| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer resin composition having softness and sufficient elasticity, excellent injection moldability, high mechanical physical properties, rducing bleeding products at heating, further excellent in heat-fusibility with heterogeneous resins at insert molding.SOLUTION: A thermoplastic elastomer resin composition contains: 30 to 70 pts.mass of (A) a polyester block copolymer including as main component, (a) a high melting point crystalline polymer segment consisting of a polyester unit obtained from an aromatic dicarboxylic acid or its ester-forming derivative and an aliphatic diol having a molecular weight of 300 or less and (b) a low melting point polymer segment, and having shear rate γ of 60 sec, melt viscosity &eegr;at a resin temperature of 210°C of 100 to 200 Pa s; 55 to 15 pts.mass of (B-1) a hydrogenated product of styrene conjugated diene block copolymer having shear rate γ of 60 sec, melt viscosity &eegr;at a resin temperature of 210°C of 1200 to 2700 Pa s; 1 to 10 pts.mass of (B-2) a hydrogenated product of the styrene conjugated diene block copolymer having shear rate γ of 60 sec, melt viscosity &eegr;at a resin temperature of 210°C of 3000 Pa s or more; 0 to 10 pts.mass of (C-1) the styrene conjugated diene block copolymer modified with maleic acid; and 1 to 10 pts.mass of (C-2) an olefin copolymer modified with glycidyl; and 1 to 25 pts.mass of (D) an ester type plasticizer based on 100 pts.mass of sum of (A), (B-1), (B-2), (C-1) and (C-2) is mixed. |
