Method for producing homopolymers and copolymers of isobutene

US7132488B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stephan Huffer · Birkenfeld, DE
• Hans Peter Rath · Havelsee, DE
• Gabriele Lang · Mannheim, DE

Key dates

• Filing date: Dec 11, 2001
• Grant date: Nov 7, 2006
• Expiry date: Dec 11, 2021

Classification

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

Abstract

In a process for the polymerization of isobutene or mixtures of isobutene with ethylenically unsaturated comonomers under the conditions of living cationic polymerization, the initiator system additionally comprises at least one nonpolymerizable, aprotic organosilicon compound having at least one Si—O bond.