Process for the production of polyphenylene oxides

Details Process for the production of polyphenylene oxides Process for the production of polyphenylene oxides

1984-02-23

1985-08-27

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528212, 528214, 528216, 528218, C08G 6544

Patent

active

045379483

ABSTRACT:
A process for the production of polyphenylene oxides by the oxidative coupling of a diorthosubstituted phenol of the formula: ##STR1## wherein R and R' are an n-alkyl radical with 1 to about 6 carbon atoms or a phenyl radical in the presence of an oxidizing gas and an activated copper(II)-amine catalyst made of copper(II) salts, secondary aliphatic or cyclic amines having about 4 to 10 carbon atoms, and hydrobromides of the same or different secondary aliphatic or cyclic amines having about 4 to 10 carbon atoms, in a solvent mixture of a C.sub.6 -C.sub.8 aromatic hydrocarbon and a C.sub.1 -C.sub.4 aliphatic alcohol.

REFERENCES:
patent: 3642699 (1972-02-01), Cooper et al.
patent: 4028341 (1977-06-01), Hay
patent: 4059568 (1977-11-01), Cooper
patent: 4092294 (1978-05-01), Bennett, Jr. et al.
patent: 4196278 (1980-04-01), Bennett, Jr. et al.
patent: 4429106 (1984-01-01), Burzin et al.
patent: 4440923 (1984-04-01), Bartmann et al.
Polymerization Processes, vol. 29 (1977), "Polymerizations by Oxidative Coupling", Finkbeiner et al., pp. 540-581.

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