Method for enhancing membrane separation
US4157960A · kind A · utility
27Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1977 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Nov 30, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The selectivities of fluid separations of membranes having pores, in which the material of the membranes significantly effects the fluid separations, can be enhanced by the storage of the membranes in water. Suitable materials of the membranes for improvement in accordance with this invention are those which are not unduly susceptible to biodegradation. The membranes for improvement in accordance with this invention preferably have structures which are not unduly affected by drying and thus maintain beneficial mechanical and fluid separation properties after drying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.