HETERO-BRANCHED RADIAL POLYSTYRENE-POLYISOPRENE BLOCK COPOLYMER AND PREPARATION METHOD THEREOF

摘要

The present invention heterocyclic represented by the following formula (1) having a structure composed of suitable polystyrene, polyisoprene, and polybutadiene block for use as a base polymer of the pressure-sensitive adhesive - provides a radial block copolymer and a method of manufacturing the branch structure . ; Formula 1 ; (pS-pI) ₃ X- (pS-pI-pB) ; Wherein, pS is polystyrene, pI is polyisoprene, pB is polybutadiene, X is a tetravalent residue of a coupling agent.