PROCESS FOR PRODUCING AQUEOUS FLUOROPOLYMER DISPERSION

摘要

A process for producing by the phase separation method an aqueous fluoropolymer dispersion having a practically sufficiently high fluoropolymer concentration. The process for producing an aqueous fluoropolymer dispersion comprises a step (1) in which a nonionic surfactant having a cloud point is added to an aqueous fluoropolymer dispersion to be treated, a step (2) in which the mixture obtained through the step (1) is separated into a supernatant phase and an aqueous fluoropolymer dispersion phase in a specific temperature range, and a step (3) in which the supernatant phase is removed to obtain the aqueous fluoropolymer dispersion phase, and is characterized in that the upper limit of the specific temperature range is lower than the cloud point of the nonionic surfactant.