Polymeric membrane for gas separation
US4859215A · kind A · utility
28Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 2, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2323/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is a modified polymeric membrane having improved selectivity for separating gas mixtures. The membrane comprises a silyl substituted polyacetylene polymer to which has been added 5 to 50 wt. % of an additive which is miscible with the polymer, has a boiling point >300.degree. C. at atmospheric pressure, is soluble in a common solvent for the polymer and increases the selectivity ratio of O.sub.2 /N.sub.2 by at least 15% over the polymer without the additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.