Benzophenone-type unsymmetrical substituted aromatic diamines of general formula were prepared starting with p-nitrobenzoyl chloride and substituted benzenes. Interaction of the diamines obtained with aromatic tetracarboxylic acids dianhydrides under the conditions of high-temperature solution polycyclocondensation in m-cresol led to the formation of new high molecular weight organosoluble polyimides.
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Русанов et al. (2008) studied this question.
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