INTERMEDIATE FILM FOR LAMINATED GLASS AND LAMINATED GLASS

PROBLEM TO BE SOLVED: To provide an intermediate film for a laminated glass that is suitable for the production of a laminated glass having excellent basic performance such as transparency, weatherability and the like, having excellent heat shielding property and scarcely causing whitening in the pe...

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Bibliographische Detailangaben
Hauptverfasser: OBATA MASATOSHI, AOSHIMA YOSHIO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide an intermediate film for a laminated glass that is suitable for the production of a laminated glass having excellent basic performance such as transparency, weatherability and the like, having excellent heat shielding property and scarcely causing whitening in the peripheral part of the laminated glass even in an atmosphere of high humidity and to provide a laminated glass using the intermediate film for a laminated glass.SOLUTION: The intermediate film for a laminated glass comprises a plasticized polyvinyl acetal resin. When the intermediate film is used to produce a laminated glass, the laminated glass has a visible light transmittance Tv at a wavelength of 380-780 nm of not less than 75%, a solar radiation transmittance Ts at a wavelength of 340-1,800 nm of not more than 60%, a haze H of not more than 1.0% and an electromagnetic wave shielding performance dB at 10-2,000 MHz of not more than 10 dB. When the intermediate film is placed under the environment of 80°C and a relative humidity of 95% for two weeks, the distance of whitening from an edge of the laminated glass is not less than 7 mm.