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Dialkylaminoethyl‐Functionalized ansa ‐Zirconocene Dichlorides: Precatalysts for the Regulation of the Molecular Weight Distribution of Polyethylene
Author(s) -
Müller Christian,
Lilge Dieter,
Kristen Marc Oliver,
Jutzi Peter
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(20000218)39:4<789::aid-anie789>3.0.co;2-f
Subject(s) - polyethylene , molar mass distribution , polymerization , polymer chemistry , chemistry , ethylene , distribution (mathematics) , organic chemistry , catalysis , polymer , mathematics , mathematical analysis
The systematic regulation of the molecular weight distribution in the MAO‐activated polymerization of ethylene has been realized by using amino‐functionalized ansa ‐zirconocene dichlorides as precatalysts (one of the active species is shown). The formation of high‐ and low‐molecular‐weight polyethylene with a unimodal distribution as well as the formation of polyethylene with a bimodal distribution is possible by varying the polymerization temperature.