Polar-nonpolar solvent system for deoiling hydrocarbon...

Details Polar-nonpolar solvent system for deoiling hydrocarbon... Polar-nonpolar solvent system for deoiling hydrocarbon...

C - Chemistry, Metallurgy

07

C

260/530.3

C07C 303/44 (2006.01) C07C 309/62 (2006.01)

Patent

CA 1150310

28140 Abstract of Disclosure 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.

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