Method for imparting water-repellency to construction materials

US3956570A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Erhard Bosch
• Karl Braunsperger · Burghausen, DE
• Herbert Gluck · Burghausen, DE
• Ewald Pirson · Burghausen, DE
• Michael Roth

Key dates

• Filing date: Sep 19, 1973
• Grant date: May 11, 1976
• Expiry date: Sep 19, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B41/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for imparting water repellency to construction materials which comprises treating said materials with a solution containing alkali metal organosiliconates of which at least 10 percent of the alkali metal organosiliconates are alkali metal propylsiliconates.