Process of dispersing solids in caprolactam

Claim 1

A PROCESS OF DISPERSING ABOUT 5%-95% BY WEIGHT OF FINELY DIVIDED SOLID OF THE GROUP CONSISTING OF DELUSTERANTS AND PIGMENTS IN EPSILON-CAPROLACTAM WHICH PROCESS COMPRISES SUBJECTING A MIXTURE OF EPSILON-CAPROLACTAM AND ABOUT 5%-95% BY WEIGHT OF FINELY DIVIDED SOLID TO SHEARING FORCES AT CONCENTRATIONS OF THE SOLID AND AT TEMPERTURES SUCH THAT THE MIXTURE FLOWS AS A VISCOUS LIQUID OF DOUGHY CONSISTENCY, SUFFICIENTLY FLUID THAT IS DOES NOT BALL UP WHILE BEING SUBJECTED TO SAID SHEARING FORDES AND THICK ENOUGH TO BE PULLED OUT UNDER SAID SHEARING FORCES BY VISCOUS FLOW RATHER THAN BEING STIRRED, SAID MIXTURE BEING APPRECIABLY MORE VISCOUS THAN CAPROLACTAN PER SE AT THE SAME TEMPERATURE AND THEREAFTER INCREASING THE TEMPERATURE TO A MAXIMUM LIMIT OF ABOUT 125*C AND AT LEAST TO A POINT AT WHICH THE VISCOSITY OF THE MIXTURE IS APPRECIABLY REDUCED; AND CONTINUING SAID APPLICATION OF SHEARING FORCES PRODUCING SAID PULLING OUT AND VISCOUS FLOW, INTERPSERSED WITH PERIODS OF INCREASING THE TEMPERATURE TO A POINT OF APPRECIABLY REDUCED VISCOSITY AS AFORESAID, AT LEAST UNTIL A DISPERSION RESULTS CONTAINING SUBSTANTIALLY NO PARTICLE AGGLOMERATES EXCEEDING IN DIAMETER THE MAXIMUM DIAMETER OF THE INDIVIDUAL PARTICLES OF THE FINELY DIVIDED SOLID.