High temperature thermal insulating material
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United States of America Patent
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Aug 24, 1999
Grant Date -
N/A
app pub date -
Mar 13, 1998
filing date -
Mar 13, 1998
priority date (Note) -
Expired
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Abstract
A high temperature thermal insulation has a dry mixture which includes cement, gypsum and a special particulate material having small particles which exhibit good insulating properties. The particles have a low density polymeric core covered by a chemically inert coating such as calcium carbonate. A special liquid catalyst is added to the dry mixture to cause the particles to be bound together with the cement and gypsum. The cement and gypsum cover and protect the particles from melting due to elevated temperatures, and the particles are thus able to resist heat transfer in high temperature applications.
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