Disclosed are rigid fluorinated monomers, their preparation, and polymers derived therefrom based on two novel tricyclic xanthene core systems, 9,9-bis(perfluoroalkyl)xanthene (I) and 9-phenyl-9-perfluoroalkylxanthene (II). The monomers have utility in the preparation of advanced high-performance polymers, particularly polyimides.
本发明涉及一种刚性
氟化单体、其制备方法以及基于两种新型
三环芳
黄酮核心系统(9,9-双(
全氟烷基)芳
黄酮(I)和9-苯基-9-
全氟烷基芳
黄酮(II))制备的聚合物。这些单体在制备高性能聚合物,特别是聚
酰亚胺方面具有实用性。