Catalyst removal from polyphenylene ether reaction solutions by

Details Catalyst removal from polyphenylene ether reaction solutions by Catalyst removal from polyphenylene ether reaction solutions by

1975-04-01

1976-10-05

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260583N, C08G 6544

Patent

active

039843742

ABSTRACT:
A novel process for the separation of catalyst residues from polyphenylene ether reaction systems is disclosed. The process is based on the discovery that an aqueous solution of an ammonium salt will extract copper from a reaction solution of a polyphenylene ether resin and a complex copper-amine catalyst.

REFERENCES:
patent: 3630995 (1971-12-01), Modan
patent: 3783147 (1974-01-01), Calicchia et al.
patent: 3838102 (1974-09-01), Bennett et al.

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