Method for the preparation of polyolefin

C - Chemistry – Metallurgy – 08 – F

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C08F 10/00 (2006.01) C08F 4/642 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2113806

- 33 - A B S T R A C T The present invention is a method, in the preparation of a polyolefin by the polymerization of an olefin in the presence of a catalyst, in which a catalyst system consist- ing of (A) a titanium compound, (B) a compound capable of. forming an ionic complex by reacting with a transition metal compound, (C) an organoaluminum compound and, optionally, (D) a non-polymerizable compound having a .pi. electron is used and a polyolefin or, in particular, a linear low- density polyethylene can be prepared with a good efficiency by forming a catalyst system exhibiting high activity without using a large amount of an organometallic compound.

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