Micro-and nanocomposite support structures for reverse osmosis thin film membranes
US8029857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2007 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Dec 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2443
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are compaction resistant thin film composite membranes having a porous polymeric support; a semi-permeable polymer film polymerized on the porous polymeric support; and particles, of a size in the range of microparticles and nanoparticles, dispersed in the porous polymeric support. Also disclosed are methods of making compaction resistant membranes by polymerizing a polymer film on a porous polymeric support with particles of a size in the range of microparticles and nanoparticles dispersed therein, the particles having been selected to improve flux flow characteristics over time of the semi-permeable membrane. Also disclosed are methods of purifying water using the disclosed membranes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.