Low temperature fluorocarbon elastomers
US6294627A · kind A · utility
44Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | May 18, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F216/1408
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fluorocarbon polymer which includes: repeating units derived from one or more perfluorinated ethers of the formula CF.sub.2.dbd.CFO--(CF.sub.2).sub.m --(O(CF.sub.2).sub.p).sub.n --OR.sub.f.sup.1 wherein R.sub.f.sup.1 is a perfluorinated (C.sub.1 -C.sub.4)alkyl group, m=1-4, n=0-6, and p=1-2; and repeating units derived from vinylidene fluoride; wherein the polymer has a glass transition temperature of -50.degree. C. or lower and an oxygen to carbon ratio of at least about 0.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.