Process for preparing mercaptoorganyl (alkoxysilanes)

US7518009B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Karsten Korth · Wyhlen, DE
• Dorit Wolf · Oberursel, DE
• Steffen Seebald · Großkrotzenburg, DE
• Philipp Albert · Bad Kötzting, DE
• Reimund Pieter · Bensheim, DE
• Alfred Alig · Pfalzgrafenweiler, DE

Key dates

• Filing date: May 2, 2006
• Grant date: Apr 14, 2009
• Expiry date: Dec 28, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1892
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing mercaptoorganyl(alkoxysilanes), by hydrogenating bis(alkoxy-silylorganyl) polysulphides with hydrogen in the presence of at least one alcohol and a doped metal catalyst. The doped metal catalyst comprises at least one substance from the group consisting of iron, iron compound, nickel, nickel compound, palladium, palladium compound, osmium, osmium compound, ruthenium, ruthenium compound, rhodium, rhodium compound, iridium and iridium compound plus at least one doping component.