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    Purification process for arylcarboxylic acids
    4.
    发明公开
    Purification process for arylcarboxylic acids 失效
    ReinigungsverfahrenfürArylcarbonsäuren

    公开(公告)号：EP1229014A1

    公开(公告)日：2002-08-07

    申请号：EP02002018.6

    申请日：1998-01-08

    申请人： ALBEMARLE CORPORATION

    发明人： Lin, Ronny W. ,  Herndon, Robert C. ,  Allen, Robert H. ,  Chockalingham, Kannappan ,  Focht, Gary D.

    IPC分类号： C07C51/487

    CPC分类号： C07C51/487 ,  C07B37/04 ,  C07C41/30 ,  C07C41/34 ,  C07C51/14 ,  C07C51/412 ,  C07C51/42 ,  C07C57/58 ,  C07C59/68 ,  C07C59/64 ,  C07C59/84 ,  C07C57/30 ,  C07C59/58 ,  C07C43/215

    摘要： The application relates to a process which comprises:

    A) forming a reaction product composition comprising arylcarboxylic acid or substituted arylcarboxylic acid in a polar organic solvent medium by palladium-catalyzed hydrocarboxylation of an arylolefin or substituted arylolefin in a liquid medium comprising polar organic solvent, water, HCl, and at least one ether;
    B) mixing with said reaction product composition an aqueous solution of inorganic base to form a mixture comprising an aqueous phase containing dissolved inorganic salt of said arylcarboxylic acid or substituted arylcarboxylic, and before and/or during and/or after such mixing, distilling a substantial portion of the ether from the reaction mixture, such that a mixture of residual organic phase and such aqueous phase remain as a distillation residue;
    C) separating the phases from each other;
    D) distilling residual organic impurities from the aqueous phase and providing an aqueous solution having a concentration in the range of 10 and 35 wt%, by, if necessary, adjusting the concentration of such aqueous solution by removal therefrom or addition thereto of water;
    E) washing the aqueous solution with non-polar organic solvent at least twice;
    F) mixing non-oxidizing mineral acid with the aqueous phase in the presence of non-polar liquid solvent to form (i) an organic phase composed of a solution of arylcarboxylic acid or substituted arylcarboxylic acid in non-polar liquid organic solvent and (ii) an aqueous phase;
    G) separating the phases from each other; and
    H) crystallizing arylcarboxylic acid or substituted arylcarboxylic acid from organic solvent.

    摘要翻译： 本申请涉及一种方法，其包括：A）在极性有机溶剂介质中通过在含极性有机溶剂，水的液体介质中通过钯催化的芳基烯烃或取代的芳烃烯烃的加氢羧化形成包含芳基羧酸或取代的芳基羧酸的反应产物组合物 ，HCl和至少一种醚; B）与所述反应产物组合物混合无机碱的水溶液以形成包含含有所述芳基羧酸或取代的芳基羧酸的溶解的无机盐的水相的混合物，并且在该混合之前和/或之前和/或之后，蒸馏大量 部分的乙醚从反应混合物中，使残余有机相和这种水相的混合物保留为蒸馏残余物; C）将相分离; D）从水相中蒸馏残留的有机杂质，并提供浓度在10和35重量％范围内的水溶液，如果需要的话，通过除去水或其加入水来调节该水溶液的浓度; E）用非极性有机溶剂洗涤水溶液至少两次; F）在非极性液体溶剂的存在下将非氧化性无机酸与水相混合以形成（i）由非极性液体有机溶剂中的芳基羧酸或取代的芳基羧酸的溶液组成的有机相和（ii） ）水相; G）将相分离; 和H）从有机溶剂中结晶芳基羧酸或取代的芳基羧酸。

    Preparation of linear alpha-olefins by a modified chain growth process
    7.
    发明公开
    Preparation of linear alpha-olefins by a modified chain growth process 失效
    一种用于通过改进的链生长方法来制备线性α-烯烃的方法。

    公开(公告)号：EP0602565A1

    公开(公告)日：1994-06-22

    申请号：EP93119973.1

    申请日：1993-12-10

    申请人： ALBEMARLE CORPORATION

    发明人： Lin, Ronny W. ,  Allen, Robert H. ,  Hu, John N. ,  Overstreet, Andrew D. ,  Smith, Daniel K.

    IPC分类号： C07C11/02 ,  C07C2/88

    CPC分类号： C07C2/88 ,  Y02P20/52 ,  C07C11/02

    摘要： Linear alpha-olefin products which are enriched in one or more olefins of a selected carbon number are prepared by an ethylene chain growth process starting with a trialkylaluminum compound represented by the formula AlR₃, in which each R group contains 3 to 10 carbon atoms, adding an average number of ethylene units to the R groups so as to form aluminum alkyls which are enriched in R groups having the selected carbon number, recovering the alpha-olefin products from the aluminum alkyls by catalyzed alkyl displacement, and recycling the trialkylaluminum product of the displacement to the chain growth reaction.

    摘要翻译： 这是在所选择的碳原子数的一种或多种烯烃富集的直链α-烯烃产物，通过在乙烯链增长方法制备开始与由分子式为AlR 3表示的三烷基铝化合物，其中每个R基团含有3至10个碳原子，并补充 平均数目的乙烯单元的R基团，以便形成其在具有所选择的碳原子数的R基团富集的烷基铝，回收来自催化烷基位移的烷基铝的α-烯烃的产品，并回收的三烷基铝产品 位移到链增长反应。