| 摘要 |
An improved method of preparing high molecular weight polyphenoxy ethers from alkyl phenols is disclosed. The method involves contacting a solution of an alkyl phenol in the presence of an alkaline material and an oxygen carrying gas with a catalyst comprising activated or precipitated alumina supporting mixed oxides of manganese, chromium, and copper in which the metals are present in an amount of 5 to 25 percent chromium, 3 to 15 percent copper based on the total weight of the catalyst and in which the weight ratio range of manganese to chromium is 1.9-0.9 to 1. The method may optionally include the use of an amine.
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