Process for continuous production of high impact polystyrene

摘要

High impact polystyrene having excellent properties is produced by a continuous process comprising feeding rubber and styrene continuously to a multistage horizontal dissolving tank to dissolve the rubber completely with stirring by increasing the temperature of each stage stepwise along the liquid flow direction, feeding the rubber solution to a first polymerizer to effect phase inversion of the rubber and preliminary polymerization of styrene; feeding the pre-polymerized solution to one or more horizontal type polymerizers to undergo bulk polymerization while removing the heat generated therein; and feeding the polymerized solution to a monomer separator to remove the remaining monomer.