Patent ID: 6399729
Filing Date: 2002-06-04
Classification: C08F

Abstract:
A process comprising polymerizing a fluoromonomer comprising an olefin which contains at least one fluorine atom on an olefinic carbon in the presence of a polymerization initiator and chain transfer agent, said chain transfer having the structureR1â€”Oâ€”R2 where R1 is a straight chain or branched saturated hydrocarbon group of 1 to 6 carbon atoms with the proviso that there is at least one hydrogen atom attached to the carbon next to oxygen, and R2 is a straight chain or branched fluorocarbon group or hydrofluorocarbon group of formula CaHbFc wherein a is 2 to 6, b is 0 to 2aâˆ’1 and c is 2 to 2a+1 with the proviso that b+c=2a+1, said polymerizing being carried out in a liquid polymerization medium which is not said chain transfer agent.