Method for producing organosilanes

US8138365B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Karsten Korth · Wyhlen, DE
• Philipp Albert · Bad Kötzting, DE
• Susann Witzsche · Rheinfelden (Baden), DE
• Ingo Kiefer · Schopfheim, DE
• Jörg Kiefer · Schopfheim, DE
• Stefan Lotter · Pulheim, DE
• Jaroslaw Monkiewicz · Rheinfelden (Baden), DE
• Jörg Schmidt · Schneeberg, DE

Key dates

• Filing date: Jun 11, 2007
• Grant date: Mar 20, 2012
• Expiry date: Jun 11, 2028

Classification

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

Abstract

The invention relates to a method for producing organosilanes of general formula I,[R(R)(R′O)Si—R″—]2Sm  Iby reaction of (halo-organo)alkoxysilanes of formula II,[R(R)(R′O)Si—R″-Hal  IIwith a sulfuring reagent, selected from alkaline hydrogensulfide, alkaline sulfide Me2S, alkaline polysulfide Me2Sg and any combination thereof and optionally additionally with sulfur and/or with H2S in a solvent, the alkaline hydroxy content of all materials used being <0.44 wt. %.