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    21.
    发明专利
    未知

    公开(公告)号：DE59900645D1

    公开(公告)日：2002-02-21

    申请号：DE59900645

    申请日：1999-05-21

    Applicant: BASF AG

    Inventor： BRUNNER MELANIE ,  RAHN RALF-THOMAS ,  RHEUDE UDO ,  HENKELMANN JOCHEM

    IPC: C07D307/33 ,  C07D307/32 ,  C07D315/00

    Abstract: Process for producing butyrolactones of the general formula Iwhere R1 and R2 are each hydrogen, alkyl, hydroxyalkyl, substituted or unsubstituted aryl or substituted or unsubstituted trialkylsilyl, by reacting alkynes of the general formula IIwhere R1 and R2 are each as defined above, with carbon monoxide and water in the presence of a rhodium catalyst under pressures from 20 to 300 bar and hydrogenating the unhydrogenated 2(5H)-furanone intermediates comprisesa) reacting the carbonylation reaction mixture with hydrogen at from 150 to 250° C. and from 100 to 300 bar,b) removing the precipitated catalyst and returning it into the carbonylation reaction, andc) subjecting the catalyst-free reaction mixture to a distillation to recover the butyrolactone.

    Production of highly pure butan-1,4-diol, useful for producing polyesters, gamma-butyrolactone and tetrahydrofuran
    24.
    发明专利
    Production of highly pure butan-1,4-diol, useful for producing polyesters, gamma-butyrolactone and tetrahydrofuran 未知

    公开(公告)号：DE19818248A1

    公开(公告)日：1999-10-28

    申请号：DE19818248

    申请日：1998-04-23

    Applicant: BASF AG

    Inventor： FISCHER ROLF ,  KAIBEL GERD ,  PINKOS ROLF ,  RAHN RALF-THOMAS

    IPC: C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07C51/16 ,  C07C67/03 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/32 ,  C07D307/33 ,  C07D315/00 ,  C07C29/147 ,  C07C29/74 ,  C07B41/00

    Abstract: Production of butan-1,4-diol (I) and optionally psi -butyrolactone (GBL) and tetrahydrofuran (THF) involves (i) oxidation of n-butane or benzene to a product stream containing maleic anhydride (II); (ii) absorption of (II) with a high-boiling inert solvent (III); (iii) esterification of the resultant liquid (IV) with a 1-5 carbon (C) alcohol (V) to a stream (VI) containing the corresponding diester and (III); and (iv) hydrogenation of (VI) to give a stream containing (I), optionally GBL and THF and (V), which is separated by distillation into valuable products and (V), (V) being recycled to the esterification zone. The novelty is that, before hydrogenation, (VI) is separated by vacuum distillation into the diester and (III), (III) is recycled to the absorption stage and the diester is hydrogenated in the liquid phase on a stationary bed catalyst. Production of butan-1,4-diol (I) and optionally psi -butyrolactone (GBL) and tetrahydrofuran (THF) involves; (i) oxidation of n-butane or benzene to a product stream containing maleic anhydride (II); (ii) absorption of (II) from the product stream with a high-boiling inert solvent (III) in an absorption stage, giving a liquid absorption discharge (IV); (iii) esterification of (IV) with a 1-5 carbon (C) esterification alcohol (V) in an esterification stage to an esterification discharge (VI) containing the corresponding diester and (III); and (iv) hydrogenation of (VI) to give a hydrogenation discharge containing (I), optionally GBL and THF and (V), which is separated by distillation into valuable products and (V), (V) being recycled to the esterification zone. The novelty is that, before hydrogenation, (VI) is separated by vacuum distillation into the diester and (III), (III) is recycled to the absorption stage and the diester is hydrogenated in the liquid phase on a stationary bed catalyst.

    BLEACH SYSTEMS ENVELOPED WITH POLYMER LAYERS
    25.
    发明专利
    BLEACH SYSTEMS ENVELOPED WITH POLYMER LAYERS 未知

    公开(公告)号：CA2647895A1

    公开(公告)日：2007-10-18

    申请号：CA2647895

    申请日：2007-04-03

    Applicant: BASF AG

    Inventor： HABERLE KARL ,  DIETSCHE FRANK ,  RAHN RALF-THOMAS ,  HARING DIETMAR

    IPC: C11D3/39 ,  C11D17/00

    Abstract: The invention relates to a bleach system comprising at least one component selected from bleach, bleach activator or bleach catalyst, wherein the bleach system is enveloped with at least one polymer layer and the polymer has urethane and urea groups. The inventive bleach system and detergent formulations comprising this bleach system are suitable for washing or cleaning textiles or dishware.

    28.
    发明专利
    未知

    公开(公告)号：AT273292T

    公开(公告)日：2004-08-15

    申请号：AT01984809

    申请日：2001-12-07

    Applicant: BASF AG

    Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  STEIN FRANK ,  RAHN RALF-THOMAS ,  WECK ALEXANDER ,  KAIBEL GERD

    IPC: C07B61/00 ,  C07D307/08 ,  C07D307/33

    Abstract: The present invention relates to a process for the gas-phase hydrogenation of C4-dicarboxylic acids and/or their derivatives over a catalyst based on copper oxide to give substituted or unsubstituted gamma-butyrolactone and/or tetrahydrofuran, which comprises, which a first reaction zone in which the C4-dicarboxylic acid and/or its derivatives is/are reacted to give a mixture comprising a substituted or unsubstituted gamma-butyrolactone as main product and a subsequent second reaction zone in which the substituted or unsubstituted gamma-butyrolactone present in the mixture from the first hydrogenation step is reacted at a temperature lower than the temperature in the first hydrogenation step to give substituted or unsubstituted tetrahydrofuran.

    29.
    发明专利
    未知

    公开(公告)号：DE59906265D1

    公开(公告)日：2003-08-14

    申请号：DE59906265

    申请日：1999-04-16

    Applicant: BASF AG

    Inventor： FISCHER ROLF ,  KAIBEL GERD ,  PINKOS ROLF ,  RAHN RALF-THOMAS

    IPC: C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07C51/16 ,  C07C67/03 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/32 ,  C07D307/33 ,  C07D315/00

    Abstract: A process for preparing 1,4-butanediol and, if desired, gamma-butyrolactone and THF by oxidizing butane or benzene to form a product stream including maleic anhydride, absorbing maleic anhydride from the product stream with a high-boiling inert solvent in an absorption stage to give a liquid absorption product, esterifying the liquid absorption product with a C1-C5 esterifying alcohol in an esterification stage to form an esterification product comprising the corresponding diester and high-boiling inert solvent, then hydrogenating the esterification product to give a hydrogenation product which comprises the products of value, 1,4-butanediol and, if desired, gamma-butyrolactone and tetrahydrofuran and the esterifying alcohol and which is separated by distillation into the products of value and the esterifying alcohol, and recycling the esterifying alcohol to the esterification zone, which comprises separating the esterification product into the diester and the inert solvent by distillation under reduced pressure prior to the hydrogenation, recycling the inert solvent to the absorption stage, and hydrogenating the diester in the liquid phase over a fixed-bed catalyst.

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