| 摘要 |
<p>DEFOAMING COMPOSITION A defoaming composition for controlling and suppressing foam and dispersed air in aqueous systems. The composition of this invention is particularly useful in pulp and paper mill operations and comprises: a) a polyoxyethylene adduct of a polyoxypropylene hydrophobic base, said hydrophobic base having a molecular weight of about 3500 to 4500 and an oxyethylene content of about 2 to 20 percent by weight of the total molecule, b) a water insoluble solvent, c) a normally solid fatty acid amide, and d) a fatty alcohol mixture which may also include other hydrocarbons. In addition to the above, the composition may include hydrophobic silica particles.</p> |
