Membranes having enhanced selectivity and method of producing such membranes
US5215554A · kind A · utility
32Cited by
18References
98Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1992 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | May 11, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2323/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Glassy polymeric gas separation membranes are chemically modified throughout the thickness thereof. Such membranes manifest selectivity for a pair of gases which is greater than the intrinsic selectivity of the glassy polymeric material and which is greater than the equilibrium intrinsic selectivity of the chemically modified glassy polymeric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.