Extraction of copper catalyst from polyphenylene oxide solutions

Details Extraction of copper catalyst from polyphenylene oxide solutions Extraction of copper catalyst from polyphenylene oxide solutions

1976-01-21

1977-05-31

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 6544

Patent

active

040268705

ABSTRACT:
A novel process is disclosed for the preparation of a polyphenylene oxide resin wherein the copper catalyst is extracted by the use of a salt of ethylenediaminetetraacetic acid and a quaternary ammonium salt. The process results in a decrease of the residual copper which is carried over into the polyphenylene oxide resin.

REFERENCES:
patent: 3365422 (1968-01-01), Van Dort
patent: 3544515 (1970-12-01), Katchman et al.
patent: 3838102 (1974-09-01), Bennett et al.
patent: 3951917 (1976-04-01), Floryan et al.

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