Process for making a composite membrane
US5256503A · kind A · utility
19Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite membrane comprises a first material which defines a porous matrix and a second material blocking the pores of the matrix, the second material having been crosslinked by irradiation, preferably with UV radiation, when in the pores. Preferably a crosslinking agent is mixed with the second material. The porous matrix may be made by leaching a water soluble material from a blend of that material with polyethylene. The second material may be polymerizable, for example an acrylic acid derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.