Patent ID: 8158734

Claim:
A process for preparing a fluoropolymer comprising polymerizing a monomer mixture consisting of 70 to 100 mole percent of vinylidene fluoride and 0 to 30 mole percent of one or more other fluoromonomers in an aqueous medium comprising from 100 ppm to 2 percent, based on the weight of the fluoropolymer solids of at least one emulsifier consisting of a non-fluorinated, non-ionic emulsifier containing polyethylene glycol and/or polypropylene glycol segments with repeating units between 2 to 200, and using as the initiator one or more initiators selected from the group consisting of ammonium persulfate, alkali metal salts of persulfates, dialkyl peroxides, diacylperoxides, peroxyesters, and peroxydicarbonates.