Higher .alpha.-olefin copolymer, vibration-insulating rubber molded product, and process for the preparaton of the rubber molded product
US5387664A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Jan 21, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.