Direct cross-linking process for the preparation of perfluoroalkyl crosslinked fluoropolymer having perfluoroether pendant groups

摘要

the present invention, a fluoropolymer having a cyano functionalized perfluoroether pendant group, perfluoroether novel thermal method for converting the new perfluoroalkyl crosslinked fluoropolymer having pendant groups. The method includes the step of heating in the presence of Cl-F to a temperature in the range of fluoropolymers 200~300 having a cyano functionalized perfluorinated polyether pendant groups. Fluoropolymer having a cyano functionalized perfluoroether pendant group is first formed into a shaped article is subjected to in-situ treatment of this shaped article is then in the Cl-F.