Nonaqueous polymerization of fluoromonomers

Details Nonaqueous polymerization of fluoromonomers Nonaqueous polymerization of fluoromonomers

1998-03-16

1999-11-09

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262181, 526231, 526247, 526249, 526254, 526255, 526942, C08F 434

Patent

active

059816732

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.

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