Process for preparing high-reactivity isobutene homo- or copolymers

US8349977B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Hannah Maria Koenig · Mannheim, DE
• Klaus Muelbach · Havelsee, DE
• Matthias Kiefer · Ludwigshafen, DE
• Sergei V. Kostjuk · Minsk, BY
• Irina Vasilenko · Minsk, BY
• Alexander Frolov · Machulishi, BY

Key dates

• Filing date: Feb 17, 2011
• Grant date: Jan 8, 2013
• Expiry date: Feb 17, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Preparation of high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % and a polydispersity of preferably 1.05 to less than 3.5, by polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, especially of an aluminum trichloride-donor complex, said complex comprising, as the donor, an organic compound with at least one ether function or a carboxylic ester function.