Use of poly (propylene oxide) or ethylene oxide-propylene oxide copolymers in combination with starch ether derivatives as an additive in dry mortar compositions

摘要

Use of a combination of adhesion promoter additives composed of one or more poly (alkylene oxides) of the group comprising poly (propylene oxides) and ethylene oxide-propylene oxide copolymers and one or more ether derivatives of starch of the group comprising ethers of carboxyalkylamidon and its alkaline salts, and hydroxyalkyl starch ethers, in mortar compositions comprising mineral binders and water-redispersible polymer powders, characterized in that the combination of additives is part of the water-redispersible polymer powder .