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

1976-11-30

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260583N, C08G 6544, C08G 6546

Patent

active

039948595

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 a water soluble bisulfate will extract a complex copper-amine catalyst from a reaction solution of a polyphenylene ether resin.

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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