Flow diagram showing the HIPS process

Product type Medium and high impact polystyrene [Pg.79]

Reactor type Continuous stirred tank reactors and/or plug flow reactors [Pg.79]

Additives Polybutadiene, white oil, chain transfer agents, lubrication agents [Pg.79]

Purpose Raw materials storage PBu grinding for HIPS production Dissolve PBu in styrene Polymerisation of styrene Recovery of unreacted styrene and solvent Formation of polystyrene pellets Storage of bulk PS Packaging of PS pellets [Pg.80]

Inlet Raw material Up to 35 kg bales Raw materials + additives Process feed solution PS + unreacted species Final PS PS pellets PS pellets [Pg.80]

Big Chemical Encyclopedia