Addition Polymerization of 5-Ethylidene-2-Norbornene in the Presence of Pd N-Heterocyclic Carbene Complexes |
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| Authors: | G O Karpov E V Bermesheva A V Zudina A F Asachenko L I Minaeva M A Topchiy P S Gribanov M S Nechaev M V Bermeshev |
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| Institution: | 1.Topchiev Institute of Petrochemical Synthesis,Russian Academy of Sciences,Moscow,Russia;2.Sechenov First Moscow State Medical University (1st MSMU),Ministry of Health of the Russian Federation,Moscow,Russia;3.OOO INSILIKO,Moscow,Russia;4.Moscow State University,Moscow,Russia;5.Mendeleev University of Chemical Technology of Russia,Moscow,Russia |
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| Abstract: | New high-performance catalytic systems based on Pd N-heterocyclic carbene complexes for the selective addition polymerization of 5-ethylidene-2-norbornene (ENB) were proposed. With these catalysts, polymerization can be conducted at unprecedentedly high monomer/catalyst ratio (up to 5 × 105/1) and gives high-molecular-weight soluble polymers with good film-forming properties. Varying the polymerization conditions (reaction temperature, monomer and catalyst concentrations, monomer/Pd ratio) makes it possible to prepare soluble ENB-based addition polymers with specified molecular weights in reasonable yields. |
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