Procedures for the production of a mixture of vulcanizable rubber with silica-based reinforcing filler for the production of a tread for vehicle tires to control the behavior of the tread and tire tires

摘要

In a process for producing a vulcanizable rubber composition containing silica and having a low content of carbon black, at least a silica-based reinforcing filler and ad least a silane-based coupling agent are added to and intimately mixed with other ingredients of the composition in subsequent steps, at a temperature of from 165 DEG and 180 DEG C and between 110 DEG and 160 DEG C respectively. The rubber composition so obtained has an improved silica dispersion, constant physico-mechanical characteristics and a better drawability and is particularly suitable for the manufacture of treads for tyres with low rolling resistance. IMAGE