The method of manufacturing preparation and perfluoroelastomer perfluoroelastomer aqueous dispersion

Using certain fluorinated surfactant, to provide a method of manufacturing a preparation and perfluoroelastomers sufficient number of particles and the rate of polymerization capable of realizing the perfluoroelastomer aqueous dispersion. In the presence of 2 parts by mass or more of the specific fluorine-containing surfactant in aqueous medium 100 parts by weight, the perfluoro monomer to obtain an aqueous dispersion containing a perfluoroelastomer particles by emulsion polymerization in an aqueous medium a method for producing a perfluoroelastomer aqueous dispersion which comprises.