| 摘要 |
<p>28140 Hydrocarbon sulfonates, e.g., petroleum sulfonates, are separated from unsulfonated hydrocarbon e.g., petroleum hydrocarbon oil, by employing a mixture or solvent system comprising an immiscible polar and a nonpolar component. Preferably the immiscible polar component is a carboxylic acid having from 1 to about 4 carbon atoms e.g., formic acid, and the nonpolar hydrocarbon is one containing 3 to about 12 carbon atoms and can be at least one of an alkane, cycloalkane, aromatic and alkylated aromatic, an alkene, or a cycloalkene. A petroleum sulfonate is separated from unsulfonated petroleum oil employing a mixture of formic acid and n-octane.</p> |
