Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1976-07-06
1978-08-01
Bashore, S. Leon
Glass manufacturing
Processes
Forming product or preform from molten glass
65 33, 65DIG14, 264 63, C03B 3700, C03B 3200, C04B 3564
Patent
active
041040457
ABSTRACT:
Quartz glass of high thermal stability is produced from a SiO.sub.2 solution or sol which is substantially free of alkali and alkaline earth metal oxides and contains chromium and/or manganese in about 0.05 to 20% by weight of the SiO.sub.2 expressed as Cr.sub.2 O.sub.3 and Mn.sub.2 O.sub.3. The quartz glass upon heating above 1100.degree. C forms cristobalite having an average crystallite size of about 100 to 500 A. Articles therefrom retain their physical and mechanical properties at high temperatures. The materials are suited for producing fibers by the usual methods of spinning from solutions or sols and, as such, or as fibers they are suited for use in reinforcement and insulation and in making flameproof textiles.
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Handbook of Glass Manufacture vol. II, Fay Tooley pp. 192 to 199, copyright 1960.
Bashore S. Leon
Bayer Aktiengesellschaft
Miga Frank W.
LandOfFree
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