PROCESS FOR PRODUCING POLYMERS WITH MULTI-MODAL MOLECULAR WEIGHT DISTRIBUTIONS

摘要

The invention provides a continuous process for catalytically polymerizing a monomer feed of ethylene and at least one comonomer which comprises introducing a catalyst including a bulky ancillary ligand transition metal compound and monomer feed in an upstream reaction zone for polymerization, introducing further catalyst in a downstream reaction zone for further polymerization, the peak temperature in the downstream reaction zone being at least 50 DEG C higher than in the upstream zone and being above 100 DEG C. The process economically produces polymer of good properties which is melt processable.