Preparation of hexafluoropropene oligomers
AssigneeMinnesota Mining and Manufacturing Company
InventorRobert A. Prokop
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Abstract
A process for the oligomerization of hexafluoropropene comprises contacting hexafluoropropene with a catalyst or a mixture of catalysts selected from the group consisting of the cyanide, cyanate, and thiocyanate salts of alkali metals, quaternary ammonium, and quaternary phosphonium, in the presence of polar, aprotic solvent, e.g., acetonitrile. The process of the invention is especially useful for selectively preparing hexafluoropropene dimers, e.g., perfluoro-2-methyl-2-pentene and perfluoro-2-methyl-3-pentene, in good yield by the proper choice of solvent and catalyst.
Claims10
A process for the oligomerization of hexafluoropropene comprising contacting hexafluoropropene with a catalyst or a mixture of catalysts selected from the group consisting of the cyanide, cyanate, and thiocyanate salts of alkali metals, quaternary ammonium, and quaternary phosphonium, in the presence of polar, aprotic solvent.
A process for the oligomerization of hexafluoropropene comprising contacting hexafluoropropene with a catalyst selected from the group consisting of the cyanide, cyanate, and thiocyanate salts of potassium in the presence of acetonitrile.
Dependencies are inferred from the claim text.