Ethylene polymerization using N-Heterocyclic carbene complexes of silver and aluminum [PDF]
Designed Monomers and Polymers, 2023 Various transition metal catalysts have been utilized for ethylene polymerization. Silver catalysts have attracted less attention as the catalysts, but are potential for production of high molecular weight polyethylene.
Nanako Kimura +6 more
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Kinetics of ethylene polymerization over titanium-magnesium catalysts: The reasons for the observed second order of polymerization rate with respect to ethylene [PDF]
Polyolefins Journal, 2015 The data on the effect of ethylene concentration on polymerization rate for several modifications of modern highly active titanium–magnesium catalysts TiCl4/MgCl2 are presented.
Mikhail Matsko +3 more
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Synthesis and ethylene polymerization reaction of dendritic titanium catalysts [PDF]
Designed Monomers and Polymers, 2021 The 1.0 G dendrimer (C22H48N10O4),3,5-di-tert-butylsalicylaldehyde and TiCl4 · 2THF were used as the synthetic materials, and the dendritic salicylaldehyde imide ligand with substituent hindrance and its titanium catalyst were synthesized by the ...
Tianyu Lan +3 more
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Selective branch formation in ethylene polymerization to access precise ethylene-propylene copolymers [PDF]
Nature Communications, 2022 Selective branch formation from uncontrolled chain walking is a longstanding challenge to generate exclusively branched polyolefins. Here the authors report such desirable microstructures in ethylene polymerization enabled by a nickel catalyst at 30 °C ...
Yuxing Zhang +2 more
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Monomer effect on the chain transfer by diethyl zinc in olefin polymerization by metallocene catalysts [PDF]
Polyolefins Journal, 2021 The present paper systematically studies the homo- and copolymerization of ethylene or propylene using metallocene as catalyst and diethyl zinc as chain transfer agent to obtain the polyolefin waxes with narrow molecular weight distribution and with a ...
Wei Wang, Taoyi Zhang, Liping Hou
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Developments in Binuclear Late Transition Metal Catalysts for Ethylene Homo- and Copolymerization [PDF]
E3S Web of Conferences, 2023 Recent advances in the research of late transition metal (Ni) salicylaldimine bimetallic catalysts in ethylene polymerization and copolymerization of ethylene with comonomers have been introduced. The effect of positioning two polymerization-active metal
Cao Wenyao, Ren Chuanli, Liu Shaofeng
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Compressed ethylene phase states and their importance for the production of low density polyethylene [PDF]
Hemijska Industrija, 2006 In the last three decades the authors have published papers on the concept of the supra-molecular organization and the phase state of compressed ethylene gas and their effects on the mechanism and kinetics of free-radical ethylene polymerization.
Stoiljković Dragoslav +4 more
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Substituent effect of Cp2TiCl2 catalyst for ethylene polymerization: A DFT study [PDF]
Polyolefins Journal, 2023 The substituents on cyclopentadienyl (Cp) can regulate the electronic effect and hindrance of the active center in the metallocene catalyst. This modification can greatly change the catalytic activity of the catalyst and affect some features of the ...
Kefeng Xie +5 more
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Gas phase polymerization of ethylene towards UHMWPE [PDF]
TURKISH JOURNAL OF CHEMISTRY, 2020 For the first time, ultra-high molecular weight polyethylene (UHMWPE) was produced in gas phase process with a new fluidized bed concept where the solids are dispersed phase and the gas is bulk phase as opposed to conventional fluidized bed reactors (FBRs).
Gözde GEÇİM, Ertuğrul ERKOÇ
openaire +3 more sources
The charge percolation mechanism and simulation of Ziegler–Natta polymerizations. Part VII. Effects of the distribution of chromium active centers on silica on the polymerization of ethylene [PDF]
Journal of the Serbian Chemical Society, 2008 The charge percolation mechanism (CPM) of olefin polymerization in the presence of transition metal compounds has been applied to explain the polymerization of ethylene by silica supported chromium oxide.
DRAGOSLAV STOILJKOVIC +4 more
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