Preparation of alkoxysilanes containing a low level of chlorine compounds

US4827008A · kind A · utility

Assignee

• BASF SE

Inventors

• Charalampos Gousetis · Ludwigshafen, DE
• Knut Oppenlaender · Ludwigshafen, DE
• Gert Liebold · Edingen-Neckarhausen, DE
• Guenter Frey · Schifferstadt, DE

Key dates

• Filing date: Mar 8, 1988
• Grant date: May 2, 1989
• Expiry date: Mar 8, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/188
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Alkoxysilanes containing low levels of chlorine compounds are prepared by stepwise etherification of chlorosilanes with alcohols in liquid phase and removal of the resulting hydrogen chloride by reacting the alkoxysilane obtained, which still contains a small amount of chlorine compound, with a metal alkoxide in an amount which corresponds to a small stoichiometric excess based on the proportion of chlorine compound, and freeing the reaction product from the resulting salt.