VERFAHREN ZUR HERSTELLUNG VON DIALKYLCARBONATEN
    1.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON DIALKYLCARBONATEN 有权
    用于生产二烷基

    公开(公告)号:EP1419133B1

    公开(公告)日:2006-12-20

    申请号:EP02796225.7

    申请日:2002-08-13

    IPC分类号: C07C68/06 C07C68/08 C07C69/96

    CPC分类号: C07C68/06 C07C68/08 C07C69/96

    摘要: A method for the production of dialkyl carbonates of formula (I), in which R?1 and R2¿ independently = linear or branched hydrocarbon groups with 6 to 22 carbon atoms and 0 or 1 to 3 double bonds, by transesterification of C¿1?-C4 dialkyl carbonates with C6-C22 alcohols, in which (a) the crude transesterified mixture undergoes a first rectification in which the low-boiling impurities are distilled off, (b) the bottom product obtained thus undergoes a second rectification to separate off the high-boiling impurities and (c) the mid-boiling impurities are removed from the distillate obtained as above in a deodorising column, using steam or inert gases.