BASF. TOYOKASEI. PERP%200809S12_Styrene%20Block%20Copolymer. Styrene block copolymers (SBCs), which combine the properties of a thermoplastic resin and those of an elastomer, are based on block copolymers having an elastomeric center segment and polystyrene end segments.
It should be noted that there are many possible block configurations of SBCs. Common industry vernacular includes di-block (polystyrene-elastomer) materials, polystyrene‑elastomeric center segment- polystyrene linear structures, as well as a variety of branched configurations. This report follows industry convention and includes di‑block, linear as well as multi-block styrenic block copolymers which can be classified as thermoplastic elastomers. Of these different types of SBCs, linear materials remain the most common.