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
doaj +1 more source
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
doaj +3 more sources
Decompositions in the production of low density polyethylene: Reasons, consequences and prevention [PDF]
Hemijska Industrija, 2007 In the production of low density polyethylene by free radical polymerization of ethylene at high pressure, ethylene and polyethylene occasionally decompose to carbon, hydrogen and methane resulting in an enormous increase of pressure and temperature ...
Stoiljković Dragoslav M. +3 more
doaj +1 more source
Dissymmetric dinuclear transition metal complexes as dual site catalysts for the polymerization of ethylene [PDF]
Polyolefins Journal, 2014 A series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization, by coupling the allylated a-diimine complexes of the metals Ti, Zr, V, Ni and Pd with the ansa-zirconocene complex [C5H4-SiH(Me)-C5H4]ZrCl2 ...
Haif Alshammari, Helmut G. Alt
doaj +1 more source
Bulletin of Chemical Reaction Engineering & Catalysis, 2020 This study aims to investigate the influences of a combination of cocatalysts including triethylaluminum (TEA) and tri-n-octylaluminum (TnOA) for activation of a commercial Ti-based Ziegler-Natta catalyst during ethylene polymerization and ethylene/1 ...
Thanyaporn Pongchan +2 more
doaj +1 more source
Frontiers in Chemistry, 2022 Most pyridine-imine Ni(II) and Pd(II) catalysts tend to yield low-molecular-weight polyethylene and ethylene-based copolymers in olefin insertion polymerization, as the unilateral axial steric structure of such complexes often cannot provide effective ...
You Ge +7 more
doaj +1 more source
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 VI. Mechanism of ethylene polymerization by supported chromium oxide [PDF]
Journal of the Serbian Chemical Society, 2007 Despite intensive research over the last 50 years, many questions concerning ethylene polymerization by supported chromium oxide are still unanswered. Hence, the very fundamental issues of this polymerization are discussed in this paper. It is shown that
DRAGOSLAV STOILJKOVIC +4 more
doaj +3 more sources
Inhibiting the Thermal Gelation of Copolymer Stabilized Nonaqueous Dispersions and the Synthesis of Full Color PMMA Particles [PDF]
, 2016 Polymeric particle dispersions have numerous potential applications; currently one of the most relevant is their use as inks in electrophoretic displays.
Simon J. Holder (1866523) +7 more
core +1 more source
System Identification for Experimental Study for Polymerization Catalyst Reaction in Fluidized Bed [PDF]
, 2011 In this work, system identification method is used to capture the reactor characteristics of production rate of polyethylene (PE) based on published experimental data. The identification method is used to measure the percentage effect on the production
Ahmmed S. Ibrehem, Ibrehem, A. S.
core +1 more source