Many polymers are produced by emulsion polymerization. After completion of the chemical polymerization process the product is basically contained in the micelles that are stabilized by the emulsifier. In order to separate the micelles from the solvent, which is normally water, Calcium Chloride can be utilized. CC tech® will increase the ionic strength in the aqueous phase until the micelles are no longer kept apart by electrostatic forces and instead coalesce. The polymer product can then be removed from the solvent with by e.g. filtration or sedimentation.
Processes that utilize Calcium Chloride include synthetic rubber and impact modifiers.