WO 2,011,073,164
Stain-blocking aqueous coating composition (said composition comprising (a) a styrene acrylic resin and, (b) a substituted styrene acrylate copolymer, wherein, by weight, said styrene acrylic resin is provided in excess of said substituted styrene acrylate copolymer. A method is also disclosed whereby this waterborne coating composition is applied to a substrate comprising water extractable staining agents, such as a tannin-containing open grain natural wood).