Antifouling polymer for reverse osmosis and membrane comprising same
US12161979B2 · kind B2 · utility
0Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Oct 15, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/387
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a composite membrane suitable for liquid-liquid filtration/reverse osmosis. The invention also provides a copolymer useful in the composite membrane, the copolymer comprising an anchoring repeating unit and a foulant-repelling repeating unit, as well as methods for preparing the composite membrane and copolymers. In a preferred embodiment, a copolymer (P [SBMA-co-HEMA]) is synthesized via the free radical copolymerization of a zwitterionic monomer of sulfobetaine methacrylate (SBMA) and an anchoring monomer of hydroxyl ethyl methacrylate (HEMA).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.