Die Angewandte Makromolekulare Chemie · 1993 · 34 citations · 3 references
EngineeringChemistryPolymersChemical EngineeringPolymer TechnologyMacromolecular EngineeringNeodymium CatalystPolymerization SystemPolymer ProcessingPolymer ChemistryMaterials ScienceCatalysisBatch PolymerizationPolymer AnalysisPolymer ReactionPolymer SciencePolymer CharacterizationPolymerization KineticsPolymer ModelingNeodymium VersatatePolymer Synthesis
Abstract The batch polymerization of butadiene in hexane with an in‐situ‐activated Ziegler‐Catalyst containing neodymium versatate, ethylaluminium sesquichloride and triisobutylaluminium was studied at 45°C. The rate of polymerization was determined by online density measurements. A mathematical model has been developed which is able to describe the kinetics of polymerization at different catalyst ratios. At molar ratios of aluminium/neodymium above 40 a bimodal molar mass distribution can be observed by gel permeation chromatography which leads to the assumption of more than one active species being present in the polymerization system.
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