JP2011068536A - Intermediate film for laminated glass and laminated glass - Google Patents
Intermediate film for laminated glass and laminated glass Download PDFInfo
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- JP2011068536A JP2011068536A JP2009222934A JP2009222934A JP2011068536A JP 2011068536 A JP2011068536 A JP 2011068536A JP 2009222934 A JP2009222934 A JP 2009222934A JP 2009222934 A JP2009222934 A JP 2009222934A JP 2011068536 A JP2011068536 A JP 2011068536A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B17/10605—Type of plasticiser
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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
- B32B17/10688—Adjustment of the adherence to the glass layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/092—Polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- 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
Abstract
Description
本発明は、接着力調整剤として金属塩を用いることなくガラス板に対する接着力を調整して、高い耐貫通性を発揮できる合わせガラス用中間膜に関する。また、該合わせガラス用中間膜を用いてなる合わせガラスに関する。 The present invention relates to an interlayer film for laminated glass that can exhibit high penetration resistance by adjusting the adhesive strength to a glass plate without using a metal salt as an adhesive strength modifier. Further, the present invention relates to a laminated glass using the interlayer film for laminated glass.
合わせガラスは、外部衝撃を受けて破損してもガラスの破片が飛散することが少なく安全である。そのため、合わせガラスは、自動車や鉄道等の車両、航空機、建築物等の窓ガラス等として広く使用されている。例えば、合わせガラスとして、一対のガラス間に、ポリビニルブチラール樹脂と可塑剤とを含有する合わせガラス用中間膜を介在させ、一体化させた合わせガラスが挙げられる。 Laminated glass is safe because it does not scatter glass fragments even if it is damaged by an external impact. Therefore, laminated glass is widely used as a window glass for vehicles such as automobiles and railways, aircraft, buildings, and the like. For example, laminated glass includes laminated glass in which a laminated glass intermediate film containing a polyvinyl butyral resin and a plasticizer is interposed between a pair of glasses and integrated.
合わせガラスに求められる主要な性能として耐貫通性が挙げられる。耐貫通性は、ガラス板と合わせガラス用中間膜との接着力が適当な範囲である場合に発揮される。しかし、通常、ガラス板と合わせガラス用中間膜との接着力は高すぎることから、そのままでは優れた耐貫通性を発揮することができない。そこで従来の合わせガラス用中間膜では、接着力調整剤として、アルカリ金属、アルカリ土類金属、マグネシウム等の金属の金属塩を添加してガラス板との接着力を調整していた。 Penetration resistance is mentioned as the main performance required for laminated glass. The penetration resistance is exhibited when the adhesive force between the glass plate and the interlayer film for laminated glass is in an appropriate range. However, since the adhesive force between the glass plate and the interlayer film for laminated glass is usually too high, excellent penetration resistance cannot be exhibited as it is. Therefore, in the conventional interlayer film for laminated glass, a metal salt of a metal such as an alkali metal, an alkaline earth metal, or magnesium is added as an adhesive force adjusting agent to adjust the adhesive force with the glass plate.
しかし、接着力調整剤として金属塩を添加した合わせガラス用中間膜は、耐湿性に劣り、吸湿したときに白化してヘイズが上昇するという問題があった。
特許文献１には、合わせガラス用中間膜中に含まれるアルカリ金属イオンの濃度を一定以下にすることにより白化を防止することが記載されている。しかしながら、特許文献１に記載された方法では、高い耐貫通性と白化の防止とを両立することは困難であった。
However, the interlayer film for laminated glass to which a metal salt is added as an adhesive force adjusting agent is inferior in moisture resistance, and has a problem that whitening occurs when moisture is absorbed and haze increases.
Patent Document 1 describes that whitening is prevented by setting the concentration of alkali metal ions contained in the interlayer film for laminated glass to a certain level or less. However, with the method described in Patent Document 1, it is difficult to achieve both high penetration resistance and prevention of whitening.
本発明は、金属塩からなる接着力調整剤を用いることなくガラス板に対する接着力を調整して、高い耐貫通性を発揮できる合わせガラス用中間膜を提供することを目的とする。また、該合わせガラス用中間膜を用いてなる合わせガラスを提供することを目的とする。 An object of this invention is to provide the intermediate film for laminated glasses which can adjust the adhesive force with respect to a glass plate, without using the adhesive force regulator which consists of metal salts, and can exhibit high penetration resistance. Moreover, it aims at providing the laminated glass which uses this intermediate film for laminated glasses.
本発明は、ポリビニルアセタール樹脂１００重量部に対して、下記一般式（１）で表されるフェニルグリコール化合物１〜５０重量部、及び、下記一般式（２）で表されるジエステル化合物５〜５０重量部を含有し、下記一般式（１）で表されるフェニルグリコール化合物と下記一般式（２）で表されるジエステル化合物との合計が３５〜７５重量部である合わせガラス用中間膜である。 In the present invention, 1 to 50 parts by weight of a phenyl glycol compound represented by the following general formula (1) and 5 to 50 diester compounds represented by the following general formula (2) with respect to 100 parts by weight of the polyvinyl acetal resin. It is an interlayer film for laminated glass that contains 35 parts by weight of the total amount of the phenyl glycol compound represented by the following general formula (1) and the diester compound represented by the following general formula (2). .
式（１）中、Ｒはフェニル基を表し、ｎは１〜１０を表す。 In formula (1), R represents a phenyl group and n represents 1-10.
式（２）中、Ｒ１及びＲ２は炭素数５〜１０の有機基を表し、Ｒ３は、−ＣＨ２−ＣＨ２−基、−ＣＨ２−ＣＨ（ＣＨ３）−基又は−ＣＨ２−ＣＨ２−ＣＨ２−基を表し、ｎは３〜１０の範囲内の整数を表す。
以下に本発明を詳述する。
In Formula (2), R 1 and R 2 represent an organic group having 5 to 10 carbon atoms, and R 3 represents a —CH 2 —CH 2 — group, a —CH 2 —CH (CH 3 ) — group, or —CH. 2 -CH 2 -CH 2 - represents a radical, n is an integer in the range of 3-10.
The present invention is described in detail below.
本発明者は、フェニルグリコール化合物とジエステル化合物との２種類の可塑剤を組み合わせて用いることにより、接着力調整剤として金属塩を用いることなくガラス板に対する接着力を調整して、高い耐貫通性を発揮できる合わせガラス用中間膜が得られることを見出した。これは、フェニルグリコール化合物とジエステル化合物とを所定量配合することにより、ジエステル化合物のみを含有する合わせガラス用中間膜と比較して、ガラスに対する接着力を低く調整することができるためであると考えられる。 The present inventor uses a combination of two types of plasticizers, a phenyl glycol compound and a diester compound, to adjust the adhesive strength to the glass plate without using a metal salt as an adhesive strength adjusting agent, and to achieve high penetration resistance. It was found that an interlayer film for laminated glass capable of exhibiting This is considered to be because the adhesive strength to glass can be adjusted to be lower by blending a predetermined amount of the phenyl glycol compound and the diester compound as compared with the interlayer film for laminated glass containing only the diester compound. It is done.
本発明の合わせガラス用中間膜は、ポリビニルアセタール樹脂を含有する。
上記ポリビニルアセタール樹脂は、ポリビニルアルコールをアルデヒドでアセタール化して得られるポリビニルアセタール樹脂であれば特に限定されないが、ポリビニルブチラール樹脂が好適である。また、必要に応じて２種以上のポリビニルアセタール樹脂を併用してもよい。
上記ポリビニルアセタール樹脂のアセタール化度の好ましい下限は４０モル％、好ましい上限は８５モル％であり、より好ましい下限は５５モル％、より好ましい上限は８０モル％であり、更に好ましい下限は６０モル％、更に好ましい上限は７５モル％である。
The interlayer film for laminated glass of the present invention contains a polyvinyl acetal resin.
The polyvinyl acetal resin is not particularly limited as long as it is a polyvinyl acetal resin obtained by acetalizing polyvinyl alcohol with an aldehyde, but a polyvinyl butyral resin is preferable. Moreover, you may use together 2 or more types of polyvinyl acetal resin as needed.
The preferable lower limit of the degree of acetalization of the polyvinyl acetal resin is 40 mol%, the preferable upper limit is 85 mol%, the more preferable lower limit is 55 mol%, the more preferable upper limit is 80 mol%, and the more preferable lower limit is 60 mol%. A more preferred upper limit is 75 mol%.
上記ポリビニルアセタール樹脂としてポリビニルブチラール樹脂を用いる場合、水酸基量の好ましい下限は１５モル％、好ましい上限は３５モル％である。水酸基量が１５モル％未満であると、合わせガラス用中間膜とガラスとの接着性が低下することがある。水酸基量が３５モル％を超えると、得られる合わせガラス用中間膜が硬くなり過ぎることがある。 When a polyvinyl butyral resin is used as the polyvinyl acetal resin, the preferred lower limit of the amount of hydroxyl groups is 15 mol%, and the preferred upper limit is 35 mol%. When the hydroxyl group content is less than 15 mol%, the adhesion between the interlayer film for laminated glass and the glass may be lowered. When the amount of hydroxyl groups exceeds 35 mol%, the resulting interlayer film for laminated glass may become too hard.
上記ポリビニルアセタール樹脂は、ポリビニルアルコールをアルデヒドでアセタール化することにより調製することができる。
上記ポリビニルアルコールは、通常、ポリ酢酸ビニルを鹸化することにより得られ、鹸化度８０〜９９．８モル％のポリビニルアルコールが一般的に用いられる。
上記ポリビニルアルコールの重合度の好ましい下限は５００、好ましい上限は４０００である。上記ポリビニルアルコールの重合度が５００未満であると、得られる合わせガラスの耐貫通性が低下することがある。上記ポリビニルアルコールの重合度が４０００を超えると、合わせガラス用中間膜の成形が困難となることがある。上記ポリビニルアルコールの重合度のより好ましい下限は１０００、より好ましい上限は３６００である。
The polyvinyl acetal resin can be prepared by acetalizing polyvinyl alcohol with an aldehyde.
The polyvinyl alcohol is usually obtained by saponifying polyvinyl acetate, and polyvinyl alcohol having a saponification degree of 80 to 99.8 mol% is generally used.
The preferable lower limit of the polymerization degree of the polyvinyl alcohol is 500, and the preferable upper limit is 4000. When the polymerization degree of the polyvinyl alcohol is less than 500, the penetration resistance of the obtained laminated glass may be lowered. When the polymerization degree of the polyvinyl alcohol exceeds 4000, it may be difficult to mold the interlayer film for laminated glass. The minimum with a more preferable polymerization degree of the said polyvinyl alcohol is 1000, and a more preferable upper limit is 3600.
上記アルデヒドは特に限定されないが、一般には、炭素数が１〜１０のアルデヒドが好適に用いられる。上記炭素数が１〜１０のアルデヒドは特に限定されず、例えば、ｎ−ブチルアルデヒド、イソブチルアルデヒド、ｎ−バレルアルデヒド、２−エチルブチルアルデヒド、ｎ−ヘキシルアルデヒド、ｎ−オクチルアルデヒド、ｎ−ノニルアルデヒド、ｎ−デシルアルデヒド、ホルムアルデヒド、アセトアルデヒド、ベンズアルデヒド等が挙げられる。なかでも、ｎ−ブチルアルデヒド、ｎ−ヘキシルアルデヒド、ｎ−バレルアルデヒドが好ましく、ｎ−ブチルアルデヒドがより好ましい。これらのアルデヒドは単独で用いられてもよく、２種以上を併用してもよい。 The aldehyde is not particularly limited, but generally an aldehyde having 1 to 10 carbon atoms is preferably used. The aldehyde having 1 to 10 carbon atoms is not particularly limited. For example, n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, n-nonylaldehyde N-decylaldehyde, formaldehyde, acetaldehyde, benzaldehyde and the like. Of these, n-butyraldehyde, n-hexylaldehyde, and n-valeraldehyde are preferable, and n-butyraldehyde is more preferable. These aldehydes may be used alone or in combination of two or more.
本発明の合わせガラス用中間膜は、上記一般式（１）で表されるフェニルグリコール化合物を含有する。上記フェニルグリコール化合物は、可塑剤として合わせガラス用中間膜に柔軟性を付与するとともに、ガラス板に対する接着力を低下させて、耐貫通性を向上させる役割を有する。 The interlayer film for laminated glass of the present invention contains a phenyl glycol compound represented by the general formula (1). The phenyl glycol compound has a role of improving the penetration resistance by imparting flexibility to the interlayer film for laminated glass as a plasticizer and reducing the adhesive force to the glass plate.
上記一般式（１）におけるＲはフェニル基である。上記一般式（１）で表されるフェニルグリコール化合物がフェニル基を有することにより、耐貫通性に優れた合わせガラス用中間膜が得られる。 R in the general formula (1) is a phenyl group. When the phenyl glycol compound represented by the general formula (1) has a phenyl group, an interlayer film for laminated glass having excellent penetration resistance can be obtained.
上記一般式（１）におけるｎは１〜１０である。上記ｎが１０を超えると、合わせガラス用中間膜の耐湿性が低下する。なお、上記一般式（１）におけるｎは（ＯＣＨ２ＣＨ２）基の平均付加モル数を示す。上記一般式（１）で表される可塑剤は、（ＯＣＨ２ＣＨ２）基の平均付加モル数が１〜１０であればよく、付加モル数が１０を超える可塑剤が含まれていてもよい。 N in the general formula (1) is 1 to 10. When n exceeds 10, the moisture resistance of the interlayer film for laminated glass is lowered. Incidentally, n in the general formula (1) represents an average molar number of addition of (OCH 2 CH 2) group. The plasticizer represented by the general formula (1) may have an average added mole number of (OCH 2 CH 2 ) groups of 1 to 10, even if a plasticizer having an added mole number exceeding 10 is included. Good.
上記一般式（１）で表されるフェニルグリコール化合物の含有量は、ポリビニルアセタール樹脂１００重量部に対する下限が１重量部、上限が５０重量部である。上記一般式（１）で表されるフェニルグリコール化合物の含有量が１重量部未満であると、ガラス板に対する接着力が充分に低下せず、高い耐貫通性を発揮することができない。上記一般式（１）で表されるフェニルグリコール化合物の含有量が５０重量部を超えると、得られる合わせガラス用中間膜の取扱い性が低下する。上記一般式（１）で表されるフェニルグリコール化合物の含有量の好ましい下限は１．５重量部、好ましい上限は４０重量部であり、より好ましい下限は２重量部、より好ましい上限は３５重量部である。 Regarding the content of the phenyl glycol compound represented by the general formula (1), the lower limit with respect to 100 parts by weight of the polyvinyl acetal resin is 1 part by weight, and the upper limit is 50 parts by weight. When the content of the phenyl glycol compound represented by the general formula (1) is less than 1 part by weight, the adhesion to the glass plate is not sufficiently lowered, and high penetration resistance cannot be exhibited. When the content of the phenyl glycol compound represented by the general formula (1) exceeds 50 parts by weight, the handleability of the obtained interlayer film for laminated glass is lowered. The preferable lower limit of the content of the phenyl glycol compound represented by the general formula (1) is 1.5 parts by weight, the preferable upper limit is 40 parts by weight, the more preferable lower limit is 2 parts by weight, and the more preferable upper limit is 35 parts by weight. It is.
本発明の合わせガラス用中間膜は、上記一般式（２）で表されるジエステル化合物を含有する。上記一般式（１）で表されるフェニルグリコール化合物にジエステル化合物を併用することにより、得られる合わせガラス用中間膜は、接着力調整剤として金属塩を用いることなく高い耐貫通性を発揮できる。 The interlayer film for laminated glass of the present invention contains the diester compound represented by the general formula (2). By using a diester compound in combination with the phenyl glycol compound represented by the above general formula (1), the resulting interlayer film for laminated glass can exhibit high penetration resistance without using a metal salt as an adhesive force regulator.
上記一般式（２）で表されるジエステル化合物は、例えば、トリエチレングリコール−ジ−２−エチルヘキサノエート（３ＧＯ）、テトラエチレングリコール−ジ−２−エチルヘキサノエート（４ＧＯ）、トリエチレングリコール−ジ−２−エチルブチレート（３ＧＨ）、テトラエチレングリコール−ジ−２−エチルブチレート、テトラエチレングリコール−ジ−ヘプタノエート、トリエチレングリコール−ジ−ヘプタノエート、ペンタエチレングリコール−ジ−２−エチルヘキサノエート、オクタエチレングリコール−ジ−２−エチルヘキサノエート、ノナエチレングリコール−ジ−２−エチルヘキサノエート、デカエチレングリコール−ジ−２−エチルヘキサノエート、テトラエチレングリコール−ジ−ｎ−オクタノエート等が挙げられる。なかでも、トリエチレングリコール−ジ−２−エチルヘキサノエート（３ＧＯ）、テトラエチレングリコール−ジ−２−エチルヘキサノエート（４ＧＯ）が好適である。 Examples of the diester compound represented by the general formula (2) include triethylene glycol-di-2-ethylhexanoate (3GO), tetraethylene glycol-di-2-ethylhexanoate (4GO), and triethylene. Glycol-di-2-ethylbutyrate (3GH), tetraethylene glycol-di-2-ethylbutyrate, tetraethylene glycol-di-heptanoate, triethylene glycol-di-heptanoate, pentaethylene glycol-di-2-ethyl Hexanoate, octaethylene glycol-di-2-ethylhexanoate, nonaethylene glycol-di-2-ethylhexanoate, decaethylene glycol-di-2-ethylhexanoate, tetraethylene glycol-di-n -Octanoate, etc. . Of these, triethylene glycol-di-2-ethylhexanoate (3GO) and tetraethylene glycol-di-2-ethylhexanoate (4GO) are preferable.
上記一般式（２）で表されるジエステル化合物の含有量は、ポリビニルアセタール樹脂１００重量部に対する下限が５重量部、上限が５０重量部である。上記一般式（２）で表されるジエステル化合物の含有量が５重量部未満であると、合わせガラス用中間膜を押出成形法にて製造することが困難となる。上記一般式（２）で表されるジエステル化合物の含有量が５０重量部を超えると、得られる合わせガラス用中間膜の表面にジエステル化合物が染み出ることがある。上記一般式（２）で表されるジエステル化合物の含有量の好ましい下限は７重量部、好ましい上限は４５重量部であり、より好ましい下限は２０重量部、より好ましい上限は４２重量部である。 The content of the diester compound represented by the general formula (2) is such that the lower limit with respect to 100 parts by weight of the polyvinyl acetal resin is 5 parts by weight, and the upper limit is 50 parts by weight. When the content of the diester compound represented by the general formula (2) is less than 5 parts by weight, it becomes difficult to produce an interlayer film for laminated glass by an extrusion molding method. When content of the diester compound represented by the said General formula (2) exceeds 50 weight part, a diester compound may ooze out on the surface of the intermediate film for laminated glasses obtained. The minimum with preferable content of the diester compound represented by the said General formula (2) is 7 weight part, A preferable upper limit is 45 weight part, A more preferable minimum is 20 weight part, A more preferable upper limit is 42 weight part.
上記一般式（１）で表されるフェニルグリコール化合物と上記一般式（２）で表されるジエステル化合物との合計は、上記ポリビニルアセタール樹脂１００重量部に対して３５〜７５重量部である。上記一般式（１）で表されるフェニルグリコール化合物と、上記一般式（２）で表されるジエステル化合物との合計が３５〜７５重量部であることにより、本発明の合わせガラス用中間膜は高い耐貫通性を得ることができる。上記合計の好ましい下限は３７重量部、好ましい上限は７０重量部、より好ましい下限は３９重量部、より好ましい上限は６５重量部、更に好ましい下限は４１重量部、更に好ましい上限は６０重量部である。 The total of the phenyl glycol compound represented by the general formula (1) and the diester compound represented by the general formula (2) is 35 to 75 parts by weight with respect to 100 parts by weight of the polyvinyl acetal resin. When the total of the phenyl glycol compound represented by the general formula (1) and the diester compound represented by the general formula (2) is 35 to 75 parts by weight, the interlayer film for laminated glass of the present invention is High penetration resistance can be obtained. The preferred lower limit of the total is 37 parts by weight, the preferred upper limit is 70 parts by weight, the more preferred lower limit is 39 parts by weight, the more preferred upper limit is 65 parts by weight, the still more preferred lower limit is 41 parts by weight, and the still more preferred upper limit is 60 parts by weight. .
本発明の合わせガラス用中間膜は、本発明の課題の解決を阻害しない範囲で、上記フェニルグリコール化合物、ジエステル化合物以外の他の可塑剤を含んでもよい。
本発明の合わせガラス用中間膜は、紫外線吸収剤、酸化防止剤、光安定剤、帯電防止剤、顔料、染料、赤外線吸収剤等の添加剤を含有してもよい。
The interlayer film for laminated glass of the present invention may contain a plasticizer other than the phenyl glycol compound and the diester compound as long as the solution of the problem of the present invention is not inhibited.
The interlayer film for laminated glass of the present invention may contain additives such as an ultraviolet absorber, an antioxidant, a light stabilizer, an antistatic agent, a pigment, a dye, and an infrared absorber.
本発明の合わせガラス用中間膜は、接着力調整剤として、アルカリ金属、アルカリ土類金属、マグネシウム等の金属の金属塩を含有しなくても、充分に高い耐貫通性を発揮することができる。従って、接着力調整剤である金属塩に起因する白化を防止することができる。
なお、本発明の合わせガラス用中間膜は、白化を防止できる範囲において、接着力調整剤として金属塩を含有してもかまわない。
The interlayer film for laminated glass of the present invention can exhibit sufficiently high penetration resistance even if it does not contain a metal salt of a metal such as an alkali metal, an alkaline earth metal, or magnesium as an adhesion modifier. . Accordingly, it is possible to prevent whitening due to the metal salt which is an adhesive force adjusting agent.
In addition, the interlayer film for laminated glass of the present invention may contain a metal salt as an adhesive strength adjusting agent as long as whitening can be prevented.
本発明の合わせガラス用中間膜は、単層の合わせガラス用中間膜であってもよいし、２層以上の樹脂膜が積層された合わせガラス用中間膜であってもよい。また、本発明の合わせガラス用中間膜２層の間に、ポリエチレンテレフタレートフィルム、ポリエチレンナフタレートフィルム等のポリエステルフィルムを挟み込み、積層してもよい。 The interlayer film for laminated glass of the present invention may be a single-layer interlayer film for laminated glass or an interlayer film for laminated glass in which two or more resin films are laminated. Further, a polyester film such as a polyethylene terephthalate film or a polyethylene naphthalate film may be sandwiched and laminated between two layers of the interlayer film for laminated glass of the present invention.
本発明の合わせガラス用中間膜の厚さは特に限定されないが、好ましい下限は０．３ｍｍ、好ましい上限は１．５ｍｍである。本発明の合わせガラス用中間膜の厚さが０．３ｍｍ未満であると、合わせガラス用中間膜の耐貫通性が低下することがある。本発明の合わせガラス用中間膜の厚さが１．５ｍｍを超えると、合わせガラスに適した厚みを超えてしまうことがある。本発明の合わせガラス用中間膜の厚さのより好ましい下限は０．７ｍｍ、より好ましい上限は１．３５ｍｍである。 The thickness of the interlayer film for laminated glass of the present invention is not particularly limited, but a preferable lower limit is 0.3 mm and a preferable upper limit is 1.5 mm. When the thickness of the interlayer film for laminated glass of the present invention is less than 0.3 mm, the penetration resistance of the interlayer film for laminated glass may be lowered. When the thickness of the interlayer film for laminated glass of the present invention exceeds 1.5 mm, the thickness suitable for laminated glass may be exceeded. The more preferable lower limit of the thickness of the interlayer film for laminated glass of the present invention is 0.7 mm, and the more preferable upper limit is 1.35 mm.
本発明の合わせガラス用中間膜を製造する方法は特に限定されず、例えば、上記ポリビニルアセタール樹脂とフェニルグリコール化合物、ジエステル化合物、任意成分である添加剤とを混練した後、合わせガラス用中間膜を成形する方法等が挙げられる。上記混練の方法は特に限定されず、例えば、押出機、プラストグラフ、ニーダー、バンバリーミキサー、カレンダーロール等を用いる方法等が挙げられる。 The method for producing the interlayer film for laminated glass of the present invention is not particularly limited. For example, after kneading the polyvinyl acetal resin, the phenyl glycol compound, the diester compound, and the additive which is an optional component, the interlayer film for laminated glass is formed. Examples of the method include molding. The kneading method is not particularly limited, and examples thereof include a method using an extruder, a plastograph, a kneader, a Banbury mixer, a calendar roll, and the like.
本発明の合わせガラス用中間膜を用いてなる合わせガラスもまた、本発明の１つである。
本発明の合わせガラスに用いられるガラス板は特に限定されず、一般に使用されている透明板ガラスが挙げられる。上記透明板ガラスは、例えば、フロート板ガラス、磨き板ガラス、型板ガラス、網入りガラス、線入り板ガラス、着色された板ガラス、熱線吸収ガラス、熱線反射ガラス、グリーンガラス等の無機ガラスが挙げられる。また、ポリカーボネートやポリアクリレート等の有機プラスチックス板を用いることもできる。
Laminated glass using the interlayer film for laminated glass of the present invention is also one aspect of the present invention.
The glass plate used for the laminated glass of this invention is not specifically limited, The transparent plate glass generally used is mentioned. Examples of the transparent plate glass include inorganic glass such as float plate glass, polished plate glass, mold plate glass, netted glass, wire-containing plate glass, colored plate glass, heat ray absorbing glass, heat ray reflecting glass, and green glass. Moreover, organic plastics boards, such as a polycarbonate and a polyacrylate, can also be used.
上記ガラス板は、２種以上のガラス板を用いてもよい。例えば、無機ガラスと、有機プラスチックス板との間に、本発明の合わせガラス用中間膜が挟み込まれた合わせガラス等が挙げられる。
上記合わせガラスの製造方法は特に限定されず、従来公知の製造方法を用いることができる。
Two or more glass plates may be used as the glass plate. For example, a laminated glass in which the interlayer film for laminated glass of the present invention is sandwiched between an inorganic glass and an organic plastics plate can be used.
The manufacturing method of the said laminated glass is not specifically limited, A conventionally well-known manufacturing method can be used.
本発明によれば、接着力調整剤として金属塩を用いることなくガラス板に対する接着力を調整して、高い耐貫通性を発揮できる合わせガラス用中間膜を提供することができる。また、該合わせガラス用中間膜を用いてなる合わせガラスを提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the intermediate film for laminated glasses which can adjust the adhesive force with respect to a glass plate without using metal salt as an adhesive force regulator, and can exhibit high penetration resistance can be provided. Moreover, the laminated glass which uses this intermediate film for laminated glasses can be provided.
以下に実施例を挙げて本発明の態様を更に詳しく説明するが、本発明はこれら実施例にのみ限定されるものではない。 Hereinafter, embodiments of the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.
（実施例１）
（１）合わせガラス用中間膜の作製
上記一般式（１）におけるＲがフェニル基であり、平均付加モル数ｎが４であるフェニルグリコール化合物５重量部と、上記一般式（２）で表されるジエステル化合物としてトリエチレングリコール−ジ−２−エチルヘキサノエート（３ＧＯ）３９重量部とを８０℃で３０分間攪拌し、可塑剤溶液を作製した。
次いで、ポリビニルブチラール樹脂（平均重合度１７００、ブチラール化度６８．５モル％、アセチル化度０．９モル％、水酸基含有率３０．６モル％）１００重量部に上記可塑剤溶液の全量を加えて充分に混合した後、押出機を用いて膜厚が１．２５ｍｍとなるように押出成形して合わせガラス用中間膜を作製した。
得られた合わせガラス用中間膜を２３℃、相対湿度２５％の恒温恒湿の条件下で２４時間静置した。
Example 1
(1) Production of interlayer film for laminated glass R in the above general formula (1) is a phenyl group, 5 parts by weight of a phenyl glycol compound having an average addition mole number n of 4, and the above general formula (2) As a diester compound, 39 parts by weight of triethylene glycol-di-2-ethylhexanoate (3GO) was stirred at 80 ° C. for 30 minutes to prepare a plasticizer solution.
Next, the total amount of the plasticizer solution was added to 100 parts by weight of polyvinyl butyral resin (average polymerization degree 1700, butyralization degree 68.5 mol%, acetylation degree 0.9 mol%, hydroxyl group content 30.6 mol%). After thoroughly mixing, an intermediate film for laminated glass was produced by extrusion using an extruder so that the film thickness was 1.25 mm.
The obtained interlayer film for laminated glass was allowed to stand for 24 hours under conditions of constant temperature and humidity of 23 ° C. and a relative humidity of 25%.
（２）合わせガラスの作製
得られた合わせガラス用中間膜を２枚の透明なフロートガラス（縦３０ｃｍ×横３０ｃｍ×厚さ２．３ｍｍ）で挟み込み積層体とした。得られた積層体を、２３０℃の加熱ロールを用いて仮圧着させた。仮圧着された合わせガラスを、オートクレーブを用いて１３５℃、圧力１．２ＭＰａの条件で２０分間圧着し、合わせガラスを作製した。
(2) Production of laminated glass The obtained interlayer film for laminated glass was sandwiched between two transparent float glasses (length 30 cm × width 30 cm × thickness 2.3 mm) to form a laminated body. The obtained laminated body was temporarily pressure-bonded using a 230 ° C. heating roll. The temporarily bonded laminated glass was pressure bonded for 20 minutes under the conditions of 135 ° C. and pressure 1.2 MPa using an autoclave to produce a laminated glass.
（実施例２、比較例１、２）
可塑剤の種類と含有量とを表１に示す数値に変更した以外は、実施例１と同様にして、合わせガラス用中間膜、及び、合わせガラスを作製した。
(Example 2, Comparative Examples 1 and 2)
An interlayer film for laminated glass and laminated glass were produced in the same manner as in Example 1 except that the type and content of the plasticizer were changed to the values shown in Table 1.
＜評価＞
実施例、比較例で得られた合わせガラスついて以下の評価を行った。
結果を表１に示した。
<Evaluation>
The following evaluation was performed about the laminated glass obtained by the Example and the comparative example.
The results are shown in Table 1.
（１）耐貫通性評価
得られた合わせガラス（縦３０ｃｍ、横３０ｃｍ）を、その表面温度が２３℃となるように調整した。次いで、ＪＩＳ Ｒ ３２１２に準拠して、６ｍの高さから、合わせガラスに対して、質量２２６０ｇ、直径８２ｍｍの剛球を、合わせガラスの中心部分に落下させた。同様の評価を６枚の合わせガラスについて行い、６枚の合わせガラス全てについて、剛球が衝突した後５秒以内に剛球が貫通しなかった場合を合格とした。剛球が衝突した後５秒以内に剛球が貫通しなかった合わせガラスが３枚以下であった場合は不合格とした。剛球が衝突した後５秒以内に剛球が貫通しなかった合わせガラスが４枚の場合には、新しく６枚の合わせガラスについて再度の耐貫通性評価を行った。剛球が衝突した後５秒以内に剛球が貫通しなかった合わせガラスが５枚の場合には、新しく１枚の合わせガラスを追加試験し、剛球が衝突した後５秒以内に剛球が貫通しなかった場合を合格とした。同様の方法で、７ｍの高さから、６枚の合わせガラスに対して、質量２２６０ｇ、直径８２ｍｍの剛球を、合わせガラスの中心部分に落下させ、耐貫通性評価を行った。
(1) Penetration resistance evaluation The obtained laminated glass (length 30 cm, width 30 cm) was adjusted so that the surface temperature might be set to 23 degreeC. Next, in accordance with JIS R 3212, a hard sphere having a mass of 2260 g and a diameter of 82 mm was dropped on the laminated glass from a height of 6 m on the laminated glass. The same evaluation was performed for six laminated glasses, and the case where the hard sphere did not penetrate within 5 seconds after the hard sphere collided was regarded as acceptable for all the six laminated glasses. If the number of laminated glasses in which the hard sphere did not penetrate within 5 seconds after the collision of the hard sphere was 3 or less, it was rejected. When the number of the laminated glasses that did not penetrate the hard sphere within 5 seconds after the collision of the hard spheres, the penetration resistance evaluation was again performed on the 6 laminated glasses. If there are 5 laminated glasses that did not penetrate the hard sphere within 5 seconds after the collision of the hard sphere, add another new laminated glass, and the hard sphere will not penetrate within 5 seconds after the collision. The case was accepted. In the same manner, a rigid sphere having a mass of 2260 g and a diameter of 82 mm was dropped from the height of 7 m to the center of the laminated glass, and the penetration resistance was evaluated.
（２）合わせガラスの耐湿性評価
得られた合わせガラスを、ＪＩＳ Ｒ ３２１２に準拠して、５０℃、相対湿度９５％の恒温恒湿槽に２週間保管した。保管後の合わせガラスの周辺部の白化距離を測定した。白化距離が５ｍｍ以下であった合わせガラスを○、白化距離が５ｍｍを超え、１０ｍｍ以下であった合わせガラスを△、白化距離が１０ｍｍを超えた合わせガラスを×とした。
(2) Evaluation of moisture resistance of laminated glass The obtained laminated glass was stored in a constant temperature and humidity chamber of 50 ° C. and a relative humidity of 95% for 2 weeks in accordance with JIS R 3212. The whitening distance of the peripheral part of the laminated glass after storage was measured. A laminated glass having a whitening distance of 5 mm or less was indicated by ◯, a laminated glass having a whitening distance exceeding 5 mm and by 10 mm or less, Δ, and a laminated glass having a whitening distance exceeding 10 mm by ×.
本発明によれば、接着力調整剤として金属塩を用いることなくガラス板に対する接着力を調整して、高い耐貫通性を発揮できる合わせガラス用中間膜を提供することができる。また、該合わせガラス用中間膜を用いてなる合わせガラスを提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the intermediate film for laminated glasses which can adjust the adhesive force with respect to a glass plate without using metal salt as an adhesive force regulator, and can exhibit high penetration resistance can be provided. Moreover, the laminated glass which uses this intermediate film for laminated glasses can be provided.
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