Process for the oligomerization of hexafluoropropene oxide

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

1990-01-11

1990-11-27

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic halides

560184, C07C 5158, C07C 5913

Patent

active

049737481

ABSTRACT:
A process for the preparation of perfluorinated carbonyl fluorides from hexafluoropropene oxide (HFPO) is described, 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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