Solvent resistant hollow fiber vapor permeation membranes and modules
US5753008A · kind A · utility
35Cited by
18References
59Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1995 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Jul 12, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1042
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vapor permeation method and apparatus for removing a vapor from a vaporous feed stream, the method and apparatus utilizing highly solvent-resistant composite hollow fiber membranes and a permeate flow countercurrent to the feed flow, wherein the support of the composite membrane is formed by solution casting and has been rendered sufficiently solvent-resistant by a post-casting step to retain at least 20 of its burst pressure when soaked in the solvent used to cast the support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.