Semipermeable membranes based on certain sulfonated substituted polysulfone polymers
US5071448A · kind A · utility
31Cited by
4References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Semipermeable membranes comprised of certain sulfonated substituted polysulfone polymers containing the polymer repeat unit (A) or (B) as herein defined. The invention also pertains to processes for using said membranes for the selective permeation of at least one gaseous component from a mixture of gases containing said gaseous component in admixture with other gaseous components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.