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    Preparation of caprolactam from 6-aminocapronitrile
    81.
    发明授权
    Preparation of caprolactam from 6-aminocapronitrile 失效
    从6-氨基己腈制备己内酰胺

    公开(公告)号：US5693793A

    公开(公告)日：1997-12-02

    申请号：US707476

    申请日：1996-09-05

    Applicant: Josef Ritz ,  Eberhard Fuchs ,  Guido Voit ,  Gunther Achhammer ,  Rolf Fischer

    Inventor： Josef Ritz ,  Eberhard Fuchs ,  Guido Voit ,  Gunther Achhammer ,  Rolf Fischer

    IPC: C07C231/06 ,  C07C237/06 ,  C07C253/00 ,  C07C255/24 ,  C07D201/08 ,  C07D201/12 ,  C07D201/16

    CPC classification number: C07D201/12 ,  C07D201/08

    Abstract: A process for preparing caprolactam by cyclization of 6-aminocapronitrile in the presence of water at elevated temperature and in the presence or absence of a catalyst and a solvent, comprises a) removing from the cyclization reaction effluent ("reaction effluent I") caprolactam and all components boiling higher than caprolactam ("high boilers"), b) treating the high boilers of stage a) with phosphoric acid and/or polyphosphoric acid at from 200 to 350.degree. C. to obtain a reaction effluent II, and c) removing caprolactam formed and any 6-aminocapronitrile from reaction effluent II of stage b) to obtain separation from unconverted high boilers and acid used.

    Abstract translation: 在高温存在下和在存在或不存在催化剂和溶剂的情况下，通过6-氨基己腈的环化制备己内酰胺的方法包括：a）从环化反应流出物（“反应流出物I”）中除去己内酰胺和 所有组分沸点高于己内酰胺（“高锅炉”），b）用磷酸和/或多磷酸在200至350℃下处理阶段a）的高锅炉以获得反应流出物II，和c）除去 己内酰胺和来自阶段b）的反应流出物II的任何6-氨基己腈得到与未转化的高锅炉和酸的分离。

    Preparation of caoprolactam
    82.
    发明授权
    Preparation of caoprolactam 失效
    己内酰胺的制备

    公开(公告)号：US5646277A

    公开(公告)日：1997-07-08

    申请号：US646278

    申请日：1996-05-16

    Applicant: Eberhard Fuchs ,  Tom Witzel

    Inventor： Eberhard Fuchs ,  Tom Witzel

    IPC: C07D223/10 ,  C07D201/08

    CPC classification number: C07D201/08

    Abstract: Cyclic lactams are prepared by reacting amino carbonitriles with water in liquid phase in a fixed bed reactor in the presence of heterogeneous catalysts which have no soluble constituents under the reaction conditions.

    Abstract translation: PCT No.PCT / EP94 / 03782 Sec。 371日期：1996年5月16日 102（e）日期1996年5月16日PCT 1994年11月15日PCT PCT。 公开号WO95 / 14665 日期1995年6月1日环己内酰胺是通过在固相床反应器中在液相中使氨基碳腈与水在反应条件下不溶于成分的非均相催化剂存在下制备的。

    Preparation of caprolactam from 6-aminocaproic acid, esters and amides
    83.
    发明授权
    Preparation of caprolactam from 6-aminocaproic acid, esters and amides 失效
    从6-氨基己酸，酯和酰胺制备己内酰胺

    公开(公告)号：US4767856A

    公开(公告)日：1988-08-30

    申请号：US133274

    申请日：1987-12-15

    Applicant: Toni Dockner ,  Manfred Sauerwald ,  Rolf Fischer ,  Hans-Martin Hutmacher ,  Claus-Ulrich Priester ,  Uwe Vagt

    Inventor： Toni Dockner ,  Manfred Sauerwald ,  Rolf Fischer ,  Hans-Martin Hutmacher ,  Claus-Ulrich Priester ,  Uwe Vagt

    IPC: C07D201/08 ,  C07D201/16

    CPC classification number: C07D201/08

    Abstract: In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolactam, the improvement comprises using as the reaction medium a hydrocarbon, maintaining a temperature of from 150.degree. to 350.degree. C., charging the 6-aminocaproic acid, ester, amide or mixture thereof at a rate commensurate with their rate of conversion, and separating caprolactam from the reaction mixture at a rate commensurate with its rate of formation.

    Abstract translation: 在通过在反应条件下为液体并且沸点高于己内酰胺的惰性反应介质的惰性反应介质的存在下加热6-氨基己酸，酯或酰胺或其混合物来制备己内酰胺的改进方法中，改进包括使用 作为反应介质，将烃保持在150℃至350℃的温度下，以与其转化速率相称的速率加入6-氨基己酸，酯，酰胺或其混合物，并将己内酰胺与反应混合物分离 其速度与其形成速度相称。

    Catalyst for the production of pyrrolidone
    84.
    发明授权
    Catalyst for the production of pyrrolidone 失效
    用于生产吡咯烷酮的催化剂

    公开(公告)号：US4263175A

    公开(公告)日：1981-04-21

    申请号：US129155

    申请日：1980-03-10

    Applicant: Frederick A. Pesa ,  Anne M. Graham

    Inventor： Frederick A. Pesa ,  Anne M. Graham

    IPC: B01J23/89 ,  C07D201/08 ,  B01J23/60 ,  B01J23/80

    CPC classification number: C07D201/08 ,  B01J23/89

    Abstract: Five-membered nitrogen-containing saturated heterocyclic compounds, e.g. pyrrolidone, can be prepared by the catalytic hydrogenation/amination of a five-membered heterocyclic anhydride or the corresponding acid. This reaction proceeds with high yields and selectivities when it is conducted in the presence of complex catalysts containing ruthenium.

    Abstract translation: 五元含氮饱和杂环化合物，例如 吡咯烷酮，可以通过催化氢化/胺化五元杂环酸酐或相应的酸来制备。 当在含有钌的络合催化剂存在下进行时，该反应以高产率和选择性进行。

    2-Pyrrolidone production
    85.
    发明授权
    2-Pyrrolidone production 失效
    2-吡咯烷酮生产

    公开(公告)号：US4181662A

    公开(公告)日：1980-01-01

    申请号：US891430

    申请日：1978-03-29

    Applicant: W. Alan Sweeney

    Inventor： W. Alan Sweeney

    IPC: C07D201/08 ,  C07D207/26

    CPC classification number: C07D201/08

    Abstract: A process for production of 2-pyrrolidone which comprises (a) contacting succinonitrile with water at a temperature between 150.degree. and 300.degree. C. and a pressure between 50 and 10,000 psig to thereby hydrolyze succinonitrile and (b) contacting the hydrolyzed succinonitrile with hydrogen in the presence of a heterogeneous hydrogenation catalyst and at a temperature between 200.degree. and 300.degree. C. and a pressure between 100 and 10,000 psig to thereby obtain 2-pyrrolidone.

    Abstract translation: 一种制备2-吡咯烷酮的方法，其包括（a）在150-300℃的温度和50至10,000psig之间的压力下使丁腈腈与水接触，从而水解琥珀腈和（b）使水解的琥珀腈与氢气接触 在非均相加氢催化剂的存在下，在200-300℃的温度和100至10,000psig之间的压力下，由此得到2-吡咯烷酮。

    Preparation of butyrolactam and valerolactam
    87.
    发明授权
    Preparation of butyrolactam and valerolactam 失效
    丁酸和戊酸酯的制备

    公开(公告)号：US3745164A

    公开(公告)日：1973-07-10

    申请号：US3745164D

    申请日：1971-07-27

    Applicant: DU PONT CANADA

    Inventor： ADAMEK E

    IPC: C07D201/08 ,  C07D211/76 ,  C07D27/08

    CPC classification number: C07D201/08 ,  C07D211/76

    Abstract: THE MANUFACTURE OF THE LACTAMS CONTAINING 4 OR 5 CARBON ATOMS (4-BUTYROLACTAM AND 5-VALEROLACTAM) IN WHICH SUCCINIMIDE AND GLUTARIMIDE, OR MIXTURES THEREOF, ARE REACTED WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST AT A PRESSURE OF ABOUT FROM 1 TO 1000 ATOMSPHERES AND AT A TEMPERATURE OF ABOUT FROM 230 TO 300* C. IN THE ABSENCE OF A SOLVENT, AND ISOLATING THE LACTAMS FORMED.

    Process for producing 2-pyrrolidinones
    89.
    发明授权
    Process for producing 2-pyrrolidinones 失效
    生产2-吡咯烷酮的方法

    公开(公告)号：US3567736A

    公开(公告)日：1971-03-02

    申请号：US3567736D

    申请日：1967-12-18

    Applicant: TEXACO INC

    Inventor： LARKIN JOHN M ,  KREUZ KENNETH L

    IPC: C07D201/08 ,  C07D27/08

    CPC classification number: C07D201/08

    Abstract: A METHOD FOR PREPARING A 2-PYRROLIDINONE BY CONTACTING A DINITROALCOHOL HAVING AT LEAST 5 CARBON ATOMS CORRESPONDING TO THE FORMULA:

    R-C(-R1)(-NO2)-C(-R2)(-R3)-C(-R4)(-R5)-CH(-OH)-

    C(-R6)(-NO2)-R7

    WITH AN ACIDIC OXIDIZING AGENT AT A PH NOT EXCEEDING 4 THEREBY FORMING A 4-NITROALKANOIC ACID OF THE FORMULA:

    R-C(-R1)(-NO2)-C(-R2)(-R3)-C(-R4)(-R5)-COOH

    AND THEREAFTER HYDROGENATING THE 4-NITROALKANOIC ACID IN AN ALCOHOLIC MEDIUM IN THE PRESENCE OF A MINOR AMOUNT OF A MINERAL ACID AND A HYDROGENATION CATALYST PREFERABLY SELECTED FROM THE GROUPS OF PLATINUM METALS AT TEMPERATURES RANGING FROM ABOUT 20 TO 200*C. AND UNDER HYDROGEN PRESSURES OF FROM 1 TO 100 ATMOSPHERES. THE 2-PYRROLIDINONES CONTEMPLATED CORRESPOND TO THE FORMULA:

    2-R,2-R1,3-R2,3-R3,4-R4,4-R5-PYRROLIDIN-5-ONE

    AND ARE USEFUL AS SOLVENTS FOR POLYMERS, INSECTICIDES AND PETROLEUM PROCESSING AND SEPARATION; AS PLASTICIZERS FOR ACRYLIC POLYMERS AND COPOLYMERS; AND AS DECOLORIZING AGENTS.

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