Patent ID: 8343634

Claim:
A composite panel prepared using a moisture resistance additive useful for preparing composite panels, the composite panel comprising: gypsum, cellulose, or combinations thereof; and the moisture resistance additive, wherein the moisture resistance additive is provided as an emulsion comprising: from about 10 to about 50 weight percent of a triglyceride having a saponification value of at least 150 and an iodine value of at least 35; from 0 to about 20 weight percent of a hydrocarbon wax; from about 0.5 to about 3 weight percent of a linear C 12 to C 22 fatty acid; a compound or compounds selected from the group consisting of an amine, an inorganic base, and mixtures thereof, and at least partially saponify the triglyceride, wherein the amine, when present, comprises from 0.5 to 3 weight percent of the emulsion, and wherein the inorganic base, when present, comprises from 0.5 to 6 weight percent of the emulsion; from 0.5 to about 10 weight percent of at least one non-ionic emulsifier comprising a fatty acid ester of a polyalcohol; and water.