Process for preparing polyphenylene oxides

Details Process for preparing polyphenylene oxides Process for preparing polyphenylene oxides

1983-06-06

1984-10-16

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

526 65, 528212, 528214, 528216, 528217, C08G 6544

Patent

active

044776519

ABSTRACT:
A novel process is disclosed for the preparation of polyphenylene ethers by an oxidative coupling reaction. The process comprises oxidatively coupling a phenolic compound in the presence of a catalyst which comprises a copper complex of a copper compound with an N,N-disubstituted alkylene or cycloalkylene diamine having from 2 to 3 carbon atoms between the nitrogen atoms and whose substituents on the two nitrogen atoms are isopropyl or alpha tertiary alkyl, a tertiary amine, a bromine-containing compound and dimethyl amine. Unexpected short reaction times are obtained and the high molecular weight product increases in molecular weight and shows a marked decrease in bound nitrogen after moulding.

REFERENCES:
patent: 4092294 (1978-05-01), Bennett, Jr. et al.

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