Filtration membranes with functionalized star polymers
US9782727B2 · kind B2 · utility
5Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Jul 20, 2034 |
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.