公开(公告)号：US5962681A

公开(公告)日：1999-10-05

申请号：US972763

申请日：1997-11-18

Applicant: Horst Egly ,  Hans-Harald Hunger ,  Thomas Sauer

Inventor： Horst Egly ,  Hans-Harald Hunger ,  Thomas Sauer

IPC: C07D201/16 ,  C07D201/12

CPC classification number: C07D201/16

Abstract: The disclosure is a process for recovering caprolactam monomer and oligomer from aqueous polycaprolactam extracts by removing the inorganic contaminants present therein.

Abstract translation: 本公开是通过除去其中存在的无机污染物从己酸内酰胺水溶液萃取物中回收己内酰胺单体和低聚物的方法。

公开(公告)号：US5952493A

公开(公告)日：1999-09-14

申请号：US202094

申请日：1998-12-09

Applicant: Eberhard Fuchs

Inventor： Eberhard Fuchs

IPC: C07D201/08 ,  C07D201/16 ,  C07D223/10

CPC classification number: C07D201/16

Abstract: Crude caprolactam is purified by reaction with a complex hydride of boron or of aluminum.

Abstract translation: PCT No.PCT / EP98 / 03098 371 1998年12月9日第 102（e）日期1998年12月9日PCT提交1997年6月13日PCT公布。 公开号WO97 / 47596 日期1997年12月18日粗制己内酰胺通过与硼或铝的复合氢化物反应而纯化。

公开(公告)号：US5877314A

公开(公告)日：1999-03-02

申请号：US800324

申请日：1997-02-14

Applicant: Frank E. Herkes ,  Robert Pestman ,  Jeroen A.F. Boogers

Inventor： Frank E. Herkes ,  Robert Pestman ,  Jeroen A.F. Boogers

IPC: B01J23/46 ,  C07B61/00 ,  C07C227/08 ,  C07C229/08 ,  C07C231/14 ,  C07C237/06 ,  C07D201/08 ,  C07D201/02 ,  C07D201/16

CPC classification number: C07C231/14 ,  C07C227/08 ,  C07D201/08 ,  Y02P20/52

Abstract: This continuous process for preparing an aqueous mixture of .di-elect cons.-caprolactam and 6-aminocaproic acid and/or 6-aminocaproamide by involves, as the reductive amination step, continuously contacting 5-formylvaleric acid or an alkyl 5-formylvalerate in water as solvent with hydrogen and an excess of ammonia in the presence of a ruthenium on carrier, as a catalyst, wherein the carrier is at least one of titanium oxide or zirconium oxide. The aqueous mixture can be used to prepare .di-elect cons.-caprolactam.

Abstract translation: 这种用于制备+ 53-己内酰胺和6-氨基己酸和/或6-氨基己酰胺的水混合物的连续方法涉及作为还原胺化步骤，将5-甲酰基戊酸或5-甲酰基戊酸烷基酯在水中作为溶剂连续接触， 氢和过量的氨在载体上的钌存在下作为催化剂，其中载体是氧化钛或氧化锆中的至少一种。 含水混合物可用于制备+ 53-己内酰胺。

公开(公告)号：US5539106A

公开(公告)日：1996-07-23

申请号：US275739

申请日：1994-07-19

Applicant: Marcellinus P. G. Thijert ,  Theodorus A. van der Knaap ,  Johannes F. Haverkort

Inventor： Marcellinus P. G. Thijert ,  Theodorus A. van der Knaap ,  Johannes F. Haverkort

IPC: C07B61/00 ,  C07D201/16

CPC classification number: C07D201/16

Abstract: A process is described for the purification of .epsilon.-caprolactam which involves hydrogenation of a water-.epsilon.-caprolactam mixture in the presence of a heterogeneous hydrogenation catalyst, wherein the .epsilon.-caprolactam-water mixture is contacted with gaseous hydrogen, upon which hydrogen dissolves in the .epsilon.-caprolactam-water mixture, and subsequently, this hydrogen-containing mixture is contacted with the hydrogenation catalyst. About 90-100% of the hydrogen is dissolved in the water-.epsilon.-caprolactam mixture.

Abstract translation: 描述了用于纯化ε-己内酰胺的方法，其涉及在非均相氢化催化剂存在下氢化ε-己内酰胺混合物，其中ε-己内酰胺 - 水混合物与气态氢接触，氢气溶解在 ε-己内酰胺 - 水混合物，随后将该含氢混合物与氢化催化剂接触。 大约90-100％的氢气溶解在ε-己内酰胺混合物中。

公开(公告)号：US5502184A

公开(公告)日：1996-03-26

申请号：US293169

申请日：1994-08-19

Applicant: Hiroshi Kajikuri ,  Hideto Tojima ,  Tomokazu Nakamura ,  Masaru Kitamura

Inventor： Hiroshi Kajikuri ,  Hideto Tojima ,  Tomokazu Nakamura ,  Masaru Kitamura

IPC: C07D201/16 ,  C07D201/04

CPC classification number: C07D201/16

Abstract: The invention provides a process for producing high quality .epsilon.-caprolactam which comprises allowing crude .epsilon.-caprolactam obtained by gas phase Beckmann rearrangement of cyclohexanone oxime to contact with hydrogen at 100.degree.-200.degree. C. in the presence of a hydrogenation catalyst.

Abstract translation: 本发明提供了一种制备高品质ε-己内酰胺的方法，其包括使得在环己酮肟气相贝克曼重排获得的粗ε-己内酰胺在氢化催化剂存在下，在100-200℃下与氢接触。

公开(公告)号：US5496941A

公开(公告)日：1996-03-05

申请号：US375410

申请日：1995-01-18

Applicant: Josef Ritz ,  Rolf Fischer ,  Werner Schnurr ,  Gu/ nther Achhammer ,  Hermann Luyken ,  Eberhard Fuchs

Inventor： Josef Ritz ,  Rolf Fischer ,  Werner Schnurr ,  Gu/ nther Achhammer ,  Hermann Luyken ,  Eberhard Fuchs

IPC: C07D201/08 ,  C07D201/16

CPC classification number: C07D201/16 ,  Y02P20/52

Abstract: Crude capronitrile is purified by hydrogenation, subsequent treatment in an acidic medium and subsequent distillation in an alkaline medium, by a process in which(a) 6-aminocapronitrile is converted into crude caprolactam by reaction with water,(b) high boilers and low boilers are separated off from the crude caprolactam from step (a),(c) the crude caprolactam from step (b) is treated with hydrogen at from 50.degree. to 150.degree. C. and from 1.5 to 250 bar in the presence of a hydrogenation catalyst and, if desired, of a solvent to give a mixture A,(d1) mixture A in a solvent is passed, at from 30.degree. to 80.degree. C. and from 1 to 5 bar, over an ion exchanger containing terminal acid groups to give a mixture B1, or(d2) mixture A is distilled in the presence of sulfuric acid, any solvent present being removed before the addition of the sulfuric acid, to give a mixture B2, and(e) mixture B1 or mixture B2 is distilled in the presence of a base to give pure caprolactam.

Abstract translation: 通过氢化纯化粗碳腈，随后在酸性介质中处理，随后在碱性介质中进行蒸馏，其中（a）通过与水反应将（a）6-氨基己腈转化为粗己内酰胺，（b）高锅炉和低锅炉 与步骤（a）中的粗己内酰胺分离，（c）步骤（b）中的粗己内酰胺在氢化催化剂存在下在50-150℃和1.5-250巴下用氢处理 并且如果需要，得到溶剂以得到混合物A，（d1）溶剂中的混合物A在30℃至80℃和1至5巴条件下通过含有末端酸基团的离子交换剂 得到混合物B1，或（d2）在硫酸存在下蒸馏混合物A，在加入硫酸之前，除去存在的任何溶剂，得到混合物B2，并且（e）蒸馏出混合物B1或混合物B2 在碱的存在下得到纯己内酰胺。

公开(公告)号：US5434273A

公开(公告)日：1995-07-18

申请号：US191649

申请日：1994-02-04

Applicant: Hans-Juergen Weyer ,  Rolf Fischer

Inventor： Hans-Juergen Weyer ,  Rolf Fischer

IPC: C07D207/26 ,  C07D207/267 ,  C07D201/08 ,  C07D201/16

CPC classification number: C07D207/267

Abstract: The preparation of N-substituted 2-pyrrolidones (I) by the reaction of maleic acid, fumaric acid, or succinic acid or functional derivatives of these acids (compounds II) with a primary amine (III) or by the reaction of amides or imides derived from II and III under hydrogenating conditions in a synthesis stage followed by isolation, by distillation, of I and other volatile components from the resulting reaction mixture, in which the residues present following distillation are subjected to further hydrogenation treatment and the compound (I) thus formed is isolated by distillation.

Abstract translation: 通过马来酸，富马酸或琥珀酸或这些酸（化合物II）的官能衍生物与伯胺（III）的反应或通过酰胺或酰亚胺的反应制备N-取代的2-吡咯烷酮（I） 在合成阶段在氢化条件下衍生自II和III，然后通过蒸馏从所得反应混合物中分离I和其它挥发性组分，其中在蒸馏之后存在的残余物进行进一步氢化处理，化合物（I） 由此形成的蒸馏分离。

公开(公告)号：US4804754A

公开(公告)日：1989-02-14

申请号：US130949

申请日：1987-12-10

Applicant: Emile De Decker ,  Jozef Oostvogels ,  Gerard van Wauwe ,  Gerald Neubauer

Inventor： Emile De Decker ,  Jozef Oostvogels ,  Gerard van Wauwe ,  Gerald Neubauer

IPC: C07D201/04 ,  C07D201/16

CPC classification number: C07D201/04

Abstract: Caprolactam is prepared in a process comprising(a) a Beckmann rearrangement of cyclohexanone oxime with oleum at from 70.degree. to 130.degree. C. in one or more rearrangement stages, and(b) aftertreatment of the reaction mixture obtained from the rearrangement stage in a delay zone at from 70.degree. to 110.degree. C. for from 10 to 600 minutes.

Abstract translation: 在一个方法中制备己内酰胺，该方法包括（a）在一个或多个重排阶段中，环己酮肟与发烟硫酸在发酵油中的贝克曼重排在70〜130℃，（b）后处理从重排阶段获得的反应混合物 延迟区为70〜110℃，时间为10〜600分钟。

公开(公告)号：US4457807A

公开(公告)日：1984-07-03

申请号：US376001

申请日：1982-05-07

Applicant: Peter F. M. Rulkens ,  Nicolaas F. Haasen ,  Otto G. Plantema

Inventor： Peter F. M. Rulkens ,  Nicolaas F. Haasen ,  Otto G. Plantema

IPC: B01D3/14 ,  C07D201/16 ,  B01D3/10

CPC classification number: B01D3/14 ,  C07D201/16 ,  Y10S203/11

Abstract: A process is provided for recovering epsilon-caprolactam of a purity in excess of 99.9 wt. %, in a two-stage distillation operation. Each stage comprises an evaporator and a rectification column having a pressure drop across the theoretical trays thereof of less than about 2.5 MBAR.

Abstract translation: 提供了一种回收纯度超过99.9重量％的ε-己内酰胺的方法。 ％，在两阶段蒸馏操作。 每个阶段包括蒸发器和精馏塔，其整个理论塔板上的压降小于约2.5MARAR。

公开(公告)号：US4349473A

公开(公告)日：1982-09-14

申请号：US199218

申请日：1980-10-21

Applicant: Pier P. Rossi ,  Mario Catoni

Inventor： Pier P. Rossi ,  Mario Catoni

IPC: C07D201/16 ,  B01J19/18 ,  C07D201/08 ,  C07D201/10

CPC classification number: C07D201/10 ,  B01J19/1862 ,  C07D201/08 ,  B01J2219/00058 ,  B01J2219/00094 ,  B01J2219/00128

Abstract: Process for the preparation of .omega.-lactams (in particular caprolactam)ith improved yields, by reaction of cycloaliphatic derivatives having the general formula: ##STR1## wherein n=3-13 with nitrosating agents in the presence of dehydrating agents, characterized by the fact that the reaction is carried out a low temperature which is constant between stages, and in all the zones of a stage and with particular concentrations of the dehydrating agent.

Abstract translation: 通过在脱水剂存在下，通过使具有以下通式的脂环族衍生物（其中n = 3-13）与亚硝化剂反应制备具有改善产率的ω-内酰胺（特别是己内酰胺）的方法，其特征在于： 反应进行阶段之间恒定的低温，在一个阶段的所有区域和特定浓度的脱水剂中进行。