Invention Grant

Laminated glass
Abstract:
Provided is a laminated glass where multiple glass sheets are joined via an interlayer film [J], wherein i) mean density of the laminated glass is 1.2-1.5 g/cm3 at 25° C., ii) the interlayer film [J] has layered structure comprising at least two adhesive layers [G], comprising an adhesive mainly containing a thermoplastic elastomer having an alkoxysilyl group [F]; and at least one rigid resin layer [H] positioned therebetween, iii) storage modulus of the rigid resin layer [H] is higher than that of the adhesive layer [G], iv) storage modulus of the interlayer film [J] calculated from a formula 1 or measured is 2.0×108-1.0×109 Pa at −20° C. and 1.0×108-8.0×108 Pa at 40° C., G′=(Σiti)/(Σi(ti/G′i))  (1) where G′: calculated storage modulus of the interlayer film, G′i: storage modulus of an i-th layer of the interlayer film, ti: thickness of the i-th layer, Σi: sum of numerical values of the i-th layer.
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