Patent ID: 8871882

Claim:
A method for the preparation of a fluoropolymer, wherein the method comprises the step of: emulsion polymerization of a reaction mixture in an aqueous medium, the reaction mixture comprising: a) a fluoromonomer having the structure of wherein R 1 , R 2 , and R 3 are each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R 1 , R 2 , and R 3 is a fluorine atom, and wherein R is each independently a substituent on the styrenic ring, n is an integer from 0 to 5 representing the number of the substituents on the styrenic ring; b) an emulsion stabilizer combination comprising: i) an anionic surfactant wherein the anionic surfactant is in an amount ranging from about 8 to about 17 weight % based on the fluoromonomer, and ii) a cationic surfactant; wherein the cationic surfactant is from about 0.8 to about 5 weight % based on the fluoromonomer; and c) a free-radical initiator.