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Polymerization of propene with enantiomorphic site catalysts, 1. A statistical analysis

✍ Scribed by Giuseppe Di Silvestro; Piero Sozzani; Alberto Terragni

Book ID
102940445
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
940 KB
Volume
197
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Recently we proposed a stereochemical classification of stereorigid metallocene catalysts according to their symmetry; statistical models of increasing complexity for the polymerization of propene based on the alternating mechanism have been developed. The general model agrees with the alternating mechanism and accounts for the most important stereochemical error (skipped insertion) and for the effect of the solvent and of polymerization temperature. Analysis of literature data of pentad concentrations for syndiotactic polypropylenes shows that the skipped insertion is more probable at high polymerization temperature, at low monomer pressure and in polar solvents.

πŸ“œ SIMILAR VOLUMES

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