Process for producing polyphenylene oxide

Details Process for producing polyphenylene oxide Process for producing polyphenylene oxide

1982-03-01

1983-05-24

Ziegler, A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525132, 528217, 528218, 528219, C08G 6538

Patent

active

043851681

ABSTRACT:
A process for producing polyphenylene oxide which comprises contacting a phenolic monomer with oxygen in the presence of a catalyst composed of a manganese (II) salt and an ortho-hydroxyazo compound represented by the following formula: ##STR1## wherein A and B represent identical or different arylene ring having a valency of at least 2 and having an oxy group and an azo group directly linked to the ortho carbon atoms of the arylene ring and R represents hydrogen or lower alkyl group, or in the presence of said catalyst and an amine, in a polymerization solvent containing a base and thereby subjecting said phenolic monomer to an oxidative polymerization.

REFERENCES:
patent: 3972851 (1976-08-01), Olander
patent: 4184034 (1980-01-01), Olander

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