Abstract 1. IN A PROCESS FOR TREATING MINERAL PIGMENT, TO PRODUCE A FREE FLOWING AND SUBSTANTIALLY DUSTLESS MINERAL PIGEMENT AGGREGATE WHICH IS READILY DISPERSIBLE IN A PAINT OR PLASTIC, THE IMPROVEMENT COMPRISING: FORMING A PUMPABLE SLURRY OF PRIMARY PIGMENT PARTICLES WITH WATER AND ABOUT 0.1 TO ABOUT 5.0%, BASED ON PIGMENT PARTICLE WEIGHT, OF A WATER-SOLUBLE OR WATER-DISPERSIBLE ORGANIC, COLLOIDAL HIGH MOLECULAR WEIGHT THICKENER CAPABLE IN SMALL CONCENTRATIONS OF LESS THAN ABOUT 5.0% OF VISIBLY CAUSING THICKENING WHEN ADDED TO WATER; ATOMIZING THE RESULTING SLURRY; SPRAY DRYING THE ATOMIZED SLURRY, SAID ATOMIZATION AND SPRAY DRYING FORMING A PLURALITY OF MINUTE, DISCRETE AGGREGATES OF PRIMARY PIGMENT PARTICLES BOUND TOGETHER; AND RECOVERING THE MINUTE, DISCRETE PIGMENT AGGREGATES FROM THE SPRAY DRYING OPERATION, SAID THICKENER BEING NORMALLY A SOLID AT ROOM TEMPERATURE, NON-DEGRADABLE AND NON-VOLATILE AT SPRAY DRYING TEMPERATURES AND CAPABLE ON HARDENING OF CREATING SUFFICIENTLY STRONG AGGREGATES BONDS TO WITHSTAND NORMAL HANDLING AND STORAGE WITHOUT DESTRUCTION, SAID BONDS, HOWEVER, BEING READILY DESTRUCTIBLE IN THE PAINT OR PLASTIC SYSTEM TO WHICH THE PIGMENT AGGREGATES ARE ADDED.
IN A PROCESS FOR TREATING MINERAL PIGMENT, TO PRODUCE A FREE FLOWING AND SUBSTANTIALLY DUSTLESS MINERAL PIGEMENT AGGREGATE WHICH IS READILY DISPERSIBLE IN A PAINT OR PLASTIC, THE IMPROVEMENT COMPRISING: FORMING A PUMPABLE SLURRY OF PRIMARY PIGMENT PARTICLES WITH WATER AND ABOUT 0.1 TO ABOUT 5.0%, BASED ON PIGMENT PARTICLE WEIGHT, OF A WATER-SOLUBLE OR WATER-DISPERSIBLE ORGANIC, COLLOIDAL HIGH MOLECULAR WEIGHT THICKENER CAPABLE IN SMALL CONCENTRATIONS OF LESS THAN ABOUT 5.0% OF VISIBLY CAUSING THICKENING WHEN ADDED TO WATER; ATOMIZING THE RESULTING SLURRY; SPRAY DRYING THE ATOMIZED SLURRY, SAID ATOMIZATION AND SPRAY DRYING FORMING A PLURALITY OF MINUTE, DISCRETE AGGREGATES OF PRIMARY PIGMENT PARTICLES BOUND TOGETHER; AND RECOVERING THE MINUTE, DISCRETE PIGMENT AGGREGATES FROM THE SPRAY DRYING OPERATION, SAID THICKENER BEING NORMALLY A SOLID AT ROOM TEMPERATURE, NON-DEGRADABLE AND NON-VOLATILE AT SPRAY DRYING TEMPERATURES AND CAPABLE ON HARDENING OF CREATING SUFFICIENTLY STRONG AGGREGATES BONDS TO WITHSTAND NORMAL HANDLING AND STORAGE WITHOUT DESTRUCTION, SAID BONDS, HOWEVER, BEING READILY DESTRUCTIBLE IN THE PAINT OR PLASTIC SYSTEM TO WHICH THE PIGMENT AGGREGATES ARE ADDED.
Claim 2
Dependent Claim
171 words
IN A PROCESS FOR TREATING MINERAL PIGMENT, TO PRODUCE A FREE FLOWING AND SUBSTANTIALLY DUSTLESS MINERAL PIGEMENT AGGREGATE WHICH IS READILY DISPERSIBLE IN A PAINT OR PLASTIC, THE IMPROVEMENT COMPRISING: FORMING A PUMPABLE SLURRY OF PRIMARY PIGMENT PARTICLES WITH WATER AND ABOUT 0.1 TO ABOUT 5.0%, BASED ON PIGMENT PARTICLE WEIGHT, OF A WATER-SOLUBLE OR WATER-DISPERSIBLE ORGANIC, COLLOIDAL HIGH MOLECULAR WEIGHT THICKENER CAPABLE IN SMALL CONCENTRATIONS OF LESS THAN ABOUT 5.0% OF VISIBLY CAUSING THICKENING WHEN ADDED TO WATER; ATOMIZING THE RESULTING SLURRY; SPRAY DRYING THE ATOMIZED SLURRY, SAID ATOMIZATION AND SPRAY DRYING FORMING A PLURALITY OF MINUTE, DISCRETE AGGREGATES OF PRIMARY PIGMENT PARTICLES BOUND TOGETHER; AND RECOVERING THE MINUTE, DISCRETE PIGMENT AGGREGATES FROM THE SPRAY DRYING OPERATION, SAID THICKENER BEING NORMALLY A SOLID AT ROOM TEMPERATURE, NON-DEGRADABLE AND NON-VOLATILE AT SPRAY DRYING TEMPERATURES AND CAPABLE ON HARDENING OF CREATING SUFFICIENTLY STRONG AGGREGATES BONDS TO WITHSTAND NORMAL HANDLING AND STORAGE WITHOUT DESTRUCTION, SAID BONDS, HOWEVER, BEING READILY DESTRUCTIBLE IN THE PAINT OR PLASTIC SYSTEM TO WHICH THE PIGMENT AGGREGATES ARE ADDED.