Olefin polymerization with pyridine moiety-containing...

Details Olefin polymerization with pyridine moiety-containing... Olefin polymerization with pyridine moiety-containing...

C - Chemistry, Metallurgy

08

F

C08F 4/02 (2006.01) C08F 4/642 (2006.01) C08F 110/02 (2006.01)

Patent

CA 2531539

An olefin polymerization process is disclosed. The polymerization is performed in the presence of a clay, an activator, and a transition metal complex that has at least one pyridine moiety-containing ligand. The presence of clay increases the catalyst activity. The process is suitable for making ultra-high molecular weight polyethylenes (UHMWPE). The UHMWPE produced has increased bulk density.

L'invention concerne un procédé de polymérisation d'oléfines, selon lequel la polymérisation est effectuée en présence d'un argile, d'un activateur et d'un complexe de métaux de transition comprenant au moins un ligand contenant une fraction pyridine. La présence de l'argile augmente l'activité des catalyseurs. Ce procédé peut être mis en oeuvre pour produire des polyéthylènes à poids moléculaire ultra-élevé (UHMWPE). L'UHMWPE produit par ce procédé possède une densité apparente accrue.

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