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    • 1. 发明授权
      EP0454704B1 PROCESS FOR THE PRODUCTION OF FATTY ALCOHOLS 失效 转让
    • PROCESS FOR THE PRODUCTION OF FATTY ALCOHOLS
    • 用于生产脂肪醇。
    • EP0454704B1
    • 1994-09-28
    • EP90901613.1
    • 1990-01-16
    • DAVY McKEE (LONDON) LIMITED
    • WILMOTT, Martyn , HARRISON, George, Edwin , SCARLETT, John , WOOD, Michael Anthony , McKINLEY, Donald Hugh
    • C07C29/136 , C07C31/125 , C07C67/08 , C07C67/03 , C07C69/24
    • C07C29/177 , C07C29/149 , C07C67/03 , C07C67/08 , C07C31/125 , C07C31/20 , C07C69/24
    • A process is described for producing fatty alcohols. A fatty acid or fatty acid mixture is esterified in a column reactor in which there is a plurality of esterification trays each having a predetermined liquid hold-up and containing a charge of a solid esterification catalyst thereon, e.g. an ion exchange resin containing -SO3H and/or -COOH groups. A liquid phase containing the fatty acid or fatty acid mixture flows down the column reactor from one esterification tray to the next downward one against an upflowing lower alkanol vapour stream, e.g. methanol vapour. Relatively dry lower alkanol vapour (water content not more than 5 mole %) is injected into the bottom of the column reactor. Water of esterification is removed from the top of the column reactor in the vapour stream, whilst ester product is recovered from the sump of the reactor. As the liquid flows down the trays it encounters progressively drier lower alkanol. The ester product recovered from the bottom of the reactor has an ester content of at least 99 mole % (calculated on a lower alkanol free basis). This ester product is then subjected to vapour phase hydrogenation, using typically a reduced copper oxide-zinc oxide catalyst. The resulting mixture contains, in addition to at least about 0.5 mole % up to about 5 mole % of unreacted ester, product fatty alcohol or alcohols and lower alkanol, there being no need to separate the lower alkanol from the ester if the lower alkanol is methanol. This is distilled to yield a fatty alcohol fraction which contains a minor amount of a lower alkyl (e.g. methyl) fatty acid ester or esters. The fatty alcohol fraction is subjected to transesterification to convert substantially all of any lower alkyl ester present to wax ester or esters. The resulting lower alkanol (e.g. methanol) is partially evaporated. Then the intermediate transesterification mixture is distilled to recover fatty alcohols. The residue from this distillation step is mixed with excess lower alkanol and again transesterified to reconvert wax ester or esters to lower alkyl esters. This mixture is re-distilled and the recovered mixture of lower alkanol, methyl fatty acid esters, and fatty alcohol or alcohols can be recycled. If an alkyl titanate is used as transesterification catalyst then both distillation steps can be effected without prior separation of the catalyst and the non volatile residue from the second distillation step can be recycled to the first transesterification step.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 10. 发明公开
      EP0018163A1 Production of butane-1,4-diol 有权
    • Production of butane-1,4-diol
    • Herstellung von Butan-1,4-二醇。
    • EP0018163A1
    • 1980-10-29
    • EP80301131.1
    • 1980-04-09
    • DAVY McKEE (LONDON) LIMITED
    • Harris, Norman , Dennis, Alan James , Harrison, George Edwin
    • C07C31/20 , C07C29/10 , C07C45/50 , C07C41/05
    • C07C43/162 , C07C29/10 , C07C43/15 , C07C45/49 , C07C47/198 , C07C31/207
    • Butane-1,4-diol is produced by converting allyl alcohol to an allyl t-alkyl or -cycloalkyl ether of the general formula:
      wherein R, and R 2 each, independently of the other, represent a C, to C 4 alkyl radical, and R 3 and R 4 each, independently of the other, represent a hydrogen atom or a C 1 to C 3 alkyl radical, or wherein R 1 represents a C, to C 4 alkyl radical, R 2 and R 3 together with the carbon atoms to which they are attached form a 5-membered or 6-membered cycloaliphatic ring, and R 4 represents a hydrogen atom or a C 1 to C 3 alkyl radical, followed by reacting resulting compound of formula (III) under hydroformylation conditions with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst to form a corresponding aldehyde-ether of the general formula.
      reducing resulting aldehyde-ether of the general formula (II) to form a corresponding hydroxy-ether of the general formula:
      and cleavlng resulting hydroxy-ether of the general formula (II) to give butane-1,4-diol. Typically R, and R 2 each represent a methyl group whilst R j and R 4 each represent a hydrogen atom. The alkene of the general formula:
      released upon cleavage of the hydroxy-ether of formula (II) can be recycled for reaction with further allyl alcohol to form a further quantity of the ether of the general formula (III).
    • 丁烷-1,4-二醇是通过将烯丙醇转化为通式为：... 的烯丙基t-烷基或 - 环烷基醚制备的，其中R 1和R 2各自独立地表示C 1至C 4烷基 自由基，R3和R4各自独立。 另一方面，代表氢原子或C 3至C 3烷基，或其中R 1表示C 1至C 4烷基，R 2和R 3与它们所连接的碳原子一起形成5元或6元环， R4代表氢原子或C1-C3烷基，然后在加氢甲酰化催化剂的存在下，在加氢甲酰化条件下使所得的式（III）化合物与一氧化碳和氢气反应形成相应的醛 - 醚 的通式。 ... ...还原所得通式（II）的醛醚形成相应的通式如下的羟基醚：...＆lt; CHEM＆gt; ...并将所得到的一般式-a（II）的羟基醚除去至 得到丁烷-1,4-二醇。 通常，R 1和R 2各自表示甲基，而R 3和R 4各自表示氢原子。 通式的烯烃：
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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