Cross-linked sulphonated polymers and method for preparing same
OwnerChristophe Michot, Michel Armandinventors
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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.
Claims30
A process for cross-linking sulfonyl groups of a sulfonated polymers wherein at least a fraction of the cross-linking bonds bear an ionic charge, the process comprising contacting the polymer with the cross-linking agent allowing the reaction between two sulfonyl groups from adjacent polymeric chains, to form the said cross-linking bonds.
A sulfonated polymer comprising in whole or in part cross-linked sulfonyl groups, and wherein at least a fraction of the cross-linking bonds bear an ionic charge.
Dependencies are inferred from the claim text.