Fluoropolymer dispersion and process for producing fluoropolymer dispersion

The invention provides a method for producing a dispersion wherein a fine particle comprising a fluoropolymer having a sulfonic acid group and/or carboxyl group is dispersed in an aqueous dispersion medium, which method comprises hydrolyzing in an aqueous medium, -SO 2 X 1 (wherein X 1 is a halogen atom) and/or -COZ 1 (wherein Z 1 is C 1-4 -alkoxy) present in a fluoropolymer precursor to thereby give the fluoropolymer. Also the invention provides a fluoropolymer dispersion obtainable by the method of the present invention.