Process for the preparation of perfluoropolyetheracyl fluorides

Details Process for the preparation of perfluoropolyetheracyl fluorides Process for the preparation of perfluoropolyetheracyl fluorides

C - Chemistry, Metallurgy

07

C

C07C 51/58 (2006.01) C07C 59/215 (2006.01) C08G 65/22 (2006.01)

Patent

CA 2061145

-1 - HOE 91/F 050 Abstract: A process for the preparation of perfluoropolyetheracyl fluorides. A process for the preparation of perfluoropolyetheracyl fluorides of formula (I) F3C(CF2)2-O-[CF(CF3)CF2-O-]nCF(CF3)COF (I) in which n is an integer from 0 - 60, wherein hexafluoro- propylene oxide is oligomerized in the presence of CsF and a polyethylene glycol dimethyl ether and the reaction mixture thus formed is reacted with at least one of the halogen compounds HCl, HBr, BCl3, PCl3, SCl2 and RmSiCl4m, where m = 0, 1, 2 or 3 and R = C1-C3-alkyl or phenyl, dissolved in an aprotic colvent.

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