Method for preparing membranes with adjustable separation performance
US5385672A · kind A · utility
6Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1993 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Oct 13, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for adjustable separation of solutes and solvents involve the combination of the use of a maximally swollen membrane and subsequent vacuum depressurization exerted on the permeate side of that membrane. By adjusting the extent of depressurization it is possible to separate solvent from solutes and solutes from each other. Improved control of separation parameters as well as improved flux rates characterize the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.