Polymerization process for producing copolymers

US7157534B2 · kind B2 · utility

Assignee

• Borealis Technology Oy · FI

Inventors

• Petri Lehmus · Porvoo, FI
• Kimmo Hakala · Helsinki, FI
• Paivi Pitkanen · Halkia, FI
• Manfred Arnold · Meckenbeuren, DE
• Andreas Meinecke · Linz, AT
• Udo M. Stehling · Vantaa, FI

Key dates

• Filing date: May 3, 2002
• Grant date: Jan 2, 2007
• Expiry date: May 3, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/943
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention provides a process for the preparation of a propylene polymer in which propylene and a comonomer copolymerizable therewith and of greater molecular weight than propylene are polymerized in a single site catalyst catalized polymerization reaction, characterised in that said polymerization reaction is effected at least in part at a temperature of at least 70° C.