Perfluoroelastomeric compositions and seals having improved chemical resistance and methods of making the same
US5444116A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1993 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jul 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/946
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An elastomeric composition having improved resistance to chemical attack is provided, the elastomeric composition including a perfluoroelastomer and a non-fibrillating particulate fluorographite. Also, a process for improving the processibility and resistance to chemical attack of a perfluoroelastomer is provided, in which the perfluoroelastomer is mixed with a non-fibrillating fluorocarbon particulate polymer to form a elastomeric composition which is processed at a temperature less than the melting temperature of the non-fibrillating fluorocarbon particulate polymer to disperse the fluorocarbon polymer throughout the perfluoroelastomer while maintaining the fluorocarbon polymer in particulate form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.