Loading patent…
AssigneePhillips Petroleum Company
InventorsBernd Peifer, Helmut G. Alt, M. Bruce Welch
Estimating the term…
Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The solid catalyst system is prepared by combining an aluminoxane with a metallocene having a substituent which has internal alkynyl unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the last reaction product mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.
A process for polymerizing ethylene comprising preparing a solid metallocene-containing catalyst system by
A process for polymerizing ethylene under slurry polymerization conditions in the presence of an alkane liquid diluent comprising contacting ethylene with a solid metallocene-containing catalyst system produced by the steps comprising:
Dependencies are inferred from the claim text.