Selective membrane having a high fouling resistance
US6913694B2 · kind B2 · utility
34Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2001 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jun 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31739
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A selective membrane having a high fouling resistance. In one embodiment, the selective membrane is a composite polyamide reverse osmosis membrane in which a hydrophilic coating has been applied to the polyamide layer of the membrane, the hydrophilic coating being made by (i) applying to the membrane a quantity of a polyfunctional epoxy compound, the polyfunctional epoxy compound comprising at least two epoxy groups, and (ii) then, cross-linking the polyfunctional epoxy compound in such a manner as to yield a water-insoluble polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.