Elastomeric blend compositions having improved weathering stability
US4157992A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1977 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Nov 29, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to improved elastomeric blend compositions for injection molding and extrusion application having improved compression set, weathering stability and physical properties, wherein the improved elastomeric compositions include minimally a metal neutralized sulfonated EPDM terpolymer, a non-polar process oil, an inorganic filler, and a carbon black at critically selected concentration levels. These blend compositions can be readily processed due to their superior rheological properties on conventional plastic fabrication equipment, especially on low pressure injection molding equipment into elastomeric articles having excellent physical properties and desirable rubbery characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.