Process for producing high molecular weight polyethylene

US9212234B2 · kind B2 · utility

Assignee

• Ticona LLC · US

Inventors

• Dominique Robert · Montegrosso d'Asti, IT
• Julia Hufen · Rheinberg, DE
• Kerstin Lüdtke · Markkleeberg, DE
• Bjorn Rinker · Hünxe, DE
• Jens Ehlers · Horst, DE

Key dates

• Filing date: Jul 1, 2011
• Grant date: Dec 15, 2015
• Expiry date: Jul 1, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/60193
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In a process for producing high molecular weight polyethylene, ethylene is contacted with a slurry of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand under polymerization conditions comprising a temperature of about 20° C. to less than 90° C. and a pressure of about 4 bar to about 40 bar.