Process for producing synthetic quartz glass powder

Details Process for producing synthetic quartz glass powder Process for producing synthetic quartz glass powder

1994-06-14

1996-05-14

Lacey, David L.

Glass manufacturing

Processes

Sol-gel or liquid phase route utilized

65 331, 65440, C03B 800

Patent

active

055163505

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.

REFERENCES:
patent: 4625001 (1986-11-01), Tsubakimoto et al.
patent: 4853198 (1989-08-01), Orii et al.
patent: 4865829 (1989-09-01), Hattori et al.
Derwent Section Ch, Week 9309, Class L Abstract JP5017122 (Shinetsu Chemical) Jan. 1993.
Patent Abstracts of Japan vol. 14, No. 456 (C-765) Oct. 1990 JP2180723.

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