Catalyst systems and their use for metathesis reactions

US8536277B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Julia Marie Mueller · Blaustein, DE
• Oskar Nuyken · Munich, DE
• Werner Obrecht · Moers, DE

Key dates

• Filing date: Jun 23, 2009
• Grant date: Sep 17, 2013
• Expiry date: Mar 25, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/821
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A novel process for reducing the molecular weight of nitrile rubber in the presence of specific catalyst systems containing the metathesis catalyst and also a specific addition of fluorine-containing boron compounds is provided.