Porous glass and process for its production

Details Porous glass and process for its production Porous glass and process for its production

1989-08-15

1990-12-18

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 55, 501 54, C03C 1100, C03C 1010

Patent

active

049786415

ABSTRACT:
Porous glass consisting essentially of silica, zicronia and an alkali metal compound, wherein the content of zirconia is at least 5% by weight and the content of the alkali metal compound is at least 2% by weight as calculated as M.sub.2 O wherein M is an alkali metal element, and the total pore volume (A) of pores having pore radii of from 20 to 10,000 .ANG. is at least 0.2 ml/g. and the proportion of the pore volume (B) of pores having pore radii of from 100 to 10,000 .ANG. to the total pore volume (A) of pores having pore radii of from 20 to 10,000 .ANG. is at least 80%.

REFERENCES:
patent: 3972721 (1976-08-01), Hammel et al.
patent: 4778777 (1988-10-01), Eguchi et al.

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