Preparation of plurality of pigment dispersion streams and use of same in polymer masterbatching

Claim 1

IN THE PRODUCTION OF A CARBON BLACK-POLYMER MASTERBATCH WHEREIN EACH OF A PLURALITY OF BLACK SLURRIES IS INDIVIDUALLY MIXED WITH EACH OF A PLURALITY OF SOLUTIONS OF CIS-POLYBUTADIENE AND TOLUENE, THE IMPROVEMENT COMPRISING DISPERSING THE BLACK IN SUPERHEATED STEAM, THE TOTAL AMOUNT OF BLACK SO DISPERSED BEING EQUAL TO THE AMOUNT REQUIRED FOR THE PLURALITY OF CIS-POLYBUTADIENE SOLUTIONS, DIVIDING THE BLACK LADEN STEAM STREAM INTO A NUMBER OF SECONDARY STREAMS CORRESPONDING TO THE NUMBER OF SAID PLURALITY OF CIS-POLYBUTADIENE SOLUTIONS, PASSING EACH OF SAID SECONDARY STREAMS TO A SEPARATE LIQUID EDUCTOR, SUPPLYING WATER TO EACH SAID LIQUID EDUCTOR, CONTROLLING THE AMOUNT OF WATER FED TO EACH SAID LIQUID EDUCTOR IN PROPORTION TO THE AMOUNT OF CARBON BLACK DESIRED FOR EACH OF SAID CIS-POLYBUTADIENE SOLUTIONS, MIXING EACH OF THE RESULTING BLACK SLURRIES WITH A CIS-POLYBUTADIENE SOLUTION, AND RECOVERING A BLACK-CIS-POLYBUTADIENE MASTERBATCH FROM EACH MIXTURE OF BLACK SLURRY AND CIS-POLYBUTADIENE SOLUTION.