The present invention is directed to a method of producing a fluoropolymer which comprises polymerizing a radical polymerizable monomer in a defined reaction field, said radical polymerizable monomer comprising {HEAD ~ a fluorine} containing {TAIL ~ ethylenic monomer} and said defined reaction field being in supercriticality expression state with a monomer density monomer critical density ratio of not less than 1.1 
The present invention is directed to a method of producing a fluoropolymer which comprises polymerizing a radical polymerizable monomer in a defined reaction field , said radical polymerizable monomer comprising { HEAD ~ a fluorine } containing { TAIL ~ ethylenic monomer } and said defined reaction field being in supercriticality expression state with a monomer density monomer critical density ratio of not less than 1.1
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