VERFAHREN ZUR HYDRIERUNG VON METHYLOLALKANALEN

    公开(公告)号:EP1993983A1

    公开(公告)日:2008-11-26

    申请号:EP07712307.3

    申请日:2007-02-23

    Applicant: BASF SE

    CPC classification number: C07C29/141 C07C31/20 C07C31/22 C07C31/245

    Abstract: A process for catalytically hydrogenating methylolalkanals of the general formula (I) in which R1 and R2 are each independently a further methylol group or an alkyl group having from 1 to 22 carbon atoms or an aryl or aralkyl group having from 6 to 33 carbon atoms, in the liquid phase over a hydrogenation catalyst, which comprises setting a pH of from 7.0 to 9.0 in the hydrogenation effluent by adding at least one tertiary amine, an inorganic base or an inorganic or organic acid to the hydrogenation feed.

    Abstract translation: 一种催化氢化通式(I)的羟甲基链烷醛的方法,其中R1和R2各自独立地为另一个羟甲基或具有1至22个碳原子的烷基或具有6至33个碳原子的芳基或芳烷基, 在氢化催化剂上的液相中进行,其包括通过将至少一种叔胺,无机碱或无机或有机酸加入到氢化进料中来将氢化流出物中的pH设定为7.0至9.0。

    VERFAHREN ZUR HERSTELLUNG VON HYDROXYPIVALINALDEHYD UND NEOPENTYLGLYKOL
    19.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON HYDROXYPIVALINALDEHYD UND NEOPENTYLGLYKOL 有权
    用于生产羟基新和新戊二醇

    公开(公告)号:EP2134669A1

    公开(公告)日:2009-12-23

    申请号:EP08709204.5

    申请日:2008-02-25

    Applicant: BASF SE

    CPC classification number: C07C45/75 C07C29/141 C07C45/82 C07C47/19 C07C31/20

    Abstract: The invention relates to hydroxy pivalin aldehyde, which is produced by the aldolization of isobutyraldehyde with formaldehyde and subsequent processing of the reaction product by distillation, wherein the reaction product is fed to a distillation column, which is operated at a top pressure ranging between 0.5 and 1.5 bar and in which a two-stage condensation process is provided in the top region. In this process, the vapors are first fed to a partial condenser operated at a temperature ranging between 50 and 80ºC, the condensate of which is returned at least partially to the distillation column, and the vapors that are not condensed in the partial condenser are fed to a downstream condenser operated at a temperature ranging between -40º and +30ºC, the condensate of which is discharged at least partially.

Patent Agency Ranking