Wacker Chemie Ag

Wacker Polymer Systems Gmbh & Co. Kg

Armin Hoffmann

Abdulmajid Hashemzadeh

Harald Zeh

Thomas Bastelberger

Hermann Lutz

Ulf Dietrich

Jürgen Bezler

Stefan Bonimeier

Juergen Bezler

The present invention relates to aqueous dispersions or polymer powders which are redispersible in water, based on a) 2-ethylhexylacrylate, b) n-butylacrylate, c) one or more ethylenically unsaturated monomers, the homopolymer of which has a glass transition temperature Tg of &#x2265;50&#xb0; C., d) optionally one or more ethylenically unsaturated monomers containing acid groups, e) optionally one or more ethylenically unsaturated monomers containing silane groups and f) optionally one or more additional ethylenically unsaturated monomers which are different to the aforementioned monomers, characterised in that the polymers are based on 2-ethylhexylacrylate from 60 to 99 wt % and on n-butylacrylate from 1 to 40 wt %, each relative to the total weight of ethylhexylacrylate a) and n-butylacrylate b).

Polymers for dirt-repellent coatings

The invention provides for the use of dry building materials comprising one or more polymers in the form of water-redispersible powders, and optionally mineral binders, optionally fillers and optionally additives, for the surface treatment of cementitious substrates that are as yet not fully set.

Surface treatment of cementitious substrates

Polyvinyl-alcohol-stabilized redispersible powders which have plasticizing properties are obtained by drying polyvinyl-alcohol-stabilized aqueous dispersions of polymers of one or more monomers from the group of vinyl esters of optionally branched Calkylcarboxylic acids, (meth)acrylic esters of optionally branched Calcohols, dienes, olefins, vinylaromatics and vinylhalides,

Polyvinyl-alcohol-stabilized redispersible powders with plasticizing properties

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Neuoetting, Germany

Armin Hoffmann