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US 11,760,692 B2Granted
Setting type joint compound compositions with reduced plaster
AssigneeUnited States Gypsum Company
InventorsChristian Huch, Alexander J. Donovan, Jeffrey F. Grussing, Naveen Punati, Pamela L. Hargrove, Joseph W. Schlude
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Abstract
A snap-setting joint compound with reduced calcium sulfate hemihydrate and improved sandability, as well as methods for building wall assemblies and repairing walls with the joint compound.
Claims10
A dry-powder setting-type joint compound, the setting-type joint compound comprising:
- calcium sulfate hemihydrate in an amount from 28 wt % to 50 wt %;
- calcium carbonate in an amount such that the total amount of calcium sulfate hemihydrate and calcium carbonate is 80 wt % to 95 wt %;
- a starch binder;
- a redispersible latex binder;
- one or more of kaolin clay, sepiolite, bentonite, montmorillonite clay, attapulgite clay, or any mixture thereof;
- a rheological modifier;
- a cellulosic thickener;
- a set retarder;
- and
- a set accelerator.
7 more elements
Dependencies are inferred from the claim text.