Water-soluble organosiliconate powder

US8748645B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Daniel Schildbach · Altötting, DE
• Dominik Auer · Dahme/Mark, DE
• Karl-Heinz Felix · Simbach, DE
• Michael Stepp · Braunau am Inn, AT

Key dates

• Filing date: Jul 11, 2011
• Grant date: Jun 10, 2014
• Expiry date: Jul 11, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Organosilanolate powders having a low cation to silicon ratio provide superior hydrophobing ability. The powders may be prepared on an industrial scale by hydrolysis of a silane with a basic salt solution, adding an inert organic solvent, and removing gaseous or alcoholic hydrolysis products by evaporation or distillation, precipitating the organosilanolate as a fine powder.