High purity synthetic vitreous silica particles
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United States of America Patent
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Issued Date -
Oct 28, 2004
app pub date -
Mar 17, 2004
filing date -
Jun 27, 2001
priority date (Note) -
Abandoned
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Abstract
High purity synthetic quartz glass particles are derived from alkali metal silicate and have a total amount of metal impurities content of at least 1 .mu.g/g and, in particular, have oxygen-deficient defects. The high-purity synthetic quartz glass particles having high viscosity similar to natural quartz and high-purity similar to known synthetic quartz can be provided at a low cost.
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