Abstract: The present invention relates to a paint based on at least one polymer dispersion with pigments, fillers, thickeners, dispersants and additives, said paint containing: a) 2-20 wt-% polymer dispersion calculated as a solid component, b) 2-35 wt-% pigments, c) 5-60 wt-% fillers having a particle diameter of 0.1-200 ?m d) 0.1-3 wt-% thickeners, e) 0.1-2 wt-% dispersants, and a maximum of 5 wt-% additives and water to make up to 100%, with the proviso that the dispersion has a viscosity of 2.0 to 5·102 m Pa/s, the viscosity being determined at a shear rate of 30,000·1/s with a capillary rheometer.

Abstract: Use of finely divided aqueous cationic dispersions of synthetic resins obtainable by emulsion polymerization from suitable monomers and which contain cationic dispersion polymers, as impregnants and primers for consolidating and priming of porous absorbent substrates, preferably inorganic substrates such as, for example, masonry, concrete, plaster surfaces, gypsum surfaces, bricks or wood, by treating these substrates with the aqueous cationic dispersions whose polymer particles have mean particle diameters of 0.02 to 0.2 .mu.m.Aqueous cationic dispersions of synthetic resins exhibit a superior penetrating and permeating power, in particular on smooth plaster surfaces and smooth gypsum surfaces, compared with aqueous anionic or non-ionic dispersions of synthetic resins.