BRANCHED POLYCARBONATE-POLYSILOXANE COPOLYMER WITH IMPROVED PROCESSABILITY, EXCELLENT LOW TEMPERATURE IMPACT STRENGTH, AND EXCELLENT CHEMICAL RESISTANCE

摘要

PURPOSE: A branched polycarbonate-polysiloxane copolymer is provided to have a high shearing pressure while having excellent low temperature impact strength, high flexibility, excellent mechanical strength, and excellent chemical resistance.;CONSTITUTION: A branched polycarbonate-polysiloxane copolymer is obtained using an aromatic dihydroxy compound, a carbonate precursor, a siloxane compound, and a branching agent. The siloxane compound is a compound represented by chemical formula 2, chemical formula 3, or a combination thereof. In chemical formula 2, each of R1-R8 is a substituted or unsubstituted C1-C10 alkyl group or a substituted or unsubstituted C6-C18 aryl group; and each of A and B is a substituted or unsubstituted C1-C10 alkylene group, a substituted or unsubstituted C6-C18 arylene group, a C1-C10 alkylene group containing oxygen or sulfur, or a C6-C18 arylene group containing oxygen or sulfur.;COPYRIGHT KIPO 2013