Olefin polymerization catalyst system

Details Olefin polymerization catalyst system Olefin polymerization catalyst system

2006-10-17

2006-10-17

Choi, Ling-Sui (Department: 1713)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

C502S103000, C502S115000, C502S123000, C526S348000, C526S124200, C526S124300, C526S128000, C526S141000

Reexamination Certificate

active

07122497

ABSTRACT:
A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises a cocatalyst and a supported transition metal prepared from a halogen-containing Group 4–6 transition metal compound and an organoaluminum-siloxane containing mixture. The latter mixture, which is prepared from an organoaluminum compound and an organomagnesium-siloxane reaction product, incorporates a chelating ligand. The invention includes a method for making the catalyst system and a process for polymerizing olefins using the catalyst system. The process is convenient and avoids expensive catalyst components used in known olefin polymerization processes.

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