Manufacture of fluoropolymer latex by dual surfactants

A process for preparing a fluoropolymer said process comprising:

• a) providing in a reaction vessel, an aqueous reaction medium, at least one fluoromonomer, optionally a chain transfer agent,
• i) at least one acrylic-glycol surfactant having at least one segment selected from polyethylene glycol segment, polypropylene glycol segment, and/or polytetramethylene glycol segment, with from 2 to 200 repeating units in a segment, and
• ii) at least one sulfur containing surfactant wherein the sulfur containing surfactant is non-fluorinated and comprises at least one of an alkylsulfonate, an alkyl sulfate surfactant, or mixtures thereof, and
• b) adding at least one radical initiator to said reaction vessel,
• c) initiating an emulsion polymerization of said fluoromonomer;
• to provide a fluoropolymer latex,
• wherein the total amount of surfactant(s) in the process is at least 110 ppm based on the total weight of the fluoromonomer(s) fed to the polymerization reaction.