Process for producing dialkanolamines
    1.
    发明授权
    Process for producing dialkanolamines 有权
    二链烷醇胺的制备方法

    公开(公告)号:US06169207A

    公开(公告)日:2001-01-02

    申请号:US09266785

    申请日:1999-03-12

    IPC分类号: C07C8518

    CPC分类号: C07C213/04 C07C215/12

    摘要: The invention provides a process for producing dialkanolamines through amination of alkylene oxide with ammonia at liquid phase, in which side formation of trialkanolamines is inhibited and dialkanolamines can be produced with high selectivity and high efficiency. Said process is carried out in the presence of a catalyst which possesses such reaction characteristics that render the rate constant &agr; of the reaction between ammonia and alkylene oxide not less than 0.10, when the reaction rate constant between monoalkanolamine and alkylene oxide is 1, and the rate constant &bgr; of the reaction between dialkanolamine and alkylene oxide not more than 0.7, when the reaction rate constant between monoalkanolamine and alkylene oxide is 1.

    摘要翻译: 本发明提供了一种通过在液相中氨化烯化氧与氨的制备二链烷醇胺的方法,其中抑制三烷醇胺的形成和以高选择性和高效率制备二链烷醇胺。 所述方法在具有这样的反应特性的催化剂的存在下进行,所述反应特性使得当烷基醇和环氧烷烃之间的反应速率常数为1时,氨和环氧烷之间的反应的速率常数α不小于0.10, 当单烷醇胺和环氧烷之间的反应速率常数为1时,二烷醇胺和环氧烷之间的反应速率常数β不大于0.7。

    Reaction distillation apparatus and reaction distillation method
    2.
    发明授权
    Reaction distillation apparatus and reaction distillation method 失效
    反应蒸馏装置和反应蒸馏法

    公开(公告)号:US6057470A

    公开(公告)日:2000-05-02

    申请号:US9

    申请日:1998-01-21

    摘要: Reactive distillation equipment applicable to a relatively complicated reaction composed of at least two steps of equilibrium reactions, and a reactive distillation method capable of performing the reaction efficiently. Raw material feeding pipes 5, 6 and 7 are connected to a reactive distillation column 1. The raw material feeding pipes 5, 6 and 7 are disposed on different stages of the reactive distillation column 1 in this order from the top of the column downward. It is preferred that the reactive distillation column 1 includes a stage to which no raw material feeding pipe is connected between a first stage connected to the raw material feeding pipe 5 and a second stage connected to the raw material feeding pipe 6, and between the second stage and a third stage connected to the raw material feeding pipe 7. By feeding raw material (A), raw material (B) and raw material (E) from the raw material feeding pipes 5, 6 and 7, respectively, vapor-liquid contacting of raw materials (A) and (B), and vapor-liquid contacting of product (C) and raw material (E) are carried out.

    摘要翻译: PCT No.PCT / JP97 / 01685 Sec。 371日期1998年1月21日 102(e)日期1998年1月21日PCT提交1997年5月20日PCT公布。 WO97 / 44108 PCT公开号 日期1997年11月27日适用于由至少两个平衡反应步骤组成的相对复杂的反应的反应蒸馏设备和能够有效地进行反应的反应蒸馏方法。 原料供给管5,6和7连接到反应蒸馏塔1.原料供给管5,6和7从塔顶向下依次设置在反应蒸馏塔1的不同阶段。 优选的是,反应蒸馏塔1包括在与原料供给管5连接的第一段和与原料供给管6连接的第二段之间没有原料供给管连接的阶段,以及第二 通过从原料供给管5,6和7分别供给原料(A),原料(B)和原料(E),分别从原料供给管7供给气液 原料(A)和(B)的接触,以及产物(C)和原料(E)的气液接触进行。

    Rare earth supported catalyst useful for preparation of alkanolamines
and process for preparing same
    3.
    发明授权
    Rare earth supported catalyst useful for preparation of alkanolamines and process for preparing same 失效
    用于制备链烷醇胺的稀土担载催化剂及其制备方法

    公开(公告)号:US5880058A

    公开(公告)日:1999-03-09

    申请号:US704244

    申请日:1996-08-28

    CPC分类号: B01J23/10 C07C213/04

    摘要: A process is provided which comprises using a catalyst comprises a rare earth element supported on an inorganic heat-resisting carrier, when a monoethanolamine is selectively prepared by reacting an alkylene oxide with ammonia in a liquid phase. This catalyst has excellent monoalkanolamine selectivity and heat resistance; and therefore, even when the ratio of ammonia to the alkylene oxide is lower compared with cases where other catalysts are used, an equal or more amount of the monoalkanolamine can be formed, and thus the recovery cost of the unreacted ammonia is reduced. Further, since the total amount of the feed raw materials is reduced, apparatuses for the reaction system and recovery system can be made smaller, and thus the cost of equipment is reduced.

    摘要翻译: 提供了一种方法,其包括使用包含负载在无机耐热载体上的稀土元素的催化剂,当通过使环氧烷与氨在液相中反应选择性制备单乙醇胺时。 该催化剂具有优异的单烷醇胺选择性和耐热性; 因此,即使使用氨与环氧烷烃的比例低于其他催化剂的情况,也可以形成等量以上的单链烷醇胺,因此未反应氨的回收成本降低。 此外,由于减少进料原料的总量,因此可以使反应系统和回收系统的装置更小,从而降低设备的成本。

    Process for preparation for alkanolamine, catalyst used in the process
and process for preparation of the catalyst
    4.
    发明授权
    Process for preparation for alkanolamine, catalyst used in the process and process for preparation of the catalyst 失效
    制备链烷醇胺的方法,用于制备催化剂的方法和催化剂的方法

    公开(公告)号:US5599999A

    公开(公告)日:1997-02-04

    申请号:US333329

    申请日:1994-11-02

    CPC分类号: B01J23/10 C07C213/04

    摘要: A process is provided which comprises using a catalyst comprises a rare earth element supported on an inorganic heat-resisting carrier, when a monoethanolamine is selectively prepared by reacting an alkylene oxide with ammonia in a liquid phase. This catalyst has excellent monoalkanolamine selectivity and heat resistance; and therefore, even when the ratio of ammonia to the alkylene oxide is lower compared with cases where other catalysts are used, an equal or more amount of the monoalkanolamine can be formed, and thus the recovery cost of the unreacted ammonia is reduced. Further, since the total amount of the feed raw materials is reduced, apparatuses for the reaction system and recovery system can be made smaller, and thus the cost of equipment is reduced.

    摘要翻译: 提供了一种方法,其包括使用包含负载在无机耐热载体上的稀土元素的催化剂,当通过使环氧烷与氨在液相中反应选择性制备单乙醇胺时。 该催化剂具有优异的单烷醇胺选择性和耐热性; 因此,即使使用氨与环氧烷烃的比例低于其他催化剂的情况,也可以形成等量以上的单链烷醇胺,因此未反应氨的回收成本降低。 此外,由于减少进料原料的总量,因此可以使反应系统和回收系统的装置更小,从而降低设备的成本。

    Process for preparing aromatic carbonic ester
    6.
    发明授权
    Process for preparing aromatic carbonic ester 失效
    制备芳香族碳酸酯的方法

    公开(公告)号:US5874605A

    公开(公告)日:1999-02-23

    申请号:US465

    申请日:1998-02-03

    CPC分类号: C07C68/06 Y02P20/127

    摘要: An aromatic carbonate ester is continuously and efficiently prepared by the transesterification of an aromatic carboxylate with an aliphatic carbonate ester and/or aromatic.aliphatic carbonate ester. A raw material including an aromatic carboxylate, aliphatic carbonate ester and/or aromatic.aliphatic carbonate ester, and a catalyst are continuously fed to a first stage of a reactive distillation column (1) through a raw material feeding pipe (5). Meanwhile, an aliphatic carbonate ester (a) whose boiling point is lower than that of a reactant liquid that is present in a second stage lower than the first stage is continuously fed to the second stage through an aliphatic carbonate ester (a) feeding pipe (6). The second stage is preferably a column bottom section of the reactive distillation column (1). The amount of aliphatic carbonate ester (a) fed is preferably 0.001 to 5 times, by weight, more than the amount of the raw material fed.

    摘要翻译: PCT No.PCT / JP97 / 02000 Sec。 371日期1998年2月3日 102(e)1998年2月3日PCT 1997年6月10日PCT公布。 WO97 / 47586 PCT公开号 日期1997年12月18日芳族羧酸酯与脂族碳酸酯和/或芳族脂族碳酸酯的酯交换连续有效地制备芳族碳酸酯酯。 包含芳族羧酸酯,脂族碳酸酯和/或芳香族脂肪族碳酸酯的催化剂和催化剂通过原料输送管(5)连续供给至反应蒸馏塔(1)的第一阶段。 同时,通过脂肪族碳酸酯(a)进料管(a)向第二阶段连续供给沸点低于第一阶段的第二阶段的反应液的沸点的脂肪族碳酸酯(a) 6)。 第二阶段优选为反应蒸馏塔(1)的塔底部分。 进料的脂肪族碳酸酯(a)的量优选为进料原料量的0.001〜5倍。

    Process for preparing carbonate esters
    7.
    发明授权
    Process for preparing carbonate esters 失效
    制备碳酸酯的方法

    公开(公告)号:US5543546A

    公开(公告)日:1996-08-06

    申请号:US443753

    申请日:1995-05-18

    IPC分类号: B01D3/00 B01J19/18 C07C68/06

    摘要: Carboxylate (1) of the formula R.sup.1 COOR.sup.2 (where each of R.sup.1 and R.sup.2 independently represents an alkyl group, an alicyclic hydrocarbon group or an aryl alkyl group), an aromatic hydroxy compound of the formula R.sup.3 OH (where R.sup.3 represents an aromatic group with or without a substituent), and a catalyst are supplied to a batch reactor 1, and a transesterification between the carboxylate (1) and the aromatic hydroxy compound is performed to produce carboxylate (3) of the formula R.sup.1 COOR.sup.3 (where R.sup.1 and R.sup.3 are as defined above). After distilling off the by-produced alcohol and unreacted compounds using a distillation column 2, carbonate ester (4) of the formula R.sup.4 O--COOR.sup.5 (where each of R.sup.4 and R.sup.5 independently represents an alkyl group, an alicyclic hydrocarbon group or an aryl alkyl group) is supplied to the batch reactor 1. Then, a transesterification between the carboxylate (3) and the carbonate ester (4) is performed to produce carbonate ester (5) of the formula R.sup.3 O--COOR.sup.6 (where R.sup.3 is as defined above, and R.sup.6 is a substituent selected from the group consisting of R.sup.3, R.sup.4 and R.sup.5). This process enables efficient preparation of carbonate esters.

    摘要翻译: 式R1COOR2的羧酸酯(1)(其中R 1和R 2各自独立地表示烷基,脂环族烃基或芳基烷基),式R 3 OH的芳族羟基化合物(其中R 3表示具有或不具有 取代基),将催化剂供给到间歇式反应器1中,并进行羧酸酯(1)与芳族羟基化合物之间的酯交换反应,生成式R 1 COOR 3的羧酸酯(3)(其中R 1和R 3如上所定义) )。 使用蒸馏塔2蒸馏出副产物醇和未反应化合物后,式R4O-COOR5(其中R4和R5各自独立地表示烷基,脂环族烃基或芳基烷基)的式(4) )供给到间歇反应器1.然后,进行羧酸酯(3)和碳酸酯(4)之间的酯交换以制备式R3O-COOR6的碳酸酯(5)(其中R3如上定义,和 R6是选自R3,R4和R5的取代基)。 该方法可有效制备碳酸酯。

    Method for producing α-hydroxycarboxylate
    8.
    发明授权
    Method for producing α-hydroxycarboxylate 有权
    α-羟基羧酸盐的制备方法

    公开(公告)号:US07122698B2

    公开(公告)日:2006-10-17

    申请号:US10680919

    申请日:2003-10-08

    IPC分类号: C07C69/66

    CPC分类号: C07C67/40 C07C69/675

    摘要: The present invention provides a process for more efficiently producing an α-hydroxycarboxylic acid ester wherein side reactions due to the α-hydroxycarboxylic acid ester are inhibited or prevented in comparison with prior art production processes.The invention provides a process for producing an α-hydroxycarboxylic acid ester comprising Steps 1 to 3:Step 1. reacting, in the presence of oxygen, (i) a 1,2-diol with a 1,2-diol or (ii) a 1,2-diol with an alcohol to obtain a reaction product containing an α-hydroxycarboxylic acid ester;Step 2. separating the α-hydroxycarboxylic acid ester from the reaction product obtained in Step 1 by distillation under reduced pressure; andStep 3. feeding Step 1 with a mixture obtained by partially or entirely removing water from the reaction product, wherein the mixture contains an unreacted 1,2-diol and/or alcohol.

    摘要翻译: 本发明提供了一种更有效地制备α-羟基羧酸酯的方法,其中与现有技术的制备方法相比,由于α-羟基羧酸酯的副反应被抑制或被阻止。 本发明提供了一种制备α-羟基羧酸酯的方法,其包括步骤1至3:步骤1,在氧的存在下,(i)1,2-二醇与1,2-二醇或(ii) 具有醇的1,2-二醇以获得含有α-羟基羧酸酯的反应产物; 步骤2.通过减压蒸馏从步骤1中获得的反应产物中分离α-羟基羧酸酯; 和步骤3.向通过部分或全部从反应产物中除去水而获得的混合物进料步骤1,其中混合物含有未反应的1,2-二醇和/或醇。

    Method for producing alpha - hydroxycarboxylate
    9.
    发明申请
    Method for producing alpha - hydroxycarboxylate 有权
    α-羟基羧酸盐的制备方法

    公开(公告)号:US20050090686A1

    公开(公告)日:2005-04-28

    申请号:US10680919

    申请日:2003-10-08

    IPC分类号: C07C67/40 C07C69/66

    CPC分类号: C07C67/40 C07C69/675

    摘要: The present invention provides a process for more efficiently producing an α-hydroxycarboxylic acid ester wherein side reactions due to the α-hydroxycarboxylic acid ester are inhibited or prevented in comparison with prior art production processes. The invention provides a process for producing an α-hydroxycarboxylic acid ester comprising Steps 1 to 3: Step 1. reacting, in the presence of oxygen, (i) a 1,2-diol with a 1,2-diol or (ii) a 1,2-diol with an alcohol to obtain a reaction product containing an α-hydroxycarboxylic acid ester; Step 2. separating the α-hydroxycarboxylic acid ester from the reaction product obtained in Step 1 by distillation under reduced pressure; and Step 3. feeding Step 1 with a mixture obtained by partially or entirely removing water from the reaction product, wherein the mixture contains an unreacted 1,2-diol and/or alcohol.

    摘要翻译: 本发明提供了一种更有效地制备α-羟基羧酸酯的方法,其中与现有技术的制备方法相比,由于α-羟基羧酸酯的副反应被抑制或被阻止。 本发明提供了一种制备α-羟基羧酸酯的方法,其包括步骤1至3:步骤1,在氧的存在下,(i)1,2-二醇与1,2-二醇或(ii) 具有醇的1,2-二醇以获得含有α-羟基羧酸酯的反应产物; 步骤2.通过减压蒸馏从步骤1中获得的反应产物中分离α-羟基羧酸酯; 和步骤3.向通过部分或全部从反应产物中除去水而获得的混合物进料步骤1,其中混合物含有未反应的1,2-二醇和/或醇。