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    PROCESS FOR THE PRODUCTION OF ALKENYL CARBOXYLATES
    4.
    发明授权
    PROCESS FOR THE PRODUCTION OF ALKENYL CARBOXYLATES 有权
    方法生产链烯基

    公开(公告)号：EP1549605B1

    公开(公告)日：2012-08-08

    申请号：EP03753709.9

    申请日：2003-09-29

    申请人： Ineos Commercial Services UK Limited

    发明人： DITZEL, Evert, Jan ,  FROOM, Simon, Frederick, Thomas

    IPC分类号： C07C67/055 ,  C07C69/01

    CPC分类号： C07C67/055 ,  C07C69/01 ,  C07C69/15

    摘要： The present invention provides a process for the production of an alkenyl carboxylate by reacting an alkene, a carboxylic acid and a molecular oxygen-containing gas in a reaction zone in the presence of a catalyst at an elevated reaction temperature, T, to produce an outlet stream from the reaction zone comprising alkenyl carboxylate and oxygen, and wherein in said process the catalyst is contacted with the alkene, at a partial pressure, P, optionally in the presence of the carboxylic acid, and the outlet stream comprises less than 2vo1 % oxygen, the improvement comprises reducing the partial pressure of the alkene and/or reducing the reaction temperature so as to suppress formation of benzene and/or suppress inhibition of the catalyst.

    VERFAHREN ZUR HERSTELLUNG VON UNGESÄTTIGTEN CARBONSÄUREESTERN
    5.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON UNGESÄTTIGTEN CARBONSÄUREESTERN 有权
    用于生产碳不饱和酯

    公开(公告)号：EP2265568B1

    公开(公告)日：2011-11-02

    申请号：EP09734735.5

    申请日：2009-04-21

    申请人： Wacker Chemie AG

    发明人： WESTERMAYER, Heribert ,  WAGNER, Johann ,  DAFINGER, Willibald ,  HOLL, Peter

    IPC分类号： C07C67/055 ,  C07C69/01 ,  B01J8/02 ,  B01J19/30 ,  B01J19/32

    CPC分类号： C07C67/055 ,  C07C69/01 ,  C07C69/15

    摘要： The invention provides a process for preparing unsaturated carboxylic esters by means of reaction of alkenes having 2 to 6 carbon atoms with alkanecarboxylic acids having 1 to 6 carbon atoms in the presence of an oxygenous gas and in the presence of a heterogeneous noble metal catalyst by means of a continuous homogeneous gas phase process in a reactor, wherein a gaseous phase (cycle gas) is circulated, and the cycle gas is laden with alkanecarboxylic acid in an acid saturator before entry into the reactor, characterized in that, in a presaturator connected upstream of the acid saturator, the cycle gas is laden with a portion of the amount of alkanecarboxylic acid used for saturation, then it is transferred to the acid saturator and laden there with the remaining amount of alkanecarboxylic acid.

    INTEGRATED PROCESS FOR THE MANUFACTURE OF ALKENYL CARBOXYLATES
    7.
    发明公开
    INTEGRATED PROCESS FOR THE MANUFACTURE OF ALKENYL CARBOXYLATES 有权
    集成方法生产烯的

    公开(公告)号：EP1463709A1

    公开(公告)日：2004-10-06

    申请号：EP02805817.0

    申请日：2002-12-04

    申请人： BP Chemicals Limited

    发明人： Clarke, Robert William ,  Roberts, Mark Stephen

    IPC分类号： C07C67/05 ,  C07C69/01 ,  C07C51/215 ,  C07C53/08

    CPC分类号： C07C67/54 ,  C07C5/48 ,  C07C51/215 ,  C07C51/46 ,  C07C67/055 ,  Y02P20/125 ,  Y02P20/582 ,  C07C69/15 ,  C07C53/08 ,  C07C11/04

    摘要： An integrated process for the production of an alkenyl carboxylate, such as vinyl acetate which process comprises the steps of (a) contacting in an oxidation reaction zone a C2 to C4 alkane, such as ethane, a molecular oxygen-containing gas, optionally the corresponding alkene and optionally water, in the presence of a catalyst to produce a stream comprising alkene, carboxylic acid and water; (b) separating at least a portion of the stream from step (a) into a fraction comprising the alkene and a fraction comprising the carboxylic acid and water; (c) contacting in a second reaction zone at least a portion of said alkene fraction produced in step (b), a carboxylic acid and a molecular oxygen-containing gas, in the presence of a catalyst to produce a product stream comprising an alkenyl carboxylate, water and carboxylic acid; (d) separating at least a portion of the product stream from step (c) and at least a portion of the carboxylic acid and water fraction produced in step (b) by azeotropic distillation into an overhead fraction comprising the alkenyl carboxylate and a base fraction comprising the carboxylic acid; (e) recovering the alkenyl carboxylate from the overhead fraction separated in step (d).