Process for catalyst removal from polyphenylene ether reaction solutions
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United States of America Patent
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-
Dec 2, 1980
Grant Date -
N/A
app pub date -
Sep 8, 1975
filing date -
Sep 8, 1975
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved process is disclosed which is useful in separating the catalyst residue from a polyphenylene ether reaction solution. The process is based on the use of an extracting agent in a liquid-liquid extraction process wherein the aqueous extraction phase is maintained in a continuous phase while the organic phase is maintained as a discrete phase.
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