A method for producing a thermoplastic elastomer block copolymer derived from conjugated dienes and methyl methacrylates and having improved heat resistance,

摘要

Polymerizing the conjugated diene monomer in the presence of an anionic polymerization initiator and a nonpolar solvent, and then polymerizing the methyl methacrylate monomer in the presence of the same solvent in the presence of an alkyl-metal alkoxy alcoholate ligand.;Copolymers with elastomeric and thermoplastic blocks useful as formulations for improving heat resistance and for improving the impact strength and heat resistance of pressure sensitive adhesives and polymers are obtained.