An object of the present invention is to obtain an aqueous dispersion of polytetrafluoroethylene in which compounds containing fluorine are removed or reduced. The present invention is a method for producing an aqueous dispersion of purified polytetrafluoroethylene, the method including: removing or reducing a compound represented by Formula (1) or (2) below from an aqueous dispersion of polytetrafluoroethylene obtained using a hydrocarbon surfactant:
Formula (1): (H-(CF2)m-COO)pM1; or
Formula (2): (H-(CF2)n-SO3)qM2.
本发明的目的是获得一种聚
四氟乙烯水分散液,其中含
氟化合物被去除或还原。本发明是一种生产纯化聚
四氟乙烯水分散液的方法,该方法包括:从使用烃类表面活性剂获得的聚
四氟乙烯水分散液中除去或还原下式(1)或(2)所代表的化合物:
式 (1):(H-(
CF2)m-COO)pM1;或
式 (2):(H-(
CF2)n-SO3)qM2。