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NMR studies on the mechanism of polymerization of cyclic olefins by a molybdenum catalyst

✍ Scribed by Jay A. Johnston; Peter L. Rinaldi; Michael F. Farona


Publisher
Elsevier Science
Year
1992
Weight
638 KB
Volume
76
Category
Article
ISSN
0304-5102

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πŸ“œ SIMILAR VOLUMES


Mechanism of olefin polymerization by a
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A mechanistic study has been carried out on the homogeneous olefin polymerizationroligomerization catalyst formed Ε½ . from Cp ZrMe and methylaluminoxane, MeAlO , in toluene. Formal transfer of CH from Zr to Al yields low 2 2 x 3 q wΕ½ .Ε½ . x concentrations of Cp ZrMe solvated by Me AlO MeAlO . The ca

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## Abstract Ethylene polymerizations and norbornene oligomerizations catalysed by Cp~2~Ti^13^CH~3~Cl/MAO (Cp: cyclopentadienyl; MAO: methylaluminoxane) mixtures have been carried out at different temperatures (from ‐20Β°C to 20Β°C), in order to test the validity of carbene mechanisms in α‐olefin poly

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There is further consideration of the model of the active site of polymerization on heterogeneous Ziegler-Natta catalysts. It is located on basal planes of lattice crystals of type a-TiCl3 or VCI3 and has two vacancies at the transition metal atom. One of these vacancies is blocked by the helical po