| 摘要 |
The invention relates to a method for the continuous production of polyether alcohols by the attachment of alkylene oxides to H-functional starter substances using a DMC catalyst. Said method comprises the following steps: a) production of an intermediate product by the continuous metering of an H-functional starter substance, an alkylene oxide or a mixture of at least two alkylene oxides and the required quantity of a DMC catalyst in a continuous reactor; b) continuous withdrawal of the intermediate product of step a) from the reactor; c) continuous metering of the product obtained in step a), of an alkylene oxide that differs from the product in step a), or a mixture of at least two alkylene oxides that differs from the mixture in step a) and optionally the required quantity of a DMC catalyst in an additional continuous reactor. ® KIPO & WIPO 2007
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