Ziegler-Natta catalyst and its use to prepare multimodal polyolefin

The present invention provides a method for tailoring the molecular weight distribution of a multimodal (e.g. bimodal) ethylene polymer having a lower molecular weight component and a higher molecular weight component comprising polymerising ethylene and optionally at least one further alpha olefin...

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Bibliographische Detailangaben
Hauptverfasser: BAECKMAN, MATS, IDELMANN, PETER, LINDROOS, JARMO, JOHANSSON, SOLVEIG, GAROFF, THOMAS, KO, YOUNG SOO, STALHAMMAR, MINNA, WALDVOGEL, PAEIVI
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The present invention provides a method for tailoring the molecular weight distribution of a multimodal (e.g. bimodal) ethylene polymer having a lower molecular weight component and a higher molecular weight component comprising polymerising ethylene and optionally at least one further alpha olefin in at least two stages, wherein at least one stage is carried out in a slurry phase in the presence of a Ziegler Natta catalyst comprising an electron donor which is an ether.