β-quartz and/or β-spodumene glass ceramic
US7473660B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2006 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Feb 25, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C1/004
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present application discloses: (i) novel glass-ceramic materials containing a solid solution of b-quartz or of β-spodumene as main crystalline phase(s); (ii) articles made from said novel glass-ceramic materials; (iii) lithium alumino-silicate glasses, precursors of such novel glass-ceramic materials; and (iv) methods for preparing the aforesaid novel glass-ceramic materials and the aforesaid articles made of said novel glass-ceramic materials. The present invention relates to the use of SnO2 (0.15 to 0.3% by weight) and CeO2 and/or MnO2 (0.7 to 1.5% by weight), as an agent for fining the glass-ceramic material glass precursor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.