Synthesis of binders based on oligoimides with terminal norbornene groups

The kinetics of formation of IPO thermosetting binder in reaction of partia l esters of norbornene-dicarboxylic and 3,3',4,4'-benzophenonetetracarboxyl ic acids with 4,4'-diaminodiphenylmethane was studied by IR spectroscopy. O n mixing in an alcoholic solution, the initial agents spontaneously form H complexes. Quantum-chemical calculations were performed for two alternative mechanisms involving acylation of diamines with partial esters within the H complex and acylation of diamines with anhydrides formed from partial eat ers after decomposition of the H-complex.