Polymerization process for producing ethylene based polymers

US10647797B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

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

Key dates

• Filing date: Sep 28, 2016
• Grant date: May 12, 2020
• Expiry date: Nov 12, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/65912
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The disclosure provides a procatalyst for the polymerization of ethylene and optionally one or more alpha-olefins having the structure shown in formula (I) below: wherein at least two of Y1-Y3 and at least two of Y4-Y6 are fluorine atoms and when only two of Y1-Y3 and only two of Y4-Y6 are fluorine atoms, the non-fluorine Y1-Y6 are selected from the group consisting of H atom, alkyl groups, aryl groups, heteroaryl groups, and alkoxy groups. Also provided is a polymerization process using the procatalyst.