Double loop technology

US9221921B2 · kind B2 · utility

Assignee

• TOTAL RESEARCH & TECHNOLOGY FELUY · BE

Inventors

• Louis Fouarge · Dilbeek, BE
• Eric Damme · Arquennes, BE
• Olivier Miserque · Mont-Saint-Guibert, BE
• Daniel Siraux · Naast, BE
• Philippe Bodart · Amay, BE
• Andre Lewalle · Brussels, BE
• Marc Van der Auwera · Tervuren, BE
• Frans Van den Brande · Mortsel, BE
• Giacomo Conti · Maurage, BE
• Hugo Vandaele · Sint-Andries, BE
• Mark Verleysen · Ekeren, BE
• Carl Van Camp · Beveren, BE
• Etienne Laurent · Seneffe, BE
• Philippe Marechal · Nivelles, BE
• Marc Moers · Ekeren, BE
• Leopold D'Hooghe · Kapellen, BE
• Marjan Sillis · Edegem, BE
• Kai Hortman · Dilbeek, BE
• Pascal Folie · Courcelles, BE
• Renaud Oreins · Wavre, BE

Key dates

• Filing date: Dec 17, 2014
• Grant date: Dec 29, 2015
• Expiry date: Dec 17, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86035
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an apparatus and process for polymerizing olefins. One embodiment comprises polymerizing at least one monomer in a first loop reactor in the presence of a catalyst to produce a first polyolefin fraction. A portion of the first polyolefin fraction is transferred to a second loop reactor, connected in series with the first loop reactor. The process further comprises polymerizing in the second loop reactor at least one monomer in the presence of a catalyst to produce a second polyolefin fraction in addition to the first polyolefin fraction. The combination of the first and second polyolefin fractions can produce a polymer resin fluff having bimodal molecular weight distribution.