Sulfonated perfluorocyclobutane block copolymers and proton conductive polymer membranes
US7897692B2 · kind B2 · utility
10Cited by
25References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2008 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | May 31, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/122
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A sulfonated aromatic perfluorocyclobutane block copolymer comprises a hydrophobic perfluorocyclobutane ether chain segment and a hydrophilic sulfonated perfluorocyclobutane ether chain segment. The sulfonated perfluorocyclobutane copolymer may be used to make proton conductive membranes and membrane electrode assemblies in fuel cells. Processes of making the block copolymer through thermal coupling reactions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.