MgCl2 Support Preparation Techniques and Their Effects on Ziegler-Natta Catalysts Performance in Propylene Polymerization [PDF]
علوم و تکنولوژی پلیمر, 2013 A primary adduct of MgCl2.3.3EtOH (A0) was prepared by melt quenching and then it was further dealcoholated by thermal and chemical methods. In thermal dealcoholation, two different support samples with MgCl2.2.7EtOH (A1) and MgCl2.1.8EtOH (A2) formulas ...
Najmeh Hadian +3 more
doaj +1 more source
Macromolecular Rapid Communications, Volume 46, Issue 20, October 20, 2025.This review discusses the progress of vapor‐deposited polymer structures, from simple thin films and surface microstructures to complex 3D architectures and monoliths. It covers fabrication methods, polymerization mechanisms, and processes for fabricating these structures. The applications of these polymers are discussed, focusing on device integration
Theresia Cecylia Ramli +6 more
wiley +1 more source
Ti+4 determination in Ziegler–Natta polymerization catalysts via UV‒vis spectroscopy method [PDF]
Polyolefins JournalThe determination of Ti+4 in Ziegler–Natta catalysts is highly relevant for industrial plants that use Ziegler–Natta (ZN) catalysts based on TiCl4 as a source of titanium.
Jonas Biagini, Joao Henrique dos Santos
doaj +1 more source
Study of Ethylene Polymerization Kinetics by TiCl4/Mg(OC2H5)2 Catalyst and Determination of the Active Sites Concentration [PDF]
علوم و تکنولوژی پلیمر, 2008 Ethylene was polymerized in slurry phase over a TiCl4/Mg(OC2H5)2 catalyst activated by Al(C2H5)3. It was shown experimentally that mass transfer resistance has no effect on polymerization kinetics.
S. Hakim, M.M. Mortazavi
doaj +1 more source
Improving the efficiency of high-temperature processes for producing lower olefins via deep-processing of by-products [PDF]
, 2016 Processes for producing lower olefins are critically examined. It is noted that pyrolysis of various types of hydrocarbon is still the main process of obtaining ethylene and propylene, and is accompanied by the formation of considerable amounts of by ...
Bondaletov, Vladimir Grigoryevich +1 more
core +2 more sources
Synthesis of High Isotactic and High Melt Flow Polypropylene in Liquid Propylene [PDF]
علوم و تکنولوژی پلیمر, 2007 This is a report on the study of high melt flow, highly isotactic polypropylene homopolymer synthesized in liquid monomer using a fifth generation Ziegler-Natta catalytic system.
M. Emami +3 more
doaj +1 more source
50th Anniversary Perspective: Living Polymerization—Emphasizing the Molecule in Macromolecules [PDF]
, 2017 The ideal of living polymerization has defined research in polymer chemistry over the past 50 years. In this Perspective, we present the case that this concept has enabled the treatment of polymers as organic molecules, rather than impure mixtures of ...
Grubbs, Robert B., Grubbs, Robert H.
core
Carbon Dioxide, a Solvent and Synthon for Green Chemistry [PDF]
, 2005 Carbon dioxide is a renewable resource of carbon when we consider the reuse of existing CO2 as a carbon source for producing chemicals. The development of new applications is of major interest from the point of view of carbon dioxide sequestration and ...
Ballivet-Tkatchenko, D +2 more
core +1 more source
Revista Técnica de la Facultad de Ingeniería, 2011 The properties of supported Ziegler-Natta catalysts depend mostly on the preparation of the support. Four kinds of Ziegler-Natta catalysts consisting of TIC4 supported on MgCh were prepared, differting mainly by the method used to prepare the support ...
F. Medina +4 more
doaj
Technology Strategies in the Knowldge Economy. The Licensing Activity of Himont [PDF]
The exchange of technologies and technological knowledge - through joint-ventures, partnerships, licensing, cross-licensing, R&D contracts - and the upsurge of markets for technology are main features of the "knowledge-based" economy.
Fabrizio Cesaroni
core