Invention Grant
- Patent Title: Non-alkali glass and method for producing same
- Patent Title (中): 无碱玻璃及其制造方法
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Application No.: US14943459Application Date: 2015-11-17
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Publication No.: US09540273B2Publication Date: 2017-01-10
- Inventor: Hirofumi Tokunaga , Tomoyuki Tsujimura , Manabu Nishizawa , Akio Koike
- Applicant: ASAHI GLASS COMPANY, LIMITED
- Applicant Address: JP Chiyoda-ku
- Assignee: ASAHI GLASS COMPANY, LIMITED
- Current Assignee: ASAHI GLASS COMPANY, LIMITED
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-103147 20120427
- Main IPC: C03C3/091
- IPC: C03C3/091 ; C03C3/093 ; C03C3/087

Abstract:
The present invention relates to a non-alkali glass having a strain point of from 710° C. to lower than 725° C., an average thermal expansion coefficient at from 50 to 300° C. of from 30×10−7 to 43×10−7/° C., a temperature T2 at which glass viscosity reaches 102 dPa·s of 1710° C. or lower, a temperature T4 at which the glass viscosity reaches 104 dPa·s of 1320° C. or lower, and containing, indicated by mol % on the basis of oxides, SiO2 66 to 70, Al2O3 12 to 14, B2O3 exceeding 0 to 1.5, MgO exceeding 9.5 to 13 (or 5 to 9.5), CaO 4 to 9 (or 4 to 11), SrO 0.5 to 4.5, BaO 0 to 0.5 and ZrO 0 to 2.
Public/Granted literature
- US20160068427A1 NON-ALKALI GLASS AND METHOD FOR PRODUCING SAME Public/Granted day:2016-03-10
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