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    • 7. 发明申请
    • Preparation of polyether alcohols
    • 聚醚醇的制备
    • US20050107643A1
    • 2005-05-19
    • US10712707
    • 2003-11-13
    • Thomas OstrowskiRaimund RuppelEva BaumKathrin Harre
    • Thomas OstrowskiRaimund RuppelEva BaumKathrin Harre
    • C07C43/11C08G65/00C08G65/10C08G65/12C08G65/26
    • C08G65/2663C08G18/4866C08G65/2696
    • The invention relates to a process for the continuous preparation of polyether alcohols by reaction of alkylene oxides with H-functional starter substances in the presence of DMC catalysts, which comprises, at the beginning of the process a) firstly placing initial charge material and DMC catalyst in a reactor, b) metering in alkylene oxide so that the metering rate which is maintained for continuous operation of the reactor is reached in a time of from 100 to 3 000 seconds, c) metering in starter substance during or after step b) so that the metering rate which is maintained for continuous operation of the reactor is reached in a time of from 5 to 500 seconds, d) after the fill level in the reactor which is desired for continuous operation of the reactor has been reached, taking product off continuously from the reactor while at the same time metering in starter substance and alkylene oxides in such an amount that the fill level in the reactor remains constant and metering in DMC catalyst so that the catalyst concentration necessary for continuous operation of the reactor is maintained in the reactor.
    • 本发明涉及一种通过在DMC催化剂存在下使烯化氧与H官能起始物质反应来连续制备聚醚醇的方法,该方法在方法开始时包括:a)首先将初始的电荷材料和DMC催化剂 在反应器中,b)在环氧烷中计量,使得在100至3000秒的时间内达到维持反应器连续操作的计量速率,c)在步骤b)或之后计量起始物质 在5至500秒的时间内达到维持反应器连续运行的计量速率,d)在达到反应器连续运行所需反应器的填充量后,将产品关闭 连续地从反应器中同时在起始物质和环氧烷中计量,使得反应器中的填充水平保持恒定并且在DMC cata中计量 使得在反应器中保持连续操作反应器所需的催化剂浓度。