Forsterite and its use as insulating material
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United States of America Patent
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Jan 15, 1991
Grant Date -
N/A
app pub date -
Sep 16, 1988
filing date -
Sep 16, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a fibrous-like synthetic forsterite obtained by the calcination of chrysotile asbestos fiber at a temperature of from 650.degree. to 1450.degree. C., said synthetic forsterite being characterized by having an MgO:SiO.sub.2 ratio lower than 1.1, a raw loose density of from 3 to 40 pcf, a thermal conductivity 'k' factor of from 0.25 to 0.40 BTU. In/Hr. .degree. F. Ft.sup.2 and a fusion point of from 1600.degree. to 1700.degree. C. which is useful as an insulating material.
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