Process for making a fluoropolymer having nitrile and groups
Assignee3M Innovative Properties Company
InventorsWerner M.A. Grootaert, Klaus Hintzer, Kai Helmut Lochhaas, Gernot Lohr, Franz Marz
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Abstract
The present invention discloses a process for making a fluoropolymer having nitrile endgroups. The process comprises a free radical polymerization of one or more fluorinated monomers in the presence of a nitrile group containing salt or a nitrile group containing pseudohalogen compound.
Claims11
Process for making a fluoropolymer having nitrile endgroups, said process comprising a free radical polymerizing one or more fluorinated monomers in the presence of a nitrile group containing salt or a nitrile group containing pseudohalogen compound.
A nitrile group containing fluoroelastomer which is in the form of a solid, has nitrile groups at both ends and is represented by the formula
- NCX—(Rf)—XCN
- where X=O or S and Rf is a divalent fluoroelastomer chain.
Dependencies are inferred from the claim text.