Method of strengthening the alkali resistance of a porous glass

Details Method of strengthening the alkali resistance of a porous glass Method of strengthening the alkali resistance of a porous glass

1985-05-17

1987-04-28

Schor, Kenneth M.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 17, 501 12, C03C 1500

Patent

active

046611380

ABSTRACT:
This invention is concerned with a method of strengthening the alkali resistance of a porous glass, which comprises eluting the acid-soluble phase of a phase separation glass with an acid to form a porous glass, immersing the resulting porous glass in a solution of zirconium alcoholate to form a thin film of the zirconium salt on the surface of the porous glass, hydrolyzing, drying, calcining and thereby forming ZrO.sub.2 polymer on the surface of the porous glass.

REFERENCES:
patent: 2491761 (1949-12-01), Parker
patent: 2831780 (1958-04-01), Deyrup
patent: 3681113 (1972-08-01), Yoldas
patent: 3847583 (1974-11-01), Dislich et al.
patent: 4295868 (1981-10-01), Holter
patent: 4340408 (1982-07-01), McMillan et al.
Yoldas; Journal of Materials Science, 12 (1977) 1203-1208, vol. No. 6; Chapman and Hall Ltd., printed in Great Britain; copy in 501-12.

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