Method of producing high-molecular weight polyphenylene oxides

Details Method of producing high-molecular weight polyphenylene oxides Method of producing high-molecular weight polyphenylene oxides

1983-05-23

1984-04-03

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, 528215, 528217, C08G 6544

Patent

active

044409230

ABSTRACT:
A method for producing high molecular-weight polyphenylene oxides which comprises the oxidative coupling of a diortho-substituted phenol in the presence of a copper-amine complex, and an activator of a polyvalent alcohol, an alkali or alkaline earth hydroxide, and, if necessary, the hydrobromide of a secondary amine.

REFERENCES:
patent: 3228910 (1966-01-01), Stamatoff
patent: 3384619 (1968-05-01), Hori et al.
patent: 3573257 (1971-03-01), Nakashio et al.
patent: 3733299 (1973-05-01), Cooper et al.
patent: 3787361 (1974-01-01), Nakashio et al.
patent: 4085124 (1978-04-01), Rutledge
patent: 4385167 (1983-05-01), Floryan

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