Chlorinated EPDM with superior stability
US5015696A · kind A · utility
3Cited by
7References
10Claims
0Family size
Inventors
Key dates
| Filing date | Jul 30, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Jul 30, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer having a chlorine content of from about 0.5 to 14 percent by weight characterized by superior viscosity stability on storage or exposure to elevated temperatures is obtained by chlorinating an ethylene-alpha olefin-nonconjugated diolefin terpolymer wherein said nonconjugated diolefin is a bridged ring nonconjugated diolefin characterized in that it is a 5-alkenyl-2-norbornene wherein the alkenyl group is a C.sub.5 to C.sub.12 hydrocarbon group with a trisubstituted olefinic bond that is not .alpha., .beta. to said 2-norbornene ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.