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US 5,080,698 AGranted
Aromatic polyethers containing cyano groups for gas separation
AssigneesE. I. Du Pont de Nemours and Company, L'Air Liquide
InventorTimothy D. Krizan
Life of this patent
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Abstract
The disclosed invention is directed to polycyanoarylether membranes. These membranes are formed by reacting an aromatic diol with a dihalobenzonitrile or dinitrobenzonitrile in the presence of a base and a polar, aprotic solvent. These membranes can be provided as either homopolymers or copolymers.
Claims14
A membrane for gas separations comprising a polycyanoarylether.
Dependencies are inferred from the claim text.