Back to results
US 4,086,407 AGranted
Fluoro compound preparation
AssigneePhillips Petroleum Company
InventorGeorge B. Fozzard
Life of this patent
Estimating the term…
Abstract
Compounds of the formulas ##STR1## and mixtures thereof are prepared by codimerization of R.sub.f --CF.dbd.CF.sub.2 and R--CH.dbd.CH.sub.2. The cleavage product of the cyclobutane derivatives is copolymerized.
Claims4
The process of polymerization which comprises:
- (a) cyclodimerizing hexafluoropropylene and ethylene under dimerizing conditions at a temperature in the range of 200.degree. C. to 600.degree. C., thereby producing the codimer 1-trifluoromethyl-1,2,2-trifluorocyclobutane,
- (b) cracking said codimer 1-trifluoromethyl-1,2,2-trifluorocyclobutane under cracking conditions, thereby producing an admixture of 2,3,3-tetrafluoropropylene and vinylidene fluoride, and
- (c) polymerizing said 2,3,3-tetrafluoropropylene, said vinylidene fluoride, or copolymerizing both together under polymerization conditions, thereby producing a polymer.
Dependencies are inferred from the claim text.