Invention Grant
- Patent Title: Laminated glass
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Application No.: US16467164Application Date: 2017-12-15
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Publication No.: US11247538B2Publication Date: 2022-02-15
- Inventor: Ryuta Kurihara , Teiji Kohara
- Applicant: ZEON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: ZEON CORPORATION
- Current Assignee: ZEON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Kenja IP Law PC
- Priority: JPJP2016-248715 20161222
- International Application: PCT/JP2017/045201 WO 20171215
- International Announcement: WO2018/116997 WO 20180628
- Main IPC: B32B17/10
- IPC: B32B17/10 ; B60J1/00 ; B32B27/30 ; C08L53/02

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.
Public/Granted literature
- US20190315201A1 LAMINATED GLASS Public/Granted day:2019-10-17
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