METHOD FOR PRODUCING RUBBER WET MASTERBATCH, RUBBER WET MASTERBATCH, AND RUBBER COMPOSITION INCLUDING RUBBER WET MASTERBATCH

摘要

A METHOD FOR PRODUCING A RUBBER WET MASTERBATCH INCLUDES A SOLIDIFYING STEP OF MIXING A SLURRY SOLUTION CONTAINING A FILLER AND A DISPERSING SOLVENT WITH A RUBBER LATEX SOLUTION, AND SOLIDIFYING THE RESULTANT MIXTURE TO PRODUCE A FILLER-CONTAINING RUBBER SOLIDIFIED PRODUCT, A DEHYDRATING STEP OF USING A FIRST UNIAXIAL EXTRUDER TO DEHYDRATE THE FILLER-CONTAINING RUBBER SOLIDIFIED PRODUCT WHILE THE SOLIDIFIED PRODUCT IS HEATED INTO THE RANGE OF 100 TO 180°C, THEREBY PRODUCING A RUBBER WET MASTERBATCH, AND A DRYING PLASTICIZING STEP OF USING A SECOND UNIAXIAL EXTRUDER TO PLASTICIZE THE RUBBER WET MASTERBATCH WHILE THE MASTERBATCH IS HEATED INTO THE RANGE OF 120 TO 180°C, THEREBY PRODUCING THE RUBBER WET MASTERBATCH FURTHER DECREASED IN WATER CONTENT BY PERCENTAGE. THE METHOD DOES NOT HAVE COOLING STEP BETWEEN THE DEHYDRATING STEP AND THE DRYING PLASTICIZING STEP.