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    4.
    发明专利
    未知

    公开(公告)号：DE10231942A1

    公开(公告)日：2004-01-29

    申请号：DE10231942

    申请日：2002-07-15

    Applicant: BASF AG

    Inventor： GOEBBEL HANS-GEORG ,  GERLACH TILL ,  WEGNER GUENTER ,  FUCHS HARTWIG ,  UNVERRICHT SIGNE ,  SALDEN AXEL

    IPC: C07B61/00 ,  C07C29/141 ,  C07C33/025 ,  B01J8/22

    Abstract: A process is described for selectively hydrogenating citronellal to citronellol in which a liquid phase, in which the citronellal is dissolved and particles of a catalyst are suspended which is capable of preferentially hydrogenating carbon-oxygen double bonds over carbon-carbon double bonds, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas.

    5.
    发明专利
    未知

    公开(公告)号：DE50309035D1

    公开(公告)日：2008-03-06

    申请号：DE50309035

    申请日：2003-07-14

    Applicant: BASF AG

    Inventor： GOEBBEL HANS-GEORG ,  GERLACH TILL ,  WEGNER GUENTER ,  FUCHS HARTWIG ,  UNVERRICHT SIGNE ,  SALDEN AXEL

    IPC: C07C29/141 ,  C07B61/00 ,  C07C33/025

    Abstract: A process is described for selectively hydrogenating citronellal to citronellol in which a liquid phase, in which the citronellal is dissolved and particles of a catalyst are suspended which is capable of preferentially hydrogenating carbon-oxygen double bonds over carbon-carbon double bonds, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas.

    Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids, useful as polymer plasticizers, comprises reaction of a diene-maleic acid anhydride mixture, esterification and hydrogenation.
    8.
    发明专利
    Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids, useful as polymer plasticizers, comprises reaction of a diene-maleic acid anhydride mixture, esterification and hydrogenation. 未知

    公开(公告)号：DE10131260A1

    公开(公告)日：2003-01-09

    申请号：DE10131260

    申请日：2001-06-29

    Applicant: BASF AG

    Inventor： SALDEN AXEL ,  MASSONNE KLEMENS ,  KAIBEL GERD

    IPC: C08K5/12 ,  C07C67/08 ,  C07B41/08 ,  C07C51/09 ,  C07C61/08 ,  C07C67/303 ,  C07C69/75

    Abstract: Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids or corresponding derivatives comprises: (A) reaction of a diene-maleic acid anhydride mixture to form an alkyl (un)substituted cyclohexene dicarboxylic acid anhydride in the condensed phase; (B) formation of the esters; and (C) hydrogenation to the corresponding cyclohexane derivative in either order. Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids or corresponding derivatives (I) comprises: (A) reaction of a diene-maleic acid anhydride mixture to form an alkyl (un)substituted cyclohexene dicarboxylic acid anhydride in the condensed phase; (B) formation of an ester of an alkyl substituted or unsubstituted cyclohexene dicarboxylic acid anhydride; and (C) hydrogenation of the ester from step (B) to the corresponding cyclohexane derivative or (B') hydrogenation of the alkyl (un)substituted cyclohexene dicarboxylic acid anhydride from step (A), followed by (C') formation of an ester from the cyclohexane dicarboxylic acid anhydride from step (B'). Independent claims are also included for the following: (1) a mixture (II) of alkyl (un)substituted cyclohexane dicarboxylic acids or derivatives (I); and (2) a process for the separation of butadiene from butadiene containing hydrocarbon streams comprises: (i) reaction of the hydrocarbon stream with maleic acid anhydride; and (ii) separation of the resulting cyclohexene dicarboxylic acid anhydride from the remaining hydrocarbons.

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