Process for producing synthetic quartz glass powder
US5516350A · kind A · utility
26Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Jun 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B19/1095
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Synthetic quartz glass powder is produced by (a) hydrolyzing an alkoxysilane to form a gel, (b) finely dividing the gel and then drying, or drying the gel and then finely dividing, and (c) calcining the obtained powder, the powder being maintained under an atmosphere with an oxygen concentration of not less than 30 vol % during at least a part of the calcining period at a temperature of not lower than 1,000.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.