Preparation of metal petroleum sulfonates

Claim 2

IN A METHOD FOR PRODUCING A MATERIAL HAVING DETERGENT AND DISPERSANT PROPERTIES WHICH COMPROSES SULFONATING A HYDROCARBON FRACTION HAVING A VISCOSITY BETWEEN ABOUT 120 AN 700 SUS AT 210*F., NEUTRALIZING THE RESULTING SULFONIC ACID WITH AMMONIA, EXTRACTING THE RESULTANT NEUTRALIZED SULFONATION MIXTURE WITH A LIQUID ORGANIC SOLVENT, AND CONVERTING THE RESULTANT AMMONIUM PETROLEUM SULFONATES TO METAL PETROLEUM SULFONATES, THE IMPROVEMENT COMPRISING ADDING TO SAID METAL PETROLEUM SULFONATESA SELECTIVE SOLVENT TO CAUSE THE FORMATION OF TWO IMMISCIBLE LAYERS INCLUDING A BOTTOM LAYER CONTAINING OIL-INSOLUBLE METAL PETROLEUM SULFONATES, SAID SELECTIVE SOLVENT CONSISTING OF AN ALIPHATIC LIQUID KETONE HAVING AT LEAST FOUR CARBON ATOMS PER MOLECULE, ISOLATING SAID BOTTOM LAYER AND TREATING THE SAME WITH AN ACID HAVING AT IONIZATION CONSTANT GREATER THAN 1X10-5 IN AN AMOUNT SUFFICIENT TO RENDER OIL-SOLUBLE SAID OIL-INSOLBLE METAL PETROLEUM SULFONATE.

Claim 3

IN A METHOD FOR PRODUCING A MATERIAL HAVING DETERGENT AND DISPERSANT PROPERTIWS WHICH COMPRISES SULFONATING A PROPANE-FRACTIONATED, SOLVENT-EXTRACTED AND DEWAXED MID-CONTINENT CRUDE DISTILLATE HAVING A VISCOSITY IN THE RANGE OF 200-230 SUS AT 210*F., NEUTRALIZING THE RESULTING SULFONIC ACIDS WITH ANHYDROUS AMMONIA, EXTRACTIN THE RESULTING AMMONIUM PETROLEUM SULFONATES WITH ISOPROPYL ALCOHOL, AND CONVERTING SAID AMMONIUM PETROLEUM SULFONATES TO ALKALINE EARTH METAL PETROLEUM SULFONATES BY REACTION WITH A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE SALTS, OXIDES, AND HYDROXIDES OF ALKALI METALS AND ALKALINE EARTH METALS, THE IMPROVEMENT COMPRISING DISSOLVING THE RESULTING METAL PETROLEUM SULFONATES IN METHYL ISOBUTYL KETONE, COOLING THE RESULTING ADMIXTURE TO A TEMPERATURE IN THE RANGE OF 50-70*F. TO CAUSE THE SAME TO STRATIFY INTO TWO IMMISCIBLE LAYERS INCLUDING A TOP LAYER COMPRISING PREFERENTIALLY OIL-IM SOLUBLE METAL PETROLEUM SULFONATES, OSOLATING SAID TOP LAYER AND COOLING THE SAME TO A TEMPERATUE IN THE RANGE OF 10-30*F. TO CAUSE THE SAME TO STRATIFY TO TWO IMMISCIBLE LAYERS INCLUDING THE BOTTOM LAYER COMPRISING SAID PREFERENTIALLY OIL-INSOLUBLE METAL PETROLEUM SULFONATES, ISOLATING SAID BOTTOM LAYER AND TREATING THE SAMEWITH ONE GRAM OF DRY HYDROGEN CHLORIDE GAS PER 200-800 GRAMS OF SAID OIL-INSOLUBLE METAL PETROLEUM SULFONATES, AND RECOVERING THE RESULTING OIL SOLUBLE METAL PETROLEUM SULFONATES.

Claim 4

IN A METHOD FOR PRODUCING A MATERIAL HAVING DETERGENT AND DISPERSANT PROPERTIWS WHICH COMPRISES SULFONATING A PROPANE-FRACTIONATED, SOLVENT-EXTRACTED AND DEWAXED MID-CONTINENT CRUDE DISTILLATE HAVING A VISCOSITY IN THE RANGE OF 200-230 SUS AT 210*F., NEUTRALIZING THE RESULTING SULFONIC ACIDS WITH ANHYDROUS AMMONIA, EXTRACTIN THE RESULTING AMMONIUM PETROLEUM SULFONATES WITH ISOPROPYL ALCOHOL, AND CONVERTING SAID AMMONIUM PETROLEUM SULFONATES TO ALKALINE EARTH METAL PETROLEUM SULFONATES BY REACTION WITH A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE SALTS, OXIDES, AND HYDROXIDES OF ALKALI METALS AND ALKALINE EARTH METALS, THE IMPROVEMENT COMPRISING DISSOLVING THE RESULTING METAL PETROLEUM SULFONATES IN METHYL ISOBUTYL KETONE, COOLING THE RESULTING ADMIXTURE TO A TEMPERATURE IN THE RANGE OF 50-70*F. TO CAUSE THE SAME TO STRATIFY INTO TWO IMMISCIBLE LAYERS INCLUDING A TOP LAYER COMPRISING PREFERENTIALLY OIL-IM SOLUBLE METAL PETROLEUM SULFONATES, OSOLATING SAID TOP LAYER AND COOLING THE SAME TO A TEMPERATUE IN THE RANGE OF 10-30*F. TO CAUSE THE SAME TO STRATIFY TO TWO IMMISCIBLE LAYERS INCLUDING THE BOTTOM LAYER COMPRISING SAID PREFERENTIALLY OIL-INSOLUBLE METAL PETROLEUM SULFONATES, ISOLATING SAID BOTTOM LAYER AND TREATING THE SAMEWITH ONE GRAM OF DRY HYDROGEN CHLORIDE GAS PER 200-800 GRAMS OF SAID OIL-INSOLUBLE METAL PETROLEUM SULFONATES, AND RECOVERING THE RESULTING OIL SOLUBLE METAL PETROLEUM SULFONATES.