Olefin polymerization activators

US11447586B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Richard Keaton · Pearland, US
• Rafael Huacuja · Rosharon, US
• David R. Wilson · Midland, US
• Jerzy Klosin · Midland, US
• David M. Pearson · Lake Jackson, US
• Todd D. Senecal · Midland, US
• Sukrit Mukhopadhyay · Midland, US
• William H. H. Woodward · Midland, US

Key dates

• Filing date: Mar 26, 2019
• Grant date: Sep 20, 2022
• Expiry date: Mar 26, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/659
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Embodiments of this disclosure include processes of polymerizing olefins, the process comprising contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system, the catalyst system comprising a Group IV metal-ligand complex and an ionic metallic activator complex, the ionic metallic activator complex comprising an anion and a countercation, the anion having a structure according to formula (I):formula (I)