Fluoroelastomers endowed with high resistance to polar solvents and to bases
US5639838A · kind A · utility
27Cited by
13References
6Claims
0Family size
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Key dates
| Filing date | Aug 23, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Aug 23, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F214/262
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fluoroelastomers comprising, by mole: PA1 (a) from 33 to 75% of tetrafluoroethylene (TFE); PA1 (b) from 15 to 45% of a perfluorovinylether (PVE); PA1 (c) from 10 to 22% of vinylidene fluoride (VDF). They are endowed with high resistance to polar solvents and to bases, excellent compression set also at high temperatures, low Tg and good processability. They result particularly suitable for the manufacture of sealing elements (O-rings) for plants intended to the production of methylterbutylether (MTBE).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.