Aromatic polysulfonates: Preparation and properties

Abstract

Abstract Aromatic polysulfonates of high molecular weight and purity can easily be prepared by interfacial polycondensation of the disulfonyl chlorides with diphenols. The polymers were found to have a low degree of crystallinity, softening ranges in the region 200–250°C, molecular weights up to 50,000 and a thermal stability under nitrogen to above 300°C.