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1. (WO2018181758) INTERLAYER FOR LAMINATED GLASS, AND LAMINATED GLASS

Pub. No.:    WO/2018/181758    International Application No.:    PCT/JP2018/013339
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 30 01:59:59 CEST 2018
IPC: C03C 27/12
B32B 17/10
B32B 27/30
C08L 29/14
C08L 33/00
Applicants: SEKISUI CHEMICAL CO., LTD.
積水化学工業株式会社
Inventors: OOHIGASHI, Yuji
大東 裕司
SHINDO, Kaoru
進藤 郁
Title: INTERLAYER FOR LAMINATED GLASS, AND LAMINATED GLASS
Abstract:
Provided is an interlayer for laminated glass with which it is possible to improve the flexural rigidity of laminated glass over a wide range of temperatures, while improving the piercing resistance of laminated glass. This interlayer for laminated glass contains polyvinyl acetal resin and a second resin other than polyvinyl acetal resin, has a phase separation structure, and in an exponential curve fit which plots, as a log-log graph, the relation of complex viscosity at a frequency of 0.1-500 sec-1 at a temperature of 160°C with frequency as the x axis and complex viscosity as the y axis, the a in y=bxa falls within the range of -1 to -0.7 inclusive, the coefficient of determination R2 is 0.99 or higher, complex viscosity at a frequency of 100 sec-1 at a temperature of 160°C falls within the range of 900 Pa·s to 4500 Pa·s inclusive, and the glass transition temperature of components derived from the second resin is at least 30°C lower than the glass transition temperature of components derived from the polyvinyl acetal resin contained in the interlayer.