Henkel Ag & Company, Kgaa

Th. Goldschmidt Ag

Manfred Grasse

Gotz Koerner

Roland Sucker

Eckehard Schamberg

Herwig Fritsch

Udo Windhövel

Caroline Pfefferle

Katharina Lehmkuehler

The present disclosure provides a building material composition which is suitable in particular for use as a bitumen-free sealant for sealing structures and contains a polymer dispersion or a corresponding redispersion powder, in particular based preferably on emulsion polymers which are redispersible in an aqueous medium, together with polystyrene particles, hollow ceramic and synthetic microspheres and, if appropriate, at least one binder and, if appropriate, further additives. The sealant according to the invention can in principle be formulated as a 1C or 2C application system. In addition to excellent sealing properties, as can conventionally be achieved only with bitumen-containing sealants, the bitumen-free building material composition according to the invention shows in particular excellent shrinkage behavior after application.

Building material composition, especially bitumen-free sealant

A composition is disclosed which is useful for the water-repellent impregnation of porous mineral building materials. The composition is based on organosilicon compounds which contain alkoxy groups and comprises an emulsion which contains 2.5 to 25% by weight of an alkoxysilane of the formula

Preparation for the water-repellent impregnation of porous mineral

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Unna, Germany

Manfred Grasse