Ross-linked sulphonated polymers and their preparation process
US6670424B1 · kind B1 · utility
19Cited by
18References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1999 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Sep 7, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is concerned with cross-linked sulfonated polymers, eventually perfluorinated, and their preparation process. When molded in the form of membranes, the polymers are useful in electrochemical cells, in a chlorine-sodium electrolysis process, as separator in an electrochemical preparation or organic and inorganic compounds, as separators between an aqueous phase and an organic phase, or as catalyst for Diels-Alder additions, Friedel-Craft reactions, aldol concentrations, cationic polymerisation, esterification, and acetal formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.