Filtration membranes with functionalized star polymers
US10906007B2 · kind B2 · utility
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23References
12Claims
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Key dates
| Filing date | Sep 5, 2017 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Feb 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A thin film composite membrane (TFC) includes an active layer on a support. The active layer includes at least 8 barrier layers of star-polymers each having at least three linear polymers attached at a central core. Each of the barrier layers has a thickness between 5 and 50 nm, and the barrier layers have alternating charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.