Bulk Coordination Polymerization of Dicyclopentadiene (DCPD) by Pd Complexes Containing β-Ketoiminate or β-Diketiminate Ligands

R&D Center, Kolon Industries, Inc., Incheon, KoreaReceived August 31, 2012, Accepted September 27, 2012Several palladium complexes containing β-ketoiminate and β-diketiminate ligands successfully producedpoly(DCPD) possibly via vinyl addition. It was found that catalysts with β-diketiminate ligands containingbulkier aryl substituents showed the highest activity in the presence of MAO as a cocatalyst. Purity of DCPDis quite essential for the higher activity and small amount of organic solvent such as CH