Process for preparing polymers from 3-methylbut-1-ene

US8138293B2 · kind B2 · utility

Assignee

• Evonik Oxeno GmbH · DE

Inventors

• Michael Grass · Bend, US
• Franz Nierlich · Marl, DE
• Walter Kaminsky · Pinneberg, DE
• Stefanie Derlin · Hamburg, DE
• Klaus-Diether Wiese · Haltern am See, DE
• Dagmara Ortmann · Brig, CH

Key dates

• Filing date: May 11, 2007
• Grant date: Mar 20, 2012
• Expiry date: Aug 21, 2027

Classification

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

Abstract

The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group.