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8 条记录 (耗时 0.011 秒)

    Process for producing methionine
    2.
    发明公开
    Process for producing methionine 失效
    Verfahren zur Herstellung von Methionin

    公开(公告)号：EP0839804A2

    公开(公告)日：1998-05-06

    申请号：EP97117970.0

    申请日：1997-10-16

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Imi, Katsuharu ,  Shiozaki, Tetsuya

    IPC分类号： C07C319/20 ,  C07C323/58

    CPC分类号： C07C319/20 ,  C07C319/28 ,  C07C323/58

    摘要： Methionine is produced in an improved yield while reducing the load of waste water disposal by a process including the steps of:

    (A) adding at least one compound selected from potassium carbonate, potassium bicarbonate and potassium hydroxide to a solution containing 5-(β-methylmercaptoethyl)hydantoin,
    (B) saturating the resulting solution with carbon dioxide gas and separating deposited methionine while leaving a first filtrate behind,
    (C) transferring part or whole of the first filtrate to step (D),
    (D) heating the transferred filtrate, adding a water-miscible solvent to it and saturating it with carbon dioxide gas to deposit methionine and potassium bicarbonate, and separating these deposits while leaving a second filtrate behind, and
    (E) returning the second filtrate to step (A) if desired.

    摘要翻译： 产生甲硫氨酸，同时减少废水处理负荷，包括以下步骤：（A）将至少一种选自碳酸钾，碳酸氢钾和氢氧化钾的化合物加入到含有5-（β- 甲巯基乙基）乙内酰脲，（B）用二氧化碳气体使所得溶液饱和并分离沉积的甲硫氨酸，同时留下第一滤液，（C）将部分或全部第一滤液转移到步骤（D），（D）加热转移的滤液 向其中加入水混溶性溶剂并用二氧化碳气体饱和以沉积甲硫氨酸和碳酸氢钾，并分离这些沉积物，同时留下第二滤液，和（E）如果需要，将第二滤液返回到步骤（A）。

    Process for producing 1,4-dicyano-2-butene and catalyst therefor
    5.
    发明公开
    Process for producing 1,4-dicyano-2-butene and catalyst therefor 失效
    Verfahren zur Herstellung von 1,4-Dicyano-2-Buten und ein Katalysatordafür。

    公开(公告)号：EP0563859A2

    公开(公告)日：1993-10-06

    申请号：EP93105183.3

    申请日：1993-03-29

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Imi, Katsuharu ,  Wake, Shigeo

    IPC分类号： C07C253/16

    CPC分类号： C07C253/16 ,  C07C255/09

    摘要： It is aimed at to produce 1,4-dicyano-2-butene from 2-butene-1,4-diol and/or 3-butene-1,2-diol and hydrogen cyanide with a high reaction velocity and good selectivity.
    2-Butene-1,4-diol and/or 3-butene-1,2-diol are (is) reacted with hydrogen cyanide in the presence of a catalyst comprising a cuprous halide and a non-aromatic organic amine hydrohalide.

    摘要翻译： 目的是以高反应速度和良好的选择性从2-丁烯-1,4-二醇和/或3-丁烯-1,2-二醇和氰化氢生产1,4-二氰基-2-丁烯。 在包含卤化亚铜和非芳族有机胺氢卤酸酯的催化剂存在下，将2-丁烯-1,4-二醇和/或3-丁烯-1,2-二醇与氰化氢反应。

    Method for producing 3-amino-2,2,3-trimethylbutanoate
    6.
    发明公开
    Method for producing 3-amino-2,2,3-trimethylbutanoate 审中-公开
    生产3-氨基-2,2,3-三甲基丁酸酯的方法

    公开(公告)号：EP0962449A2

    公开(公告)日：1999-12-08

    申请号：EP99304387.6

    申请日：1999-06-04

    申请人： Sumitomo Chemical Company, Limited

    发明人： Ogawa, Takeshi ,  Haga, Toru ,  Imi, Katsuharu

    IPC分类号： C07C227/22

    CPC分类号： C07C227/22 ,  C07C229/08

    摘要： The present invention provides a method for producing 3-amino-2,2,3trimethylbutanoate which comprises reacting 3,3,4,4-tetramethylazetidine-2-one with an alcohol in the presence of an acidic compound, which has excellent operability and high yield.

    摘要翻译： 本发明提供一种3-氨基-2,2,3-三甲基丁酸酯的制造方法，其特征在于，在酸性化合物的存在下使3,3,4,4-四甲基氮杂环丁烷-2-酮与醇反应， 产量。

    Method for producing 3,3,4,4-tetramethyl-2-azetidinone
    7.
    发明公开
    Method for producing 3,3,4,4-tetramethyl-2-azetidinone 审中-公开
    Verfahren zur Herstellung von 3,3,4,4-四甲基-2-氮杂环丁酮

    公开(公告)号：EP0957090A1

    公开(公告)日：1999-11-17

    申请号：EP99303723.3

    申请日：1999-05-12

    申请人： Sumitomo Chemical Company, Limited

    发明人： Haga, Toru ,  Imi, Katsuharu ,  Ogawa, Takeshi

    IPC分类号： C07D205/08

    CPC分类号： C07D205/08

    摘要： The present invention provides a method for producing 3,3,4,4-tetramethyl-2-azetidinone comprising removing a chlorosulfonyl group from 1-chlorosulfonyl-3,3,4,4-tetramethyl-2-azetidinone using an alkali compound in the presence of a phase transfer catalyst, which has excellent operability and high yield and provides easy treatment of the waste liquid.

    摘要翻译： 本发明提供一种制备3,3,4,4-四甲基-2-氮杂环丁酮的方法，包括使用碱金属化合物从1-氯磺酰基-3,3,4,4-四甲基-2-氮杂环丁酮中除去氯磺酰基 存在相转移催化剂，其具有优异的可操作性和高产率并且易于处理废液。

    Process for producing methionine
    8.
    发明公开
    Process for producing methionine 失效
    一种生产蛋氨酸的方法

    公开(公告)号：EP0839804A3

    公开(公告)日：1999-04-14

    申请号：EP97117970.0

    申请日：1997-10-16

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Imi, Katsuharu ,  Shiozaki, Tetsuya

    IPC分类号： C07C319/20 ,  C07C323/58

    CPC分类号： C07C319/20 ,  C07C319/28 ,  C07C323/58

    摘要： Methionine is produced in an improved yield while reducing the load of waste water disposal by a process including the steps of:
    (A) adding at least one compound selected from potassium carbonate, potassium bicarbonate and potassium hydroxide to a solution containing 5-(β-methylmercaptoethyl)hydantoin, (B) saturating the resulting solution with carbon dioxide gas and separating deposited methionine while leaving a first filtrate behind, (C) transferring part or whole of the first filtrate to step (D), (D) heating the transferred filtrate, adding a water-miscible solvent to it and saturating it with carbon dioxide gas to deposit methionine and potassium bicarbonate, and separating these deposits while leaving a second filtrate behind, and (E) returning the second filtrate to step (A) if desired.