| 摘要 |
In a process for the preparation of an olefin oxide polymerization catalyst comprising: (i) admixing calcium, ammonia, an alkylene oxide modifier, and an organic nitrile modifier, the alkylene oxide consisting of carbon, hydrogen, and oxirane oxygen atoms and the organic nitrile consisting of carbon, nitrogen, and hydrogen atoms, at least one hydrogen atom being acidic, to form a slurry of modified calcium hexammine in ammonia; and (ii) evaporating ammonia to provide a solid residue, the improvement comprising: aging the solid residue at a temperature in the range of about 150 DEG C. to about 225 DEG C.
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