Method of conditioning organic pigments and resultant product

Claim 1

THE METHOD OF PRODUCING A FINELY-DIVIDED, SOLID ORGANIC PIGMENT OF HIGH TINCTORIAL STRENGTH, SOFT TEXTURE AND LOW VEHICLE ABSORPTION CHARACTERISTICS FROM A CRUDE DRY PIGMENT OF RELATIVELY LOW TINCTORIAL STRENGTH AND HARSH TEXTURE, WHICH COMPRISES PREPARING A MIXTURE OF SAID CRUDE DRY, POWDERY PIGMENT AND AN ORGANIC CONDITIONING AGENT SELECTED FROM THE GROUP CONSISTING OF POLYOLS, ETHERS OF POLYOLS, ESTERS OF POLYOLS, CHLORINATED DERIVATIVES OF SUCH POLYOLS AND MIXTURES OF SAID POLYOLS, ETHERS, ESTERS AND CHLORINATED DERIVATIVES, SAID CONDITIONING AGENT BEING LIQUID AND SUBSTANTIALLY NON-VOLATILE DURING THE GRINDING STEP HEREINAFTER SET FORTH AND BEING AT LEAST SLIGHTLY WATER SOLUBLE, AND BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 0.03 AND 0.25 PART BY WEIGHT CONDITIONING AGENT PER ONE PART BY WEIGHT OF PIGMENT, SAID AMOUNT OF SAID CONDITIONING AGENT BEING SUCH AS TO CONVERT SAID MIXTURE DURING THE GRINDING STEP HEREINAFTER SET FORTH INTO A DISCONTINUOUS MASS OF TOUGH, COMPACTED GRANULAR PARTICLES WHEREIN SAID PIGMENT SOLIDS ARE ADHESIVELY BOUND BY SAID CONDITIONING AGENT, AND SAID AMOUNT OF SAID CONDITIONING AGENT BEING NOT IN EXCESS OF THE SATURATION POINT OF THE MIXTURE AS INDICATED BY ITS FORMING INTO A DOUGHY OR PASTY MASS AT ANY TIME DURING THE OPERATION, SUBJECTING SAID MASS OF COMPACTED GRANULAR PARTICLES TO GRINDING BY INTERNAL SHEARING ACTION WHICH DEVELOPS AN ENERGY INPUT MORE THAN FOUR TIMES THAT REQUIRED FOR GRINDING SAID CRUDE PIGMENT IN THE ABSENCE OF SAID CONDITIONING AGENT AND MORE THAN FOUR TIMES THAT REQUIRED FOR GRINDING A MIXTURE OF SAID CRUDE PIGMENT AND SAID CONDITIONING AGENT IF IT WERE IN THE FORM OF A PASTY MASS, CONTINUING SAID GRINDING OF THE COMPACTED GRANULAR PARTICLES UNTIL THE PIGMENT POSSESSES THE DESIRED TINCTORIAL STRENGTH, AND REMOVING SAID CONDITIONING AGENT FROM THE THUS GROUND MASS BY EXTRACTING THE SAME WITH WATER.

Claim 2

THE METHOD OF PRODUCING A FINELY-DIVIDED, SOLID ORGANIC PIGMENT OF HIGH TINCTORIAL STRENGTH, SOFT TEXTURE AND LOW VEHICLE ABSORPTION CHARACTERISTICS FROM A CRUDE DRY PIGMENT OF RELATIVELY LOW TINCTORIAL STRENGTH AND HARSH TEXTURE, WHICH COMPRISES PREPARING A MIXTURE OF SAID CRUDE DRY, POWDERY PIGMENT AND AN ORGANIC CONDITIONING AGENT SELECTED FROM THE GROUP CONSISTING OF POLYOLS, ETHERS OF POLYOLS, ESTERS OF POLYOLS, CHLORINATED DERIVATIVES OF SUCH POLYOLS AND MIXTURES OF SAID POLYOLS, ETHERS, ESTERS AND CHLORINATED DERIVATIVES, SAID CONDITIONING AGENT BEING LIQUID AND SUBSTANTIALLY NON-VOLATILE DURING THE GRINDING STEP HEREINAFTER SET FORTH AND BEING AT LEAST SLIGHTLY WATER SOLUBLE, AND BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 0.03 AND 0.25 PART BY WEIGHT CONDITIONING AGENT PER ONE PART BY WEIGHT OF PIGMENT, SAID AMOUNT OF SAID CONDITIONING AGENT BEING SUCH AS TO CONVERT SAID MIXTURE DURING THE GRINDING STEP HEREINAFTER SET FORTH INTO A DISCONTINUOUS MASS OF TOUGH, COMPACTED GRANULAR PARTICLES WHEREIN SAID PIGMENT SOLIDS ARE ADHESIVELY BOUND BY SAID CONDITIONING AGENT, AND SAID AMOUNT OF SAID CONDITIONING AGENT BEING NOT IN EXCESS OF THE SATURATION POINT OF THE MIXTURE AS INDICATED BY ITS FORMING INTO A DOUGHY OR PASTY MASS AT ANY TIME DURING THE OPERATION, SUBJECTING SAID MASS OF COMPACTED GRANULAR PARTICLES TO GRINDING BY INTERNAL SHEARING ACTION WHICH DEVELOPS AN ENERGY INPUT MORE THAN FOUR TIMES THAT REQUIRED FOR GRINDING SAID CRUDE PIGMENT IN THE ABSENCE OF SAID CONDITIONING AGENT AND MORE THAN FOUR TIMES THAT REQUIRED FOR GRINDING A MIXTURE OF SAID CRUDE PIGMENT AND SAID CONDITIONING AGENT IF IT WERE IN THE FORM OF A PASTY MASS, CONTINUING SAID GRINDING OF THE COMPACTED GRANULAR PARTICLES UNTIL THE PIGMENT POSSESSES THE DESIRED TINCTORIAL STRENGTH, AND REMOVING SAID CONDITIONING AGENT FROM THE THUS GROUND MASS BY EXTRACTING THE SAME WITH WATER.