Carbonyl fluoride → Hexafluoropropylene

The procedure described in Example 9 is employed in which 10.2 grams hexafluoropropylene is condensed in at high pressure and 12 grams liquid carbon dioxide is added. The temperature is raised to 60° C., and the cell is charged with molecular oxygen to approximately 2,500 psi. Oxygen is supplied continuously to the reactor. 0.5 grams of a clear fluid is collected in the cold trap corresponding to a 5% yield of perfluoropolyether (based on hexafluoropropylene). Analysis using 19F NMR spectroscopy is consistent with a perfluoropolyether structure. Analysis of portions of the gaseous products shows evidence of carbonyl fluoride and trifluoroacetyl fluoride in addition to other low molar mass fluorooxy compounds.

ORD-Eintrag

ord-8d714edf3b454d60b7576e4d22df60dd

Quelldatensatz

uspto-grants-1999_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05872157