Clariant Corporation

Evonik Degussa Gmbh

Celanese Emulsions Gmbh

Michael Schottler

Ludwig Schmitz

Ulrich Geissler

Robert Walter Fuss

Stefan Hess

Christine Fliedner

Heinz-Peter Klein

Thomas Roehrig

Thomas Rohrig

Thomas Röhrig

An aqueous oil-in-water emulsion containing a propylethoxysilane oligomer mixture or a mixture of a propylethoxysilane oligomer mixture and octyltriethoxysilane in a weight ratio of 3:1 to 1:3, at least one emulsifier or an emulsifier system, at least one content of a 2-aminoethanol and water is used as an addition in the production of hydraulically setting cement mixtures such as mortar, screed or concrete for reduction of the shrinkage characteristics.

Use of aqueous emulsions based on propylethoxysilane oligomers as an additive in hydraulically setting cement compositions for reduction of shrinkage characteristics

A dispersion powder composition based on water-insoluble polymers with particularly low water absorption comprises, based on the total weight of the polymer, an amount in the range from 0.1 to 30% by weight of at least one carboxylic ester whose acid component has at least 6 carbon atoms and whose alcohol component is a polyhydroxy compound, preferably glycerol, diglycerol, or triglycerol. This is prepared by mixing polymer and protective colloid with the carboxylic ester to prepare a dispersion and then, where appropriate, drying this with simultaneous admixing of an anticaking agent, and gives good results when used for modifying wallpaper pastes, mortars, or concrete.

Redispersible dispersion powder composition, its use, and process for its preparation

Dispersion powders comprising partially acetalized, water-soluble polyvinyl alcohols, the use of these, and process for their preparation

Dispersion powders including (a) a polymer of vinyl ester, vinyl ester/ethylene, (meth)acrylate or styrene/acrylate homo- and copolymers, (b) 1 to 25% by weight, based on the total weight of the polymer, of a protective colloid, (c) 0.1 to 10% by weight, based on the total weight of the polymer, of at least one saturated carboxylic acid ester of the formula C.sub.n H.sub.(2n+1) COOC.sub.m H.sub.(2m+1) where n=5 to 22 and m=1 to 8, and (d) 0 to 20% by weight, based on the total weight of the polymer, of anticaking agent, are useful, for example, as modifying agents in mortar and concrete for increasing the flexural tensile strength, compressive strength, and/or adhesive strength thereof.

Dispersion powders and method of preparation and use thereof

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Bischofsheim, Germany

Michael Schottler