The multiphase copolycondensation of PMDA,BOPDPA and ODA was carried out in polar solvent.

• 以均酐 (PMDA)、双醚酐 (BOPDPA)和 4 ,4 -二氨基二苯醚 (ODA)为原料 ,在极性溶剂中进行多相共缩聚。