidity at high temperature of the laminated glass using the intermediate film according to the present invention can be increased.
  • the bending rigidity at 70 ° C. can be increased.
  • the bending rigidity in 40 degreeC and 60 degreeC can be improved.
  • the bending rigidity of the interlayer film at 20 ° C. can also be increased.
  • an intermediate film is often disposed between the first glass plate and the second glass plate. Even if the thickness of the first glass plate is thin, the bending rigidity of the laminated glass can be sufficiently increased by using the interlayer film according to the present invention.
  • the bending rigidity of the laminated glass can be sufficiently increased by using the interlayer film according to the present invention.
  • the thickness of both the 1st glass plate and the 2nd glass plate is thick, the bending rigidity of a laminated glass will become still higher.
  • bending rigidity can be improved over a wide temperature range (for example, 20 degreeC, 40 degreeC, 60 degreeC, and 70 degreeC).
  • the intermediate film according to the present invention has the above-described configuration, the sound insulation of the laminated glass using the intermediate film according to the present invention can be improved.
  • the intermediate film contains a polyvinyl acetal resin and a second resin other than the polyvinyl acetal resin, the sound insulation is effectively enhanced.
  • the glass transition temperature Tg (hereinafter sometimes referred to as Tg) of the component derived from the polyvinyl acetal resin is 80 ° C. or higher, the bending rigidity at high temperature becomes good. From the viewpoint of further improving the bending rigidity at high temperature, the Tg is preferably 85 ° C. or higher. From the viewpoint of further improving the bending rigidity at high temperature, the glass transition temperature of the polyvinyl acetal resin is preferably 120 ° C. or lower, more preferably 110 ° C. or lower. In the case where the interlayer film includes a plurality of polyvinyl acetal resins, it is preferable that the glass transition temperature having the highest glass transition temperature among the components derived from the polyvinyl acetal resin satisfies the above temperature.
  • the glass transition temperature Tg of the component derived from the said polyvinyl acetal resin is the glass transition of the polyvinyl acetal resin composition containing a polyvinyl acetal resin and an additive. It means temperature.
  • the glass transition temperature of the component derived from the second resin is preferably ⁇ 25 ° C. or higher, more preferably ⁇ 20 ° C. or higher. From the viewpoint of further improving sound insulation, the glass transition temperature of the component derived from the second resin is preferably 0 ° C. or lower, more preferably ⁇ 1 ° C. or lower.
  • the glass transition temperature Tg of the component derived from the said 2nd resin is 2nd resin composition containing 2nd resin and an additive. Of the glass transition temperature.
  • a viscoelasticity measuring device “DVA” manufactured by IT Measurement Control Co., Ltd. was used immediately after the intermediate film was stored for 12 hours in an environment of room temperature 23 ⁇ 2 ° C. and humidity 25 ⁇ 5%.
  • DVA viscoelasticity measuring device manufactured by IT Measurement Control Co., Ltd.
  • -200 "to measure viscoelasticity.
  • the interlayer film was cut out at a length of 8 mm and a width of 5 mm, and the temperature was increased from ⁇ 50 ° C. to 150 ° C. at a rate of temperature increase of 3 ° C./min in the shear mode, and the frequency was 1 Hz and the strain was 0.08%. It is preferable to measure the glass transition temperature.
  • the shear storage modulus G ′ (70 ° C.) at 70 ° C. of the interlayer film is 5 MPa or more and 500 MPa or less, the bending rigidity is improved. From the viewpoint of making the bending rigidity even better, the intermediate film has a shear storage elastic modulus at 70 ° C. of preferably 10 MPa or more. From the viewpoint of further improving the handling property, the shear storage elastic modulus of the interlayer film at 70 ° C. is preferably 300 MPa or less.
  • the said shear storage elastic modulus means a shear storage equivalent elastic modulus.
  • the shear storage equivalent elastic modulus indicates the shear storage elastic modulus when the multilayer body is regarded as a single layer. In the case of not slipping between layers, for example, the shear storage equivalent elastic modulus is measured by measuring the shear storage elastic modulus by a general dynamic viscoelasticity measurement method with the layer structure constituting the intermediate film. Can do.
  • the shear storage elastic modulus and the shear storage equivalent elastic modulus are obtained as follows.
  • G′i in the above formula (A) represents the shear storage elastic modulus of the i-th layer in the interlayer film
  • ai represents the thickness of the i-th layer in the interlayer film.
  • ⁇ i means calculating the sum of numerical values of the i layer.
  • the value B calculated from the formula: (log (G ′ (Tg ⁇ 5 ° C.)) ⁇ Log (G ′ (Tg))) / 5 is expressed by the formula: (log (G ′ (Tg ⁇ 20 ° C.)). )) ⁇ Log (G ′ (Tg ⁇ 10 ° C.))) / 10 because the ratio B / A to the value A is 3 or more, the bending rigidity and bonding properties at high temperature are improved.
  • the ratio B / A is preferably 3.5 or more from the viewpoint of further improving the bending rigidity and bonding property at high temperatures.
  • the ratio B / A may be 30 or less.
  • the glass transition temperature Tg of the component derived from the said 2nd resin is 2nd resin containing 2nd resin and an additive It means the glass transition temperature of the composition.
  • the value A means the amount of change in G 'from Tg-20 ° C to Tg-10 ° C
  • the value B means the amount of change in G' from Tg-5 ° C to Tg.
  • the value of the ratio B / A increases as the value A decreases or the value B increases.
  • the glass transition temperature Tg of the component derived from the said 2nd resin is 2nd resin containing 2nd resin and an additive It means the glass transition temperature of the composition.
  • the viscoelasticity measuring device manufactured by IT Measurement Control Co., Ltd. was immediately after the intermediate film was stored for 12 hours in an environment of room temperature 23 ⁇ 2 ° C. and humidity 25 ⁇ 5%.
  • a method of measuring viscoelasticity using “DVA-200” can be mentioned. Measured under conditions of increasing the temperature from -50 ° C to 150 ° C at a heating rate of 3 ° C / min in shear mode, and at a frequency of 1 Hz and strain of 0.08%. It is preferable to do.
  • the gel fraction obtained by the following formula (X) in the interlayer film is preferably 10% by weight or more.
  • the gel fraction obtained by the following formula (X) in the intermediate film is preferably 10% by weight or more, and preferably 80% by weight or less.
  • the improvement effect of bending rigidity and penetration resistance becomes high.
  • the gel fraction is 80% by weight or less, the penetration resistance is considerably increased.
  • the gel fraction is more preferably 30% by weight or more.
  • the gel fraction is more preferably 50% by weight or less.
  • the intermediate film preferably includes a first layer including both the polyvinyl acetal resin and a second resin other than the polyvinyl acetal resin.
  • the intermediate film preferably has a phase separation structure.
  • One of the factors that achieve these effects is considered to be that energy distribution proceeds smoothly by the phase separation structure.
  • the phase separation structure is preferably a co-continuous structure or a sea-island structure.
  • the phase separation structure may be a co-continuous structure or a sea-island structure.
  • the polyvinyl acetal resin and the second resin are preferably contained in different phases.
  • the polyvinyl acetal resin may be a sea part, and the second resin may be an island part, the second resin may be a sea part, and the polyvinyl acetal resin may be an island part. May be.
  • the polyvinyl acetal resin may be continuous (may have a continuous structure), or the second resin may be continuous (may have a continuous structure).
  • the polyvinyl acetal resin and the second resin may form a co-continuous structure.
  • the polyvinyl acetal resin may be present in a network form, and the second resin may be present in a network form.
  • the polyvinyl acetal resin and the second resin preferably have a sea-island structure or a bicontinuous structure. That is, in the phase separation structure, it is preferable that the polyvinyl acetal resin and the second resin form a sea-island structure or a bicontinuous structure.
  • the average diameter of the islands is preferably 10 nm or more, more preferably 15 nm or more, still more preferably 20 nm or more, particularly preferably 30 nm or more, preferably 13 ⁇ m or less, more preferably 10 ⁇ m or less, still more preferably. Is 2 ⁇ m or less, particularly preferably 1 ⁇ m or less.
  • the diameter of one island part indicates the maximum diameter, and the average of the island parts is obtained by averaging the diameters (maximum diameters) of a plurality of islands.
  • the intermediate film may have a structure of two or more layers, and may include a second layer in addition to the first layer.
  • the intermediate film preferably further includes a second layer.
  • the second layer is disposed on the first surface side of the first layer.
  • the intermediate 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 intermediate film preferably further includes a third layer.
  • the third layer is disposed on the second surface side of the first layer opposite to the first surface.
  • the surface of the second layer opposite to the first layer side is preferably a surface on which a laminated glass member or a glass plate is laminated.
  • stacked on the said 2nd layer becomes like this.
  • it is 1.6 mm or less, More preferably, it is 1.3 mm or less.
  • the second surface opposite to the first surface of the first layer may be a surface on which a laminated glass member or a glass plate is laminated.
  • stacked on the said 1st layer becomes like this.
  • the surface of the third layer opposite to the first layer side is preferably a surface on which a laminated glass member or a glass plate is laminated.
  • the thickness of the glass plate laminated on the third layer is preferably 1.6 mm or less, more preferably 1.3 mm or less.
  • the intermediate film is disposed between the first glass plate and the second glass plate and is preferably used for obtaining laminated glass. Since the bending rigidity can be sufficiently increased due to the intermediate film, the total thickness of the first glass plate and the second glass plate is preferably 3.5 mm or less, more preferably 3 mm. It is as follows.
  • the said intermediate film is arrange
  • the intermediate film includes a first glass plate having a thickness of 1.6 mm or less (preferably 1.3 mm or less) and a second glass plate having a thickness of 1.6 mm or less (preferably 1.3 mm or less). It is used between the first glass plate and the second glass plate and is more preferably used to obtain laminated glass. Also in this case, the bending rigidity can be sufficiently increased due to the intermediate film.
  • 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 intermediate film 11 shown in FIG. 1 is a multilayer intermediate film having a structure of two or more layers.
  • the intermediate film 11 is used to obtain a laminated glass.
  • the intermediate film 11 is an intermediate film for laminated glass.
  • the intermediate film 11 includes a first layer 1, a second layer 2, and a third layer 3.
  • On the first surface 1a of the first layer 1, the second layer 2 is disposed and laminated.
  • the third layer 3 is disposed on the second surface 1b opposite to the first surface 1a of the first layer 1 and laminated.
  • the first layer 1 is an intermediate layer.
  • Each of the second layer 2 and the third layer 3 is a protective layer, and is a surface layer in the present embodiment.
  • the first layer 1 is arranged between the second layer 2 and the third layer 3 and is sandwiched between them. Therefore, the intermediate film 11 has a multilayer structure (second layer 2 / first layer 1 / third layer) in which the second layer 2, the first layer 1, and the third layer 3 are laminated in this order. Having layer
  • layers may be disposed between the second layer 2 and the first layer 1 and between the first layer 1 and the third layer 3, respectively.
  • the second layer 2 and the first layer 1 and the first layer 1 and the third layer 3 are preferably laminated directly.
  • examples of other layers include layers containing polyethylene terephthalate and the like.
  • FIG. 2 is a cross-sectional view schematically showing an interlayer film for laminated glass according to the second embodiment of the present invention.
  • the intermediate film 11A shown in FIG. 2 is a single-layer intermediate film having a single-layer structure.
  • the intermediate film 11A is a first layer.
  • the intermediate film 11A is used to obtain a laminated glass.
  • the intermediate film 11A is an intermediate film for laminated glass.
  • the details of the first layer, the second layer, and the third layer constituting the intermediate film according to the present invention, and the first layer, the second layer, and the third layer are as follows. The detail of each component contained is demonstrated.
  • the intermediate film includes a polyvinyl acetal resin and a second resin other than the polyvinyl acetal resin.
  • Each of the first layer, the second layer, and the third layer preferably includes a polyvinyl acetal resin.
  • Each of the first layer, the second layer, and the third layer preferably contains a second resin other than the polyvinyl acetal resin.
  • the said polyvinyl acetal resin only 1 type may be used and 2 or more types may be used together.
  • As for said 2nd resin only 1 type may be used and 2 or more types may be used together.
  • the content of the polyvinyl acetal resin is preferably 20% by weight or more, more preferably 25% by weight or more, and further preferably 30% by weight or more. Especially preferably, it is 35 weight% or more, Preferably it is less than 100 weight%.
  • the content of the polyvinyl acetal resin may be 90% by weight or less, 80% by weight or less, and 75% by weight. Or less than 70% by weight or 65% by weight or less.
  • the polyvinyl acetal resin is a polyvinyl acetoacetal resin, a polyvinyl butyral resin, a polyvinyl benzyl acetal resin, or a polyvinyl cumin acetal.
  • a resin is preferred.
  • the polyvinyl acetal resin is preferably a polyvinyl acetoacetal resin, a polyvinyl benzyl acetal resin, or a polyvinyl cumin acetal resin.
  • the polyvinyl acetal resin is preferably a polyvinyl benzyl acetal resin or a polyvinyl cumin acetal resin.
  • polyvinyl acetal resins include acetoacetalized resins, benzyl acetalized resins, and cumin acetalized resins.
  • the intermediate film contains a second resin other than the polyvinyl acetal resin.
  • each of the first layer, the second layer, and the third layer preferably contains a second resin other than the polyvinyl acetal resin.
  • the second resin include thermosetting resins and thermoplastic resins.
  • the intermediate film preferably contains a thermoplastic resin (second thermoplastic resin other than polyvinyl acetal resin) as the second resin.
  • a thermoplastic resin other than the polyvinyl acetal resin may be referred to as a second thermoplastic resin, as distinguished from the polyvinyl acetal resin.
  • As for said 2nd resin only 1 type may be used and 2 or more types may be used together.
  • the intermediate film preferably contains a resin that is incompatible with the polyvinyl acetal resin as the second resin.
  • the interlayer film preferably contains a polyolefin resin, an acrylic polymer, a urethane polymer, a silicone polymer, rubber, or a vinyl acetate polymer.
  • the interlayer film more preferably contains an acrylic polymer that easily balances performance.
  • the acrylic polymer is preferably a polymer of a polymerizable component containing (meth) acrylic acid ester.
  • the acrylic polymer is preferably a poly (meth) acrylic acid ester.
  • the poly (meth) acrylic acid ester is not particularly limited.
  • examples of the poly (meth) acrylic acid ester include poly (meth) acrylate methyl, poly (meth) ethyl acrylate, poly (meth) acrylate n-propyl, poly (meth) acrylate i-propyl, poly N-butyl (meth) acrylate, i-butyl poly (meth) acrylate, t-butyl poly (meth) acrylate, 2-ethylhexyl poly (meth) acrylate, 2-hydroxyethyl poly (meth) acrylate, Poly (meth) acrylate 2-hydroxypropyl, poly (meth) acrylate 4-hydroxybutyl, poly (meth) acrylate glycidyl, poly (meth) acrylate octyl, poly (meth) acrylate propyl, poly (meth) 2-ethyloctyl acrylate, poly (meth)
  • Examples of (meth) acrylic acid having a polar group and (meth) acrylic acid ester include (meth) acrylic acid, 2-hydroxyethyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, and Examples include glycidyl (meth) acrylate.
  • polyacrylate is preferred, and polyethyl acrylate, poly (n-butyl acrylate), poly (acrylic acid) are preferred. 2-ethylhexyl acid or octyl polyacrylate is more preferred.
  • the productivity of the intermediate film and the balance of the characteristics of the intermediate film are further improved.
  • the said poly (meth) acrylic acid ester only 1 type may be used and 2 or more types may be used together.
  • the content of the second resin other than the polyvinyl acetal resin is preferably 20% by weight or more, more preferably 25% by weight or more, and still more preferably 30%. % By weight or more, particularly preferably 35% by weight or more, preferably less than 100% by weight.
  • the content of the second resin is preferably 90% by weight or less, more preferably 80% by weight or less, and even more preferably 75% by weight or less. Particularly preferred is 70% by weight or less, and most preferred is 65% by weight or less.
  • the content of the acrylic polymer is preferably 20% by weight or more, more preferably 25% by weight or more, still more preferably 30% by weight or more, particularly preferably. It is 35% by weight or more, preferably less than 100% by weight.
  • the content of the acrylic polymer is not less than the above lower limit, the bending rigidity is effectively increased.
  • the content of the acrylic polymer is preferably 90% by weight or less, more preferably 80% by weight or less, still more preferably 75% by weight or less, Particularly preferred is 70% by weight or less, and most preferred is 65% by weight or less.
  • the content of the acrylic polymer is not more than the above upper limit, the bending rigidity, the bonding property and the sound insulating property are effectively increased.
  • the second resin has a crosslinked structure, or the polyvinyl acetal resin and the second resin are crosslinked.
  • the intermediate film may contain the polyvinyl acetal resin and the second resin as a crosslinked product in which the polyvinyl acetal resin and the second resin are crosslinked.
  • the thermoplastic resin may have a crosslinked structure. With the cross-linked structure, the shear storage elastic modulus can be controlled, and an intermediate film having both excellent flexibility and high strength can be produced.
  • the glass transition temperature of the polyvinyl acetal resin is the glass transition temperature of the component derived from the polyvinyl acetal resin in the crosslinked product.
  • the glass transition temperature of the second resin indicates the glass transition temperature of the component derived from the second resin in the crosslinked product.
  • the first layer (including a single-layer intermediate film) preferably includes a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (1)).
  • the first layer preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (1)) as the thermoplastic resin (1).
  • the intermediate film is a single-layer intermediate film composed of only the first layer, the intermediate film contains the polyvinyl acetal resin (1).
  • the second layer preferably contains a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (2)).
  • the second layer preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (2)) as the thermoplastic resin (2).
  • the third layer preferably contains a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (3)).
  • the third layer preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (3)) as the thermoplastic resin (3).
  • the polyvinyl acetal resin (1), the polyvinyl acetal resin (2), and the polyvinyl acetal resin (3) may be the same or different. Since the sound insulation is further enhanced, the polyvinyl acetal resin (1) is preferably different from the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3).
  • the thermoplastic resin (1), the thermoplastic resin (2), and the thermoplastic resin (3) may be the same or different.
  • the said polyvinyl acetal resin (1), the said polyvinyl acetal resin (2), and the said polyvinyl acetal resin (3) only 1 type may respectively be used and 2 or more types may be used together.
  • the said thermoplastic resin (1), the said thermoplastic resin (2), and the said thermoplastic resin (3) only 1 type may respectively be used and 2 or more types may be used together.
  • thermoplastic resin examples include polyvinyl acetal resin, polyacrylic resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, polyurethane resin, and polyvinyl alcohol resin. Thermoplastic resins other than these may be used.
  • the polyvinyl acetal resin is preferably an acetalized 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 70 to 99.9 mol%.
  • the average degree of polymerization of the polyvinyl alcohol (PVA) is preferably 200 or more, more preferably 500 or more, still more preferably 1500 or more, still more preferably 1600 or more, particularly preferably 2600 or more, most preferably 2700 or more, preferably It is 5000 or less, more preferably 4000 or less, and still more preferably 3500 or less.
  • the average degree of polymerization is not less than the above lower limit, the penetration resistance and bending rigidity of the laminated glass are further increased.
  • the average degree of polymerization is not more than the above upper limit, the intermediate film can be easily molded.
  • the average degree of polymerization of the polyvinyl alcohol is determined by a method based on JIS K6726 “Testing method for polyvinyl alcohol”.
  • the carbon number of the acetal group in the polyvinyl acetal resin is preferably 2 to 10, and more preferably 2, 7 or 10 from the viewpoint of effectively increasing the bending rigidity at high temperature.
  • the carbon number of the acetal group in the polyvinyl acetal resin is preferably 2 or 4, and in this case, the production of the polyvinyl acetal resin is efficient.
  • an aldehyde having 1 to 10 carbon atoms is suitably used as the aldehyde.
  • the aldehyde having 1 to 10 carbon atoms include formaldehyde, acetaldehyde, propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, Examples include n-nonyl aldehyde, n-decyl aldehyde, cumin aldehyde, and benzaldehyde.
  • Acetaldehyde, n-butyraldehyde, isobutyraldehyde, cuminaldehyde or benzaldehyde are preferred, and acetaldehyde, n-butyraldehyde, isobutyraldehyde, cuminaldehyde or benzaldehyde are more preferred. More preferred is acetaldehyde, n-butyraldehyde, cuminaldehyde or benzaldehyde.
  • the said aldehyde only 1 type may be used and 2 or more types may be used together.
  • the hydroxyl content (hydroxyl group amount) of the polyvinyl acetal resin (1) is preferably in the following range.
  • the hydroxyl group content (hydroxyl content) of the polyvinyl acetal resin (1) is preferably 25 mol% or more, more preferably 28 mol% or more, more preferably 30 mol% or more, and even more preferably 31.5 mol%. More preferably, it is at least 32 mol%, particularly preferably at least 33 mol%.
  • the hydroxyl group content (hydroxyl group amount) of the polyvinyl acetal resin (1) is preferably 45 mol% or less, more preferably 43 mol% or less, still more preferably 41 mol% or less.
  • the hydroxyl group content is at least the above lower limit, the bending rigidity is further increased, and the adhesive strength of the interlayer film is further increased. Further, when the hydroxyl group content is not more than the above upper limit, the flexibility of the interlayer film is increased, and the handling of the interlayer film is facilitated.
  • the hydroxyl content (hydroxyl content) of the polyvinyl acetal resin (1) is preferably in the following range.
  • the hydroxyl group content (hydroxyl group amount) of the polyvinyl acetal resin (1) is preferably 17 mol% or more, more preferably 20 mol% or more, still more preferably 22 mol% or more, preferably 45 mol% or less, more preferably. Is 43 mol% or less, more preferably 41 mol% or less.
  • the hydroxyl group content is not more than the above upper limit, the flexibility of the interlayer film is increased, and the handling of the interlayer film is facilitated.
  • the hydroxyl group content of the polyvinyl acetal resin (1) is 20 mol% or more, the reaction efficiency is high and the productivity is excellent, and when it is 45 mol% or less, the sound insulation of the laminated glass is further enhanced.
  • the laminated glass using the interlayer film in which the hydroxyl group content of the polyvinyl acetal resin (1) is 28 mol% or less tends to have a low bending rigidity. Can improve.
  • the content of each hydroxyl group in the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 25 mol% or more, more preferably 28 mol% or more, more preferably 30 mol% or more, and still more preferably. It is 31.5 mol% or more, more preferably 32 mol% or more, and particularly preferably 33 mol% or more.
  • Each content rate of the hydroxyl group of the said polyvinyl acetal resin (2) and the said polyvinyl acetal resin (3) becomes like this. Preferably it is 45 mol% or less, More preferably, it is 43 mol% or less, More preferably, it is 41 mol% or less.
  • the hydroxyl group content is at least the above lower limit, the bending rigidity is further increased, and the adhesive strength of the interlayer film is further increased. Further, when the hydroxyl group content is not more than the above upper limit, the flexibility of the interlayer film is increased, and the handling of the interlayer film is facilitated.
  • the hydroxyl group content of the polyvinyl acetal resin is a value indicating the mole fraction obtained by dividing the amount of ethylene groups to which the hydroxyl group is bonded by the total amount of ethylene groups in the main chain, as a percentage.
  • the amount of the ethylene group to which the hydroxyl group is bonded can be measured, for example, according to JIS K6728 “Testing method for polyvinyl butyral”.
  • the degree of acetylation (acetyl group amount) of the polyvinyl acetal resin (1) is preferably 0.01 mol% or more, more preferably 0.1 mol% or more, still more preferably 7 mol% or more, still more preferably 9 It is at least mol%, preferably at most 30 mol%, more preferably at most 25 mol%, still more preferably at most 24 mol%.
  • the degree of acetylation is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer or other thermoplastic resin is increased, and the sound insulation and penetration resistance are further improved.
  • the acetylation degree is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass is increased.
  • the degree of acetylation of the polyvinyl acetal resin (1) is 0.1 mol% or more and 25 mol% or less, the penetration resistance is further improved.
  • Each degree of acetylation of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 0.01 mol% or more, more preferably 0.5 mol% or more, preferably 10 mol% or less, more preferably. Is 2 mol% or less.
  • the acetylation degree is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer is increased.
  • the acetylation degree is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass is increased.
  • the degree of acetylation is a value obtained by dividing the amount of ethylene groups to which the acetyl group is bonded by the total amount of ethylene groups in the main chain, as a percentage.
  • the amount of ethylene group to which the acetyl group is bonded can be measured, for example, according to JIS K6728 “Testing method for polyvinyl butyral”.
  • the degree of acetalization of the polyvinyl acetal resin (1) is preferably 47 mol% or more, more preferably 50 mol% or more, still more preferably 68 mol% or more, preferably It is 85 mol% or less, More preferably, it is 80 mol% or less, More preferably, it is 75 mol% or less.
  • the degree of acetalization is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer increases.
  • the degree of acetalization is less than or equal to the above upper limit, the reaction time required for producing a polyvinyl acetal resin is shortened.
  • Each degree of acetalization (degree of butyralization in the case of polyvinyl butyral resin) of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 55 mol% or more, more preferably 57 mol% or more, preferably Is 75 mol% or less, more preferably 71 mol% or less.
  • degree of acetalization is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer increases.
  • the degree of acetalization is less than or equal to the above upper limit, the reaction time required for producing a polyvinyl acetal resin is shortened.
  • the degree of acetalization is obtained as follows. First, a value obtained by subtracting the amount of ethylene groups bonded with hydroxyl groups and the amount of ethylene groups bonded with acetyl groups from the total amount of ethylene groups in the main chain is obtained. The obtained value is divided by the total amount of ethylene groups in the main chain to obtain the mole fraction. A value indicating the mole fraction as a percentage is the degree of acetalization.
  • the hydroxyl group content (hydroxyl content), acetalization degree (butyralization degree), and acetylation degree are preferably calculated from results measured by a method in accordance with JIS K6728 “Testing methods for polyvinyl butyral”. However, measurement by ASTM D1396-92 may be used.
  • the polyvinyl acetal resin is a polyvinyl butyral resin
  • the hydroxyl group content (hydroxyl amount), the acetalization degree (butyralization degree), and the acetylation degree are determined in accordance with JIS K6728 “Testing methods for polyvinyl butyral”. It can be calculated from the results measured by
  • the interlayer film preferably contains a plasticizer.
  • the first layer (including a single-layer interlayer) preferably includes a plasticizer (hereinafter sometimes referred to as a plasticizer (1)).
  • the second layer preferably contains a plasticizer (hereinafter sometimes referred to as a plasticizer (2)).
  • the third layer preferably contains a plasticizer (hereinafter may be referred to as a plasticizer (3)).
  • a plasticizer By using a plasticizer, and by using a polyvinyl acetal resin and a plasticizer in combination, the penetration resistance is further improved, and the adhesive strength of the layer containing the polyvinyl acetal resin and the plasticizer to the laminated glass member or other layers is moderately high. Become.
  • the plasticizer is not particularly limited.
  • the plasticizer (1), the plasticizer (2), and the plasticizer (3) may be the same or different. As for the said plasticizer (1), the said plasticizer (2), and the said plasticizer (3), only 1 type may respectively be used and 2 or more types may be used
  • plasticizer examples include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and organic phosphate plasticizers such as organic phosphoric acid plasticizers and organic phosphorous acid plasticizers. .
  • organic ester plasticizers are preferred.
  • the plasticizer is preferably a liquid plasticizer.
  • Examples of the monobasic organic acid ester include glycol esters obtained by a reaction between glycol and a monobasic organic acid.
  • Examples of the glycol include triethylene glycol, tetraethylene glycol, and tripropylene glycol.
  • Examples of the monobasic organic acid include butyric acid, isobutyric acid, caproic acid, 2-ethylbutyric acid, heptylic acid, n-octylic acid, 2-ethylhexylic acid, n-nonylic acid, and decylic acid.
  • polybasic organic acid ester examples include ester compounds of a polybasic 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, and azelaic acid.
  • organic ester plasticizer examples include triethylene glycol di-2-ethylpropanoate, triethylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylhexanoate, triethylene glycol dicaprylate, Triethylene glycol di-n-octanoate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, dibutyl sebacate, dioctyl azelate, dibutyl carbitol adipate, ethylene glycol di-2-ethylbutyrate, 1,3-propylene glycol di-2-ethyl butyrate, 1,4-butylene glycol di-2-ethyl butyrate, diethylene glycol di-2-ethyl butyrate, diethylene glycol di-2-ethyl Hexanoate, dipropylene glycol di-2-ethylbutyrate, triethylene glycol di-2-eth
  • organic phosphate plasticizer examples include tributoxyethyl phosphate, isodecylphenyl phosphate, tricresyl 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
  • R1 and R2 in the above formula (1) are each 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 includes triethylene glycol di-2-ethylhexanoate or triethylene glycol di-2-ethylbutyrate, and further includes triethylene glycol di-2-ethylhexanoate. preferable.
  • the plastic with respect to 100 parts by weight of the thermoplastic resin (2) (when the thermoplastic resin (2) is a polyvinyl acetal resin (2), 100 parts by weight of the polyvinyl acetal resin (2)).
  • content of an agent (2) be content (2).
  • the plastic relative to 100 parts by weight of the thermoplastic resin (3) (when the thermoplastic resin (3) is a polyvinyl acetal resin (3), 100 parts by weight of the polyvinyl acetal resin (3)).
  • content of an agent (3) be content (3).
  • the content (2) and the content (3) are each preferably 10 parts by weight or more, more preferably 15 parts by weight or more, preferably 40 parts by weight or less, more preferably 35 parts by weight or less, and still more preferably 32 parts.
  • the content (2) and the content (3) are equal to or higher than the lower limit, the flexibility of the intermediate film is increased and the handling of the intermediate film is facilitated.
  • the content (2) and the content (3) are equal to or lower than the upper limit, the bending rigidity is further increased.
  • the plastic relative to 100 parts by weight of the thermoplastic resin (1) (or 100 parts by weight of the polyvinyl acetal resin (1) when the thermoplastic resin (1) is a polyvinyl acetal resin (1)).
  • content of an agent (1) be content (1).
  • the content (1) is preferably 1 part by weight or more, more preferably 2 parts by weight or more, still more preferably 3 parts by weight or more, still more preferably 5 parts by weight or more, preferably 90 parts by weight or less, more preferably 85 parts by weight or less, more preferably 80 parts by weight or less.
  • the content (1) is not less than the above lower limit, the flexibility of the intermediate film is increased, and the handling of the intermediate film is facilitated.
  • the content (1) may be 50 parts by weight or more, 55 parts by weight or more, or 60 parts by weight or more.
  • the content (1) may be 30 parts by weight or less, 20 parts by weight or less, or 10 parts by weight or less.
  • the intermediate film preferably contains a heat shielding material (heat shielding compound).
  • the first layer preferably contains a heat shielding material.
  • the second layer preferably includes a heat shielding material.
  • the third layer preferably contains a heat shielding material. As for the said heat-shielding substance, only 1 type may be used and 2 or more types may be used together.
  • the heat-insulating substance preferably contains at least one component X of phthalocyanine compounds, naphthalocyanine compounds and anthracocyanine compounds, or contains heat-shielding particles. In this case, both the component X and the heat shielding particles may be included.
  • the intermediate film preferably includes at least one component X among a phthalocyanine compound, a naphthalocyanine compound, and an anthracocyanine 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 material. As for the said component X, only 1 type may be used and 2 or more types may be used together.
  • the component X is not particularly limited.
  • component X conventionally known phthalocyanine compounds, naphthalocyanine compounds and anthracocyanine compounds can be used.
  • the component X is preferably at least one selected from the group consisting of phthalocyanine, phthalocyanine derivatives, naphthalocyanine, and naphthalocyanine derivatives. More preferably, it is at least one of phthalocyanine and phthalocyanine derivatives.
  • 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 phthalocyanine containing a vanadium atom or a copper atom and a phthalocyanine derivative containing a vanadium atom or a copper atom.
  • the component X preferably 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 or more, more preferably 0.005. % By weight or more, more preferably 0.01% by weight or more, particularly preferably 0.02% by weight or more. In 100% by weight of the layer containing the component X (first layer, second layer, or third layer), the content of the component X is preferably 0.2% by weight or less, more preferably 0.1%. % By weight or less, more preferably 0.05% by weight or less, 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.
  • Thermal barrier particles The intermediate film preferably contains heat shielding particles.
  • the first layer (including a single-layer intermediate film) preferably includes the heat shielding particles.
  • the second layer preferably includes the heat shielding particles.
  • the third layer preferably contains the heat shielding particles.
  • the heat shielding particles are heat shielding materials. By using heat shielding particles, infrared rays (heat rays) can be effectively blocked. As for the said heat-shielding particle, only 1 type may be used and 2 or more types may be used together.
  • the heat shielding particles are more preferably metal oxide particles.
  • the heat shielding particles are preferably particles (metal oxide particles) formed of a metal oxide.
  • Infrared rays having a wavelength longer than 780 nm longer than visible light have a smaller amount of energy than ultraviolet rays.
  • infrared rays have a large thermal effect, and when infrared rays are absorbed by a substance, they are released as heat. For this reason, infrared rays are generally called heat rays.
  • heat shielding particles By using the heat shielding particles, infrared rays (heat rays) can be effectively blocked.
  • the heat shielding particles mean particles that can absorb infrared rays.
  • heat shielding 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), niobium doped titanium oxide particles, sodium doped tungsten oxide particles, cesium doped tungsten oxide particles, thallium doped tungsten oxide particles, rubidium doped tungsten oxide particles, tin doped indium oxide particles (ITO particles) And metal oxide particles such as tin-doped zinc oxide particles and silicon-doped zinc oxide particles, and lanthanum hexaboride (LaB 6 ) particles. Heat shielding particles other than these may be used.
  • Metal oxide particles are preferred because of their high heat ray shielding function, ATO particles, GZO particles, IZO particles, ITO particles or tungsten oxide particles are more preferred, and ITO particles or tungsten oxide particles are particularly preferred.
  • tin-doped indium oxide particles (ITO particles) are preferable, and 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 “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, thallium-doped tungsten oxide particles, and rubidium-doped tungsten oxide particles.
  • cesium-doped tungsten oxide particles are particularly preferable.
  • the cesium-doped tungsten oxide particles are preferably tungsten oxide particles represented by the formula: Cs 0.33 WO 3 .
  • the average particle diameter of the heat shielding particles is preferably 0.01 ⁇ m or more, more preferably 0.02 ⁇ m or more, preferably 0.1 ⁇ m or less, more preferably 0.05 ⁇ m or less.
  • the average particle size is not less than the above lower limit, the heat ray shielding property is sufficiently increased.
  • the average particle size is not more than the above upper limit, the dispersibility of the heat shielding particles is increased.
  • the above “average particle diameter” indicates the volume average particle diameter.
  • the average particle diameter can be measured using a particle size distribution measuring device (“UPA-EX150” manufactured by Nikkiso Co., Ltd.) or the like.
  • the content of the heat shielding particles is preferably 0.01% by weight or more, more preferably 0%. .1% by weight or more, more preferably 1% by weight or more, and particularly preferably 1.5% by weight or more.
  • the content of the heat shielding particles is preferably 6% by weight or less, more preferably 5.5%. % By weight or less, more preferably 4% by weight or less, particularly preferably 3.5% by weight or less, and most preferably 3% by weight or less.
  • the intermediate film preferably contains at least one metal salt (hereinafter sometimes referred to as metal salt M) among alkali metal salts, alkaline earth metal salts, and magnesium salts.
  • the first layer preferably includes the metal salt M.
  • the second layer preferably contains the metal salt M.
  • the third layer preferably contains the metal salt M.
  • Use of the metal salt M makes it easy to control the adhesion between the interlayer film and the laminated glass member or the adhesion between the layers in the interlayer film.
  • the said metal salt M only 1 type may be used and 2 or more types may be used together.
  • 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 of 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, or a magnesium salt of an organic acid having 2 to 16 carbon atoms. Is more preferable, and it is more preferably a carboxylic acid magnesium salt having 2 to 16 carbon atoms or a carboxylic acid potassium salt having 2 to 16 carbon atoms.
  • Examples of the C 2-16 carboxylic acid magnesium salt and the C 2-16 carboxylic acid potassium salt include magnesium acetate, potassium acetate, magnesium propionate, potassium propionate, magnesium 2-ethylbutyrate, 2-ethylbutanoic acid. Examples include potassium, magnesium 2-ethylhexanoate, and potassium 2-ethylhexanoate.
  • the total content of Mg and K in the layer containing the metal salt M is preferably 5 ppm or more, more preferably 10 ppm or more, and even 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 adhesion between the interlayer film and the laminated glass member or the adhesion between the layers in the interlayer film can be controlled even better.
  • the intermediate 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.
  • the ultraviolet shielding agent includes an ultraviolet 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). ), UV screening agent having triazine structure (triazine compound), UV screening agent having malonate ester structure (malonic acid ester compound), UV screening agent having oxalic acid anilide structure (oxalic acid anilide compound) and benzoate structure Examples thereof include an ultraviolet shielding agent (benzoate compound).
  • Examples of the ultraviolet shielding agent containing a metal atom include platinum particles, particles having platinum particles coated with silica, palladium particles, and particles having palladium particles coated with silica.
  • the ultraviolet shielding agent is preferably not a heat shielding particle.
  • 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 more preferably an ultraviolet shielding agent having a benzotriazole structure.
  • Examples of the ultraviolet shielding agent containing the metal oxide include zinc oxide, titanium oxide, and cerium oxide. Furthermore, the surface may be coat
  • Examples of the ultraviolet screening agent having the benzotriazole structure include 2- (2′-hydroxy-5′-methylphenyl) benzotriazole (“TinvinP” manufactured by BASF), 2- (2′-hydroxy-3 ′, 5′-di-t-butylphenyl) benzotriazole (“Tinvin 320” manufactured by BASF), 2- (2′-hydroxy-3′-t-butyl-5-methylphenyl) -5-chlorobenzotriazole (BASF) And “Tinuvin 326” manufactured by BASF, etc.) and the like.
  • the ultraviolet shielding agent is preferably an ultraviolet shielding agent having a benzotriazole structure containing a halogen atom, and may be an ultraviolet shielding agent having a benzotriazole structure containing a chlorine atom. More preferred.
  • Examples of the ultraviolet shielding agent having the benzophenone structure include octabenzone (“Chimasorb 81” manufactured by BASF).
  • UV shielding agent having the triazine structure examples include “LA-F70” manufactured by ADEKA and 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl). Oxy] -phenol (“Tinuvin 1577FF” manufactured by BASF) and the like.
  • UV screening agent having a malonic ester structure examples include dimethyl 2- (p-methoxybenzylidene) malonate, tetraethyl-2,2- (1,4-phenylenedimethylidene) bismalonate, and 2- (p-methoxybenzylidene).
  • 2- (p-methoxybenzylidene) malonate examples include dimethyl 2- (p-methoxybenzylidene) malonate, tetraethyl-2,2- (1,4-phenylenedimethylidene) bismalonate, and 2- (p-methoxybenzylidene).
  • Examples of commercially available ultraviolet screening agents having a malonic 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 anilide structure include N- (2-ethylphenyl) -N ′-(2-ethoxy-5-tert-butylphenyl) oxalic acid diamide, N- (2-ethylphenyl)- Oxalic acid diamides having an aryl group substituted on the nitrogen atom such as N ′-(2-ethoxy-phenyl) oxalic acid diamide, 2-ethyl-2′-ethoxy-oxyanilide (“SlandorVSU” manufactured by Clariant)kind.
  • 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). .
  • the content of the ultraviolet screening agent is preferably 0.1% by weight or more, more preferably 0%. .2% by weight or more, more preferably 0.3% by weight or more, and particularly preferably 0.5% by weight or more.
  • the content of the ultraviolet shielding agent is preferably 2.5% by weight or less, more preferably 2%. % By weight or less, more preferably 1% by weight or less, 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, a decrease in visible light transmittance after a lapse of time can be further suppressed.
  • the content of the ultraviolet shielding agent is 0.2% by weight or more, thereby reducing the visible light transmittance after the passage of the intermediate film and the laminated glass. Remarkably suppressed.
  • the intermediate 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. As for the said antioxidant, only 1 type may be used and 2 or more types may be used together.
  • antioxidants examples include phenol-based antioxidants, sulfur-based antioxidants, and phosphorus-based antioxidants.
  • the phenolic antioxidant is an antioxidant having a phenol skeleton.
  • the sulfur-based antioxidant is an antioxidant containing a sulfur atom.
  • the phosphorus antioxidant is an antioxidant containing a phosphorus atom.
  • the antioxidant is preferably a phenolic antioxidant or a phosphorus antioxidant.
  • phenolic antioxidant examples include 2,6-di-t-butyl-p-cresol (BHT), butylhydroxyanisole (BHA), 2,6-di-t-butyl-4-ethylphenol, stearyl- ⁇ - (3,5-di-t-butyl-4-hydroxyphenyl) propionate, 2,2′-methylenebis- (4-methyl-6-butylphenol), 2,2′-methylenebis- (4-ethyl-6) -T-butylphenol), 4,4'-butylidene-bis- (3-methyl-6-t-butylphenol), 1,1,3-tris- (2-methyl-hydroxy-5-t-butylphenyl) butane Tetrakis [methylene-3- (3 ′, 5′-butyl-4-hydroxyphenyl) propionate] methane, 1,3,3-tris- (2-methyl-4-hydro) Loxy-5-t-butylphenol) butane, 1,3,5-trimethyl-2,4,6
  • Examples of the phosphorus antioxidant include tridecyl phosphite, tris (tridecyl) phosphite, triphenyl phosphite, trinonylphenyl phosphite, bis (tridecyl) pentaerythritol diphosphite, bis (decyl) pentaerythritol diphos.
  • antioxidants examples include “IRGANOX 245” manufactured by BASF, “IRGAFOS 168” manufactured by BASF, “IRGAFOS 38” manufactured by BASF, “Smilizer BHT” manufactured by Sumitomo Chemical Co., Ltd., and Sakai Chemical Industry Examples thereof include “H-BHT” and “IRGANOX 1010” manufactured by BASF.
  • a layer in 100% by weight of the interlayer film or containing an antioxidant.
  • the content of the antioxidant is preferably 0.1% by weight or more.
  • the content of the antioxidant is preferably 2% by weight or less in 100% by weight of the intermediate film or 100% by weight of the layer containing the antioxidant.
  • the intermediate film, the first layer, the second layer, and the third layer are respectively a coupling agent containing silicon, aluminum, or titanium, a dispersant, a surfactant, a flame retardant, Additives such as antistatic agents, fillers, pigments, dyes, adhesive strength modifiers, moisture-proofing agents, fluorescent brighteners and infrared absorbers may be included. As for these additives, only 1 type may be used and 2 or more types may be used together.
  • the intermediate film, the first layer, the second layer, and the third layer may contain a filler.
  • the filler include calcium carbonate particles and silica particles. Silica particles are preferable from the viewpoint of effectively increasing the bending rigidity and effectively suppressing the decrease in transparency.
  • the content of the filler is preferably 1% by weight or more, more preferably 5% by weight or more, and still more preferably. It is 10 weight part or more, Preferably it is 60 weight% or less, More preferably, it is 50 weight% or less.
  • the thickness of the intermediate film is not particularly limited. From the viewpoint of practical use and from the viewpoint of sufficiently enhancing the penetration resistance and bending 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, preferably 3 mm or less, more Preferably it is 1.5 mm or less. When the thickness of the interlayer film is not less than the above lower limit, the penetration resistance and bending 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 is further improved.
  • the intermediate film may be an intermediate film having a uniform thickness or an intermediate film having a changed thickness.
  • the cross-sectional shape of the intermediate film may be rectangular or wedge-shaped.
  • 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 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, a method in which each layer is formed using each resin composition for forming each layer and then the obtained layers are stacked.
  • a method of laminating each layer by coextruding each resin composition for forming each layer using an extruder may be used. Since it is suitable for continuous production, an extrusion method is preferred.
  • the same polyvinyl acetal resin is contained in the second layer and the third layer. Since the production efficiency of the intermediate film is excellent, it is more preferable that the same polyvinyl acetal resin and the same plasticizer are contained in the second layer and the third layer. Since the production efficiency of the intermediate film is excellent, it is more preferable that the second layer and the third layer are formed of the same resin composition.
  • the intermediate film preferably has an uneven shape on at least one of the surfaces on both sides. More preferably, the intermediate film has a concavo-convex shape on both surfaces. It does not specifically limit as a method of forming said uneven
  • the embossing roll method is preferable because it can form a large number of concavo-convex embossments that are quantitatively constant.
  • FIG. 3 is a cross-sectional view schematically showing an example of a laminated glass using the laminated glass interlayer film shown in FIG.
  • the intermediate film 11 is disposed between the first laminated glass member 21 and the second laminated glass member 22 and is sandwiched.
  • the first laminated glass member 21 is laminated on the first surface 11 a of the intermediate film 11.
  • a second laminated glass member 22 is laminated on the second surface 11 b opposite to the first surface 11 a of the intermediate film 11.
  • a first laminated glass member 21 is laminated on the outer surface 2 a of the second layer 2.
  • a second laminated glass member 22 is laminated on the outer surface 3 a of the third layer 3.
  • FIG. 4 is a cross-sectional view schematically showing an example of laminated glass using the interlayer film for laminated glass shown in FIG.
  • a laminated glass 31A shown in FIG. 4 includes a first laminated glass member 21, a second laminated glass member 22, and an intermediate film 11A.
  • 11 A of intermediate films are arrange
  • the first laminated glass member 21 is laminated on the first surface 11a of the intermediate film 11A.
  • a second laminated glass member 22 is laminated on the second surface 11b opposite to the first surface 11a of the intermediate film 11A.
  • the laminated glass which concerns on this invention is equipped with the 1st laminated glass member, the 2nd laminated glass member, and the intermediate film, and this intermediate film is the intermediate film for laminated glasses which concerns on this invention. It is.
  • the interlayer film is disposed 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.
  • the laminated glass member examples include a glass plate and a PET (polyethylene terephthalate) film.
  • Laminated glass includes not only laminated glass in which an intermediate film is sandwiched between two glass plates, but also laminated glass in which an intermediate film is sandwiched between a glass plate and a PET film or the like.
  • the laminated glass is a laminate including a glass plate, and preferably at least one glass plate is used.
  • Each of the first laminated glass member and the second laminated glass member is a glass plate or a PET film, and the laminated glass is one of the first laminated glass member and the second laminated glass member. It is preferable to provide a glass plate as at least one.
  • 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, mold plate glass, and wire-containing plate glass.
  • the organic glass is a synthetic resin glass that replaces the inorganic glass.
  • examples of the organic glass include polycarbonate plates and poly (meth) acrylic resin plates.
  • Examples of the poly (meth) acrylic resin plate include a polymethyl (meth) acrylate plate.
  • the thickness of the laminated glass member is preferably 1 mm or more, preferably 5 mm or less, 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, more preferably 3 mm or less.
  • the thickness of the PET film is preferably 0.03 mm or more, and preferably 0.5 mm or less.
  • the use of the interlayer film according to the present invention makes it possible to maintain the bending rigidity of the laminated glass high even if the laminated glass is thin.
  • the thickness of the glass plate is preferably 2 mm or less, more preferably 1.8 mm or less, even more preferably 1.6 mm or less, still more preferably 1.5 mm or less, still more preferably 1.4 mm or less, and even more preferably 1. 0.3 mm or less, still more preferably 1.0 mm or less, and particularly preferably 0.7 mm or less.
  • the laminated glass can be reduced in weight
  • the environmental load can be reduced by reducing the material of the laminated glass
  • the environmental load can be reduced by improving the fuel efficiency of the automobile by reducing the weight of the laminated glass. .
  • the total thickness of the first glass plate and the second glass plate is preferably 3.5 mm or less, more preferably 3.2 mm or less, still more preferably 3 mm or less, particularly preferably 2.8 mm or less. It is.
  • the laminated glass can be reduced in weight
  • the environmental load can be reduced by reducing the material of the laminated glass
  • the environmental load can be reduced by improving the fuel efficiency of the automobile by reducing the weight of the laminated glass. .
  • the method for producing the laminated glass is not particularly limited. First, an interlayer film is sandwiched between the first laminated glass member and the second laminated glass member to obtain a laminate. Next, for example, by passing the obtained laminate through a pressing roll or putting it in a rubber bag and sucking under reduced pressure, the first laminated glass member, the second laminated glass member, and the intermediate film The remaining air is deaerated. Thereafter, pre-bonding is performed at about 70 to 110 ° C. to obtain a pre-bonded laminate. Next, the pre-pressed laminate is put in an autoclave or pressed and pressed at about 120 to 150 ° C. and a pressure of 1 to 1.5 MPa. In this way, a laminated glass can be obtained. You may laminate
  • the interlayer film and the laminated glass can be used for automobiles, railway vehicles, aircraft, ships, buildings, and the like.
  • the said intermediate film and the said laminated glass can be used besides these uses.
  • the interlayer film and the laminated glass are preferably a vehicle or architectural interlayer film and a laminated glass, and more preferably a vehicle interlayer film and a laminated glass.
  • the intermediate film and the laminated glass can be used for an automobile windshield, side glass, rear glass, roof glass, or the like.
  • the interlayer film and the laminated glass are suitably used for automobiles.
  • the interlayer film is used for obtaining laminated glass for automobiles.
  • Polyvinyl acetal resin Polyvinyl acetal resins shown in Tables 1 to 3 below were appropriately used.
  • the degree of acetalization, the degree of acetylation, and the hydroxyl group content were measured by a method in accordance with JIS K6728 “Testing methods for polyvinyl butyral”. In addition, when measured by ASTM D1396-92, the same numerical value as the method based on JIS K6728 “Testing method for polyvinyl butyral” was shown. Further, when the type of acetal is acetoacetal, benzyl acetal or cumin acetal, the degree of acetal is similarly measured for the degree of acetylation and the content of hydroxyl groups, and the molar fraction is determined from the obtained measurement results. Calculated, and then calculated by subtracting the degree of acetylation and the hydroxyl group content from 100 mol%.
  • the acrylic polymers shown in Tables 1 to 3 below are acrylic polymers obtained by polymerizing polymerizable components containing the following compounds in the contents shown in Tables 1 to 3 below.
  • Tinuvin 326 (2- (2′-hydroxy-3′-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole, “Tinuvin 326” manufactured by BASF)
  • Example 1 Preparation of a composition for forming the first layer: 100 parts by weight of a polyvinyl acetal resin of the type shown in Table 1 below, 150 parts by weight of an acrylic polymer of the type shown in Table 1 below, 10 parts by weight of a plasticizer (3GO), and an ultraviolet shielding agent (Tinvin 326) 0. 2 parts by weight and 0.2 parts by weight of an antioxidant (BHT) were mixed to obtain a composition for forming the first layer.
  • a polyvinyl acetal resin of the type shown in Table 1 below 150 parts by weight of an acrylic polymer of the type shown in Table 1 below, 10 parts by weight of a plasticizer (3GO), and an ultraviolet shielding agent (Tinvin 326) 0. 2 parts by weight and 0.2 parts by weight of an antioxidant (BHT) were mixed to obtain a composition for forming the first layer.
  • BHT antioxidant
  • compositions for forming the second and third layers 100 parts by weight of a polyvinyl acetal resin of the type shown in Table 1 below, 10 parts by weight of a plasticizer (3GO), 0.2 parts by weight of an ultraviolet shielding agent (Tinvin 326), and 0.2 parts by weight of an antioxidant (BHT) Were mixed to obtain a composition for forming the second layer and the third layer.
  • a polyvinyl acetal resin of the type shown in Table 1 below 10 parts by weight of a plasticizer (3GO), 0.2 parts by weight of an ultraviolet shielding agent (Tinvin 326), and 0.2 parts by weight of an antioxidant (BHT)
  • Preparation of interlayer film By co-extruding the composition for forming the first layer and the composition for forming the second layer and the third layer using a co-extruder, the second layer / second layer is formed. An intermediate film having a laminated structure of one layer / third layer was produced. The thickness of each layer is shown in Table 1 below.
  • Laminated glass production (for bending stiffness measurement): The obtained intermediate film was cut into a size of 20 cm long ⁇ 2.5 cm wide. As a 1st laminated glass member and a 2nd laminated glass member, the two glass plates (clear float glass, 20 cm long x 2.5 cm wide) of the thickness shown in following Table 1 were prepared. The obtained interlayer film was sandwiched between the two glass plates to obtain a laminate. The obtained laminate was put in a rubber bag and deaerated at a vacuum degree of 2660 Pa (20 torr) for 20 minutes. Thereafter, the laminate was vacuum-pressed while being deaerated while being further kept at 90 ° C. for 30 minutes in an autoclave. The laminated body preliminarily pressure-bonded in this manner was pressure-bonded for 20 minutes in an autoclave under conditions of 135 ° C. and a pressure of 1.2 MPa (12 kg / cm 2 ) to obtain a laminated glass.
  • Laminated glass production (for sound insulation measurement): The obtained intermediate film was cut into a size of 30 cm long ⁇ 2.5 cm wide.
  • two glass plates (clear float glass, length 30 cm ⁇ width 2.5 cm) having thicknesses shown in Table 1 below were prepared.
  • An interlayer film was sandwiched between two glass plates to obtain a laminate.
  • This laminated body is put in a rubber bag, deaerated at a vacuum degree of 2.6 kPa for 20 minutes, transferred to an oven while being deaerated, and further kept at 90 ° C. for 30 minutes and vacuum-pressed. Crimped.
  • the pre-pressed laminate was pressed for 20 minutes in an autoclave at 135 ° C. and a pressure of 1.2 MPa to obtain a laminated glass.
  • Example 2 and Comparative Example 1 The composition of the composition for forming the first layer and the composition of the composition for forming the second layer and the third layer were set as shown in Table 1 below, and the first layer In the same manner as in Example 1, except that the thicknesses of the second layer, the third layer, the first laminated glass member, and the second laminated glass member were set as shown in Table 1 below, And laminated glass was obtained.
  • Example 2 and Comparative Example 1 the same type of ultraviolet shielding agent and antioxidant as in Example 1 were added in the same amount as in Example 1 (0.2 parts by weight with respect to 100 parts by weight of the polyvinyl acetal resin). ).
  • Example 3 Preparation of a composition for forming an intermediate film (first layer): 100 parts by weight of a polyvinyl acetal resin of the type shown in Table 2 below, 120 parts by weight of an acrylic polymer of the type shown in Table 2 below, 0.2 part by weight of an ultraviolet shielding agent (Tinvin 326), and an antioxidant (BHT) ) 0.2 part by weight was mixed to obtain a composition for forming an intermediate film.
  • a polyvinyl acetal resin of the type shown in Table 2 below
  • an acrylic polymer of the type shown in Table 2 below 0.2 part by weight of an ultraviolet shielding agent (Tinvin 326), and an antioxidant (BHT) ) 0.2 part by weight was mixed to obtain a composition for forming an intermediate film.
  • BHT antioxidant
  • Preparation of interlayer film The composition for forming the intermediate film was extruded using an extruder to produce an intermediate film having a thickness shown in Table 2 below.
  • Laminated glass production (for bending stiffness measurement): A laminated glass was produced in the same manner as in Example 1 by using the obtained interlayer film.
  • Laminated glass production (for sound insulation measurement): A laminated glass was produced in the same manner as in Example 1 by using the obtained interlayer film.
  • Examples 4 to 11 and Comparative Examples 2 to 4 The composition of the composition for forming the interlayer film was set as shown in Tables 2 and 3 below, and the thicknesses of the interlayer film, the first laminated glass member, and the second laminated glass member were listed in Table 2 below. , 3 except that the setting was made as in Example 3 to obtain an interlayer film and a laminated glass.
  • the same type of ultraviolet shielding agent and antioxidant as in Example 3 were added in the same amount as in Example 3 (0% relative to 100 parts by weight of polyvinyl acetal resin). 2 parts by weight).
  • Viscoelasticity Shear storage modulus The shear storage modulus G ′ (70 ° C.) at 70 ° C. at a frequency of 1 Hz (shear storage equivalent elastic modulus in the case of a multilayer interlayer film) was measured. Specifically, the viscoelasticity measuring device “DVA-200” manufactured by IT Measurement Control Co., Ltd. was immediately after the obtained interlayer film was stored for 12 hours in an environment of room temperature 23 ⁇ 2 ° C. and humidity 25 ⁇ 5%. Was used to measure viscoelasticity. Measured under conditions of increasing the temperature from -50 ° C to 150 ° C at a heating rate of 3 ° C / min in shear mode, and at a frequency of 1 Hz and strain of 0.08%.
  • Glass-transition temperature Immediately after the obtained interlayer film was stored in an environment of room temperature 23 ⁇ 2 ° C. and humidity 25 ⁇ 5% for 12 hours, the viscoelasticity measuring device “DVA-200” manufactured by IT Measurement Control Co., Ltd. was used. A method for measuring elasticity can be mentioned. Measured under conditions of increasing the temperature from -50 ° C to 150 ° C at a heating rate of 3 ° C / min in shear mode, and at a frequency of 1 Hz and strain of 0.08%. did. The glass transition temperature of the polyvinyl acetal resin (the glass transition temperature of the component derived from the polyvinyl acetal resin) and the glass transition temperature of the second resin (the glass transition temperature of the component derived from the second resin) were evaluated.
  • Ratio B / A Immediately after the obtained interlayer film was stored in an environment of room temperature 23 ⁇ 2 ° C. and humidity 25 ⁇ 5% for 12 hours, the viscoelasticity measuring device “DVA-200” manufactured by IT Measurement Control Co., Ltd. was used. A method for measuring elasticity can be mentioned. Measured under conditions of increasing the temperature from -50 ° C to 150 ° C at a heating rate of 3 ° C / min in shear mode, and at a frequency of 1 Hz and strain of 0.08%. Went. The relationship between G ′ and temperature in Example 11 and Comparative Example 4 is shown in FIG.
  • Bending rigidity was evaluated by the test method schematically shown in FIG.
  • UTA-500 manufactured by Orientec Co., Ltd. equipped with a three-point bending test jig was used as a measuring apparatus.
  • the measurement conditions are as follows: measurement temperature 20 ° C. (20 ° C. ⁇ 3 ° C.), 40 ° C. (40 ° C. ⁇ 3 ° C.), 60 ° C. (60 ° C. ⁇ 3 ° C.) or 70 ° C. (70 ° C. ⁇ 3 ° C.).
  • the bending rigidity was calculated by measuring the stress when a displacement of 1.5 mm was applied to the glass in the direction of F at a displacement speed of 1 mm / min, with a displacement of 1 cm and a distance D2 of 20 cm.
  • the bending stiffness was determined according to the following criteria. The higher the value of bending rigidity, the better the bending rigidity.
  • Bending rigidity is 55 N / mm or more ⁇ : Bending rigidity is 45 N / mm or more and less than 55 N / mm ⁇ : Bending rigidity is less than 45 N / mm
  • Bending rigidity is 55 N / mm or more ⁇ : Bending rigidity is 45 N / mm or more and less than 55 N / mm ⁇ : Bending rigidity is 35 N / mm or more and less than 45 N / mm ⁇ : Bending rigidity is less than 35 N / mm
  • the obtained laminated glass was vibrated with a vibration generator for vibration testing (“Vibrator G21-005D” manufactured by KENKEN Co., Ltd.).
  • the vibration characteristics obtained therefrom were amplified by a mechanical impedance measuring device (“XG-81” manufactured by Lion Co., Ltd.), and the vibration spectrum was analyzed using an FFT spectrum analyzer (“FFT analyzer HP3582A” manufactured by Yokogawa Hewlett-Packard Co.).
  • the minimum sound transmission loss (TL value) was determined. The higher the TL value, the higher the sound insulation. Sound insulation was determined according to the following criteria.
  • TL value is 35 dB or more ⁇ : TL value is 30 dB or more and less than 35 dB ⁇ : TL value is less than 30 dB
  • ⁇ The area of the non-adhered portion of the total area is less than 5%.
  • ⁇ The area of the non-adhered portion of the total area is 5% or more and less than 10%.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

L'invention concerne un film intermédiaire pour verre feuilleté avec lequel il est possible d'améliorer la capacité de liaison au moment de la préparation du verre feuilleté, la rigidité à la flexion du verre feuilleté à des températures élevées et les propriétés d'isolation sonore du verre feuilleté. Ce film intermédiaire pour verre feuilleté est un film intermédiaire de verre feuilleté ayant une structure comprenant une ou plusieurs couches, et comprend une résine d'acétal de polyvinyle et une seconde résine autre que la résine d'acétal de polyvinyle. La température de transition vitreuse Tg d'un composant provenant de la résine d'acétal de polyvinyle incluse dans le film intermédiaire est égale ou supérieure à 80 °C, le module d'élasticité de glissement G' à 70 °C est de 5 MPa à 500 MPa, et le rapport B/A de la valeur B obtenue à partir de l'expression (log (G'(Tg -5 °C))-log (G' (Tg)))/5 à la valeur A obtenue à partir de l'expression (log (G'(Tg -20 °C))-log (G'(Tg -10 °C)))/10 est égal ou supérieur à 3.
PCT/JP2018/013324 2017-03-31 2018-03-29 Film intermédiaire pour verre feuilleté, et verre feuilleté WO2018181747A1 (fr)

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WO2021215455A1 (fr) * 2020-04-21 2021-10-28 積水化学工業株式会社 Film intercouche pour verre feuilleté et verre feuilleté
CN115991919A (zh) * 2021-10-18 2023-04-21 长春石油化学股份有限公司 聚合物膜及其应用

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WO2015046583A1 (fr) * 2013-09-30 2015-04-02 積水化学工業株式会社 Film intermédiaire pour verre feuilleté, et verre feuilleté
WO2016039477A1 (fr) * 2014-09-12 2016-03-17 積水化学工業株式会社 Couche intermédiaire pour verre feuilleté et verre feuilleté
WO2016158696A1 (fr) * 2015-03-31 2016-10-06 積水化学工業株式会社 Film intermédiaire pour verre feuilleté et verre feuilleté

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CA2957870C (fr) * 2014-09-23 2018-10-23 Fmb Feinwerk- Und Messtechnik Gmbh Systeme de reglage pour aligner des elements optiques ou des echantillons sous vide

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WO2015046583A1 (fr) * 2013-09-30 2015-04-02 積水化学工業株式会社 Film intermédiaire pour verre feuilleté, et verre feuilleté
WO2016039477A1 (fr) * 2014-09-12 2016-03-17 積水化学工業株式会社 Couche intermédiaire pour verre feuilleté et verre feuilleté
WO2016158696A1 (fr) * 2015-03-31 2016-10-06 積水化学工業株式会社 Film intermédiaire pour verre feuilleté et verre feuilleté

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021215455A1 (fr) * 2020-04-21 2021-10-28 積水化学工業株式会社 Film intercouche pour verre feuilleté et verre feuilleté
CN115427368A (zh) * 2020-04-21 2022-12-02 积水化学工业株式会社 夹层玻璃用中间膜、和夹层玻璃
CN115991919A (zh) * 2021-10-18 2023-04-21 长春石油化学股份有限公司 聚合物膜及其应用

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