公开(公告)号：US3459640A

公开(公告)日：1969-08-05

申请号：US3459640D

申请日：1966-04-06

Applicant: TEIJIN LTD

Inventor： TSUNAWKI SHIGEMITSU ,  FURUSAWA YUTAKA

IPC: C07D201/12 ,  B01D3/08 ,  B01D3/06

CPC classification number: C07D201/12

公开(公告)号：US3317519A

公开(公告)日：1967-05-02

申请号：US45785365

申请日：1965-05-21

Applicant: ALLIED CHEM

Inventor： LAZARUS STANLEY D ,  TWILLEY IAN C ,  SNIDER ORVILL E

IPC: C07C51/09 ,  C07D201/12

CPC classification number: C07D201/12 ,  C07C51/09 ,  Y10S525/938

公开(公告)号：US20240092719A1

公开(公告)日：2024-03-21

申请号：US18484171

申请日：2023-10-10

Applicant: Apeel Technology, Inc.

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

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

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：US07173127B2

公开(公告)日：2007-02-06

申请号：US10457831

申请日：2003-06-09

Applicant: Claus Born ,  Rudolf K{hacek over (a)}mpf ,  Joachim Seelig ,  Reinhard Wolf

Inventor： Claus Born ,  Rudolf K{hacek over (a)}mpf ,  Joachim Seelig ,  Reinhard Wolf

IPC: C07D201/16

CPC classification number: C07D201/12

Abstract: This invention relates to a continuous and efficient method for the manufacture of highly pure caprolactam suitable for the polycondensation of Polyamide 6 (polycaprolactam) from polyamide waste. In particular the invention relates to a method for the manufacture of caprolactam from waste containing polyamides, including the steps a) depolymerisation of the waste containing polyamides, whereby a caprolactam raw material and a flow containing secondary constituents or additives is obtained, b) at least one distillation of the caprolactam raw material, and c) at least one crystallisation of the caprolactam material obtained in step b), by which means caprolactam is obtained, whereby at least part of the caprolactam obtained in step c) with a permanganate number of

Abstract translation: 本发明涉及用于制备适用于聚酰胺废物聚酰胺6（聚己内酰胺）缩聚的高纯度己内酰胺的连续和有效的方法。 具体地说，本发明涉及一种从含有聚酰胺的废物中制造己内酰胺的方法，包括以下步骤：a）对含有废物的聚酰胺进行解聚，由此得到己内酰胺原料和含有二级成分或添加剂的流体，b）至少 己内酰胺原料的一次蒸馏，和c）步骤b）中获得的己内酰胺材料的至少一种结晶，通过该方法获得己内酰胺，由此至少部分步骤c）中获得的己内酰胺的高锰酸盐数目< 10000秒 并且在解聚之前和/或期间，将含有<85％的UV透射率加入到含废物的聚酰胺中。

公开(公告)号：US07115671B2

公开(公告)日：2006-10-03

申请号：US10159982

申请日：2002-06-03

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

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

IPC: C08J11/04

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. The carpet material includes fibres containing nylon bound to a backing containing one or more non-nylon components. The carpet material contains between 15 and 35 wt. % of the nylon. The process includes: 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 nylon than the carpet material; and b) exposing the enriched carpet mixture to conditions at which depolymerization of the nylon is effected.

Abstract translation: 本发明涉及从地毯材料回收尼龙单体单元的方法。 地毯材料包括含有尼龙的纤维，其结合到含有一种或多种非尼龙组分的背衬上。 地毯材料含有15至35wt。 ％的尼龙。 该方法包括：a）将地毯材料机械分离成含有35至55wt。 ％的所述尼龙，并且成为具有比地毯材料低的尼龙含量的贫化地毯混合物; 和b）将富集的地毯混合物暴露于进行尼龙解聚的条件下。

公开(公告)号：US20030065169A1

公开(公告)日：2003-04-03

申请号：US10210878

申请日：2002-08-02

Applicant: DSM N.V.

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

IPC: C07D21/08 ,  C08G069/08 ,  C08G073/10

CPC classification number: C07D201/12 ,  C07D201/08

Abstract: A process for the preparation of null-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)-null-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：US20020058808A1

公开(公告)日：2002-05-16

申请号：US09934679

申请日：2001-08-23

Inventor： Peter W.H. Cheng ,  Jan A.J. Hendrix ,  Leonardus J.G. Raets

IPC: C07D223/10

CPC classification number: C07D201/12 ,  C07D201/16

Abstract: The present invention relates to a process for purifying an impure stream of caprolactam while recovering not only pure caprolactam but also medium-to-high pressure steam. Preferably, the stream of impure or crude caprolactam, which comprises at a minimum a substantial portion of water, is obtained from depolymerization of a polyamide-containing composition. The resulting purified caprolactam will have a purity greater than 90 weight percent and the recovered steam will have a temperature sufficiently high to provide a driving force for use with other equipment, for instance, heat exchange equipment.

公开(公告)号：US06342555B2

公开(公告)日：2002-01-29

申请号：US09759444

申请日：2001-01-12

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

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

IPC: C08K326

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° C. to about 400° 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.

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汽流的温度下的饱和蒸汽压。

公开(公告)号：US6087494A

公开(公告)日：2000-07-11

申请号：US69204

申请日：1998-04-29

Applicant: Petrus J. H. Thomissen

Inventor： Petrus J. H. Thomissen

IPC: C08F8/50 ,  C07D201/12 ,  C08J11/14 ,  C08J11/16

CPC classification number: C07D201/12

Abstract: Process for the depolymerization of one or more polyamides into its monomeric components in the presence of water by means of at least one alkali metal compound, at least one alkaline-earth metal compound or a combination thereof. The depolymerization takes place at a pressure of between 0.2 and 2.0 MPa, so that high conversions are achieved and the depolymerization reaction proceeds faster, even in the presence of a high content of cyclic oligomers.

Abstract translation: 通过至少一种碱金属化合物，至少一种碱土金属化合物或其组合，在水存在下将一种或多种聚酰胺解聚成其单体成分的方法。 在0.2-2.0MPa的压力下进行解聚，从而即使在高含量的环状低聚物的存在下也能实现高转化率并且解聚反应进行得更快。

公开(公告)号：US5869654A

公开(公告)日：1999-02-09

申请号：US844539

申请日：1997-04-18

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.The formed caprolactam may then be used in the production of engineered resins and fibers.

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。 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。