This volume documents the proceedings of the "Second International Symposium on Polyimides and Other High Temperature Polymers: Synthesis, Characterization and Applications, held in Newark, New Jersey, December 3-6, 2001. Polyimides possess many desirable attributes, so this class of materials has found applications in many technologies ranging from microelectronics to high temperature adhesives to membranes. This volume contains a total of 32 papers, all rigorously peer reviewed and revised before inclusion, addressing many aspects and new developments in polyimides and other high temper.