Sekisui Chemical Co., Ltd.

Kohei Kani

Tatsuya Iwamoto

Michio Shimamoto

Sinyul Yang

Shota Matsuda

Nami Minakuchi

Yuuma Takeda

Etsurou Hirota

Jun Sasaki

Ryousuke Komatsu

Shogo Yoshida

An interlayer film for laminated glass has enhanced sound insulating properties at 30&#xb0; C., and includes first and second layers each containing a thermoplastic resin and a plasticizer. When an absolute value of a difference in cloud point using the thermoplastic resin and plasticizer in each of the first and second layers is Xa, and a content in parts by weight of the entire plasticizer in the interlayer film relative to 100 parts by weight of the entire thermoplastic resin in the interlayer film Z, the interlayer film satisfies the first constitution: 'Xa&#x2264;115 and Z&#x2264;&#x2212;0.16Xa+59' and/or the second constitution: 'the thermoplastic resin in the first layer is polyvinyl acetal resin, and when the acetylation degree on a mole percent basis of the polyvinyl acetal resin in the first layer is represented by Y, Y&#x2265;2 and Z&#x2264;&#x2212;0.16Xa&#x2212;0.2Y+59'.

Interlayer for laminated glass, and laminated glass

The present invention provides an intermediate film for laminated glass which can improve sound insulation. The intermediate film has a layered structure including at least two layers, comprising: a first layer containing a polyvinyl acetal resin and a plasticizer; and a second layer positioned on a first surface of the first layer. In a phase diagram of three values including a degree of acetalization, a degree of acetylation, and a hydroxyl group content of the polyvinyl acetal resin contained in the first layer, the values of the degree of acetalization, the degree of acetylation, and the hydroxyl group content each fall within a region surrounded by a line including four straight lines connecting first, second, third, and fourth coordinates, which respectively have a degree of acetalization:degree of acetylation:hydroxyl group content of 70 mol %:30 mol %:0 mol %, 34 mol %:30 mol %:36 mol %, 94 mol %:0 mol %:6 mol %, and 100 mol %:0 mol %:0 mol %.

Laminated glass intermediate film and laminated glass

An interlayer film for a laminated glass includes a thermoplastic resin and a plasticizer. The ratio of a high molecular weight component with an absolute molecular weight of 1000000 or more in the thermoplastic resin is 7.4% or higher, or the ratio of a high molecular weight component with a polystyrene-equivalent molecular weight of 1000000 or more in the thermoplastic resin is 9% or higher. A first multilayer interlayer film for a laminated glass includes an interlayer film for a laminated glass and an interlayer film for a laminated glass that contains a thermoplastic resin and a plasticizer, and is laminated on one face of the interlayer film for a laminated glass.

Intermediate film for laminated glass, multilayer intermediate film for laminated glass, and laminated glass

The present invention aims to provide an intermediate film for laminated glass which, in the case of being used for constituting a laminated glass, enables to improve the sound-insulating property of the obtained laminated glass, and a laminated glass. The intermediate filmfor laminated glass of the present invention comprises a first layerwhich contains a polyvinyl acetal resin and a plasticizer, and the polyvinyl acetal resin and the first plasticizer are a polyvinyl acetal resin and a first plasticizer which have a cloud point of 5&#xb0; C. or lower when the cloud point is measured using a solution prepared by dissolving 8 parts by weight of the polyvinyl acetal resin in 100 parts by weight of the first plasticizer; and the laminated glassof the present invention comprises first and second components for laminated glass, and the intermediate filmfor laminated glass sandwiched between the first and second components for laminated glass.

Laminated glass interlayer and laminated glass

The present invention aims to provide an intermediate film for laminated glass which, in the case of being used for constituting a laminated glass, enables to improve the sound-insulating property of a laminated glass to be obtained; and a laminated glass. The intermediate filmfor laminated glass of the present invention comprises a first layerwhich contains a polyvinyl acetal resin and a plasticizer and the degree of acetylation of the polyvinyl acetal resin contained in the first layerexceeds 30 mol %; and The laminated glass of the present invention comprises first and second components for laminated glass, and the intermediate filmfor laminated glass sandwiched between the first and second components for laminated glass.

Interlayer for laminated glass and laminated glass

An interlayer film for a laminated glass includes a thermoplastic resin and a plasticizer. The ratio of a high molecular weight component with an absolute molecular weight of 1000000 or more in the thermoplastic resin is 7.4% or higher, or the ratio of a high molecular weight component with a polystyrene-equivalent molecular weight of 1000000 or more in the thermoplastic resin is 9% or higher. A first multilayer interlayer for a laminated glass includes an interlayer film for a laminated glass and an interlayer film for a laminated glass that contains it thermoplastic resin and a plasticizer, and is laminated on one face of the interlayer film for a laminated glass.

The present invention aims to provide an intermediate film for laminated glass which, in the case of being used for constituting a laminated glass, enables to improve the sound-insulating property in a high frequency range of the obtained laminated glass over a wide range of temperature; and a laminated glass. The intermediate filmfor laminated glass of the present invention comprises a first layerand a second layerwhich is laminated on a first surfaceof the first layer, each of the first and second layersandcontains a polyvinyl acetal resin and a plasticizer, the absolute value of the difference between SP values of the polyvinyl acetal resin and the plasticizer contained in the first layeris 0.5 or smaller, and the laminated glass of the present invention comprises first and second components for laminated glass and the intermediate layersandwiched between the first and second components for laminated glass.

Intermediate film for laminated glass and laminated glass

The present invention provides an interlayer film for laminated glass having a monolayer structure comprising only a first layer or a multilayer structure comprising at least two layers including a first layer and a second layer stacked at least on one face of the first layer, wherein the first layer contains a thermoplastic resin and a first plasticizer represented by the formula (1): 

The present invention provides an interlayer film for a laminated glass capable of suppressing bubble formation and bubble growth even if the laminated glass is exposed to relatively high temperatures for a long time. An interlayer film for a laminated glass according to the present invention includes a first layer and a second layer laminated on one face of the first layer, each of the first layer and the second layer contains a polyvinyl acetal resin and a plasticizer, and in the case of measuring the viscoelasticity of the first layer as a resin film (glass transition temperature: Tg(&#xb0; C.)), or the viscoelasticity of a resin film (glass transition temperature: Tg(&#xb0; C.)) containing 100 parts by weight the polyvinyl acetal resin in the first layer and 60 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) as a plasticizer, the resin film has an elastic modulus of G'(Tg+170) at (Tg+170)&#xb0; C. and an elastic modulus of G&#x2032;(Tg+30) at (Tg+30)&#xb0; C., and provides a ratio (G&#x2032;(Tg+170)/G&#x2032;(Tg+30)) of 0.18 or higher.

The present invention provides an interlayer film for a laminated glass which can suppress bubble formation and bubble growth in the laminated glass. An interlayer filmfor a laminated glass includes a first layerand a second layerlaminated on one faceof the first layer. Each of the first layerand the second layercontains a polyvinyl acetal resin and a plasticizer. The polyvinyl acetal resin in the first layeris obtained by acetalizing a polyvinyl alcohol resin that has a degree of polymerization exceeding 3000.

The present invention provides an interlayer film for a laminated glass which can suppress bubble formation and bubble growth in the laminated glass. An interlayer filmfor a laminated glass includes a first layerand a second layerlaminated on one faceof the first layer. Each of the first layerand the second layercontains a polyvinyl acetal resin and a plasticizer. In the case of measuring viscoelasticity of a resin film (glass transition temperature: Tg (&#xb0; C.)) formed from the first layeror a resin film (glass transition temperature: Tg (&#xb0; C.)) formed with 100 parts by weight of the polyvinyl acetal resin contained in the first layerand 60 parts by weight of a plasticizer of triethylene glycol di-2-ethylhexanoate (3GO), the resin film has an elastic modulus of G'(Tg+80) at (Tg+80)&#xb0; C. and an elastic modulus of G&#x2032;(Tg+30) at (Tg+30)&#xb0; C., and provides a ratio (G&#x2032;(Tg+80)/G&#x2032;(Tg+30)) of 0.65 or higher.

An interlayer film for a laminated glass includes a first layer, a second layer laminated on one face of the first layer. Each of the first layer and the second layer contains a polyvinyl acetal resin and a plasticizer. The hydroxyl content of the polyvinyl acetal resin in the first layer is lower than the hydroxyl content of the polyvinyl acetal resin in the second layer. The difference between the hydroxyl content of the polyvinyl acetal resin in the first layer and the hydroxyl content of the polyvinyl acetal resin in the second layer is at most 9.2 mol %. If the difference in the content is higher than 8.5 mol % and at most 9.2 mol %, a degree of acetylation of the polyvinyl acetal resin of the polyvinyl acetal resin in the first layer is at most 8 mol %.

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Kouka, Japan

Kohei Kani