Ziegler-Natta catalyst for tuning MWD of polyolefin, method...

Details Ziegler-Natta catalyst for tuning MWD of polyolefin, method... Ziegler-Natta catalyst for tuning MWD of polyolefin, method...

2005-07-12

2005-07-12

Choi, Ling-Sui (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S124100, C526S123100, C526S124200, C526S124300, C526S158000, C502S103000, C502S115000, C502S116000, C502S134000, C502S132000

Reexamination Certificate

active

06916895

ABSTRACT:
A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with halogenating/titanating agents, an organoaluminum preactivating agent, and a heat treatment. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution of the resulting polyolefins.

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