公开(公告)号：US5395974A

公开(公告)日：1995-03-07

申请号：US184335

申请日：1994-01-21

Applicant: Ronald J. McKinney

Inventor： Ronald J. McKinney

IPC: C07D207/12 ,  B01J27/08 ,  C07B35/06 ,  C07B61/00 ,  C07C209/62 ,  C07C211/12 ,  C07C231/14 ,  C07C237/06 ,  C07C253/20 ,  C07C253/24 ,  C07C255/04 ,  C07C255/19 ,  C07C255/24 ,  C07D201/12

CPC classification number: C07C209/62 ,  C07C253/20 ,  C07D201/12

Abstract: The present invention relates to a method of reacting polyamides or mixtures thereof with ammonia to obtain a mixture of monomers. The reaction is carried out in the presence of certain Lewis Acid catalyst precursors.

Abstract translation: 本发明涉及使聚酰胺或其混合物与氨反应以获得单体混合物的方法。 反应在某些路易斯酸催化剂前体存在下进行。

公开(公告)号：US5360905A

公开(公告)日：1994-11-01

申请号：US60972

申请日：1993-05-14

Applicant: Hugo Fuchs ,  Claus-Ulrich Priester ,  Gerald Neubauer ,  Erwin Brunner ,  Josef Ritz ,  Michael Kopietz

Inventor： Hugo Fuchs ,  Claus-Ulrich Priester ,  Gerald Neubauer ,  Erwin Brunner ,  Josef Ritz ,  Michael Kopietz

IPC: C08J11/00 ,  C07D201/12 ,  C08J11/14

CPC classification number: C07D201/12

Abstract: A process for recovering caprolactam from oligomers and/or polymers of caprolactam comprises the following steps:a) treating oligomers and/or polymers of caprolactam with from 1 to 20 parts by weight of water per part by weight of oligomer or polymer at from 200.degree. to 350.degree. C. under superatmospheric pressure with a residence time of from 0.5 to 10 hours to form an aqueous reaction mixture comprising polycaprolactam, monomeric caprolactam and oligomers thereof, andb) passing the aqueous reaction mixture obtained in a) into a fluidized bed of alumina at from 250.degree. to 400.degree. C. to obtain a mixture of steam and caprolactam.

Abstract translation: 从己内酰胺的低聚物和/或聚合物中回收己内酰胺的方法包括以下步骤：a）在200℃下用每重量份低聚物或聚合物1至20重量份水处理己内酰胺的低聚物和/或聚合物 在超大气压下加热至350℃，停留时间为0.5至10小时，以形成包含聚己内酰胺，单体己内酰胺及其低聚物的含水反应混合物，和b）将a）中得到的含水反应混合物送入流化床 氧化铝在250-400℃下反应，得到蒸汽与己内酰胺的混合物。

公开(公告)号：US4683305A

公开(公告)日：1987-07-28

申请号：US883177

申请日：1986-07-08

Applicant: Hugo Fuchs ,  Uwe Brand ,  Helmut Buchaeckert

Inventor： Hugo Fuchs ,  Uwe Brand ,  Helmut Buchaeckert

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: Caprolactam is obtained by cleaving oligomers of caprolactam by a process in which the oligomers, in a liquid or solid state, are introduced into a fluidized alumina bed and cleaved at from 290.degree. to 400.degree. C. in the presence of steam, and, in addition to the amount of inert gas required to fluidize the alumina bed, from 0.1 to 3 times this amount of inert gas is introduced above the fluidized bed.

Abstract translation: 己内酰胺是通过以下方法裂解己内酰胺的低聚物来获得的：己内酰胺的低聚物是将液体或固体状态的低聚物引入流化的氧化铝床中，并在蒸气存在的情况下在290℃-400℃下裂解， 除了流化氧化铝床所需的惰性气体的量之外，将0.1-3倍量的惰性气体引入到流化床之上。

公开(公告)号：US4311642A

公开(公告)日：1982-01-19

申请号：US187864

申请日：1980-09-17

Applicant: Lamberto Crescentini ,  Webb B. Blackman, Jr. ,  Joseph D. DeCaprio ,  William B. Fisher ,  Roy J. Lilley, Jr. ,  John W. Wagner

Inventor： Lamberto Crescentini ,  Webb B. Blackman, Jr. ,  Joseph D. DeCaprio ,  William B. Fisher ,  Roy J. Lilley, Jr. ,  John W. Wagner

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/12 ,  C07D201/16

Abstract: This invention is the method to recover caprolactam from a concentrated nylon 6 chip wash water containing water, cyclic oligomer, and caprolactam. The method comprises feeding the concentrated wash water to a wiped-film evaporator operated at a temperature of from about 200.degree. C. to 300.degree. C. and a pressure from about 10 to about 250 Torr, thereby separating the wash water into (a) an overhead stream of water and caprolactam and (b) a bottom stream of caprolactam and cyclic oligomers, then recovering the caprolactam from the overhead stream. The caprolactam in the bottom stream can also be recovered, and the cyclic oligomers depolymerized to caprolactam for recovery.

Abstract translation: 本发明是从含有水，环状低聚物和己内酰胺的浓缩尼龙6片洗涤水中回收己内酰胺的方法。 该方法包括将浓缩的洗涤水加入到在约200℃至300℃的温度和约10至约250托的压力下操作的擦膜蒸发器，从而将洗涤水分离成（a） 水和己内酰胺的顶部物流和（b）己内酰胺和环状低聚物的底部流，然后从顶部物流中回收己内酰胺。 也可以回收底部流中的己内酰胺，环状低聚物解聚为己内酰胺以进行回收。

公开(公告)号：US3939153A

公开(公告)日：1976-02-17

申请号：US496258

申请日：1974-08-09

Applicant: Frank C. Fowler

Inventor： Frank C. Fowler

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: A non-catalytic method is provided for depolymerizing nylon-6 to produce e-caprolactam. The nylon, as a melt is continuously fed to a reaction zone together with superheated steam and undecomposed polymer melt is continuously withdrawn from the reaction zone together with steam and polymer decomposition products. Caprolactam is recovered from the polymer decomposition products.

Abstract translation: 提供用于解聚尼龙-6以产生ε-己内酰胺的非催化方法。 作为熔体的尼龙与过热蒸汽一起连续地供给到反应区，未分解的聚合物熔体与蒸汽和聚合物分解产物一起从反应区连续地取出。 从聚合物分解产物中回收己内酰胺。

公开(公告)号：US3182055A

公开(公告)日：1965-05-04

申请号：US25934663

申请日：1963-02-18

Applicant: ALLIED CHEM

Inventor： BONFIELD JOHN H ,  HECKER RICHARD C ,  SNIDER ORVILL E ,  APOSTLE BASIL G

IPC: C07D201/12

CPC classification number: C07D201/12

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：US20090036602A1

公开(公告)日：2009-02-05

申请号：US12182396

申请日：2008-07-30

Applicant: KEITH WHISTON ,  STEWART FORSYTH ,  KENNETH R. SEDDON

Inventor： KEITH WHISTON ,  STEWART FORSYTH ,  KENNETH R. SEDDON

IPC: C08L77/00

CPC classification number: C08J11/18 ,  C07D201/12 ,  Y02P20/542 ,  Y02W30/706

Abstract: An improved process for the hydrolysis of nylon polymer is herein disclosed using ionic liquids and optionally one equivalent of sulfuric acid per amide residue of the polymer. The process provides for a simplified means for separation of the hydrolyzed polyamide constituent monomers.

Abstract translation: 本文公开了一种改进的尼龙聚合物水解方法，其使用离子液体和任选地一个当量的硫酸每个聚合物的每个酰胺残基。 该方法提供了用于分离水解的聚酰胺构成单体的简化装置。

公开(公告)号：US06660857B2

公开(公告)日：2003-12-09

申请号：US10210878

申请日：2002-08-02

Applicant: Frank P. W. Agterberg ,  Rudolf P. M. Guit ,  Matthias R. J. Offermanns

Inventor： Frank P. W. Agterberg ,  Rudolf P. M. Guit ,  Matthias R. J. Offermanns

IPC: C07D20108

CPC classification number: C07D201/12 ,  C07D201/08

Abstract: A process for the preparation of &egr;-caprolactam starting from 6-aminocaproic acid, 6-aminocaproamide, 6-aminocaproic ester, 6-aminocapronitrile, oligomers or polymers of these compounds or mixtures comprising at least two of these compounds, which process is performed in the presence of N-(5-carboxypentyl)-&egr;-caprolactam and/or derivative thereof in an amount of less than 50 wt. % and more than 0.1 wt. % (based on the total reaction mixture).

Abstract translation: 从6-氨基己酸，6-氨基己酰胺，6-氨基己酸酯，6-氨基己腈，这些化合物的低聚物或聚合物或包含这些化合物中的至少两种的混合物制备ε-己内酰胺的方法，该方法在 N-（5-羧基戊基） - 己内酰胺和/或其衍生物的存在量小于50wt。 ％和大于0.1wt。 ％（基于总反应混合物）。

公开(公告)号：US20030225170A1

公开(公告)日：2003-12-04

申请号：US10159982

申请日：2002-06-03

Inventor： Antonius J.F.M. Courage ,  Marco J.A. Houben ,  Mathieu H.M. Mertens ,  Leonardus J.G. Raets

IPC: C08J011/04 ,  C07D201/02

CPC classification number: B03B9/061 ,  B03B2009/067 ,  B29B17/02 ,  B29B17/0412 ,  B29B2017/0224 ,  B29B2017/0241 ,  B29B2017/044 ,  B29B2017/0476 ,  B29B2017/0488 ,  B29K2077/00 ,  B29K2105/12 ,  B29L2031/7322 ,  C07D201/12 ,  C07D223/10 ,  Y02W30/521 ,  Y02W30/523 ,  Y02W30/525 ,  Y02W30/622 ,  Y02W30/625 ,  Y02W30/667 ,  Y10T83/0467

Abstract: The invention relates to a process for recovering monomeric units of a nylon from carpet material, said carpet material comprising fibres containing said nylon bound to a backing containing one or more non-nylon components, the carpet material containing between 15 and 35 wt. % of said nylon, which process comprises the steps of: a) mechanically separating the carpet material into an enriched carpet mixture containing between 35 and 55 wt. % of said nylon and into a depleted carpet mixture having a lower content of said nylon than the carpet material b) exposing the enriched carpet mixture to conditions at which depolymerisation of said nylon is effected.

Abstract translation: 本发明涉及从地毯材料回收尼龙的单体单元的方法，所述地毯材料包含含有所述尼龙的纤维，所述纤维包含与含有一种或多种非尼龙组分的背衬结合，所述地毯材料含有15至35重量％ 所述尼龙的％，该方法包括以下步骤：a）将地毯材料机械分离成含有35至55重量％ 所述尼龙的百分比并且变成具有比地毯材料低的所述尼龙含量的贫化地毯混合物b）将富集的地毯混合物暴露于所述尼龙解聚的条件下。