Process for producing alkylalkoxysilanes

US10894801B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Philipp Albert · Bad Kötzting, DE
• Eckhard Just · Rheinfelden (Baden), DE

Key dates

• Filing date: Jul 1, 2019
• Grant date: Jan 19, 2021
• Expiry date: Jul 1, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/828
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process produces a C3- to C20-alkyltrialkoxysilane by hydrosilylation, wherein alkoxy represents methoxy, ethoxy or propoxy. Initially, a mixture is charged of at least one hydroalkoxysilane from the group of hydrotrialkoxysilane, hydroalkyldialkoxysilane, and hydrodialkylalkoxysilane, and a Pt catalyst. The mixture is then heated to a temperature of 30° C. to 60° C. Subsequently, with mixing, an omega-unsaturated or mono-unsaturated C3- to C20-hydrocarbon, at least one carboxylic acid and at least one alcohol as cocatalysts are added to the mixture. The mixture is then reacted and subsequently worked up to obtain the product.