New organo-soluble polyimides based on a new dianhydride: 4-(4-t-butyl-phenyl)-2,6-bis(3,4-phenyl dicarboxylic acid anhydride)pyridine

Abstract

A new series of organo-soluble polyimides was synthesized by polycondensation of new a dianhydride, 4-(4-t-butyl-phenyl)-2,6-bis(3,4-phenyl dicarboxylic acid anhydride)pyridine (BPPDA) with available aromatic diamines via the conventional two-step method. The structures of the synthesized monomer and polymers were confirmed by FT-IR, NMR and elemental analysis. Thermal and solubility properties of resulting polymers were evaluated. The investigations showed that the polymers had high molecular weights and excellent thermal stability, as well as good solubility in common organic solvents.