Germanium-bridged bis-biphenyl-phenoxy catalysts for olefin polymerization

US11208503B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Hien Q. Do · Lake Jackson, US
• Philip P. Fontaine · Alvin, US
• Andrew J. Young · Houston, US
• Susan G. Brown · Freeport, US
• Johnathan E. DeLorbe · Manvel, US
• Tulaza Vaidya · Royersford, US
• Chunming Zhang · Zionsville, US
• Jerzy Klosin · Midland, US
• Ruth Figueroa · Midland, US

Key dates

• Filing date: Mar 21, 2018
• Grant date: Dec 28, 2021
• Expiry date: Jul 10, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Embodiments are directed to a catalyst system comprising metal ligand complexes and processes for polyolefin polymerization using the metal ligand complex having the following structure: Formula I.