Foam control compositions for aqueous systems, its preparation, and process using same

A foam control composition, and methods for its production and use, is disclosed, which comprises a liquid hydrocarbon carrier, an organic emulsifier, an amide of a fatty acid, and, optionally, a silicone oil. Composition is useful in controlling foam encountered in preparation of paper pulp, resinous materials, and in the treatment of waste systems and cooling towers. The foam control composition is prepared by (a.) combining the amide, emulsifier and from about 1/5 to about 1/2 of the liquid hydrocarbon carrier, (b.) heating until a clear melt is obtained, (c.) rapidly adding to said melt the remainder of said liquid hydrocarbon carrier to cool the melt to a temperature of from ca. 150 DEG F. to ca. 200 DEG F., and (d.) allowing the cooled mixture to further cool to a temperature of from about ambient to about 135 DEG F.