Olefin polymerization process in the presence of an anti-fouling agent

US7470757B2 · kind B2 · utility

Assignee

• Total Petrochemicals Research Feluy · BE

Inventors

• Olivier Miserque · Court-Saint-Etienne, BE
• Daniel Siraux · Naast, BE
• Philippe Bodart · Clermont-sous-Huy, BE

Key dates

• Filing date: Feb 8, 2005
• Grant date: Dec 30, 2008
• Expiry date: Feb 8, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An olefin polymerisation process carried out in the presence of an anti-fouling agent and a chromium-type catalyst or Ziegler Natta catalyst; characterised in that the anti-fouling agent comprises an anti-fouling polymer having an average molecular weight (Mw) of greater than 1000 daltons and containing: (1) one or more blocks —(CH2—CH2—O)k— where each k is in the range from 1 to 50; and (2) one or more blocks —(CH2—CH(R)—(O)n− where R comprises an alkyl group having from 1 to 6 carbon atoms and each n is in the range from 1 to 50, and terminated by a R′ and a R″ end groups, wherein R′ is OH or an alkoxy having from 1 to 6 carbon atoms and R″ is H or an alkyl having from 1 to 6 carbon atoms.