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    DISCRIMINATION OF CIS- AND TRANS-1,3-DIAMINOCYCLOHEXANES
    15.
    发明申请
    DISCRIMINATION OF CIS- AND TRANS-1,3-DIAMINOCYCLOHEXANES 审中-公开

    公开(公告)号：US20190256451A1

    公开(公告)日：2019-08-22

    申请号：US16307999

    申请日：2017-06-08

    Applicant: BASF SE

    Inventor： Thomas INGRAM ,  Martin ERNST ,  Alexander PANCHENKO

    IPC: C07C209/86 ,  C07D487/08

    Abstract: In a process for discriminating cis- and trans-1,3-diaminocyclohexanes, a mixture of cis- and trans-1,3-diaminocyclohexanes is reacted with carbon dioxide or a reactive carbonic acid derivative and the urea of the cis-1,3-diaminocyclohexane, which can be separated off by means of a mechanical separation method, is obtained selectively. 4-Methylcyclohexane-1,3-diamine and/or 2-methylcyclohexane-1,3-diamine having a trans content of 99 mol % or more are obtainable in this way.

    PROCESS FOR PREPARING AMINES OVER A COPPER CATALYST
    17.
    发明申请
    PROCESS FOR PREPARING AMINES OVER A COPPER CATALYST 有权

    公开(公告)号：US20230025575A1

    公开(公告)日：2023-01-26

    申请号：US17781928

    申请日：2020-11-24

    Applicant: BASF SE

    Inventor： Martin ERNST ,  Ansgar Gereon ALTENHOF ,  Hermann LUYKEN ,  Tatjana HUBER ,  Sebastian HAUPT ,  Dieter KOLASSA

    IPC: C07C209/60 ,  B01J23/72 ,  B01J23/10 ,  B01J23/89 ,  B01J21/04

    Abstract: A process for preparing an amine by reacting an aldehyde and/or ketone with a nitrogen compound selected from the group consisting of ammonia and primary and secondary amines, and subsequent hydrogenation of the resulting reaction product in the liquid phase and in the presence of hydrogen and a heterogeneous copper oxide hydrogenation catalyst at a temperature of 20 to 230° C., wherein the aldehyde and/or ketone is reacted with the nitrogen compound either together with the hydrogenation in the liquid phase and in the presence of the hydrogen and of the catalyst (alternative 1) or in a step preceding the hydrogenation (alternative 2), and wherein the catalytically active composition of the catalyst, prior to reduction thereof with hydrogen, comprises at least 24% by weight of oxygen compounds of copper, calculated as Cu.

    PROCESS FOR REMOVAL OF ACID GASES FROM A FLUID STREAM WITH A LIQUID ABSORBENT COMPRISING A PIPERAZINE RING
    19.
    发明申请
    PROCESS FOR REMOVAL OF ACID GASES FROM A FLUID STREAM WITH A LIQUID ABSORBENT COMPRISING A PIPERAZINE RING 有权

    公开(公告)号：US20220152551A1

    公开(公告)日：2022-05-19

    申请号：US17431872

    申请日：2020-02-14

    Applicant: BASF SE

    Inventor： Martin ERNST ,  Thomas INGRAM ,  Gerald VORBERG ,  Georg SIEDER

    IPC: B01D53/14 ,  C10L3/10 ,  C07D295/13

    Abstract: A process for removal of acid gases from fluid stream, wherein the fluid stream is brought into contact with an absorbent to obtain a treated fluid stream and a laden absorbent, the absorbent comprising a diluent and a compound of the general formula (I) wherein R1 is selected from C1-C8-alkyl and C2-C8-hydroxyalkyl; R2 is selected from hydrogen and C1-C8-alkyl; R3 is selected from hydrogen and C1-C8-alkyl; R4 is selected from hydrogen and C1-C8-alkyl; R5 is C1-C8-alkyl; with the proviso that at least one of the following conditions (i) and (ii) is met: (i) R5 is C3-C8-alkyl bound to the nitrogen atom via a secondary or tertiary carbon atom; (ii) when R4 is hydrogen, R3 is C1-C8-alkyl; or when R4 is C1-C8-alkyl, at least one of R2 and R3 is C1-C8-alkyl; and n is an integer from 0 to 6. Further provided is an absorbent for the absorption of acid gases from a fluid stream, comprising a diluent and a compound of the general formula (I) as defined above, as well as the use of a compound of the general formula (I) as defined above for removal of acid gases from a fluid stream. The absorbents are useful for the selective removal of hydrogen sulfide from fluid streams and have high acid gas loading capacity, high stability, and low volatility.

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