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    PREPARATION OF 1,6-HEXANEDIOL
    1.
    发明专利
    PREPARATION OF 1,6-HEXANEDIOL 未知

    公开(公告)号：MY137827A

    公开(公告)日：2009-03-31

    申请号：MYPI20054914

    申请日：2005-10-19

    Applicant: BASF AG

    Inventor： SIRCH TILMAN ,  TEBBEN GERD-DIETER DR ,  HECK LUDWIG E ,  DIEFENBACHER ARMIN DR ,  KRAUSE ALFRED DR ,  BORGEL FRANZ

    Abstract: 1 7 PREPARATION OF 1,6-HEXANEDIOL ABSTRACT 5 THE PRESENT INVENTION PROVIDES A PROCESS FOR PREPARING 1,6-HEXANEDIOL FROM A CARBOXYLIC ACID MIXTURE WHICH COMPRISES ADIPIC ACID, 6-HVBROXYCAPROIC ACID AND SMALL AMOUNTS OF 11,4-CYCLOHEXANCCLIOLS AND IS OBTAINED AS A BY-PRODUCT IN THE OXIDATION OF CYCLOHEXANE TO CVCLOHEXANONELCYCLOHEXANOL WITH OXYGEN OR OXVGCN-CONTAININO CASES AND BY %,ALEI EXTRACTION OL THE REACTION MIXTURE, BY ESIERILICATION OF ZHE ACIDS AND 10 HYDROGENATION, IN WHICH A) THE MONO- AND DICARBOXYLIC ACIDS PRESENT IN THE AQUEOUS DICARBOXYLIC ACID MIXTURE ARE REACTED WITH A LOW MOLECULAR WEIGHT ALCOHOL TO GIVE THE CORRESPONDING C@RBOXYLIC ESTERS, 1 5 B) THE RESULTING ESTERIFICATION MIXTURE IS FREED OF EXCESS ALCOHOL AND LOW BOILERS IN A FIRST DISTILLATION STAGE, C) A SEPARATION OF THE BOTTOM PRODUCT IS CARRIED OUT IN A SECOND DISTILLATION STAGE INTO 20 AN ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANECLIOLS AND A FRACTION COMPRISING AT LEAST THE MAJORITY OF THE 1,4-CYCLOHEXANEDIOLS, D) THE ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANEDIOLS IS CATAL ICALLY YT HYDROGENATED AND 25 E) 1,6-HEXANEDIAL IS OBTAINED IN A PURIFYING DISTILLATION STAGE FROM THE HYDROGENATION EFFLUENT WHILE REMOVING AN ALCOHOL-LOW BOILER MIXTURE IN A MANNER KNOWN PER SE, WHEREIN ALCOHOL IS REMOVED BY A MEMBRANE SYSTEM FROM THE MIXTURES, OBTAINED AFTER THE ESTERIFICATION IN STAGE B) AND/OR AFTER THE HYDROGENATION IN STAGE E), OF 30 ALCOHOLS AND LOW BOILERS AND RECYCLED INTO THE ESTERIFICATION. Z)OAM4 I Q /I O/O@-

    3.
    发明专利
    未知

    公开(公告)号：DE102004054047A1

    公开(公告)日：2006-05-11

    申请号：DE102004054047

    申请日：2004-11-05

    Applicant: BASF AG

    Inventor： SIRCH TILMAN ,  TEBBEN GERD-DIETER ,  HECK LUDWIG E ,  DIEFENBACHER ARMIN ,  KRAUSE ALFRED ,  BORGEL FRANZ

    IPC: C07C31/20 ,  C07C27/04

    Abstract: The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-containing gases and by water extraction of the reaction mixture, by esterification of the acids and hydrogenation, in which a) the mono- and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) a separation of the bottom product is carried out 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, d) the ester fraction substantially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) 1,6-hexanediol is obtained in a purifying distillation stage from the hydrogenation effluent while removing an alcohol-low boiler mixture in a manner known per se, wherein alcohol is removed by a membrane system from the mixtures, obtained after the esterification in stage b) and/or after the hydrogenation in stage e), of alcohols and low boilers and recycled into the esterification.

    Apparatus, for production of toluylene diisocyanate and methylenediphenyl diisocyanate, comprises distillation column and/or container and rotating evaporator
    6.
    发明专利
    Apparatus, for production of toluylene diisocyanate and methylenediphenyl diisocyanate, comprises distillation column and/or container and rotating evaporator 未知

    公开(公告)号：DE10064196A1

    公开(公告)日：2002-07-11

    申请号：DE10064196

    申请日：2000-12-22

    Applicant: BASF AG

    Inventor： BREDEHOEFT JAN PETER ,  PALLASCH HANS-JUERGEN ,  HECK LUDWIG E ,  STROEFER ECKHARD

    IPC: B01D3/00 ,  B01D3/32 ,  C07C263/10 ,  B01D1/30 ,  C07B61/00

    Abstract: Apparatus for performing chemical reactions comprises at least one distillation column (10) and/or at least one container as well as at least one rotating evaporator that are connected to each other by connecting elements. Apparatus for performing chemical reactions comprises at least one distillation column (10) and/or at least one container as well as at least one rotating evaporator that are connected to each other by connecting elements. Liquid is completely or partially fed beneath the rotating evaporator via a lower tube plate from a plate (12), packed bed, filling or liquid collector of the distillation column or from an external feed stream. Independent claims are included for; (1) A process for the production of toluylene diisocyanate (TDI) from toluylenediamine, its amine hydrochloride and phosgene using the above apparatus; and (2) A process for the production of methylenediphenyldiisocyanate (MDI) from methylenediphenyldiamine (MDA), its amine hydrochloride and phosgene using the above apparatus.

    METHOD FOR PRODUCING 1,6 HEXANE DIOL
    7.
    发明专利
    METHOD FOR PRODUCING 1,6 HEXANE DIOL 未知

    公开(公告)号：CA2547261A1

    公开(公告)日：2006-05-11

    申请号：CA2547261

    申请日：2005-10-27

    Applicant: BASF AG

    Inventor： TEBBEN GERD-DIETER ,  DIEFENBACHER ARMIN ,  KRAUSE ALFRED ,  HECK LUDWIG E ,  BORGEL FRANZ ,  SIRCH TILMAN

    IPC: C07C29/149 ,  C07C31/20

    Abstract: The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-containing gases and by water extraction of the reaction mixture, by esterification of the acids and hydrogenation, in which a) the mono- and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) a separation of the bottom product is carried out 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, d) the ester fraction substantially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) 1,6-hexanediol is obtained in a purifying distillation stage from the hydrogenation effluent while removing an alcohol-low boiler mixture in a manner known per se, wherein alcohol is removed by a membrane system from the mixtures, obtained after the esterification in stage b) and/or after the hydrogenation in stage e), of alcohols and low boilers and recycled into the esterification.

    10.
    发明专利
    未知

    公开(公告)号：AT300987T

    公开(公告)日：2005-08-15

    申请号：AT02719855

    申请日：2002-02-15

    Applicant: BASF AG

    Inventor： BREDEHOEFT JAN PETER ,  PALLASCH HANS-JUERGEN ,  HECK LUDWIG E ,  STROEFER ECKHARD

    IPC: B01D1/30 ,  B01D3/32 ,  B60P1/28 ,  C07C263/10 ,  C07C265/14 ,  B01D3/00

    Abstract: An arrangement for carrying out chemical reactions comprises at least one distillation column and/or at least one container and at least one circulation evaporator, which are connected to one another via connecting elements, liquid being taken off completely or partly from a tray or from a stacked packing bed or from a dumped packing bed or from a liquid collector of the distillation column or being fed as an external feed stream below the lower tube sheet of the circulation evaporator to said evaporator.

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