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Mechanism of deactivation and reactivation of Ziegler-Natta catalysts for propene polymerization

✍ Scribed by Alain Guyot; Roger Spitz; Jean-Philippe Dassaud; Corinne Gomez

Publisher
Elsevier Science
Year
1993
Weight
441 KB
Volume
82
Category
Article
ISSN
0304-5102

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Chain propagation rate constants for gas-phase polymerization of propene and 1-butene with Ziegler-Natta catalysts
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## Abstract ^13^C NMR analysis of propene/1‐butene block copolymers obtained by gas‐phase polymerization with Ziegler‐Natta catalysts allows the determination of the propagation rate constants for the homopolymerization of the two monomers. They are very similar for the Solvay type catalyst δ‐TiCl~

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## Abstract MgCl~2~‐supports for Ziegler‐Natta polymerization processes were prepared by an activation method based on the thermal removal of ethyl formate (EF) from adducts between EF and MgCl~2~. The various steps of activation were investigated by X‐ray diffraction (XRD) and infrared spectroscop