Process for the oligomerization of hexafluoropropene oxide

Details Process for the oligomerization of hexafluoropropene oxide Process for the oligomerization of hexafluoropropene oxide

C - Chemistry, Metallurgy

07

C

260/539.7

C07C 51/58 (2006.01) C07C 59/135 (2006.01)

Patent

CA 2007685

Abstract of the Disclosure HOE 89/F 007 A process for the oligomerization of hexafluoropropene oxide A process for the preparation of perfluorinated carbonyl fluorides from hexafluoropropene oxide (HFPO) is des- cribed, in which HFPO is oligomerized in an aprotic polar solvent in the presence of a tertiary diamine in the absence or presence of at least one protonic compound. Preferably employed are tetraalkyl-substituted tertiary aliphatic diamine compounds. Protonic compounds which are possibly and preferably used are water, methanol, glycol, ammonia or diethylamine. The selectivity can be displaced in favor of shorter-chain oligomers, in particular of the dimer, by an increased content of these compounds.

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