Synthetic silica glass powder

Details Synthetic silica glass powder Synthetic silica glass powder

1995-07-10

1997-02-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 54, C03C 306

Patent

active

056041632

ABSTRACT:
A synthetic silica glass powder obtained by calcining a silica gel powder obtained by hydrolysis of a tetraalkoxysilane, said synthetic silica glass powder containing from 1.times.10.sup.-1 to 1.times.10.sup.-4 ppm of boron and having an internal silanol group concentration of at most 150 ppm and an isolated silanol group concentration of at most 5 ppm.

REFERENCES:
patent: 4883521 (1989-11-01), Shimizu et al.
patent: 4979973 (1990-12-01), Takita et al.
patent: 5063181 (1991-11-01), Takita et al.
patent: 5114881 (1992-05-01), Kaneko et al.
patent: 5141786 (1992-08-01), Shimizu et al.
patent: 5211733 (1993-05-01), Fukao et al.
patent: 5302556 (1994-04-01), Shimizu et al.
Database WPI, Derwent Publications, AN-89 320713, JP-A-01 239082, Sep. 25, 1989.
Database WPI, Derwent Publications, AN-78 81142a, JP-A-53 113817, Oct. 4, 1978.

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