Wacker-Chemie Gmbh

Herbert Gluck

Michael Roth

Erhard Bosch

Karl Braunsperger

Ewald Pirson

A method for imparting water repellency to absorbent inorganic building materials by first contacting at least a part of the surface of the building materials to be rendered water repellent, with at least partially liquid water and thereafter applying a solution containing an organosilicon compound and a water-immiscible organic solvent to the moist surface of the inorganic building materials.

Method for imparting water repellency to absorbent inorganic building

A process for imparting hydrophobic and oleophobic properties to inorganic materials which comprises applying to the inorganic materials a composition containing (a) a solution or dispersion of a fluorine-containing organic polymer or a solution of a water soluble polymer of an unsaturated carboxylic acid and (b) a solution of an organosilicon compound having on the average 0.9 to 1.8 hydrocarbon radicals per silicon atom.

Process and composition for rendering surfaces hydrophobic and oleophobic

The invention relates to hydrophobic compositions and to a method for preparing hydrophobic compositions by mixing an aqueous suspension of finely divided solids containing dissolved salts of metals with an aqueous solution of alkali metal organosiliconates to form substantially water insoluble metal organosiliconates.

Hydrophobic compositions

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.

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Burghausen, Germany

Herbert Gluck