A CATALYST FOR THE PRODUCTION OF LINEAR LOW DENSITY POLYETHYLENE

摘要

The invention is directed to a catalyst for the production of linear low density polyethylene. The catalyst is obtained by an one pot process comprising the steps (1) reacting a support with a compound having the formula RMgX or MgR1R2, wherein R, R1 and R2 are selected from the group consisting of alkyl, cycloalkyl, aryl or alkaryl, and X is selected from the group consisting of halogen, OR3 or OC(O)R4 wherein R3 and R4 are alkyl groups containing 2-50 carbon atoms (2) reacting the magnesium treated support with a compound which is able to react with unreacted magnesium units and (3) reacting the product obtained in step (2) with a compound containing a group IV transition metal component wherein the titanium loading of the catalyst ranges between 1.2 % by weight and 6.0 % by weight relative to the total weight of the catalyst.