公开(公告)号：US2806848A

公开(公告)日：1957-09-17

申请号：US2806848D

CPC classification number: C07D201/12

公开(公告)号：US07538143B2

公开(公告)日：2009-05-26

申请号：US10897473

申请日：2004-07-23

Applicant: Rudolf Kämpf ,  Reinhard Wolf ,  Joachim Seelig

Inventor： Rudolf Kämpf ,  Reinhard Wolf ,  Joachim Seelig

IPC: C08J11/04

CPC classification number: C07D201/12

Abstract: The invention relates to a method for the treatment of waste containing polyamide comprising a) depolymerisation of the waste containing polyamide, whereby a caprolactam raw material (6) and a flow (3), comprising the secondary constituents and additives from the depolymerisation, are obtained, and b) leaching of the flow (3) at least once using an extracting agent.

Abstract translation: 本发明涉及一种处理含有聚酰胺的废物的方法，包括：a）含有聚酰胺的废物的解聚，由此获得包含来自解聚的第二组分和添加剂的己内酰胺原料（6）和流动物（3） ，和b）使用提取剂至少一次浸出所述流（3）。

公开(公告)号：US20040024204A1

公开(公告)日：2004-02-05

申请号：US10457831

申请日：2003-06-09

Applicant: ZIMMER AKTIENGESELLSCHAFT

Inventor： Claus Born ,  Rudolf Kampf ,  Joachim Seelig ,  Reinhard Wolf

IPC: C07D201/02

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：US06498250B2

公开(公告)日：2002-12-24

申请号：US09983218

申请日：2001-10-23

Applicant: Leonardus J. G. Raets ,  Marco J. A. Houben ,  Michel J. G. Huys ,  Antonius C. Berghmans

Inventor： Leonardus J. G. Raets ,  Marco J. A. Houben ,  Michel J. G. Huys ,  Antonius C. Berghmans

IPC: C07D20112

CPC classification number: C07D201/12 ,  C08J11/14 ,  C08J2377/04 ,  Y02W30/704

Abstract: The invention relates to a process for nylon depolymerization, in which process a multi-component material, comprising nylon and one or more non-nylon components, is fed to a depolymerization zone in which depolymerization of at least part of said nylon is effected, resulting in a product stream and a residue, said product stream containing monomers of said nylon, said residue containing non-nylon components, wherein the nylon content in the residue is measured and used to control the depolymerization process.

公开(公告)号：US06111099A

公开(公告)日：2000-08-29

申请号：US5512

申请日：1998-01-12

Applicant: Yvonne H Frentzen ,  Marcellinus P. G. Thijert ,  Rudolf L. Zwart

Inventor： Yvonne H Frentzen ,  Marcellinus P. G. Thijert ,  Rudolf L. Zwart

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/12

Abstract: A process for depolymerizing nylon 6 and recovering caprolactam from the depolymerized products by extraction with alkyl phenolic compounds. Process steps include (a) treating a first mixture comprising nylon 6 with water at a temperature between about 200.degree. C. and about 400.degree. C. to yield a second mixture comprising depolymerized nylon 6 components, wherein the second mixture contains caprolactam at a concentration between about 5 wt. % and about 35 wt. %; (b) optionally, separating insoluble material from the second mixture; (c) extracting the second mixture with an extraction agent to yield an aqueous raffinate third mixture and an organic phase fourth mixture comprising caprolactam and the extraction agent, wherein the extraction agent is an alkyl phenol having a boiling point higher than that of the caprolactam; (d) recovering caprolactam from the organic phase fourth mixture by distillation; (e) recycling the aqueous raffinate third mixture to step (a).

Abstract translation: 一种通过用烷基酚类化合物萃取从解聚产物中解聚尼龙6并回收己内酰胺的方法。 工艺步骤包括（a）在约200℃至约400℃之间的温度下处理包含尼龙6的第一混合物与水，以产生包含解聚的尼龙6组分的第二混合物，其中第二混合物含有浓度为的己内酰胺 约5wt。 ％和约35wt。 ％; （b）任选地，从第二混合物中分离不溶物质; （c）用提取剂萃取第二混合物，得到含水萃余液第三混合物和包含己内酰胺和提取剂的有机相第四混合物，其中提取剂是沸点高于己内酰胺的沸点的烷基苯酚; （d）通过蒸馏从有机相第四混合物中回收己内酰胺; （e）将含水萃余液第三混合物再循环到步骤（a）。

公开(公告)号：US6093788A

公开(公告)日：2000-07-25

申请号：US169531

申请日：1998-10-09

Applicant: Claus Born ,  Stefan Deibert ,  Jurgen Schiwek ,  Konrad Wolf

Inventor： Claus Born ,  Stefan Deibert ,  Jurgen Schiwek ,  Konrad Wolf

IPC: B01D1/26 ,  C02F1/04 ,  C07D201/12 ,  C08G69/16 ,  C08G69/18 ,  C08G69/00 ,  C08G73/10

CPC classification number: B01D1/26 ,  C02F1/048 ,  C07D201/12 ,  C08G69/16 ,  C08G69/18

Abstract: The invention comprises a process of producing .epsilon.-caprolactam from extract water of polycaprolactam obtained by hydrolytic polymerization, wherein(i) the extract water is concentrated by distillation of water,(ii) from the concentrated extract water from stage (i) an extract of .epsilon.-caprolactam and oligomers including dimers is obtained by separating an .epsilon.-caprolactam/water vapor mixture,(iii) the extract from stage (ii) is depolymerized in the presence of a catalyst and superheated steam, where a vapor mixture of .epsilon.-caprolactam and water is obtained, and(iv) from the .epsilon.-caprolactam/water vapor mixtures of process stages (ii) and (iii) .epsilon.-caprolactam with a dimer content of .ltoreq.0.2 wt-% is obtained by distillation of water.

Abstract translation: 本发明包括从通过水解聚合获得的聚己内酰胺的提取水中生产ε-己内酰胺的方法，其中（i）通过蒸馏水将提取物的水浓缩，（ii）来自阶段（i）的浓缩提取物水， ε-己内酰胺和包含二聚体的低聚物通过分离ε-己内酰胺/水蒸汽混合物而获得，（iii）在催化剂和过热蒸汽的存在下将阶段（ii）的提取物解聚，其中ε-己内酰胺 并且获得水，并且（iv）通过蒸馏水获得具有二元含量

公开(公告)号：US6020486A

公开(公告)日：2000-02-01

申请号：US115234

申请日：1998-07-14

Applicant: Martin Booij ,  Yvonne Helene Frentzen ,  Bart Kurt Stefaan Hommez ,  Eric Jozef Goethals

Inventor： Martin Booij ,  Yvonne Helene Frentzen ,  Bart Kurt Stefaan Hommez ,  Eric Jozef Goethals

IPC: C08F8/50 ,  B01J23/04 ,  B01J27/16 ,  C07C231/00 ,  C07D201/12 ,  C08J11/10 ,  C08J11/24

CPC classification number: C08J11/24 ,  C07D201/12 ,  C08J2377/00 ,  Y02W30/706

Abstract: The invention relates to a process for depolymerising one or more polyamides in the presence of at least an aliphatic alcohol, the depolymerisation taking place with at most 40 mol. % catalyst. This process provides good selectivity towards the monomeric components of polyamides. This process moreover causes as few waste streams as possible.

Abstract translation: 本发明涉及一种在至少一种脂族醇存在下解聚一种或多种聚酰胺的方法，解聚发生至多40mol。 ％催化剂。 该方法为聚酰胺的单体组分提供了良好的选择性。 此过程还会导致尽可能少的废物流。

公开(公告)号：US5536831A

公开(公告)日：1996-07-16

申请号：US355285

申请日：1994-12-12

Applicant: Michael Kopietz ,  Alan Handerman ,  Simon Jones ,  Ulrich Kalck ,  Claus-Ulrich Priester ,  Heinz Auer ,  Josef Ritz ,  Hugo Fuchs ,  Paul Pijl

Inventor： Michael Kopietz ,  Alan Handerman ,  Simon Jones ,  Ulrich Kalck ,  Claus-Ulrich Priester ,  Heinz Auer ,  Josef Ritz ,  Hugo Fuchs ,  Paul Pijl

IPC: B01J8/10 ,  C07D201/12 ,  C08G69/14 ,  C08J11/16

CPC classification number: C07D201/12

Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of a base under reduced pressure by depolymerizing polymers which contain the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--] or mixtures consisting essentially offrom 50 to 99.99% by weight of a polymer containing the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]--from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes,from 0 to 10% by weight of organic and/or inorganic additives,from 0 to 40% by weight of non-polyamide-containing polymers andfrom 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam,in at least two depolymerization reactors connected in series.

Abstract translation: 己内酰胺通过在碱存在下在减压下由含有重复单元 - [ - N（H） - （CH 2）5 -C（O） - ]的聚合物或基本上由 50至99.99重量％的含有重复单元的聚合物 - [ - N（H） - （CH 2）5 -C（O） - ] - 0.01至50重量％的选自无机填料 有机和无机颜料和染料，0至10重量％的有机和/或无机添加剂，0至40重量％的非聚酰胺聚合物和0至20重量％的聚酰胺，其中 在由至少两个解聚反应器串联连接的己内酰胺制备的聚己内酰胺和共聚酰胺的例外。

公开(公告)号：US5495015A

公开(公告)日：1996-02-27

申请号：US355286

申请日：1994-12-12

Applicant: Peter Bassler ,  Michael Kopietz

Inventor： Peter Bassler ,  Michael Kopietz

IPC: B03B9/06 ,  C07D201/12 ,  C08J11/14

CPC classification number: C07D201/12

Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of superheated water by bringing polymers which contain the repeating unit--[--N(H)--(CH.sub.2).sub.5 --C(O)--]--or mixtures consisting essentially of______________________________________from 40 to 99.9% by weight of a polymer containing the repeat- ing unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]--,from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes,from 0 to 10% by weight of organic and/or inorganic additives,from 0 to 40% by weight of non-polyamide-containing polymers andfrom 0 to 60% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam,______________________________________into contact with superheated water at from 280.degree. to 320.degree. C. and from 7.5 to 15 MPa and a weight ratio of water to polymer containing the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]-- of from 5:1 to 13:1 and in a reaction time of less than 3 hours, with the proviso that the reaction mixture, consisting essentially of water and the polymer used or the mixture used, contains no gaseous phase under the conditions of the hydrolysis.

Abstract translation: 在过热水存在下，通过使含有重复单元 - [ - N（H） - （CH 2）5 -C（O） - ] - 的聚合物或由基本上由40组成的混合物 至99.9重量％的含有重复单元的聚合物 - [-N（H） - （CH 2）5 -C（O） - ] - ， - 0.01-50重量％ - 由无机填料，有机和无机颜料和染料组成， - 0至10重量％的有机和/或无机添加剂， - 0至40重量％的非聚酰胺含聚合物和 - 0至60重量％的聚酰胺，除了由己内酰胺制备的聚己内酰胺和共聚酰胺与280℃至320℃和7.5至15MPa的过热水接触，并且水与 含有重复单元的聚合物 - [ - N（H） - （CH2）5-C（O） - ] - 为5：1至13：1，反应时间小于3小时，条件是 反应mi 主要由水组成，所使用的聚合物或所使用的混合物在水解条件下不含气相。

公开(公告)号：US5458740A

公开(公告)日：1995-10-17

申请号：US205979

申请日：1994-03-04

Applicant: Thomas P. Losier ,  Donald R. Johnson ,  Hugo Fuchs ,  Gerald Neubauer ,  Josef Ritz

Inventor： Thomas P. Losier ,  Donald R. Johnson ,  Hugo Fuchs ,  Gerald Neubauer ,  Josef Ritz

IPC: C07D201/12 ,  C07D201/16 ,  B01D3/34

CPC classification number: C07D201/12 ,  C07D201/16 ,  Y10S203/90

Abstract: A process for the purification of caprolactam from crude caprolactam by distilling the crude caprolactam in the presence of an anorganic or organic acid.

Abstract translation: 通过在无机或有机酸的存在下蒸馏粗己内酰胺从粗己内酰胺纯化己内酰胺的方法。