Quinolinoxy and pyridinoxy single-site catalysts containing benzyl ligands
 An improved catalyst for polymerizing olefins is disclosed. The catalyst comprises a Group 4 transition metal, at least one quinolinoxy or pyridinoxy ligand, and at least one benzyl ligand. Particularly when used with an activator, the benzyl-containing catalysts have exceptional activities for polymerizing olefins. 
Equistar Chemicals, L.P.
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Jia-Chu
Liu