Method of coating mineral particles

Claim 1

THE METHOD OF FORMING RESINOUS COATINGS ON A PLURALITY OF DISCRETE MINERAL PARTICLES WHICH ARE SUBSTANTIALLY INERT TO A NON-AQUEOUS LIQUID COMPOUND POLYMERIZABLE BY DRY ACTIVATED CLAY CATALYST, SAID COMPOUND BEING A MONOMER OF THE GROUP CONSISTING OF STYRENE, ALPHA-METHYL STYRENE, INDENE, PARA DIVINYL BENZENE, ORTHO DIVINYL BENZENE, AND ISOBUTYLENE; WHICH COMPRISES THOROUGHLY ADMIXING SAID DISCRETE PARTICLES AND SAID NONAQUEOUS LIQUID POLYMERIZABLE COMPOUND WITH SAID DRY ACTIVATED CLAY CATALYST WHEREBY AN EXOTHERMIC REACTION OCCURS CAUSING POLYMERIZATION OF THE MONOMER BY THE CATALYST ONTO THE DISCRETE MINERAL PARTICLES, AND CONTINUING SAID ADMIXING TO CAUSE THE DISCRETE COATED PARTICLES TO BE IN SUBSTANTIALLY NON-FUSED CONDITION WITH SAID DRY ACTIVATED CLAY CATALYST REMAINING IN SAID POLYMERIZED COATINGS AS A FILLER.