CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, PREPARATION METHOD THEREFOR AND USE THEREOF

CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, PREPARATION METHOD THEREFOR AND USE THEREOF

The present invention relates to an olefin polymerization catalyst, and disclosed are a catalyst component for olefin polymerization, a preparation method therefor and a use thereof. The catalyst component of the present invention comprises elemental magnesium, elemental titanium and an internal ele...

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Bibliographische Detailangaben
Hauptverfasser: DU, Chao, ZHOU, Junling, LIU, Tao, ZHANG, Xiaofan, CHEN, Long, GAO, Futang, ZHAO, Jin, YANG, Rui, XIA, Xianzhi, XIE, Lunjia, MA, Changyou, LIU, Yuexiang, YI, Zhuo, LING, Yongtai, XIE, Jijia, FENG, Zaixing, LI, Weili, REN, Chunhong, TAN, Yang
Format: Patent
Sprache:chi ; eng ; fre
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:The present invention relates to an olefin polymerization catalyst, and disclosed are a catalyst component for olefin polymerization, a preparation method therefor and a use thereof. The catalyst component of the present invention comprises elemental magnesium, elemental titanium and an internal electron donor; the internal electron donor comprises a phosphate ester, and an α-cyanosuccinate and/or a substituted α-cyanosuccinate, a molar ratio of the phosphate ester to the elemental magnesium being 0.0002-0.002:1. When the catalyst is used for olefin polymerization, especially for propylene polymerization, the obtained polymer has the characteristics of a high Z+1 average molecular weight and a good balance of rigidity and toughness. La présente invention concerne un catalyseur de polymérisation d'oléfines, et sont divulgués un composant catalyseur pour la polymérisation d'oléfines, son procédé de préparation et son utilisation. Le composant catalyseur de la présente invention comprend du magnésium élémentaire