Membrane composition and method of preparation
US5954966A · kind A · utility
24Cited by
5References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to membranes useful in the separation of water from a solution containing volatile organic compounds and water. The membranes may be used in dehydrating an organic/water mixture to purify an organic when an organic is of interest or, alternatively, producing pure water from an organic/water mixture when clean water is of interest. The membranes include a hydrophilic base polymer, an optional pore-forming polymer and a surface modifying macromolecule (SMM) which imparts surface hydrophobicity to the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.