Olefin polymerization catalysts based on convex, polcyclic ligands

   
   

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and an anionic, polycyclic, convex ligand. Molecular modeling results indicate that the complexes, when combined with an activator, should actively polymerize olefins. The convex ligand uniquely stabilizes the active site while simultaneously minimizing steric interference. Calculations predict that complexes based on ligands with a high curvature index will have favorable reactivities with olefin monomers compared with similar complexes that incorporate Cp-like ligands.

Um sistema do catalizador útil para polimerizar olefins é divulgado. O sistema do catalizador inclui um complexo organometallic que incorpore um metal da transição do grupo 3 a 10 e um ligand anionic, polycyclic, convexo. Os resultados modelando molecular indicam que os complexos, quando combinados com um activador, devem ativamente polimerizar olefins. O ligand convexo estabiliza excepcionalmente o local ativo ao simultaneamente minimizar a interferência steric. Os cálculos predizem que os complexos baseados em ligands com um índice elevado da curvatura terão reactivities favoráveis com os monomers do olefin comparados com os complexos similares que incorporam PC-COMO ligands.

 
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