Cerammable mineral glass, glass-ceramic articles and preparation thereof
US7071131B2 · kind B2 · utility
1Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2003 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C10/0027
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to novel mineral glasses which are cerammable and which have a composition, expressed in percentages by weight of oxides, consisting essentially of: SiO2 65–70; Al2O3 18–20.5; Li2O 2.5–3.8; MgO 0.55–1.5; ZnO 1.2–2.8; BaO 0–1.4; SrO 0–1.4; with BaO+SrO 0.4–1.4; with MgO+BaO+SrO 1.1–2.3; Na2O 0–<1; K2O 0–<1; with Na2O+K2O 0–<1;TiO2 1.8–3.5; ZrO2 0.8–2.5;and, optionally, an effective, non-excess amount of at least one fining agent. The present invention also relates to glass-ceramic articles made from such glass as well as processes for making such glass-ceramic articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.