Patent ID: 6211415
Filing Date: 2001-04-03
Classification: C07C

Abstract:
A process for the thermal decomposition of a hexafluoropropylene oxide oligomer of the formula:RfO[CF(CF.sub.3)CF.sub.2 O].sub.n CF(CF.sub.3)COF (I)wherein Rf is a group represented by the formula:F(CF.sub.2).sub.m --in which m is an integer of 1 to 8, or the formula:(CF.sub.3).sub.2 CF(CF.sub.2)q--in which q is an integer of 0 to 6, and n is a number of 3 to 20 comprising the step of heating the oligomer in a solvent at a temperature of at least 100.degree. C. in the presence of a compound which generates a fluoride (F.sup.-) ion.