BRANCHING AGENT FOR BRANCHED POLYCARBONATE CAPABLE OF IMPROVING THE MATTER PROPERTY AND THE REACTIVITY OF THE BRANCHED POLYCARBONATE, A PRODUCING METHOD THEREOF, AND THE BRANCHED POLYCARBONATE USING THEREOF

摘要

PURPOSE: A branching agent, a producing method thereof, and a branched polycarbonate using thereof are provided to apply the agent for a melt-polymerization process for the branched polycarbonate and to improve the molecular weight of the branched polycarbonate.;CONSTITUTION: A producing method of a branching agent for a branched polycarbonate marked with chemical formula 1 comprises a step of SN2 reacting compounds marked with chemical formula 4, and chemical formula 5. In chemical formula 4, R1 refers to a linear or branched alkyl group of C1~C30, an alkoxy group, an aryl group of C6~C30, an aralkyl group, and an alkyl-substituted aryl group of C6~C30. L is a nucleophile selected from a hydroxyl group, an amine group, and a sulfone group. In chemical formula 4, R2 is the linear or branched alkyl group of C1~C30, the alkoxy group, the aryl group of C6~C30, or the alkyl-substituted aryl group of C6~C30.;COPYRIGHT KIPO 2010