Sekisui Chemical Co., Ltd.

Sinyul Yang

Michio Shimamoto

Shota Matsuda

Tatsuya Iwamoto

Kohei Kani

Kozo Nakamura

Shouta Matsuda

Etsurou Hirota

An interlayer film for laminated glass that can improve a sound insulation property of an obtained laminated glass when the interlayer film for laminated glass is used for configuring the laminated glass is provided. The interlayer film for laminated glass according to the present invention includes a first layer and a second layer laminated on a first surface of the first layer. The first layer includes a polyvinyl acetate resin and a plasticizer.

Intermediate film 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

The present invention provides an interlayer film for laminated glass, that exhibits an excellent sound-insulating performance for solid-borne sound in an environment at or below 0&#xb0; C. Another object is to provide laminated glass that is obtained using this interlayer film for laminated glass. The present invention is an interlayer film for laminated glass, that has a sound-insulating layer for which a temperature T1, which is the temperature that gives the maximum value of tan &#x3b4; at a frequency of 1 Hz, is in the range from &#x2212;30&#xb0; C. to 0&#xb0; C.

Interlayer 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.

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

Provided is an interlayer for laminated glass which increases sound-insulating properties in a high frequency area in a laminate glass over a wide temperature range. An interlayer film for laminated glass of the present invention includes first, second, and third layers, wherein when a cloud point C1 is measured by using a first liquid containing 100 parts by weight of a first plasticizer and 8 parts by weight of a first polyvinyl acetal resin contained in the first layer, a cloud point C2 is measured by using a second liquid containing 100 parts by weight of a second plasticizer and 8 parts by weight of a second polyvinyl acetal resin contained in the second layer, and a cloud point C3 is measured by using a third liquid containing 100 parts by weight of a third plasticizer and 8 parts by weight of a third polyvinyl acetal resin contained in the third layer, the cloud point C1 is 10&#xb0; C. or lower; the cloud point C2 is higher than the cloud point C1 by at least 5&#xb0; C.; and the cloud point C3 is higher than the cloud point C1 by at least 50&#xb0; C. and higher than the cloud point C2.

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): 

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Osaka, Japan

Sinyul Yang