Bilayer polyamide desalination membrane
US11684895B2 · kind B2 · utility
0Cited by
8References
3Claims
0Family size
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Key dates
| Filing date | Sep 3, 2020 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Jul 14, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite reverse osmosis membrane having a semipermeable bilayer polyamide composition comprising a base layer containing a rigid crosslinked aromatic polyamide and a top layer containing a flexible aliphatic polyamide is disclosed, the two layers in combination providing reduced salt passage in reverse osmosis desalination of brackish waters and of seawater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.