A polyarylether includes repeating units of the structure IA. -Ph -CO -Ar' -CO -Ph -and of the structure
wherein IA and IB are linked through ether linkages, Ph is phenylene, Ar' is a polyaromatic group such as biphenylene and Ar2 may be Ph or a polyaromatic group wherein two aromatic groups may be linked by -CO -or -SO2 -and at least some of the groups Ar2 contain -SO2 -. In preferred polymers, at least some of the structures IA are joined to each other or to an Ar2 group which does not contain -SO2-. The polymers typically have a glass transition temperature of ≧ 200°C and a melting temperature of ≧ 300°C and preferably ≦ 430°C. Polymers of this type have enhanced solvent resistance, even when essentially amorphous.
聚芳基醚包括结构 IA.-Ph -CO -Ar' -CO -Ph - 的重复单元,其中 IA 和 IB 通过醚键连接,Ph 为亚苯基,Ar' 为多芳香族基团(如
联苯),Ar2 可以是 Ph 或多芳香族基团,其中两个芳香族基团可以通过 -CO - 或 -SO2 - 连接,并且至少部分基团 Ar2 含有 -SO2 -。 在优选聚合物中,至少部分结构 IA 相互连接或与不含 -SO2- 的 Ar2 基团连接。 此类聚合物的
玻璃化转变温度通常≧ 200°C,熔化温度≧ 300°C,最好≦ 430°C。