Vulcanized (per) fluoroelastomer sealing articles
US8263708B2 · kind B2 · utility
0Cited by
24References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2009 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention pertains to sealing articles of vulcanized (per)fluoroelastomer compositions incorporating particles of a vinylidene fluoride (VDF) polymers having a Shore A hardness of at least 85 when determined according to ASTM D 2240 Type A Durometer method, and a compression set of less than 30%, when determined according to ASTM D395 at 200° C. for 70 h on O-ring according to ASTM D1414, and to a process for their manufacture by vulcanizing-molding and thermal post-treating at a temperature above the melting point of the VDF polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.