Use of Vinylaromatic/1,3-diene copolymers stabilized with protective colloids in building adhesive formulations
AssigneeWacker Chemie AG
InventorsReinhard Härzschel, Theo Mayer, Hans-Peter Weitzel
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Abstract
The invention relates to the utilization of aqueous polymer dispersions or of polymer powders which can be redispersed in water and which are based on protective colloid-stabilized aromatic vinyl-1,3-diene-copolymers in adhesive formulations used in the building industry, whereby the polymer dispersion and the polymer powders are produced by emulsion polymerization of a mixture containing at least one aromatic vinyl and at least one 1,3-diene in the presence of one or more protective colloids, without using an emulsifier, and by optionally drying of the aqueous polymer dispersion obtained thereby.
Claims20
In a building adhesive formulation employing an aqueous polymer dispersion or a redispersible polymer powder prepared therefrom, the improvement comprising:
- employing as at least one aqueous polymer dispersion or redispersible polymer powder, an aqueous polymer dispersion obtained by emulsion polymerization of a mixture comprising at least one vinylaromatic and at least one 1,3-diene in the presence of one or more protective colloids, with exclusion of any emulsifier, or a dispersible polymer powder prepared from said aqueous polymer dispersion by drying said dispersion.
Dependencies are inferred from the claim text.