Glass manufacturing – Processes – With chemically reactive treatment of glass preform
Patent
1988-05-17
1989-11-28
Kellogg, Arthur
Glass manufacturing
Processes
With chemically reactive treatment of glass preform
65 3013, 65116, C03B 2702
Patent
active
048835234
ABSTRACT:
Processes in which glass parts are strengthened by ion exchange with cations in a molten salt bath are improved by removal of the small amounts of moisture and other forms of the hydroxyl group present in the salt melt by either chemical or electrolytic means, prior to the ion exchange. The chemical means involve reacting the hydroxyl-containing compounds with the chlorine-containing gas, while the electrolytic means involve electrolysis to gaseous hydrogen and oxygen. Preferred embodiments further include a gas purge prior to the chemical or electrolytic treatment.
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Lee Huai-Chuan
Meissner Helmuth E.
Toratani Hisayoshi
Burkard Herbert G.
Gerstner Marguerite E.
Kellogg Arthur
Raychem Corporation
Richardson Timothy H. P.
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