Anionic polymerisation of vinyl-aromatic monomers, e.g. for production of high-impact polystyrene, involves polymerisation in a reactor cascade in presence of anionic initiator and organo-aluminum compound

摘要

Organoaluminum compounds (II) are used in addition to anionic initiators (I) (with a mol ratio of (II)/(I) = 0.001-0.95) in a method for the anionic polymerisation of vinyl-aromatic monomers (VAM) in a continuous reactor cascade comprising: (A) back-mixing reactor(s); and (B) non-back-mixing reactor(s).