PRODUCT MIXED COPOLYMER, TRIBLOCK POLYMER AND STAR POLYMER FROM AROMATIC VINYL MONOMER AND CONJUGATED DIENE MONOMER AND SYNTHESIS OF THE SAME

摘要

PURPOSE: A polymeric composition mixed with various polymers is provided to improve physical properties such as processability, mechanical property or viscoelasticity, compared with an aromatic vinyl monomer and conjugated diene monomer-derived single copolymer. CONSTITUTION: A method for polymerizing a mixed copolymer product comprises a step of adding malonyl chloride to a living polymer negative ion including an aromatic vinyl monomer-derived polymer block and a conjugated diene monomer-derived polymer block when synthesizing a polymer by anionic polymerization reaction of an aromatic vinyl monomer and a conjugated diene monomer.