Low density microporous polymers and process
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United States of America Patent
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Nov 24, 1998
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N/A
app pub date -
Feb 28, 1991
filing date -
Feb 28, 1991
priority date (Note) -
Expired
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Abstract
The disclosed invention is a crystalline microporous polymer and process for preparing a low density microporous polymer comprising, providing a mixture of a polymer and a polymer solvent, the mixture capable of achieving a supercritical condition; applying pressure, at a temperature sufficient for the mixture to attain a super critical condition; cooling the supercritical solution that results and precipitating a microporous crystalline polymer product.
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