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    PROCESS FOR CONTINUOUSLY PREPARING DI-C1-3-ALKYL SUCCINATES
    42.
    发明申请
    PROCESS FOR CONTINUOUSLY PREPARING DI-C1-3-ALKYL SUCCINATES 审中-公开

    公开(公告)号：US20170342015A1

    公开(公告)日：2017-11-30

    申请号：US15659058

    申请日：2017-07-25

    申请人： BASF SE

    发明人： Stefanie Demming ,  Suman Thotla ,  Jens Wittenberg ,  Gabriele Iffland ,  Till Christian Brueggemann ,  Yvonne Hoelzl ,  Wolfgang Siegel ,  Stephan Freyer

    IPC分类号： C07C67/08 ,  B01D3/14 ,  C07C67/54 ,  C07C69/40

    CPC分类号： C07C67/08 ,  B01D3/141 ,  C07C67/54 ,  C07C69/40

    摘要： The invention relates to a process for continuously preparing di-C1-3-alkyl succinates by reacting succinic acid with an C1-3-alkanol in the presence of a fixed-bed heterogeneous acidic esterification catalyst in a tubular reactor at a temperature in the range of from 60 to 100° C., wherein a mixture, comprising succinic acid, C1-3-alkanol, mono-C1-3-alkyl succinate, di-C1-3-alkyl succinate and water, is formed in a mixing stage and fed to the entrance of the tubular reactor, and wherein 5 to 75% of the outlet flow rate of the tubular reactor are recycled directly to the mixing stage as a recycle stream, and the molar ratio of C1-3-alkanol to succinic acid added to the mixing zone, and not including the C1-3-alkanol and succinic acid at the recycle stream, being in the range of from 2.0 to 9.5. The invention furthermore relates to a process for separating the reactor effluent of an esterification of succinic acid with an C1-3-alkanol to give di-C1-3-alkyl succinates by distillation, wherein the separation is performed in a divided wall column in which C1-3-alkanol and water are removed in a top draw of the column, di-C1-3-alkyl succinate is removed in a side draw of the column, and wherein mono-C1-3-alkyl succinate and succinic acid are removed in a bottom draw of the column.

    METHOD FOR PRODUCING LEVULINIC ACID ESTER
    44.
    发明申请
    METHOD FOR PRODUCING LEVULINIC ACID ESTER 审中-公开

    公开(公告)号：US20170327453A1

    公开(公告)日：2017-11-16

    申请号：US15525108

    申请日：2016-02-01

    申请人： UBE INDUSTRIES, LTD. ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

    发明人： Koji NEMOTO ,  Kenichi TOMINAGA ,  Kazuhiko SATO ,  Atsushi YAMADA ,  Yasushi YAMAMOTO

    IPC分类号： C07C67/08

    CPC分类号： C07C67/08 ,  C07B61/00 ,  C07C67/00 ,  C07C69/716

    摘要： Provided is a method for efficiently producing a levulinic acid ester from a cellulose-containing raw material or a carbohydrate-containing raw material in an alcohol solvent using an inexpensive, easily available catalytic system. In a method for producing a levulinic acid ester by reacting at least one of a cellulose-containing raw material and a carbohydrate-containing raw material in the presence of an alcohol and a catalyst, use is made of, as a catalyst, a combination of: at least one metal compound (exclusive of gallium acetylacetonate and indium acetylacetonate) selected from the group consisting of hydroxide salts, sulfates, nitrates, carboxylates, alkoxides, acetylacetonates, and oxides of at least one metal selected from the group consisting of metals belonging to Group XIII and Group XIV of the Periodic Table; and an organic sulfonic acid.

    AN AGENT FOR IMPROVING MITOCHONDRIAL FUNCTION
    46.
    发明申请
    AN AGENT FOR IMPROVING MITOCHONDRIAL FUNCTION 审中-公开

    公开(公告)号：US20170312200A1

    公开(公告)日：2017-11-02

    申请号：US15521464

    申请日：2015-10-20

    申请人： SHOWA DENKO K.K.

    发明人： Yuko SAEKI

    IPC分类号： A61K8/37 ,  C07C67/08 ,  C07C67/03 ,  A61Q19/08 ,  A61Q19/00 ,  C07C67/317 ,  A61K8/06

    CPC分类号： A61K8/37 ,  A61K8/06 ,  A61K8/33 ,  A61K8/365 ,  A61K31/22 ,  A61Q19/00 ,  A61Q19/08 ,  C07C67/03 ,  C07C67/08 ,  C07C67/317

    摘要： Provided is an agent for improving mitochondrial function including a hydroxycitric acid derivative represented by the following Formula (I) or a salt thereof, as an active ingredient [(In Formula (I), R1 and R2 each independently represent a hydrogen atom or any one group selected from the group represented by the following Formula (Ia) (here, R1 and R2 do not represent hydrogen atoms at the same time), X1 to X3 each independently represent a nitrogen or an oxygen atom, and R3, R4, R5, R3′ R4′, and R5′ each independently represent a hydrogen atom, or a chained hydrocarbon group (here, in a case where X1, X2, and X3 each independently represent an oxygen atom, corresponding R3′, R4′, or R5′ does not exist). In Formula (Ia), R6 to R8 each independently represent a hydrogen atom, an aryl group, or a chained hydrocarbon group having 1 to 30 carbon atoms].

    METHOD FOR PRODUCING DIESTERS OF TEREPHTHALIC ACID
    48.
    发明申请
    METHOD FOR PRODUCING DIESTERS OF TEREPHTHALIC ACID 有权

    公开(公告)号：US20170283363A1

    公开(公告)日：2017-10-05

    申请号：US15513730

    申请日：2015-09-21

    申请人： BASF SE

    发明人： ARMIN SCHRAUT ,  Martin KALLER ,  Rob BRONNEBERG ,  Jasmin STAMMER ,  Martin DAS ,  Gerrit HARNISCHMACHER

    IPC分类号： C07C67/08

    CPC分类号： C07C67/08 ,  C07C69/82

    摘要： The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst to obtain a reaction suspension, a stream of the reaction suspension is drawn off from the reactor, passed through a heat exchanger outside the reactor and heated and the heated reaction suspension is recycled into the reactor, and water of reaction is distilled off together with the vapor as alcohol-water azeotrope, the vapor is at least partly condensed, the condensate is separated into an aqueous phase and an organic phase and the organic phase is at least partly recycled into the reactor.

    IMPROVED METHOD FOR PRODUCING ALKYL (METH)ACRYLATES
    50.
    发明申请
    IMPROVED METHOD FOR PRODUCING ALKYL (METH)ACRYLATES 有权

    公开(公告)号：US20170267624A1

    公开(公告)日：2017-09-21

    申请号：US15329910

    申请日：2015-06-22

    申请人： Arkema France

    发明人： Anne MORELIERE ,  Gilles FRIMOUR ,  Jean-Michel PAUL ,  Stephane DENIS

    IPC分类号： C07C67/08 ,  C07C67/54

    CPC分类号： C07C67/08 ,  C07C67/54 ,  Y02P20/582 ,  C07C69/54

    摘要： The present invention relates to a method for producing a C4-C10 alkyl (meth)acrylate, by direct esterification of (meth)acrylic acid by the corresponding alcohol, the reaction water being removed in the form of an azeotrope with the esterification alcohol from a distillation column mounted over the esterification reactor comprising a cationic resin as a catalyst. Said method is characterized in that the molar ratio of alcohol to acid at the inlet of the reactor is between 1.4 and 3, and in that the crude reaction mixture circulates in a recirculation loop joining the reactor and the water removal column, at a recirculation rate of between 6 and 25, expressed by the mass ratio between the flow fed into the loop and the flow sent to a purification treatment.