Sol-gel method of making multicomponent glass

Details Sol-gel method of making multicomponent glass Sol-gel method of making multicomponent glass

1992-04-07

1993-10-05

Jones, W. Gary

Glass manufacturing

Processes

Forming product or preform from molten glass

65 181, 65 184, 65901, 423338, 501 12, C03B 3701

Patent

active

052500969

ABSTRACT:
Relatively large bodies of low-alkali silicate and other glass can be prepared conveniently by a particulate sol-gel process. The glass comprises at least 85 mole % SiO.sub.2, 1-12 mole % oxide of one or more of Li, Na, K, Rb, Cs, Ti and Zr, 0-6 mole % of oxide of Al, and optionally at most 2.5 mole % of oxide of elements other than Si, Li, Na, K, Rb, Cs, Ti, Zr and Al. The process comprises forming particles from a first sol that comprises Si and one or more of Li, Na, K, Rb, Cs, Ti and Zr, and optionally additionally comprises Al. The process further comprises forming a second sol by dispersing the particles in an aqueous liquid, gelling the second sol, and heat treating the resulting gel body such that the glass results.

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