Аңдатпа
Abstract The study results of the synthesis of polyheterocycles based on dianhydrides, obtained by photochemical reaction of aromatic compounds with maleic anhydride, have been presented. In comparison with aromatic analogues the low reactivity of anhydride cycles is characteristic for tricyclodecenetetracarboxylic dianhydrides. This fact made unsuitable the traditional two‐stage method to synthesize high‐molecular polyheterocycles on the basis of these monomers. There has been estimated a possibility of chain growth of oligomeric polyamic acids (PAMA) in mesomorphic‐like state of its solutions in mixed solvents. In this conditions the PAMA polymerization degree changed from 7 up to 60. These peculiarities have given the opportunity to synthesize polyheterocycles in mild conditions. The features of polycondensation of tricyclodecenetetracarboxylic dianhydrides with bis(4‐aminophenyl) ether in the presence of poly‐4‐vinylpyridine, polyacrylic and polymethacrylic acids have been studied. There have been synthesized high‐molecular‐weight polyimides and polyamidoimides, possessing good physicomechanical and thermal properties.