Аннотация:Kinetic regularities of the synthesis of soluble polyimide by cyclization of polyamiсacid in solution are investigated. The eff ective rate constants for the reactions of decompositionand imidization of polyamiс acid occurring during imidization are determineddepending on temperature. It is demonstrated that the negative deviation of the kineticsof the imidization of polyamiс acid in solution from the fi rst-order reaction equation isbasically due to the infl uence of the polyamic acid decomposition with the formation ofterminal amino groups.
