Rubber composition for tire and pneumatic tire
A rubber composition and rubber technology are applied in the field of rubber compositions for tires and pneumatic tires, which can solve the problems of reduced performance, increased hardness, inability to improve wet grip performance, etc., and achieve improved elongation at break and improved wear resistance. Effect
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[0075]
[0076] Add 18L of n-hexane, 740g of styrene (manufactured by Kanto Chemical Co., Ltd.), 1260g of butadiene, and 10mmol of tetramethylethylenediamine into a 30L pressure vessel fully purged with nitrogen, and heat the temperature To 40°C. Next, 10 ml of butyl lithium was added thereto, then, the temperature was increased to 50°C, and the mixture was stirred for 3 hours. Next, 11 ml of the aforementioned terminal modifier was added to the mixture, and the mixture was stirred for 30 minutes. 15 ml of methanol and 0.1 g of 2,6-tert-butyl-p-cresol were added to the reaction solution. Subsequently, the reaction solution was poured into a stainless steel container containing 18 L of methanol, thereby collecting agglomerates. The obtained agglomerate was dried under reduced pressure for 24 hours to obtain a modified SBR.
[0077] In the following, various chemicals used in Examples and Comparative Examples will be collectively described. Terpene-based resins (1) to (3) are s...
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