Tape joint compound composition using unborated hydroxypropyl guar
AssigneeAqualon Company
InventorThomas J. Podlas
Life of this patent
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Abstract
An improved joint compound is provided that has from about 0.2 to about 0.9% of a thickener system selected from unborated hydroxypropylguar or a blend of an unborated hydroxypropylguar and 1-3% of a cellulose ether. This thickener system is either in dry form or as a fluid suspension. This joint compound is useful for the installation of wall board paneling in residential commercial, and industrial buildings.
Claims22
In an improved joint compound composition having limestone, clay, binder, water, and a thickener as the main ingredients, the improvement comprising using from about 0.2 to about 0.9%, by weight based on the dry ingredients, of a thickener system selected from the group consisting of (i) an unborated hydroxypropylguar having less than 200 ppm of borate present and (ii) a blend of an unborated hydroxypropylguar and 1-3% of a cellulose ether.
In an improved joint compound composition having limestone, clay, binder, water, and a thickener as the main ingredients, the improvement comprising using from about 0.2 to about 0.9%, by weight based on the dry ingredients, of a thickener system selected from the group consisting of (i) a borated hydroxypropylguar having greater than 200 ppm of borate present and a complexing agent and (ii) a borated hydroxypropylguar, a complexing agent, and a cellulose ether.
Dependencies are inferred from the claim text.