Results 1 to 10 of about 50,243 (307)

Enhanced Spin Capturing Polymerization of Ethylene

, 2012
International audienceEnhanced spin capturing polymerization (ESCP)-a recent and versatile technique in the field of controlled radical polymerization-achieves control over molecular weights and the synthesis of complex copolymer structures for a wide ...
Guillaneuf, Y., Christophe Boisson, D'Agosto, F., Dommanget, Cédric, Dommanget, C., Boisson, F., Barner-Kowollik, C., Vincent Monteil, Franck D’Agosto, d'Agosto, Franck, Junkers, Thomas, Tanja Junkers, Monteil, V., Yohann Guillaneuf, Monteil, Vincent, Boisson, Christophe, Christopher Barner-Kowollik, Boisson, C., Gigmes, D., Gigmes, Didier, Charleux, B., Guillaneuf, Yohann, Charleux, Bernadette, Bernadette Charleux, Didier Gigmes, Boisson, Fernande, Junkers, T., Fernande Boisson, D’Agosto, Franck, Barner-Kowollik, Christopher, Cedric Dommanget   +30 more
core   +2 more sources

Impact of AlCl3 and FeCl2 Addition on Catalytic Behaviors of TiCl4/MgCl2/THF Catalysts for Ethylene Polymerization and Ethylene/1-Hexene Copolymerization

Bulletin of Chemical Reaction Engineering & Catalysis, 2018
The present research focuses on elucidating of the impact of Lewis acids including AlCl3 and FeCl2 addition on catalytic behaviors during ethylene polymerization and ethylene/1-hexene copolymerization over the TiCl4/MgCl2/THF catalyst (Cat. A).
Thanyathorn Niyomthai, Bunjerd Jongsomjit, Piyasan Praserthdam   +2 more
doaj   +1 more source

Dualfunktional polymer brushes and dualfunktional polymer nanoreactors [PDF]

, 2013
The design of new systems featuring multi-functionalities represents a key strategy in meeting complex challenges in various domains including chemistry, medicine, environmental sciences, and technology.
Dobrunz, Dominik
core   +1 more source

Phillips catalysts synthesized over various silica supports: Characterization and their catalytic evaluation in ethylene polymerization [PDF]

Polyolefins Journal, 2016
Ethylene polymerization was carried out using Phillips chromium catalyst based on silica supports such as silica aerogel, SiO2 (Grace 643), and titanium modified SiO2 (G 643), and the results were compared with other catalysts based on SiO2 (Aldrich ...
Ebrahim Ahmadi, Zahra Mohamadnia, Sajjad Rahimi, Mohammad Hasan Armanmehr, Mohammad Hossein Heydari, Mahmood Razmjoo   +5 more
doaj   +1 more source

A New Vanadium (III) Complex of 2,6-Bis(3,5-diphenylpyrazol-1-ylmethyl)pyridine as a Catalyst for Ethylene Polymerization

Molecules, 2013
The tridentate ligand 2,6-bis(3,5-diphenylpyrazol-1-ylmethyl)pyridine, abbreviated as 2,6-[(3,5-ph2pz-CH2)2-py], a new pyridine-pyrazole derivative, was prepared from 2,6-bis(bromomethyl)pyridine and 3,5-diphenylpyrazole.
Hanna S. Abbo, Salam J. J. Titinchi
doaj   +1 more source

Protein nanoreactors and native enzymes for controlled/living radical polymerization [PDF]

, 2013
The present PhD thesis entitled ‚Protein Nanoreactors and Native Enzymes for Controlled/Living Radical Polymerization‘ began with the hypothesis that protein-catalyst conjugates are able to beneficially influence controlled/living radical polymerization,
Renggli, Kasper
core   +1 more source

Ethylene-Free Synthesis of Polyethylene Copolymers and Block Copolymers

, 2021
Herein, we report on a new and innovative post-polymerization modification procedure for the ethylene-free synthesis of polyethylene copolymers and block copolymers.
Edgar Molle (11581781), Andreas J. Butzelaar (11581784), Andreas J. Butzelaar, Stefan Frech (11581778), Patrick Theato (1432210), Stefan Frech, Edgar Molle, Patrick Theato   +7 more
core   +1 more source

Polymerization of Ethylene Using α-Diimine Nickel Catalyst [PDF]

علوم و تکنولوژی پلیمر, 2013
The late transition metal catalysts based on end group of transition metals in the periodic table like Ni, Fe, Co, Pd, Pt were developed rapidly in polyolefin industrial productions.
Hassan Arabi1, Matin Ghafari, Gholamhossein Zohuri, Saman Damavandi, Saeid Ahmadjo   +4 more
doaj   +1 more source

Molecular and Supported Ti(III)–Alkyls: Efficient Ethylene Polymerization Driven by π-Character of Metal-Carbon Bonds and Back Donation from a Singly Occupied Molecular Orbital

, 2020
Manuscript on a study on a homogeneous polymerization catalyst, its conversion to a heterogeneous catalyst by reaction with a support, an improvement of catalytic properties by this step, characterization of the structure of both catalysts, and insight ...
Keith, Searles, Gunnar, Jeschke, Florian, Allouche, Christophe, Copéret, Nino, Wili, Daniel, Klose, Anton, Ashuiev   +6 more
core   +1 more source

Active Sites in Cr(III)-based Ethylene Polymerization Catalysts from Machine Learning-Supported XAS and EPR Spectroscopy

, 2023
The ethylene polymerization Phillips catalyst has been employed for decades and is central to the polymer industry. While Cr(III) alkyl species are proposed to be the propagating sites, there is so far no direct experimental evidence for such proposal ...
Alexander, Guda, David, Trummer, Gunnar, Jeschke, Christophe, Copéret, Sergey, Guda, Anna Giorgia, Nobile, Daniel, Klose, Anton, Ashuiev, Olga V., Safonova   +8 more
core   +1 more source