Polymer flow index modifier

US10870719B2 · kind B2 · utility

Assignee

• Univation Technologies, LLC · US

Inventors

• Charles D. Lester · Charleston, US
• Mark G. Goode · Hurricane, US
• Timothy R. Lynn · Hackettstown, US
• Kevin J. Cann · Montgomery, US
• John H. Moorhouse · Kendall Park, US
• William A. Matthews · Hilton Head Island, US
• Kefu Sun · Freeport, US
• Francois Alexandre · Saint-Léonard, CA

Key dates

• Filing date: Apr 17, 2017
• Grant date: Dec 22, 2020
• Expiry date: Jul 26, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2500/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.