Bridged bi-aromatic catalysts, complexes, and methods of using the same

US7241714B2 · kind B2 · utility

Assignee

• Symyx Technologies, Inc. · US

Inventors

• Thomas R. Boussie · Menlo Park, US
• Oliver Brummer · Berlin, DE
• Gary M. Diamond · Menlo Park, US
• Anne M. LaPointe · Sunnyvale, US
• Margarete K. Leclerc · Santa Clara, US
• Cynthia Micklatcher · Santa Clara, US
• Pu Sun · Mountain View, US
• Xiaohong Bei · Santa Clara, US

Key dates

• Filing date: May 16, 2006
• Grant date: Jul 10, 2007
• Expiry date: May 16, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands, and methods of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalysts have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.