Process for continuous production of high impact polystyrene

Details Process for continuous production of high impact polystyrene Process for continuous production of high impact polystyrene

1982-04-07

1983-12-06

Ziegler, J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525289, 525292, 525302, 525306, 525313, 525314, C08F27900, C08F27902

Patent

active

044194889

ABSTRACT:
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.

REFERENCES:
patent: 3945976 (1976-03-01), McCurdy et al.

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