Invention Grant
- Patent Title: Low temperature moldable sheet forming glass compositions
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Application No.: US17056593Application Date: 2019-05-17
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Publication No.: US11591255B2Publication Date: 2023-02-28
- Inventor: Venkatesh Botu , Matthew John Dejneka , Nadja Teresia Lönnroth , Adama Tandia , Kochuparambil Deenamma Vargheese
- Applicant: CORNING INCORPORATED
- Applicant Address: US NY Corning
- Assignee: CORNING INCORPORATED
- Current Assignee: CORNING INCORPORATED
- Current Assignee Address: US NY Corning
- International Application: PCT/US2019/032897 WO 20190517
- International Announcement: WO2019/226485 WO 20191128
- Main IPC: C03C3/091
- IPC: C03C3/091 ; C03C3/093

Abstract:
The embodiments described herein relate to low temperature moldable sheet forming glass compositions and glass articles formed from the same. In various embodiments, the glass composition comprises from about 60 mol. % to about 67 mol. % SiO2, from about 6 mol. % to about 11 mol. % B2O3, from about 4.5 mol. % to about 11 mol. % Li2O, Al2O3, Na2O, and K2O. The glass composition also includes greater than about 2 mol. % RO, where RO are divalent metal oxides, and R2O from about 14 mol. % to about 20 mol. %, where R2O are alkali metal oxides. The glass composition also has a glass transition temperature Tg of less than about 500 C, a softening point of less than about 650 C, and a coefficient of thermal expansion (CTE) of less than about 85×10−7 K−1.
Public/Granted literature
- US20210221731A1 LOW TEMPERATURE MOLDABLE SHEET FORMING GLASS COMPOSITIONS Public/Granted day:2021-07-22
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