Synthesis, characterization and ethylene polymerization by metallasilsesquioxane

Soluble complexes of group (IV) metallocenes anchored on a substituted polyhedral oligomeric silsesquioxane trisilanol support were prepared and characterized. These catalyst precursors formulated as [M(O^O^O)X] are found to be active in polymerization of ethylene at high temperature in combination...

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Veröffentlicht in:	Polymers for advanced technologies 2013-05, Vol.24 (5), p.441-445
Hauptverfasser:	Mehta, Akshay, Tembe, Gopal, Białek, Marzena, Parikh, Parimal, Mehta, Girish
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences catalyst synthesis Catalysts Crystal structure Displays Ethylene ethylene polymerization Exact sciences and technology micronized polyethylene NMR of polymer Organic polymers Physicochemistry of polymers Polyethylenes polyhedral oligomeric silsesquioxane Polymerization Precursors Preparation, kinetics, thermodynamics, mechanism and catalysts Waxes
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Zusammenfassung:	Soluble complexes of group (IV) metallocenes anchored on a substituted polyhedral oligomeric silsesquioxane trisilanol support were prepared and characterized. These catalyst precursors formulated as [M(O^O^O)X] are found to be active in polymerization of ethylene at high temperature in combination with ethylaluminum sesquichloride (Et3Al2Cl3, EASC) as co‐catalyst. The polyethylene obtained by these catalysts is linear, crystalline and displays narrow dispersity. The unique low molecular weight PE formed in this reaction exhibits properties comparable to commercial micronized PE waxes that have potential industrial applications in surface coating and ink formulations. Copyright © 2013 John Wiley & Sons, Ltd.
ISSN:	1042-7147 1099-1581
DOI:	10.1002/pat.3100