Patent ID: 9670332
Date: 2017-06-06
CPC Classifications: C08J,C08K,C08L

Claim:
1. A process for preparing a rubber composition based on at least one diene elastomer, a filler comprising at least carbon black and an inorganic filler with an inorganic filler content of less than or equal to 50 parts by weight per hundred parts of elastomer, and also a crosslinking system, comprising: preparing a first masterbatch of diene elastomer and of carbon black, comprising: feeding a continuous flow of a diene elastomer latex to a mixing zone of a coagulation reactor defining an elongate coagulation zone extending between the mixing zone and an outlet, feeding a continuous flow of a fluid comprising a filler comprising carbon black under pressure to the mixing zone of a coagulation reactor to form a coagulated mixture, drying the coagulum obtained above in order to recover the first masterbatch, incorporating the inorganic filler, and the other constituents of the composition, with the exception of a crosslinking system, into the first masterbatch obtained above, in a mixer by thermomechanically kneading everything until a maximum temperature of between 130° C. and 200° C. is reached, cooling the combined mixture to a temperature below 100° C., subsequently incorporating: a crosslinking system, kneading everything up to a maximum temperature below 120° C.