ELASTOMER MIXTURE MAINLY CONTAINING DIENE ELASTOMER COUPLED WITH AMINOALKOXYSILANE GROUP, RUBBER COMPOSITION CONTAINING THE MIXTURE AND METHOD FOR OBTAINING THE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition which has improved hysteresis and mechanical properties in a vulcanized state and further has improved processability in an unvulcanized state.SOLUTION: There is provided an elastomer mixture obtained by modification of a diene elastomer with a coupling agent which introduces an alkoxysilane group carrying a tertiary or secondary amine functional group into a diene elastomer chain, where the mixture mainly contains a diene elastomer coupled with the alkoxysilane group which carries a tertiary or secondary amine functional group and bonds to a diene elastomer via a silicon atom. Further, in particular, there are provided: a reinforcing rubber composition which comprises a reinforcing filler and an elastomer matrix containing at least the mixture and can be used for the production of a tire; and a method for producing the same.