SIMULTANEOUSLY CHLORINATING AND GRAFTING A CURE SITE ONTO POLYETHYLENE IN AN AQUEOUS SUSPENSION

摘要

A chlorinated polyethylene elastomer is made by mixing polyethylene with water to form an aqueous suspension of the polyethylene and simultaneously chlorinating and grafting a cure site on the polyethylene by mixing and heating the aqueous suspension containing a free radical initiator, gaseous chlorine and about 0.1-1.5 moles per kg of polyethylene of an alkyl or alkylaryl monester of butenedioic acid having the formulas or mixtures thereof, where R1 is an alkyl or alkylaryl group having from about 8-20 carbon atoms and R2 and R3 are hydrogen, chlorine or an alkyl group having from about 1-4 carbon atoms.