Peroxide curable fluoroelastomers, particularly suitable for manufacturing O-rings
US5674959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1996 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Oct 1, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/275
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New fluoroelastomers are described, having iodine atoms in terminal position and monomeric units in the chain deriving from an iodinated olefin of formula: EQU CHR.dbd.CH--Z--CH.sub.2 CHR--I (I) wherein: R is --H or --CH.sub.3 ; Z is a (per)fluoroalkylene radical C.sub.1 -C.sub.18, linear or branched, optionally containing one or more ether oxygen atoms, or a (per) fluoropolyoxyalkylene radical. These products, upon peroxide curing, require extremely short post-curing treatments (around 30-60 minutes at 180.degree.-230.degree. C.) and are characterized by compression set values lower than 25% (measured on O-rings at 200.degree. C. for 70 hours according to ASTM Standard D395 Method B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.