Process for preparing of semipermeable membranes
US4163725A · kind A · utility
20Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/755
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for the preparation of semipermeable membrane which comprises exposing porous shaped articles of polysulfone to a plasma. The resulting semipermeable membrane is very useful for separating substances by reverse osmosis or ultrafiltration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.