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US 2009/0263673 A1Published application
Coated building panels and articles containing calcium sulfate hemihydrate
AssigneeUnited States Gypsum Company
InventorsLee K. Yeung, Jeffrey F. Grussing, Christopher J. Borovka
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Abstract
A method of finishing an interior wall includes the steps of preparing a substrate of building panels comprising gypsum, cement or combinations thereof, said substrate having a surface, followed by applying a coating to the substrate, said coating comprising 1-30% by weight of a latex emulsion binder, 30-80% by weight calcium sulfate hemihydrate, up to about 8% by weight of a set inhibiting agent and 20-60% by weight water.
Claims19
A method of finishing an interior wall, comprising:
- preparing a substrate of panels comprising gypsum, cement or combinations thereof, said substrate having a surface;
- applying a coating to the substrate, said coating comprising 10-40% by weight of a latex emulsion binder, 30-80% by weight calcium sulfate hemihydrate, 0.1-2% by weight of a set inhibiting agent, 0.05-2% of a polymer having a molecular weight less than 6,000 Daltons and 10-40% by weight water.
A coated panel comprising:
- a building panel comprising one of the group consisting of gypsum panels, cement panels, panels having both gypsum and cement and mixtures thereof;
- and
- a coating comprising calcium sulfate hemihydrate in a matrix of a latex polymer, wherein said matrix further comprises a set inhibiting agent distributed throughout said matrix.
Dependencies are inferred from the claim text.