Asymmetric gel-filled microporous membranes
US7247370B2 · kind B2 · utility
52Cited by
12References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2002 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249961
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention provides asymmetric membranes composed of a microporous substrate whose pores contain a crosslinked gel, the density of the crosslinked gel being greater at or adjacent to one major surface of the membrane than the density at the other major surface. The membranes are useful for separating matter from liquids and display good flux and good rejection at low pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.