Copolymerizable fluorinated compounds, a process for their...

Details Copolymerizable fluorinated compounds, a process for their... Copolymerizable fluorinated compounds, a process for their...

C - Chemistry, Metallurgy

07

C

C07C 43/192 (2006.01) C07C 43/17 (2006.01) C08F 16/32 (2006.01) C08F 36/20 (2006.01)

Patent

CA 2098367

Copolymerizable fluorinated compounds, a process for their preparation and thermoplastic fluoropolymers obtainable therefrom ABSTRACT OF THE DISCLOSURE A 2-allyl-perfluoroalkyl-trifluorovinyl ether of the formula Image (I) wherein R1F and R2F represent either -CF3 or, together, (CF2)n where n = 2 or 3, is produced by a) reacting hexafluoropropene oxide with a 2-allyl- substituted perfluorocycloketone or perfluoroketone, b) subjecting the resulting 2- (allylperfluorocycloalkoxy)- or 2- (allylperfluyoro-alkoxy)-perfluoropropanoic acid fluoride to alkaline saponification thereby to form the corresponding sodium salt, Le A 28 982 c) and decarboxylating the sodium salt at about 150- 350°C. Polymers thereof produce amorphous, transparent coatings or molded items with glass transition temperatures between 60 and 150°C and have good solubility characteristics in a number of organic solvents. Le A 28 982

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