Phospholipid dedusting agents for joint compounds
AssigneeUnited States Gypsum Company
InventorAlexander J. Donovan
Life of this patent
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Abstract
A drying-type joint compound, a setting-type joint compound, and/or a ready-mixed, setting-type joint compound can include a phospholipid dedusting agent. For example, a drying-type joint compound can include: (a) a primary filler at 50 weight percent (wt %) to 98 wt % on a dry basis, wherein the primary filler includes one of calcium carbonate, calcium sulfate dihydrate, and talc, and a mixture thereof (b) a secondary filler at up to 25 wt % on a dry basis; (c) a binder at 1 wt % to 15 wt % on a dry basis; (d) a polymer thickener at 0.05 wt % to 3 wt % on a dry basis; (e) a phospholipid dedusting agent at 0.01 wt % to 3 wt % on a dry basis; (f) an additive up to 10 wt % o on a dry basis; and (g) water at a weight ratio of water to dry components of 1:6 to 2:1.
Claims19
A joint compound comprising in weight percent on a dry basis:
- about 25% to about 98% filler, about 1% to about 45% binder, and about 0.01% to about 3% phospholipid dedusting agent, wherein the phospholipid dedusting agent comprises one or more of phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidylglycerol.
A joint compound consisting essentially of in weight percent on a dry basis:
- about 25% to about 98% filler,
- about 1% to about 45% binder, and
- about 0.01% to about 3% phospholipid dedusting agent,
- wherein the phospholipid dedusting agent consists essentially of one or more phospholipids conjugated with one or more of a polyethylene glycol, a polyethylene oxide, a fluorescent dye, a chromogenic dye, a protein, a peptide, a carbohydrate, a sterol, a fatty acid, and a synthetic polymer.
A setting-type joint compound comprising in weight percent on a dry basis:
- a calcium sulfate hem ihydrate at about 20 weight percent (wt %) to about 99 wt % of the setting-type joint compound on a dry basis;
- up to about 30% filler,
- up to about 8 wt % the binder;
- up to about 2 wt % the polymer thickener;
- and
- about 0.01% to about 3% phospholipid dedusting agent, wherein the phospholipid dedusting agent comprises one or more of phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidylglycerol.
A setting-type joint compound consisting essentially of in weight percent on a dry basis:
- a calcium sulfate hemihydrate at about 20 weight percent (wt %) to about 99 wt % of the setting-type joint compound on a dry basis;
- up to about 30% filler,
- up to about 8 wt % the binder;
- up to about 2 wt % the polymer thickener;
- and
- about 0.01% to about 3% phospholipid dedusting agent, wherein the phospholipid dedusting agent consists essentially of one or more phospholipids conjugated with one or more of a polyethylene glycol, a polyethylene oxide, a fluorescent dye, a chromogenic dye, a protein, a peptide, a carbohydrate, a sterol, a fatty acid, and a synthetic polymer.
Dependencies are inferred from the claim text.