Solvent effects in the polymerization of propylene catalyzed by octahedral complexes

Autor:	Victoria Volkis, Anatoli Lisovskii, Elena Smolensky, Moris S. Eisen
Rok vydání:	2005
Předmět:	Polymers and Plastics Bulk polymerization Chemistry Organic Chemistry chemistry.chemical_element Solution polymerization Solvent chemistry.chemical_compound Polymerization Polymer chemistry Pyridine Materials Chemistry Solvent effects Dichloromethane Titanium
Zdroj:	Journal of Polymer Science Part A: Polymer Chemistry. 43:4505-4516
ISSN:	1099-0518 0887-624X
DOI:	10.1002/pola.20915
Popis:	The effect of solvents (toluene, dichloromethane, and hexane) was studied on the polymerization of propylene with the octahedral complexes bis(trimethylsilyl) benzamidinate titanium dichloride(a), bis(acetylacetonate) titanium dichloride(b), and bis(diethylamino) titanium di-2-(diphenylphosphanylamino)pyridine as catalytic precursors and methylalumoxane as the cocatalyst. For comparison, the polymerization was also performed in plain liquid propylene without the addition of any solvent. The obtained polymers were fractionated by refluxing hexane. The activity of the complexes and the molecular weights and tacticities of the whole polymers and their different fractions were the studied parameters.
Databáze:	OpenAIRE
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