| abstract |
The invention relates to a process for the production of polyethylene and ethylene copolymers with a broad molecular weight distribution in the presence of a catalyst which is based on a solid magnesium-containing carrier of the atomic composition Mgx Aly Sim Cln Rp with x8, 1-9, 6; y0,075-0,56; m0,11-0,79; n16-20; p2.9-13 corresponding to 19-23 mass% Mg; 0.2-1.5 mass% Al; 0.3-2.2 mass% Si; Containing 60-72% by mass of Cl and 4.2-19% by mass of hydrocarbon R, 3-13.2% by mass of vanadium compound, the reaction of the transition metal compound with the solid carrier at a temperature of 293-373 K in the presence is carried out by carbon tetrachloride. The catalyst has higher activity and improved hydrogen controllability. |