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    PURIFICATION AND PRODUCTION OF 2,3,5-TRIMETHYL- PARABENZOQUINONE BY CATALYTIC OXIDATION
    1.
    发明专利
    PURIFICATION AND PRODUCTION OF 2,3,5-TRIMETHYL- PARABENZOQUINONE BY CATALYTIC OXIDATION 失效

    公开(公告)号：JP2000143576A

    公开(公告)日：2000-05-23

    申请号：JP28592699

    申请日：1999-10-06

    Applicant: BASF AG

    Inventor： RUFF DETLEF DR ,  BAUMANN DIETER ,  AQUILA WERNER DR ,  SCHUBERT JUERGEN ,  LECHTKEN PETER

    IPC: B01J31/22 ,  C07B61/00 ,  C07C46/08 ,  C07C46/10 ,  C07C50/02 ,  C07C50/04

    Abstract: PROBLEM TO BE SOLVED: To provide a method for purifying or isolating 2,3,5-trimethyl-p- benzoquinone by surely removing intermediates and by-products formed during production of the compound and avoiding degradation of the component by diminishing the thermal stress caused by the treatment by separating the compound by the crystallization. SOLUTION: A method is provided for purifying 2,3,5-trimethyl-p-benzoquinone (TMQ) or isolating TMQ from a TMQ-containing mixture by separating by crystallizing preferably at -6 to 32 deg.C. A TMQ-containing mixture to be purified or TMQ contains TMQ preferably at 1-99.999 wt.%, more preferably at 90-99.999 wt.%. The TMQ-containing mixture is formed preferably by the catalytic oxidation of trimethylphenol. TMQ is a useful intermediate for the production of trimethylhydroquinone which is a precursor for the synthesis of α-tocopherol.

    Verfahren zur Herstellung von Triphenylphosphin
    2.
    发明公开
    Verfahren zur Herstellung von Triphenylphosphin 失效
    制备三苯基膦的方法

    公开(公告)号：EP0761676A3

    公开(公告)日：1998-07-15

    申请号：EP96113453

    申请日：1996-08-22

    Applicant: BASF AG

    Inventor： HERMELING DIETER ,  HUGO RANDOLF ,  LECHTKEN PETER ,  ROTERMUND GERHARD W ,  SIEGEL HARDO

    IPC: C07F9/50

    CPC classification number: C07F9/509

    Abstract: Verfahren zur Herstellung von Triphenylphosphin durch Reduktion von Triphenylphosphindichlorid an unedlen Metallen bei Temperaturen von 50 bis 150°C und Drücken von 0,2 bis 10 bar, indem das Triphenylphosphindichlorid zu 50 bis 100 Gew.-% kovalent und zu 50 bis 0 Gew.-% ionisch vorliegt.

    Abstract translation: 一种用于通过减少对贱金属二氯化三苯基膦在50至150℃和0.2至10巴的压力由dichlorotriphenylphosphorus到50〜100重量％共价和50〜0重量制备三苯基膦处理 ％离子。

    3.
    发明专利
    未知

    公开(公告)号：NO175486B

    公开(公告)日：1994-07-11

    申请号：NO891647

    申请日：1989-04-21

    Applicant: BASF AG

    Inventor： HOERCHER ULRICH ,  LECHTKEN PETER

    IPC: C11C1/08 ,  A61K31/23 ,  C11B1/02 ,  C11B3/02

    Abstract: A process for removing unwanted odours from mixtures of fatty acid esters which, besides other components, contain the esters of highly unsaturated fatty acids, especially of highly unsaturated omega -3-fatty acids, such as eicosapentaenoic acid or docosahexaenoic acid, is characterised in that the mixture of fatty acid esters is treated with complex hydrides, in particular with sodium borohydride solution. The process is particularly suitable for removing unwanted odours from mixtures of fatty acid esters which have been obtained from fish oil, for example from fish oil by transesterification with alkanols with 1 to 3 C atoms.

    4.
    发明专利
    未知

    公开(公告)号：NO891647D0

    公开(公告)日：1989-04-21

    申请号：NO891647

    申请日：1989-04-21

    Applicant: BASF AG

    Inventor： HOERCHER ULRICH ,  LECHTKEN PETER

    IPC: C11C1/08 ,  A61K31/23 ,  C11B1/02 ,  C11B3/02 ,  C11B

    Abstract: A process for removing unwanted odours from mixtures of fatty acid esters which, besides other components, contain the esters of highly unsaturated fatty acids, especially of highly unsaturated omega -3-fatty acids, such as eicosapentaenoic acid or docosahexaenoic acid, is characterised in that the mixture of fatty acid esters is treated with complex hydrides, in particular with sodium borohydride solution. The process is particularly suitable for removing unwanted odours from mixtures of fatty acid esters which have been obtained from fish oil, for example from fish oil by transesterification with alkanols with 1 to 3 C atoms.

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