Search results for "Precatalysts"

showing 2 items of 2 documents

Enhancing Performance of a Bis(arylimino)pyridine‐Iron Precatalyst for Ethylene Polymerization by Substitution with a 2,4‐Bis(4,4′‐dimethoxybenzhydry…

2021

A series of unsymmetrical 2-(2,4-bis(bis(4-methoxyphenyl)methyl)-6-MeC6H2N)-6-(1-(arylimino)ethyl)pyridine-iron halides has been synthesized and characterized. The molecular structure of two representative species was determined by the single-crystal X-ray diffraction. Activated with either MAO or MMAO, the precatalysts displayed high activity, reaching 2.19×107 g PE (mol Fe)−1 h−1 at 60 °C in ethylene polymerization. The microstructural analysis of the polymers obtained indicates highly linear polyethylene containing a vinyl chain end.

Inorganic ChemistryEthylene polymerizationchemistry.chemical_compoundPrecatalystsEthylene polymerizationChemistryGroup (periodic table)Substitution (logic)PyridineVinyl polyethyleneHigh activityIron(II)Medicinal chemistryEuropean Journal of Inorganic Chemistry
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Activity and Thermal Stability of Cobalt(II)-Based Olefin Polymerization Catalysts Adorned with Sterically Hindered Dibenzocycloheptyl Groups.

2019

Five examples of unsymmetrical 2-(2,4-bis(dibenzocycloheptyl)-6-methylphenyl- imino)ethyl)-6-(1-(arylyimino)ethyl)pyridine derivatives (aryl = 2,6-Me2C6H3 in L1

Photochemistry2Pharmaceutical Sciencechemistry.chemical_elementCatalysisArticlethermal stabilityAnalytical ChemistryPolymerizationlcsh:QD241-441chemistry.chemical_compoundDibenzocycloheptyl grouplcsh:Organic chemistryDrug DiscoveryPolymer chemistryPyridine26-bis(imino)pyridylcobalt(II) chloride precatalystsThermal stabilityPhysical and Theoretical ChemistryMolecular StructureOrganic ChemistryCobaltPolyethyleneSquare pyramidal molecular geometryLinear low-density polyethylene6-bis(imino)pyridylcobalt(II) chloride precatalystschemistryPolymerizationhigh molecular-weight saturated/unsaturated polyethyleneChemistry (miscellaneous)PolyethyleneMolecular MedicineMolar mass distributionCobaltMolecules (Basel, Switzerland)
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