Nonaqueous polymerization of fluoromonomers
AssigneeThe University of North Carolina at Chapel Hill
InventorsJoseph M. DeSimone, Timothy Romack
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Abstract
The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer chain, and a polymerization medium comprising carbon dioxide, and (2) polymerizing the fluoromonomer. The polymerization medium preferably comprises liquid or supercritical carbon dioxide. Advantageously, the process may also include the step of separating the fluoropolymer from the polymerization medium. The present invention also provides polymerization reaction mixtures useful in the processes of the present invention.
Claims9
A process for making a fluorinated copolymer having a stable end group, said process comprising contacting fluoroolefin, a comonomer capable of copolymerizing with said fluoroolefin, an initiator capable of producing said stable end groups on said polymer, and a polymerization medium comprising liquid or supercritical carbon dioxide;
- and copolymerizing said fluoroolefin and said comonomer.
Dependencies are inferred from the claim text.