公开(公告)号：US5292880A

公开(公告)日：1994-03-08

申请号：US030512

申请日：1993-03-12

Applicant: Minas R. Apelian ,  Weldon K. Bell ,  Anthony S. Fung ,  Werner O. Haag ,  Chaya Venkat

Inventor： Minas R. Apelian ,  Weldon K. Bell ,  Anthony S. Fung ,  Werner O. Haag ,  Chaya Venkat

IPC: C01B39/36 ,  B01J29/40 ,  B01J29/65 ,  B01J29/70 ,  C01B39/02 ,  C01B39/38 ,  C01B39/42 ,  C01B39/44 ,  C07D201/04

CPC classification number: B01J29/06 ,  B01J29/40 ,  B01J29/65 ,  B01J29/7046 ,  C07D201/04 ,  B01J2229/123 ,  B01J2229/16 ,  B01J2229/37 ,  Y02P20/52

Abstract: A process for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion catalyst is a crystalline aluminosilicate zeolite having a Constraint Index greater than 1 and a reduced surface acidity. The surface acidity is reduced by selective surface dealumination of the crystalline aluminosilicate zeolite by contacting the zeolite with dicarboxylic acid, such as oxalic acid.

Abstract translation: 将环己酮肟催化转化为ε己内酰胺的方法。 转化催化剂是约束指数大于1且表面酸度降低的结晶硅铝酸盐沸石。 通过使沸石与二羧酸如草酸接触，结晶硅铝酸盐沸石的选择性表面脱铝来降低表面酸度。

公开(公告)号：US5264571A

公开(公告)日：1993-11-23

申请号：US954731

申请日：1992-09-30

Applicant: Hugo Fuchs ,  Gerald Neubauer ,  Josef Ritz

Inventor： Hugo Fuchs ,  Gerald Neubauer ,  Josef Ritz

IPC: C07D201/04 ,  C07D201/06 ,  C07D223/10 ,  C07D201/16

CPC classification number: C07D201/04 ,  C07D201/06

Abstract: A process for preparing caprolactam by Beckmann rearrangement of cyclohexanone oxime with oleum at from 85.degree. to 125.degree. C. in a plurality of rearrangement stages arranged in series entails returning a portion of the reaction mixture leaving the last rearrangement stage to at least one of the preceding rearrangement stages.

Abstract translation: 通过贝克曼重整环己酮肟与发烟硫酸在85℃至125℃下重排排列的多个重排阶段制备己内酰胺的方法需要将离开最后一个重排阶段的一部分反应混合物返回至 以前的重排阶段。

公开(公告)号：US5254684A

公开(公告)日：1993-10-19

申请号：US885604

申请日：1992-05-19

Applicant: Yusuke Izumi ,  Hiroshi Sato ,  Hiroshi Yoshioka ,  Yoshisaburou Nomura

Inventor： Yusuke Izumi ,  Hiroshi Sato ,  Hiroshi Yoshioka ,  Yoshisaburou Nomura

IPC: C07C231/10 ,  C07D201/04 ,  C07D223/00 ,  C07D239/00

CPC classification number: C07D201/04 ,  C07C231/10

Abstract: A process for producing an amide which comprises subjecting an oxime to liquid phase rearrangement in the presence of phosphorus pentoxide and at least one compound selected from the group consisting of N,N-dialkyl amides, N-alkyl cyclic amides and dialkyl sulfoxides and optionally a fluorine-containing strong said or its derivative. Said process can rearrange an oxime to a corresponding amide in a good yield under mild reaction conditions in the presence of a less stoichiometric amount of a catalyst.

公开(公告)号：US5212302A

公开(公告)日：1993-05-18

申请号：US811627

申请日：1991-12-23

Applicant: Masaru Kitamura ,  Hiroshi Ichihashi ,  Hideto Tojima

Inventor： Masaru Kitamura ,  Hiroshi Ichihashi ,  Hideto Tojima

IPC: B01J29/035 ,  B01J29/86 ,  B01J29/87 ,  B01J29/88 ,  B01J29/90 ,  B01J38/12 ,  B01J38/66 ,  C07D201/04

CPC classification number: B01J29/90 ,  B01J29/035 ,  B01J29/86 ,  B01J29/87 ,  B01J29/88 ,  B01J38/12 ,  B01J38/66 ,  C07D201/04 ,  Y02P20/52 ,  Y02P20/584

Abstract: In the production of .epsilon.-caprolactam from cyclohexanon oxime in gaseous phase in the presence of solid catalysts, the catalysts, no matter whether they may have worked, are brought into contact with either aqueous solution of ammonium salts and at least one basic material or ammonia water.

公开(公告)号：US4717769A

公开(公告)日：1988-01-05

申请号：US019851

申请日：1987-02-27

Applicant: Hiroshi Sato ,  Kenichi Hirose ,  Masaru Kitamura ,  Youichi Umada ,  Norio Ishii ,  Hideto Tojima

Inventor： Hiroshi Sato ,  Kenichi Hirose ,  Masaru Kitamura ,  Youichi Umada ,  Norio Ishii ,  Hideto Tojima

IPC: B01J27/00 ,  B01J29/04 ,  B01J29/86 ,  B01J29/87 ,  B01J29/88 ,  B01J29/89 ,  C07B61/00 ,  C07D201/04

CPC classification number: C07D201/04 ,  B01J29/04 ,  Y02P20/52

Abstract: .epsilon.-caprolactam is produced by gas phase catalytic synthesis with high selectivity of lactam wherein cyclohexanone oxime is brought into contact with a crystalline metallo-silicate catalyst having Si/metal atomic ratio is more than 500. The metal moiety in the catalyst is Ga, Fe, B, Zr, Bi, Nb, Zn, Be, Cr, La, Ti, Hf, V and/or Cu.

Abstract translation: ε-己内酰胺通过气相催化合成以内酰胺的高选择性制备，其中环己酮肟与具有Si /金属原子比的结晶金属硅酸盐催化剂接触超过500.催化剂中的金属部分是Ga，Fe ，B，Zr，Bi，Nb，Zn，Be，Cr，La，Ti，Hf，V和/或Cu。

公开(公告)号：US4689412A

公开(公告)日：1987-08-25

申请号：US919466

申请日：1986-10-16

Applicant: Hans Rademacher ,  Heinz-Werner Voges

Inventor： Hans Rademacher ,  Heinz-Werner Voges

IPC: C07D201/04

CPC classification number: C07D201/04

Abstract: The present invention is a process for preparing lactams having 8 to 15 carbon atoms by the Beckmann rearrangement of the corresponding oximes in a solution of an organic solvent by means of 0.5 to 10% by weight referred to the oxime of an acid derivative acting as a catalyst. The anhydrides of organic sulfonic acids or of sulfuric acid half esters or mixed anhydrides of organic sulfonic acid and anhydrides of sulfuric acid half esters are used as the catalysts.

Abstract translation: 本发明是通过相对于肟的Beckmann重排在有机溶剂的溶液中制备具有8至15个碳原子的内酰胺的方法，其中0.5至10重量％，称为肟酸作为 催化剂。 使用有机磺酸或硫酸半酯或硫酸半酯的有机磺酸和酸酐的混合酸酐的酸酐作为催化剂。

公开(公告)号：US4359421A

公开(公告)日：1982-11-16

申请号：US225157

申请日：1981-01-15

Applicant: Weldon K. Bell ,  Clarence D. Chang

Inventor： Weldon K. Bell ,  Clarence D. Chang

IPC: C07D201/04

CPC classification number: C07D201/04

Abstract: Process for preparing caprolactam from cyclohexanone oxime by passing the oxime, preferably dissolved in a solvent, over a zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 of at least 12 and a Constraint Index of from 1 to 12.

Abstract translation: 通过使优选溶解在溶剂中的肟超过SiO 2 / Al 2 O 3至少为12且约束指数为1至12的沸石，从环己酮肟制备己内酰胺的方法。

公开(公告)号：US4257950A

公开(公告)日：1981-03-24

申请号：US79329

申请日：1979-09-27

Applicant: Peter Horn ,  Otto-Alfred Grosskinsky ,  Richard Thoma ,  Hugo Fuchs

Inventor： Peter Horn ,  Otto-Alfred Grosskinsky ,  Richard Thoma ,  Hugo Fuchs

IPC: C07D201/04

CPC classification number: C07D201/04

Abstract: A process for the continuous preparation of .epsilon.-caprolactam by Beckmann rearrangement of cyclohexanone-oxime, dissolved in a solvent which is inert toward oleum and is immiscible with oleum and water, at an elevated temperature, with removal of the heat of rearrangement by evaporation of the solvent, wherein oleum containing caprolactam is circulated successively through a conveying zone, a mixing zone, a boiling zone and a separating zone, upstream of the conveying zone oleum is added at the rate at which it is consumed, in the mixing zone cyclohexanone-oxime dissolved in solvent is added under turbulent conditions, in the boiling zone the heat of rearrangement is removed in a conventional manner by evaporating the solvent and recycling the condensate, and in the separating zone the reaction mixture is separated into a solvent phase, from which solvent is withdrawn at the rate at which the phase is formed, and a caprolactam-containing oleum phase, which is removed at the rate at which it is formed.

Abstract translation: 通过贝克曼重排环己酮 - 肟连续制备ε-己内酰胺的方法，该方法在升高的温度下溶解在对发烟硫酸是惰性的且与发烟硫酸和水不混溶的溶剂中，通过蒸发除去重排热 将其中含有发烟硫酸的己内酰胺在输送区上游的输送区，混合区，沸点区和分离区连续循环的溶剂以其消耗的速率在混合区中加入环己酮 - 在湍流条件下加入溶解在溶剂中的肟，在沸腾区中，以常规方式通过蒸发溶剂并再循环冷凝物来除去重排热，并且在分离区中将反应混合物分离成溶剂相，从其中 溶剂以形成相的速率被抽出，含己内酰胺的发烟硫酸相以 它是形成的。

公开(公告)号：US4137263A

公开(公告)日：1979-01-30

申请号：US831790

申请日：1977-09-09

Applicant: Otto Immel ,  Bernd-Ulrich Kaiser ,  Hans-Helmut Schwarz ,  Klaus Starke

Inventor： Otto Immel ,  Bernd-Ulrich Kaiser ,  Hans-Helmut Schwarz ,  Klaus Starke

IPC: C07C251/46 ,  C07C20060101 ,  C07C67/00 ,  C07C239/00 ,  C07D20060101 ,  C07D201/04 ,  C07D223/10 ,  C07C131/04

CPC classification number: F27B3/00

Abstract: A process for the evaporation of cyclohexanone oxime, wherein the cyclohexanone oxime is evaporated in the presence of an inert gas at a superatmospheric pressure of at least 300 Torr at 110.degree. to 160.degree. C, the evaporation temperature being governed by the inert gas pressure or by the ratio of cyclohexanone oxime to inert gas.

Abstract translation: 蒸发环己酮肟的方法，其中环己酮肟在惰性气体存在下，在110至160℃的超大气压至少300乇的条件下蒸发，蒸发温度由惰性气体压力或 通过环己酮肟与惰性气体的比例。

公开(公告)号：US4081442A

公开(公告)日：1978-03-28

申请号：US765102

申请日：1977-02-02

Applicant: Willem J. Wassen ,  Reijer Goettsch

Inventor： Willem J. Wassen ,  Reijer Goettsch

IPC: C01C1/24 ,  C07D201/16 ,  C07D201/04

CPC classification number: C07D201/16

Abstract: A process for removing sulfuric acid from reaction mixtures containing sulfuric acid and .epsilon.-caprolactam by treating the sulfuric acid with ammonia and sulfur dioxide to produce ammonium sulfate salts and reducing the ammonium sulfate salts to ammonia and sulfur dioxide.

Abstract translation: 通过用氨和二氧化硫处理硫酸以产生硫酸铵盐并将硫酸铵盐还原成氨和二氧化硫，从含有硫酸和ε-己内酰胺的反应混合物中除去硫酸的方法。