Method of dispersing calcium carbonate in a non-volatile carrier

Claim 1

THE PROCESS OF FORMING A STABLE DISPERSION OF CALCIUM CARBONATE IN A NON-VOLATILE CARRIER WHICH COMPRISES: A. ADMIXING UNDER ATMOSPHERIC CONDITIONS OF TEMPERATURE AND PRESSURE (1) AN OIL SOLUBLE DISPERSING AGENT SELECTED FROM THE CLASS CONSISTING OF SULFONIC ACIDS, METAL SULFONATES, AMMONIUM SULFONATES, AND AMINE SULFONATES WHEREIN THE MOLECULAR WEIGHT OF THE HYDROCARBON PORTION OF SAID DISPERSING AGENT VARIES FROM 350 TO 1000 (2) A VOLATILE HYDROCARBON SOLVENT FOR SAID OIL SOLUBLE DISPERSING AGENT (3) A NON-VOLATILE CARRIER SELECTED FROM THE CLASS CONSISTING OF MINERAL LUBRICATING OILS AND SYNTHETIC LUBRICANTS FOR SAID OIL SOLUBLE DISPERSING AGENT (4) AN ALIPHATIC ALCOHOL SOLUTION WHEREIN THE ALCOHOL CONTAINS FROM 1 TO 6 CARBON ATOMS, OF AN OIL INSOLUBLE CALCIUM INORGANIC BASE CONSISTING OF THE REACTION PRODUCT BETWEEN HYDROGEN SULFIDE AND A CALCIUM INORGANIC COMPOUND WHEREIN THE ANION OF SAID COMPOUND 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 1 1/2 TO 4 1/2 TIMES THAT REQUIRED TO REACT WITH THE SULFONIC ACID WHERE THIS MATERIAL IS USED AS DISPERSING AGENT AND 1/2 TO 31/2 TIMES THE NUMBERE 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 CALCIUM CARBONATE IN PARTICLES, THE DIAMETERS OF WHICH ARE LESS THAN 0.25 MICRON, BY PASSING CARBON DIOXIDE THROUGH SAID MIXTURE TO CONVERT THE EXCESS CALCIUM INORGANIC BASE TO CARBONATE, AND THEN C. REMOVING THE RESIDUAL SOLVENTS BY EVAPORATION.