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    • 10. 发明授权
    • Obtaining an aliphatic dialdehyde Monoacetal
    • 获得脂族二醛单缩醛
    • US07498451B2
    • 2009-03-03
    • US10536900
    • 2003-11-27
    • Gerd HaderleinHans-Georg GöbbelWolfgang Siegel
    • Gerd HaderleinHans-Georg GöbbelWolfgang Siegel
    • C07D317/26C07C45/64
    • C07D317/26B01D1/22B01D3/141B01D3/148B01D3/322C07C45/60C07C45/71C07C45/82C07C47/198
    • The invention relates to a process for obtaining a pure aliphatic dialdehyde monoacetal by reaction of the corresponding aliphatic dialdehyde or a precursor of the corresponding aliphatic dialdehyde with one or more aliphatic mono- or polyhydric alcohols while distillatively removing water to obtain a reaction mixture which is separated distillatively, which comprises carrying out the distillative separation continuously in a dividing wall column to obtain pure aliphatic dialdehyde monoacetal as a sidestream from the dividing wall column, or in two distillation columns to obtain crude aliphatic dialdehyde monoacetal as a sidestream in the first distillation column, feed the crude aliphatic dialdehyde monoacetal to the second distillation column and obtain pure aliphatic dialdehyde monoacetal as the sidestream from the second distillation column.
    • 本发明涉及通过相应的脂族二醛或相应的脂族二醛的前体与一种或多种脂肪族一元醇或多元醇反应而获得纯的脂族二醛单缩醛的方法,同时蒸馏除去水,得到分离的反应混合物 蒸馏,其包括在分隔壁塔中连续进行蒸馏分离以获得作为来自分隔壁塔的侧流的纯脂族二醛单缩醛,或在两个蒸馏塔中,以在第一蒸馏塔中获得作为侧流的粗脂族二醛单缩醛, 将粗脂族二醛单缩醛进料至第二蒸馏塔,得到作为来自第二蒸馏塔的侧流的纯脂族二醛单缩醛。