Abstract
For the first time, film-forming aromatic acyclic polyimides were obtained as a result of in situ rearrangement or as a result of heat treatment of polycarboxyimidates by the Mumm-Hess mechanism. Intermediate polycarboxyimidates were prepared using the acid-catalyzed reaction of dicarboxylic acids and dinitriles in ionic liquids. The probable mechanism and the corresponding kinetic parameters of thermooxidative decomposition of acyclic polyimides were determined using NetzschThermokinetics 3 – multidimensional nonlinear regression software.
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