| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved batch or semibatch method for polyaddition of an alkylene oxide to a starting compound especially to a low molecular weight starting compound. SOLUTION: The activated starting mixture comprises (a) at least one preactivated starting compound containing (i) at least one first starting compound having≥70 chemical equivalent, (ii) at least one epoxide and (iii) at least one DMC (double metal cyanide) catalyst and (b)≥2 mol% at least one second starting compound having a chemical equivalent less than that of the first starting compound. COPYRIGHT: (C)2004,JPO
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