Polyimide gas separation membranes for carbon dioxide enrichment
US5234471A · kind A · utility
42Cited by
31References
4Claims
0Family size
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Key dates
| Filing date | Feb 4, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Feb 4, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Aromatic polyimide membranes have superior flux at low temperature for carbon dioxide and other condensable gases. Superior flux is achieved without reduction in selectivity or other valuable properties of prior art membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.