Catalyst removal from polyphenylene oxides by ammonia and carbon

Details Catalyst removal from polyphenylene oxides by ammonia and carbon Catalyst removal from polyphenylene oxides by ammonia and carbon

1975-05-12

1976-10-26

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 6544

Patent

active

039882985

ABSTRACT:
This invention provides a novel method for the removal of the catalyst from a polyphenylene oxide polymerization mixture. The novel method is based on the discovery that ammonia and carbon dioxide may be employed to extract the catalyst from a polyphenylene ether reaction mixture.

REFERENCES:
patent: 3220979 (1965-11-01), McNelis
patent: 3630995 (1971-12-01), Modan
patent: 3733301 (1973-05-01), Modan
patent: 3783147 (1974-01-01), Calicchia

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