FOAMED COATING COMPOSITION AND METHOD FOR COATING A SUBSTRATE WITH SUCH COATING COMPOSITION

The invention relates to a method for coating a substrate comprising: a) providing a liquid aqueous coating composition， the composition comprising an acrylic resin as binder， one or more surfactants， a coalescence solvent， and a thickener; b) foaming the liquid aqueous coating composition to obtain a foamed coating composition; c) applying a layer of the foamed coating composition on the substrate; and d) allowing gas to escape from the layer of foamed coating composition and allowing the coating composition to dry to form a homogeneous non-foam dried coating， wherein the liquid aqueous coating composition provided in step a) comprises the acrylic resin in a concentration in the range of from 1 to 20 wt%， comprises the thickener in a concentration in the range of from 0.05 to 2.0 wt%， and has a solids content of at most 25 wt%， based on the total weight of the liquid aqueous coating composition. The invention further relates to foamed aqueous coating composition obtainable by steps a) and b). The invention relates to a method for coating a substrate comprising: a) providing a liquid aqueous coating composition， the composition comprising an acrylic resin as binder， one or more surfactants， a coalescence solvent， and a thickener; b) foaming the liquid aqueous coating composition to obtain a foamed coating composition; c) applying a layer of the foamed coating composition on the substrate; and d) allowing gas to escape from the layer of foamed coating composition and allowing the coating composition to dry to form a homogeneous non-foam dried coating， wherein the liquid aqueous coating composition provided in step a) comprises the acrylic resin in a concentration in the range of from 1 to 20 wt%， comprises the thickener in a concentration in the range of from 0.05 to 2.0 wt%， and has a solids content of at most 25 wt%， based on the total weight of the liquid aqueous coating composition. The invention further relates to foamed aqueous coating composition obtainable by steps a) and b).