公开(公告)号：US5350847A

公开(公告)日：1994-09-27

申请号：US113081

申请日：1993-08-30

Applicant: Hugo Fuchs ,  Gerald Neubauer ,  Claus-Ulrich Priester

Inventor： Hugo Fuchs ,  Gerald Neubauer ,  Claus-Ulrich Priester

IPC: C07B63/02 ,  C07D201/16 ,  C07D201/12

CPC classification number: C07D201/16

Abstract: Caprolactam is purified by oxidative treatment in which mixtures which essentially contain the caprolactam to be purified and unsaturated lactams are treated with oxygen or an oxygen-containing gas mixture in an alkaline medium.

Abstract translation: 己内酰胺通过氧化处理纯化，其中基本上含有待纯化的己内酰胺和不饱和内酰胺的混合物在碱性介质中用氧或含氧气体混合物处理。

公开(公告)号：US5233037A

公开(公告)日：1993-08-03

申请号：US930365

申请日：1992-08-17

Applicant: Werner Nielinger ,  Edgar Ostlinning ,  Karsten-Josef Idel ,  Dieter Freitag ,  Hans-Josef Buysch

Inventor： Werner Nielinger ,  Edgar Ostlinning ,  Karsten-Josef Idel ,  Dieter Freitag ,  Hans-Josef Buysch

IPC: C07D201/12 ,  C08G69/14 ,  C08G69/16 ,  C08J11/16 ,  C08L77/00 ,  C08L77/02

CPC classification number: C07D201/12

Abstract: The invention relates to a process for the production of caprolactam by thermal depolymerization of polyamide in the presence of small quantities of potassium carbonate at 250.degree. to 320.degree. C. and to a process for purifying the resulting caprolactam.

Abstract translation: 本发明涉及通过聚酰胺在250-320℃的少量碳酸钾存在下热解聚制造己内酰胺的方法，以及纯化所得己内酰胺的方法。

公开(公告)号：US3925365A

公开(公告)日：1975-12-09

申请号：US44106174

申请日：1974-02-11

Applicant: KANEBO LTD

Inventor： IZAWA NOBUO ,  KOHNO TOSHIHIKO

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/12 ,  C07D201/16

Abstract: Epsilon -CAPROLACTAM MATERIAL SUCH AS A MONOMER, OLIGOMERS AND POLYMERS OF Epsilon -CAPROLACTAM AND MIXTURES OF THESE COMPOUNDS ARE PURIFIED FROM IMPURITY COMPOUNDS SUCH AS PHOSPHORIC ACID AND IONIZED METAL COMPOUNDS CONTAINED THEREIN BY BRINGING THE Epsilon -CAPROLACTAM MATERIAL INTO CONTACT WITH AN AQUEOUS SOLUTION CONTAINING 15 TO 75 PERCENT BY WEIGHT OF AT LEAST ONE ALKALI METAL PHOSPHATE TO EXTRACT THE IMPURITY COMPOUND FROM THE Epsilon -CAPROLACTAM MATERIAL INTO THE PHOSPHATE AQUEOUS SOLUTION AND, THEREAFTER, SEPARATING THE Epsilon -CAPROLACTAM MATERIAL FROM THE PHOSPHATE AQUEOUS SOLUTION BY WAY OF SETTLING OR CENTRIFUGING THE MIXTURE.

Abstract translation: ε-CABROLACTAM材料如EPS-CABROLACTAM的单体，低聚物和聚合物以及这些化合物的混合物，通过使ε-CABROLACTAM材料与含有AQUEOUS溶液接触的方式从包含在其中的酸性化合物和非离子化的金属化合物等净化化合物中纯化。 以至少一种碱金属磷酸盐的重量计为15至75％，以将来自ε-磷酸铵材料的重量化合物从磷酸盐水溶液中萃取，并且通过沉降或离心方式从磷酸盐水溶液中分离出ε-吡咯烷酮材料 混合物。

公开(公告)号：US20250100965A1

公开(公告)日：2025-03-27

申请号：US18852720

申请日：2023-03-30

Applicant: BASF SE

Inventor： Stefan BLEI ,  Faissal-Ali EL-TOUFAILI ,  Alexander HETZ-HUNSINGER ,  Marc FELDEN ,  Jochen GAUER ,  Michel GASSMANN ,  Christian DIENES ,  Zeljko KOTANJAC ,  Vikram Raghavendhar RAVIKUMAR ,  Esther Matyka LARYEA

IPC: C07D201/12 ,  C07D201/16

Abstract: The present invention relates to a process for separating at least one ε-caprolactam oligomeric compound CPO from a stream SR comprising said at least one CPO and ε-caprolactam monomeric compound CPM.

公开(公告)号：US11827591B2

公开(公告)日：2023-11-28

申请号：US17515249

申请日：2021-10-29

Applicant: Apeel Technology, Inc.

Inventor： Ronald C. Bakus, II ,  Alena Higgins ,  David Fisher ,  Charles Frazier ,  Louis Perez ,  Gabriel Rodriguez

IPC: C07C51/353 ,  C08J11/10 ,  C11C1/02 ,  C08J11/16 ,  C07D201/12

CPC classification number: C07C51/353 ,  C07D201/12 ,  C08J11/10 ,  C08J11/16 ,  C11C1/02

Abstract: Described herein are methods of preparing compounds derived from triglycerides or condensation polymers such as polyesters and/or polyamides. The methods may include subjecting triglyceride or condensation polymer containing matter to mechanical processing in the presence of a nucleophile.

公开(公告)号：US6011153A

公开(公告)日：2000-01-04

申请号：US140896

申请日：1998-08-21

Applicant: Wim Buijs ,  Henricus F. W. Wolters

Inventor： Wim Buijs ,  Henricus F. W. Wolters

IPC: C07D201/12 ,  C07D201/02 ,  C07D201/08

CPC classification number: C07D201/12

Abstract: Process for the preparation of a mixture of .epsilon.-caprolactam, 6-aminocaproic acid and 6-aminocaproic amide by heating an aqueous mixture containing ammonia and oligomers of 6-aminocaproic acid and/or of 6-aminocaproic amide, the aqueous mixture containing 0.5-7 wt. % of equivalent ammonia (calculated as NH.sub.3) and the temperature lying between 280.degree. C. and 330.degree. C., in which by "equivalent ammonia" is meant free ammonia and ammonia present in the form of a terminal amide group of one of the compounds present in the aqueous mixture.

Abstract translation: 通过加热含有氨和6-氨基己酸和/或6-氨基己酸酰胺的低聚物的含水混合物制备ε-己内酰胺，6-氨基己酸和6-氨基己酰胺的混合物的方法，含0.5- 7重量％ 相当于氨的百分比（以NH 3计算）和温度在280℃至330℃之间，其中“等效氨”是指游离氨和氨以其中之一的末端酰胺基团的形式存在 存在于含水混合物中的化合物。

公开(公告)号：US5948908A

公开(公告)日：1999-09-07

申请号：US617448

申请日：1996-03-18

Applicant: Stylianos Sifniades ,  Alan Bart Levy

Inventor： Stylianos Sifniades ,  Alan Bart Levy

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/16 ,  C07D201/12

Abstract: The present invention provides an improved process for the recovery of caprolactam from polycaprolactam processing waste. The present process for depolymerizing polycaprolactam waste to form caprolactam comprises the step of: in the absence of added catalyst, contacting the polycaprolactam waste with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1.5 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed.

Abstract translation: 本发明提供了从聚己内酰胺处理废物中回收己内酰胺的改进方法。 用于解聚聚己内酰胺废物形成己内酰胺的本发明方法包括以下步骤：在不加入催化剂的情况下，在约250℃至约400℃的温度和 范围为约1.5atm至约100atm，并且在其中形成含己内酰胺的蒸汽流的温度下，基本上小于饱和的水蒸气压。

公开(公告)号：US5929234A

公开(公告)日：1999-07-27

申请号：US82842

申请日：1998-05-21

Applicant: Stylianos Sifniades ,  Alan Bart Levy ,  Jan Agnes Jozef Hendrix

Inventor： Stylianos Sifniades ,  Alan Bart Levy ,  Jan Agnes Jozef Hendrix

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed. The formed caprolactam may then be used in the production of engineered resins and fibers.

Abstract translation: 本发明提供了一种从含有聚己内酰胺的废料中回收己内酰胺的有效方法。 用于解聚包含聚己内酰胺和非聚己内酰胺组分以形成己内酰胺的多组分废料的本方法包括以下步骤：在不加入催化剂的情况下，将多组分废料与过热蒸汽在约250℃的温度下接触 约400℃，并且在约1atm至约100atm范围内的压力下，并且基本上小于在其中形成含己内酰胺的蒸气流的温度下的饱和蒸气压。 然后，所形成的己内酰胺可以用于工程化树脂和纤维的生产。

公开(公告)号：US5821553A

公开(公告)日：1998-10-13

申请号：US350392

申请日：1994-12-06

Applicant: Robert J. Evans ,  Helena L. Chum

Inventor： Robert J. Evans ,  Helena L. Chum

IPC: C07D201/12 ,  C08F2/00 ,  C08J11/12 ,  C10G1/02 ,  C10G1/08 ,  C10G1/10 ,  C09K3/00

CPC classification number: C10G1/086 ,  C10G1/02 ,  C10G1/10

Abstract: A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a given polymer to its high value monomeric constituent occurs prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of said given polymer to its high value monomeric constituent prior to a temperature range that causes pyrolysis of other plastic components; selecting a catalyst and support for treating said feed streams with said catalyst to effect acid or base catalyzed reaction pathways to maximize yield or enhance separation of said high value monomeric constituent in said temperature program range; differentially heating said feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituent prior to pyrolysis of other plastic components; separating the high value monomeric constituents; selecting a second higher temperature range to cause pyrolysis of a different high value monomeric constituent of said plastic waste and differentially heating the feedstream at the higher temperature program range to cause pyrolysis of the different high value monomeric constituent; and separating the different high value monomeric constituent.

Abstract translation: 在载气中使用快速热解以转化具有混合聚合物组合物的塑料废物进料流的方法，使得给定聚合物在其高价值单体组分的热解之前发生在其中其它塑料组分的热解之前，其中包括：选择 第一温度程序范围，以使所述给定的聚合物在导致其它塑料组分的热解的温度范围之前被热分解成其高价值的单体组分; 选择催化剂和用所述催化剂处理所述进料流的载体以实现酸或碱催化的反应途径，以使得所述高价值单体组分在所述温度程序范围内产率最大化或增强分离; 在第一温度程序范围内的热速率差异加热所述进料流，以提供差别热解，以在其它塑料组分的热解之前选择性回收最佳量的高价值单体组分; 分离高价值的单体成分; 选择第二较高温度范围以引起所述塑料废料的不同高价值单体组分的热解，并在较高温度程序范围内差异加热进料流，以引起不同高价值单体组分的热解; 并分离不同的高价值单体成分。

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。