Production of high solids containing polyethylene emulsions

摘要

Stable polyethylene emulsions are produced having a solids content of at least about 30% by weight in a polymerization process without the necessity of a concentration step by contacting ethylene with an aqueous reaction medium containing from about 0.5 to about 1.5 weight percent of a water soluble persulfate initiator and from about 5.5 to about 10.0 weight percent of an alkyl benzene sulfonate emulsifier and allowing the reaction to proceed until at least about 30 weight percent solids level is obtained. The resulting polymeric emulsions are stable and surprisingly have superior properties to polyethylene emulsions which are conventionally produced at lower solids levels and then concentrated to the higher solids level.