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Published in 2019 at "Catalysis Communications"
DOI: 10.1016/j.catcom.2018.12.008
Abstract: Abstract Propylene polymerization with two TiCl4/MgCl2 catalysts (Cat-1: Ti 0.1%; Cat-2: Ti 1.0%) showed different responses to (cyclo-C5H9)2Si(OCH3)2 (De) addition. Cat-1 was deactivated more than Cat-2 by De. Amount of three groups of active centers…
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Keywords:
cat;
mgcl2;
propylene polymerization;
enhancing stereoselectivity ... See more keywords
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Published in 2021 at "Industrial & Engineering Chemistry Research"
DOI: 10.1021/acs.iecr.1c00190
Abstract: ω-Alkenylmethyldichlorosilane-assisted propylene polymerization for the synthesis of long-chain-branched polypropylene (LCB-PP) was applied in a liquid bulk polymerization process to verify its ind...
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Keywords:
assisted propylene;
propylene polymerization;
alkenylmethyldichlorosilane assisted;
synthesis long ... See more keywords
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Published in 2020 at "Macromolecules"
DOI: 10.1021/acs.macromol.0c01981
Abstract: To better understand the substituent effect of cyclic catalysts on propylene polymerization, a series of cyclic bis(phenoxyimine) titanium catalysts bearing different size substituents at the ortho...
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Keywords:
titanium catalysts;
propylene polymerization;
cyclic bis;
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Published in 2021 at "Dalton transactions"
DOI: 10.1039/d1dt00645b
Abstract: In this work we systematically studied the effects of modifications of substituents on the performance of the isospecific zirconocene-based catalyst family, Me2Si(2-Alk-4-(N-carbazolyl)Ind)ZrX2 (X = Cl, Me), wherein the progenitor was shown to be particularly suitable…
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Keywords:
ansa metallocenes;
polymerization;
metallocenes bearing;
symmetric ansa ... See more keywords
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Published in 2021 at "Catalysts"
DOI: 10.3390/catal11050601
Abstract: This article describes a MgCl2-supported Ziegler-Natta catalyst for propylene polymerization prepared via an in situ emulsion technique with new surfactants. The effect of preparation conditions such as the TiCl4/toluene molar ratio, TiCl4-contacting temperature, amount of…
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Keywords:
ziegler natta;
propylene polymerization;
catalyst;
mgcl2 supported ... See more keywords