Method of manufacturing polyphenylene ethers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

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528212, 528214, 528215, C08G 6544

Patent

active

047344857

ABSTRACT:
The invention relates to the method of manufacturing polyphenylene ethers by an oxidative coupling reaction of monomeric phenols in a solvent mixture comprised of an aromatic hydrocarbon with 6-8 carbon atoms and an aliphatic alcohol with 1-4 carbon atoms in a volumetric ratio of the hydrocarbon to the alcohol of 92.5:7.5 to 50:50, in the presence of a catalyst comprised of cupric chloride, a secondary diamine, and morpholine.

REFERENCES:
patent: 4429106 (1984-01-01), Burzin et al.
patent: 4537948 (1985-08-01), Bartmann et al.

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