Membrane which comprises a blend of a polysulphone or a polyether sulphone and polyethylene oxide/polypropylene oxide substituted ethylene diamine
US6495043B1 · kind B1 · utility
14Cited by
3References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Dec 20, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A membrane which can be used in membrane filtration processes and which has a reduced tendency to fouling is a polysulphone or a plyether sulphone and a polyethylene oxide/polypropylene oxide substituted diamine and can be made by a phase inversion process in the presence of pore modifying agents such as an alcohol, glycerol or glycol to give a membrane which has a pore size of 0.1&mgr; to 1 micron and is hydrophilic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.