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    METHOD FOR PRODUCING METHYLENE DIPHENYL DIAMINE (MDA) VIA THE AMINAL STAGE
    1.
    发明申请
    METHOD FOR PRODUCING METHYLENE DIPHENYL DIAMINE (MDA) VIA THE AMINAL STAGE 审中-公开
    过程有关氨醛PRODUCING亚甲基二苯基（MDA）

    公开(公告)号：WO2010121990A3

    公开(公告)日：2010-12-23

    申请号：PCT/EP2010055126

    申请日：2010-04-19

    Applicant: BASF SE ,  STROEFER ECKHARD ,  THIELE KAI ,  ZOELLINGER MICHAEL ,  MOORS JOHNNY ,  SPEIER JON S

    Inventor： STROEFER ECKHARD ,  THIELE KAI ,  ZOELLINGER MICHAEL ,  MOORS JOHNNY ,  SPEIER JON S

    IPC: C07C209/62 ,  C07C209/78 ,  C07C211/55

    CPC classification number: C07C209/78 ,  C07C209/62 ,  C07C211/50

    Abstract: The invention relates to a method for producing methylene diphenyl diamine (MDA) comprising the following steps a) to c): a) converting formaldehyde and aniline to an aminal, (b) removing water from the aminal obtained in step a), wherein a water content of 0 to 5 wt. % relative to the aminal is set, and c) adding an acid catalyst to the aminal with a water content of 0 to 5 wt. %, characterized in that in step a) formaldehyde is used as a highly concentrated formaldehyde with a CH2O content > 50 wt. % and the formaldehyde is produced by the oxidative dehydrogenation of methanol.

    Abstract translation: 本发明涉及一种用于二苯基甲烷二胺（MDA）的制备包括以下步骤a）至c）：从在步骤a）的缩醛胺中获得的产物：a）甲醛和苯胺缩醛胺B的反应）除去水，其中水含量 0相对于5重量％调节到缩醛胺，和c）加入酸催化剂的缩醛胺为0的水含量至5重量％，其特征在于在步骤a）甲醛为高度浓缩的甲醛具有CH 2 O 含量> 50重量％时，和甲醛是由甲醇的氧化脱氢制备。

    PROCESS FOR PREPARING TOLYLENEDIAMINE BY HYDROGENATION OF DINITROTOLUENE
    5.
    发明专利
    PROCESS FOR PREPARING TOLYLENEDIAMINE BY HYDROGENATION OF DINITROTOLUENE 未知

    公开(公告)号：SG185374A1

    公开(公告)日：2012-12-28

    申请号：SG2012079281

    申请日：2011-05-09

    Applicant: BASF SE

    Inventor： RAICHLE ANDREAS ,  COELHO TSOU JOANA ,  NETO SAMUEL ,  PENZEL URLICH ,  OEHLENSCHLAEGER STEFFEN ,  ZOELLINGER MICHAEL ,  BRAUNSBERG HOLGAR ,  HAASE STEFANIE ,  BUETTNER JOHANNES

    Abstract: 20 AbstractPROCESS FOR PREPARING TOLYLENEDIAMINE BY HYDROGENATION OF DINITROTOLUENEThe invention relates to a process for continuous preparation of tolylenediamine by liquid phase hydrogenation of dinitrotoluene with hydrogen in the presence of a suspended nickel-containing catalyst in a reactor with a product removal unit connected downstream of the reactor to obtain a product output from the reactor comprising a liquid phase containing tolylenediamine and dinitrotoluene in which the nickel-containing catalyst is suspended, wherein the concentration of dinitrotoluene in the liquid phase of the product output from the reactor in the region between the reactor and the downstream product removal unit is adjusted to a value in the range from 1 to 200 ppm by weight, based on the total weight of the liquid phase of the product output from the reactor.No suitable figure

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