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US 9,919,969 B2Granted
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.
Claims7
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 primer coating onto the substrate surface, said primer 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, wherein the set inhibiting agent is selected from the group consisting of tetrasodiumpyrophosphate, tetrapotassiumpyrophosphate, aminotri(methylene-phosphonic acid), diethylenetriamine penta (methylene phosphonic acid) trisodium salt, hexamethylene diamine tetra(methylene phosphonic acid) and mixtures thereof, 0.05-2% of a polymer having a molecular weight less than 6,000 Daltons and 10-40% by weight water;
- and
- optionally applying a one- or two-coat veneer plaster or conventional plaster onto the substrate surface after the primer coating has dried.
1 more element
Dependencies are inferred from the claim text.