公开(公告)号：US2840606A

公开(公告)日：1958-06-24

申请号：US50173655

申请日：1955-04-15

Applicant: DU PONT

Inventor： MILLER BRUCE M

IPC: C07C51/06 ,  C07D201/12

CPC classification number: C07D201/12 ,  C07C51/06 ,  C07C55/14

公开(公告)号：US07129347B2

公开(公告)日：2006-10-31

申请号：US10897472

申请日：2004-07-23

Applicant: Rudolf Kampf ,  Reinhard Wolf ,  Joachim Seelig

Inventor： Rudolf Kampf ,  Reinhard Wolf ,  Joachim Seelig

IPC: C07D201/12

CPC classification number: C07D201/16 ,  C07D201/12

Abstract: The invention relates to a method for the continuous production of caprolactam from waste containing polyamide, comprising a) depolymerisation of the waste containing polyamide, whereby a caprolactam raw material and, where applicable, a flow containing secondary constituents or additives is obtained, and b) irradiation of the caprolactam raw material with UV radiation.

Abstract translation: 本发明涉及一种从含有聚酰胺的废物中连续生产己内酰胺的方法，其包括：a）含有聚酰胺的废物的解聚，由此得到己内酰胺原料，并且在适用的情况下获得含有二级成分或添加剂的流动，以及b） 紫外线照射己内酰胺原料。

公开(公告)号：US20050056532A1

公开(公告)日：2005-03-17

申请号：US10897472

申请日：2004-07-23

Applicant: Rudolf Kampf ,  Reinhard Wolf ,  Joachim Seelig

Inventor： Rudolf Kampf ,  Reinhard Wolf ,  Joachim Seelig

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/16 ,  C07D201/12

Abstract: The invention relates to a method for the continuous production of caprolactam from waste containing polyamide, comprising a) depolymerisation of the waste containing polyamide, whereby a caprolactam raw material and, where applicable, a flow containing secondary constituents or additives is obtained, and b) irradiation of the caprolactam raw material with UV radiation.

Abstract translation: 本发明涉及一种从含有聚酰胺的废物中连续生产己内酰胺的方法，其包括：a）含有聚酰胺的废物的解聚，由此得到己内酰胺原料，并且在适用的情况下获得含有二级成分或添加剂的流动，以及b） 紫外线照射己内酰胺原料。

公开(公告)号：US5990306A

公开(公告)日：1999-11-23

申请号：US922853

申请日：1997-09-03

Applicant: Richard Eugene Mayer ,  Lamberto Crescentini ,  Theodore John Jenczewski

Inventor： Richard Eugene Mayer ,  Lamberto Crescentini ,  Theodore John Jenczewski

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/12

Abstract: The present invention provides a process for the preparation of purified caprolactam comprising the steps of:(a) depolymerizing polyamide-containing carpet in the presence of steam to obtain crude caprolactam and steam;(b) removing substantially all of said water from said crude caprolactam and steam(c) distilling the resulting concentrated crude caprolactam at a pressure of less than about 8 mmHg and a temperature from about 110.degree. C. to about 145.degree. C. so as to form overheads and bottoms of the caprolactam; and(d) crystallizing the caprolactam overheads to obtain caprolactam crystals and mother liquor.The resulting purified caprolactam may then be used to make polycaprolactam which may then be used in engineered materials or spun into fiber.

Abstract translation: 本发明提供了制备纯己内酰胺的方法，包括以下步骤：（a）在蒸汽存在下解聚含聚酰胺的地毯以获得粗己内酰胺和蒸汽; （b）从所述粗己内酰胺和蒸汽中去除基本上所有的所述水;（c）在小于约8mmHg的压力和约110℃至约145℃的温度下蒸馏所得浓缩的粗己内酰胺，以便 以形成己内酰胺的塔顶馏出物和塔底物; 和（d）结晶己内酰胺塔顶馏出物以获得己内酰胺晶体和母液。 然后将所得纯化的己内酰胺用于制备聚己内酰胺，然后将其用于工程化材料或纺成纤维。

公开(公告)号：US5977193A

公开(公告)日：1999-11-02

申请号：US943795

申请日：1992-09-11

Applicant: Thomas F. Corbin ,  Alan C. Handermann ,  Richard Kotek ,  William D. Porter ,  Jack A. Dellinger ,  Edward A. Davis

Inventor： Thomas F. Corbin ,  Alan C. Handermann ,  Richard Kotek ,  William D. Porter ,  Jack A. Dellinger ,  Edward A. Davis

IPC: B29B17/02 ,  B29K77/00 ,  B29K105/26 ,  C07D201/12 ,  C08G69/14 ,  C08J11/00 ,  C08J11/14 ,  C08J11/16

CPC classification number: C08G69/14 ,  C07D201/12 ,  Y02P20/582

Abstract: .epsilon.-Caprolactam is continuously recovered from carpet made from nylon 6 face fibers and a backing. The carpet is fed to a separator to prepare scrap containing nylon 6 and auxiliary materials. The scrap from the separator is fed to a depolymerizing reactor to produce an .epsilon.-caprolactam containing distillate and more auxiliary materials. The .epsilon.-caprolactam in the distillate is separated from other volatiles and purified. The auxiliary materials are also recovered or re-used.

Abstract translation: ε-己内酰胺从由尼龙6面纤维和背衬制成的地毯连续回收。 将地毯送入隔板以制备含有尼龙6和辅助材料的废料。 将来自分离器的废料进料到解聚反应器以产生含有ε-己内酰胺的馏出物和更多的辅助材料。 馏出物中的ε-己内酰胺与其它挥发物分离并纯化。 辅助材料也被回收或重新使用。

公开(公告)号：US5668277A

公开(公告)日：1997-09-16

申请号：US632082

申请日：1996-04-15

Applicant: Jan A. J. Hendrix ,  Martin Booij ,  Yvonne H. Frentzen

Inventor： Jan A. J. Hendrix ,  Martin Booij ,  Yvonne H. Frentzen

IPC: B01J27/16 ,  C07B61/00 ,  C07C227/18 ,  C07C231/12 ,  C07C253/20 ,  C07D201/12

CPC classification number: C07D201/12 ,  C07C253/20

Abstract: One or more polyamides can be depolymerized in the presence of at least one nitrogen-containing compound. The depolymerization takes place at a pressure between about 0.5 and about 5 atm. The polyamide may be in the form of carpet waste or other heterogeneous form. Advantages include better selectivity towards the polyamide monomeric components and use of low pressure equipment to effect depolymerization.

Abstract translation: 一种或多种聚酰胺可以在至少一种含氮化合物的存在下解聚。 解聚发生在约0.5和约5atm之间的压力下。 聚酰胺可以是地毯废物或其他不同形式的形式。 优点包括对聚酰胺单体组分的更好的选择性和使用低压设备来实现解聚。

公开(公告)号：US5455346A

公开(公告)日：1995-10-03

申请号：US355283

申请日：1994-12-12

Applicant: Michael Kopietz ,  Ulrich Kalck ,  Simon Jones ,  Peter Bassler ,  Claus-Ulrich Priester

Inventor： Michael Kopietz ,  Ulrich Kalck ,  Simon Jones ,  Peter Bassler ,  Claus-Ulrich Priester

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: Caprolactam is obtained from mixtures which contain polymers or thermoplastic molding materials having the repeating unit--N(H)--(CH.sub.2).sub.5 --C(O)--(a) by cleavage at elevated temperatures in the presence of a base under reduced pressure or (b) in the presence of water, by using a mixture essentially comprisingfrom 50 to 99.9% by weight of a polymer or of a thermoplastic molding material having the repeating unit--N(H)--(CH.sub.2).sub.5 --C(O)--from 0.1 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,and carrying out the cleavage in the presence of a base under reduced pressure, the water content of the mixture used being not more than 0.01% by weight, or carrying out the cleavage in the presence of water without the addition of acid or base at from 270.degree. to 350.degree. C. and a weight ratio of water to polymer or thermoplastic molding material of from 1:1 to 20:1 and in a reaction time of less than 3 hours.

Abstract translation: 己内酰胺由含有聚合物或具有重复单元-N（H） - （CH 2）5 -C（O） - （a）的聚合物或热塑性模塑材料的混合物获得，通过在碱的存在下在减压下在升高的温度下裂解，或 （B）在水的存在下，通过使用基本上包含50-99.9重量％的聚合物或具有重复单元-N（H） - （CH 2）5 -C（O）的热塑性模塑材料的混合物， - 0.1至50重量％的选自无机填料，有机和无机颜料和染料的添加剂，0至10重量％的有机和/或无机添加剂，0至40重量％的非 - 聚酰胺的聚合物和0〜20重量％的聚酰胺，但是由己内酰胺制备的聚己内酰胺和共聚酰胺除外，在减压下在碱的存在下进行裂解，所用混合物的水含量为 不大于0.01重量％，或进行切割 在没有在270-350℃下加入酸或碱的水存在下，水与聚合物或热塑性成型材料的重量比为1:1至20:1，反应时间小于 3小时。

公开(公告)号：US5441607A

公开(公告)日：1995-08-15

申请号：US265740

申请日：1994-06-27

Applicant: Hugo Fuchs ,  Josef Ritz ,  Hans J. Wilfinger ,  David Weatherford

Inventor： Hugo Fuchs ,  Josef Ritz ,  Hans J. Wilfinger ,  David Weatherford

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

CPC classification number: C07D201/12 ,  C07D201/16

Abstract: Recovery of caprolactam and of an alkali metal carbonate from distillation residues which are obtained in the purification of caprolactam and contain caprolactam and/or oligomers and/or polymers of caprolactam and also alkali metal hydroxides by(a) melting the distillation residues, the caprolactam and/or oligomers and/or polymers of caprolactam and alkali metal hydroxides,(b) continuously removing caprolactam from the melt,(c) after removing caprolactam, cooling the melt and obtaining a residue,(d) dissolving the residue thus obtained in water and(e) subjecting the aqueous solution thus obtained to combustion with the formation of an alkali metal carbonateis described.

Abstract translation: 从纯化己内酰胺获得的己内酰胺和碱金属碳酸盐回收己内酰胺和/或己内酰胺和/或己内酰胺的聚合物和/或碱金属氢氧化物的齐聚物和/或碱金属氢氧化物，通过（a）将蒸馏残余物，己内酰胺和 /或己内酰胺和碱金属氢氧化物的低聚物和/或聚合物，（b）从熔体中连续除去己内酰胺，（c）除去己内酰胺后，冷却熔体并获得残余物，（d）将由此获得的残余物溶于水和 （e）描述了所得到的水溶液在形成碱金属碳酸盐时的燃烧。

公开(公告)号：US5359099A

公开(公告)日：1994-10-25

申请号：US943506

申请日：1992-10-27

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 ,  C07D307/08

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料进料流的方法，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的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：US5359061A

公开(公告)日：1994-10-25

申请号：US943526

申请日：1992-10-27

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 ,  C07C4/00

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料进料流的方法，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的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。