Catalytic ethylene polymerization by the titanium-polyhedral oligomeric silsesquioxane-Et3Al2Cl3 system
Titanium (IV) precursors anchored to alkyl substituted polyhedral oligomeric silsesquioxane (POSS) trisilanol and disilanol were prepared and characterized. These catalysts, formulated as [Ti-POSS(O ∩ O ∩ O)OPr i , 1 ] and [Ti-(POSS(O ∩ O)) 2 , 2 ], were found to be active in the polymerization of e...
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| Veröffentlicht in: | Reaction kinetics, mechanisms and catalysis mechanisms and catalysis, 2011-12, Vol.104 (2), p.369-375 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Titanium (IV) precursors anchored to alkyl substituted polyhedral oligomeric silsesquioxane (POSS) trisilanol and disilanol were prepared and characterized. These catalysts, formulated as [Ti-POSS(O
∩
O
∩
O)OPr
i
,
1
] and [Ti-(POSS(O
∩
O))
2
,
2
], were found to be active in the polymerization of ethylene at high temperatures in combination with ethylaluminum sesquichloride (Et
3
Al
2
Cl
3
) as a co-catalyst. The polyethylene products so obtained are linear, crystalline and display narrow dispersities. The effect of various reaction parameters on the catalyst performance is described. |
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| ISSN: | 1878-5190 1878-5204 |
| DOI: | 10.1007/s11144-011-0356-6 |