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    Synthesis of caprolactam
    262.
    发明授权
    Synthesis of caprolactam 失效
    己内酰胺的合成

    公开(公告)号：US4927924A

    公开(公告)日：1990-05-22

    申请号：US338015

    申请日：1989-04-14

    Applicant: Weldon K. Bell ,  Werner O. Haag

    Inventor： Weldon K. Bell ,  Werner O. Haag

    IPC: B01J29/40 ,  B01J29/65 ,  B01J29/70 ,  C07D201/04

    CPC classification number: B01J29/40 ,  C07D201/04 ,  B01J2229/26 ,  B01J2229/36 ,  B01J2229/42 ,  B01J29/65 ,  B01J29/70 ,  Y02P20/52

    Abstract: A process is provided for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion is characterized by exceptionally high selectivity and reduced rate of catalyst aging, even at single pass conversion above 90 percent. The conversion catalyst is a medium pore size crystalline zeolite exemplified by ZSM-5 which has low acid activity. Recycling unconverted oxime provides excellent ultimate yield of caprolactam.

    Abstract translation: 提供了将环己酮肟催化转化成ε己内酰胺的方法。 该转化的特征在于特别高的选择性和降低的催化剂老化速率，甚至在单程转化率高于90％时。 转化催化剂是具有低酸活性的ZSM-5示例的中等孔径结晶沸石。 回收未转化的肟提供了极好的己内酰胺收率。

    Catalyzed oxime conversions
    263.
    发明授权
    Catalyzed oxime conversions 失效
    催化肟转化

    公开(公告)号：US4697010A

    公开(公告)日：1987-09-29

    申请号：US870822

    申请日：1986-06-05

    Applicant: Patrick E. McMahon

    Inventor： Patrick E. McMahon

    IPC: C07D201/04

    CPC classification number: C07D201/04

    Abstract: A process for the catalyzed conversion of oximes such as cyclohexanone oxime to amides such as caprolactam via a high conversion, high selectivity, long catalyst lifetime reaction over a HAMS-1B crystalline borosilicate-based catalyst composition.

    Abstract translation: 通过HAMS-1B结晶硼硅酸盐基催化剂组合物的高转化率，高选择性，长催化剂寿命反应，将肟如环己酮肟催化转化为酰胺如己内酰胺的方法。

    Process for preparing lactams
    265.
    发明授权
    Process for preparing lactams 失效
    制备内酰胺的方法

    公开(公告)号：US3991047A

    公开(公告)日：1976-11-09

    申请号：US608249

    申请日：1975-08-27

    Applicant: Radomir Moudry ,  Bruno Domeisen ,  Hanswerner Philipp

    Inventor： Radomir Moudry ,  Bruno Domeisen ,  Hanswerner Philipp

    IPC: C01B17/50 ,  C01B17/74 ,  C01C1/24 ,  C01F5/12 ,  C07D201/04 ,  C07D201/16

    CPC classification number: C07D201/04

    Abstract: In a process for the preparation of lactam from cycloalkanone comprising reacting said alkanone with hydroxylamine sulfate to form the corresponding cycloalkanone oxime followed by Beckman rearrangement to yield said lactam and neutralization of the sulfuric acid formed by ammonia whereby ammonium sulfate is formed as a byproduct, the improvement which comprises reacting said ammonium sulfate with an alkaline-earth metal oxide or hydroxide to form an alkaline earth metal sulfate and ammonia, heating said alkaline-earth metal sulfate to decompose it into said alkaline-earth metal oxide and sulfur dioxide and/or sulfur trioxide, converting said sulfur dioxide and/or sulfur trioxide into sulfuric acid, whereby said sulfuric acid and said ammonia are capable of reuse in said process.

    Abstract translation: 在由环烷酮制备内酰胺的方法中，包括使所述烷酮与硫酸羟胺反应形成相应的环烷酮肟，然后进行贝克曼重排，得到所述内酰胺并中和由氨形成的硫酸，由此形成副产物硫酸铵。 改进包括使所述硫酸铵与碱土金属氧化物或氢氧化物反应以形成碱土金属硫酸盐和氨，加热所述碱土金属硫酸盐以将其分解成所述碱土金属氧化物和二氧化硫和/或硫 三氧化硫，将所述二氧化硫和/或三氧化硫转化为硫酸，由此所述硫酸和所述氨能够在所述方法中再利用。

    Process for the preparation of omega laurinolactame
    266.
    发明授权
    Process for the preparation of omega laurinolactame 失效
    制备OMEGA LAURINOLACTAME的方法

    公开(公告)号：US3825532A

    公开(公告)日：1974-07-23

    申请号：US19232771

    申请日：1971-10-26

    Applicant: AQUITAINE TOTAL ORGANICO

    Inventor： KERN R ,  POULAIN C ,  TOCK F

    IPC: C07D201/04 ,  C07D41/00

    CPC classification number: C07D201/04

    Abstract: A PROCESS FOR REARRANGING CYCLODODECANONEOXIME INTO PURE CYCLODODECALACTAME, CHARACTERIZED BY THE FACT THAT THE OXIME, CONVERTED INTO OXIME CHLORHYDRATE, IS MADE INTO A SOLUTION WITH A SELECTIVE SOLVENT, IN THE PRESENCE OF A SMALL QUANTITY OF CATALYST, CHOSEN FROM THE GROUP OF ACID HALIDES AND OXYHALIDES, AND THEN HEATED TO A TEMPERATURE OF BETWEEN 65 AND 110* C. FOR ONE TO TWO HOURS, THE RESULTING HYDROCHLORIC ACID IS DRAWN OFF BY MEANS OF A FLOW OF GAS WHILE MAINTAINING THE REFLUX TEMPERATURE OF THE SOLVENT, THE REACTION MIXTURE IS WASHED WHILE HOT WITH AN ALKALINE AQUEOUS SOLUTION, THE ORGANIC PHASE CONTAINING THE LACTAME IS WASHED IN HOT WATER UNTIL BECOMES NEUTRAL, AND THE LACTAME IS RECOVERED BY CRYSTALLIZATION OR DISTILLATION OF THE SOLVENT. THE QUANTITY OF CATALYST USED RANGES FROM 0.5 TO 5%, AND PREFERABLY 1 TO 2%, OF THE WEIGHT OF OXIME. THE SOLVENT IS PREFERABLY SELECTED FROM ALKANES, CYCLOALKANES, SUBSTITUTED ALKANE AND CYCLOALKANE DERIVATIVES, AND HALOGENATED ALKANE AND CYCLOALKANE DERIVATIVES.

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