Sika Technology Ag

André Peter

Franz Wombacher

Christian Bürge

Christophe Kurz

Christian Buerge

Christian M BÜRGE

The invention relates to the use of caramelized sugar as a liquefier for mineral binding agent compositions.

Caramelized sugar as liquefier for mineral binding agent compositions

Aqueous polymer dispersions, which, in addition to water and a dispersed copolymer composed of at least two monomers selected from the group consisting of ethylene, propylene, butylene, isoprene, butadiene, styrene, acrylonitrile, acrylic acid, methacrylic acid, acrylic acid alkyl ester, methacrylic acid alkyl ester, vinyl ester, and vinyl chloride, also comprises a comb polymer having side chains that are bound to the main chain by ester or ether groups. The aqueous polymer dispersions are particularly suited for use together with hydraulic and latently hydraulic binding agents. The aqueous polymer dispersions are extremely efficient and result in a strong increase in the mechanical values and a relevant decrease in the porosity and the water absorption property.

Aqueous polymer dispersions

Exemplary embodiments as disclosed herein are directed to setting and curing accelerators for hydraulic binders, including at least one ester of a polyhydric alcohol with an acid and/or salts thereof, where the acid is a phosphoric acid, phosphorous acid or a Cto Ccarboxylic acid. Compositions including at least one accelerator as disclosed herein can accelerate the setting and curing of hydraulic binders and mortar or concrete produced therefrom, such as quick-setting cement. Methods for accelerating the setting and curing of hydraulic binders and mortar or concrete produced therefrom are also disclosed.

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Effretikon, Switzerland

André Peter