Perfluorodioxoles, the preparation process thereof, and homopolymers and copolymers therefrom
US5646223A · kind A · utility
20Cited by
24References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1996 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Aug 7, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/01
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to new thermoprocessable copolymers of tetrafluoroethylene constituted by perfluoromethylvinylether (0.5-13% by weight), a fluorinated dioxole (0.05-3%) and tetrafluoroethylene (difference to 100%), particularly useful for coating electric cables by melt extrusion. It relates also to new perfluorodioxoles of formula ##STR1## wherein R.sub.F is a C.sub.1 -C.sub.5 perfluoroalkyl radical; X.sub.1 and X.sub.2 are, independently from each other, F or CF.sub.3 ; and their homopolymers and copolymers, in particular thermoprocessable copolymers as defined above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.