Method of making fluoropolymers
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United States of America Patent
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Nov 18, 1997
Grant Date -
N/A
app pub date -
Feb 7, 1997
filing date -
Mar 27, 1992
priority date (Note) -
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Abstract
A process for making a fluoropolymer is disclosed. The process comprises solubilizing a fluoromonomer in solvent comprising a carbon dioxide fluid, and then polymerizing the fluoromonomer to produce a the fluoropolymer. A preferred solvent for carrying out the process is supercritical carbon dioxide; preferred fluoromonomers for carrying out the process are fluoroacrylate monomers such as 1,1-dihydroperfluorooctyl acrylate. The polymerization step is preferably carried out in the presence of an initiator such as azobisisobutyronitrile.
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