Substituted polyacetylene separation membrane
A separation membrane is described which is useful for gas separation, particularly separation of C{sub 2+} hydrocarbons from natural gas. The invention encompasses the membrane itself, methods of making it and processes for using it. The membrane comprises a polymer having repeating units of a hydrocarbon-based, disubstituted polyacetylene, having the general formula shown in the accompanying diagram, wherein R{sub 1} is chosen from the group consisting of C{sub 1}-C{sub 4} alkyl and phenyl, and wherein R{sub 2} is chosen from the group consisting of hydrogen and phenyl. In the most preferred embodiment, the membrane comprises poly(4-methyl-2-pentyne) [PMP]. The membrane exhibits good chemical resistance and has super-glassy properties with regard to separating certain large, condensable permeant species from smaller, less-condensable permeant species. The membranes may also be useful in other fluid separations. 4 figs.
- Research Organization:
- Membrane Technology and Research, Inc
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG03-94ER81811
- Assignee:
- Membrane Technology and Research, Inc., Menlo Park, CA (United States)
- Patent Number(s):
- US 5,707,423/A/
- Application Number:
- PAN: 8-663,906
- OSTI ID:
- 570515
- Resource Relation:
- Other Information: PBD: 13 Jan 1998
- Country of Publication:
- United States
- Language:
- English
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