Catalyst removal from polyphenylene oxides by ammonia and...

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

C - Chemistry, Metallurgy

08

G

402/359

C08G 65/44 (2006.01) C08G 65/46 (2006.01)

Patent

CA 1079441

ABSTRACT OF THE DISCLOSURE The 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.

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