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US 8,709,609 B2Granted
Stain-blocking aqueous coating composition
AssigneeAkzo Novel Coatings International B.V.
InventorsAlice Jungen, Jorg Rudiger Schulz, Thomas Bernhofer
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Abstract
A stain blocking water borne coating composition is disclosed, 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 water-borne coating composition is applied to a substrate comprising water extractable staining agents, such as a tannin-containing open grain natural wood.
Claims13
A stain blocking water borne coating composition comprising
- (a) a styrene acrylic resin having a glass transition temperature (Tg) in the range from 5° C. to 95° C.;
- and,
- (b) a substituted styrene acrylate copolymer having a glass transition temperature (Tg) in the range from 10° C. to 50° C.,
- wherein, by weight, said styrene acrylic resin is provided in excess of said substituted styrene acrylate copolymer such that the ratio by weight of the styrene acrylic resin to the substituted styrene acrylate copolymer is in the range from 80:20 to 55:45.
1 more element
Dependencies are inferred from the claim text.