Synthesis and Properties of A Series of Novel Chloro Substituted Poly(aryl ether ether ketone ketone/ aryl ether ether ketone ketone)s with Pendant Cyno Groups

A series of novel chloro substituted poly(aryl ether ether ketone ketone/aryl ether ether ketone ketone)s with pendant cyno groups were prepared by low temperature copolycondensation of 2,5-dichloro-1,4benzendicarbonyl chloride(DDC),terephthaloyl chloride(TPC) with 2,6-diphenoxylbenzonitrile(DPOBN) in the presence of AlCl_(3),DCE and NMP.IR,DSC,TG,WAXD techniques were used to characterize the polymers.Polymers were noncrystalline.Tg of prepared polymers were in the range of 180~ 229℃,Td of prepared polymers were in the range of 445~498℃,which indicated that the polymers had excellent heat-restistance.