Reverse osmosis membrane
US4259183A · kind A · utility
96Cited by
17References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Jan 10, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/0633
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite permselective membrane is prepared by reaction of a film or layer containing cycloaliphatic polyfunctional secondary amines with a triacyl halide or its mixture with a diacyl halide. The membrane is useful in separating components of fluid mixtures or solutions, such as the removal of salts from aqueous solutions by reverse osmosis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.