A method for producing a rubber wet master batch, a rubber wet master batch and a rubber composition containing a rubber wet master batch

摘要

A method for producing a rubber wet masterbatch obtained by using at least a filler, a dispersion solvent and a rubber latex solution as raw materials, comprising a solidifying step of mixing a slurry solution containing the filler and the dispersion solvent with the rubber latex solution and solidifying the resultant Mixture to produce a filled solidified rubber product; a dehydration step of using a first uniaxial extruder to dehydrate the filled solidified rubber product while heating the solidified product to a range of 100 to 180 ° C so that a wet rubber masterbatch is produced; and A drying softening step of using a second uniaxial extruder in which mechanical energy of 70 Wh / kg or less is applied to the wet rubber masterbatch to produce the softening wet rubber masterbatch while the masterbatch is heated to a range of 120 to 180 ° C so that the wet rubber masterbatch is produced with a further reduced percentage of water content, the method having no cooling step between the dehydration step and the drying softening step.