Membrane comprising oxyethylene groups
US8177892B2 · kind B2 · utility
2Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 2008 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Apr 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a membrane wherein said membrane comprises a continuous non-porous layer comprising a polymerized composition that comprised prior to polymerization at least one type of compound having a molecular weight of at least 1500 Da and comprising at least 75 weight % of oxyethylene groups and at least two polymerizable groups each comprising a non-substituted vinyl group. The invention further relates to the use of this membrane for separating polar gases and vapors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.