| abstract |
(57) [Summary] [Structure] Polypropylene 5 to 100 parts by weight of ethylene-α-olefin-non-conjugated diene copolymer rubber 300 parts by weight, 0.5 to 30 parts by weight of an organosiloxane-based crosslinking agent having a SiH group in the molecule, 0.001 to 2 parts by weight of a Group 8 transition metal-based hydrosilylation catalyst, and 0.5 parts of a compatibilizer. Thermoplastic elastomer obtained by mixing and kneading 20 to 20 parts by weight and melting and kneading. [Effect] A thermoplastic elastomer composition having stable low creep properties and low temperature impact resistance can be obtained. That is, while being thermoplastic, it is excellent in flexibility, heat-resistant creep performance, low-temperature impact resistance, and mechanical strength, and rubber elasticity equal to or higher than that of vulcanized rubber can be stably exhibited over a wide temperature range for a long period of time. |