Continuous process including recycle stream treatment for the production of high impact polystyrene
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United States of America Patent
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Aug 15, 1989
Grant Date -
N/A
app pub date -
Dec 24, 1987
filing date -
Dec 24, 1987
priority date (Note) -
Expired
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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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