Silica-soda-lime glass compositions and their applications
US6063718A · kind A · utility
22Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Jan 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2217/49264
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a glass composition intended for the manufacture of thermally stable substrates or panes, which comprises the following constituents in the following proportions by weight: ______________________________________ SiO.sub.2 55-70% Al.sub.2 O.sub.3 0-5% or 5-10% ZrO.sub.2 5-10% or 0-5% B.sub.2 O.sub.3 0-3% Na.sub.2 O 2-6% K.sub.2 O 5-11% MgO 0-6% CaO 2-11% SrO 4-12% BaO 0-2% ______________________________________ with the following relationships: PA1 Na.sub.2 O+K.sub.2 O.gtoreq.8% PA1 MgO+CaO+SrO+BaO>10% the said composition having a strain point which is in excess of 600.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.