| abstract |
To provide a fluororesin which does not substantially contain perfluorooctanoic acid or its salt, and which has a low residual amount of a fluorinated emulsifier. n A fluororesin which is obtained by emulsion-polymerizing a fluorinated monomer in an aqueous medium containing a fluorinated emulsifier of the formula (1): n n XCF 2 CF 2 (O) m CF 2 CF 2 OCF 2 COOA n nwherein X is a hydrogen atom or a fluorine atom, A is a hydrogen atom, an alkali metal or NH 4 , and m is an integer of from 0 or 1, and coagulating the obtained aqueous emulsion, followed by drying, wherein the residual amount of the fluorinated emulsifier of the formula (1) is at most 10 ppm. |