Gas separation membranes based on fluorinated and perfluorinated polymers
US9643124B2 · kind B2 · utility
2Cited by
29References
16Claims
0Family size
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Key dates
| Filing date | Oct 23, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of partially fluorinated or perfluorinated dioxolane monomers and a second monomer, such as dioxane or a partially fluorinated dioxolane. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas 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.