Univation Technologies, LLC

Exxonmobil Chemical Patents Inc.

Kevin P Ramirez

Catherine Anne Faler

C Jeff Harlan

Crisita Carmen H Atienza

David A Cano

Disclosed are novel bis(aminophenylphenol) ligands and transition metal compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds.

Bis(aminophenylphenol) ligands and transition metal catalysts prepared therefrom

New methods for preparing bridged bi-aromatic ligands are disclosed. The methods employ aryl coupling of unprotected phenols. The ligands may be used to prepare transition metal compounds useful as catalysts in olefin polymerization.

Methods for preparing bridged bi-aromatic ligands

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds.

Bridged bi-aromatic ligands and transition metal compounds prepared therefrom

New methods of preparing bridged bi-aromatic ligands are disclosed. The methods employ direct di-ortho-lithiation of aromatic rings of bridged protected bi-aromatic diphenols. The ligands may be used to prepare transition metal compounds useful as catalysts in olefin polymerization.

Phenolate ligands and transition metal complexes are disclosed for use in alkene polymerization, with optional chain transfer agent, to produce polyolefins.

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Houston, TX, United States of America

Kevin P Ramirez