Marathon Oil Company

Larry M Echelberger

Perry A Argabright

Brian L Phillips

Paul S Ossip

Addition of small amounts of water and small amounts of neutral oleophilic organic compounds, e.g., alcohols, phenols, aldehydes, ketones, and esters to product mixtures produced by treatment of hydrocarbons with sulfur trioxide, followed by neutralization with an inorganic hydroxide, and comprising oleophilic petroleum sulfonates, together with undesired hydrophilic petroleum sulfonates and inorganic salts, causes separation of a lower phase containing substantial quantities of said undesired constituents and permitting ready recovery of said oleophilic hydrocarbon sulfonates. The products are particularly useful in micellar systems for the secondary-type recovery of petroleum.

Purification of oleophilic hydrocarbon sulfonate product mixtures

Metals can be removed from aqueous solutions by contacting such solutions with a composition formed by reacting polyisocyanurate salts with synthetic resins. The resulting composition contains polyisocyanurate salt groups which act as exchange sites for removing the metals from solution. Regeneration by treatment with suitable inorganic metal salts and use of chloromethylated synthetic resins in the forming of the polymer are utilized in preferred embodiments.

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Robinson, IL, United States of America

Larry M Echelberger