Process for catalyst removal from polyphenylene ether reaction s

Details Process for catalyst removal from polyphenylene ether reaction s Process for catalyst removal from polyphenylene ether reaction s

1975-09-08

1980-12-02

Lee, Lester L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528212, 528486, 528487, 528490, 528499, 528502, C08G 6546

Patent

active

042372658

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.

REFERENCES:
patent: 3630995 (1971-12-01), Modan
patent: 3733301 (1973-05-01), Modan
patent: 3783147 (1974-01-01), Calicchia et al.
patent: 3923738 (1975-12-01), Van Sorge

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