Evonik Degussa Gmbh

Rotec Rohstoff-technik Gmbh & Co. Kg

Evonik Goldschmidt Corporation

Evonik Industries Ag

Markus Roos

Frauke Henning

Frank Koenig

Ralph Scheuermann

Bernd Weyershausen

Stefan Stadtmüller

Guido Runkel

Anke Reinschmidt

George-Hans Bayne

Kerstin Klein

Stefan Stadtmueller

Andreas Vetter

Jörn Heissing

The invention relates to granular pumice, wherein the surface is covered with a hydrophobic coating.

Granular pumice and method for producing granular pumice

The present application relates to compositions comprising at least one siloxane and at least one superplasticizer based on polycarboxylate ethers or sulphonates of lignin, melamine or naphthalene or of resins thereof, and to the use of such compositions as or in building-product mixtures or building products, especially mortar mixtures or concrete mixtures. Preferably the siloxane is a branched siloxane containing at least one 'T' unit and containing at least two different polyoxyalkylene moieties.

Defoamer compositions for building-product mixtures

The present invention relates to cement-containing compositions which are characterized in that they have a proportion of organosilicon compounds of greater than 0.15% by weight, based on the proportion of cement, the organosilicon compounds being based on at least one organosilicon compound selected from the group consisting of the alkoxysilanes and at least one selected from the group consisting of the alkoxysiloxanes, to a process for the preparation thereof and to the use thereof.

Hydrophobized cement-containing compositions

Growing community of inventors

Essen, Germany

Markus Roos