C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 65/32 (2006.01) C08G 65/00 (2006.01) C08G 65/26 (2006.01)
Patent
CA 2203339
Process for preparing perfluoropolyethers with bromo- or iodo-containing end groups, respectively, by subjecting a peroxidic perfluoropolyether to thermal treatment, in absence of UV radiations, at temperatures from 120°C to 280°C in the presence of bromo- or iodo-containing compounds having, respectively, the following general formulas: T T'T" C Br wherein T,T',T" equal to or different from each other are selected from Br, F, H or R'f, wherein R'f is a perfluoroalkylic chain from 1 to 8 carbon atoms; R R'R"C I wherein R, R',R", equal to or different from each other can be I (iodine), H, F or R'f, wherein R'f has the meaning indicated above.
Guarda Pier Antonio
Marchionni Giuseppe
Ausimont S.p.a.
Riches Mckenzie & Herbert Llp
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