Process for preparing oligomers of tetrafluoroethylene
AssigneeCentral Glass Company, Limited
InventorsMasahiro Ozawa, Fumio Inoue, Tadaaki Komatsu, Kimiaki Matsuoka
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Abstract
Oligomers of tetrafluoroethylene are prepared by oligomerization of tetrafluoroethylene in an organic solvent in the presence of a fluoride compound and a crown ether. The catalytic action of the fluoride compound can be far improved when the fluoride compound is used together with a crown ether.
Claims19
A process for preparing oligomers of tetrafluoroethylene comprising subjecting tetrafluoroethylene monomer to an oligomerization reaction in the presence of a fluoride compound selected from the group consisting of potassium fluoride, sodium fluoride, cesium fluoride, ammonium fluoride, and a quaternary ammonium fluoride and a crown ether, at a temperature of about from 20.degree. to 200.degree. C, said oligomerization reaction being carried out in an organic solvent which is inert under said reaction conditions, said fluoride compound being employed in an amount greater than 0.01 mol per liter of said solvent and said crown ether being employed in an amount greater than 1/50 mol of the employed fluoride compound.
Dependencies are inferred from the claim text.