Process for preparing an N,N-dialky-ethanolamine having high color stability
    3.
    发明授权
    Process for preparing an N,N-dialky-ethanolamine having high color stability 有权
    制备具有高颜色稳定性的N,N-二乙醇胺的方法

    公开(公告)号:US08791302B2

    公开(公告)日:2014-07-29

    申请号:US13328230

    申请日:2011-12-16

    IPC分类号: C07C213/00

    CPC分类号: C07C213/04 C07C215/08

    摘要: A process for preparing an N,N-dialkylethanolamine of the formula I having high color stability where R1 and R2 are each independently a C1- to C8-alkyl group, by reacting ethylene oxide (EO) with a corresponding dialkylamine (R1R2NH) in the presence of water, wherein the reaction is effected continuously in a reactor, the reaction temperature is in the range from 90 to 180° C. and the residence time (RT) in the reactor is in the range from 1 to 7 min, the reactor output is treated thermally at a temperature in the range from 80 to 160° C. over a period in the range from 20 to 1000 min, and then the N,N-dialkylethanolamine is removed by distillation.

    摘要翻译: 制备具有高颜色稳定性的式I的N,N-二烷基乙醇胺的方法,其中R 1和R 2各自独立地为C 1〜C 8烷基,通过使环氧乙烷(EO)与相应的二烷基胺(R 1 R 2 NH) 存在水,其中反应在反应器中连续进行,反应温度为90-180℃,反应器中的停留时间(RT)为1-7分钟,反应器 在80〜160℃的温度范围内,在20〜1000分钟的时间内对产物进行热处理,然后通过蒸馏除去N,N-二烷基乙醇胺。

    PROCESS FOR PREPARING AN N,N-DIALKY-ETHANOLAMINE HAVING HIGH COLOR STABILITY
    4.
    发明申请
    PROCESS FOR PREPARING AN N,N-DIALKY-ETHANOLAMINE HAVING HIGH COLOR STABILITY 有权
    制备具有高颜色稳定性的N,N-二乙醇胺的方法

    公开(公告)号:US20120157715A1

    公开(公告)日:2012-06-21

    申请号:US13328230

    申请日:2011-12-16

    IPC分类号: C07C209/00

    CPC分类号: C07C213/04 C07C215/08

    摘要: A process for preparing an N,N-dialkylethanolamine of the formula I having high color stability where R1 and R2 are each independently a C1- to C8-alkyl group, by reacting ethylene oxide (EO) with a corresponding dialkylamine (R1R2NH) in the presence of water, wherein the reaction is effected continuously in a reactor, the reaction temperature is in the range from 90 to 180° C. and the residence time (RT) in the reactor is in the range from 1 to 7 min, the reactor output is treated thermally at a temperature in the range from 80 to 160° C. over a period in the range from 20 to 1000 min, and then the N,N-dialkylethanolamine is removed by distillation.

    摘要翻译: 制备具有高颜色稳定性的式I的N,N-二烷基乙醇胺的方法,其中R 1和R 2各自独立地为C 1〜C 8烷基,通过使环氧乙烷(EO)与相应的二烷基胺(R 1 R 2 NH) 存在水,其中反应在反应器中连续进行,反应温度为90-180℃,反应器中的停留时间(RT)为1-7分钟,反应器 在80〜160℃的温度范围内,在20〜1000分钟的时间内对产物进行热处理,然后通过蒸馏除去N,N-二烷基乙醇胺。