1988
DOI: 10.1002/apmc.1988.051570106
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Cyclodehydration of bismaleamic acids

Abstract: The paper describes thermal and chemical cyclodehydration studies of bismaleamic acids prepared by reacting 4,4′‐diaminodiphenyl methane (DADPM), 4,4′‐diaminodiphenyl ether (DADPE), and 3,3′‐diaminodiphenyl sulfone (DDS) with maleic anhydride and 3,3′,4,4′‐benzophenone tetracarboxylic acid dianhydride. Thermal cyclisation was carried out by heating the bismaleamic acids at 120 – 140°C for 1 – 4 h. Chemical cyclisation was carried out by treating the bismaleamic acids with NaOAc/Ac2O to give bismaleimides BTM, … Show more

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