148799-45-5Relevant articles and documents
Mono, di and tetranuclear ansa zirconocene complexes as catalysts for the homogeneous and heterogeneous polymerization of ethylene
Alt, Helmut G.,Ernst, Rainer,B?hmer, Ingrid
, p. 177 - 185 (2003)
Mono, di and tetranuclear ansa zirconocene complexes have been synthesized and characterized. After activation with methylalumoxane (MAO) these catalysts were used for the homogeneous and heterogeneous polymerization of ethylene. The properties of the catalysts and the produced polymers were compared. The multinuclear catalysts show a different performance than the corresponding mononuclear derivatives. The tetranuclear catalysts have the lowest activities because of steric crowding.
TRANSITION METAL COMPOUND AND CATALYST COMPOSITION INCLUDING SAME
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Paragraph 395-397; 404-407, (2022/01/24)
The present invention, implementing excellent catalytic activity in polyethylene polymerization, useful for producing polyethylene having a high intramolecular chain branch content without sacrificing physical properties such as molecular weight, melting point, density, new transition metal compounds, catalyst compositions comprising it, and a method for producing polyethylene using it.