Ethylene-propylene-diene rubber, elastomer composition and vulcanized rubber thereof
US5698639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Aug 21, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides ethylene-propylene-diene rubbers capable of imparting excellent heat resistance, weather resistance and dynamic fatigue resistance to vulcanized rubbers made therefrom. The ethylene-propylene-diene rubbers have sulfur uniformly dispersed therein by mixing a solution of the sulfur with a solution of the ethylene-propylene-diene rubber prior to the addition of vulcanization accelerators or other rubber additives to the rubbers. The vulcanized rubbers are particularly suitable for use as automobile components which require dynamic fatigue resistance such as muffler hangers, belts, rubber vibration insulators, engine mounts, tire treads for pneumatic tires, sidewalls for pneumatic tires and white sidewalls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.