Continuous sol-gel process for producing silicate-containing glasses or glass ceramics

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United States of America Patent

PATENT NO 11447413
APP PUB NO 20190330098A1
SERIAL NO

16504017

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Abstract

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A continuous sol-gel process for producing silicate-containing glasses and glass ceramics is proposed, comprising the following steps:

    (a) continuously feeding a silicon tetraalkoxide, a silicon alkoxide with at least one non-alcoholic functional group and an alcohol into a first reactor (R1), and at least partially hydrolyzing by the addition of a mineral acid to obtain a first product stream (A);(b) continuously providing a second product stream (B) in a second reactor (R2) by feeding a metal alkoxide component or continuously mixing an alcohol and a metal alkoxide component;(c) continuously mixing product streams (A) and (B) in a third reactor (R3) for producing a presol to obtain a third product stream (C);(d) continuously adding water or a diluted acid to the product stream (C) to obtain a sol (gelation);(e) continuously filling the emerging sol into molds to obtain an aquagel;(f) drying the aquagels to obtain xerogels;(g) sintering the xerogels to obtain silicate-containing glasses and glass ceramics.

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Patent Owner(s)

Patent OwnerAddress
D SWAROVSKI KG6112 WATTENS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Czermak, Georg Wattens, AT 5 4
Gabl, Christian Kematen, AT 5 4
Gander, Matthias Landeck, AT 6 4
Howell, Roy Layne Gainesville, US 9 41
Lipp, Christian Vomp, AT 9 5
Stepanik, Nina Kotschach-Mauthen, AT 4 2
Streiter, Christina Wattens, AT 5 4

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