Metal Catalysts Comprising Nitrogen-containing Aromatic Ligands and Use Thereof
The present invention discloses a method for the preparation of a polymer from vinyl group-containing monomers comprising the step of polymerizing the vinyl group-containing monomers in the presence of a metal catalyst having a moiety M<2+>(Y)4(X)2, wherein M is a transition metal selected from the group of Ru, Mn, Fe, Co, Zr, Rh and Os, each Y independently is a nitrogen-containing aromatic mono-ring ligand, at least one ligand Y being substituted on at least one position with a carbon-containing substituent and, optionally, either two or four ligands Y being covalently bonded to each other in pairs, and X is selected from H2O, CH3CN, (CH3) 2S0, NH3, and a mono-, di- or tri (C1-C4) -alkyl amine. The catalyst advantageously enables the synthesis of polymers with high molecular weights and low polydispersities from monomer compounds containing a vinyl group. The present invention further discloses specific novel ruthenium catalysts.
DOMINGUEZ-GUTIERREZ DAVID [ES]; EISER ERIKA [NL]; ELSERVIER CORNELIS JOHANNES [NL]
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