Continuous process including recycle stream treatment for the pr

Details Continuous process including recycle stream treatment for the pr Continuous process including recycle stream treatment for the pr

1987-12-24

1989-08-15

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525 54, 526 67, 526 68, 526 65, C08L 5104, C08F 200

Patent

active

048575879

ABSTRACT:
A continuous flow process for the production of high impact polystyrene, wherein specific types of polymerization inhibiting impurities are removed from a recycle stream prior to feeding or introducing the recycle stream into a styrene polymerization zone. Preferably, the process further comprises the step of monitoring the acidity of the recycle stream.

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patent: 4451612 (1984-05-01), Wang et al.
patent: 4567232 (1986-01-01), Echte et al.

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