Mixed matrix membranes
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United States of America Patent
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Sep 19, 2006
Grant Date -
Nov 27, 2003
app pub date -
Apr 10, 2003
filing date -
Apr 10, 2002
priority date (Note) -
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Abstract
Mixed matrix membranes are prepared from zeolites and polymers, such as polyimides, in a void free fashion where either no voids or voids of less than several Angstroms are present at the interface of the polymer and the zeolite by bonding (hydrogen, ionic, or covalent) functional groups on the zeolite with functional groups on the polymer. The mixed matrix membranes may be cast or formed by ISAM processes, and may be present on a variety of supports including hollow fibers.
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