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    42.
    发明专利
    未知

    公开(公告)号：AT376987T

    公开(公告)日：2007-11-15

    申请号：AT05759413

    申请日：2005-07-07

    Applicant: BASF AG

    Inventor： HAUNERT ANDREA ,  PINKOS ROLF ,  KRUG THOMAS ,  SIRCH TILMAN ,  KOCH MICHAEL ,  TEBBEN GERD-DIETER

    IPC: C07C29/145 ,  C07C29/149 ,  C07C31/20

    Abstract: The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by a) freeing resulting the esterification mixture of excess alcohol and low boilers in a first distillation stage (alcohol removal), b) carrying out a separation of the bottom product in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, c) catalytically hydrogenating the ester fraction substantially free of 1,4-cyclohexanediols (ester hydrogenation) and d) in a purifying distillation stage, obtaining 1,6-hexanediol from the hydrogenation effluent in a manner known per se, which comprises selectively hydrogenating the ester mixture before stage a) and/or before stage b) (purifying hydrogenation).

    43.
    发明专利
    未知

    公开(公告)号：DE50112632D1

    公开(公告)日：2007-07-26

    申请号：DE50112632

    申请日：2001-11-02

    Applicant: BASF AG

    Inventor： DERNBACH MATTHIAS ,  KOCH MICHAEL ,  SCHULZ GERHARD ,  WEIGL HAGEN ,  MAAS STEFFEN

    IPC: C07C29/141 ,  C07B61/00 ,  C07C31/20 ,  C07C31/22 ,  C07C31/24 ,  C07C45/78 ,  C07C47/19

    Abstract: In a process for the catalytic hydrogenation of a polymethylolalkanal or a monomethylolalkanal of the formula (I) where R may be identical or different and are each a substituted or unsubstituted aliphatic hydrocarbon having from 1 to 22 carbon atoms, an aryl or arylalkyl group having from 6 to 22 carbon atoms or a methylol group, in the presence of a copper-containing catalyst, the hydrogenation feed comprising the polymethylolalkanal or monomethylolalkanal has a total content of metal ions of groups 3 to 14 of the Periodic Table of the Element of up to 5 ppm.

    44.
    发明专利
    未知

    公开(公告)号：AT363464T

    公开(公告)日：2007-06-15

    申请号：AT02710816

    申请日：2002-01-29

    Applicant: BASF AG

    Inventor： HAAKE MATHIAS ,  SCHWAB EKKEHARD ,  KOCH MICHAEL ,  MUELLER HANS-JOACHIM ,  STROEZEL MANFRED ,  PETERSEN HERMANN ,  SCHREYER PETER

    IPC: C07C51/487 ,  B01J21/18 ,  B01J23/44 ,  B01J32/00 ,  B01J35/02 ,  B01J35/06 ,  B01J35/10 ,  C07B35/02 ,  C07C29/17 ,  C07C63/26

    Abstract: A process for the purification of crude terephthalic acid comprises catalytic hydrogenation using a catalyst material (I) comprising a ca bon supported hydrogenation metal whereby the carbon support comprises carbon fibers. Independent claims are included for: (1) the catalyst material (I) whereby the carbon support has a BET surface area of less than 500 Micro 2>/g; (2) a reactor (II) containing a flat catalyst material in the form of cloth, textile and/or felt comprising a hydrogenation metal applied to carbon fibers and having at least two edges opposite to each other to which the catalyst material is stably affixed or containing the catalyst material in the form of parallel fibers or bands; and (3) a process for the selective hydrogenation of carbon-carbon double or triple bonds and/or hydrogenatable functional groups using the catalyst material (I) or reactor (II).

    46.
    发明专利
    未知

    公开(公告)号：DE50208083D1

    公开(公告)日：2006-10-19

    申请号：DE50208083

    申请日：2002-10-18

    Applicant: BASF AG

    Inventor： KOCH MICHAEL ,  WARTINI ALEXANDER ,  SIRCH TILMAN ,  DERNBACH MATTHIAS

    IPC: C07C29/88 ,  C07C29/90 ,  C07C31/22

    Abstract: A method for removing trialkyl ammonium formate from a methylol alkanes obtained by condensation of formaldehyde with a higher aldehyde. The invention is characterized in that trialkyl ammonium formate is decomposed at a high temperature using catalysts containing at least one metal from groups 8-12 of the classification of elements in the presence of gas containing hydrogen. The method makes it possible to separate trialkyl ammonium formate according to the organic Cannizzaro method and according to the hydrogenation method.

    50.
    发明专利
    未知

    公开(公告)号：BR0213258A

    公开(公告)日：2004-09-28

    申请号：BR0213258

    申请日：2002-10-18

    Applicant: BASF AG

    Inventor： KOCH MICHAEL ,  WARTINI ALEXANDER ,  SIRCH TILMAN ,  DERNBACH MATTHIAS

    IPC: C07C29/90 ,  C07C29/88 ,  C07C31/22

    Abstract: A method for removing trialkyl ammonium formate from a methylol alkanes obtained by condensation of formaldehyde with a higher aldehyde. The invention is characterized in that trialkyl ammonium formate is decomposed at a high temperature using catalysts containing at least one metal from groups 8-12 of the classification of elements in the presence of gas containing hydrogen. The method makes it possible to separate trialkyl ammonium formate according to the organic Cannizzaro method and according to the hydrogenation method.

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