Patent ID: 6995221

Claim:
A process for the polymerization of at least one ethylenically unsaturated monomer comprising: (a) preparing a free radical initiator comprised of at least one organic peroxide, other than a peroxydicarbonate, selected from the group consisting of dialkyl peroxides and diacyl peroxides by forming a mixture of at least one inorganic peroxide and an aqueous emulsion of at least one organic halide wherein the emulsion is comprised of droplets of the organic halide with diameters of less than 10 μm and wherein the mixture reacts to form an aqueous emulsion of the at least one organic peroxide; (b) adding to a polymerization reactor at least one ethylenically unsaturated monomer; (c) adding to the polymerization reactor the aqueous emulsion of the at least one organic peroxide; (d) conducting a polymerization reaction to the desired level of conversion of said ethylenically unsaturated monomer to form a polymer; (e) discharging the polymer from the polymerization reactor; and (f) stripping said ethylenically unsaturated monomer from said polymer.