Polymer additive comprising zwitterionic moieties for vinylidene fluoridepolymer based membranes
US12398227B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 15, 2020 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Sep 10, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/76
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention pertains to composition suitable for manufacturing membranes based on vinylidene fluoride (VDF) polymers, to porous membranes thereof, to methods for their manufacture and to uses thereof, especially for the filtration of water phases. Said composition comprising vinylidene fluoride (VDF) polymers and polymer additives comprising zwitterionic moieties delivers outstanding hydrophilization performances of manufactured membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.