Reverse osmosis membranes
US8177978B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | May 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An interfacial polymerization process (IFP) for preparing a highly permeable TFC RO membrane by contacting on a porous support membrane for IFP, a polyfunctional acyl halide monomer and a polyamine monomer and recovering a highly permeable thin film (TFC) reverse osmosis (RO) membrane. At least one of solutions may contain nanoparticle additives which may release ions into solution and at least one of the solutions may contain additional ions from a second additive. The presence of the nanoparticle additives during IFP may increase the hydrophilicity and/or permeability of the recovered membrane compared to a control membrane. The presence of the additional ions from the second additive may also increase the permeability of the recovered membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.