Patent ID: 6509441
Filing Date: 2003-01-21
Classification: B01D,C08G,C08J,C08L,H01M,Y02E,Y02P

Abstract:
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, andwherein x is 1 or 2,said polymer having at least a portion of the aryl groups of the backbone substituted with â€”SO3H and at least a portion of the aryl groups of the backbone substituted with â€”NO2.