Verfahren zur Herstellung von schlagzäh modifizierten Polystyrol-Formmassen

摘要

The invention pertains to a process for producing impact-resistant modified polystyrene molding compounds by continuous anionic polymerization of styrene monomers in the presence of a rubber in a single reaction zone, wherein a styrene solution containing as rubber a styrene-butadiene block rubber or a mixture of a styrene-butadiene block rubber with a polybutadiene rubber, the styrene content of which, relative to the rubber or rubber mixture, is between 10 and 90 wt %, is fed to a reaction mixture, the polymer content of which is above the phase inversion point. The invention also pertains to a molding compound produced by this process and its use in manufacturing sheets and moldings.