Process for preparing vinyl chlorosilanes

US6291698A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Stefan Bade · Rheinfelden (Baden), DE
• Bernt Kesper · Dorsten, DE
• Robert Koell · Rheinfelden (Baden), DE
• Hartwig Rauleder · Rheinfelden (Baden), DE
• Uwe Schoen · Rheinfelden (Baden), DE

Key dates

• Filing date: Apr 24, 2000
• Grant date: Sep 18, 2001
• Expiry date: Apr 24, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/122
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing vinyl chlorosilanes, that includes thermally and non-catalytically reacting chlorosilane with vinyl chloride at a temperature of 550 to 700.degree. C. by flowing the chlorosilane and vinyl chloride through a ring-gap space in a ring-gap reactor to produce a reaction gas; the ring-gap space having a cross-sectional area and a volume; and, after the flowing, further reacting, adiabatically, the reaction gas in a second zone to produce a hot reaction gas that contains vinylchiorosilane; wherein the second zone has a cross-sectional area that is greater than the cross-sectional area of the ring-gap space; and wherein the second zone has a volume that is in a ratio to the volume of the ring-gap space of 0.15:1 to 1.5:1. The invention also provides an apparatus for carrying out the above process.