| 摘要 |
The preparation of polyphenylene oxides by oxidative coupling of monohydroxy aromatic compounds in the presence of a copper-halide-amine catalyst is improved by initially preparing a homogeneous mixture by blending said monohydroxy aromatic compound and the catalyst reagents in the absence of oxygen, and subsequently contacting said mixture with oxygen to produce said polyphenylene oxide. The pre-mixing step enables the preparation of a catalyst of high activity and long life. The improved process is particularly useful for the continuous preparation of polyphenylene oxides.
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