Method for producing unsaturated compounds

US9120736B2 · kind B2 · utility

Assignee

• Cognis IP Management GmbH · DE

Inventors

• Lukas J. Gooβen · Kaiserslautern, DE
• Dominik Ohlmann · Sankt Wendel, DE
• Markus Dierker · Mülheim an der Ruhr, DE

Key dates

• Filing date: Feb 25, 2012
• Grant date: Sep 1, 2015
• Expiry date: Feb 26, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing compositions containing unsaturated compounds, wherein (A) one or more unsaturated monocarboxylic acids having 10 to 24 C-atoms or esters of said monocarboxylic acids and optionally (B) one or more compounds having at least one C═C double bond (wherein the compounds (B) are different from the compounds (A)) are subjected to a tandem isomerization/metathesis reaction sequence in the presence of a palladium catalyst and a ruthenium catalyst, providing that the palladium catalysts used are compounds that contain at least one structural element Pd—P(R1R2R3), wherein the radicals R1 to R3, independently of one another, each comprise 2 to 10 C-atoms, which may be aliphatic, alicyclic, aromatic or heterocyclic respectively, providing that at least one of the radicals R1 to R3 contains a beta-hydrogen, wherein the palladium catalyst is used as such or is produced in situ, providing that the method is carried out in the absence of substances that have a pKa value of 3 or less.