Biphenylphenol polymerization catalysts

US12428504B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Angela I. Padilla-Acevedo · Lake Jackson, US
• Andrew J. Young · Houston, US
• Roger L. Kuhlman · Lake Jackson, US
• Ruth Figueroa · Midland, US
• Susan G. Brown · Freeport, US
• Matthew E. Belowich · Midland, US
• David R. Neithamer · Midland, US
• Jerzy Klosin · Midland, US
• David M. Pearson · Lake Jackson, US
• Mari S. Rosen · Midland, US
• Bethany M. Neilson · Manvel, US
• Johnathan E. DeLorbe · Manvel, US
• Leslie E. O'Leary · Sugar Land, US

Key dates

• Filing date: Nov 4, 2020
• Grant date: Sep 30, 2025
• Expiry date: Dec 5, 2042

Classification

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

Abstract

Embodiments are directed towards the use of a supported biphenylphenol polymerization catalyst made from a biphenylphenol polymerization precatalyst of Formula I via a gas-phase or slurry-phase polymerization process under gas-phase or slurry-phase polymerization conditions to make a polymer.