| 摘要 |
<p>The present invention is a treated, semi-permeable, polymeric membrane having improved selectivity for separating components of a gas mixture. The membrane is provided by fluorinating a polymer cast into membrane form, having the general structural formula: <IMAGE> wherein R1 is a linear or branched C1-C4 alkyl group; R2 and R3 are independently linear or branched C1-C6 alkyl groups; R4 is a linear or branched C1-C12 alkyl or aryl group; X is a C1-C3 alkyl group or <IMAGE> m is at least 100; and n is 0 or 1.</p> |
