| abstract |
An improved process for copolymerizing ethylene with an alpha-olefin in the presence of a polymerization catalyst composed of (a) a catalyst component containing titanium and halogen and (b) an organometallic compound, wherein the improvement comprises bringing said catalyst component into contact with an activity inhibitor either prior to activation or after said catalyst component has been activated with said organometallic compound, and subsequently copolymerizing ethylene with an alpha-olefin. |