Results 1 to 10 of about 7,913 (200)

Dataset of energetically accessible structures of MgCl2/TiCl4 clusters for Ziegler-Natta catalysts [PDF]

open access: yesData in Brief, 2021
This data article provides a dataset of the energetically accessible structures including the most stable structures of xMgCl2/yTiCl4 nanoplates (x = 6–19, y = 0–4).
Gentoku Takasao   +5 more
doaj   +2 more sources

High Melting Point of Linear, Spiral Polyethylene Nanofibers and Polyethylene Microspheres Obtained Through Confined Polymerization by a PPM‐Supported Ziegler‐Natta Catalyst [PDF]

open access: yesChemistryOpen, 2020
In this work, different types of polyethylene (linear, spiral nanofibers and microspheres) were obtained via confined polymerization by a PPM‐supported Ziegler‐Natta catalyst.
Dr. Yu Xiao   +3 more
doaj   +2 more sources

Preparation of High-Performance Polyethylene Nanocomposites with Oleic Acid–Siloxene-Supported Ziegler–Natta Catalysts [PDF]

open access: yesMolecules
The addition of two-dimensional inorganic nanomaterials can effectively enhance the properties of polyethylene (PE). In the present study, a series of high-performance PE/oleic acid (OA)–siloxene nanocomposites were prepared by in situ polymerization ...
Huan Yue   +6 more
doaj   +2 more sources

Effects of various poisoning compounds on the activity and stereospecificity of heterogeneous Ziegler–Natta catalyst [PDF]

open access: yesScience and Technology of Advanced Materials, 2008
A TiCl4/ethylbenzoate/MgCl2 Ziegler–Natta catalyst was pretreated with chemically different poisoning compounds to investigate their effects on the catalyst activity and stereospecificity for propylene polymerization.
Kitti Tangjituabun et al
doaj   +2 more sources

Design of stereoselective Ziegler-Natta propene polymerization catalysts. [PDF]

open access: yesProc Natl Acad Sci U S A, 2006
After five decades of largely serendipitous (albeit formidable) progress, catalyst design in Ziegler–Natta olefin polymerization, i.e., the rational implementation of new active species to target predetermined polyolefin architectures, has ultimately become a realistic ambition, thanks to a much deeper fundamental understanding and major ...
Busico V   +5 more
europepmc   +5 more sources

The Use of Electron Donors to Increase Stereospecificity in Ziegler-Natta Propylene Polymerization [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2016
Different chemical components in traditional Ziegler–Natta catalytic system include: (1) titanium and vanadium containing compounds, mostly TiCl4, as an active centre, (2) trialkylaluminium-based Lewis acid compounds, especially triethylaluminium, as ...
Farshid Nouri-Ahangarani   +2 more
doaj   +1 more source

Imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalysts for ethylene polymerization and ethylene/1-hexene copolymerization [PDF]

open access: yesPolyolefins Journal, 2016
A novel imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalyst for ethylene and ethylene/1-hexene polymerization is investigated. The catalyst is prepared by modification of (SiO2/MgO/MgCl2)TiClx Ziegler-Natta catalysts via supporting vanadium ...
Ting Fu   +5 more
doaj   +1 more source

Active site nature of magnesium dichloride-supported titanocene catalysts in olefin polymerization [PDF]

open access: yesPolyolefins Journal, 2015
Heterogeneous Ziegler-Natta and homogeneous metallocene catalysts exhibit greatly different active sitenature in olefin polymerization. In our previous study, it was reported that MgCl2-supported titanocenecatalysts can generate both Ziegler-Natta-type ...
Toshiaki Taniike   +2 more
doaj   +1 more source

Análise de copolímeros de etileno alfa-olefinas por meio de técnicas de fracionamento [PDF]

open access: yesPolímeros, 2000
Este trabalho apresenta a avaliação da heterogeneidade de resinas comerciais de copolímeros de etileno-1-buteno, produzidas por diferentes processos com catalisadores Ziegler-Natta e de resinas de copolímeros de etileno-1-hexeno sintetizadas em ...
Fernanda F. N. Escher   +3 more
doaj   +1 more source

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