This report describes propylene polymerization reactions with titanium complexes bearing carbamato ligands,Ti(O2CNMe2)Cl2 (I) and Ti(O2CR2)4 [R25NMe2 (II), NEt2 (III) and(IV)]. Combinations of these complexes and MAOform catalysts for the synthesis of atactic polypropylene, as confirmed by FT-IR, DSC and 13C NMR analysis. Effects of main reaction parameters on the catalyst activity were studied including the type of complex, solvent, temperature, and the [Al]/[Ti] molar ratio. The highest activity was observed when chlorobenzene was used as a solvent and AlMe3- depleted MAO was employed as a cocatalyst
Autori interni: | |
Autori: | Hayatifar, M.; Forte, C.; Pampaloni, Guido; Kissin, Y. V.; RASPOLLI GALLETTI, ANNA MARIA; Zacchini, S. |
Titolo: | Titanium Complexes Bearing Carbamato Ligands as Catalytic Precursorsfor Propylene Polymerization Reactions |
Anno del prodotto: | 2013 |
Digital Object Identifier (DOI): | 10.1002/pola.26816 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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