| 摘要 |
A process for producing a procatalyst for the production of linear low density ethylene polymers comprising the steps of contacting: (a) an inorganic support; (b) an aluminium compound of formula (1): R3-N,A1C1n (1) wherein R is a C1-C20 hydrocarbyl group or a C1-C20 hydrocarboxy group, n is 1 or 2; (c) a compound/mixture comprising hydrocarbyl and/or hydrocarbyl oxide linked to magnesium; (d) a titanium compound of formula (2): (OR')4-xTiC1x (2) wherein R' is a C2-C20 hydrocarbyl group and X is an integer from 0 to 4; (e) an electron donor. The invention also included a method for preparing a polymerisation catalyst, components thereof, and polyethylene produced using said catalysts. |
