Method for preparing poly(hydroxymethyl)-functional siloxanes and silica gels

US9096621B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Florian Hoffmann · Ladenburg, DE
• Sascha Erhardt · Rheinfelden (Baden), DE
• Bernhard Rieger · Langenau, DE
• Juergen Stohrer · Pullach, DE

Key dates

• Filing date: Jul 18, 2012
• Grant date: Aug 4, 2015
• Expiry date: Jul 18, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hydroxymethyl-functional siloxanes and silica gels are prepared by reacting a siloxacycle having at least one unit of the formula [SiR2(OR3)—CH2—O]n with water, optionally in the presence of a hydrolyzable silane.