Process for the selective hydrogenation of unsaturated polymers containing nitrile groups

US4795788A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Thomas Himmler · Odenthal, DE
• Paul Fiedler · Cologne, DE
• Rudolf Braden
• Hartmuth Buding · Titz, DE

Key dates

• Filing date: Nov 14, 1986
• Grant date: Jan 3, 1989
• Expiry date: Nov 14, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Unsaturated polymers containing nitrile groups can be hydrogenated with the preservation of the nitrile group in a homogeneous phase with a catalyst of the formula: EQU RuX[(L.sub.1) (L.sub.2).sub.n ] in which PA0 X represents hydrogen, halogen or SnCl.sub.3, PA0 L.sub.1 represents optionally substituted indenyl, PA0 L.sub.2 represents a phosphane, bisphosphane or arsane and n signifies 1 or 2, if a low-molecular ketone is used as a solvent.