Modified polymer and modified polymer membranes
AssigneeUniversität Stuttgart
InventorJochem Kerres
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Abstract
The present invention provides novel, economic processes for preparing nitrated and sulfonated polymers and aminated and sulfonated polymers. Also provided are the polymers prepared by these processes. The invention also provides for membranes comprising the polymers, methods for preparing the membranes and their use in electromembrane processes, particularly in fuel cells.
Claims26
A sulfonated and nitrated polymer having an aryl backbone comprising a plurality of aryl moieties selected from the group consisting of R1, R2, and mixtures thereof, said aryl moieties being connected by bridging moieties selected from the group consisting of R5, R6, R7 and R8;
- wherein
- wherein R3 and R4 are each selected from the group consisting of H, methyl, and 4-phenoxybenzoyl, and
- wherein x is 1 or 2,
- said polymer having at least a portion of the aryl groups of the backbone substituted with —SO3H and at least a portion of the aryl groups of the backbone substituted with —NO2.
Dependencies are inferred from the claim text.