Polymerization of olefinic compounds

US6710007B2 · kind B2 · utility

Assignees

• E.I. DU PONT DE NEMOURS AND COMPANY · US
• The University of North Carolina at Chapel Hill · US

Inventors

• Maurice S. Brookhart · Chapel Hill, US
• Keith Kunitsky · New Garden Township, US
• Weijun Liu · Cedar Park, US
• Jon M. Malinoski · Evansville, US
• Lin Wang · Hockessin, US
• Ying Wang · Wilmington, US
• Lynda Kaye Johnson · Wilmington, US
• Kristina A. Kreutzer · Wilmington, US
• Steven Dale Ittel · Wilmington, US

Key dates

• Filing date: Jan 25, 2002
• Grant date: Mar 23, 2004
• Expiry date: Jan 25, 2022

Classification

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

Abstract

Certain complexes containing ligands having a phosphino group, amino group or an imino group, and a second functional group such as amide, ester or ketone, when complexed to transition metals, catalyze the (co)polymerization of olefinic compounds such as ethylene, &agr;-olefins and/or acrylates. A newly recognized class of ligands for making copolymer containing polar monomers using late transition metal complexes is described.