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    Process for the production of isopropenyl methyl ether
    1.
    发明授权
    Process for the production of isopropenyl methyl ether 失效
    异丙烯基甲基醚的制备方法

    公开(公告)号：US06566559B2

    公开(公告)日：2003-05-20

    申请号：US09871000

    申请日：2001-06-01

    申请人： Steffen Krill ,  Stephan Kretz ,  Volker Häfner ,  Georg Markowz

    发明人： Steffen Krill ,  Stephan Kretz ,  Volker Häfner ,  Georg Markowz

    IPC分类号： C07C4128

    CPC分类号： C07C41/38 ,  C07C41/28 ,  C07C43/15

    摘要： Process for the production of unsaturated ethers, in particular isopropenyl methyl ether (IPM), by pyrolysis of a ketal-containing or acetal-containing mixture, in particular dimethoxypropane (DMP), in the liquid phase in the presence of an organic carboxylic acid, according to the following reaction scheme: wherein R1=H or alkyl with 1-8 C atoms; R2=H, CH3—, C2H5—, or Cl—; R3=alkyl with 1-8 C atoms; R4=H, CH3—, C2H5—, or C3H7—, and R1 and R4 may be joined to form a 5-, 6-, or 7-membered ring. DMP is produced by the process from acetone and methanol by reaction in an acidic heterogeneous ion exchanger, the product being isolated by extraction with aqueous alkaline solution. In particular the process involves combining the IPM reaction product with the DMP reaction product, which permits the execution of a stable recycling process in which the methanol-containing streams of the IPM and DMP stages can be simultaneously extracted. The product may be isolated by the process by simple distillation of IPM from a mixture containing IPM, DMP and acetone.

    摘要翻译： 通过在有机羧酸的存在下在液相中热解含缩酮或含缩醛的混合物，特别是二甲氧基丙烷（DMP），生产不饱和醚，特别是异丙烯基甲基醚（IPM）的方法， 根据以下反应方案：其中R1 = H或具有1-8个C原子的烷基; R2 = H，CH3-，C2H5-或Cl-; R3 =具有1-8个C原子的烷基; R 4 = H，CH 3 - ，C 2 H 5 - 或C 3 H 7 - ，并且R 1和R 4可以连接形成5-，6-或7-元环。 通过在酸性异质离子交换剂中反应，通过丙酮和甲醇的方法制备DMP，产物通过碱性水溶液萃取分离。 特别地，该方法包括将IPM反应产物与DMP反应产物组合，这允许执行稳定的再循环过程，其中可以同时萃取IPM和DMP阶段的含甲醇流。 通过从含有IPM，DMP和丙酮的混合物中简单蒸馏IPM可以通过该方法分离产物。

    PROCESS FOR PREPARING TRIALLYL CYANURATE
    2.
    发明申请
    PROCESS FOR PREPARING TRIALLYL CYANURATE 审中-公开
    制备三氰基化合物的方法

    公开(公告)号：US20090192309A1

    公开(公告)日：2009-07-30

    申请号：US12309399

    申请日：2007-06-25

    申请人： Volker Häfner ,  Helmut Suchsland ,  Peter Werle

    发明人： Volker Häfner ,  Helmut Suchsland ,  Peter Werle

    IPC分类号： C07D251/34

    CPC分类号： C07D251/34

    摘要： The invention relates to an improved process for preparing triallyl cyanurate (TAC) by reacting cyanuric chloride with allyl alcohol in the presence of an alkali metal acid acceptor and in the absence of an organic solvent other than allyl alcohol. According to the invention, TAC is obtained in over 99% purity with an APHA colour number below 10 in a yield of over 90% when 3.9 to 6.0 mol of allyl alcohol and 3.0 to 3.2 equivalents of acid acceptor are used per mole of cyanuric chloride, cyanuric chloride and acid acceptor are added simultaneously or successively to anhydrous or at least 50% by weight aqueous allyl alcohol, and the reaction is performed in one or more stages at a temperature in the range of −5 to +50° C.

    摘要翻译： 本发明涉及通过在碱金属酸受体的存在下和不存在除烯丙醇以外的有机溶剂的情况下使氰尿酰氯与烯丙醇反应制备三烯丙基氰脲酸酯（TAC）的改进方法。 根据本发明，当每摩尔氰尿酰氯使用3.9至6.0摩尔烯丙醇和3.0至3.2当量酸受体时，获得超过99％纯度的TAC，其APHA色数低于10，产率超过90％ ，氰尿酰氯和酸受体同时或依次加入到无水或至少50重量％的烯丙基水溶液中，并且反应在-5至+ 50℃的温度下在一个或多个阶段进行。