Process, complex and catalyst for preparation of polyphenylene o

Details Process, complex and catalyst for preparation of polyphenylene o Process, complex and catalyst for preparation of polyphenylene o

1983-05-16

1984-11-13

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528212, 528216, C08G 6544

Patent

active

044826974

ABSTRACT:
Polyphenylene oxides are prepared by the oxidative coupling of monohydroxy aromatic compounds such as 2,6-xylenol in the presence of copper-halide-amine catalysts in which at least part of the amine component is an aromatic diamine such as N,N'-diphenylethylenediamine, N,N'-diphenyl-N,N'-dimethylethylenediamine, N,N'-diphenylpiperazine or N,N,N',N'-tetramethyl-o-phenylenediamine. Other amines preferably present in the catalyst are a tertiary monoamine such as dimethyl-n-butylamine and a secondary monoamine such as di-n-butylamine. These diamines are characterized by a low rate of consumption during polymerization, and the catalysts prepared therefrom are hydrolytically stable.

REFERENCES:
patent: 3306874 (1967-02-01), Hay
patent: 3306875 (1967-02-01), Hay
patent: 3661848 (1972-05-01), Cooper et al.
patent: 3733299 (1973-05-01), Cooper et al.
patent: 3914266 (1975-10-01), Hay
patent: 4028341 (1977-06-01), Hay

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