Nanofiltration membrane and method of manufacturing a nanofiltration membrane
US10525423B2 · kind B2 · utility
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1References
19Claims
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Key dates
| Filing date | Apr 10, 2014 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jun 4, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nanofiltration membrane comprising a selective layer comprising or consisting of poly(amide-imide) cross-linked with polyallylamine is provided. A method of manufacturing a nanofiltration membrane and use of a nanofiltration membrane in a water softening process that is carried out at a low pressure of less than about 2 bar are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.