Patent Number: 6,166,157

Title: Iodonitriles as chain transfer agents in the manufacture of perfluoropolymers

Abstract: Iodoperfluoroalkylnitriles are useful as chain transfer agents in the free radical polymerization of vinyl monomers to form perfluoropolymers. These nitrites provide end groups, which may take part in a cross-linking reaction, if desired, and also have a relatively low toxicity. The resulting perfluoropolymers are useful as molding resins and elastomers, particularly for parts where good chemical resistance and/or high temperature resistance are desirable.

Inventors: Hung; Ming-Hong (Wilmington, DE), Logothetis; Anestis Leonidas (Wilmington, DE), Yang; Zhen-Yu (Wilmington, DE)

Assignee: E. I. du Pont de Nemours and Company

International Classification: C08F 14/00 (20060101); C08F 14/18 (20060101); C08F 014/18 (); C08F 014/26 ()

Expiration Date: 12/26/2013