A novel phosphorus-containing copolycarbonate was synthesized from bisphenol-A,2-（6-oxido-6H-dibenz<1,2>oxa phosphorin-6-yl）-1,4-dihydroxy phenylene（ODOP-HQ） and triphosgene by interfacial polycondensation,and a copolycarbonate with an inherent viscosity of 0.53 dL/g was obtained.The（copolymer） was characterized by elemental analysis,FT-IR,DSC,TGA,and NMR.DSC result shows that the Tg of the copolycarbonate is 149 ℃,which is higher than that of normal PC.The TGA（result） shows that the onset decomposition temperature of the copolycarbonate is 355 ℃,which indicates it（possesses） a good thermal stability.
