| 摘要 |
PURPOSE:To obtain the titled composition having improved flowability, flexural resistance, ozone resistance and appearance of the molded article, and formable even by crosslinking molding, by compounding a block copolymer of an aromatic vinyl compound and a conjugated diolefin with 1,2-polybutadiene, a softener, an aromatic vinyl polymer and a filler. CONSTITUTION:(A) 100pts.wt. of a block copolymer of an aromatic vinyl compound and a conjugated diolefin (e.g. polystyrene-polybutadiene block copolymer) is compounded with (B) 3-60pts. of 1.2-polybutadiene having a bonded 1,2-vinyl content of >=70%, a crystallinity of 5-50% and an intrinsic viscosity [eta] of >=0.7, (C) 3-60pts. of a softener (e.g. aromatic oil), (D) 3-60pts. of an aromatic vinyl polymer (e.g. polystyrene, polychlorostyrene, etc.) and (E) 3-120pts. of a filler (e.g. carbon black). |
