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RESEARCH PRODUCT
Titanium (IV) chloride complexes with salen ligands supported on magnesium carrier: Synthesis and use in ethylene polymerization
Anna PietruszkaMarzena Białeksubject
inorganic chemicalschemistry.chemical_classificationpolyethyleneZiegler‐Natta polymerizationPolymers and PlasticssupportsComonomerOrganic Chemistrychemistry.chemical_elementPolymerPolyethylenecatalystsCatalysischemistry.chemical_compoundchemistryPolymerizationMetal salen complexesPolymer chemistryMaterials ChemistryMolar mass distributiontitanium (IV) salen complexesTitaniumdescription
The magnesium support with the formula MgCl 2 (THF) 0.32 (Et 2 AlCl) 0.36 was used for immobilization of salen complexes of titanium [Ti(salen)Cl 2 , Ti(salen(O-Me) 2 )Cl 2 ]. The effects of the catalyst composition (i.e. type of titanium complex and type of activator), polymerization temperature, polymerization time, and the effect of comonomer (1-octene) on the activity of the obtained supported catalysts, on the polymer characteristics (molecular weight, molecular weight distribution, melting point), and on the polymer morphology were studied. The findings were compared to those obtained for corresponding unsupported systems. Catalysts immobilization results in considerable changes in catalysts activity and in properties of resultant polymers. The studied supported catalysts are highly active in ethylene polymerization, their activity increases with increasing temperature and lasts at least 2 hours. Their copolymerizing ability towards 1-octene is rather low.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-10-27 | Journal of Polymer Science. Part A : Polymer Chemistry |