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Ansa-metallocene polymerization catalysts: Effects of the bridges on the catalytic activities

✍ Scribed by Baiquan Wang


Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
373 KB
Volume
250
Category
Article
ISSN
0010-8545

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✦ Synopsis


Ansa-metallocene complexes have been extensively studied as the precatalysts for olefin polymerization. The bridges have important effects on the activities of the catalysts and polymer properties such as molecular weight and tacticity, mainly by altering the framework of the catalysts. Here, we review the effects of the structures of ansa-metallocene complexes on the catalytic activities, especially the effects of the bridges on the catalytic activities.


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## Abstract Catalytic activity during the formation of polyethylene (PE)/clay nanocomposites by __in situ__ polymerization with metallocenes was studied. Ethylene polymerization was carried out with the homogeneous metallocene in the presence of the clay particles and using the clay‐supported metal