Method for producing organopolysiloxanes

US9988496B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Frank Sandmeyer · Altötting, DE
• Georg Loessel · Emmerting, DE
• Marko Prasse · Radewitz, DE

Key dates

• Filing date: Jul 21, 2016
• Grant date: Jun 5, 2018
• Expiry date: Jul 21, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Highly condensed silicon resins are obtained by a three step continuous procedure without the use of organic solvent, by preliminarily forming a partial alkoxylate by reacting a chlorosilane with alcohol containing no or a minimal amount of water, feeding the partial alkoxylate to a reaction column to form a silicone resin of low degree of condensation, and further condensing the silicone resin intermediate thus formed to produce a silicone resin product.