Acetylene-conjugated diene polymerization

摘要

A process for preparing copolymers of acetylene and conjugated diene compounds by copolymerization of acetylene with at least one conjugated diene compound in the presence of a catalyst composition in a reactor, characterized in that the catalyst composition comprises a dialkyl aluminum halide, an organic nickel compound and an active hydrogen compound, of which the molar concentrations have the following relationships: [Al]=2[Ni]+[H] [Al]/[Ni]>4 wherein [Al], [Ni] and [H] represent respectively the molar concentrations of the dialkyl aluminum halide, of the organic nickel compound and of the active hydrogen compound, whereby the copolymer was obtained in a good yield without by-production of any gel material.