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    • 3. 发明申请
    • Method for Production of Polyether Alcohols
    • 制备聚醚醇的方法
    • US20080161509A1
    • 2008-07-03
    • US11997589
    • 2006-08-21
    • Thomas OstrowskiAchim LofflerRaimund Ruppel
    • Thomas OstrowskiAchim LofflerRaimund Ruppel
    • C08F2/01
    • C08G65/2663C08G65/2696
    • The invention provides a process for preparing polyether alcohols by adding alkylene oxides onto H-functional starter substances using DMC catalysts, which comprises, in a first step, adding propylene oxide or a mixture of propylene oxide and ethylene oxide onto H-functional starter substances and, in a second step, transferring the product thus formed into a tubular reactor in which mixtures of ethylene oxide and propylene oxide are metered in at least two metering points, the proportions of ethylene oxide and propylene oxide in the mixtures metered in in the first and in the second step being different, the proportions of ethylene oxide and propylene oxide in the mixtures metered in at least two metering points in the second step being different, and the mixture metered in in the second step, at least at the last metering point, comprising at least 40% by weight of ethylene oxide.
    • 本发明提供了一种通过使用DMC催化剂将烯化氧加成到H官能起始物质上制备聚醚醇的方法,该方法包括在第一步骤中将环氧丙烷或环氧丙烷与环氧乙烷的混合物加入到H官能起始物质中, 在第二步中,将由此形成的产物转移到管式反应器中,其中在至少两个计量点中计量环氧乙烷和环氧丙烷的混合物,在第一和第二步中计量的混合物中的环氧乙烷和环氧丙烷的比例 在第二步是不同的情况下,在第二步中至少两个计量点中计量的混合物中的环氧乙烷和环氧丙烷的比例是不同的,并且在第二步中计量的混合物至少在最后一个计量点, 包含至少40重量%的环氧乙烷。