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A Bis(phenoxy-imine)Zr Complex for Ultrahigh-Molecular-Weight Amorphous Ethylene/Propylene Copolymer
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2002
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Materials SciencePolymer MaterialEngineeringMacromolecular EngineeringZr ComplexMacromolecular ChemistryPolymer ScienceNew BisChemistrySynthetic CopolymersOrganometallic PolymerFunctional MaterialsPolymer ChemistryPolymer SynthesisPolymers
A new bis(phenoxy-imine)Zr complex has been developed. This complex in conjunction with iBu3Al/Ph3CB(C6F5)4 at 70°C produces ultrahigh-molecular-weight amorphous ethylene/propylene copolymer with a weight-average molecular weight of 10 200 000 g/mol versus polystyrene standards, which represents the highest molecular weight known for linear, synthetic copolymers to date.