Process for the preparation of high-purity organosilicon disulphanes

US5892085A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Jorg Munzenberg · Hanau, DE
• Werner Will · Gelnhausen, DE
• Gerd Zezulka · Hanau, DE

Key dates

• Filing date: Aug 10, 1998
• Grant date: Apr 6, 1999
• Expiry date: Aug 10, 2018

Classification

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

Abstract

The preparation of high-purity organosilicon disulphanes in which, in a two-stage process, elemental sulphur and an anhydrous alkali sulphide in a deficient amount is first reacted with a halogen alkylalkoxysilane, and the sulphur deficit is then made up by the addition of further alkali sulphide.