Process for the preparation of polybutadiene grafted with styrene and acrylonitrile and having a very low end content of unreacted residual monomers.

摘要

During the reaction of grafting of styrene and acrylonitrile to polybutadiene, the conversion of the graft monomers is increased from the values of 92 : 94% usually obtained, to values very close to 98%, by carrying out a redox-type reaction additional to that provided by the process, in the presence of an additional aliquot of acrylonitrile and of catalytic system.