Results 81 to 90 of about 2,075 (218)

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, R. Mehtarani, M. Sadati, F. Hormozi   +3 more
doaj   +1 more source

Styrene Polymerization with Group III Metallocenes: A Generative and Interpretable Catalyst Design Strategy Combining Density Functional Theory and Machine Learning

ChemistryEurope, Volume 4, Issue 1, January 2026.
Machine‐learning methods are used to predict styrene binding energies and insertion barriers in a series of group III cationic catalysts. A generative algorithm based on these predicted data is provided to propose new catalysts. The rational design of group III metallocene catalysts for styrene polymerization remains a complex challenge due to ...
Stella Christodoulou, Etienne Dos Santos, Romuald Poteau, Laurent Maron   +3 more
wiley   +1 more source

End-to-End High-Throughput Approach for Data-Driven Internal Donor Development in Heterogeneous Ziegler-Natta Propylene Polymerization

Internal donors (IDs) play a decisive role in shaping the structure and performance of Ziegler-Natta catalyst formulations for the isotactic polypropylene production.
Patchanee, Chammingkwan, Vincenzo, Busico, Toshiaki, Taniike, Felicia Daniela, Cannavacciuolo, Mostafa, Khoshsefat, Diego , De Canditiis, Giuseppe, Antinucci, Roberta, Cipullo   +7 more
core   +1 more source

Dimerization of 1-butene via zirconium-based Ziegler-Natta catalyst

, 2000
A zirconium-based Ziegler-Natta catalytic system has been tested in the dimerization of 1-butene. It was found that the concentration of Et2AlCl, Ph3P and PhONa as well as the reaction temperature had great influences on the activity and selectivity of ...
Han, XW, Zhang, WP, He, R, Bao, XH, Li, C   +4 more
core  

Performance of Post Phthalate Ziegler Natta Catalysts with Activity Limiting Agents for Propylene Gas Phase Polymerization

, 2023
The performance of isopropyl myristate, methyl trimethylacetate, and dibutyl sebacate (IPM, MTMA, and DBS respectively) as activity limiting agents (ALA) were evaluated using a post phthalate Ziegler Natta catalyst system...
Albeladi, Abdulrahman, Moman Akhlaq, Timothy F. L. McKenna, Mckenna, Timothy, Abdulrahman Albeladi, Akhlaq, Moman   +5 more
core   +1 more source

Generation of Homogeneous (sp³-C₁)-Bridged Cp/Amido and Cp/Phosphido Group 4 Metal Ziegler−Natta Catalyst Systems

, 2016
Generation of Homogeneous (sp3-C1)-Bridged Cp/Amido and Cp/Phosphido Group 4 Metal Ziegler−Natta Catalyst ...
Klaus Kunz (2720305), Gerhard Erker (1443580), Steve Döring (2720311), Roland Fröhlich (2430502), Gerald Kehr (1443583)   +4 more
core   +1 more source

Experimental-Density Functional Theory (DFT) Study of the Inhibitory Effect of Furan Residues in the Ziegler-Natta Catalyst during Polypropylene Synthesis. [PDF]

Int J Mol Sci, 2023
Hernández-Fernández J, Puello-Polo E, Marquez E.   +2 more
europepmc   +1 more source

Impact of Traces of Hydrogen Sulfide on the Efficiency of Ziegler-Natta Catalyst on the Final Properties of Polypropylene. [PDF]

Polymers (Basel), 2022
Hernández-Fernández J, Cano H, Aldas M.   +2 more
europepmc   +1 more source

Theoretical-Experimental Study of the Action of Trace Amounts of Formaldehyde, Propionaldehyde, and Butyraldehyde as Inhibitors of the Ziegler-Natta Catalyst and the Synthesis of an Ethylene-Propylene Copolymer. [PDF]

Polymers (Basel), 2023
Hernández-Fernández J, Ortega-Toro R, Castro-Suarez JR.   +2 more
europepmc   +1 more source

Aktivierung eines Industriellen Ziegler-Natta Katalysators für die Propylenpolymerisation und Entwicklung einer Neuartigen Methode zur Kontrollierten Synthese Sphärischer Ziegler-Natta Katalysatorträger

, 2010
In the first part of this thesis, a pre-commercial industrial catalyst was treated with different hydrocarbon solvents and mixtures thereof with titanium tetrachloride to enhance its activity in the polymerization of propylene. In the second part of this
Hanisch, Christian
core