Chlorotrifluoroethylene telomerization process

Details Chlorotrifluoroethylene telomerization process Chlorotrifluoroethylene telomerization process

C - Chemistry, Metallurgy

07

C

260/656.2

C07C 17/26 (2006.01) C07C 17/278 (2006.01) C07C 19/08 (2006.01) C07C 19/10 (2006.01) C08F 2/38 (2006.01) C08F 8/20 (2006.01) C08F 14/24 (2006.01)

Patent

CA 1231726

CHLOROTRIFLUOROETHYLENE TELOMERIZATION PROCESS ABSTRACT An improved process for preparing telomers of chloro- trifluoroethylene comprises the solution telomerization reaction of chlorotrifluoroethylene with carbon tetrachloride in the presence of a catalytic amount of ferric chloride (FeCl3) and a reductant selected from the group consisting of iron, nickel, cobalt, vanadium, molybdenum, chromium, their alloys and mix- tures thereof. Preferably, the solvent for the system com- prises acetonitrile, and the telomerization is carried out under elevated pressure conditions and at a temperature in the range of from about 90°C to about 150°C. The crude telomer prepared by this process can be fluorinated to produce a sta- bilized oil or grease.

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