Polyethylene with long chain branching and Ziegler-Natta catalyst for its preparation

摘要

Linear polyethylene containing long chain branching is obtained by polymerizing ethylene in the presence of a catalyst comprising a transition metal compound such as titanium chloride, an organoaluminum compound represented by the formula R₁R₂AlRp wherein R, & R. are the same or different hydrocarbyl groups having from 1 to 18 carbon atoms and Rp is a polymeric hydrocarbyl group containing long chain branching and an aluminum alkyl cocatalyst.