BRANCHED POLYCARBONATE RESIN WHICH CAN CONTROL MOLECULAR STRUCTURE EFFECTIVELY AND METHOD FOR PRODUCING THE SAME

摘要

A method for preparing a branched polycarbonate resin is provided to allow effective control of the molecular structure, molecular weight and terminal hydroxyl group content of a branched polycarbonate resin, and to inhibit gelling. A method for preparing a branched polycarbonate resin comprises the steps of: carrying out transesterification of an aromatic dihydroxyl compound and diallyl carbonate to form a linear polycarbonate prepolymer; removing the excessive amount of diallyl carbonate and reaction byproducts from the linear polycarbonate prepolymer; and introducing a branching agent to the linear polycarbonate prepolymer from which diallyl carbonate and byproducts are removed and carrying out a reaction.