| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition excellent in moldability, mechanical characteristics and heat resistance and improved in balance between permanent compression set and hardness by compounding a modified olefin-based rubber polymer composition with a thermoplastic polyester elastomer, a crosslinking agent and an olefin-based polymer at a specific ratio. SOLUTION: This thermoplastic elastomer composition is obtained by compounding (A) 100 pts.wt. modified olefin-based rubber polymer composition such as a modified olefin-based rubber polymer obtained by subjecting an olefin- based rubber polymer to graft polymerization with anα,β-unsaturated carboxylic acid ester having hydroxy group and an aromatic vinyl based monomer, preferably at 50-300 deg.C for 0.5-24 hr with (B) 5-400 pts.wt. thermoplastic polyester elastomer, (C) 0.01-20 pts.wt. crosslinking agent and (D) 0.5-10 pts.wt. olefin based polymer having 0.5-20 wt.% vinyl monomer unit content having epoxy group and melting and kneading the compound. |
