Process for preparing polyolefin

US8642710B2 · kind B2 · utility

Assignee

• Total Petrochemicals Research Feluy · BE

Inventors

• Eric Damme · Arquennes, BE
• Louis Fouarge · Dilbeek, BE
• Jerome Bette · Houston, US
• Alvaro Fernandez · Barcelona, ES
• Aurélien Vantomme · Mignault, BE
• Renaud Oreins · Wavre, BE
• Daniel Siraux · Naast, BE

Key dates

• Filing date: Feb 3, 2011
• Grant date: Feb 4, 2014
• Expiry date: Feb 3, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31855
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor.