Glass composition and process for producing glass composition
US7786035B2 · kind B2 · utility
8Cited by
2References
23Claims
0Family size
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Key dates
| Filing date | Aug 4, 2006 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Aug 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1333
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.