Ammonium,Potassium and Sodium persulfates areused as initiators for emulsion polymerization reactionsin the preparation of acrylics,"polyvinyl chlorides,polystyrenes, and neoprene.They are used as polymer-ization initiators in the manufacture of synthetic rubber(styrene butadiene and isoprene) for automobile andtruck tires. Persulfate initiation is used to prepare latexpolymers for paints, coatings, and carpet backing.