DEFOAMING AGENT COMPOSITION AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a defoaming agent composition having superior defoaming performance and suitable for the defoaming treatment of black liquor in the pulp industry and the paper-manufacturing industry or of aqueous foaming solutions such as waste water in various industries, and to provide a method for producing the composition. SOLUTION: The defoaming agent composition contains (A) base oil comprising a liquid hydrocarbon oil, (B) an amide derivative of a 10-25C fatty acid and (C) metallic soap. In the method for producing the composition, a suspension containing the components (A), (B) and (C) is heated to fuse the components (B) and (C) and then fine particles of the components (B) are deposited by cooling.