Промышленные испытания новой модификации титан-магниевого катализатора полимеризации пропилена [PDF]
, 2002 Рассмотрены состав, свойства и основные области применения современных каталитических систем IV и V поколений для промышленного производства полимеров на основе пропилена.
Ионов, Андрей Рудольфович +5 more
core +2 more sources
Addition of a second alcohol in magnesium ethoxide synthesis as a way to vary the pore architecture of Ziegler-Natta catalysts [PDF]
Polyolefins Journal, 2015 In Ziegler-Natta olefin polymerization, the pore architecture of catalysts plays a crucial role in catalytic performances and polymer properties. While the type of preparation routes (such as chemical reaction and solution precipitation) greatly affects ...
Toshiaki Funako +3 more
doaj +1 more source
Characterization of phthalate internal donor in MgCl2 supported Ziegler-Natta catalyst by solid state 13C NMR [PDF]
Polyolefins Journal, 2022 Ziegler-Natta catalyst for propylene polymerization, which TiCl4 and di-alkyl phthalate were supported on MgCl2, was analyzed by solid state 13C NMR. It was confirmed that the spin-lattice relaxation time (“relaxation time” hereafter) of carbonyl group ...
Masayoshi Saito +4 more
doaj +1 more source
POLYMERIZATION OF STYRENE USING ZIEGLER – NATTA CATALYST TYPE TICL4/MGCL2 – EB /ALET3 [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2013 In this study Ziegler – Natta catalyst was prepared which is a multi component catalytic system composed of, titaniumtetrachloride (TiCl4) as a active material, anhydrous magnesium chloride MgCl2 as support (carrier) which distribute the active material,
AYAD A. UTTAR, ALI S. ABED
doaj +1 more source
In situ stabilization of polypropylene by lignin using a Ziegler-Natta catalyst [PDF]
Polyolefins Journal, 2014 A fourth-generation Ziegler-Natta catalyst was prepared to synthesize polypropylene (PP), which was stabilized by in situpolymerization employing lignin as antioxidant.
Maria Marques +3 more
doaj +1 more source
Beneficial influence of nanocarbon on the aryliminopyridylnickel chloride catalyzed ethylene polymerization [PDF]
, 2013 A series of 1-aryliminoethylpyridine ligands (L1―L3) was synthesized by condensation of 2-acetylpyridine with 1-aminonaphthalene, 2-aminoanthracene or 1-aminopyrene, respectively.
Durand, Jérôme +6 more
core +4 more sources
Comparative simulation study of gas-phase propylene polymerization in fluidized bed reactors using aspen polymers and two phase models [PDF]
, 2012 A comparative study describing gas-phase propylene polymerization in fluidized-bed reactors using Ziegler-Natta catalyst is presented. The reactor behavior was explained using a two-phase model (which is based on principles of fluidization) as well as
Hussaina M.A. +3 more
core +1 more source
Química Nova, 1997 The Ziegler-Natta catalyst and the polymerization thereof are systems which require careful handling and special treatment of chemicals. In spite of the use of inert atmosphere and dry chemicals, some Ziegler-Natta systems may present low activities or ...
Thaís H. S. Costa +4 more
doaj +1 more source
Determination of Optimal Reaction Temperature and Hydrogen Amount for Propylene Polymerization by a Mathematical Model [PDF]
Kemija u Industriji, 2019 Regarding the complexity of Ziegler-Natta catalyst kinetics in polypropylene polymerization, so far, there is no adequate model to determine the best process conditions for predicting average molecular weight and dispersity as the most crucial final ...
Gholam Hossain Varshouee +3 more
doaj +1 more source
Effects of Important Operating Parameters on Product Properties and Operation of HDPE Slurry Reactor [PDF]
علوم و تکنولوژی پلیمر, 2007 In this article, a complete model for the mixed flow slurry reactor for polymerization of ethylene to high density polyethylene in the presence of Ziegler-Natta catalyst is presented. In addition to the effects of the multiple active sites, the effect of
M. Soltanieh +3 more
doaj +1 more source