Rubber composition for geothermal application
US4575522A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1985 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Mar 7, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/39
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition for use in geothermal or high temperature and steam applications of ethylene-propylene copolymer with peroxide generated carbon to carbon crosslinkage. Effective amounts of antioxidants, carbon black, lubricant, thermal stabilizer and aid to peroxide crosslinkage is added. An antioxidant and thermal stabilizer system is used to produce a product with unusual thermal stability characteristics. The composition also has a mixture of high and low particle size carbon black which act as an antioxidant and reinforcing system. The composition can be used for rubber components in geothermal drilling for pipe protectors, valve seals and other products which are exposed to a high temperature and steam saturated environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.