Method for the production of polyisobutene

US7485764B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Hans Peter Rath · Havelsee, DE
• Stephan Hueffer · Ludwigshafen, DE
• Gabriele Lang · Mannheim, DE
• Arno Lange · Bad Dürkheim, DE
• Eckard Schauss · Heuchelheim, DE

Key dates

• Filing date: Sep 18, 2003
• Grant date: Feb 3, 2009
• Expiry date: Feb 14, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of polyisobutene containing at least 75 mol % of terminal vinylidene groups, in which isobutene or an isobutene-containing hydrocarbon mixture is polymerized in the liquid phase in the presence of a boron trifluoride complex catalyst having the compositiona(BF3):b(Co1):c(Co2)where Co1 is at least one tertiary alcohol, Co2 is at least one compound selected from water, primary alcohols, secondary alcohols, dialkyl ethers, alkanecarboxylic acids and phenols, the ratio c:b is from 0.9 to 1.8 and the ratio (b+c):a is from 0.9 to 3.0, is described.