SYNTHESIS AND CHARACTERIZATION OF CERTAIN NEW POLY(BISIMIDE)S .1.

Maleic and citraconic anhydrides were reacted with several diamines to obtain a novel class of high-temperature-resistant bisimides. The bisimides were characterized by melting points, elemental analysis, UV-Vis, 1H- and 13C-NMR, and mass spectral analysis. The bisimide monomers were then polymerized by the addition process. A poly(amidemaleimide) was also synthesized by reacting maleic anhydride with p-aminobenzhydrazide. The thermal stability of these highly crosslinked poly(bisimide)s was examined by TGA and DTA. A neat bisimide monomer obtained from 2,2′-bis[4-(p-aminophenoxy)phenyl] propane with maleic anhydride namely, 2,2′-bis(4-(p-maleimidophenoxy)phenyl]propane, was reacted with 2,2′-bis[4(p-aminophenoxy)phenyl]propane by the Michael reaction. A fiberglass cloth reinforced laminate was prepared from a bismaleimide and amine mixture, and the mechanical properties of the test laminate were evaluated.