PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes 5 contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a...

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Bibliographic Details
Main Authors Lue, Ching-Tai, Rix, Francis C, Goode, Mark G, Kao, Sun-Chueh, Li, Dongming
Format Patent
LanguageEnglish
Published 02.04.2020
Subjects
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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Summary:Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes 5 contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C 5HaRIb)(C 5HcR2)HfX 2 . The second catalyst compound comprises the following formula: R4SiR 10 4 (A) wherein each R3 or R4 is independently H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, wherein each R3 or R4 may be the same or different, and each X is independently a leaving group selected from a labile hydrocarbyl, a substituted hydrocarbyl, a heteroatom group, or a divalent radical that links to an R group.
Bibliography:Application Number: AU20190200925