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    PROCESS FOR THE PREPARATION OF ALKANEDIOL
    2.
    发明公开
    PROCESS FOR THE PREPARATION OF ALKANEDIOL 审中-公开
    用于生产烷基二醇

    公开(公告)号：EP1986984A1

    公开(公告)日：2008-11-05

    申请号：EP07704654.8

    申请日：2007-02-20

    申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ

    发明人： VAN DER HEIDE, Evert ,  VROUWENVELDER, Cornelis, Leonardo, Maria

    IPC分类号： C07C31/20 ,  C07C29/12

    CPC分类号： C07C29/12 ,  C07C68/065 ,  C07C31/202 ,  C07C31/205 ,  C07C69/96

    摘要： The invention pertains to a process for the preparation of alkanediol comprising the steps: (i) contacting alkylene oxide with carbon dioxide in the presence of a carbonation catalyst to obtain a reaction mixture containing alkylene carbonate at a reaction temperature of from 100 to 200 °C; (ii) contacting the reaction mixture obtained in step (i) with R-OH, in which R is hydrogen or an alkyl group in the presence of a catalyst to obtain a reaction mixture containing alkanediol and R2CO3; (iii) subjecting the mixture containing alkanediol and R2CO3 to a separation step to yield a crude alkanediol stream, which is subjected to distillation to yield a purified stream of alkanediol as the bottom stream; (iv) subjecting the purified stream of alkanediol obtained in step (iii) to further distillation to obtain a bottom stream containing a mixture of alkanediol, heavy components, and optionally carbonation catalyst, and a top stream containing high purity alkanediol; wherein at least part of the reaction mixture obtained in step (i) is used for heat exchange with at least part of the crude alkanediol stream and/or with at least part of the purified alkanediol stream.

    VERFAHREN ZUR HERSTELLUNG VON SUBSTITUIERTEN DIAMANTANEN
    3.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON SUBSTITUIERTEN DIAMANTANEN 有权
    用于生产取代diamantanes

    公开(公告)号：EP1960330A2

    公开(公告)日：2008-08-27

    申请号：EP06828601.2

    申请日：2006-12-04

    申请人： Justus-Liebig-Universität Giessen

    发明人： SCHREINER, Peter, R. ,  FOKIN, Andrey, A.

    IPC分类号： C07C13/615 ,  C07C23/46

    CPC分类号： C07C203/08 ,  C07C29/12 ,  C07C51/353 ,  C07C67/11 ,  C07C2603/90 ,  C07C35/44 ,  C07C61/135 ,  C07C69/013 ,  C07C69/14

    摘要： The invention relates to at least dinitroxylated diamantanes, and to methods by which means a high yield and selectivity of substituted diamantanes can be produced. According to the invention, dinitroxylated diamantanes can be reacted with nucleophiles to form the corresponding disubstituted diamantanes. Surprisingly, it was discovered that at least dinitroxylated or hydroxylated diamantanes are rearranged in the presence of a strong acid, creating at least 4,9-nitroxylated or hydroxylated diamantanes. On the basis of this, 4,9-substituted diamantanes can be produced in a targeted manner by reaction with other nucleophiles. The inventive methods for producing at least disubstituted diamantanes consist of the following steps: a) at least dinitroxylation, followed by substitution of all of the nitroxy groups with a nucleophile, or b) at least dinitroxylation, then rearrangement in the presence of a strong acid, all nitroxy groups being replaced by a nucleophile in the event of a successful rearrangement, or c) at least dinitroxylation, followed by a reaction with water (as nucleophile), and rearrangement of the at least dihydroxylated compound in the presence of a strong acid, all hydroxy groups being replaced by another nucleophile in the event of a successful rearrangement.

    Ethylene glycol process
    7.
    发明公开
    Ethylene glycol process 失效
    乙二醇工艺

    公开(公告)号：EP0776890A2

    公开(公告)日：1997-06-04

    申请号：EP96119181.4

    申请日：1996-11-29

    申请人： Mitsubishi Chemical Corporation

    发明人： Kawabe, Kazuki, c/o Mitsubishi Chemical Corp. ,  Murata, Kazuhiko, c/o Mitsubishi Chemical Corp. ,  Furuya, Toshiyuki, c/o Mitsubishi Chemical Corp.

    IPC分类号： C07D317/38 ,  C07C29/12 ,  C07C31/20

    CPC分类号： C07C29/12 ,  C07D317/38 ,  C07C31/202

    摘要： The present invention relates to a process for producing ethylene glycol from ethylene oxide wherein ethylene oxide in a gas resulting from oxidation of ethylene is absorbed in a specific absorbing solution, is allowed to react with carbon dioxide, converted into ethylene carbonate, and then subjected to hydrolysis to produce ethylene glycol.
    According to the present invention, a large energy consuming step such as stripping of ethylene oxide and separation of excess amounts of water during the ethylene glycol production becomes unnecessary and the process can be greatly simplified by combining the ethylene oxide absorption step and the carbonation step.

    摘要翻译： 本发明涉及一种由环氧乙烷生产乙二醇的方法，其中由乙烯氧化得到的气体中的环氧乙烷被吸收到特定的吸收溶液中，与二氧化碳反应，转化成碳酸亚乙酯，然后经受 水解生成乙二醇。 根据本发明，在乙二醇生产过程中，不需要大量的能量消耗步骤，例如汽提环氧乙烷和分离过量的水，并且通过组合环氧乙烷吸收步骤和碳酸化步骤，可以大大简化该过程。