| abstract |
Conjugated diolefins, optionally in combination with other unsaturated compounds which can be copolymerized with the diolefins, are polymerized by polymerizing the diolefins in the presence of catalysts based on monocyclopentadienyl compounds of vanadium and alumoxanes in the presence of aromatic vinyl compounds at temperatures from -30 ° C to +80 ° C. DOLLAR A With the aid of the method according to the invention, it is possible in a simple manner to prepare solutions of polydiolefins, such as polybutadiene, with contents of 1,2 units of 10 to 30% in aromatic vinyl compounds, which then B. can be processed into ABS or HIPS. |