Process for preparing a polyethylene resin

US9340631B2 · kind B2 · utility

Assignee

• TOTAL RESEARCH & TECHNOLOGY FELUY · BE

Inventors

• Christopher Willocq · Bousval, BE
• Daniel Siraux · Naast, BE
• Aurélien Vantomme · Mignault, BE
• Olivier Miserque · Court-Saint-Etienne, BE

Key dates

• Filing date: Jul 24, 2013
• Grant date: May 17, 2016
• Expiry date: Jul 24, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/0815
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing a polyethylene resin having a multimodal molecular weight distribution in at least two loop slurry reactors connected in series can include polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene resin. The supported metallocene catalyst can have a particle size distribution of a span value lower than 2.5 and a D50 value within the range of from 5 μm to 20 μm.