Alternating copolymerization of ethylene and 1-octene with meso-[dimethylsilylbis(2-methyl-1-indeny)]zirconium dichloride-methylaluminoxane as catalyst system

Copolymerizations of ethylene and a-olefins with homogeneous metallocene catalysts generally give the corresponding random copolymers with narrow molecular mass distributions. In this study, we have conducted the copolymerization sf ethylene and 1-octene with the meso-Me2Si(2-Me-1-Ind)(2)ZrCl2-methy...

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Bibliographic Details
Published inMacromolecular rapid communications. Vol. 18; no. 9; pp. 883 - 889
Main Authors Uozumi, T, Miyazawa, K, Sano, T, Soga, K
Format Journal Article
LanguageEnglish
Published BASEL Huthig & Wepf Verlag 01.09.1997
Subjects
Physical Sciences
Polymer Science
Science & Technology
METHYLALUMOXANE
HYDROOLIGOMERIZATION
POLYPROPYLENE
METALLOCENE DERIVATIVES
PROPENE
OLEFIN POLYMERIZATION
ZIRCONOCENE
OLIGOMERIZATION
PROPYLENE POLYMERIZATIONS
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Summary:Copolymerizations of ethylene and a-olefins with homogeneous metallocene catalysts generally give the corresponding random copolymers with narrow molecular mass distributions. In this study, we have conducted the copolymerization sf ethylene and 1-octene with the meso-Me2Si(2-Me-1-Ind)(2)ZrCl2-methylaluminoxane (MAO) catalyst system, and analyzed the microstructure of the resulting copolymers in detail. The content of the alternating [EO] sequence increases markedly with an increase in the feed ratio of 1-octene to ethylene, reaching over 95% under appropriate copolymerization conditions. We have thus succeeded in preparing the first sample of alternating olefin copolymers.
ISSN:1022-1336
DOI:10.1002/marc.1997.030180917