Fluoro olefin polymerization

Details Fluoro olefin polymerization Fluoro olefin polymerization

C - Chemistry, Metallurgy

08

F

C08F 14/18 (2006.01)

Patent

CA 2736964

A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, wherein said polymerization agent is a compound of the formula (I): R1-O-(CF2)n-COOX (I) wherein R f is CF3CF2CF2-, n is an integer equal to 3, 5 or 7, and X is H, NH4, Li, Na or K.

La présente invention concerne un procédé consistant à polymériser au moins un monomère fluoré dans un milieu aqueux contenant un initiateur et un agent de polymérisation, de façon à obtenir une dispersion aqueuse de particules de fluoropolymères. En l'occurrence, ledit agent de polymérisation est un composé représenté par la formule (I) suivante: R1-O-(CF2)n-COOX. Dans cette formule, Rf est CF3CF2CF2-, n est un entier valant 3, 5 ou 7, et X est H, NH4, Li, Na ou K.

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