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    Process for producing cyanovaleric esters and caprolactam
    31.
    发明授权
    Process for producing cyanovaleric esters and caprolactam 失效
    制备氰戊酸酯和己内酰胺的方法

    公开(公告)号：US4470928A

    公开(公告)日：1984-09-11

    申请号：US420883

    申请日：1982-09-21

    Applicant: Kohji Kimura ,  Toshiro Isoya

    Inventor： Kohji Kimura ,  Toshiro Isoya

    IPC: C07D201/02 ,  C07D201/08 ,  C07D223/08 ,  C07D223/10 ,  C07C120/00 ,  C07C121/16 ,  C07C121/407

    CPC classification number: C07C255/00 ,  C07D201/08 ,  Y02P20/52

    Abstract: Caprolactam can be produced with an economical advantage without formation of by-products in a high yield by subjecting adipic acid and adiponitrile to interchange reaction at an elevated temperature, adding an alcohol directly to the interchange reaction mixture without isolating the resulting cyanovaleric acid to esterify the cyanovaleric acid with said alcohol into a cyanovaleric ester, reducing the cyanovaleric ester with a catalyst into an aminocaproic ester, heating the aminocaproic ester in a polyhydric alcohol having a higher boiling point than that of caprolactam to convert the ester into caprolactam, isolating the caprolactam by distillation and recycling the liquid distillation residue to the system for heating said polyhydric alcohol and said aminocaproic ester.

    Abstract translation: 可以生产具有经济优势的己内酰胺，而不会通过使己二酸和己二腈在升高的温度下进行交换反应而以高产率形成副产物，直接向交换反应混合物中加入醇，而不分离得到的氰基戊酸酯化 将氰基戊酸与所述醇反应成氰基戊酸酯，用催化剂将氰基戊酸酯还原成氨基己酸酯，加热沸点高于己内酰胺的多元醇中的氨基己酸酯将酯转化为己内酰胺，将己内酰胺转化为己内酰胺 蒸馏并将液体蒸馏残余物再循环到用于加热所述多元醇和所述氨基己酸酯的体系中。

    Process for preparing 2-pyrrolidone
    33.
    发明授权
    Process for preparing 2-pyrrolidone 失效
    制备2-吡咯烷酮的方法

    公开(公告)号：US4193925A

    公开(公告)日：1980-03-18

    申请号：US4474

    申请日：1979-01-18

    Applicant: Peter J. N. Meijer ,  Johannes G. M. Nieuwkamp

    Inventor： Peter J. N. Meijer ,  Johannes G. M. Nieuwkamp

    IPC: C07D207/263 ,  C07D201/08 ,  C07D207/26 ,  C07D207/267 ,  C07D207/38

    CPC classification number: C07D207/267 ,  C07D201/08

    Abstract: An improved process for the preparation of 2-pyrrolidone by the liquid phase hydrogenation of succinonitrile in the presence of a hydrogenation catalyst and ammonia, whereafter the resulting hydrogenation product is hydrolyzed with water. A hydrogenation catalyst in the form of a fixed bed is used, and a liquid phase of succinonitrile and liquid ammonia is passed over the catalyst at a temperature of between 50.degree. and 130.degree. C.

    Abstract translation: 通过在加氢催化剂和氨的存在下丁二腈的液相氢化制备2-吡咯烷酮的改进方法，之后所得的氢化产物用水水解。 使用固定床形式的氢化催化剂，在50-130℃的温度下使琥珀腈和液氨的液相通过催化剂。

    Process for producing 2-pyrrolidone
    34.
    发明授权
    Process for producing 2-pyrrolidone 失效
    2-吡咯烷酮生产方法

    公开(公告)号：US4042599A

    公开(公告)日：1977-08-16

    申请号：US591882

    申请日：1975-06-30

    Applicant: Janice L. Greene

    Inventor： Janice L. Greene

    IPC: C07D207/263 ,  C07D201/08 ,  C07D207/267 ,  C07D207/26

    CPC classification number: C07D201/08

    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and at hydrogen pressures below 500 psi in the presence of a hydrogenation catalyst.

    Abstract translation: 在氢化催化剂存在下，通过在升高的温度和低于500psi的氢压下同时水解和氢化丁二腈来生产2-吡咯烷酮的方法。

    Process for producing 2-pyrrolidone
    35.
    发明授权
    Process for producing 2-pyrrolidone 失效
    2-吡咯烷酮生产方法

    公开(公告)号：US4036836A

    公开(公告)日：1977-07-19

    申请号：US591883

    申请日：1975-06-30

    Applicant: Janice L. Greene

    Inventor： Janice L. Greene

    IPC: C07D201/08 ,  C07D207/26

    CPC classification number: C07D201/08

    Abstract: A process for producing 2-pyrrolidone which comprises the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and pressures in the presence of a hydrogenation catalyst consisting essentially of nickel boride.

    Abstract translation: 一种生产2-吡咯烷酮的方法，其包括在基本上由硼化镍组成的氢化催化剂的存在下，在升高的温度和压力下同时水解和氢化丁二腈。

    Process for producing 2-pyrrolidone
    36.
    发明授权
    Process for producing 2-pyrrolidone 失效
    2-吡咯烷酮生产方法

    公开(公告)号：US3966763A

    公开(公告)日：1976-06-29

    申请号：US591878

    申请日：1975-06-30

    Applicant: Janice L. Greene

    Inventor： Janice L. Greene

    IPC: C07D201/08 ,  C07D207/26

    CPC classification number: C07D201/08

    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and pressures in the presence of a hydrogenation catalyst and a reaction promoter selected from the group consisting of 2-pyrrolidone and N-alkyl-2-pyrrolidone wherein the alkyl group contains from 1 to 6 carbon atoms.

    Abstract translation: 在氢化催化剂和选自2-吡咯烷酮和N-烷基-2-吡咯烷酮的反应促进剂存在下，在升高的温度和压力下同时水解和氢化丁二腈的方法，其中 烷基含有1至6个碳原子。

    Preparation of 2-pyrrolidinone
    37.
    发明授权
    Preparation of 2-pyrrolidinone 失效
    2-吡咯烷酮的制备

    公开(公告)号：US3781298A

    公开(公告)日：1973-12-25

    申请号：US3781298D

    申请日：1971-11-01

    Applicant: SUN RESEARCH DEVELOPMENT

    Inventor： DAVIS R

    IPC: C07D207/267 ,  B01J25/00 ,  C07B61/00 ,  C07D201/08 ,  C07D27/08

    CPC classification number: C07D201/08

    Abstract: A PROCESS FOR PREPARING 2-PYRROLIDINONE WHICH COMPRISES REACTING SUCCINONITRILE IN AQUEOUS SOLUTION AND IN THE ABSENCE OF ADDED AMMONIA WITH HYDROGEN IN THE PRESENCE OF A RANEY COBALT CATALYST, AT A TEMPERATURE OF FROM ABOUT 250*C. TO ABOUT 300*C. AND AT A HYDROGEN PRESSURE OF FROM ABOUT 2000 TO ABOUT 3500 P.S.I.G.

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