1,3-Butadiene → 1,3-Butadiene

Participants

Reaction Steps

Butadiene was polymerized in a cyclohexane solvent with a polymerization catalyst of lithium n-butyl. Then, tetrahydrofuran was added as a vinylization agent, to polymerize butadiene, to obtain a butadiene-vinyl butadiene copolymer. The copolymer had a degree of vinylization of vinyl butadiene part of 60%. The polymer was hydrogenated to give a hydrogenatedblock copolymer having a hydrogenation ratio of 98%. This polymer was namedR-5.

Provenance & Evidence