Process for production of halobutyl ionomers

US9273154B2 · kind B2 · utility

Assignee

• LANXESS INTERNATIONAL SA · CH

Inventors

• Carsten Kreuder · Sarnia, CA
• Adam Gronowski · Sarnia, CA
• John Lovegrove · Sarnia, CA
• Hanns-Ingolf Paul · Leverkusen, DE
• Rolf Feller · Mettmann, DE
• Dana Adkinson · London, CA
• Phil Magill · London, CA

Key dates

• Filing date: Jan 17, 2011
• Grant date: Mar 1, 2016
• Expiry date: Apr 9, 2032

Classification

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

Abstract

The invention relates to an energy efficient, environmentally favorable process for the preparation of butyl ionomers that uses a common medium for both solution polymerization and subsequent bromination of butyl rubber. More particularly, the invention relates to a process that employs a common aliphatic medium for both solution polymerization and bromination of butyl rubber in the presence of a brominating agent and optionally for subsequent reaction with at least one nitrogen and/or phosphorus based nucleophile.