Example 1
A nitrogen-purged autoclave reactor was charged with cyclohexane, tetrahydrofuran, styrene, and 1,3-butadiene. The temperature of the contents of the reactor was adjusted to 20° C., and then n-butyllithium was added to initiate polymerization. The polymerization was carried out under adiabatic conditions, and the maximum temperature reached 85° C. Once the polymerization conversion ratio reached 99%, 1,3-butadiene was further added, followed by polymerization for five minutes. Subsequently, N,N-bis(trimethylsilyl)-3-aminopropyltriethoxysilane was added as a modifier, and a reaction was performed. After completion of the polymerization reaction, 2,6-di-tert-butyl-p-cresol was added. Thereafter, the solvent was removed by steam stripping. The product was dried on hot rolls adjusted at 110° C. to obtain SBR 1.
