Anionic spray polymerization of styrene

Abstract

The invention relates to a process for continuously preparing styrene polymers by anionic spray polymerization, which comprises i) styrene and the initiator solution being mixed in a dynamic or static mixer and then the mixture being sprayed, ii) the resultant droplets passing from the liquid monomer state to the melted polymer state during their free fall in the spraying tower, iii) the melt droplets being collected as a melt at the foot of the tower, the melt having a monomer content of below 1%, preferably below 0.1% (<1000 ppm), and being discharged by suitable means.

Dependencies are inferred from the claim text.