Results 51 to 60 of about 5,506 (175)
Kinetic resolution of racemic {alpha}-olefins with ansa-zirconocene polymerization catalysts: Enantiomorphic site vs. chain end control [PDF]
, 2006 Copolymerization of racemic {alpha}-olefins with ethylene and propylene was carried out in the presence of enantiopure C1-symmetric ansa metallocene, {1,2-(SiMe2)2({eta}5-C5H-3,5-(CHMe2)2)({eta}5-C5H3)}ZrCl2 to probe the effect of the polymer chain end ...
Bercaw, John E., Byers, Jeffery A.
core +1 more source
An Overview of the Potential of UV Modification of Polypropylene [PDF]
, 2016 This is the peer reviewed version of the following article: Amintowlieh, Y., Tzoganakis, C., & Penlidis, A. (2016). An Overview of the Potential of UV Modification of Polypropylene.
Amintowlieh, Yasaman +2 more
core +1 more source
State‐of‐the‐Art and Synthetic Challenges for Hydrosilane Production
Chemistry – A European Journal, EarlyView.The synthesis of hydrosilanes is currently energy intensive and their recycling is not considered. However, these compounds are important in many industrial fields but also for the valorization of oxygenated waste, towards a circular economy. This review compares the available synthetic routes and highlights the remaining challenges for the production ...
Gabriel Durin +3 more
wiley +1 more source
Synthesis of Early Transition Metal Bisphenolate Complexes and Their Use as Olefin Polymerization Catalysts [PDF]
, 2009 Bisphenolate ligands with pyridine- and benzene-diyl linkers have been synthesized and metalated with group 4 and 5 transition metals. The solid-state structures of some of the group 4 complexes have been solved.
Bercaw, John E., Golisz, Suzanne R.
core +1 more source
UHMWPE/HDPE in-reactor blends, prepared by in situ polymerization: synthetic aspects and characterization [PDF]
, 2017 This work covers the synthesis and characterization of in-reactor Ultra-High Molecular Weight Polyethylene/ High Density Polyethylene, UHMWPE/HDPE, blends by in situ polymerization in a single reactor, through dual catalyst immobilization. These blends
Cerrada, M. L. +8 more
core +4 more sources
European Journal of Organic Chemistry, EarlyView.Bridging the gap. Beyond deck functionalization, the ethylene bridges of [2.2]paracyclophanes offer a largely unexploited reactivity landscape. This review showcases strategies to functionalize these bridges and leverage them to build novel cyclophane architectures.
Rongyu Sun +3 more
wiley +1 more source
Hydrogen effects in the polymerization of propylene with C2 symmetric metallocene catalysts
e-Polymers, 2013 Propylene was polymerized with two C2 symmetric metallocene catalysts, ethylene bis(indenyl)zirconium dichloride and dimethylsilyl bis(2-methylbenz( e) indenyl) zirconium dichloride, in the presence of increasing amounts of hydrogen.
Amer Ismael, Reenen Albert van
doaj +1 more source
Kinetic Analysis and Optimization of Long Chain Branched Propylene Polymerization System [PDF]
, 2014 A kinetic model has been proposed for a binary catalyst system with the available experimental data from the open literature, in which one catalyst produces polypropylene macromonomer, while the other catalyst attacks the macromonomers as side chains ...
Majumdar, S +2 more
core +2 more sources
Modeling and Optimization of propylene polymerization with branching [PDF]
, 2014 A kinetic model has been proposed to fit the experimental data (2003) available from the open literature for branched propylene polymerization system. The present system considered is a binary catalyst system, in which the first catalyst produces the ...
Majumdar, S +2 more
core +2 more sources
ChemCatChem, Volume 18, Issue 9, 14 May 2026.Group 6 metal complexes of Cr, Mo, and W supported by N‐heterocyclic carbenes are emerging as versatile platforms for homogeneous catalysis. This review highlights advances in reduction, hydrogen transfer, oxidation, and small molecule activation, revealing how ligand design controls reactivity and opens sustainable alternatives to noble‐metal ...
Beatriz Garcia +2 more
wiley +1 more source