Fluid separation processes using membranes based on fluorinated and perfluorinated polymers
US9975084B2 · kind B2 · utility
1Cited by
32References
10Claims
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Key dates
| Filing date | May 30, 2017 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | May 30, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for separating components or a fluid mixture using membranes comprising a selective layer made from copolymers of an amorphous per fluorinated dioxolane and a fluorovinyl monomer. The resulting membranes have superior selectivity performance for certain fluid components of interest while maintaining fast permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.