Higher alpha -olefin copolymer, vibration-insulating rubber molded product, and process for the preparaton of the rubber molded product

摘要

The higher alpha -olefin copolymer of the invention is a copolymer of specific higher alpha -olefin, specific alpha , omega -diene and specific non-conjugated diene, and this copolymer has a specific molar ratio of the higher alpha -olefin to the alpha , omega -diene, a specific content of the non-conjugated diene and a specific intrinsic viscosity. This higher alpha -olefin copolymer can be prepared using a catalyst for olefin polymerization formed from a specific solid titanium catalyst component, an organometallic compound catalyst component and an electron donor catalyst component. The vibration-insulating rubber molded product of the invention is formed from a vulcanized product of the above-mentioned copolymer. The above-mentioned copolymer is excellent not only in weathering resistance, ozone resistance, thermal aging resistance, low-temperature characteristics, vibration-damping properties and dynamic fatigue resistance but also in processability, so that an excellent vulcanized product can be obtained from the copolymer.