A bifunctional anionic initiator soluble in non‐polar solvents

Abstract

Abstract Addition of two molecules of sec ‐butyllithium to one molecule of m ‐diisopropenylbenzene produces a bifunctional initiator which is soluble in non‐polar solvents. This initiator is quite efficient for the polymerization of isoprene and butadiene and allows the preparation of samples of particular interest: bifunctional polydienes with high 1,4‐ cis and 1,4 contents, respectively, and by using a cross‐linking agent elastomeric gels even after removal of the solvent.