反应详情

温度

50 °C

Into a dried pressure vessel purged with nitrogen, 80 L of cyclohexane solvent and 0.34 L of sec-butyllithium initiator (10% by mass solution in cyclohexane) were charged. After raising the temperature to 50° C., 4.0 L of styrene was added to allow the polymerization to proceed for 3 h. Then, the polymerization was allowed to proceed for 4 h after adding a mixed liquid of 14.2 L of isoprene and 11.6 L of butadiene and further for 3 h after adding 4.0 L of styrene. The resultant reaction liquid was poured into 80 L of methanol, and the precipitated solid matter was separated by filtration and dried at 50° C. for 20 h, to obtain a polystyrene block-poly(isoprene/butadiene) block-polystyrene block, triblock copolymer.

1. customInto a dried pressure vessel purged with nitrogen, 80 L of cyclohexane solvent and 0.34 L of sec-butyllithium initiator (10% by mass solution in cyclohexane)
2. additionwere charged
3. addition4.0 L of styrene was added
4. customthe polymerization
5. waitto proceed for 4 h
6. customThe resultant reaction liquid
7. customthe precipitated solid matter was separated by filtration
8. customdried at 50° C. for 20 h