NEODYMIUM POLYMERIZATION CATALYST

摘要

This invention concerns the production of 1,4-cis polybutadiene or copolymers of butadiene with other related diolefins through the catalytic polymerization or copolymerization of butadiene monomer by a continuous or discontinuous process carried out in the absence or substantial absence of solvents or diluents, operating in two successive phases (the first at a T<30 DEG C. and the second at a T=or>30 DEG C.) by control of the molecular weights.