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US 5,474,596 AGranted
Aromatic polyetherketone gas separation membranes
AssigneeL'Air Liquide
InventorJohn W. Simmons
Life of this patent
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Abstract
Novel aromatic polyetherketone gas separation membranes and the process of using such membranes to separate one or more gases from a gaseous mixture are disclosed. The polyetherketones are formed from 2,6-dihalobenzophenone, preferably 2,6-difluorobenzophenone.
Claims4
A gas separation membrane comprising a polymer having at least one unit derived from 2,6-difluorobenzophenone and an aromatic diol.
Dependencies are inferred from the claim text.