BigPatents India

The present invention relates to a method of preparing a fluorinated polymer including repeating units derived from a liquid fluorinated monomer that has a boiling point of at least 50 C and is selected from the group consisting of fluorinated olefins, fluorinated allyl ethers and fluorinated vinyl ethers that do not contain hydrolysable groups that upon hydrolysation yield ionic groups, the method comprising the steps of: -pre-emulsifying said liquid fluorinated monomer in water with the aid of a fluorinated emulsifier to obtain an aqueous emulsion of said fluorinated monomer; and -polymerizing a thus obtained emulsified liquid fluorinated monomer.