Stable water repellent compositions

US3955985A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Erhard Bosch
• Ewald Pirson · Burghausen, DE
• Michael Roth

Key dates

• Filing date: Jul 11, 1974
• Grant date: May 11, 1976
• Expiry date: Jul 11, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A water repellent composition comprising an aqueous solution of alkali metal alkyl and/or phenyl siliconates, an organic aqueous soluble complexing or chelating agent and an aqueous miscible monovalent alcohol and/or ketone. This composition may be applied to building materials, such as masonry surfaces to render them water repellent.