Wacker Chemie Ag

Anke Reinschmidt

Ulf Dietrich

Hardy Herold

Kenneth Kempinski

Gary P Fischer

The invention provides for the use of coating compositions based on one or more mineral binders, one or more polymers, one or more fillers, and, if desired, one or more additives for producing roof coatings, the coating compositions comprising at least 50% by weight of polymers, based on the dry weight of the polymers and of the mineral binders.

Flexible watertight roof coatings

Dispersing agents especially useful as cement plasticizers are copolymers obtained by polymerizing a) 5 to 70 percent by weight of ethylenically unsaturated monocarboxylic acids, carboxylic acid amides, dicarboxylic acids, or their anhydrides and/or (meth)acrylic acid monoesters of dialcohols, b) 1 to 40 percent ethylenically unsaturated, sulfonate-functional or sulfate-functional compounds, c) 10-80 percent of ethylenically unsaturated compounds of polyethylene glycols containing 1 to 300 ethylene oxide units, and terminal OH groups or &#x2014;OR' ether groups, d) 5 to 80 percent of ethylenically unsaturated compounds of polyalkylene glycol containing 1 to 300 Calkylene oxide units and terminal OH groups or &#x2014;OR&#x2032; ether groups, the percentages totaling 100 percent by weight.

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Macungie, PA, United States of America

Anke Reinschmidt