Patent ID: 6987163
Filing Date: 2006-01-17
Classification: C08G,C08J,H01M,Y02E,Y02P

Abstract:
1. A modified polybenzimidazole having a chemical structure characterized by the following recurring unit: wherein X is selected from the group consisting of: H,CH 2 CH 2 CH 2 SO 3 H, PO(OCH 2 CH 3 ) 2 , PO(OH) 2 , and PO(OCH 3 ) 2 ; and R is selected from the group consisting of: Br, PO(OCH 2 CH 3 ) 2 , PO(OH) 2 , and PO(OCH 3 ) 2 ; and having a number average molecular weight between 2,000 and 1,000,000 Da.