Styrene → Benzene, ethenyl-, polymer with 1,3-butadiene

Participants

Reaction Steps

In a first stage a butadiene-styrene copolymer is prepared by injecting 167 g of styrene, 476 g of butadiene and 2000 ppm of THF into a 10-liter reactor containing 6.4 liters of deaerated heptane. The impurities are neutralized with the aid of n-BuLi and then 0.0038 mol of n-BuLi are added, together with 0.0011 mol of sodium tert-butylate, employed as randomizing agent; the polymerization is conducted at 55° C.

Provenance & Evidence