CARBON BLACK FILLED RUBBER COMPOSITIONS

摘要

A carbon-containing rubber composition containing a rubber composition containing carbon black, obtained by coagulating, dehydrating, and drying a rubber latex mixture containing a latex of at least one starting rubber A having an average glass transition temperature TgA of -120 DEG C to -15 DEG C, carbon black, and part of a softening agent, mixed in an internal mixer with a starting rubber B and part of the softening agent, with a ratio FA/FB of the concentration FA of carbon black in the copolymer in the rubber latex mixture with the concentration FB of carbon black in the copolymer after kneading by the hermetic mixture being 1.2 to 3.0 and a rubber composition containing carbon black comprising a starting rubber A @ comprising a polymer having functional groups represented by formula (I) &rdurule& C = N<+> &ldurule& bonded with a polymer chain directly or through another atomic group or a terminal modified diene-based polymer first brought into contact with carbon black, then blended with a starting rubber B @ comprising a diene based stock rubber.