Method of dispersing barium carbonate in a non-volatile carrier

Claim 1

THE PROCESS OF FORMING A STABLE DISPERSION OF BARIUM CARBONATE IN A MINERAL OIL WHICH COMPRISES: (A) ADMIXING UNDER ATMOSPHERIC CONDITIONS OF TEMPERATURE AND PRESSURE (1) 1 PART OF AN OIL SOLUBLE DISPERSING AGENT SELECTED FROM THE CLASS CONSISTING OF SULFONIC ACIDS, METAL SULFONATES, AMMONIUM SULFONATES, AND AMINE SULFONATES, (2) 0.5 PARTS OF VOLATILE HYDROCARBON SOLVENT FOR SAID OIL SOLUBLE DISPERSING AGENT, (3) 1/3 TO 2 PARTS OF A MINERAL OIL, (4) AN ALIPHATI ALCOHOLIC SOLUTION OF AN OIL INSOLUBLE BARIUM INORGANIC BASE WHEREIN THE ALIPHATIC ALCOHOL CONTAINS FROM 1 TO 3 CARBON ATOMS AND THE ANION OF SAID BASE IS SELECTED FROM THE GROUP CONSISTING OF OXIDE AND HYDROXIDE RADICALS AND CHARACTERIZED FURTHER IN THAT THE AMOUNT OF SAID INORGANIC BASE VARIES FROM ABOUT 11/2 TO 4 TIMES THAT REQUIRED TO REACT WITH THE SULFONIC ACID WHERE THIS MATERIAL IS USED AS DISPERSING AGENT AND 1/2 TO 3 TIMES THE NUMBER OF CHEMICAL EQUIVALENTS OF THE DISPERSING AGENT WHERE SAID DISPERSING AGENT IS A SALT OF A SULFONIC ACID; (B) CONDENSING FROM THE RESULTING MIXTURE AT ATMOSPHERIC PRESSURE AN OIL-INSOLUBLE BARIUM CARBONATE IN PARTICLES, THE DIMETERS OF WHICH ARE LESS THAN 0.25 MICRONS, BY PASSING CARBON DIOXIDE THROUGH SAID MIXTURE TO CONVERT THE EXCESS BARIUM INORGANIC BASE TO THE CARBONATE, AND THEN (C) REMOCING THE RESIDUAL SOLVENTS FOR EVAPORATION.