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Ethylene Polymerization Using (n-BuCp)$_{2}ZrCl_{2}$ Catalyst Activated with a Cross-linked MAO-Supported Cocatalyst  

Yoon, Keun-Byoung (Optical Interconnection Team, Electronics and Telecommunications Research Institute (ETRI))
Publication Information
Macromolecular Research / v.12, no.4, 2004 , pp. 336-341 More about this Journal
Abstract
A new type of cross-linked methylaluminoxane (MAO)-supported cocatalyst has been prepared by the reaction of a soluble MAO and a cross-liking agent such as an aromatic diamine compound. The cross-linked MAO-supported cocatalyst was used for the polymerization of ethylene in the presence of bis(n-butylcyclopentadienyl) zirconium dichloride, (n-BuCp)$_2$ZrCl$_2$. The catalyst activity of (n-BuCp)$_2$ZrCl$_2$ cocatalyzed with the new supported cocatalyst was higher than that of the commercial silica-supported MAO (SMAO) cocatalyst. The molecular weight and the bulk density of the polyethylene produced by using the new supported cocatalyst were slightly higher than those of polyethylene synthesized using commercial SMAO. The resulting polyethylene particles possess spherical morphologies with very few fine particles.
Keywords
cross-linked MAO supported cocatalyst; ethylene polymerization; spherical morphology; ;
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Times Cited By Web Of Science : 7  (Related Records In Web of Science)
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