Patent ID: 8236923

Claim:
A method of producing a fluorine-containing polymer, comprising conducting an addition polymerization of a fluorine-containing compound having 2 or more terminal fluorine-containing vinyl groups each directly bonded to an oxygen atom per molecule, and a compound having 2 or more groups represented by —XH, where X represents an oxygen atom or a sulfur atom, wherein the fluorine-containing compound having 2 or more terminal fluorine-containing vinyl groups each directly bonded to an oxygen atom per molecule is a compound represented by formula (I): wherein Rf 1 represents a perfluoroalkylene group; each of Rf 2 and Rf 3 independently represents a fluorine atom, a perfluoroalkyl group or a perfluoroalkoxy group; and at least two among Rf 1 , Rf 2 and Rf 3 may bond to each other to form a ring structure.