| 摘要 |
PURPOSE:To obtain the titled composition, having excellent tensile strength, impact resilience, fluidity, etc., and suitable as shoe sole materials, etc., by blending a styrene-butadiene based thermoplastic elastic elastomer having a specific molecular structure with specific amounts of process oil, inorganic filler, etc. CONSTITUTION:A composition obtained by blending 100pts.wt. thermoplastic elastomer with 27-60wt% styrene content, consisting of one or more polymer blocks [hereinafter referred to as (B)] consisting essentially of butadiene and two or more polymer blocks [hereinafter referred to as (S)] consisting essentially of styrene and having 1X10<5>-2X10<5> weight-average molecular weight and containing >=85wt% branched components expressed by the formula (m is 3-6; p is polyfunctional coupling agent residue) with (A) 10-150pts.wt. process oil (naphthenic and/or paraffinic oil), (B) 10-100pts.wt. inorganic filler, e.g. calcium carbonate, etc., and (C) 0-100pts.wt. thermoplastic resin, e.g. polystyrene, etc.
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