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。

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：US5386070A

公开(公告)日：1995-01-31

申请号：US943535

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 ,  C07C4/22

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

Abstract: A process of using fast pyrolysis in a carrier gas to convert a polystyrene and polyphenylene oxide plastic waste to a given polystyrene and polyphenylene oxide prior to pyrolysis of other plastic components therein comprising:selecting a first temperature range to cause pyrolysis of given polystyrene and polyphenylene oxide and its high value monomeric constituent prior to a temperature range that causes pyrolysis of other plastic components;selecting a catalyst and a support and treating the feed stream with the catalyst to affect acid or base catalyzed reaction pathways to maximize yield or enhance separation of high value monomeric constituent of styrene from polystyrene and polyphenylene oxide in the first temperature range;differentially heating the feed stream at a heat rate within the first temperature range to provide differential pyrolysis for selective recovery of the high value monomeric constituent of styrene from polystyrene and polyphenylene oxide prior to pyrolysis of other plastic components;separating the high value monomer constituent of styrene;selecting a second higher temperature range to cause pyrolysis to a different derived high value product of polyphenylene oxide from the plastic waste and differentially heating the feed stream at the higher temperature range to cause pyrolysis of the plastic into a polyphenylene oxide derived product; andseparating the different derived high value polyphenylene oxide product.

Abstract translation: 在其他塑料组分热解之前，在载气中使用快速热解将聚苯乙烯和聚苯醚塑料废料转化为给定的聚苯乙烯和聚苯醚的方法，包括：选择第一温度范围以引起给定的聚苯乙烯和聚苯醚的热解 以及其在引起其他塑料组分热解的温度范围之前的高价值单体成分; 选择催化剂和载体并用催化剂处理进料流以影响酸或碱催化的反应途径，以使第一温度范围内的苯乙烯与聚苯乙烯的高价值单体成分的分离最大化; 在第一温度范围内以加热速率差异地加热进料流，以提供差别热解，以便在其它塑料组分的热解之前选择性地从聚苯乙烯和聚苯醚中回收苯乙烯的高价值单体组分; 分离苯乙烯的高价值单体组分; 选择第二较高的温度范围以使来自塑料废物的聚苯醚的不同衍生的高价值产物进行热解，并在较高温度范围内差异加热进料流，以使塑料热解成聚苯醚衍生产物; 并分离不同衍生的高价值聚苯醚产物。

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：US5321174A

公开(公告)日：1994-06-14

申请号：US943888

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 ,  C07C1/00 ,  C07C4/00

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

Abstract: A process of using fast pyrolysis to convert a plastic waste feed stream containing polycarbonate and ABS to high value monomeric constituents prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of a given polymer to its high value monomeric constituents prior to a temperature range that causes pyrolysis of other plastic components; selecting an acid or base catalysts and an oxide or carbonate support for treating the feed stream to affect acid or base catalyzed reaction pathways to maximize yield or enhance separation of the high value monomeric constituents of polycarbonate and ABS in the first temperature program range; differentially heating the 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 constituents prior to pyrolysis or other plastic components; separating the high value monomeric constituents from the polycarbonate to cause pyrolysis to a different high value monomeric constituent of the plastic waste and differentially heating the feed stream at the second higher temperature program range to cause pyrolysis of different high value monomeric constituents; and separating the different high value monomeric constituents.

Abstract translation: 在其它塑料组分热解之前，使用快速热解将包含聚碳酸酯和ABS的塑料废料进料流转化为高价值的单体组分的方法，其中包括：选择第一温度程序范围以使给定聚合物热解成其高价值单体 在导致其它塑料部件的热解的温度范围之前的成分; 选择酸或碱催化剂和氧化物或碳酸酯载体来处理进料流以影响酸或碱催化的反应途径，以使第一温度程序范围内的聚碳酸酯和ABS的高价值单体成分的产率最大化或增强分离; 在第一温度程序范围内以加热速率差异地加热进料流，以提供差别热解，以在热解或其它塑料组分之前选择性回收最佳量的高价值单体组分; 从聚碳酸酯中分离出高价值的单体成分，使热解成塑料废料的不同高价值单体成分，并在第二较高温度程序范围差异加热进料流，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组分。

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：US3905946A

公开(公告)日：1975-09-16

申请号：US39224473

申请日：1973-08-28

Applicant: BASF AG

Inventor： NIESWANDT WERNER ,  HOERAUF WERNER ,  GUENTHER ERNST ,  KISSEL ERNST ,  NEUMANN ECKART ,  VALENTIN GUENTER

IPC: C08G69/00 ,  B01D11/02 ,  C07D201/12 ,  C08G69/46

CPC classification number: C08G69/46

Abstract: Continuous extraction of polylactam granules for the removal of monomers and/or oligomers therefrom by means of hot water flowing countercurrently in an extraction zone, which extraction zone is divided into subzones by at least one heating zone and the water is accelerated, at certain time intervals, cocurrently and countercurrently to the flow of granules.

Abstract translation: 连续提取多内酰胺颗粒以通过在提取区域中逆流流动的热水从其中除去单体和/或低聚物，该提取区通过至少一个加热区被分成次区域，并以特定的时间间隔加速水 与流动的流动并流逆流。