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.
本发明公开了刚性
氟化单体、其制备方法,以及基于两种新型
三环呫吨核心体系--9,9-双(
全氟烷基)呫吨(I)和 9-苯基-9-
全氟烷基呫吨(II)而衍生的聚合物。这些单体可用于制备先进的高性能聚合物,尤其是聚
酰亚胺。